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build-output/client-submission/*.md
build-output/client-submission/*.pdf
build-output/client-submission/*.doc
build-output/job-board/*.md
build-output/job-board/*.pdf
build-output/job-board/*.doc
build-temp/*.yml
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GNU AFFERO GENERAL PUBLIC LICENSE
Version 3, 19 November 2007
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.
Preamble
The GNU Affero General Public License is a free, copyleft license for software and other kinds of works, specifically designed to ensure cooperation with the community in the case of network server software.
The licenses for most software and other practical works are designed to take away your freedom to share and change the works. By contrast, our General Public Licenses are intended to guarantee your freedom to share and change all versions of a program--to make sure it remains free software for all its users.
When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for them if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs, and that you know you can do these things.
Developers that use our General Public Licenses protect your rights with two steps: (1) assert copyright on the software, and (2) offer you this License which gives you legal permission to copy, distribute and/or modify the software.
A secondary benefit of defending all users' freedom is that improvements made in alternate versions of the program, if they receive widespread use, become available for other developers to incorporate. Many developers of free software are heartened and encouraged by the resulting cooperation. However, in the case of software used on network servers, this result may fail to come about. The GNU General Public License permits making a modified version and letting the public access it on a server without ever releasing its source code to the public.
The GNU Affero General Public License is designed specifically to ensure that, in such cases, the modified source code becomes available to the community. It requires the operator of a network server to provide the source code of the modified version running there to the users of that server. Therefore, public use of a modified version, on a publicly accessible server, gives the public access to the source code of the modified version.
An older license, called the Affero General Public License and published by Affero, was designed to accomplish similar goals. This is a different license, not a version of the Affero GPL, but Affero has released a new version of the Affero GPL which permits relicensing under this license.
The precise terms and conditions for copying, distribution and modification follow.
TERMS AND CONDITIONS
0. Definitions.
"This License" refers to version 3 of the GNU Affero General Public License.
"Copyright" also means copyright-like laws that apply to other kinds of works, such as semiconductor masks.
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Notwithstanding any other provision of this License, if you modify the Program, your modified version must prominently offer all users interacting with it remotely through a computer network (if your version supports such interaction) an opportunity to receive the Corresponding Source of your version by providing access to the Corresponding Source from a network server at no charge, through some standard or customary means of facilitating copying of software. This Corresponding Source shall include the Corresponding Source for any work covered by version 3 of the GNU General Public License that is incorporated pursuant to the following paragraph.
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IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively state the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found.
MarkdownResume-Pipeline
Copyright (C) 2024 reachableceo
This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If your software can interact with users remotely through a computer network, you should also make sure that it provides a way for users to get its source. For example, if your program is a web application, its interface could display a "Source" link that leads users to an archive of the code. There are many ways you could offer source, and different solutions will be better for different programs; see section 13 for the specific requirements.
You should also get your employer (if you work as a programmer) or school, if any, to sign a "copyright disclaimer" for the program, if necessary. For more information on this, and how to apply and follow the GNU AGPL, see <http://www.gnu.org/licenses/>.

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# MarkdownResume-Pipeline
A set of scripts and template files for managing a markdown/json resume.

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# Charles N Wyble
## Introduction
Hello,
I apologize for the form letter response.
I receive a high volume of recruiter emails every day and I've found this letter to be the most efficient way to
handle the high volume of emails and reduce back and forth emails/texts/calls.
If you have any questions/comments/concerns not covered by this document, please let me know via e-mail and I'm happy to address them!
If you ask me something answered in this document, I will not respond and will not move forward with the opportunity, so please read it in detail!
## Re: share my ID over email
I WILL NOT share my (full or redacted) photo ID over email or any other electronic written
communication. If that is "required" then I have no interest in moving forward with this opportunity.
I am happy to get on a teams/zoom/google meet etc call and show my ID.
## Re: professional references
I am happy to provide professional references once an interview with the end client/customer/hiring manager/team has been scheduled. I will NOT provide references up front. If that is "required" then I have no interest in moving forward with this opportunity.
## Re: relocation
if the role is not based in **Austin TX** or **Raleigh NC** I will need to re-locate
| Question | Answer |
|-------------------------------------------|--------|
| Am I open to relocation? | Yes |
| Am I willing to re-locate at own expense? | No |
| Am I open to up to 100% travel | Yes |
Please be aware that:
- I will **only re-locate at the employer expense**.
- I will need **two weeks of time** to re-locate.
- The net amount of the re-location benefit **MUST be at least $5,000 USD** to fully compensate me for the time/effort to re-locate.
- The full re-location benefit **must be provided prior to the confirmed start date**.
- I **will NOT** accept a reimbursement based re-location package.
- I am happy to come onsite (at client expense (paid up front)) for training/orientation etc.
\pagebreak
## Rate Schedule (compensation expectations)
For **fully remote** roles only:
I am open to (at the absolute minimum): **\$50.00 per hour(w2)/\$75.00 per hour (1099/corp to corp)/ $100,000.00 annually (w2)**.
I have a strong preference for roles that are : **\$65.00 per hour(w2)/\$85.00 per hour (1099/corp to corp)/ $130,000.00 annually (w2)**.
For **on-site roles**:
I am open to (at the absolute minimum): **\$75.00 per hour(w2)/\$95.00 per hour (1099/corp to corp)/ $150,000.00 annually (w2)**.
In regards to compensation structure, I am open to:
- w2
- corp to corp (I have my own LLC)
- 1099
If you have a rate for any of the compensation options above, send them all. I will pick which one works best for my situation and the opportunity.
If it's a different rate with/without benefits, send both.
If the above is in alignment with this opportunity, please feel free to send me an RTR with the best rate you can offer.
\pagebreak
## Details needed for submission
### My resume
[Download Charles resume(pdf)](https://resume.reachableceo.com/job-board/CharlesNWyble-Resume.pdf)
I am happy to discuss and make edits to the resume content specific to the opportunity if you feel
they are needed.
### Candidate details
Here are my complete candidate details for submission to the role.
| Question | Answer |
|---------------------------------------|--------------------------------------------------------------------------|
| Full name | Charles Wyble |
| E-mail address | <reachableceo@reachableceo.com> |
| Phone number | 818-280-7059 |
| Preferred form of contact | E-mail will get the fastest response |
| Work authorization | US Citizen |
| Are you employed presently? | No |
| Current location | Austin, Texas |
| Current timezone | CST |
| Timezones I can work in | PST/CST/EST |
| Availability to interview | Immediate |
| Availability to start | Immediate for remote/local, two weeks for relocation |
| Open to in-office/hybrid/remote | Yes |
| Any trips planned in next six months? | No |
| Highest Education | High School (no college/university) |
| Graduated Year | 2002 |
| Name of school | Osborne Christian School |
| Location of school | Los Angeles CA |
| Linkedin Profile | [Linkedin Profile](https://www.linkedin.com/in/charles-wyble-412007337/) |
| Github Profile | [Github Profile](https://www.github.com/ReachableCEO/) |
| Last project | Contract, ended October 2024 |
| DOB | 09/14 |
| Total IT/career experience | 22 years |

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@ -0,0 +1,14 @@
title: "Charles N Wyble Candidate Details"
titlepage: true
titlepage-logo: "D:/tsys/@ReachableCEO/ReachableCEO.png"
toc: true
toc-own-page: true
date: \today
header-left: "\\hspace{1cm}"
header-center: "\\leftmark"
header-right: "Page \\thepage"
footer-left: "Charles N Wyble"
footer-center: "Tenacity. Velocity. Focus."
footer-right: "[Source code for this file](https://github.com/ReachableCEO/ReachableCEOResume/blob/main/ancillary-support-files/CharlesNWybleCandidateInfo.md)"
urlcolor: blue
page-background: "D:/tsys/@ReachableCEO/ExternalVendorCode/pandoc-latex-template/examples/page-background/backgrounds/background1.pdf"

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{{CandidateName}}
=====
{{CandidateOneLinerSummary}}

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@ -0,0 +1,6 @@
{{CandidateName}}
=====
{{CandidateOneLinerSummary}}
[ [Github Profile]({{CandidateGithub}}) ] . [ [Linkedin Profile]({{CandidateLinkedin}}) ] . [ {{CandidateEmail}} ] . [ {{CandidatePhone}} ] . [ {{CandidateLocation}} ]

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- Stuff
- Things
- Amazing project!

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@ -0,0 +1,3 @@
- Stuff
- Things
- Amazing project!

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@ -0,0 +1,2 @@
- Cool project 1.
- cool project 2.

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@ -0,0 +1,2 @@
skill1|1 years|skill,1,details,and,stuff
skill2|2 years|skill2,2,details,and,stuff,and,things
1 skill1 1 years skill,1,details,and,stuff
2 skill2 2 years skill2,2,details,and,stuff,and,things

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@ -0,0 +1,2 @@
job1,Title of job 1,January 1 1970 - January 6 1980
job2,Title of Job 2,January 1 1970 - January 6 1980
1 job1 Title of job 1 January 1 1970 - January 6 1980
2 job2 Title of Job 2 January 1 1970 - January 6 1980

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@ -0,0 +1 @@
This directory is used by the build process. Ignore it.

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@ -0,0 +1 @@
Working directory for the pipeline. Don't use.

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@ -0,0 +1 @@
This directory is used by the build process. Ignore it.

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@ -0,0 +1 @@
Working directory for the pipeline. Don't use.

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@ -0,0 +1,7 @@
title: "{{CandidateName}} Resume"
header-left: "\\hspace{1cm}"
header-center: "\\leftmark"
header-right: "Page \\thepage"
footer-left: "{{CandidateName}}"
urlcolor: {{URLCOLOR}}
page-background: "{{PAGEBACKGROUND}}"

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@ -0,0 +1,12 @@
title: "{{CandidateName}} Resume"
titlepage: true
titlepage-logo: "{{CandidateLogo}}"
date: \today
header-left: "\\hspace{1cm}"
header-center: "\\leftmark"
header-right: "Page \\thepage"
footer-left: "{{CandidateName}}"
footer-center: "{{CandidateTagline}}"
footer-right: "[Source code for this resume]({{ResumeSourceCode}})"
urlcolor: {{URLCOLOR}}
page-background: "{{PAGEBACKGROUND}}"

189
build/build.sh Normal file
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#!/usr/bin/env bash
export CandidateName="First Middle Last"
export CandidatePhone="1 123 456 7890"
export CandidateLocation="Place 1/Place 2"
export CandidateEmail="candidate@domain.com"
export CandidateOneLineSummary="Super awesome and stuff."
export CandidateLinkedin="linkedin.com"
export CandidateGithub="github.com"
export CandidateLogo=""
export CandidateTagline="Your.Tagline.Here."
export ResumeSourceCode="https://git.knownelement.com/reachableceo/MarkdownResume-Pipeline"
export URLCOLOR="blue"
export PAGEBACKGROUND="../vendor/git.knownelement.com/ExternalVendorCode/pandoc-latex-template/examples/page-background/backgrounds/background3.pdf"
####################################################
#DO NOT CHANGE ANYTHING BELOW THIS LINE
####################################################
# shellcheck disable=SC1091
#source "$(dirname "${BASH_SOURCE[0]}")/bash3boilerplate.sh"
############################################################
# Setup globals
############################################################
readonly MO_PATH="bash ../vendor/git.knownelement.com/ExternalVendorCode/mo/mo"
readonly BUILD_OUTPUT_DIR="../build-output"
readonly BUILD_TEMP_DIR="../build-temp"
readonly BUILDYAML_JOBBOARD="$BUILD_TEMP_DIR/JobBoard.yml"
readonly BUILDYAML_CLIENTSUBMISSION="$BUILD_TEMP_DIR/ClientSubmission.yml"
echo "Cleaning up from previous runs..."
JobBoardMarkdownOutputFile="$BUILD_OUTPUT_DIR/job-board/Resume.md"
JobBoardPDFOutputFile="$BUILD_OUTPUT_DIR/job-board/Resume.pdf"
JobBoardMSWordOutputFile="$BUILD_OUTPUT_DIR/job-board/Resume.doc"
ClientSubmissionMarkdownOutputFile="$BUILD_OUTPUT_DIR/client-submission/Resume.md"
ClientSubmissionPDFOutputFile="$BUILD_OUTPUT_DIR/client-submission//Resume.pdf"
ClientSubmissionMSWordOutputFile="$BUILD_OUTPUT_DIR/client-submission/Resume.doc"
rm $BUILDYAML_JOBBOARD
rm $JobBoardMarkdownOutputFile
rm $JobBoardPDFOutputFile
rm $JobBoardMSWordOutputFile
rm $BUILDYAML_CLIENTSUBMISSION
rm $ClientSubmissionMarkdownOutputFile
rm $ClientSubmissionPDFOutputFile
rm $ClientSubmissionMSWordOutputFile
# Expand variables into rendered YAML files. These will be used by pandoc to create the output artifacts
$MO_PATH ./BuildTemplate-JobBoard.yml > $BUILDYAML_JOBBOARD
$MO_PATH ./BuildTemplate-ClientSubmission.yml > $BUILDYAML_CLIENTSUBMISSION
echo "Combining markdown files into single input file for pandoc..."
# Create contact info md file
$MO_PATH ../Templates/ContactInfo/ContactInfo-JobBoard.md > $BUILD_TEMP_DIR/ContactInfo-JobBoard.md
$MO_PATH ../Templates/ContactInfo/ContactInfo-ClientSubmit.md > $BUILD_TEMP_DIR/ContactInfo-ClientSubmit.md
#Pull in contact info
cat $BUILD_TEMP_DIR/ContactInfo-JobBoard.md >> $JobBoardMarkdownOutputFile
echo " " >> $JobBoardMarkdownOutputFile
cat $BUILD_TEMP_DIR/ContactInfo-ClientSubmit.md >> $ClientSubmissionMarkdownOutputFile
echo " " >> $ClientSubmissionMarkdownOutputFile
echo "## Career Highlights" >> $JobBoardMarkdownOutputFile
echo "## Career Highlights" >> $ClientSubmissionMarkdownOutputFile
cat ../Templates/SkillsAndProjects/Projects.md >> $JobBoardMarkdownOutputFile
echo "\pagebreak" >> $JobBoardMarkdownOutputFile
cat ../Templates/SkillsAndProjects/Projects.md >> $ClientSubmissionMarkdownOutputFile
echo "\pagebreak" >> $ClientSubmissionMarkdownOutputFile
echo " " >> $JobBoardMarkdownOutputFile
echo "## Employment History" >> $JobBoardMarkdownOutputFile
echo " " >> $JobBoardMarkdownOutputFile
echo " " >> $ClientSubmissionMarkdownOutputFile
echo "## Employment History" >> $ClientSubmissionMarkdownOutputFile
echo " " >> $ClientSubmissionMarkdownOutputFile
#And here we do some magic...
#Pull in :
# employer
# title
# start/end dates of employment
# long form position summary data from each position
IFS=$'\n\t'
for position in \
$(cat ../Templates/WorkHistory/WorkHistory.csv); do
COMPANY="$(echo $position|awk -F ',' '{print $1}')"
TITLE="$(echo $position|awk -F ',' '{print $2}')"
DATEOFEMPLOY="$(echo $position|awk -F ',' '{print $3}')"
echo " " >> "$JobBoardMarkdownOutputFile"
echo "**$COMPANY | $TITLE | $DATEOFEMPLOY**" >> $JobBoardMarkdownOutputFile
echo " " >> "$JobBoardMarkdownOutputFile"
echo "**$COMPANY | $TITLE | $DATEOFEMPLOY**" >> $ClientSubmissionMarkdownOutputFile
echo " " >> "$ClientSubmissionMarkdownOutputFile"
echo " " >> "$JobBoardMarkdownOutputFile"
cat ../Templates/JobHistoryDetails/$COMPANY.md >> "$JobBoardMarkdownOutputFile"
echo " " >> "$JobBoardMarkdownOutputFile"
cat ../Templates/JobHistoryDetails/$COMPANY.md >> "$ClientSubmissionMarkdownOutputFile"
echo " " >> "$ClientSubmissionMarkdownOutputFile"
done
#Pull in my skills and generate a beautiful table.
echo "\pagebreak" >> $JobBoardMarkdownOutputFile
echo " " >> "$JobBoardMarkdownOutputFile"
echo "## Skills" >> "$JobBoardMarkdownOutputFile"
echo " " >> "$JobBoardMarkdownOutputFile"
echo "\pagebreak" >> $ClientSubmissionMarkdownOutputFile
echo " " >> "$ClientSubmissionMarkdownOutputFile"
echo "## Skills" >> "$ClientSubmissionMarkdownOutputFile"
echo " " >> "$ClientSubmissionMarkdownOutputFile"
#Table heading
echo "|Skill|Experience|Skill Details|" >> $JobBoardMarkdownOutputFile
echo "|---|---|---|" >> $JobBoardMarkdownOutputFile
echo "|Skill|Experience|Skill Details|" >> $ClientSubmissionMarkdownOutputFile
echo "|---|---|---|" >> $ClientSubmissionMarkdownOutputFile
#Table rows
IFS=$'\n\t'
for skill in \
$(cat ../Templates/SkillsAndProjects/Skills.csv); do
SKILL_NAME="$(echo $skill|awk -F '|' '{print $1}')"
SKILL_YEARS="$(echo $skill|awk -F '|' '{print $2}')"
SKILL_DETAIL="$(echo $skill|awk -F '|' '{print $3}')"
echo "|**$SKILL_NAME**|$SKILL_YEARS|$SKILL_DETAIL|" >> $JobBoardMarkdownOutputFile
echo "|**$SKILL_NAME**|$SKILL_YEARS|$SKILL_DETAIL|" >> $ClientSubmissionMarkdownOutputFile
done
unset IFS
echo "Generating PDF output for job board version..."
pandoc \
"$JobBoardMarkdownOutputFile" \
--template eisvogel \
--metadata-file="../build-temp/JobBoard.yml" \
--from markdown \
--to=pdf \
--output $JobBoardPDFOutputFile
echo "Generating MSWord output for job board version..."
pandoc \
"$JobBoardMarkdownOutputFile" \
--metadata-file="../build-temp/JobBoard.yml" \
--from markdown \
--to=docx \
--reference-doc=resume-docx-reference.docx \
--output $JobBoardMSWordOutputFile
echo "Generating PDF output for client submission version..."
pandoc \
"$ClientSubmissionMarkdownOutputFile" \
--template eisvogel \
--metadata-file="../build-temp/ClientSubmission.yml" \
--from markdown \
--to=pdf \
--output $ClientSubmissionPDFOutputFile
echo "Generating MSWord output for client submission version..."
pandoc \
"$ClientSubmissionMarkdownOutputFile" \
--metadata-file="../build-temp/ClientSubmission.yml" \
--from markdown \
--to=docx \
--reference-doc=resume-docx-reference.docx \
--output $ClientSubmissionMSWordOutputFile

Binary file not shown.

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@ -0,0 +1,7 @@
Thanks for contributing to b3bp! As part of your PR, have you:
- [ ] Added an item in [CHANGELOG.md](https://github.com/kvz/bash3boilerplate/blob/HEAD/CHANGELOG.md) with attribution?
- [ ] Added your name to the [README.md](https://github.com/kvz/bash3boilerplate/blob/HEAD/README.md#authors)
- [ ] Linted your code? (`make test` should do the trick)
If so, great! Feel free to replace this message with a description of your work and hit submit!

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groups:
production-dependencies:
dependency-type: 'production'
development-dependencies:
dependency-type: 'development'

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name: b3bp CI
on:
push:
branches:
- main
pull_request:
types:
- opened
- synchronize
jobs:
ci:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v3
with:
fetch-depth: 1
- uses: actions/setup-node@v1
with:
node-version: 18.x
- name: Install
run: |
corepack yarn
- name: Lint
env:
SHELLCHECK_SEVERITY: warning
run: |
corepack yarn lint
- name: Test
run: |
corepack yarn test

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.yarn
assets/build
env.sh
node_modules
npm-debug.log

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external-sources=true
shell=bash
color=always

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{
"folders": [
{
"path": ".."
}
],
"settings": {}
}

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nodeLinker: node-modules

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# Changelog
Here's is a combined todo/done list. You can see what todos are planned for the upcoming release, as well as ideas that may/may not make into a release in `Ideas`.
## Ideas
Unplanned.
- [ ] Better style guide checking (#84)
## main
Released: TBA.
[Diff](https://github.com/kvz/bash3boilerplate/compare/2.7.2...main).
- [ ]
## 2.7.2
Released: 2023-08-29
[Diff](https://github.com/kvz/bash3boilerplate/compare/v2.4.1...2.7.2).
- [x] Upgrade and cleanup node dependencies
- [x] Remove lanyon-based website in favor of simple redirect to github for bash3boilerplate.sh
- [x] Make tests pass again
- [x] Make linting and style checking separate actions
- [x] Add feature to edit/update comments in ini file (#132, @rfuehrer)
- [x] Upgrade to `lanyon@0.1.16`
- [x] Capture correct error_code in err_report (#124, @eval)
- [x] Enhanced ini file handling: create new file, create new sections, handle default section, read key from given section (@rfuehrer)
## v2.4.2
Released: 2019-11-07.
[Diff](https://github.com/kvz/bash3boilerplate/compare/v2.4.1...v2.4.2).
- [x] Upgrade to `lanyon@0.1.16`
- [x] Capture correct error_code in err_report (#124, @eval)
- [x] Enhanced ini file handling: create new file, create new sections, handle default section, read key from given section (@rfuehrer)
## v2.4.1
Released: 2019-11-07.
[Diff](https://github.com/kvz/bash3boilerplate/compare/v2.3.0...v2.4.1).
- [x] Upgrade to `lanyon@0.1.7`
- [x] Allow counting how many times an argument is used (@genesiscloud)
- [x] Fix typos in megamount (thanks @gsaponaro)
- [x] Enable color in screen or tmux (#92, @gmasse)
- [x] Change `egrep` to `grep -E` in test and lib scripts to comply with ShellCheck (#92, @gmasse)
- [x] Fix typo in FAQ (#92, @gmasse)
- [x] Fix Travis CI failure on src/templater.sh (@gmasse)
- [x] Add magic variable which contains full command invocation
- [x] More contrasted alert and emergency colors (#111 @gmeral)
- [x] Add support for repeatable arguments (@genesiscloud)
- [x] Fix remaining warnings with shellcheck v0.7.0 (#107, @genesiscloud)
## v2.4.0
Released: 2016-12-21.
[Diff](https://github.com/kvz/bash3boilerplate/compare/v2.3.0...v2.4.0).
- [x] Upgrade to `lanyon@0.0.143`
## v2.3.0
Released: 2016-12-21.
[Diff](https://github.com/kvz/bash3boilerplate/compare/v2.2.0...v2.3.0).
- [x] Add magic variable `__i_am_main_script` to distinguish if b3bp is being sourced or called directly (#45, @zbeekman)
- [x] Add style checks for tab characters and trailing whitespace (@zbeekman)
- [x] Add backtracing to help localize errors (#44, @zbeekman)
- [x] Additional FAQ entries (#47, suggested by @gdevenyi, implemented by @zbeekman)
- [x] Ensure that shifting over `--` doesn't throw an errexit error (#21, @zbeekman)
- [x] Add Pull Request template (#83)
## v2.2.0
Released: 2016-12-21.
[Diff](https://github.com/kvz/bash3boilerplate/compare/v2.1.0...v2.2.0).
- [x] README and FAQ improvements (#66, @mstreuhofer)
- [x] Add support for sourcing b3bp (#61, @mstreuhofer)
- [x] Upgrade all Node.js dependencies for development (#78)
- [x] Switch to http://lanyon.io for static site building, add a new logo
- [x] Cleanup environment variables (#58, @mstreuhofer)
- [x] Support multi-line logs (#57, @mstreuhofer)
- [x] Run shellcheck as part of the acceptance test (#79, @mstreuhofer)
- [x] Brace all variables, used `[[` instead of `[` (#33, #76, @mstreuhofer)
- [x] Add automatic usage validation for required args (#22, #65, @mstreuhofer)
- [x] Remove all usage of eval (@mstreuhofer)
- [x] Get rid of awk, sed & egrep usage (#71, @mstreuhofer)
- [x] Fix auto-color-off code (#69, #70, @mstreuhofer)
- [x] Use shellcheck to find and fix unclean code (#68, #80, @mstreuhofer)
- [x] Allow for multiline opt description in `__usage` (#7, @mstreuhofer)
- [x] Allow `__usage` and `__helptext` to be defined before sourcing `main.sh` thus makeing b3bp behave like a library (@mstreuhofer)
- [x] Add the same License text to each script header (@mstreuhofer)
## v2.1.0
Released: 2016-11-08.
[Diff](https://github.com/kvz/bash3boilerplate/compare/v2.0.0...v2.1.0).
- [x] Cleanup b3bp variables (adds prefixes across the board) (thanks @mstreuhofer)
- [x] Add multi-line logging support (thanks @mstreuhofer)
- [x] Mangle long-option names to allow dashes (thanks @zbeekman)
- [x] Remove OS detection altogether (#38, thx @zbeekman)
- [x] Offer the main template for download as http://bash3boilerplate.sh/main.sh
- [x] Better OS detection (#38, thx @moviuro)
- [x] Improve README copy (#34, thx galaktos)
- [x] Fix unquoted variable access within (#34 thx galaktos)
- [x] For delete-key-friendliness, bundle the commandline definition block along with its parser
- [x] Less verbose header comments
- [x] For delete-key-friendliness, don't crash on undeclared help vars
- [x] Introduce `errtrace`, which is on by default (BREAKING)
- [x] Add a configurable `helptext` that is left alone by the parses and allows you to have a richer help
- [x] Add a simple documentation website
- [x] Add best practice of using `__double_underscore_prefixed_vars` to indicate global variables that are solely controlled inside your script
- [x] Make license more permissive by not requiring distribution of the LICENSE file if the copyright & attribution comments are left intact
- [x] Respect `--no-color` by setting the `NO_COLOR` flag in `main.sh` (#25, thx @gdevenyi)
- [x] Split out changelog into separate file
- [x] Added a [FAQ](./FAQ.md) (#15, #14, thanks @rouson)
- [x] Fix Travis OSX testing (before, it would silently pass failures) (#10)
- [x] Enable dashes in long, GNU style options, as well as numbers (thanks @zbeekman)
## v2.0.0
Released: 2016-02-17.
[Diff](https://github.com/kvz/bash3boilerplate/compare/v1.2.1...v2.0.0).
- [x] Add tests for `templater` and follow Library export best practices
- [x] Add tests for `ini_val` and follow Library export best practices
- [x] Add tests for `parse_url` and follow Library export best practices
- [x] Add tests for `megamount` and follow Library export best practices
- [x] Remove `bump` from `src` (BREAKING)
- [x] Remove `semver` from `src` (BREAKING)
## v1.2.1
Released: 2016-02-17.
[Diff](https://github.com/kvz/bash3boilerplate/compare/v1.2.0...v1.2.1).
- [x] Add Travis CI automated testing for OSX (thanks @zbeekman)
## v1.2.0
Released: 2016-02-16.
[Diff](https://github.com/kvz/bash3boilerplate/compare/v1.1.0...v1.2.0).
- [x] Allow disabling colors via `NO_COLOR` environment variable
- [x] Enable `errexit`, `nounset` and `pipefail` options at the top of the script already
- [x] More refined colors (thanks @arathai)
- [x] Add a changelog to the README
- [x] Add `__os` magic var (limited to discovering OSX and defaulting to Linux for now)
- [x] Add `__base` magic var (`main`, if the source script is `main.sh`)
- [x] Enable long, GNU style options (thanks @zbeekman)
- [x] Add Travis CI automated testing for Linux
## v1.1.0
Released: 2015-06-29.
[Diff](https://github.com/kvz/bash3boilerplate/compare/v1.0.3...v1.1.0).
- [x] Add `ALLOW_REMAINDERS` configuration to templater
- [x] Fix typo: 'debugmdoe' to 'debugmode' (thanks @jokajak)
- [x] Use `${BASH_SOURCE[0]}` for `__file` instead of `${0}`
## v1.0.3
Released: 2014-11-02.
[Diff](https://github.com/kvz/bash3boilerplate/compare/5db569125319a89b9561b434db84e4d91faefb63...v1.0.3).
- [x] Add `ini_val`, `megamount`, `parse_url`
- [x] Add re-usable libraries in `./src`
- [x] Use npm as an additional distribution channel

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[This document is formatted with GitHub-Flavored Markdown. ]: #
[For better viewing, including hyperlinks, read it online at ]: #
[https://github.com/kvz/bash3boilerplate/blob/HEAD/FAQ.md ]: #
## Contents
- [What is a CLI](#what-is-a-cli)?
- [How do I incorporate BASH3 Boilerplate into my own project](#how-do-i-incorporate-bash3-boilerplate-into-my-own-project)?
- [How do I add a command-line flag](#how-do-i-add-a-command-line-flag)?
- [How do I access the value of a command-line argument](#how-do-i-access-the-value-of-a-command-line-argument)?
- [What is a magic variable](#what-is-a-magic-variable)?
- [How do I submit an issue report](#how-do-i-submit-an-issue-report)?
- [How can I contribute to this project](#how-can-i-contribute-to-this-project)?
- [Why are you typing BASH in all caps](#why-are-you-typing-bash-in-all-caps)?
- [You are saying you are portable, but why won't b3bp code run in dash / busybox / posh / ksh / mksh / zsh](#you-are-saying-you-are-portable-but-why-wont-b3bp-code-run-in-dash--busybox--posh--ksh--mksh--zsh)?
- [How do I do Operating System detection](#how-do-i-do-operating-system-detection)?
- [How do I access a potentially unset (environment) variable](#how-do-i-access-a-potentially-unset-environment-variable)?
- [How can I detect or trap CTRL-C and other signals](#how-can-i-detect-or-trap-ctrl-c-and-other-signals)?
- [How can I get the PID of my running script](how-can-i-get-the-pid-of-my-running-script)?
<!--more-->
# Frequently Asked Questions
## What is a CLI?
A "CLI" is a [command-line interface](https://en.wikipedia.org/wiki/Command-line_interface).
## How do I incorporate BASH3 Boilerplate into my own project?
You can incorporate BASH3 Boilerplate into your project in one of two ways:
1. Copy the desired portions of [`main.sh`](http://bash3boilerplate.sh/main.sh) into your own script.
1. Download [`main.sh`](http://bash3boilerplate.sh/main.sh) and start pressing the delete-key to remove unwanted things
Once the `main.sh` has been tailor-made for your project, you can either append your own script in the same file, or source it in the following ways:
1. Copy [`main.sh`](http://bash3boilerplate.sh/main.sh) into the same directory as your script and then edit and embed it into your script using Bash's `source` include feature, e.g.:
```bash
#!/usr/bin/env bash
source main.sh
```
1. Source [`main.sh`](http://bash3boilerplate.sh/main.sh) in your script or at the command line:
```bash
#!/usr/bin/env bash
source main.sh
```
## How do I add a command-line flag?
1. Copy the line from the `main.sh` [read block](https://github.com/kvz/bash3boilerplate/blob/v2.1.0/main.sh#L109-L115) that most resembles the desired behavior and paste the line into the same block.
1. Edit the single-character (e.g., `-d`) and, if present, the multi-character (e.g., `--debug`) versions of the flag in the copied line.
1. Omit the `[arg]` text in the copied line, if the desired flag takes no arguments.
1. Omit or edit the text after `Default=` to set or not set default values, respectively.
1. Omit the `Required.` text, if the flag is optional.
## How do I access the value of a command-line argument?
To find out the value of an argument, append the corresponding single-character flag to the text `$arg_`. For example, if the [read block]
contains the line
```bash
-t --temp [arg] Location of tempfile. Default="/tmp/bar"
```
then you can evaluate the corresponding argument and assign it to a variable as follows:
```bash
__temp_file_name="${arg_t}"
```
## What is a magic variable?
The [magic variables](https://github.com/kvz/bash3boilerplate/blob/v2.1.0/main.sh#L26-L28) in `main.sh` are special in that they have a different value, depending on your environment. You can use `${__file}` to get a reference to your current script, and `${__dir}` to get a reference to the directory it lives in. This is not to be confused with the location of the calling script that might be sourcing the `${__file}`, which is accessible via `${0}`, or the current directory of the administrator running the script, accessible via `$(pwd)`.
## How do I submit an issue report?
Please visit our [Issues](https://github.com/kvz/bash3boilerplate/issues) page.
## How can I contribute to this project?
Please fork this repository. After that, create a branch containing your suggested changes and submit a pull request based on the main branch
of <https://github.com/kvz/bash3boilerplate/>. We are always more than happy to accept your contributions!
## Why are you typing BASH in all caps?
As an acronym, Bash stands for Bourne-again shell, and is usually written with one uppercase.
This project's name, however, is "BASH3 Boilerplate". It is a reference to
"[HTML5 Boilerplate](https://html5boilerplate.com/)", which was founded to serve a similar purpose,
only for crafting webpages.
Somewhat inconsistent but true to Unix ancestry the abbreviation for our project is "b3bp".
## You are saying you are portable, but why won't b3bp code run in dash / busybox / posh / ksh / mksh / zsh?
When we say _portable_, we mean across Bash versions. Bash is widespread and most systems
offer at least version 3 of it. Make sure you have that available and b3bp will work for you.
We run automated tests to make sure that it will. Here is some proof for the following platforms:
- [Linux](https://travis-ci.org/kvz/bash3boilerplate/jobs/109804166#L91-L94) `GNU bash, version 4.2.25(1)-release (x86_64-pc-linux-gnu)`
- [OSX](https://travis-ci.org/kvz/bash3boilerplate/jobs/109804167#L2453-L2455) `GNU bash, version 3.2.51(1)-release (x86_64-apple-darwin13)`
This portability, however, does not mean that we try to be compatible with
KornShell, Zsh, posh, yash, dash, or other shells. We allow syntax that would explode if
you pasted it in anything but Bash 3 and up.
## How do I do Operating System detection?
We used to offer a magic `__os` variable, but we quickly [discovered](https://github.com/kvz/bash3boilerplate/issues/38) that it would be hard
to create a satisfactory abstraction that is not only correct, but also covers enough use-cases,
while still having a relatively small footprint in `main.sh`.
For simple OS detection, we recommend using the `${OSTYPE}` variable available in Bash as
is demoed in [this stackoverflow post](http://stackoverflow.com/a/8597411/151666):
```bash
if [[ "${OSTYPE}" = "linux-gnu" ]]; then
echo "GNU Linux"
elif [[ "${OSTYPE}" = "darwin"* ]]; then
echo "Mac OSX"
elif [[ "${OSTYPE}" = "cygwin" ]]; then
echo "POSIX compatibility layer and Linux environment emulation for Windows"
elif [[ "${OSTYPE}" = "msys" ]]; then
echo "Lightweight shell and GNU utilities compiled for Windows (part of MinGW)"
elif [[ "${OSTYPE}" = "win32" ]]; then
echo "I'm not sure this can happen."
elif [[ "${OSTYPE}" = "freebsd"* ]]; then
echo "..."
else
echo "Unknown."
fi
```
## How do I access a potentially unset (environment) variable?
The set -o nounset line in `main.sh` causes error termination when an unset environment variables is detected as unbound. There are multiple ways to avoid this.
Some code to illustrate:
```bash
# method 1
echo ${NAME1:-Damian} # echos Damian, $NAME1 is still unset
# method 2
echo ${NAME2:=Damian} # echos Damian, $NAME2 is set to Damian
# method 3
NAME3=${NAME3:-Damian}; echo ${NAME3} # echos Damian, $NAME3 is set to Damian
```
This subject is briefly touched on as well in the [Safety and Portability section under point 5](README.md#safety-and-portability). b3bp currently uses [method 1](https://github.com/kvz/bash3boilerplate/blob/v2.1.0/main.sh#L252) when we want to access a variable that could be undeclared, and [method 3](https://github.com/kvz/bash3boilerplate/blob/v2.1.0/main.sh#L31) when we also want to set a default to an undeclared variable, because we feel it is more readable than method 2. We feel `:=` is easily overlooked, and not very beginner friendly. Method 3 seems more explicit in that regard in our humble opinion.
## How can I detect or trap Ctrl-C and other signals?
You can trap [Unix signals](https://en.wikipedia.org/wiki/Unix_signal) like [Ctrl-C](https://en.wikipedia.org/wiki/Control-C) with code similar to:
```bash
# trap ctrl-c and call ctrl_c()
trap ctrl_c INT
function ctrl_c() {
echo "** Trapped CTRL-C"
}
```
See http://mywiki.wooledge.org/SignalTrap for a list of signals, examples, and an in depth discussion.
## How can I get the PID of my running script?
The PID of a running script is contained in the `${$}` variable. This is _not_ the pid of any subshells. With Bash 4 you can get the PID of your subshell with `${BASHPID}`. For a comprehensive list of Bash built in variables see, e.g., http://www.tldp.org/LDP/abs/html/internalvariables.html

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The MIT License (MIT)
Copyright (c) 2013 Kevin van Zonneveld and contributors
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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# Licensed under MIT.
# Copyright (2016) by Kevin van Zonneveld https://twitter.com/kvz
#
# https://www.npmjs.com/package/fakefile
#
# Please do not edit this file directly, but propose changed upstream instead:
# https://github.com/kvz/fakefile/blob/main/Makefile
#
# This Makefile offers convience shortcuts into any Node.js project that utilizes npm scripts.
# It functions as a wrapper around the actual listed in `package.json`
# So instead of typing:
#
# $ npm script build:assets
#
# you could also type:
#
# $ make build-assets
#
# Notice that colons (:) are replaced by dashes for Makefile compatibility.
#
# The benefits of this wrapper are:
#
# - You get to keep the the scripts package.json, which is more portable
# (Makefiles & Windows are harder to mix)
# - Offer a polite way into the project for developers coming from different
# languages (npm scripts is obviously very Node centric)
# - Profit from better autocomplete (make <TAB><TAB>) than npm currently offers.
# OSX users will have to install bash-completion
# (http://davidalger.com/development/bash-completion-on-os-x-with-brew/)
ifeq ($(shell test -e ./yarn.lock && echo -n yes),yes)
RUNNER=yarn
INSTALLER=yarn install
else
RUNNER=npm run
INSTALLER=npm install
endif
define npm_script_targets
TARGETS := $(shell \
node -e 'for (var k in require("./package.json").scripts) {console.log(k.replace(/:/g, "-"));}'
| grep -v -E "^install$$"
)
$$(TARGETS):
$(RUNNER) $(shell \
node -e 'for (var k in require("./package.json").scripts) {console.log(k.replace(/:/g, "-"), k);}'
| grep -E "^$(MAKECMDGOALS)\s"
| head -n1
| awk '{print $$2}'
)
.PHONY: $$(TARGETS)
endef
$(eval $(call npm_script_targets))
# These npm run scripts are available, without needing to be mentioned in `package.json`
install:
$(INSTALLER)

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[This document is formatted with GitHub-Flavored Markdown. ]: #
[For better viewing, including hyperlinks, read it online at ]: #
[https://github.com/kvz/bash3boilerplate/blob/HEAD/README.md]: #
- [Overview](#overview)
- [Goals](#goals)
- [Features](#features)
- [Installation](#installation)
- [Changelog](#changelog)
- [Frequently Asked Questions](#frequently-asked-questions)
- [Best Practices](#best-practices)
- [Who uses b3bp](#who-uses-b3bp)
- [Authors](#authors)
- [License](#license)
## Overview
<!--more-->
When hacking up Bash scripts, there are often things such as logging or command-line argument parsing that:
- You need every time
- Come with a number of pitfalls you want to avoid
- Keep you from your actual work
Here's an attempt to bundle those things in a generalized way so that
they are reusable as-is in most scripts.
We call it "BASH3 Boilerplate" or b3bp for short.
## Goals
Delete-Key-**Friendly**. Instead of introducing packages, includes, compilers, etc., we propose using [`main.sh`](https://bash3boilerplate.sh/main.sh) as a base and removing the parts you don't need.
While this may feel a bit archaic at first, it is exactly the strength of Bash scripts that we should want to embrace.
**Portable**. We are targeting Bash 3 (OSX still ships
with 3, for instance). If you are going to ask people to install
Bash 4 first, you might as well pick a more advanced language as a
dependency.
## Features
- Conventions that will make sure that all your scripts follow the same, battle-tested structure
- Safe by default (break on error, pipefail, etc.)
- Configuration by environment variables
- Simple command-line argument parsing that requires no external dependencies. Definitions are parsed from help info, ensuring there will be no duplication
- Helpful magic variables like `__file` and `__dir`
- Logging that supports colors and is compatible with [Syslog Severity levels](https://en.wikipedia.org/wiki/Syslog#Severity_levels), as well as the [twelve-factor](https://12factor.net/) guidelines
## Installation
There are three different ways to install b3bp:
### Option 1: Download the main template
Use curl or wget to download the source and save it as your script. Then you can start deleting the unwanted bits, and adding your own logic.
```bash
wget https://bash3boilerplate.sh/main.sh
vim main.sh
```
### Option 2: Clone the entire project
Besides `main.sh`, this will also get you the entire b3bp repository. This includes a few extra functions that we keep in the `./src` directory.
```bash
git clone git@github.com:kvz/bash3boilerplate.git
```
### Option 3: Require via npm
As of `v1.0.3`, b3bp can also be installed as a Node module, meaning you can define it as a dependency in `package.json` via:
```bash
npm init
npm install --save --save-exact bash3boilerplate
```
Even though this option introduces a Node.js dependency, it does allow for easy version pinning and distribution in environments that already have this prerequisite. This is, however, entirely optional and nothing prevents you from ignoring this possibility.
## Changelog
Please see the [CHANGELOG.md](./CHANGELOG.md) file.
## Frequently Asked Questions
Please see the [FAQ.md](./FAQ.md) file.
## Best practices
As of `v1.0.3`, b3bp offers some nice re-usable libraries in `./src`. In order to make the snippets in `./src` more useful, we recommend the following guidelines.
### Function packaging
It is nice to have a Bash package that can not only be used in the terminal, but also invoked as a command line function. In order to achieve this, the exporting of your functionality _should_ follow this pattern:
```bash
if [[ "${BASH_SOURCE[0]}" = "${0}" ]]; then
my_script "${@}"
exit $?
fi
export -f my_script
```
This allows a user to `source` your script or invoke it as a script.
```bash
# Running as a script
$ ./my_script.sh some args --blah
# Sourcing the script
$ source my_script.sh
$ my_script some more args --blah
```
(taken from the [bpkg](https://raw.githubusercontent.com/bpkg/bpkg/HEAD/README.md) project)
### Scoping
1. In functions, use `local` before every variable declaration.
1. Use `UPPERCASE_VARS` to indicate environment variables that can be controlled outside your script.
1. Use `__double_underscore_prefixed_vars` to indicate global variables that are solely controlled inside your script, with the exception of arguments that are already prefixed with `arg_`, as well as functions, over which b3bp poses no restrictions.
### Coding style
1. Use two spaces for tabs, do not use tab characters.
1. Do not introduce whitespace at the end of lines or on blank lines as they obfuscate version control diffs.
1. Use long options (`logger --priority` vs `logger -p`). If you are on the CLI, abbreviations make sense for efficiency. Nevertheless, when you are writing reusable scripts, a few extra keystrokes will pay off in readability and avoid ventures into man pages in the future, either by you or your collaborators. Similarly, we prefer `set -o nounset` over `set -u`.
1. Use a single equal sign when checking `if [[ "${NAME}" = "Kevin" ]]`; double or triple signs are not needed.
1. Use the new bash builtin test operator (`[[ ... ]]`) rather than the old single square bracket test operator or explicit call to `test`.
### Safety and Portability
1. Use `{}` to enclose your variables. Otherwise, Bash will try to access the `$ENVIRONMENT_app` variable in `/srv/$ENVIRONMENT_app`, whereas you probably intended `/srv/${ENVIRONMENT}_app`. Since it is easy to miss cases like this, we recommend that you make enclosing a habit.
1. Use `set`, rather than relying on a shebang like `#!/usr/bin/env bash -e`, since that is neutralized when someone runs your script as `bash yourscript.sh`.
1. Use `#!/usr/bin/env bash`, as it is more portable than `#!/bin/bash`.
1. Use `${BASH_SOURCE[0]}` if you refer to current file, even if it is sourced by a parent script. In other cases, use `${0}`.
1. Use `:-` if you want to test variables that could be undeclared. For instance, with `if [[ "${NAME:-}" = "Kevin" ]]`, `$NAME` will evaluate to `Kevin` if the variable is empty. The variable itself will remain unchanged. The syntax to assign a default value is `${NAME:=Kevin}`.
## Who uses b3bp?
- [Transloadit](https://transloadit.com)
- [OpenCoarrays](https://www.opencoarrays.org)
- [Sourcery Institute](https://www.sourceryinstitute.org)
- [Computational Brain Anatomy Laboratory](https://cobralab.ca/)
- [Genesis Cloud](https://genesiscloud.com/)
We are looking for endorsements! Are you also using b3bp? [Let us know](https://github.com/kvz/bash3boilerplate/issues/new?title=I%20use%20b3bp) and get listed.
## Authors
- [Kevin van Zonneveld](https://kvz.io)
- [Izaak Beekman](https://izaakbeekman.com/)
- [Manuel Streuhofer](https://github.com/mstreuhofer)
- [Alexander Rathai](mailto:Alexander.Rathai@gmail.com)
- [Dr. Damian Rouson](https://www.sourceryinstitute.org/) (documentation, feedback)
- [@jokajak](https://github.com/jokajak) (documentation)
- [Gabriel A. Devenyi](https://staticwave.ca/) (feedback)
- [@bravo-kernel](https://github.com/bravo-kernel) (feedback)
- [@skanga](https://github.com/skanga) (feedback)
- [galaktos](https://www.reddit.com/user/galaktos) (feedback)
- [@moviuro](https://github.com/moviuro) (feedback)
- [Giovanni Saponaro](https://github.com/gsaponaro) (feedback)
- [Germain Masse](https://github.com/gmasse)
- [A. G. Madi](https://github.com/warpengineer)
- [Lukas Stockner](mailto:oss@genesiscloud.com)
- [Gert Goet](https://github.com/eval)
- [@rfuehrer](https://github.com/rfuehrer)
## License
Copyright (c) 2013 Kevin van Zonneveld and [contributors](https://github.com/kvz/bash3boilerplate#authors).
Licensed under [MIT](https://raw.githubusercontent.com/kvz/bash3boilerplate/HEAD/LICENSE).
You are not obligated to bundle the LICENSE file with your b3bp projects as long
as you leave these references intact in the header comments of your source files.

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bash3boilerplate.sh

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta
http-equiv="refresh"
content="0;url=https://github.com/kvz/bash3boilerplate"
/>
<title>Redirecting...</title>
</head>
<body>
If you are not redirected,
<a href="https://github.com/kvz/bash3boilerplate">click here</a>.
</body>
</html>

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#!/usr/bin/env bash
# This file:
#
# - Demos BASH3 Boilerplate (change this for your script)
#
# Usage:
#
# LOG_LEVEL=7 ./example.sh -f /tmp/x -d (change this for your script)
#
# Based on a template by BASH3 Boilerplate v2.3.0
# http://bash3boilerplate.sh/#authors
#
# The MIT License (MIT)
# Copyright (c) 2013 Kevin van Zonneveld and contributors
# You are not obligated to bundle the LICENSE file with your b3bp projects as long
# as you leave these references intact in the header comments of your source files.
### BASH3 Boilerplate (b3bp) Header
##############################################################################
# Commandline options. This defines the usage page, and is used to parse cli
# opts & defaults from. The parsing is unforgiving so be precise in your syntax
# - A short option must be preset for every long option; but every short option
# need not have a long option
# - `--` is respected as the separator between options and arguments
# - We do not bash-expand defaults, so setting '~/app' as a default will not resolve to ${HOME}.
# you can use bash variables to work around this (so use ${HOME} instead)
# shellcheck disable=SC2034
read -r -d '' __usage <<-'EOF' || true # exits non-zero when EOF encountered
-f --file [arg] Filename to process. Required.
-t --temp [arg] Location of tempfile. Default="/tmp/bar"
-v Enable verbose mode, print script as it is executed
-d --debug Enables debug mode
-h --help This page
-n --no-color Disable color output
-1 --one Do just one thing
-i --input [arg] File to process. Can be repeated.
-x Specify a flag. Can be repeated.
EOF
# shellcheck disable=SC2034
read -r -d '' __helptext <<-'EOF' || true # exits non-zero when EOF encountered
This is Bash3 Boilerplate's help text. Feel free to add any description of your
program or elaborate more on command-line arguments. This section is not
parsed and will be added as-is to the help.
EOF
# shellcheck source=main.sh
source "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/main.sh"
### Signal trapping and backtracing
##############################################################################
function __b3bp_cleanup_before_exit () {
info "Cleaning up. Done"
}
trap __b3bp_cleanup_before_exit EXIT
# requires `set -o errtrace`
__b3bp_err_report() {
local error_code=${?}
# shellcheck disable=SC2154
error "Error in ${__file} in function ${1} on line ${2}"
exit ${error_code}
}
# Uncomment the following line for always providing an error backtrace
# trap '__b3bp_err_report "${FUNCNAME:-.}" ${LINENO}' ERR
### Command-line argument switches (like -d for debugmode, -h for showing helppage)
##############################################################################
# debug mode
if [[ "${arg_d:?}" = "1" ]]; then
set -o xtrace
PS4='+(${BASH_SOURCE}:${LINENO}): ${FUNCNAME[0]:+${FUNCNAME[0]}(): }'
LOG_LEVEL="7"
# Enable error backtracing
trap '__b3bp_err_report "${FUNCNAME:-.}" ${LINENO}' ERR
fi
# verbose mode
if [[ "${arg_v:?}" = "1" ]]; then
set -o verbose
fi
# no color mode
if [[ "${arg_n:?}" = "1" ]]; then
NO_COLOR="true"
fi
# help mode
if [[ "${arg_h:?}" = "1" ]]; then
# Help exists with code 1
help "Help using ${0}"
fi
### Validation. Error out if the things required for your script are not present
##############################################################################
[[ "${arg_f:-}" ]] || help "Setting a filename with -f or --file is required"
[[ "${LOG_LEVEL:-}" ]] || emergency "Cannot continue without LOG_LEVEL. "
### Runtime
##############################################################################
# shellcheck disable=SC2154
info "__i_am_main_script: ${__i_am_main_script}"
# shellcheck disable=SC2154
info "__file: ${__file}"
# shellcheck disable=SC2154
info "__dir: ${__dir}"
# shellcheck disable=SC2154
info "__base: ${__base}"
info "OSTYPE: ${OSTYPE}"
info "arg_f: ${arg_f}"
info "arg_d: ${arg_d}"
info "arg_v: ${arg_v}"
info "arg_h: ${arg_h}"
if [[ -n "${arg_i:-}" ]]; then
info "arg_i: ${#arg_i[@]}"
for input_file in "${arg_i[@]}"; do
info " - ${input_file}"
done
else
info "arg_i: 0"
fi
# shellcheck disable=SC2015
[[ -n "${arg_x:-}" ]] && info "arg_x: ${#arg_x[@]}" || info "arg_x: 0"
info "$(echo -e "multiple lines example - line #1\\nmultiple lines example - line #2\\nimagine logging the output of 'ls -al /path/'")"
# All of these go to STDERR, so you can use STDOUT for piping machine readable information to other software
debug "Info useful to developers for debugging the application, not useful during operations."
info "Normal operational messages - may be harvested for reporting, measuring throughput, etc. - no action required."
notice "Events that are unusual but not error conditions - might be summarized in an email to developers or admins to spot potential problems - no immediate action required."
warning "Warning messages, not an error, but indication that an error will occur if action is not taken, e.g. file system 85% full - each item must be resolved within a given time."
error "Non-urgent failures, these should be relayed to developers or admins; each item must be resolved within a given time."
critical "Should be corrected immediately, but indicates failure in a primary system, an example is a loss of a backup ISP connection."
alert "Should be corrected immediately, therefore notify staff who can fix the problem. An example would be the loss of a primary ISP connection."
emergency "A \"panic\" condition usually affecting multiple apps/servers/sites. At this level it would usually notify all tech staff on call."

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#!/usr/bin/env bash
# This file:
#
# - Demos BASH3 Boilerplate (change this for your script)
#
# Usage:
#
# LOG_LEVEL=7 ./main.sh -f /tmp/x -d (change this for your script)
#
# Based on a template by BASH3 Boilerplate vv2.7.2
# http://bash3boilerplate.sh/#authors
#
# The MIT License (MIT)
# Copyright (c) 2013 Kevin van Zonneveld and contributors
# You are not obligated to bundle the LICENSE file with your b3bp projects as long
# as you leave these references intact in the header comments of your source files.
# Exit on error. Append "|| true" if you expect an error.
set -o errexit
# Exit on error inside any functions or subshells.
set -o errtrace
# Do not allow use of undefined vars. Use ${VAR:-} to use an undefined VAR
set -o nounset
# Catch the error in case mysqldump fails (but gzip succeeds) in `mysqldump |gzip`
set -o pipefail
# Turn on traces, useful while debugging but commented out by default
# set -o xtrace
if [[ "${BASH_SOURCE[0]}" != "${0}" ]]; then
__i_am_main_script="0" # false
if [[ "${__usage+x}" ]]; then
if [[ "${BASH_SOURCE[1]}" = "${0}" ]]; then
__i_am_main_script="1" # true
fi
__b3bp_external_usage="true"
__b3bp_tmp_source_idx=1
fi
else
__i_am_main_script="1" # true
[[ "${__usage+x}" ]] && unset -v __usage
[[ "${__helptext+x}" ]] && unset -v __helptext
fi
# Set magic variables for current file, directory, os, etc.
__dir="$(cd "$(dirname "${BASH_SOURCE[${__b3bp_tmp_source_idx:-0}]}")" && pwd)"
__file="${__dir}/$(basename "${BASH_SOURCE[${__b3bp_tmp_source_idx:-0}]}")"
__base="$(basename "${__file}" .sh)"
# shellcheck disable=SC2034,SC2015
__invocation="$(printf %q "${__file}")$( (($#)) && printf ' %q' "$@" || true)"
# Define the environment variables (and their defaults) that this script depends on
LOG_LEVEL="${LOG_LEVEL:-6}" # 7 = debug -> 0 = emergency
NO_COLOR="${NO_COLOR:-}" # true = disable color. otherwise autodetected
### Functions
##############################################################################
function __b3bp_log () {
local log_level="${1}"
shift
# shellcheck disable=SC2034
local color_debug="\\x1b[35m"
# shellcheck disable=SC2034
local color_info="\\x1b[32m"
# shellcheck disable=SC2034
local color_notice="\\x1b[34m"
# shellcheck disable=SC2034
local color_warning="\\x1b[33m"
# shellcheck disable=SC2034
local color_error="\\x1b[31m"
# shellcheck disable=SC2034
local color_critical="\\x1b[1;31m"
# shellcheck disable=SC2034
local color_alert="\\x1b[1;37;41m"
# shellcheck disable=SC2034
local color_emergency="\\x1b[1;4;5;37;41m"
local colorvar="color_${log_level}"
local color="${!colorvar:-${color_error}}"
local color_reset="\\x1b[0m"
if [[ "${NO_COLOR:-}" = "true" ]] || { [[ "${TERM:-}" != "xterm"* ]] && [[ "${TERM:-}" != "screen"* ]]; } || [[ ! -t 2 ]]; then
if [[ "${NO_COLOR:-}" != "false" ]]; then
# Don't use colors on pipes or non-recognized terminals
color=""; color_reset=""
fi
fi
# all remaining arguments are to be printed
local log_line=""
while IFS=$'\n' read -r log_line; do
echo -e "$(date -u +"%Y-%m-%d %H:%M:%S UTC") ${color}$(printf "[%9s]" "${log_level}")${color_reset} ${log_line}" 1>&2
done <<< "${@:-}"
}
function emergency () { __b3bp_log emergency "${@}"; exit 1; }
function alert () { [[ "${LOG_LEVEL:-0}" -ge 1 ]] && __b3bp_log alert "${@}"; true; }
function critical () { [[ "${LOG_LEVEL:-0}" -ge 2 ]] && __b3bp_log critical "${@}"; true; }
function error () { [[ "${LOG_LEVEL:-0}" -ge 3 ]] && __b3bp_log error "${@}"; true; }
function warning () { [[ "${LOG_LEVEL:-0}" -ge 4 ]] && __b3bp_log warning "${@}"; true; }
function notice () { [[ "${LOG_LEVEL:-0}" -ge 5 ]] && __b3bp_log notice "${@}"; true; }
function info () { [[ "${LOG_LEVEL:-0}" -ge 6 ]] && __b3bp_log info "${@}"; true; }
function debug () { [[ "${LOG_LEVEL:-0}" -ge 7 ]] && __b3bp_log debug "${@}"; true; }
function help () {
echo "" 1>&2
echo " ${*}" 1>&2
echo "" 1>&2
echo " ${__usage:-No usage available}" 1>&2
echo "" 1>&2
if [[ "${__helptext:-}" ]]; then
echo " ${__helptext}" 1>&2
echo "" 1>&2
fi
exit 1
}
### Parse commandline options
##############################################################################
# Commandline options. This defines the usage page, and is used to parse cli
# opts & defaults from. The parsing is unforgiving so be precise in your syntax
# - A short option must be preset for every long option; but every short option
# need not have a long option
# - `--` is respected as the separator between options and arguments
# - We do not bash-expand defaults, so setting '~/app' as a default will not resolve to ${HOME}.
# you can use bash variables to work around this (so use ${HOME} instead)
# shellcheck disable=SC2015
[[ "${__usage+x}" ]] || read -r -d '' __usage <<-'EOF' || true # exits non-zero when EOF encountered
-f --file [arg] Filename to process. Required.
-t --temp [arg] Location of tempfile. Default="/tmp/bar"
-v Enable verbose mode, print script as it is executed
-d --debug Enables debug mode
-h --help This page
-n --no-color Disable color output
-1 --one Do just one thing
-i --input [arg] File to process. Can be repeated.
-x Specify a flag. Can be repeated.
EOF
# shellcheck disable=SC2015
[[ "${__helptext+x}" ]] || read -r -d '' __helptext <<-'EOF' || true # exits non-zero when EOF encountered
This is Bash3 Boilerplate's help text. Feel free to add any description of your
program or elaborate more on command-line arguments. This section is not
parsed and will be added as-is to the help.
EOF
# Translate usage string -> getopts arguments, and set $arg_<flag> defaults
while read -r __b3bp_tmp_line; do
if [[ "${__b3bp_tmp_line}" =~ ^- ]]; then
# fetch single character version of option string
__b3bp_tmp_opt="${__b3bp_tmp_line%% *}"
__b3bp_tmp_opt="${__b3bp_tmp_opt:1}"
# fetch long version if present
__b3bp_tmp_long_opt=""
if [[ "${__b3bp_tmp_line}" = *"--"* ]]; then
__b3bp_tmp_long_opt="${__b3bp_tmp_line#*--}"
__b3bp_tmp_long_opt="${__b3bp_tmp_long_opt%% *}"
fi
# map opt long name to+from opt short name
printf -v "__b3bp_tmp_opt_long2short_${__b3bp_tmp_long_opt//-/_}" '%s' "${__b3bp_tmp_opt}"
printf -v "__b3bp_tmp_opt_short2long_${__b3bp_tmp_opt}" '%s' "${__b3bp_tmp_long_opt//-/_}"
# check if option takes an argument
if [[ "${__b3bp_tmp_line}" =~ \[.*\] ]]; then
__b3bp_tmp_opt="${__b3bp_tmp_opt}:" # add : if opt has arg
__b3bp_tmp_init="" # it has an arg. init with ""
printf -v "__b3bp_tmp_has_arg_${__b3bp_tmp_opt:0:1}" '%s' "1"
elif [[ "${__b3bp_tmp_line}" =~ \{.*\} ]]; then
__b3bp_tmp_opt="${__b3bp_tmp_opt}:" # add : if opt has arg
__b3bp_tmp_init="" # it has an arg. init with ""
# remember that this option requires an argument
printf -v "__b3bp_tmp_has_arg_${__b3bp_tmp_opt:0:1}" '%s' "2"
else
__b3bp_tmp_init="0" # it's a flag. init with 0
printf -v "__b3bp_tmp_has_arg_${__b3bp_tmp_opt:0:1}" '%s' "0"
fi
__b3bp_tmp_opts="${__b3bp_tmp_opts:-}${__b3bp_tmp_opt}"
if [[ "${__b3bp_tmp_line}" =~ ^Can\ be\ repeated\. ]] || [[ "${__b3bp_tmp_line}" =~ \.\ *Can\ be\ repeated\. ]]; then
# remember that this option can be repeated
printf -v "__b3bp_tmp_is_array_${__b3bp_tmp_opt:0:1}" '%s' "1"
else
printf -v "__b3bp_tmp_is_array_${__b3bp_tmp_opt:0:1}" '%s' "0"
fi
fi
[[ "${__b3bp_tmp_opt:-}" ]] || continue
if [[ "${__b3bp_tmp_line}" =~ ^Default= ]] || [[ "${__b3bp_tmp_line}" =~ \.\ *Default= ]]; then
# ignore default value if option does not have an argument
__b3bp_tmp_varname="__b3bp_tmp_has_arg_${__b3bp_tmp_opt:0:1}"
if [[ "${!__b3bp_tmp_varname}" != "0" ]]; then
# take default
__b3bp_tmp_init="${__b3bp_tmp_line##*Default=}"
# strip double quotes from default argument
__b3bp_tmp_re='^"(.*)"$'
if [[ "${__b3bp_tmp_init}" =~ ${__b3bp_tmp_re} ]]; then
__b3bp_tmp_init="${BASH_REMATCH[1]}"
else
# strip single quotes from default argument
__b3bp_tmp_re="^'(.*)'$"
if [[ "${__b3bp_tmp_init}" =~ ${__b3bp_tmp_re} ]]; then
__b3bp_tmp_init="${BASH_REMATCH[1]}"
fi
fi
fi
fi
if [[ "${__b3bp_tmp_line}" =~ ^Required\. ]] || [[ "${__b3bp_tmp_line}" =~ \.\ *Required\. ]]; then
# remember that this option requires an argument
printf -v "__b3bp_tmp_has_arg_${__b3bp_tmp_opt:0:1}" '%s' "2"
fi
# Init var with value unless it is an array / a repeatable
__b3bp_tmp_varname="__b3bp_tmp_is_array_${__b3bp_tmp_opt:0:1}"
[[ "${!__b3bp_tmp_varname}" = "0" ]] && printf -v "arg_${__b3bp_tmp_opt:0:1}" '%s' "${__b3bp_tmp_init}"
done <<< "${__usage:-}"
# run getopts only if options were specified in __usage
if [[ "${__b3bp_tmp_opts:-}" ]]; then
# Allow long options like --this
__b3bp_tmp_opts="${__b3bp_tmp_opts}-:"
# Reset in case getopts has been used previously in the shell.
OPTIND=1
# start parsing command line
set +o nounset # unexpected arguments will cause unbound variables
# to be dereferenced
# Overwrite $arg_<flag> defaults with the actual CLI options
while getopts "${__b3bp_tmp_opts}" __b3bp_tmp_opt; do
[[ "${__b3bp_tmp_opt}" = "?" ]] && help "Invalid use of script: ${*} "
if [[ "${__b3bp_tmp_opt}" = "-" ]]; then
# OPTARG is long-option-name or long-option=value
if [[ "${OPTARG}" =~ .*=.* ]]; then
# --key=value format
__b3bp_tmp_long_opt=${OPTARG/=*/}
# Set opt to the short option corresponding to the long option
__b3bp_tmp_varname="__b3bp_tmp_opt_long2short_${__b3bp_tmp_long_opt//-/_}"
printf -v "__b3bp_tmp_opt" '%s' "${!__b3bp_tmp_varname}"
OPTARG=${OPTARG#*=}
else
# --key value format
# Map long name to short version of option
__b3bp_tmp_varname="__b3bp_tmp_opt_long2short_${OPTARG//-/_}"
printf -v "__b3bp_tmp_opt" '%s' "${!__b3bp_tmp_varname}"
# Only assign OPTARG if option takes an argument
__b3bp_tmp_varname="__b3bp_tmp_has_arg_${__b3bp_tmp_opt}"
__b3bp_tmp_varvalue="${!__b3bp_tmp_varname}"
[[ "${__b3bp_tmp_varvalue}" != "0" ]] && __b3bp_tmp_varvalue="1"
printf -v "OPTARG" '%s' "${@:OPTIND:${__b3bp_tmp_varvalue}}"
# shift over the argument if argument is expected
((OPTIND+=__b3bp_tmp_varvalue))
fi
# we have set opt/OPTARG to the short value and the argument as OPTARG if it exists
fi
__b3bp_tmp_value="${OPTARG}"
__b3bp_tmp_varname="__b3bp_tmp_is_array_${__b3bp_tmp_opt:0:1}"
if [[ "${!__b3bp_tmp_varname}" != "0" ]]; then
# repeatables
# shellcheck disable=SC2016
if [[ -z "${OPTARG}" ]]; then
# repeatable flags, they increcemnt
__b3bp_tmp_varname="arg_${__b3bp_tmp_opt:0:1}"
debug "cli arg ${__b3bp_tmp_varname} = (${__b3bp_tmp_default}) -> ${!__b3bp_tmp_varname}"
# shellcheck disable=SC2004
__b3bp_tmp_value=$((${!__b3bp_tmp_varname} + 1))
printf -v "${__b3bp_tmp_varname}" '%s' "${__b3bp_tmp_value}"
else
# repeatable args, they get appended to an array
__b3bp_tmp_varname="arg_${__b3bp_tmp_opt:0:1}[@]"
debug "cli arg ${__b3bp_tmp_varname} append ${__b3bp_tmp_value}"
declare -a "${__b3bp_tmp_varname}"='("${!__b3bp_tmp_varname}" "${__b3bp_tmp_value}")'
fi
else
# non-repeatables
__b3bp_tmp_varname="arg_${__b3bp_tmp_opt:0:1}"
__b3bp_tmp_default="${!__b3bp_tmp_varname}"
if [[ -z "${OPTARG}" ]]; then
__b3bp_tmp_value=$((__b3bp_tmp_default + 1))
fi
printf -v "${__b3bp_tmp_varname}" '%s' "${__b3bp_tmp_value}"
debug "cli arg ${__b3bp_tmp_varname} = (${__b3bp_tmp_default}) -> ${!__b3bp_tmp_varname}"
fi
done
set -o nounset # no more unbound variable references expected
shift $((OPTIND-1))
if [[ "${1:-}" = "--" ]] ; then
shift
fi
fi
### Automatic validation of required option arguments
##############################################################################
for __b3bp_tmp_varname in ${!__b3bp_tmp_has_arg_*}; do
# validate only options which required an argument
[[ "${!__b3bp_tmp_varname}" = "2" ]] || continue
__b3bp_tmp_opt_short="${__b3bp_tmp_varname##*_}"
__b3bp_tmp_varname="arg_${__b3bp_tmp_opt_short}"
[[ "${!__b3bp_tmp_varname}" ]] && continue
__b3bp_tmp_varname="__b3bp_tmp_opt_short2long_${__b3bp_tmp_opt_short}"
printf -v "__b3bp_tmp_opt_long" '%s' "${!__b3bp_tmp_varname}"
[[ "${__b3bp_tmp_opt_long:-}" ]] && __b3bp_tmp_opt_long=" (--${__b3bp_tmp_opt_long//_/-})"
help "Option -${__b3bp_tmp_opt_short}${__b3bp_tmp_opt_long:-} requires an argument"
done
### Cleanup Environment variables
##############################################################################
for __tmp_varname in ${!__b3bp_tmp_*}; do
unset -v "${__tmp_varname}"
done
unset -v __tmp_varname
### Externally supplied __usage. Nothing else to do here
##############################################################################
if [[ "${__b3bp_external_usage:-}" = "true" ]]; then
unset -v __b3bp_external_usage
return
fi
### Signal trapping and backtracing
##############################################################################
function __b3bp_cleanup_before_exit () {
info "Cleaning up. Done"
}
trap __b3bp_cleanup_before_exit EXIT
# requires `set -o errtrace`
__b3bp_err_report() {
local error_code=${?}
error "Error in ${__file} in function ${1} on line ${2}"
exit ${error_code}
}
# Uncomment the following line for always providing an error backtrace
# trap '__b3bp_err_report "${FUNCNAME:-.}" ${LINENO}' ERR
### Command-line argument switches (like -d for debugmode, -h for showing helppage)
##############################################################################
# debug mode
if [[ "${arg_d:?}" = "1" ]]; then
set -o xtrace
PS4='+(${BASH_SOURCE}:${LINENO}): ${FUNCNAME[0]:+${FUNCNAME[0]}(): }'
LOG_LEVEL="7"
# Enable error backtracing
trap '__b3bp_err_report "${FUNCNAME:-.}" ${LINENO}' ERR
fi
# verbose mode
if [[ "${arg_v:?}" = "1" ]]; then
set -o verbose
fi
# no color mode
if [[ "${arg_n:?}" = "1" ]]; then
NO_COLOR="true"
fi
# help mode
if [[ "${arg_h:?}" = "1" ]]; then
# Help exists with code 1
help "Help using ${0}"
fi
### Validation. Error out if the things required for your script are not present
##############################################################################
[[ "${arg_f:-}" ]] || help "Setting a filename with -f or --file is required"
[[ "${LOG_LEVEL:-}" ]] || emergency "Cannot continue without LOG_LEVEL. "
### Runtime
##############################################################################
info "__i_am_main_script: ${__i_am_main_script}"
info "__file: ${__file}"
info "__dir: ${__dir}"
info "__base: ${__base}"
info "OSTYPE: ${OSTYPE}"
info "arg_f: ${arg_f}"
info "arg_d: ${arg_d}"
info "arg_v: ${arg_v}"
info "arg_h: ${arg_h}"
# shellcheck disable=SC2015
if [[ -n "${arg_i:-}" ]] && declare -p arg_i 2> /dev/null | grep -q '^declare \-a'; then
info "arg_i:"
for input_file in "${arg_i[@]}"; do
info " - ${input_file}"
done
elif [[ -n "${arg_i:-}" ]]; then
info "arg_i: ${arg_i}"
else
info "arg_i: 0"
fi
# shellcheck disable=SC2015
if [[ -n "${arg_x:-}" ]] && declare -p arg_x 2> /dev/null | grep -q '^declare \-a'; then
info "arg_x: ${#arg_x[@]}"
elif [[ -n "${arg_x:-}" ]]; then
info "arg_x: ${arg_x}"
else
info "arg_x: 0"
fi
info "$(echo -e "multiple lines example - line #1\\nmultiple lines example - line #2\\nimagine logging the output of 'ls -al /path/'")"
# All of these go to STDERR, so you can use STDOUT for piping machine readable information to other software
debug "Info useful to developers for debugging the application, not useful during operations."
info "Normal operational messages - may be harvested for reporting, measuring throughput, etc. - no action required."
notice "Events that are unusual but not error conditions - might be summarized in an email to developers or admins to spot potential problems - no immediate action required."
warning "Warning messages, not an error, but indication that an error will occur if action is not taken, e.g. file system 85% full - each item must be resolved within a given time."
error "Non-urgent failures, these should be relayed to developers or admins; each item must be resolved within a given time."
critical "Should be corrected immediately, but indicates failure in a primary system, an example is a loss of a backup ISP connection."
alert "Should be corrected immediately, therefore notify staff who can fix the problem. An example would be the loss of a primary ISP connection."
emergency "A \"panic\" condition usually affecting multiple apps/servers/sites. At this level it would usually notify all tech staff on call."

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{
"name": "bash3boilerplate",
"description": "Copypastable templates to write better bash scripts",
"version": "2.7.2",
"packageManager": "yarn@3.6.0+sha224.19e47520fa56c6146388fdeb438d9dcf6630c3f277a2e1180995c3bb",
"engines": {
"node": ">= 18",
"yarn": "3.6.0"
},
"scripts": {
"lint:shellcheck": "shellcheck --severity=${SHELLCHECK_SEVERITY:-info} $(find . -name '*.sh' -maxdepth 2)",
"lint:style": "test/style.pl $(find . -name '*.sh' -maxdepth 2)",
"lint": "npm-run-all -l 'lint:**'",
"release:major": "env SEMANTIC=major yarn release",
"release:minor": "env SEMANTIC=minor yarn release",
"release:patch": "env SEMANTIC=patch yarn release",
"release": "npm version ${SEMANTIC:-patch} -m \"Release %s\" && yarn version:replace && git commit main.sh src/*.sh -m 'Update version' && git push && git push --tags -f && npm publish",
"test:debug:main:repeated": "env LOG_LEVEL=7 test/acceptance.sh main-repeated",
"test:update": "env SAVE_FIXTURES=true yarn test",
"test": "test/acceptance.sh",
"version:current": "node -e 'console.log(require(\"./package.json\").version)'",
"version:replace": "replace 'v\\d+\\.\\d+\\.\\d+' \"v$(npm run --silent version:current)\" main.sh src/*.sh"
},
"devDependencies": {
"fakefile": "1.1.0",
"npm-run-all": "4.1.5",
"replace": "1.2.2"
}
}

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#!/usr/bin/env bash
# BASH3 Boilerplate: ini_val
#
# This file:
#
# - Can read and write .ini files using pure bash
#
# Limitations:
#
# - All keys inside a section of the .ini file must be unique
# - Optional comment parameter for the creation of new entries
#
# Usage as a function:
#
# source ini_val.sh
# ini_val data.ini connection.host 127.0.0.1 "Host name or IP address"
#
# Usage as a command:
#
# ini_val.sh data.ini connection.host 127.0.0.1 "Host name or IP address"
#
# Based on a template by BASH3 Boilerplate vv2.7.2
# http://bash3boilerplate.sh/#authors
#
# The MIT License (MIT)
# Copyright (c) 2013 Kevin van Zonneveld and contributors
# You are not obligated to bundle the LICENSE file with your b3bp projects as long
# as you leave these references intact in the header comments of your source files.
function ini_val() {
local file="${1:-}"
local sectionkey="${2:-}"
local val="${3:-}"
local comment="${4:-}"
local delim="="
local comment_delim=";"
local section=""
local key=""
local current=""
# add default section
local section_default="default"
if [[ ! -f "${file}" ]]; then
# touch file if not exists
touch "${file}"
fi
# Split on . for section. However, section is optional
IFS='.' read -r section key <<< "${sectionkey}"
if [[ ! "${key}" ]]; then
key="${section}"
# default section if not given
section="${section_default}"
fi
# get current value (if exists)
current=$(sed -En "/^\[/{h;d;};G;s/^${key}([[:blank:]]*)${delim}(.*)\n\[${section}\]$/\2/p" "${file}"|awk '{$1=$1};1')
# get current comment (if exists)
current_comment=$(sed -En "/^\[${section}\]/,/^\[.*\]/ s|^(${comment_delim}\[${key}\])(.*)|\2|p" "${file}"|awk '{$1=$1};1')
if ! grep -q "\[${section}\]" "${file}"; then
# create section if not exists (empty line to seperate new section for better readability)
echo >> "${file}"
echo "[${section}]" >> "${file}"
fi
if [[ ! "${val}" ]]; then
# get a value
echo "${current}"
else
# set a value
if [[ ! "${section}" ]]; then
# if no section is given, propagate the default section
section=${section_default}
fi
if [[ ! "${comment}" ]]; then
# if no comment given, keep old comment
comment="${current_comment}"
fi
# maintenance area
# a) remove comment if new given / respect section
sed -i.bak "/^\[${section}\]/,/^\[.*\]/ s|^\(${comment_delim}\[${key}\] \).*$||" "${file}"
# b) remove old key / respect section
sed -i.bak "/^\[${section}\]/,/^\[.*\]/ s|^\(${key}=\).*$||" "${file}"
# c) remove all empty lines in ini file
sed -i.bak '/^[[:space:]]*$/d' "${file}"
# d) insert line break before every section for better readability
sed -i.bak $'s/^\\[/\\\n\\[/g' "${file}"
# add to section
if [[ ! "${comment}" ]]; then
# add new key/value _without_ comment
RET="/\\[${section}\\]/a\\
${key}${delim}${val}"
else
# add new key/value _with_ preceeding comment
RET="/\\[${section}\\]/a\\
${comment_delim}[${key}] ${comment}\\
${key}${delim}${val}"
fi
sed -i.bak -e "${RET}" "${file}"
# this .bak dance is done for BSD/GNU portability: http://stackoverflow.com/a/22084103/151666
rm -f "${file}.bak"
fi
}
if [[ "${BASH_SOURCE[0]}" != "${0}" ]]; then
export -f ini_val
else
ini_val "${@}"
exit ${?}
fi

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#!/usr/bin/env bash
# BASH3 Boilerplate: megamount
#
# This file:
#
# - Takes a URL (smb, nfs, afs) and tries to mount it at a given target directory
# - Forcefully unmounts any active mount at the target directory first
# - Displays the mount's contents for verification
#
# Depends on:
#
# - ./parse_url.sh
#
# Usage as a function:
#
# source megamount.sh
# megamount smb://janedoe:abc123@192.168.0.1/documents /mnt/documents
#
# Usage as a command:
#
# megamount.sh smb://janedoe:abc123@192.168.0.1/documents /mnt/documents
#
# Based on a template by BASH3 Boilerplate vv2.7.2
# http://bash3boilerplate.sh/#authors
#
# The MIT License (MIT)
# Copyright (c) 2013 Kevin van Zonneveld and contributors
# You are not obligated to bundle the LICENSE file with your b3bp projects as long
# as you leave these references intact in the header comments of your source files.
__dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
# shellcheck source=src/parse_url.sh
source "${__dir}/parse_url.sh"
function megamount () {
local url="${1}"
local target="${2}"
local proto
local user
local pass
local host
local port
local path
proto=$(parse_url "${url}" "proto")
user=$(parse_url "${url}" "user")
pass=$(parse_url "${url}" "pass")
host=$(parse_url "${url}" "host")
port=$(parse_url "${url}" "port")
path=$(parse_url "${url}" "path")
(umount -lf "${target}" || umount -f "${target}") > /dev/null 2>&1 || true
mkdir -p "${target}"
if [[ "${proto}" = "smb://" ]]; then
mount -t cifs --verbose -o "username=${user},password=${pass},hard" "//${host}/${path}" "${target}"
elif [[ "${proto}" = "afp://" ]]; then
# start syslog-ng
# afpfsd || echo "Unable to run afpfsd. Does /dev/log exist?" && exit 1
mount_afp "${url}" "${target}"
elif [[ "${proto}" = "nfs://" ]]; then
mount -t nfs --verbose -o "vers=3,nolock,soft,intr,rsize=32768,wsize=32768" "${host}:/${path}" "${target}"
else
echo "ERR: Unknown protocol: '${proto}'"
exit 1
fi
# chmod 777 "${target}"
ls -al "${target}/"
}
if [[ "${BASH_SOURCE[0]}" != "${0}" ]]; then
export -f megamount
else
megamount "${@}"
exit ${?}
fi

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#!/usr/bin/env bash
# BASH3 Boilerplate: parse_url
#
# This file:
#
# - Takes a URL and parses protocol, user, pass, host, port, path.
#
# Based on:
#
# - http://stackoverflow.com/a/6174447/151666
#
# Usage as a function:
#
# source parse_url.sh
# parse_url 'http://johndoe:abc123@example.com:8080/index.html' pass
#
# Usage as a command:
#
# parse_url.sh 'http://johndoe:abc123@example.com:8080/index.html'
#
# Based on a template by BASH3 Boilerplate vv2.7.2
# http://bash3boilerplate.sh/#authors
#
# The MIT License (MIT)
# Copyright (c) 2013 Kevin van Zonneveld and contributors
# You are not obligated to bundle the LICENSE file with your b3bp projects as long
# as you leave these references intact in the header comments of your source files.
function parse_url() {
local parse="${1}"
local need="${2:-}"
local proto
local url
local userpass
local user
local pass
local hostport
local host
local port
local path
proto="$(echo "${parse}" | grep :// | sed -e's,^\(.*://\).*,\1,g')"
url="${parse/${proto}/}"
userpass="$(echo "${url}" | grep @ | cut -d@ -f1)"
user="$(echo "${userpass}" | grep : | cut -d: -f1)"
pass="$(echo "${userpass}" | grep : | cut -d: -f2)"
hostport="$(echo "${url/${userpass}@/}" | cut -d/ -f1)"
host="$(echo "${hostport}" | grep : | cut -d: -f1)"
port="$(echo "${hostport}" | grep : | cut -d: -f2)"
path="$(echo "${url}" | grep / | cut -d/ -f2-)"
[[ ! "${user}" ]] && user="${userpass}"
[[ ! "${host}" ]] && host="${hostport}"
if [[ ! "${port}" ]]; then
[[ "${proto}" = "http://" ]] && port="80"
[[ "${proto}" = "https://" ]] && port="443"
[[ "${proto}" = "mysql://" ]] && port="3306"
[[ "${proto}" = "redis://" ]] && port="6379"
fi
if [[ "${need}" ]]; then
echo "${!need}"
else
echo ""
echo " Use second argument to return just 1 variable."
echo " parse_url() demo: "
echo ""
echo " proto: ${proto}"
echo " user: ${user}"
echo " pass: ${pass}"
echo " host: ${host}"
echo " port: ${port}"
echo " path: ${path}"
echo ""
fi
}
if [[ "${BASH_SOURCE[0]}" != "${0}" ]]; then
export -f parse_url
else
parse_url "${@}"
exit ${?}
fi

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#!/usr/bin/env bash
# BASH3 Boilerplate: templater
#
# This file:
#
# - takes a source (template) & destination (config) filepath argument
# - then replaces placeholders with variables found in the environment
#
# Usage as a function:
#
# source templater.sh
# export NAME=kevin
# templater input.cfg output.cfg
#
# Usage as a command:
#
# ALLOW_REMAINDERS=1 templater.sh input.cfg output.cfg
#
# Based on a template by BASH3 Boilerplate vv2.7.2
# http://bash3boilerplate.sh/#authors
#
# The MIT License (MIT)
# Copyright (c) 2013 Kevin van Zonneveld and contributors
# You are not obligated to bundle the LICENSE file with your b3bp projects as long
# as you leave these references intact in the header comments of your source files.
function templater() {
ALLOW_REMAINDERS="${ALLOW_REMAINDERS:-0}"
templateSrc="${1:-}"
templateDst="${2:-}"
if [[ ! -f "${templateSrc}" ]]; then
echo "ERROR: Template source '${templateSrc}' needs to exist"
exit 1
fi
if [[ ! "${templateDst}" ]]; then
echo "ERROR: Template destination '${templateDst}' needs to be specified"
exit 1
fi
if [[ "$(command -v perl)" ]]; then
perl -p -e 's/\$\{(\w+)\}/(exists $ENV{$1} ? $ENV{$1} : "\${$1}")/eg' < "${templateSrc}" > "${templateDst}"
else
cp -f "${templateSrc}" "${templateDst}"
for var in $(env |awk -F= '{print $1}' |grep -E '^(_[A-Z0-9_]+|[A-Z0-9][A-Z0-9_]*)$'); do
sed -i.bak -e "s#\${${var}}#${!var//#/\\#/}#g" "${templateDst}"
# this .bak dance is done for BSD/GNU portability: http://stackoverflow.com/a/22084103/151666
rm -f "${templateDst}.bak"
done
fi
# cat "${templateDst}"
# shellcheck disable=SC2016
if grep '${' "${templateDst}" && [[ "${ALLOW_REMAINDERS}" = "0" ]]; then
echo "ERROR: Unable to replace the above template vars"
exit 1
fi
}
if [[ "${BASH_SOURCE[0]}" != "${0}" ]]; then
export -f templater
else
templater "${@}"
exit ${?}
fi

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#!/usr/bin/env bash
# This file:
#
# - Executes one (or all) test scenarios
# - Replaces dynamic things like hostnames, IPs, dates, etc
# - Optionally saves the results as fixtures, that later runs will be compared against
#
# Usage:
#
# ./deploy.sh
#
# Based on a template by BASH3 Boilerplate v2.0.0
# http://bash3boilerplate.sh/#authors
#
# The MIT License (MIT)
# Copyright (c) 2013 Kevin van Zonneveld and contributors
# You are not obligated to bundle the LICENSE file with your b3bp projects as long
# as you leave these references intact in the header comments of your source files.
# Exit on error. Append || true if you expect an error.
set -o errexit
# Exit on error inside any functions or subshells.
set -o errtrace
# Do not allow use of undefined vars. Use ${VAR:-} to use an undefined VAR
set -o nounset
# Catch the error in case mysqldump fails (but gzip succeeds) in `mysqldump |gzip`
set -o pipefail
# Turn on traces, useful while debugging but commented out by default
# set -o xtrace
# Set magic variables for current file, directory, os, etc.
__dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
__file="${__dir}/$(basename "${BASH_SOURCE[0]}")"
__base="$(basename "${__file}" .sh)"
__root="$(cd "$(dirname "${__dir}")" && pwd)"
__sysTmpDir="${TMPDIR:-/tmp}"
__sysTmpDir="${__sysTmpDir%/}" # <-- remove trailing slash on macosx
__accptstTmpDir=$(mktemp -d "${__sysTmpDir}/${__base}.XXXXXX")
function cleanup_before_exit () { rm -r "${__accptstTmpDir:?}"; }
trap cleanup_before_exit EXIT
cmdSed="sed"
cmdTimeout="timeout"
if [[ "${OSTYPE}" = "darwin"* ]]; then
cmdSed="gsed"
cmdTimeout="gtimeout"
fi
if [[ ! "$(command -v ${cmdSed})" ]]; then
echo "Please install ${cmdSed}"
exit 1
fi
if [[ ! "$(command -v ${cmdTimeout})" ]]; then
echo "Please install ${cmdTimeout}"
exit 1
fi
__node="$(command -v node)"
__arch="amd64"
# explicitly setting NO_COLOR to false will make b3bp ignore TERM
# not being "xterm*" or "screen*" and STDERR not being connected to a terminal
# it's the opposite of NO_COLOR="true" - it forces color, no matter what
export NO_COLOR="false"
# Running prepare before other scenarios is important on Travis,
# so that stdio can diverge - and we can enforce stricter
# stdio comparison on all other tests.
while IFS=$'\n' read -r scenario; do
scenario="$(dirname "${scenario}")"
scenario="${scenario##${__dir}/scenario/}"
[[ "${scenario}" = "prepare" ]] && continue
[[ "${1:-}" ]] && [[ "${scenario}" != "${1}" ]] && continue
echo "==> Scenario: ${scenario}"
pushd "${__dir}/scenario/${scenario}" > /dev/null
# Run scenario
(${cmdTimeout} --kill-after=6m 5m bash ./run.sh \
> "${__accptstTmpDir}/${scenario}.stdio" 2>&1; \
echo "${?}" > "${__accptstTmpDir}/${scenario}.exitcode" \
) || true
# Clear out environmental specifics
for typ in stdio exitcode; do
curFile="${__accptstTmpDir}/${scenario}.${typ}"
"${cmdSed}" -i \
-e "s@${__node}@{node}@g" "${curFile}" \
-e "s@${__root}@{root}@g" "${curFile}" \
-e "s@${__sysTmpDir}@{tmpdir}@g" "${curFile}" \
-e "s@/tmp@{tmpdir}@g" "${curFile}" \
-e "s@${HOME:-/home/travis}@{home}@g" "${curFile}" \
-e "s@${USER:-travis}@{user}@g" "${curFile}" \
-e "s@travis@{user}@g" "${curFile}" \
-e "s@kvz@{user}@g" "${curFile}" \
-e "s@{root}/node_modules/\\.bin/node@{node}@g" "${curFile}" \
-e "s@{home}/build/{user}/fre{node}@{node}@g" "${curFile}" \
-e "s@${HOSTNAME}@{hostname}@g" "${curFile}" \
-e "s@${__arch}@{arch}@g" "${curFile}" \
-e "s@${OSTYPE}@{OSTYPE}@g" "${curFile}" \
-e "s@OSX@{os}@g" "${curFile}" \
-e "s@Linux@{os}@g" "${curFile}" \
|| false
if grep -q 'ACCPTST:STDIO_REPLACE_IPS' "${curFile}"; then
"${cmdSed}" -i \
-r 's@[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}@{ip}@g' \
"${curFile}"
# IPs vary in length. Ansible uses padding. {ip} does not vary in length
# so kill the padding after it for consistent output
"${cmdSed}" -i \
-r 's@\{ip\}\s+@{ip} @g' \
"${curFile}"
fi
if grep -q 'ACCPTST:STDIO_REPLACE_UUIDS' "${curFile}"; then
"${cmdSed}" -i \
-r 's@[0-9a-f\-]{32,40}@{uuid}@g' \
"${curFile}"
fi
if grep -q 'ACCPTST:STDIO_REPLACE_BIGINTS' "${curFile}"; then
# Such as: 3811298194
"${cmdSed}" -i \
-r 's@[0-9]{7,64}@{bigint}@g' \
"${curFile}"
fi
if grep -q 'ACCPTST:STDIO_REPLACE_DATETIMES' "${curFile}"; then
# Such as: 2016-02-10 15:38:44.420094
"${cmdSed}" -i \
-r 's@[0-9]{4}-[0-9]{2}-[0-9]{2} [0-9]{2}:[0-9]{2}:[0-9]{2}@{datetime}@g' \
"${curFile}"
fi
if grep -q 'ACCPTST:STDIO_REPLACE_LONGTIMES' "${curFile}"; then
# Such as: 2016-02-10 15:38:44.420094
"${cmdSed}" -i \
-r 's@[0-9]{4}-[0-9]{2}-[0-9]{2} [0-9]{2}:[0-9]{2}:[0-9]{2}.[0-9]{6}@{longtime}@g' \
"${curFile}"
fi
if grep -q 'ACCPTST:STDIO_REPLACE_DURATIONS' "${curFile}"; then
# Such as: 0:00:00.001991
"${cmdSed}" -i \
-r 's@[0-9]{1,2}:[0-9]{2}:[0-9]{2}.[0-9]{6}@{duration}@g' \
"${curFile}"
fi
if grep -q 'ACCPTST:STDIO_REPLACE_REMOTE_EXEC' "${curFile}"; then
grep -Ev 'remote-exec\): [ a-zA-Z]' "${curFile}" > "${__sysTmpDir}/accptst-filtered.txt"
mv "${__sysTmpDir}/accptst-filtered.txt" "${curFile}"
fi
done
# Save these as new fixtures?
if [[ "${SAVE_FIXTURES:-}" = "true" ]]; then
for typ in stdio exitcode; do
curFile="${__accptstTmpDir}/${scenario}.${typ}"
cp -f \
"${curFile}" \
"${__dir}/fixture/${scenario}.${typ}"
done
fi
# Compare
for typ in stdio exitcode; do
curFile="${__accptstTmpDir}/${scenario}.${typ}"
echo -n " comparing ${typ}.. "
if [[ "${typ}" = "stdio" ]]; then
if grep -q 'ACCPTST:STDIO_SKIP_COMPARE' "${curFile}"; then
echo "skip"
continue
fi
fi
if ! diff --strip-trailing-cr "${__dir}/fixture/${scenario}.${typ}" "${curFile}"; then
echo -e "\\n\\n==> MISMATCH OF: ${scenario}.${typ} ---^"
echo -e "\\n\\n==> EXPECTED STDIO: "
cat "${__dir}/fixture/${scenario}.stdio" || true
echo -e "\\n\\n==> ACTUAL STDIO: "
cat "${__accptstTmpDir}/${scenario}.stdio" || true
exit 1
fi
echo "✓"
done
popd > /dev/null
done <<< "$(find "${__dir}/scenario" -type f -iname 'run.sh')"
[[ "${1:-}" ]] && exit 0
# Ensure correct syntax with all available bashes
# shellcheck disable=SC2230
# "command -v" is not a substitute for "which -a"
while IFS=$'\n' read -r bash; do
if [[ "${bash:-}" = "" ]]; then
continue
fi
# shellcheck disable=SC2016
echo "==> ${bash} -n $(${bash} -c 'echo "(${BASH_VERSION})"')"
pushd "${__root}" > /dev/null
failed="false"
while IFS=$'\n' read -r file; do
[[ "${file}" =~ ^\./node_modules/ ]] && continue
echo -n " ${file}.. "
if ! "${bash}" -n "${file}" 2>> "${__accptstTmpDir}/${bash//\//.}.err"; then
echo "✗"
failed="true"
continue
fi
echo "✓"
done <<< "$(find . -type f -iname '*.sh')"
popd > /dev/null
if [[ "${failed}" = "true" ]]; then
cat "${__accptstTmpDir}/${bash//\//.}.err"
exit 1
fi
done <<< "$(which -a bash 2>/dev/null)"
exit 0

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ACCPTST:STDIO_REPLACE_DATETIMES
{datetime} UTC [ debug] cli arg arg_f = () -> {tmpdir}/x
{datetime} UTC [ info] __i_am_main_script: 0
{datetime} UTC [ info] __file: {root}/example.sh
{datetime} UTC [ info] __dir: {root}
{datetime} UTC [ info] __base: example
{datetime} UTC [ info] OSTYPE: {OSTYPE}
{datetime} UTC [ info] arg_f: {tmpdir}/x
{datetime} UTC [ info] arg_d: 0
{datetime} UTC [ info] arg_v: 0
{datetime} UTC [ info] arg_h: 0
{datetime} UTC [ info] arg_i: 0
{datetime} UTC [ info] arg_x: 0
{datetime} UTC [ info] multiple lines example - line #1
{datetime} UTC [ info] multiple lines example - line #2
{datetime} UTC [ info] imagine logging the output of 'ls -al /path/'
{datetime} UTC [ debug] Info useful to developers for debugging the application, not useful during operations.
{datetime} UTC [ info] Normal operational messages - may be harvested for reporting, measuring throughput, etc. - no action required.
{datetime} UTC [ notice] Events that are unusual but not error conditions - might be summarized in an email to developers or admins to spot potential problems - no immediate action required.
{datetime} UTC [ warning] Warning messages, not an error, but indication that an error will occur if action is not taken, e.g. file system 85% full - each item must be resolved within a given time.
{datetime} UTC [ error] Non-urgent failures, these should be relayed to developers or admins; each item must be resolved within a given time.
{datetime} UTC [ critical] Should be corrected immediately, but indicates failure in a primary system, an example is a loss of a backup ISP connection.
{datetime} UTC [ alert] Should be corrected immediately, therefore notify staff who can fix the problem. An example would be the loss of a primary ISP connection.
{datetime} UTC [emergency] A "panic" condition usually affecting multiple apps/servers/sites. At this level it would usually notify all tech staff on call.
{datetime} UTC [ info] Cleaning up. Done

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--> command: Read 3 values
exists
127.0.0.1
nginx, nodejs
--> command: Replace three values in-place and show result
[default]
orphan=no more
[connection]
host=192.168.0.1
[software]
packages=vim
[comment]
;[command] got this new comment
command=works like a chame
;[new_command] last addition will be moved downwards again after next command
new_command=commented too
--> function: Read 3 values
exists
127.0.0.1
nginx, nodejs
--> function: Replace three values in-place and show result
[default]
orphan=no more
[connection]
host=192.168.0.1
[software]
packages=vim
[comment]
;[command] got this new comment
command=works like a chame
;[new_command] last addition will be moved downwards again after next command
new_command=commented too

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ACCPTST:STDIO_REPLACE_DATETIMES
{datetime} UTC [ debug] cli arg arg_f = () -> {tmpdir}/x
{datetime} UTC [ info] __i_am_main_script: 1
{datetime} UTC [ info] __file: {root}/main.sh
{datetime} UTC [ info] __dir: {root}
{datetime} UTC [ info] __base: main
{datetime} UTC [ info] OSTYPE: {OSTYPE}
{datetime} UTC [ info] arg_f: {tmpdir}/x
{datetime} UTC [ info] arg_d: 0
{datetime} UTC [ info] arg_v: 0
{datetime} UTC [ info] arg_h: 0
{datetime} UTC [ info] arg_i: 0
{datetime} UTC [ info] arg_x: 0
{datetime} UTC [ info] multiple lines example - line #1
{datetime} UTC [ info] multiple lines example - line #2
{datetime} UTC [ info] imagine logging the output of 'ls -al /path/'
{datetime} UTC [ debug] Info useful to developers for debugging the application, not useful during operations.
{datetime} UTC [ info] Normal operational messages - may be harvested for reporting, measuring throughput, etc. - no action required.
{datetime} UTC [ notice] Events that are unusual but not error conditions - might be summarized in an email to developers or admins to spot potential problems - no immediate action required.
{datetime} UTC [ warning] Warning messages, not an error, but indication that an error will occur if action is not taken, e.g. file system 85% full - each item must be resolved within a given time.
{datetime} UTC [ error] Non-urgent failures, these should be relayed to developers or admins; each item must be resolved within a given time.
{datetime} UTC [ critical] Should be corrected immediately, but indicates failure in a primary system, an example is a loss of a backup ISP connection.
{datetime} UTC [ alert] Should be corrected immediately, therefore notify staff who can fix the problem. An example would be the loss of a primary ISP connection.
{datetime} UTC [emergency] A "panic" condition usually affecting multiple apps/servers/sites. At this level it would usually notify all tech staff on call.
{datetime} UTC [ info] Cleaning up. Done

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ACCPTST:STDIO_REPLACE_DATETIMES
Help using {root}/main.sh
-f --file [arg] Filename to process. Required.
-t --temp [arg] Location of tempfile. Default="{tmpdir}/bar"
-v Enable verbose mode, print script as it is executed
-d --debug Enables debug mode
-h --help This page
-n --no-color Disable color output
-1 --one Do just one thing
-i --input [arg] File to process. Can be repeated.
-x Specify a flag. Can be repeated.
This is Bash3 Boilerplate's help text. Feel free to add any description of your
program or elaborate more on command-line arguments. This section is not
parsed and will be added as-is to the help.
{datetime} UTC [ info] Cleaning up. Done

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ACCPTST:STDIO_REPLACE_DATETIMES
{datetime} UTC [ info] arg_f: {tmpdir}/x
{datetime} UTC [ info] arg_f: {tmpdir}/x
{datetime} UTC [ info] arg_f: {tmpdir}/x

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ACCPTST:STDIO_REPLACE_DATETIMES
{datetime} UTC [ debug] cli arg arg_f = () -> {tmpdir}/x
{datetime} UTC [ info] __i_am_main_script: 1
{datetime} UTC [ info] __file: {root}/main.sh
{datetime} UTC [ info] __dir: {root}
{datetime} UTC [ info] __base: main
{datetime} UTC [ info] OSTYPE: {OSTYPE}
{datetime} UTC [ info] arg_f: {tmpdir}/x
{datetime} UTC [ info] arg_d: 0
{datetime} UTC [ info] arg_v: 0
{datetime} UTC [ info] arg_h: 0
{datetime} UTC [ info] arg_i: 0
{datetime} UTC [ info] arg_x: 0
{datetime} UTC [ info] multiple lines example - line #1
{datetime} UTC [ info] multiple lines example - line #2
{datetime} UTC [ info] imagine logging the output of 'ls -al /path/'
{datetime} UTC [ debug] Info useful to developers for debugging the application, not useful during operations.
{datetime} UTC [ info] Normal operational messages - may be harvested for reporting, measuring throughput, etc. - no action required.
{datetime} UTC [ notice] Events that are unusual but not error conditions - might be summarized in an email to developers or admins to spot potential problems - no immediate action required.
{datetime} UTC [ warning] Warning messages, not an error, but indication that an error will occur if action is not taken, e.g. file system 85% full - each item must be resolved within a given time.
{datetime} UTC [ error] Non-urgent failures, these should be relayed to developers or admins; each item must be resolved within a given time.
{datetime} UTC [ critical] Should be corrected immediately, but indicates failure in a primary system, an example is a loss of a backup ISP connection.
{datetime} UTC [ alert] Should be corrected immediately, therefore notify staff who can fix the problem. An example would be the loss of a primary ISP connection.
{datetime} UTC [emergency] A "panic" condition usually affecting multiple apps/servers/sites. At this level it would usually notify all tech staff on call.
{datetime} UTC [ info] Cleaning up. Done

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ACCPTST:STDIO_REPLACE_DATETIMES
{datetime} UTC [ info] arg_i:
{datetime} UTC [ info] - simple_input
{datetime} UTC [ info] - input_in_quotes
{datetime} UTC [ info] - input with spaces
{datetime} UTC [ info] - input with "quotes"
{datetime} UTC [ info] - last_input
{datetime} UTC [ info] arg_x: 3
{datetime} UTC [ info] arg_x: 4

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ACCPTST:STDIO_REPLACE_DATETIMES
{datetime} UTC [ info] arg_1: 0
{datetime} UTC [ info] arg_2: 0
{datetime} UTC [ info] arg_3: 'THREE'
{datetime} UTC [ info] arg_4: "FOUR"
{datetime} UTC [ info] arg_5: OOOPS
{datetime} UTC [ info] arg_6:

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ACCPTST:STDIO_REPLACE_DATETIMES
# complain about -3
Option -3 (--three) requires an argument
-0 --zero Do nothing.
-1 --one Do one thing. Required.
More description.
-2 --two Do two things.
More. Required. Description.
-3 --three [arg] Do three things.
Required.
-4 --four {arg} Do four things.
-5 --five {arg} Do five things. Required. Maybe.
-6 --six [arg] Do six things. Not Required.
Required, it is not.
-7 --seven [arg] Required. Or bust.
-8 --eight [arg] Do eight things.
More.Required.Description.
-a [arg] Do A. Required.
Default="do-a"
-b {arg} Do B.Default="do-b"
-c [arg] Required. Default="do-c"
-d {arg} Default="do-d"
This is Bash3 Boilerplate's help text. Feel free to add any description of your
program or elaborate more on command-line arguments. This section is not
parsed and will be added as-is to the help.
# complain about -4
Option -4 (--four) requires an argument
-0 --zero Do nothing.
-1 --one Do one thing. Required.
More description.
-2 --two Do two things.
More. Required. Description.
-3 --three [arg] Do three things.
Required.
-4 --four {arg} Do four things.
-5 --five {arg} Do five things. Required. Maybe.
-6 --six [arg] Do six things. Not Required.
Required, it is not.
-7 --seven [arg] Required. Or bust.
-8 --eight [arg] Do eight things.
More.Required.Description.
-a [arg] Do A. Required.
Default="do-a"
-b {arg} Do B.Default="do-b"
-c [arg] Required. Default="do-c"
-d {arg} Default="do-d"
This is Bash3 Boilerplate's help text. Feel free to add any description of your
program or elaborate more on command-line arguments. This section is not
parsed and will be added as-is to the help.
# complain about -5
Option -5 (--five) requires an argument
-0 --zero Do nothing.
-1 --one Do one thing. Required.
More description.
-2 --two Do two things.
More. Required. Description.
-3 --three [arg] Do three things.
Required.
-4 --four {arg} Do four things.
-5 --five {arg} Do five things. Required. Maybe.
-6 --six [arg] Do six things. Not Required.
Required, it is not.
-7 --seven [arg] Required. Or bust.
-8 --eight [arg] Do eight things.
More.Required.Description.
-a [arg] Do A. Required.
Default="do-a"
-b {arg} Do B.Default="do-b"
-c [arg] Required. Default="do-c"
-d {arg} Default="do-d"
This is Bash3 Boilerplate's help text. Feel free to add any description of your
program or elaborate more on command-line arguments. This section is not
parsed and will be added as-is to the help.
# complain about -8 (because -7 syntax is not supported)
Option -8 (--eight) requires an argument
-0 --zero Do nothing.
-1 --one Do one thing. Required.
More description.
-2 --two Do two things.
More. Required. Description.
-3 --three [arg] Do three things.
Required.
-4 --four {arg} Do four things.
-5 --five {arg} Do five things. Required. Maybe.
-6 --six [arg] Do six things. Not Required.
Required, it is not.
-7 --seven [arg] Required. Or bust.
-8 --eight [arg] Do eight things.
More.Required.Description.
-a [arg] Do A. Required.
Default="do-a"
-b {arg} Do B.Default="do-b"
-c [arg] Required. Default="do-c"
-d {arg} Default="do-d"
This is Bash3 Boilerplate's help text. Feel free to add any description of your
program or elaborate more on command-line arguments. This section is not
parsed and will be added as-is to the help.
# complain about -d (because -d syntax is not supported)
Option -d requires an argument
-0 --zero Do nothing.
-1 --one Do one thing. Required.
More description.
-2 --two Do two things.
More. Required. Description.
-3 --three [arg] Do three things.
Required.
-4 --four {arg} Do four things.
-5 --five {arg} Do five things. Required. Maybe.
-6 --six [arg] Do six things. Not Required.
Required, it is not.
-7 --seven [arg] Required. Or bust.
-8 --eight [arg] Do eight things.
More.Required.Description.
-a [arg] Do A. Required.
Default="do-a"
-b {arg} Do B.Default="do-b"
-c [arg] Required. Default="do-c"
-d {arg} Default="do-d"
This is Bash3 Boilerplate's help text. Feel free to add any description of your
program or elaborate more on command-line arguments. This section is not
parsed and will be added as-is to the help.
# complain about nothing
{datetime} UTC [ info] arg_0: 0
{datetime} UTC [ info] arg_1: 0
{datetime} UTC [ info] arg_2: 0
{datetime} UTC [ info] arg_3: arg3
{datetime} UTC [ info] arg_4: arg4
{datetime} UTC [ info] arg_5: arg5
{datetime} UTC [ info] arg_6:
{datetime} UTC [ info] arg_7:
{datetime} UTC [ info] arg_8: arg8
{datetime} UTC [ info] arg_a: do-a
{datetime} UTC [ info] arg_b: do-b
{datetime} UTC [ info] arg_c: do-c
{datetime} UTC [ info] arg_d: argd
# test for issue #108
{datetime} UTC [ info] arg_0: 1
{datetime} UTC [ info] arg_1: 0
{datetime} UTC [ info] arg_2: 0
{datetime} UTC [ info] arg_3: arg3
{datetime} UTC [ info] arg_4: value
{datetime} UTC [ info] arg_5: arg5
{datetime} UTC [ info] arg_6:
{datetime} UTC [ info] arg_7:
{datetime} UTC [ info] arg_8: arg8
{datetime} UTC [ info] arg_a: do-a
{datetime} UTC [ info] arg_b: do-b
{datetime} UTC [ info] arg_c: do-c
{datetime} UTC [ info] arg_d: argd

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@ -0,0 +1,2 @@
ERR: Unknown protocol: 'foobarfs://'
ERR: Unknown protocol: 'foobarfs://'

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@ -0,0 +1,24 @@
abc123
Use second argument to return just 1 variable.
parse_url() demo:
proto: http://
user: johndoe
pass: abc123
host: example.com
port: 8080
path: index.html
abc123
Use second argument to return just 1 variable.
parse_url() demo:
proto: http://
user: johndoe
pass: abc123
host: example.com
port: 8080
path: index.html

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@ -0,0 +1,14 @@
--
[connection]
host = 127.0.0.1
--
[connection]
host = 127.0.0.1
--
port = ${I_DONT_EXIST}
[connection]
host = 127.0.0.1
port = ${I_DONT_EXIST}
--
port = ${I_DONT_EXIST}
ERROR: Unable to replace the above template vars

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@ -0,0 +1,15 @@
#!/usr/bin/env bash
set -o pipefail
set -o errexit
set -o nounset
# set -o xtrace
__dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
__root="$(cd "$(dirname "$(dirname "$(dirname "${__dir}")")")" && pwd)"
export LOG_LEVEL=7
echo "ACCPTST:STDIO_REPLACE_DATETIMES"
# shellcheck source=example.sh
source "${__root}/example.sh" -f /tmp/x

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@ -0,0 +1,8 @@
[default]
orphan=exists
[connection]
host=127.0.0.1
[software]
packages=nginx, nodejs

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@ -0,0 +1,54 @@
#!/usr/bin/env bash
set -o pipefail
set -o errexit
set -o nounset
# set -o xtrace
# Set magic variables for current FILE & DIR
__dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
__root="$(cd "$(dirname "$(dirname "$(dirname "${__dir}")")")" && pwd)"
# echo "ACCPTST:STDIO_REPLACE_DATETIMES"
# Use as standalone:
cp -f data.ini dummy.ini
echo "--> command: Read 3 values"
bash "${__root}/src/ini_val.sh" ./dummy.ini orphan
bash "${__root}/src/ini_val.sh" ./dummy.ini connection.host
bash "${__root}/src/ini_val.sh" ./dummy.ini software.packages
bash "${__root}/src/ini_val.sh" ./dummy.ini comment.command
echo "--> command: Replace three values in-place and show result"
bash "${__root}/src/ini_val.sh" ./dummy.ini orphan "no more"
bash "${__root}/src/ini_val.sh" ./dummy.ini connection.host "192.168.0.1"
bash "${__root}/src/ini_val.sh" ./dummy.ini software.packages "vim"
bash "${__root}/src/ini_val.sh" ./dummy.ini comment.command "commented" "this key is commented"
bash "${__root}/src/ini_val.sh" ./dummy.ini comment.new_command "commented too" "last addition will be moved downwards again after next command"
bash "${__root}/src/ini_val.sh" ./dummy.ini comment.command "works like a chame" "got this new comment"
cat dummy.ini
rm -f dummy.ini
# Use as include:
cp -f data.ini dummy.ini
# shellcheck source=main.sh
source "${__root}/src/ini_val.sh"
echo "--> function: Read 3 values"
ini_val ./dummy.ini orphan
ini_val ./dummy.ini connection.host
ini_val ./dummy.ini software.packages
ini_val ./dummy.ini comment.command
echo "--> function: Replace three values in-place and show result"
ini_val ./dummy.ini orphan "no more"
ini_val ./dummy.ini connection.host "192.168.0.1"
ini_val ./dummy.ini software.packages "vim"
ini_val ./dummy.ini comment.command "commented" "this key is commited"
ini_val ./dummy.ini comment.new_command "commented too" "last addition will be moved downwards again after next command"
ini_val ./dummy.ini comment.command "works like a chame" "got this new comment"
cat dummy.ini
rm -f dummy.ini

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@ -0,0 +1,12 @@
#!/usr/bin/env bash
set -o pipefail
set -o errexit
set -o nounset
# set -o xtrace
__dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
__root="$(cd "$(dirname "$(dirname "$(dirname "${__dir}")")")" && pwd)"
echo "ACCPTST:STDIO_REPLACE_DATETIMES"
env LOG_LEVEL=7 bash "${__root}/main.sh" -f /tmp/x

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@ -0,0 +1,12 @@
#!/usr/bin/env bash
set -o pipefail
set -o errexit
set -o nounset
# set -o xtrace
__dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
__root="$(cd "$(dirname "$(dirname "$(dirname "${__dir}")")")" && pwd)"
echo "ACCPTST:STDIO_REPLACE_DATETIMES"
bash "${__root}/main.sh" -f /tmp/x -h

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@ -0,0 +1,16 @@
#!/usr/bin/env bash
# set -o pipefail
# set -o errexit
set -o nounset
# set -o xtrace
__dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
__root="$(cd "$(dirname "$(dirname "$(dirname "${__dir}")")")" && pwd)"
echo "ACCPTST:STDIO_REPLACE_DATETIMES"
(
env LOG_LEVEL=6 bash "${__root}/main.sh" --file /tmp/x;
env LOG_LEVEL=6 bash "${__root}/main.sh" --file=/tmp/x;
env LOG_LEVEL=6 bash "${__root}/main.sh" -f /tmp/x
) 2>&1 |grep arg_f

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@ -0,0 +1,12 @@
#!/usr/bin/env bash
set -o pipefail
set -o errexit
set -o nounset
# set -o xtrace
__dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
__root="$(cd "$(dirname "$(dirname "$(dirname "${__dir}")")")" && pwd)"
echo "ACCPTST:STDIO_REPLACE_DATETIMES"
env LOG_LEVEL=7 NO_COLOR=true bash "${__root}/main.sh" -f /tmp/x

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@ -0,0 +1,19 @@
#!/usr/bin/env bash
# set -o pipefail
# set -o errexit
set -o nounset
# set -o xtrace
__dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
__root="$(cd "$(dirname "$(dirname "$(dirname "${__dir}")")")" && pwd)"
echo "ACCPTST:STDIO_REPLACE_DATETIMES"
(
env LOG_LEVEL="${LOG_LEVEL:-6}" bash "${__root}/main.sh" -f dummy -i simple_input -i "input_in_quotes" -i "input with spaces" -i "input with \"quotes\"" -i last_input
) 2>&1 |grep arg_i -A 5
(
env LOG_LEVEL="${LOG_LEVEL:-6}" bash "${__root}/main.sh" -x -f dummy -x -x
env LOG_LEVEL="${LOG_LEVEL:-6}" bash "${__root}/main.sh" -f dummy -xxxx
) 2>&1 |grep arg_x

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@ -0,0 +1,32 @@
#!/usr/bin/env bash
set -o pipefail
set -o errexit
set -o nounset
# set -o xtrace
__dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
__root="$(cd "$(dirname "$(dirname "$(dirname "${__dir}")")")" && pwd)"
read -r -d '' __usage <<-'EOF' || true # exits non-zero when EOF encountered
-1 --one Do one thing. Default="ONE"
More description.
-2 --two Do two things.
More description. Default="TWO"
-3 --three [arg] Do three things. Default="'THREE'"
More description.
-4 --four [arg] Do four things.
More description. Default='"FOUR"'
-5 --five [arg] Do five things. Default="FIVE"
More description. Default='OOOPS'
-6 --six [arg] Do six things.
More description.
EOF
export __usage
echo "ACCPTST:STDIO_REPLACE_DATETIMES"
# shellcheck source=main.sh
source "${__root}/main.sh"
for argument in ${!arg_*}; do info "${argument}: ${!argument}"; done

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@ -0,0 +1,64 @@
#!/usr/bin/env bash
# shellcheck source=main.sh
set -o pipefail
set -o errexit
set -o nounset
# set -o xtrace
__dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
__root="$(cd "$(dirname "$(dirname "$(dirname "${__dir}")")")" && pwd)"
read -r -d '' __usage <<-'EOF' || true # exits non-zero when EOF encountered
-0 --zero Do nothing.
-1 --one Do one thing. Required.
More description.
-2 --two Do two things.
More. Required. Description.
-3 --three [arg] Do three things.
Required.
-4 --four {arg} Do four things.
-5 --five {arg} Do five things. Required. Maybe.
-6 --six [arg] Do six things. Not Required.
Required, it is not.
-7 --seven [arg] Required. Or bust.
-8 --eight [arg] Do eight things.
More.Required.Description.
-a [arg] Do A. Required.
Default="do-a"
-b {arg} Do B.Default="do-b"
-c [arg] Required. Default="do-c"
-d {arg} Default="do-d"
EOF
export __usage
export NO_COLOR="true"
echo "ACCPTST:STDIO_REPLACE_DATETIMES"
echo "# complain about -3"
(source "${__root}/main.sh") || true
echo "# complain about -4"
(source "${__root}/main.sh" -3 arg3) || true
echo "# complain about -5"
(source "${__root}/main.sh" -3 arg3 -4 arg4) || true
echo "# complain about -8 (because -7 syntax is not supported)"
(source "${__root}/main.sh" -3 arg3 -4 arg4 -5 arg5) || true
echo "# complain about -d (because -d syntax is not supported)"
(source "${__root}/main.sh" -3 arg3 -4 arg4 -5 arg5 -8 arg8) || true
echo "# complain about nothing"
(
source "${__root}/main.sh" -3 arg3 -4 arg4 -5 arg5 -8 arg8 -d argd
for argument in ${!arg_*}; do info "${argument}: ${!argument}"; done
)
echo "# test for issue #108"
(
source "${__root}/main.sh" -3 arg3 -5 arg5 -8 arg8 -d argd --four value --zero
for argument in ${!arg_*}; do info "${argument}: ${!argument}"; done
)

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@ -0,0 +1,21 @@
#!/usr/bin/env bash
set -o pipefail
set -o errexit
set -o nounset
# set -o xtrace
__dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
__root="$(cd "$(dirname "$(dirname "$(dirname "${__dir}")")")" && pwd)"
__sysTmpDir="${TMPDIR:-/tmp}"
__sysTmpDir="${__sysTmpDir%/}" # <-- remove trailing slash on macosx
# Currently I only know how to test a failing condition here since
# it's too invasive to create actual mounts to play with on a system
bash "${__root}/src/megamount.sh" 'foobarfs://janedoe:abc123@192.168.0.1/documents' "${__sysTmpDir}/mnt/documents" || true
# shellcheck source=src/megamount.sh
source "${__root}/src/megamount.sh"
megamount 'foobarfs://janedoe:abc123@192.168.0.1/documents' "${__sysTmpDir}/mnt/documents"

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@ -0,0 +1,17 @@
#!/usr/bin/env bash
set -o pipefail
set -o errexit
set -o nounset
# set -o xtrace
__dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
__root="$(cd "$(dirname "$(dirname "$(dirname "${__dir}")")")" && pwd)"
bash "${__root}/src/parse_url.sh" 'http://johndoe:abc123@example.com:8080/index.html' pass
bash "${__root}/src/parse_url.sh" 'http://johndoe:abc123@example.com:8080/index.html'
# shellcheck source=src/parse_url.sh
source "${__root}/src/parse_url.sh"
parse_url 'http://johndoe:abc123@example.com:8080/index.html' pass
parse_url 'http://johndoe:abc123@example.com:8080/index.html'

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@ -0,0 +1,2 @@
[connection]
host = ${TARGET_HOST}

View File

@ -0,0 +1,3 @@
[connection]
host = ${TARGET_HOST}
port = ${I_DONT_EXIST}

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@ -0,0 +1,36 @@
#!/usr/bin/env bash
set -o pipefail
set -o errexit
set -o nounset
# set -o xtrace
__dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
__file="${__dir}/$(basename "${BASH_SOURCE[0]}")"
__base="$(basename "${__file}" .sh)"
__root="$(cd "$(dirname "$(dirname "$(dirname "${__dir}")")")" && pwd)"
__templaterTmpFile=$(mktemp "${TMPDIR:-/tmp}/${__base}.XXXXXX")
function cleanup_before_exit () { rm "${__templaterTmpFile:?}"; }
trap cleanup_before_exit EXIT
echo "--"
env TARGET_HOST="127.0.0.1" bash "${__root}/src/templater.sh" ./app.template.cfg "${__templaterTmpFile}"
cat "${__templaterTmpFile}"
echo "--"
export TARGET_HOST="127.0.0.1"
# shellcheck source=src/templater.sh
source "${__root}/src/templater.sh"
templater ./app.template.cfg "${__templaterTmpFile}"
cat "${__templaterTmpFile}"
echo "--"
env ALLOW_REMAINDERS="1" TARGET_HOST="127.0.0.1" bash "${__root}/src/templater.sh" ./break.template.cfg "${__templaterTmpFile}"
cat "${__templaterTmpFile}"
echo "--"
env TARGET_HOST="127.0.0.1" bash "${__root}/src/templater.sh" ./break.template.cfg "${__templaterTmpFile}"
cat "${__templaterTmpFile}"

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@ -0,0 +1,45 @@
#!/usr/bin/env perl
use strict;
use warnings;
die "usage: $0 <file>\n" if (not @ARGV);
my $rc = 0;
my $file = shift;
open(my $fh, '<', $file) or die "Cannot open \`$file' for read: $!\n";
while (<$fh>) {
next if (/^\s*#/);
my $errors = 0;
# remove everything between single quotes
# this will remove too much in case of: echo "var='$var'"
# and thus miss an opportunity to complain later on
# also it mangles the input line irreversible
s/'[^']+'/'___'/g;
# highlight unbraced variables--
# unless properly backslash'ed
$errors += s/((?:^|[^\\]))(((\\\\)+)?\$\w)/$1\033[31m$2\033[0m/g;
# highlight single square brackets
$errors += s/((?:^|\s+))\[([^\[].+[^\]])\](\s*(;|&&|\|\|))/$1\033[31m\[\033[0m$2\033[31m\]\033[0m$3/g;
# highlight double equal sign
$errors += s/(\[\[.*)(==)(.*\]\])/$1\033[31m$2\033[0m$3/g;
# highlight tabs mixed with whitespace at beginning of lines
$errors += s/^( *)(\t+ *)/\033[31m\[$2\]\033[0m/;
# highlight trailing whitespace
$errors += s/([ \t]+)$/\033[31m\[$1\]\033[0m/;
next if (not $errors);
print "${file}[$.]: $_";
$rc = 1;
}
close($fh);
exit $rc;

File diff suppressed because it is too large Load Diff

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@ -0,0 +1,168 @@
parserOptions:
ecmaVersion: latest
sourceType: module
env:
es6: true
jasmine: true
node: true
extends: eslint:recommended
rules:
accessor-pairs: error
array-bracket-spacing:
- error
- never
array-callback-return: error
block-spacing:
- error
- never
brace-style: error
comma-dangle: error
comma-spacing: error
comma-style: error
complexity:
- error
- 10
computed-property-spacing: error
consistent-return: error
consistent-this: error
constructor-super: error
curly: error
default-case: error
dot-notation: error
eol-last: error
eqeqeq: error
generator-star-spacing: error
global-require: off
guard-for-in: error
jsx-quotes: error
key-spacing: error
keyword-spacing: error
linebreak-style: error
lines-around-comment:
- error
-
allowBlockStart: true
allowObjectStart: true
allowArrayStart: true
max-statements-per-line: error
new-cap: error
new-parens: error
no-array-constructor: error
no-bitwise: error
no-caller: error
no-case-declarations: error
no-catch-shadow: error
no-class-assign: error
no-cond-assign: error
no-confusing-arrow: error
no-console: off
no-const-assign: error
no-constant-condition: error
no-continue: error
no-delete-var: error
no-dupe-args: error
no-dupe-class-members: error
no-dupe-keys: error
no-duplicate-case: error
no-duplicate-imports: error
no-empty: off
no-empty-character-class: error
no-empty-pattern: error
no-eq-null: error
no-eval: error
no-extend-native: error
no-extra-bind: error
no-extra-boolean-cast: error
no-extra-label: error
no-extra-semi: error
no-fallthrough: error
no-func-assign: error
no-implied-eval: error
no-inner-declarations: error
no-invalid-this: error
no-invalid-regexp: error
no-irregular-whitespace: error
no-iterator: error
no-label-var: error
no-labels: error
no-lone-blocks: error
no-lonely-if: error
no-loop-func: error
no-mixed-spaces-and-tabs: error
no-multi-spaces: error
no-multi-str: error
no-multiple-empty-lines:
- error
-
max: 2
no-native-reassign: error
no-negated-condition: error
no-nested-ternary: error
no-new: error
no-new-func: error
no-new-object: error
no-new-symbol: error
no-new-wrappers: error
no-obj-calls: error
no-octal: error
no-octal-escape: error
no-path-concat: error
no-plusplus: error
no-proto: error
no-redeclare: error
no-regex-spaces: error
no-restricted-globals: error
no-return-assign: error
no-script-url: error
no-self-assign: error
no-self-compare: error
no-sequences: error
no-shadow: error
no-shadow-restricted-names: error
no-spaced-func: error
no-sparse-arrays: error
no-this-before-super: error
no-throw-literal: error
no-trailing-spaces: error
no-undef: error
no-undef-init: error
no-unexpected-multiline: error
no-unmodified-loop-condition: error
no-unneeded-ternary: error
no-unreachable: error
no-unsafe-finally: error
no-unused-expressions: error
no-unused-labels: error
no-unused-vars: error
no-useless-call: error
no-useless-computed-key: error
no-useless-concat: error
no-useless-constructor: error
no-useless-escape: error
no-void: error
no-warning-comments: warn
no-whitespace-before-property: error
no-with: error
operator-assignment: error
padded-blocks:
- error
- never
prefer-const: error
quote-props:
- error
- as-needed
radix: error
require-yield: error
semi: error
semi-spacing: error
space-before-blocks: error
space-in-parens: error
space-infix-ops:
- error
-
int32Hint: false
space-unary-ops: error
spaced-comment: error
use-isnan: error
valid-typeof: error
yield-star-spacing: error

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@ -0,0 +1,13 @@
name: CI
on: [push]
jobs:
test:
name: Test
runs-on: ubuntu-latest
steps:
- name: Check out code
uses: actions/checkout@v1
- name: Run tests
run: ./run-tests
- name: Run against spec
run: ./run-spec

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@ -0,0 +1,45 @@
name: docker push
on: [push]
jobs:
push_to_registry:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@master
- name: Docker meta
if: startsWith(github.ref, 'refs/tags/')
id: docker_meta
uses: crazy-max/ghaction-docker-meta@v1
with:
images: ghcr.io/${{ github.repository }}
tag-match: v(.*)
- name: Set up QEMU
if: startsWith(github.ref, 'refs/tags/')
uses: docker/setup-qemu-action@v1
- name: Set up Docker Buildx
id: buildx
uses: docker/setup-buildx-action@v1
- name: Cache Docker layers
if: startsWith(github.ref, 'refs/tags/')
uses: actions/cache@v2
with:
path: /tmp/.buildx-cache
key: ${{ runner.os }}-buildx-${{ github.sha }}
restore-keys: |
${{ runner.os }}-buildx-
- name: Login to GitHub Container Registry
if: startsWith(github.ref, 'refs/tags/')
uses: docker/login-action@v1
with:
registry: ghcr.io
username: ${{ github.repository_owner }}
password: ${{ secrets.GITHUB_TOKEN }}
- name: Build and push
uses: docker/build-push-action@v2
if: startsWith(github.ref, 'refs/tags/')
with:
builder: ${{ steps.buildx.outputs.name }}
platforms: linux/amd64,linux/arm64
tags: ${{ steps.docker_meta.outputs.tags }}
cache-from: type=local,src=/tmp/.buildx-cache
cache-to: type=local,dest=/tmp/.buildx-cache
push: true

View File

@ -0,0 +1,9 @@
*.swp
diagnostic.partial
diagnostic.test
tests/*.diff
spec/
spec-runner/
node_modules/
package.json
package-lock.json

View File

@ -0,0 +1,616 @@
API / Function Documentation
============================
This documentation is generated automatically from the source of [mo] thanks to [tomdoc.sh].
`mo()`
------
Public: Template parser function. Writes templates to stdout.
* $0 - Name of the mo file, used for getting the help message.
* $@ - Filenames to parse.
Returns nothing.
`mo::debug()`
-------------
Internal: Show a debug message
* $1 - The debug message to show
Returns nothing.
`mo::debugShowState()`
----------------------
Internal: Show a debug message and internal state information
No arguments
Returns nothing.
`mo::error()`
-------------
Internal: Show an error message and exit
* $1 - The error message to show
* $2 - Error code
Returns nothing. Exits the program.
`mo::errorNear()`
-----------------
Internal: Show an error message with a snippet of context and exit
* $1 - The error message to show
* $2 - The starting point
* $3 - Error code
Returns nothing. Exits the program.
`mo::usage()`
-------------
Internal: Displays the usage for mo. Pulls this from the file that contained the `mo` function. Can only work when the right filename comes is the one argument, and that only happens when `mo` is called with `$0` set to this file.
* $1 - Filename that has the help message
Returns nothing.
`mo::content()`
---------------
Internal: Fetches the content to parse into MO_UNPARSED. Can be a list of partials for files or the content from stdin.
* $1 - Destination variable name
* $2-@ - File names (optional), read from stdin otherwise
Returns nothing.
`mo::contentFile()`
-------------------
Internal: Read a file into MO_UNPARSED.
* $1 - Destination variable name.
* $2 - Filename to load - if empty, defaults to /dev/stdin
Returns nothing.
`mo::indirect()`
----------------
Internal: Send a variable up to the parent of the caller of this function.
* $1 - Variable name
* $2 - Value
Examples
callFunc () {
local "$1" && mo::indirect "$1" "the value"
}
callFunc dest
echo "$dest" # writes "the value"
Returns nothing.
`mo::indirectArray()`
---------------------
Internal: Send an array as a variable up to caller of a function
* $1 - Variable name
* $2-@ - Array elements
Examples
callFunc () {
local myArray=(one two three)
local "$1" && mo::indirectArray "$1" "${myArray[@]}"
}
callFunc dest
echo "${dest[@]}" # writes "one two three"
Returns nothing.
`mo::trimUnparsed()`
--------------------
Internal: Trim leading characters from MO_UNPARSED
Returns nothing.
`mo::chomp()`
-------------
Internal: Remove whitespace and content after whitespace
* $1 - Name of the destination variable
* $2 - The string to chomp
Returns nothing.
`mo::parse()`
-------------
Public: Parses text, interpolates mustache tags. Utilizes the current value of MO_OPEN_DELIMITER, MO_CLOSE_DELIMITER, and MO_STANDALONE_CONTENT. Those three variables shouldn't be changed by user-defined functions.
* $1 - Destination variable name - where to store the finished content
* $2 - Content to parse
* $3 - Preserve standalone status/content - truthy if not empty. When set to a value, that becomes the standalone content value
Returns nothing.
`mo::parseInternal()`
---------------------
Internal: Parse MO_UNPARSED, writing content to MO_PARSED. Interpolates mustache tags.
No arguments
Returns nothing.
`mo::parseBlock()`
------------------
Internal: Handle parsing a block
* $1 - Invert condition ("true" or "false")
Returns nothing
`mo::parseBlockFunction()`
--------------------------
Internal: Handle parsing a block whose first argument is a function
* $1 - Invert condition ("true" or "false")
* $2-@ - The parsed tokens from inside the block tags
Returns nothing
`mo::parseBlockArray()`
-----------------------
Internal: Handle parsing a block whose first argument is an array
* $1 - Invert condition ("true" or "false")
* $2-@ - The parsed tokens from inside the block tags
Returns nothing
`mo::parseBlockValue()`
-----------------------
Internal: Handle parsing a block whose first argument is a value
* $1 - Invert condition ("true" or "false")
* $2-@ - The parsed tokens from inside the block tags
Returns nothing
`mo::parsePartial()`
--------------------
Internal: Handle parsing a partial
No arguments.
Indentation will be applied to the entire partial's contents before parsing. This indentation is based on the whitespace that ends the previously parsed content.
Returns nothing
`mo::parseComment()`
--------------------
Internal: Handle parsing a comment
No arguments.
Returns nothing
`mo::parseDelimiter()`
----------------------
Internal: Handle parsing the change of delimiters
No arguments.
Returns nothing
`mo::parseValue()`
------------------
Internal: Handle parsing value or function call
No arguments.
Returns nothing
`mo::isFunction()`
------------------
Internal: Determine if the given name is a defined function.
* $1 - Function name to check
Be extremely careful. Even if strict mode is enabled, it is not honored in newer versions of Bash. Any errors that crop up here will not be caught automatically.
Examples
moo () {
echo "This is a function"
}
if mo::isFunction moo; then
echo "moo is a defined function"
fi
Returns 0 if the name is a function, 1 otherwise.
`mo::isArray()`
---------------
Internal: Determine if a given environment variable exists and if it is an array.
* $1 - Name of environment variable
Be extremely careful. Even if strict mode is enabled, it is not honored in newer versions of Bash. Any errors that crop up here will not be caught automatically.
Examples
var=(abc)
if moIsArray var; then
echo "This is an array"
echo "Make sure you don't accidentally use \$var"
fi
Returns 0 if the name is not empty, 1 otherwise.
`mo::isArrayIndexValid()`
-------------------------
Internal: Determine if an array index exists.
* $1 - Variable name to check
* $2 - The index to check
Has to check if the variable is an array and if the index is valid for that type of array.
Returns true (0) if everything was ok, 1 if there's any condition that fails.
`mo::isVarSet()`
----------------
Internal: Determine if a variable is assigned, even if it is assigned an empty value.
* $1 - Variable name to check.
Can not use logic like this in case invalid variable names are passed. [[ "${!1-a}" == "${!1-b}" ]]
Returns true (0) if the variable is set, 1 if the variable is unset.
`mo::isTruthy()`
----------------
Internal: Determine if a value is considered truthy.
* $1 - The value to test
* $2 - Invert the value, either "true" or "false"
Returns true (0) if truthy, 1 otherwise.
`mo::evaluate()`
----------------
Internal: Convert token list to values
* $1 - Destination variable name
* $2-@ - Tokens to convert
Sample call:
mo::evaluate dest NAME username VALUE abc123 PAREN 2
Returns nothing.
`mo::evaluateListOfSingles()`
-----------------------------
Internal: Convert an argument list to individual values.
* $1 - Destination variable name
* $2-@ - A list of argument types and argument name/value.
This assumes each value is separate from the rest. In contrast, mo::evaluate will pass all arguments to a function if the first value is a function.
Sample call:
mo::evaluateListOfSingles dest NAME username VALUE abc123
Returns nothing.
`mo::evaluateSingle()`
----------------------
Internal: Evaluate a single argument
* $1 - Name of variable for result
* $2 - Type of argument, either NAME or VALUE
* $3 - Argument
Returns nothing
`mo::evaluateKey()`
-------------------
Internal: Return the value for @key based on current's name
* $1 - Name of variable for result
Returns nothing
`mo::evaluateVariable()`
------------------------
Internal: Handle a variable name
* $1 - Destination variable name
* $2 - Variable name
Returns nothing.
`mo::findVariableName()`
------------------------
Internal: Find the name of a variable to use
* $1 - Destination variable name, receives an array
* $2 - Variable name from the template
The array contains the following values
* [0] - Variable name
* [1] - Array index, or empty string
Example variables a="a"
b="b"
c=("c.0" "c.1")
d=([b]="d.b" [d]="d.d")
Given these inputs (function input, current value), produce these outputs a c => a
a c.0 => a
b d => d.b
b d.d => d.b
a d => d.a
a d.d => d.a
c.0 d => c.0
d.b d => d.b
'' c => c
'' c.0 => c.0
Returns nothing.
`mo::join()`
------------
Internal: Join / implode an array
* $1 - Variable name to receive the joined content
* $2 - Joiner
* $3-@ - Elements to join
Returns nothing.
`mo::evaluateFunction()`
------------------------
Internal: Call a function.
* $1 - Variable for output
* $2 - Content to pass
* $3 - Function to call
* $4-@ - Additional arguments as list of type, value/name
Returns nothing.
`mo::standaloneCheck()`
-----------------------
Internal: Check if a tag appears to have only whitespace before it and after it on a line. There must be a new line before and there must be a newline after or the end of a string
No arguments.
Returns 0 if this is a standalone tag, 1 otherwise.
`mo::standaloneProcess()`
-------------------------
Internal: Process content before and after a tag. Remove prior whitespace up to the previous newline. Remove following whitespace up to and including the next newline.
No arguments.
Returns nothing.
`mo::indentLines()`
-------------------
Internal: Apply indentation before any line that has content in MO_UNPARSED.
* $1 - Destination variable name.
* $2 - The indentation string.
* $3 - The content that needs the indentation string prepended on each line.
Returns nothing.
`mo::escape()`
--------------
Internal: Escape a value
* $1 - Destination variable name
* $2 - Value to escape
Returns nothing
`mo::getContentUntilClose()`
----------------------------
Internal: Get the content up to the end of the block by minimally parsing and balancing blocks. Returns the content before the end tag to the caller and removes the content + the end tag from MO_UNPARSED. This can change the delimiters, adjusting MO_OPEN_DELIMITER and MO_CLOSE_DELIMITER.
* $1 - Destination variable name
* $2 - Token string to match for a closing tag
Returns nothing.
`mo::tokensToString()`
----------------------
Internal: Convert a list of tokens to a string
* $1 - Destination variable for the string
* $2-$@ - Token list
Returns nothing.
`mo::getContentTrim()`
----------------------
Internal: Trims content from MO_UNPARSED, returns trimmed content.
* $1 - Destination variable
Returns nothing.
`mo::getContentComment()`
-------------------------
Get the content up to and including a close tag
* $1 - Destination variable
Returns nothing.
`mo::getContentDelimiter()`
---------------------------
Get the content up to and including a close tag. First two non-whitespace tokens become the new open and close tag.
* $1 - Destination variable
Returns nothing.
`mo::getContentWithinTag()`
---------------------------
Get the content up to and including a close tag. First two non-whitespace tokens become the new open and close tag.
* $1 - Destination variable, an array
* $2 - Terminator string
The array contents: [0] The raw content within the tag
[1] The parsed tokens as a single string
Returns nothing.
`mo::tokenizeTagContents()`
---------------------------
Internal: Parse MO_UNPARSED and retrieve the content within the tag delimiters. Converts everything into an array of string values.
* $1 - Destination variable for the array of contents.
* $2 - Stop processing when this content is found.
The list of tokens are in RPN form. The first item in the resulting array is the number of actual tokens (after combining command tokens) in the list.
Given: a 'bc' "de\"\n" (f {g 'h'}) Result: ([0]=4 [1]=NAME [2]=a [3]=VALUE [4]=bc [5]=VALUE [6]=$'de\"\n' [7]=NAME [8]=f [9]=NAME [10]=g [11]=VALUE [12]=h [13]=BRACE [14]=2 [15]=PAREN [16]=2
Returns nothing
`mo::tokenizeTagContentsName()`
-------------------------------
Internal: Get the contents of a variable name.
* $1 - Destination variable name for the token list (array of strings)
Returns nothing
`mo::tokenizeTagContentsDoubleQuote()`
--------------------------------------
Internal: Get the contents of a tag in double quotes. Parses the backslash sequences.
* $1 - Destination variable name for the token list (array of strings)
Returns nothing.
`mo::tokenizeTagContentsSingleQuote()`
--------------------------------------
Internal: Get the contents of a tag in single quotes. Only gets the raw value.
* $1 - Destination variable name for the token list (array of strings)
Returns nothing.
`MO_ORIGINAL_COMMAND`
---------------------
Save the original command's path for usage later
[mo]: ./mo
[tomdoc.sh]: https://github.com/tests-always-included/tomdoc.sh

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FROM alpine
RUN apk add --no-cache bash
ADD mo /usr/local/bin/mo
RUN chmod +x /usr/local/bin/mo
ENTRYPOINT /usr/local/bin/mo

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Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name(s) of the above copyright holders shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization.
The end-user documentation included with the redistribution, if any, must include the following acknowledgment: "This product includes software developed by contributors", in the same place and form as other third-party acknowledgments. Alternately, this acknowledgment may appear in the software itself, in the same form and location as other such third-party acknowledgments.

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Mo - Mustache Templates in Bash
===============================
[Mustache] templates are simple, logic-less templates. Because of their simplicity, they are able to be ported to many languages. The syntax is quite simple.
Hello, {{NAME}}.
I hope your {{TIME_PERIOD}} was fun.
The above file is [`demo/fun-trip.mo`](demo/fun-trip.mo). Let's try using this template some data from bash's environment. Go to your checked out copy of the project and run a command like this:
NAME=Tyler TIME_PERIOD=weekend ./mo demo/fun-trip.mo
Your result?
Hello, Tyler.
I hope your weekend was fun.
This bash version supports conditionals, functions (both as filters and as values), as well as indexed arrays (for iteration). You are able to leverage these additional features by adding more information into the environment. It is easiest to do this when you source `mo`. See the [demo scripts](demo/) for further examples.
Requirements
------------
* Bash 3.x (the aim is to make it work on Macs)
* The "coreutils" package (`basename` and `cat`)
* ... that's it. Why? Because bash **can**!
If you intend to develop this and run the official specs, you also need node.js.
Installation
------------
There are a few ways you can install this tool. How you install it depends on how you want to use it.
### Globally; For Everyone
You can install this file in `/usr/local/bin/` or `/usr/bin/` by simply downloading it, changing the permissions, then moving it to the right location. Double check that your system's PATH includes the destination folder, otherwise users may have a hard time starting the command.
# Download
curl -sSL https://raw.githubusercontent.com/tests-always-included/mo/master/mo -o mo
# Make executable
chmod +x mo
# Move to the right folder
sudo mv mo /usr/local/bin/
# Test
echo "works" | mo
### Locally; For Yourself
This is very similar to installing it globally but it does not require root privileges. It is very important that your PATH includes the destination folder otherwise it won't work. Some local folders that are typically used are `~/bin/` and `~/.local/bin/`.
# Download
curl -sSL https://raw.githubusercontent.com/tests-always-included/mo/master/mo -o mo
# Make executable
chmod +x mo
# Ensure destination folder exists
mkdir -p ~/.local/bin/
# Move to the right folder
mv mo ~/.local/bin/
# Test
echo "works" | mo
### As A Library; For A Tool
Bash scripts can source `mo` to include the functionality in their own routines. This usage typically would have `mo` saved to a `lib/` folder in an application and your other scripts would use `. lib/mo` to bring it into your project.
# Download
curl -sSL https://raw.githubusercontent.com/tests-always-included/mo/master/mo -o mo
# Move into your project folder
mv mo ~/projects/amazing-things/lib/
To allow it to work this way, you either should source the file (`. "lib/mo"`) or make it executable (`chmod +x lib/mo`) and run it from your scripts.
How to Use
----------
If you only plan using strings and numbers, nothing could be simpler. In your shell script you can choose to export the variables. The below script is [`demo/using-strings`](demo/using-strings).
#!/usr/bin/env bash
cd "$(dirname "$0")" # Go to the script's directory
export TEST="This is a test"
echo "Your message: {{TEST}}" | ../mo
The result? "Your message: This is a test".
Using arrays adds a slight level of complexity. *You must source `mo`.* Look at [`demo/using-arrays`](demo/using-arrays).
#!/usr/bin/env bash
cd "$(dirname "$0")" # Go to the script's directory
export ARRAY=( one two "three three three" four five )
. ../mo # This loads the "mo" function
cat << EOF | mo
Here are the items in the array:
{{#ARRAY}}
* {{.}}
{{/ARRAY}}
EOF
The result? You get a list of the five elements in the array. It is vital that you source `mo` and run the function when you want arrays to work because you can not execute a command and have arrays passed to that command's environment. Instead, we first source the file to load the function and then run the function directly.
There are more scripts available in the [demos directory](demo/) that could help illustrate how you would use this program.
There are additional features that the program supports. Try using `mo --help` to see what is available.
Please note that this command is written in Bash and pulls data from either the environment or (when using `--source`) from a text file that will be sourced and loaded into the environment, which means you will need to have Bash-style variables defined. Please see the examples in `demo/` for different ways you can use `mo`.
Enhancements
------------
In addition to many of the features built-in to Mustache, `mo` includes a number of unique features that make it a bit more powerful.
### Loop @key
`mo` implements Handlebar's `@key` references for outputting the key inside of a loop:
Env:
```bash
myarr=( foo bar )
# Bash v4+
declare -A myassoc
myassoc[hello]="mo"
myassoc[world]="is great"
```
Template:
```handlebars
{{#myarr}}
- {{@key}} {{.}}
{{/myarr}}
{{#myassoc}}
* {{@key}} {{.}}
{{/myassoc}}
```
Output:
```markdown
- 0 foo
- 1 bar
* hello mo
* world is great
```
### Helpers / Function Arguments
Function Arguments are not a part of the official Mustache implementation, and are more often associated with Handlebar's Helper functionality.
`mo` allows for passing strings to functions.
```handlebars
{{myfunc foo bar}}
```
For security reasons, these arguments are not immediately available to function calls without a flag.
#### with `--allow-function-arguments`
```bash
myfunc() {
# Outputs "foo, bar"
echo "$1, $2";
}
```
#### Using `$MO_FUNCTION_ARGS`
```bash
myfunc() {
# Outputs "foo, bar"
echo "${MO_FUNCTION_ARGS[0]}, ${MO_FUNCTION_ARGS[1]}";
}
```
### Triple Mustache, Parenthesis, and Quotes
Normally, triple mustache syntax, such as `{{{var}}}` will avoid HTML escaping of the variable. Because HTML escaping is not supported in `mo`, this is now used differently. Anything within braces will be looked up and the values will be concatenated together and the result will be treated as a value. Anything in parenthesis will be looked up, concatenated, and treated as a name. Also, anything in single quotes is passed as a value; double quoted things first are unescaped and then passed as a value.
```
# Example input
var=abc
user=admin
admin=Administrator
u=user
abc=([0]=zero [1]=one [2]=two)
```
| Mustache syntax | Resulting output | Notes |
|-----------------|------------------|-------|
| `{{var}}` | `abc` | Normal behavior |
| `{{var us}}` | `abcus` | Concatenation |
| `{{'var'}}` | `var` | Passing as a value |
| `{{"a\tb"}}` | `a b` | There was an escaped tab in the value |
| `{{u}}` | `user` | Normal behavior |
| `{{{u}}}` | `user` | Look up "$u", treat as the value `{{'user'}}` |
| `{{(u)}}` | `admin` | Look up "$u", treat as the name `{{user}}` |
| `{{var user}}` | `abcuser` | Concatenation |
| `{{(var '.1')}}` | `one` | Look up "$var", treat as "abc", then concatenate ".1" and look up `{{abc.1}}` |
In double-quoted strings, the following escape sequences are defined.
* `\"` - Quote
* `\b` - Bell
* `\e` - Escape (note that Bash typically uses $'\E' for the same thing)
* `\f` - Form feed
* `\n` - Newline
* `\r` - Carriage return
* `\t` - Tab
* `\v` - Vertical tab
* Anything else will skip the `\` and place the next character. However, this implementation is allowed to change in the future if a different escape character mapping becomes commonplace.
Environment Variables and Functions
-----------------------------------
There are several functions and variables used to process templates. `mo` reserves variables that start with `MO_` for variables exposing data or configuration, functions starting with `mo::`, and local variables starting with `mo[A-Z]`. You are welcome to use internal functions, though only ones that are marked as "Public" should not change their interface. Scripts may also read any of the variables.
Functions are all executed in a subshell, with another subshell for lambdas. Thus, your lambda can't affect the parsing of a template. There's more information about lambdas when talking about tests that fail.
* `MO_ALLOW_FUNCTION_ARGUMENTS` - When set to a non-empty value, this allows functions referenced in templates to receive additional options and arguments.
* `MO_CLOSE_DELIMITER` - The string used when closing a tag. Defaults to "}}". Used internally.
* `MO_CLOSE_DELIMITER_DEFAULT` - The default value of `MO_CLOSE_DELIMITER`. Used when resetting the close delimiter, such as when parsing a partial.
* `MO_CURRENT` - Variable name to use for ".".
* `MO_DEBUG` - When set to a non-empty value, additional debug information is written to stderr.
* `MO_FUNCTION_ARGS` - Arguments passed to the function.
* `MO_FAIL_ON_FILE` - If a filename from the command-line is missing or a partial does not exist, abort with an error.
* `MO_FAIL_ON_FUNCTION` - If a function returns a non-zero status code, abort with an error.
* `MO_FAIL_ON_UNSET` - When set to a non-empty value, expansion of an unset env variable will be aborted with an error.
* `MO_FALSE_IS_EMPTY` - When set to a non-empty value, the string "false" will be treated as an empty value for the purposes of conditionals.
* `MO_OPEN_DELIMITER` - The string used when opening a tag. Defaults to "{{". Used internally.
* `MO_OPEN_DELIMITER_DEFAULT` - The default value of MO_OPEN_DELIMITER. Used when resetting the open delimiter, such as when parsing a partial.
* `MO_ORIGINAL_COMMAND` - Used to find the `mo` program in order to generate a help message.
* `MO_PARSED` - Content that has made it through the template engine.
* `MO_STANDALONE_CONTENT` - The unparsed content that preceeded the current tag. When a standalone tag is encountered, this is checked to see if it only contains whitespace. If this and the whitespace condition after a tag is met, then this will be reset to $'\n'.
* `MO_UNPARSED` - Template content yet to make it through the parser.
Concessions
-----------
I admit that implementing everything in bash just doesn't make a lot of sense. For example, the following things just don't work because they don't really mesh with the "bash way".
Pull requests to solve the following issues would be helpful.
### Mustache Syntax
* Dotted names are supported but only for associative arrays (Bash 4). See [`demo/associative-arrays`](demo/associative-arrays) for an example.
* There's no "top level" object, so `echo '{{.}}' | ./mo` does not do anything useful. In other languages you can say the data for the template is a string and in `mo` the data is always the environment. Luckily this type of usage is rare and `{{.}}` works great when iterating over an array.
* [Parents](https://mustache.github.io/mustache.5.html#Parents), where a template can override chunks of a partial, are not supported.
* HTML encoding is not built into `mo`. `{{{var}}}`, `{{&var}}` and `{{var}}` all do the same thing. `echo '{{TEST}}' | TEST='<b>' mo` will give you "`<b>`" instead of "`&gt;b&lt;`".
### General Scripting Issues
* Using binary files as templates is simply not allowed.
* Bash does not support anything more complex than strings/numbers inside of associative arrays. I'm not able to add objects nor nested arrays to bash - it's just a shell after all!
* You must make sure the data is in the environment when `mo` runs. The easiest way to do that is to source `mo` in your shell script after setting up lots of other environment variables / functions.
Developing
----------
Check out the code and hack away. Please add tests to show off bugs before fixing them. New functionality should also be covered by a test.
First, make sure you install Node.js. After that, run `npm run install-tests` to get the dependencies and the repository of YAML tests. Run `npm run test` to run the JavaScript tests. There's over 100 of them, which is great. Not all of them will pass, but that's discussed later.
When submitting patches, make sure to run them past [ShellCheck] and ensure no problems are found. Also please use Bash 3 syntax if you are manipulating arrays.
### Porting and Backporting
In case of problems, setting MO_DEBUG to a non-empty value will give you LOTS of output.
MO_DEBUG=1 ./mo my-template
### Failed Specs
It is acceptable for some of the official spec tests to fail. The spec runner has specific exclusions and overrides to test similar functionality that avoid the following issues.
* Using `{{.}}` outside of a loop - In order to access any variable, you must use its name. In a loop, `{{.}}` will refer to the current value, but outside the loop you are unable to use this dot notation because there is no current value.
* Deeply nested data - Bash doesn't support complex data structure. Basically, just strings and arrays of strings.
* Interpolation; Multiple Calls: This fails because lambdas execute in a subshell so their output can be captured. If you want state to be preserved, you will need to write it outside of the current environment and load it again later.
* HTML Escaping - Since bash is not often executed in a web server context, it makes no sense to have the output escaped as HTML. Performing shell escaping of variables may be an option in the future if there's a demand.
* Lambdas - Function results are *not* automatically interpreted again. If you want to parse the results as Mustache content, use `mo::parse`. When they use `mo::parse`, it will use the current delimiters.
For lambdas, these examples may help.
```bash
# Retrieve content into a variable.
content=$(cat)
# Retrieve all content and do not trim newlines at the end.
content=$(cat; echo -n '.')
content=${content%.}
# Parse content using the current delimiters
mo::parse results "This is my content. Hello, {{username}}"
echo -n "$results"
# Parse content using the default delimiters
MO_OPEN_DELIMITER=$MO_OPEN_DELIMITER_DEFAULT
MO_CLOSE_DELIMITER=$MO_CLOSE_DELIMITER_DEFAULT
mo::parse results "This is my content. Hello, {{username}}"
echo -n "$results"
```
### Future Enhancements
There's a few places in the code marked with `TODO` to signify areas that could use improvement. Care to help? Keep in mind that this uses bash exclusively, so it might not look the prettiest.
License
-------
This program is licensed under an MIT license with an additional non-advertising clause. See [LICENSE.md](LICENSE.md) for the full text.
[Mustache]: https://mustache.github.io/
[ShellCheck]: https://github.com/koalaman/shellcheck

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#!/usr/bin/env bash
cd "$(dirname "$0")" # Go to the script's directory
declare -A DATA
export DATA=([one]=111 [two]=222)
. ../mo
cat <<EOF | mo
Accessing data directly:
DATA: {{DATA}}
One: {{DATA.one}}
Two: {{DATA.two}}
Things in DATA:
{{#DATA}}
Item: {{.}}
{{/DATA}}
EOF

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#!/usr/bin/env bash
#
# This embeds a template in the script without using strange `cat` syntax.
# shellcheck disable=SC1083 disable=SC1010 disable=SC1054 disable=SC1073 disable=SC1072 disable=SC1056 disable=SC1009
cd "$(dirname "$0")" # Go to the script's directory
export NAME="Tyler"
export VEHICLE="Ford Explorer"
export OVERDUE_LENGTH="2 months"
export OPTIONS=(
"Call a service representative at 1-800-000-0000 to discuss payment options"
"Return the vehicle immediately and pay a fine of 1 million dollars"
)
. ../mo
sed '0,/^# END/ d' "$(basename "$0")" | mo
exit
# END
Attention {{NAME}},
You need to pay for the {{VEHICLE}} you are leasing from us.
It has been {{OVERDUE_LENGTH}} since your last payment.
At this point you must do one of the following:
{{#OPTIONS}}
* {{.}}
{{/OPTIONS}}

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Hello, {{NAME}}
I hope your {{TIME_PERIOD}} was fun.

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#!/usr/bin/env bash
#
# This sources a simple script with the env. variables needed for the template.
cd "$(dirname "$0")" # Go to the script's directory
source ../mo
export NAME="Alex"
export ARRAY=( AAA BBB CCC )
# Include an external template
INCLUDE() {
# shellcheck disable=SC2031
cat "${MO_FUNCTION_ARGS[0]}"
}
# Print section title
TITLE() {
echo "+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+"
# shellcheck disable=SC2031
echo "${MO_FUNCTION_ARGS[0]}"
echo "+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+"
}
cat <<EOF | mo -u
{{TITLE 'Part 1'}}
{{INCLUDE 'function-args-part1'}}
{{TITLE 'Part 2'}}
{{INCLUDE 'function-args-part2'}}
EOF

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Hello, my name is {{NAME}}.

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{{#ARRAY}}
* {{.}}
{{/ARRAY}}

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#!/usr/bin/env bash
cd "$(dirname "$0")" # Go to the script's directory
EVERY_REPO() {
# The block contents come in through standard input. Capture it here.
content=$(cat)
echo "# Starting EVERY_REPO"
# Get list of repos
for REPO in "${REPOS[@]}"; do
echo "## Looping one time for repo: $REPO"
# String replace REPO_ with the name
# This changes everything in the content block of the template.
# It rewrites {{__REPO__.name}} into {{resque.name}}, for instance.
# You can prefix your environment variables and do other things as well.
echo "$content" | sed "s/__REPO__/${REPO}/"
echo "## Looped one time for repo: $REPO"
done
echo "# Finished EVERY_REPO"
}
REPOS=(resque hub rip)
declare -A resque hub rip
resque=([name]=Resque [url]=http://example.com/resque)
hub=([name]=Hub [url]=http://example.com/hub)
rip=([name]=Rip [url]=http://example.com/rip)
. ../mo
cat <<EOF | mo
{{#EVERY_REPO}}
The repo is __REPO__
Name: {{__REPO__.name}}
URL: {{__REPO__.url}}
{{/EVERY_REPO}}
EOF

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#!/usr/bin/env bash
cd "$(dirname "$0")" # Go to the script's directory
# Detect if this is the first item and write a comma if it is.
# Normally, I would track this using a variable, like so:
#
# COMMA_IF_NOT_FIRST_FLAG=false
# COMMA_IF_NOT_FIRST() {
# $COMMA_IF_NOT_FIRST || echo ","
# COMMA_IF_NOT_FIRST_FLAG=true
# }
#
# Since this function executes in a subshell, that approach will not work.
# Instead, we peek inside mo and see what is being processed. If the variable
# name in moParse() changes, this will need to get updated as well. An
# alternate variable that is usable is context, but that is in moLoop() and is
# two levels levels deep instead of just one.
COMMA_IF_NOT_FIRST() {
[[ "${moCurrent#*.}" != "0" ]] && echo ","
}
# Create an array that will be embedded into the JSON. If you are manipulating
# JSON, might I suggest you look at using jq? It's really good at processing
# JSON.
items=(
'{"position":"one","url":"1"}'
'{"position":"two","url":"2"}'
'{"position":"three","url":"3"}'
)
. ../mo
cat <<EOF | mo
{
{{#items}}
{{COMMA_IF_NOT_FIRST}}
{{.}}
{{/items}}
}
EOF

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