Squashed 'vendor/git.knownelement.com/ExternalVendorCode/mo/' content from commit 7e86c1a

git-subtree-dir: vendor/git.knownelement.com/ExternalVendorCode/mo
git-subtree-split: 7e86c1a5f525f352983077d743c2ce2f5d75f4fa
This commit is contained in:
Charles N Wyble 2024-12-10 14:55:29 -06:00
commit a0db8e8df0
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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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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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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

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*.swp
diagnostic.partial
diagnostic.test
tests/*.diff
spec/
spec-runner/
node_modules/
package.json
package-lock.json

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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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#!/usr/bin/env bash
# Example for how #29 can get implemented.
cd "$(dirname "$0")" # Go to the script's directory
foreach() {
# Trying to use unique names
local foreachSourceName foreachIterator foreachEvalString foreachContent
foreachContent=$(cat)
local x
x=("${@}")
if [[ "$2" != "as" && "$2" != "in" ]]; then
echo "Invalid foreach - bad format."
elif [[ "$(declare -p "$1")" != "declare -"[aA]* ]]; then
echo "$1 is not an array"
else
foreachSourceName="${1}[@]"
for foreachIterator in "${!foreachSourceName}"; do
foreachEvalString=$(declare -p "$foreachIterator")
foreachEvalString="declare -A $3=${foreachEvalString#*=}"
eval "$foreachEvalString"
echo "$foreachContent" | mo
done
fi
}
# The links are associative arrays
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)
# This is a list of the link arrays
links=(resque hub rip)
# Source mo in order to work with arrays
. ../mo
# Process the template
cat <<EOF | mo --allow-function-arguments
Here are your links:
{{#foreach 'links' 'as' 'link'}}
* [{{link.name}}]({{link.url}})
{{/foreach 'links' 'as' 'link'}}
EOF

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#!/usr/bin/env bash
cd "$(dirname "$0")"/..
date-string() {
date
}
wrapper() {
echo -n "*** $(cat) ***"
}
export IP=127.0.0.1
export ALLOWED_HOSTS=( 192.168.0.1 192.168.0.2 192.168.0.3 )
. ./mo # Keep in mind this script is executing in the parent directory
cat <<EOF | mo
# {{#wrapper}}OH SO IMPORTANT{{/wrapper}}
# This file automatically generated at {{date-string}}
home_ip={{IP}}
# ALLOWED HOSTS
{{#ALLOWED_HOSTS}}allowed_host={{.}}
{{/ALLOWED_HOSTS}}{{^ALLOWED_HOSTS}}# No allowed hosts{{/ALLOWED_HOSTS}}
# DENIED HOSTS
{{#DENIED_HOSTS}}denied_host={{.}}
{{/DENIED_HOSTS}}{{^DENIED_HOSTS}}# No denied hosts{{/DENIED_HOSTS}}
EOF

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#!/usr/bin/env bash
export data=$'line 1\nline 2'
cat <<EOF | ../mo
Here is a partial without an indent:
{{> partial}}
And here's the same partial with a 4-space indent:
{{> partial}}
:-)
EOF

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@ -0,0 +1 @@
{{data}}

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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
cat <<EOF | ../mo --source=sourcing.vars
Hello, my name is {{NAME}}.
And this is ARRAY's conntents:
{{#ARRAY}}
* {{.}}
{{/ARRAY}}
EOF

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export NAME="Alex"
export ARRAY=( AAA BBB CCC )

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#!/usr/bin/env bash
cd "$(dirname "$0")" # Go to the script's directory
export ARRAY=( one two "three three three" four five )
. ../mo
cat << EOF | mo
Here are the items in the array:
{{#ARRAY}}
* {{.}}
{{/ARRAY}}
EOF

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#!/usr/bin/env bash
#
# This example does not source `mo` and is intentionally restricted to
# variables that are not arrays.
cd "$(dirname "$0")" # Go to the script's directory
export TEST="This is a test"
echo "Your message: {{TEST}}" | ../mo

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#!/usr/bin/env bash
cd "$(dirname "$0")" # Go to the script's directory
export OPEN="{{"
export CLOSE="}}"
cat <<'EOF' | mo
You can use environment variables to write output that has double braces.
{{OPEN}}sampleTag{{CLOSE}}
EOF

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#!/usr/bin/env bash
#
# This requires tomdoc.sh to be in your PATH.
# https://github.com/tests-always-included/tomdoc.sh
cd "${0%/*}" || exit 1
cat <<'EOF'
API / Function Documentation
============================
This documentation is generated automatically from the source of [mo] thanks to [tomdoc.sh].
EOF
sed 's/# shellcheck.*//' mo | tomdoc.sh -m
cat <<'EOF'
[mo]: ./mo
[tomdoc.sh]: https://github.com/tests-always-included/tomdoc.sh
EOF

1997
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#!/usr/bin/env bash
# Install or update the specs
if [[ ! -d spec ]]; then
git clone https://github.com/mustache/spec.git spec
else
(
cd spec
git pull
)
fi
if [[ "$BASH_VERSION" == 3.* ]]; then
echo "WARNING! Specs assume you are using a version of Bash with associative arrays!"
fi
# Actually run the specs
node run-spec.js spec/specs/*.json
if [[ "$BASH_VERSION" == 3.* ]]; then
echo "Some tests may have failed because they assume Bash supports associative arays"
fi

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#!/usr/bin/env node
const exec = require("child_process").exec;
const fsPromises = require("fs").promises;
// Skip or override portions of tests. The goal is to still have as much
// coverage as possible, but skip things that Bash does not support.
//
// To skip a test, define a "skip" property and explain why the test is
// skipped.
//
// To override any test property, just define that property. It replaces the
// original property, not augmenting it.
const testOverrides = {
"Comments -> Variable Name Collision": {
// Can't use variables with exclamation points easily
data: {
comment: 4
}
},
"Interpolation -> Dotted Names - Arbitrary Depth": {
skip: "Not able to use more than one level of depth"
},
"Interpolation -> Dotted Names - Broken Chain Resolution": {
data: {
a: {
b: "wrong"
},
name: "Jim"
},
template: '"{{a.name}}" == ""'
},
"Interpolation -> Dotted Names - Initial Resolution": {
data: {
a: {
name: "Phil"
},
name: "Wrong"
},
template: "\"{{#a}}{{name}}{{/a}}\" == \"Phil\""
},
"Interpolation -> Implicit Iterators - Ampersand": {
skip: "HTML escaping is not supported"
},
"Interpolation -> Implicit Iterators - Basic Interpolation": {
skip: "Can not use {{.}} outside of a loop. Need to use a variable name."
},
"Interpolation -> Implicit Iterators - Basic Integer Interpolation": {
skip: "Can not use {{.}} outside of a loop. Need to use a variable name."
},
"Interpolation -> Implicit Iterators - Triple Mustache": {
skip: "Can not use {{.}} outside of a loop. Need to use a variable name."
},
"Interpolation -> HTML Escaping": {
skip: "HTML escaping is not supported"
},
"Interpolation -> Implicit Iterators - HTML Escaping": {
skip: "HTML escaping is not supported"
},
"Inverted -> Dotted Names - Falsey": {
data: {
a: {
b: ""
}
},
template: '"{{^a.b}}Not Here{{/a.b}}" == "Not Here"'
},
"Inverted -> Dotted Names - Truthy": {
data: {
a: {
b: "1"
}
},
template: '"{{^a.b}}Not Here{{/a.b}}" == ""'
},
"Lambdas -> Escaping": {
skip: "HTML escaping is not supported"
},
"Lambdas -> Interpolation - Alternate Delimiters": {
skip: "There is no difference between a lamba used as a value and a lambda used as a block. Both will parse using the current delimiters."
},
"Lambdas -> Inverted Section": {
// This one passed mostly by accident. Correcting so the test still
// tests what is was designed to illustrate.
data: {
static: "static",
lambda: {
__tag__: 'code',
bash: 'false'
}
}
},
"Lambdas -> Interpolation": {
data: {
lambda: {
__tag__: 'code',
bash: 'echo -n "world"'
}
}
},
"Lambdas -> Interpolation - Expansion": {
data: {
lambda: {
__tag__: 'code',
bash: 'mo::parse result "{{planet}}"; echo -n "$result"'
},
planet: 'world'
}
},
"Lambdas -> Interpolation - Multiple Calls": {
skip: "Calls are not cached, but they run in isolated environments, so saving a global variable does not work."
},
"Lambdas -> Section": {
data: {
lambda: {
__tag__: 'code',
bash: 'if [[ "$(cat)" == "{{x}}" ]]; then echo -n yes; else echo -n no; fi'
},
x: "Error!"
}
},
"Lambdas -> Section - Alternate Delimiters": {
data: {
lambda: {
__tag__: 'code',
bash: 'local content=$(cat); mo::parse content "$content{{planet}} => |planet|$content"; echo -n "$content"'
},
planet: 'Earth'
}
},
"Lambdas -> Section - Expansion": {
data: {
lambda: {
__tag__: 'code',
bash: 'local content=$(cat); mo::parse content "$content{{planet}}$content"; echo -n "$content"'
},
planet: "Earth"
}
},
"Lambdas -> Section - Multiple Calls": {
data: {
lambda: {
__tag__: 'code',
bash: 'echo -n "__$(cat)__"'
}
}
},
"Partials -> Recursion": {
skip: "Complex objects are not supported and context is reset to the global level, so the recursion will loop forever"
},
"Sections -> Deeply Nested Contexts": {
skip: "Nested objects are not supported"
},
"Sections -> Dotted Names - Broken Chains": {
// Complex objects are not supported
template: `"{{#a.b}}Here{{/a.b}}" == ""`
},
"Sections -> Dotted Names - Falsey": {
// Complex objects are not supported
data: { a: { b: false } },
template: `"{{#a.b}}Here{{/a.b}}" == ""`
},
"Sections -> Dotted Names - Truthy": {
// Complex objects are not supported
data: { a: { b: true } },
template: `"{{#a.b}}Here{{/a.b}}" == "Here"`
},
"Sections -> Implicit Iterator - Array": {
skip: "Nested arrays are not supported"
},
"Sections -> List": {
// Arrays of objects are not supported
data: { list: [1, 2, 3] },
template: `"{{#list}}{{.}}{{/list}}"`
},
"Sections -> List Context": {
skip: "Deeply nested objects are not supported"
},
"Sections -> List Contexts": {
skip: "Deeply nested objects are not supported"
}
};
function specFileToName(file) {
return file
.replace(/.*\//, "")
.replace(".json", "")
.replace("~", "")
.replace(/(^|-)[a-z]/g, function (match) {
return match.toUpperCase();
});
}
function processArraySequentially(array, callback) {
function processCopy() {
if (arrayCopy.length) {
const item = arrayCopy.shift();
return Promise.resolve(item)
.then(callback)
.then((singleResult) => {
result.push(singleResult);
return processCopy();
});
} else {
return Promise.resolve(result);
}
}
const result = [];
const arrayCopy = array.slice();
return processCopy();
}
function debug(...args) {
if (process.env.DEBUG) {
console.debug(...args);
}
}
function makeShellString(value) {
if (typeof value === "boolean") {
return value ? '"true"' : '""';
}
if (typeof value === "string") {
// Newlines are tricky
return value
.split(/\n/)
.map(function (chunk) {
return JSON.stringify(chunk);
})
.join('"\n"');
}
if (typeof value === "number") {
return value;
}
return "ERR_CONVERTING";
}
function addToEnvironmentArray(name, value) {
const result = ["("];
value.forEach(function (subValue) {
result.push(makeShellString(subValue));
});
result.push(")");
return name + "=" + result.join(" ");
}
function addToEnvironmentObjectConvertedToAssociativeArray(name, value) {
const values = [];
for (const [k, v] of Object.entries(value)) {
if (typeof v === "object") {
if (v) {
// An object - abort
return `# ${name}.${k} is an object that can not be converted to an associative array`;
}
// null
values.push(`[${k}]=`);
} else {
values.push(`[${k}]=${makeShellString(v)}`);
}
}
return `declare -A ${name}\n${name}=(${values.join(" ")})`;
}
function addToEnvironmentObject(name, value) {
if (!value) {
// null
return `#${name} is null`;
}
if (value.__tag__ === "code") {
return `${name}() { ${value.bash || 'echo "NO BASH VERSION OF CODE"'}; }`;
}
return addToEnvironmentObjectConvertedToAssociativeArray(name, value);
}
function addToEnvironment(name, value) {
if (Array.isArray(value)) {
return addToEnvironmentArray(name, value);
}
if (typeof value === "object") {
return addToEnvironmentObject(name, value);
}
return `${name}=${makeShellString(value)}`;
}
function buildScript(test) {
const script = ["#!/usr/bin/env bash"];
Object.keys(test.data).forEach(function (name) {
script.push(addToEnvironment(name, test.data[name]));
});
script.push(". ./mo");
script.push("mo spec-runner/spec-template");
script.push("");
return script.join("\n");
}
function writePartials(test) {
return processArraySequentially(
Object.keys(test.partials),
(partialName) => {
debug("Writing partial:", partialName);
return fsPromises.writeFile(
"spec-runner/" + partialName,
test.partials[partialName]
);
}
);
}
function setupEnvironment(test) {
return cleanup()
.then(() => fsPromises.mkdir("spec-runner/"))
.then(() =>
fsPromises.writeFile("spec-runner/spec-script", test.script)
)
.then(() =>
fsPromises.writeFile("spec-runner/spec-template", test.template)
)
.then(() => writePartials(test));
}
function executeScript(test) {
return new Promise((resolve) => {
exec(
"bash spec-runner/spec-script 2>&1",
{
timeout: 2000
},
(err, stdout) => {
if (err) {
test.scriptError = err.toString();
}
test.output = stdout;
resolve();
}
);
});
}
function cleanup() {
return fsPromises.rm("spec-runner/", { force: true, recursive: true });
}
function detectFailure(test) {
if (test.scriptError) {
return true;
}
if (test.output !== test.expected) {
return true;
}
return false;
}
function showFailureDetails(test) {
console.log(`FAILURE: ${test.fullName}`);
console.log("");
console.log(test.desc);
console.log("");
console.log(JSON.stringify(test, null, 4));
}
function applyTestOverrides(test) {
const overrides = testOverrides[test.fullName];
const originals = {};
if (!overrides) {
return;
}
for (const [key, value] of Object.entries(overrides)) {
originals[key] = test[key];
test[key] = value;
}
test.overridesApplied = true;
test.valuesBeforeOverride = originals;
}
function runTest(testSet, test) {
test.partials = test.partials || {};
test.fullName = `${testSet.name} -> ${test.name}`;
applyTestOverrides(test);
test.script = buildScript(test);
if (test.skip) {
debug("Skipping test:", test.fullName, `(${test.skip})`);
return Promise.resolve();
}
debug("Running test:", test.fullName);
return setupEnvironment(test)
.then(() => executeScript(test))
.then(cleanup)
.then(() => {
test.isFailure = detectFailure(test);
if (test.isFailure) {
showFailureDetails(test);
} else {
debug('Test pass:', test.fullName);
}
});
}
function processSpecFile(filename) {
debug("Read spec file:", filename);
return fsPromises.readFile(filename, "utf8").then((fileContents) => {
const testSet = JSON.parse(fileContents);
testSet.name = specFileToName(filename);
return processArraySequentially(testSet.tests, (test) =>
runTest(testSet, test)
).then(() => {
testSet.pass = 0;
testSet.fail = 0;
testSet.skip = 0;
testSet.passOverride = 0;
for (const test of testSet.tests) {
if (test.isFailure) {
testSet.fail += 1;
} else if (test.skip) {
testSet.skip += 1;
} else {
testSet.pass += 1;
if (test.overridesApplied) {
testSet.passOverride += 1;
}
}
}
console.log(
`### ${testSet.name} Results = ${testSet.pass} passed (with ${testSet.passOverride} overridden), ${testSet.fail} failed, ${testSet.skip} skipped`
);
return testSet;
});
});
}
// 0 = node, 1 = script, 2 = file
if (process.argv.length < 3) {
console.log("Specify one or more JSON spec files on the command line");
process.exit();
}
processArraySequentially(process.argv.slice(2), processSpecFile).then(
(result) => {
console.log("=========================================");
console.log("");
console.log("Failed Test Summary");
console.log("");
let pass = 0,
fail = 0,
skip = 0,
total = 0,
passOverride = 0;
for (const testSet of result) {
pass += testSet.pass;
fail += testSet.fail;
skip += testSet.skip;
total += testSet.tests.length;
passOverride += testSet.passOverride;
console.log(
`* ${testSet.name}: ${testSet.tests.length} total, ${testSet.pass} pass (with ${passOverride} overridden), ${testSet.fail} fail, ${testSet.skip} skip`
);
for (const test of testSet.tests) {
if (test.isFailure) {
console.log(` * Failure: ${test.name}`);
}
}
}
console.log("");
console.log(
`Final result: ${total} total, ${pass} pass (with ${passOverride} overridden), ${fail} fail, ${skip} skip`
);
if (fail) {
process.exit(1);
}
},
(err) => {
console.error(err);
console.error("FAILURE RUNNING SCRIPT");
console.error("Testing artifacts are left in script-runner/ folder");
}
);

162
run-tests Executable file
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#!/usr/bin/env bash
#
# Run one or more tests.
#
# Command-line usage to run all tests.
#
# ./run-tests
#
# To run only one test, run "tests/test-name".
#
# Usage within a test as a template. Source run-tests to get functions, export
# any necessary variables, then call runTest.
#
# #!/usr/bin/env bash
# cd "${0%/*}" || exit 1
# . ../run-tests
#
# export template="This is a template"
# export expected="This is a template"
# runTest
#
# When used within the test, you control various aspects with environment
# variables or functions.
#
# - The content passed into mo is either the variable "$template" or the output
# of the function called template.
# - The expected result is either "$expected" or the function called expected.
# - The expected return code is "$returnCode" and defaults to 0.
# - The arguments to pass to mo is the array "${arguments[@]}" and defaults to ().
#
# When $MO_DEBUG is set to a non-empty value, the test does not run, but mo is
# simply executed directly. This allows for calling mo in the same manner as
# the test but does not buffer output nor expect the output to match the
# expected.
#
# When $MO_DEBUG_TEST is set to a non-empty value, the expected and actual
# results are shown using "declare -p" to provide an easier time seeing the
# differences, especially with whitespace.
testCase() {
echo "Input: $1"
echo "Expected: $2"
}
indirect() {
unset -v "$1"
printf -v "$1" '%s' "$2"
}
getValue() {
local name temp len hardSpace
name=$2
hardSpace=" "
if declare -f "$name" &> /dev/null; then
temp=$("$name"; echo -n "$hardSpace")
len=$((${#temp} - 1))
if [[ "${temp:$len}" == "$hardSpace" ]]; then
temp=${temp:0:$len}
fi
else
temp=${!name}
fi
local "$1" && indirect "$1" "$temp"
}
runTest() (
local testTemplate testExpected testActual hardSpace len testReturnCode testFail
hardSpace=" "
. ../mo
getValue testTemplate template
getValue testExpected expected
if [[ -n "${MO_DEBUG:-}" ]]; then
echo -n "$testTemplate" | mo ${arguments[@]+"${arguments[@]}"} 2>&1
return $?
fi
testActual=$(echo -n "$testTemplate" | mo ${arguments[@]+"${arguments[@]}"} 2>&1; echo -n "$hardSpace$?")
testReturnCode=${testActual##*$hardSpace}
testActual=${testActual%$hardSpace*}
testFail=false
if [[ "$testActual" != "$testExpected" ]]; then
echo "Failure"
echo "Expected:"
echo "$testExpected"
echo "Actual:"
echo "$testActual"
if [[ -n "${MO_DEBUG_TEST-}" ]]; then
declare -p testExpected
# Align the two declare outputs
echo -n " "
declare -p testActual
fi
testFail=true
fi
if [[ "$testReturnCode" != "$returnCode" ]]; then
echo "Expected return code $returnCode, but got $testReturnCode"
testFail=true
fi
if [[ "$testFail" == "true" ]]; then
return 1
fi
return 0
)
runTestFile() (
local file=$1
echo "Test: $file"
"$file"
)
runTests() (
PASS=0
FAIL=0
if [[ $# -gt 0 ]]; then
for TEST in "$@"; do
runTestFile "$TEST" && PASS=$((PASS + 1)) || FAIL=$((FAIL + 1))
done
else
cd "${0%/*}"
for TEST in tests/*; do
if [[ -f "$TEST" ]]; then
runTestFile "$TEST" && PASS=$((PASS + 1)) || FAIL=$((FAIL + 1))
fi
done
fi
echo ""
echo "Pass: $PASS"
echo "Fail: $FAIL"
if [[ $FAIL -gt 0 ]]; then
exit 1
fi
)
# Clear test related variables
template="Template not defined"
expected="Expected not defined"
returnCode=0
arguments=()
# If sourced, load functions.
# If executed, perform the actions as expected.
if [[ "$0" == "${BASH_SOURCE[0]}" ]] || [[ -z "${BASH_SOURCE[0]}" ]]; then
runTests ${@+"${@}"}
fi

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tests/ampersand Executable file
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#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export thing="Works"
export template="{{&thing}}"
export expected="Works"
runTest

21
tests/array Executable file
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#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export repo=( "resque" "hub" "rip" )
template() {
cat <<EOF
{{#repo}}
<b>{{@key}} - {{.}}</b>
{{/repo}}
EOF
}
expected() {
cat <<EOF
<b>0 - resque</b>
<b>1 - hub</b>
<b>2 - rip</b>
EOF
}
runTest

25
tests/assoc-array Executable file
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#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
declare -A repo
# The order of the array elements can be shuffled depending on the version of
# Bash. Keeping this to a minimal set and alphabetized seems to help.
repo[hub]="Hub"
repo[rip]="Rip"
export repo
template() {
cat <<EOF
{{#repo}}
<b>{{@key}} - {{.}}</b>
{{/repo}}
EOF
}
expected() {
cat <<EOF
<b>hub - Hub</b>
<b>rip - Rip</b>
EOF
}
runTest

8
tests/comment Executable file
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#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export template="Wor{{!comment}}ks"
export expected="Works"
runTest

15
tests/comment-newline Executable file
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#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
template() {
cat <<EOF
<h1>Today{{! ignore me
and this can
run through multiple
lines}}.</h1>
EOF
}
export expected=$'<h1>Today.</h1>\n'
runTest

8
tests/comment-with-spaces Executable file
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@ -0,0 +1,8 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export template="Wor{{! comment }}ks"
export expected="Works"
runTest

10
tests/concatenated-variables Executable file
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#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export thing="Wor"
export thing2="ks"
export template="{{thing thing2}}"
export expected="Works"
runTest

9
tests/delimiters Executable file
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#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export thing="Works"
export template="{{=| |=}}|thing|"
export expected="Works"
runTest

10
tests/double-hyphen Executable file
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#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export arguments=(--fail-on-file -- --help)
export returnCode=1
export template=""
export expected=$'ERROR: No such file: --help\n'
runTest

8
tests/double-quote Executable file
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#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export template='{{"Works"}}'
export expected="Works"
runTest

20
tests/fail-not-set Executable file
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#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
unset __NO_SUCH_VAR
export POPULATED="words"
export EMPTY=""
export arguments=(--fail-not-set)
export returnCode=1
template() {
cat <<EOF
Populated: {{POPULATED}};
Empty: {{EMPTY}};
Unset: {{__NO_SUCH_VAR}};
EOF
}
export expected=$'ERROR: Environment variable not set: __NO_SUCH_VAR\n'
runTest

13
tests/fail-on-function Executable file
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#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
failFunction() {
false
}
export arguments=(--fail-on-function)
export returnCode=1
export template="Fail on function? {{failFunction}}"
export expected=$'ERROR: Function failed with status code 1: "failFunction"\n'
runTest

18
tests/false-is-empty-arg Executable file
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#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export USER=j.doe
export ADMIN=false
export arguments=(--false)
template() {
cat <<EOF
The user {{USER}} exists.
{{#ADMIN}}
WRONG - should not be an admin.
{{/ADMIN}}
EOF
}
export expected=$'The user j.doe exists.\n'
runTest

18
tests/false-is-empty-env Executable file
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#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export USER=j.doe
export ADMIN=false
MO_FALSE_IS_EMPTY=yeppers
template() {
cat <<EOF
The user {{USER}} exists.
{{#ADMIN}}
WRONG - should not be an admin.
{{/ADMIN}}
EOF
}
export expected=$'The user j.doe exists.\n'
runTest

16
tests/false-list Executable file
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#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export person=""
template() {
cat <<EOF
Shown.
{{#person}}
Never shown!
{{/person}}
EOF
}
export expected=$'Shown.\n'
runTest

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@ -0,0 +1,2 @@
first line
second line

2
tests/fixtures/inline-indentation vendored Normal file
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>
>

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@ -0,0 +1 @@
{{multilineData}}

1
tests/fixtures/partial.partial vendored Normal file
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@ -0,0 +1 @@
<strong>{{.}}</strong>

2
tests/fixtures/source-multiple-1.vars vendored Normal file
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@ -0,0 +1,2 @@
export A=from1
export B=from1

2
tests/fixtures/source-multiple-2.vars vendored Normal file
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@ -0,0 +1,2 @@
export B=from2
export C=from2

5
tests/fixtures/source.vars vendored Normal file
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@ -0,0 +1,5 @@
export VAR=value
export ARR=(1 2 3)
declare -A ASSOC_ARR
# Can not export associative arrays, otherwise they turn into indexed arrays
ASSOC_ARR=([a]=AAA [b]=BBB)

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|
{{content}}
|

25
tests/function Executable file
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#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export name=Willy
wrapped() {
# Wrapping 'cat' in a subshell eats the trailing whitespace
# The echo adds a newline, which is preserved.
echo "<b>$(cat)</b>"
}
template() {
cat <<EOF
{{#wrapped}}
{{name}} is awesome.
{{/wrapped}}
... this is the last line.
EOF
}
# We don't expect {{name}} to be changed. The function returns whatever content
# that should be the result. There is a separate test where the function handles
# parsing mustache tags.
export expected=$'<b> {{name}} is awesome.</b>\n... this is the last line.\n'
runTest

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#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export planet=Earth
lambda() {
local content
content=$(cat)
mo::parse content "$content{{planet}} => |planet|$content"
echo -n "$content"
}
export template="{{= | | =}}<|#lambda|-|/lambda|>"
export expected="<-{{planet}} => Earth->"
runTest

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tests/function-args Executable file
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#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export name=Willy
MO_ALLOW_FUNCTION_ARGUMENTS=true
pipeTo() {
cat | "$1"
}
testArgs() {
printf "%d" "$#"
# Display all arguments
printf " %q" ${@+"$@"}
}
template() {
cat <<EOF
No args: {{testArgs}} - done
One arg: {{testArgs 'one'}} - done
Getting name in a string: {{testArgs {"The name is " name}}} - done
Reverse this: {{#pipeTo "rev"}}abcde{{/pipeTo "rev"}}
EOF
}
expected() {
cat <<EOF
No args: 0 '' - done
One arg: 1 one - done
Getting name in a string: 1 The\ name\ is\ Willy - done
Reverse this: edcba
EOF
}
runTest

42
tests/function-args-read Executable file
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#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
testArgs() {
local args
# shellcheck disable=SC2031
args=$(declare -p MO_FUNCTION_ARGS)
# The output from declare -p could look like these
# declare -a MO_FUNCTION_ARGS=([0]="one")
# declare -ax MO_FUNCTION_ARGS='([0]="one")'
# Trim leading declare statement and variable name
args="${args#*=}"
# If there are any quotes, remove them. The function arguments will always
# be an array.
if [[ "${args:0:1}" == "'" ]]; then
args=${args#\'}
args=${args%\'}
fi
echo -n "$args"
}
template() {
cat <<EOF
No args: {{testArgs}} - done
One arg: {{testArgs 'one'}} - done
Multiple arguments: {{testArgs 'aa' 'bb' 'cc' 'x' "" '!' '{[_.|' }} - done
Evil: {{testArgs bla; cat /etc/issue}} - done
EOF
}
expected() {
cat <<EOF
No args: () - done
One arg: ([0]="one") - done
Multiple arguments: ([0]="aa" [1]="bb" [2]="cc" [3]="x" [4]="" [5]="!" [6]="{[_.|") - done
Evil: ([0]="" [1]="" [2]="") - done
EOF
}
runTest

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@ -0,0 +1,28 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export name=Willy
wrapped() {
local content
# Wrapping 'cat' in a subshell eats the trailing whitespace
content="<b>$(cat)</b>"
# Parse the content using mustache
mo::parse content "$content"
# The echo adds a newline, which is preserved.
echo "$content"
}
template() {
cat <<EOF
{{#wrapped}}
{{name}} is awesome.
{{/wrapped}}
... this is the last line.
EOF
}
export expected=$'<b> Willy is awesome.</b>\n... this is the last line.\n'
runTest

28
tests/globals-in-loop Executable file
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#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export STR=abc
export DATA=(111 222)
template() {
cat <<EOF
Issue #7
{{STR}}
{{#DATA}}
Item: {{.}}
String: {{STR}}
{{/DATA}}
EOF
}
expected() {
cat <<EOF
Issue #7
abc
Item: 111
String: abc
Item: 222
String: abc
EOF
}
runTest

101
tests/help Executable file
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#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export arguments=(--help)
expected() {
cat <<'EOF'
Mo is a mustache template rendering software written in bash. It inserts
environment variables into templates.
Simply put, mo will change {{VARIABLE}} into the value of that
environment variable. You can use {{#VARIABLE}}content{{/VARIABLE}} to
conditionally display content or iterate over the values of an array.
Learn more about mustache templates at https://mustache.github.io/
Simple usage:
mo [OPTIONS] filenames...
Options:
--allow-function-arguments
Permit functions to be called with additional arguments. Otherwise,
the only way to get access to the arguments is to use the
MO_FUNCTION_ARGS environment variable.
-d, --debug
Enable debug logging to stderr.
-u, --fail-not-set
Fail upon expansion of an unset variable. Will silently ignore by
default. Alternately, set MO_FAIL_ON_UNSET to a non-empty value.
-x, --fail-on-function
Fail when a function returns a non-zero status code instead of
silently ignoring it. Alternately, set MO_FAIL_ON_FUNCTION to a
non-empty value.
-f, --fail-on-file
Fail when a file (from command-line or partial) does not exist.
Alternately, set MO_FAIL_ON_FILE to a non-empty value.
-e, --false
Treat the string "false" as empty for conditionals. Alternately,
set MO_FALSE_IS_EMPTY to a non-empty value.
-h, --help
This message.
-s=FILE, --source=FILE
Load FILE into the environment before processing templates.
Can be used multiple times. The file must be a valid shell script
and should only contain variable assignments.
-o=DELIM, --open=DELIM
Set the opening delimiter. Default is "{{".
-c=DELIM, --close=DELIM
Set the closing delimiter. Default is "}}".
-- Indicate the end of options. All arguments after this will be
treated as filenames only. Use when filenames may start with
hyphens.
Mo uses the following environment variables:
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.
Mo is under a MIT style licence with an additional non-advertising clause.
See LICENSE.md for the full text.
This is open source! Please feel free to contribute.
https://github.com/tests-always-included/mo
MO_VERSION=3.0.7
EOF
}
runTest

56
tests/indented-partials Executable file
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#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export thisIsTrue=true
template() {
cat <<EOF
With spacing
{{> fixtures/indented-partials.partial}}
{{> fixtures/indented-partials.partial}}
Without spacing
{{> fixtures/indented-partials.partial}}
{{> fixtures/indented-partials.partial}}
With text
{{> fixtures/indented-partials.partial}}
text
{{> fixtures/indented-partials.partial}}
In a conditional
{{#thisIsTrue}}
{{> fixtures/indented-partials.partial}}
{{/thisIsTrue}}
EOF
}
expected() {
cat <<EOF
With spacing
first line
second line
first line
second line
Without spacing
first line
second line
first line
second line
With text
first line
second line
text
first line
second line
In a conditional
first line
second line
EOF
}
runTest

19
tests/inline-indentation Executable file
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@ -0,0 +1,19 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export data="|"
template() {
cat <<EOF
{{data}} {{> fixtures/inline-indentation}}
EOF
}
expected() {
cat <<EOF
| >
>
EOF
}
runTest

9
tests/internal-whitespace Executable file
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@ -0,0 +1,9 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export boolean=true
export template=$' | {{#boolean}} {{! Important Whitespace }}\n {{/boolean}} | \n'
export expected=$' | \n | \n'
runTest

11
tests/invalid-option Executable file
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@ -0,0 +1,11 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export person=""
export template=""
export returnCode=1
export arguments=(--something)
export expected=$'ERROR: Unknown option: --something (See --help for options)\n'
runTest

18
tests/inverted Executable file
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@ -0,0 +1,18 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export repo=()
template() {
cat <<EOF
{{#repo}}
<b>{{.}}</b>
{{/repo}}
{{^repo}}
No repos :(
{{/repo}}
EOF
}
export expected=$' No repos :(\n'
runTest

9
tests/issue-75 Executable file
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@ -0,0 +1,9 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export uv
export template='{{^uv}}OK{{/uv}}{{#uv}}FAIL{{/uv}}'
export expected='OK'
runTest

16
tests/list-contexts Executable file
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@ -0,0 +1,16 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export a=foo
export b=wrong
declare -A sec
sec=([b]="bar")
export sec
declare -A c
c=([d]="baz")
export c
export template="{{#sec}}{{a}} {{b}} {{c.d}}{{/sec}}"
export expected="foo bar baz"
runTest

24
tests/miss Executable file
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@ -0,0 +1,24 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export name="Chris"
export company="<b>GitHub</b>"
template() {
cat <<EOF
* .{{name}}.
* .{{age}}.
* .{{company}}.
* .{{{company}}}.
EOF
}
expected() {
cat <<EOF
* .Chris.
* ..
* .<b>GitHub</b>.
* .<b>GitHub</b>.
EOF
}
runTest

35
tests/multi-line-partial Executable file
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@ -0,0 +1,35 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export multilineData=$'line 1\nline 2'
template() {
cat <<EOF
Partial:
{{> fixtures/multi-line-partial.partial}}
Indented:
{{> fixtures/multi-line-partial.partial}}
EOF
}
expected() {
cat <<EOF
Partial:
line 1
line 2
Indented:
line 1
line 2
EOF
# This one looks odd, but if you check the spec spec/specs/partials.yaml,
# name "Standalone Indentation" (mirrors "standalone-indentation" in
# tests/), then the spec clearly shows that the indentation is applied
# before rendering.
}
runTest

33
tests/mush Executable file
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@ -0,0 +1,33 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export USER=jwerle
export GENDER=male
export THING=apple
export COLOR=red
export PERSON=tobi
export ADJECTIVE=cool
template() {
cat <<EOF
{{! this is a comment }}
{{USER}} is {{GENDER}}
{{THING}} is {{COLOR}}
{{PERSON}} is {{ADJECTIVE}}
{{USER}} is friends with {{PERSON}}
{{var}} {{value}}
EOF
}
expected() {
cat <<EOF
jwerle is male
apple is red
tobi is cool
jwerle is friends with tobi
EOF
}
runTest

8
tests/no-content Executable file
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@ -0,0 +1,8 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export template="Works"
export expected="Works"
runTest

22
tests/partial Executable file
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@ -0,0 +1,22 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export names=( "Tyler" "Abc" )
template() {
cat <<EOF
<h2>Names</h2>
{{#names}}
{{> fixtures/partial.partial}}
{{/names}}
EOF
}
expected() {
cat <<EOF
<h2>Names</h2>
<strong>Tyler</strong>
<strong>Abc</strong>
EOF
}
runTest

9
tests/partial-bad-file Executable file
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@ -0,0 +1,9 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
# This file intentionally does not exist
export template="{{>fixtures/partial-bad-file.partial}}"
export expected=""
runTest

19
tests/partial-missing Executable file
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@ -0,0 +1,19 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export returnCode=1
export arguments=(--fail-on-file)
export person=""
template() {
cat <<EOF
Won't be there: {{> fixtures/partial-missing.partial}}
EOF
}
expected() {
cat <<EOF
ERROR: No such file: partial-missing.partial
EOF
}
runTest

8
tests/single-quote Executable file
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@ -0,0 +1,8 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export template="{{'Works'}}"
export expected="Works"
runTest

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@ -0,0 +1,9 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export thing="Works"
export template="{{thing}}"
export expected="Works"
runTest

25
tests/source Executable file
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@ -0,0 +1,25 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export arguments=(--source=fixtures/source.vars)
template() {
cat <<EOF
{{VAR}}
{{#ARR}}
* {{.}}
{{/ARR}}
{{ASSOC_ARR.a}} {{ASSOC_ARR.b}}
EOF
}
expected() {
cat <<EOF
value
* 1
* 2
* 3
AAA BBB
EOF
}
runTest

10
tests/source-bad-file Executable file
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@ -0,0 +1,10 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export arguments=(--source=invalid)
export returnCode=1
export template="Do not display this"
export expected=$'No such file: invalid\n'
runTest

21
tests/source-multiple Executable file
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@ -0,0 +1,21 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export arguments=(--source=fixtures/source-multiple-1.vars --source=fixtures/source-multiple-2.vars)
template() {
cat <<EOF
A: {{A}}
B: {{B}}
C: {{C}}
EOF
}
expected() {
cat <<EOF
A: from1
B: from2
C: from2
EOF
}
runTest

10
tests/source-no-file Executable file
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@ -0,0 +1,10 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export arguments=(--source=)
export returnCode=1
export template="Do not display this"
export expected=$'No such file: \n'
runTest

24
tests/standalone-indentation Executable file
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@ -0,0 +1,24 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export content=$'<\n->'
template() {
cat <<'EOF'
\
{{>fixtures/standalone-indentation.partial}}
/
EOF
}
expected() {
cat <<'EOF'
\
|
<
->
|
/
EOF
}
runTest

9
tests/triple-brace Executable file
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@ -0,0 +1,9 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export thing="Works"
export template="{{{thing}}}"
export expected="Works"
runTest

26
tests/typical Executable file
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@ -0,0 +1,26 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export NAME="Chris"
export VALUE=10000
export TAXED_VALUE=6000
export IN_CA=true
template() {
cat <<EOF
Hello {{NAME}}
You have just won {{VALUE}} dollars!
{{#IN_CA}}
Well, {{TAXED_VALUE}} dollars, after taxes.
{{/IN_CA}}
EOF
}
expected() {
cat <<EOF
Hello Chris
You have just won 10000 dollars!
Well, 6000 dollars, after taxes.
EOF
}
runTest

10
tests/unbound-variable Executable file
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@ -0,0 +1,10 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
declare -A a
export a=()
export template="o{{#a.b}}WRONG{{/a.b}}k"
export expected="ok"
runTest

9
tests/variable Executable file
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@ -0,0 +1,9 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export foo=bar
export template="{{#foo}}{{.}} is {{foo}}{{/foo}}"
export expected="bar is bar"
runTest

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@ -0,0 +1,53 @@
#!/usr/bin/env bash
cd "${0%/*}" || exit 1
. ../run-tests
export array=("wrong0" "item1" "wrong2")
export index=1
# Example #8 is weird because of how the variable name is parsed. Considering
# it's an edge case when a user probably has a bug in a template, I think we're
# good leaving it as-is until a bug report is filed.
template() {
cat <<'EOF'
Starting point:
1 "{{ array.1 }}" = "item1"
Whole expression:
2 "{{ {'array.' index} }}" = "array.1"
3 "{{ ('array.' index) }}" = "item1"
Partial expression:
4 "{{ 'array.' {index} }}" = "array.1"
5 "{{ 'array.' (index) }}" = "array."
Combined:
6 "{{ {'array.' {index}} }}" = "array.1"
7 "{{ {'array.' (index)} }}" = "array."
8 "{{ ('array.' (index)) }}" = "wrong0,item1,wrong2"
9 "{{ ('array.' {index}) }}" = "item1"
EOF
}
expected() {
cat <<'EOF'
Starting point:
1 "item1" = "item1"
Whole expression:
2 "array.1" = "array.1"
3 "item1" = "item1"
Partial expression:
4 "array.1" = "array.1"
5 "array." = "array."
Combined:
6 "array.1" = "array.1"
7 "array." = "array."
8 "wrong0,item1,wrong2" = "wrong0,item1,wrong2"
9 "item1" = "item1"
EOF
}
runTest