Copies all mods from the mods folder into a maven style directory structure and creates a mods.txt containing the maven coordinates. This can be used to create a ModList file (https://github.com/MinecraftForge/FML/wiki/New-JSON-Modlist-format). This script requires jq to work (https://stedolan.github.io/jq/)

reporizer.sh

#!/bin/bash
modsDir=mods/*.jar
repoDir=repo/mods

for file in $modsDir
do
	mcmodInfo=`unzip -p "$file" mcmod.info 2> /dev/null`
	if [[ $? -ne 0 ]]; then
		echo "$file has no mcmeta.info"
		continue;
	fi
	modid=`echo "$mcmodInfo" | tr "\r" " " | tr "\n" " " | jq --raw-output 'if type=="array" then .[0].modid else .modList[0].modid end'`
	version=`echo "$mcmodInfo" | tr "\r" " " | tr "\n" " " | jq --raw-output 'if type=="array" then .[0].version else .modList[0].version end'`
	if [[ $? -ne 0 ]]; then
		echo "Unable to parse mcmeta of $file"
		echo "$mcmodInfo" > "$file.json"
		continue;
	fi
	target="$repoDir/${modid,,}/$version/${modid,,}-$version.jar"
	mkdir -p `dirname $target` 2> /dev/null
	cp "$file" "$target"
	echo "mods:$modid:$version" >> mods.txt
done;