mo/demo/function-for-foreach

#!/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