#!/bin/sh
#
# ini2moo - convert ini files into moo format
#

PATH=/bin:/usr/bin
export PATH

if [ $# -ne 2 ]; then
    printf "Usage: moo2ini file.ini file.moo\n" >&2
    exit 2
fi

ini_file="$1"
moo_file="$2"

if [ ! -r "${ini_file}" ]; then
    printf "Error: could not open '%s'\n" "${ini_file}" >&2
    exit 1
fi
if [ ! -r "${moo_file}" ]; then
    printf "Error: could not open '%s'\n" "${moo_file}" >&2
    exit 1
fi

awk -v application="${moo_file%.moo}" '
    BEGIN {
        FS="="
        moo_file = application ".moo"
        moo_keys_len = inside_app = 0
        while ((getline < moo_file) > 0)
            if (NF==2) moo_keys[++moo_keys_len] = $1
    }

    /^\[[^]]+\]$/ {
        if ($0 == "[" application "]") {
            inside_app = 1
        } else {
            inside_app = 0
        }
        next
    }

    inside_app == 1 && NF > 1 && $1 ~ /^[0-9]+$/ {
        value = $1
        $1 = ""
        sub(/^[ ]+/, "")
        printf("%s=%s\n", moo_keys[value], $0)
    }
' <"${ini_file}"