initial testing on using bash to build repos

build.sh

@@ -0,0 +1,64 @@
+#!/bin/bash
+set -e
+
+cd "$(dirname "$(readlink -f "$BASH_SOURCE")")"
+
+# TODO config file of some kind
+LIBDIR='../library'
+
+# arg handling: all args are [repo|repo:tag]
+# no argument means build all repos in $LIBDIR
+repos=( "$@" )
+if [ ${#repos[@]} -eq 0 ]; then
+	repos=( $(cd "$LIBDIR" && echo *) )
+fi
+repos=( "${repos[@]%/}" )
+
+# globals for handling the repo queue and repo info parsed from library
+queue=()
+declare -A repoGitRepo=()
+declare -A repoGitRef=()
+declare -A repoGitDir=()
+
+# gather all the `repo:tag` combos to build
+for repoTag in "${repos[@]}"; do
+	if [ "$repoTag" = 'MAINTAINERS' ]; then
+		continue
+	fi
+	
+	if [ "${repoGitRepo[$repoTag]}" ]; then
+		queue+=( "$repoTag" )
+		continue
+	fi
+	repo="${repoTag%:*}"
+	
+	# parse the repo library file
+	IFS=$'\n'
+	repoTagLines=( $(cat "$LIBDIR/$repo" | grep -vE '^#|^\s*$') )
+	unset IFS
+	
+	tags=()
+	for line in "${repoTagLines[@]}"; do
+		tag="$(echo "$line" | awk -F ': +' '{ print $1 }')"
+		fullGitUrl="$(echo "$line" | awk -F ' +' '{ print $2 }')"
+		gitDir="$(echo "$line" | awk -F ' +' '{ print $3 }')"
+		
+		gitUrl="${fullGitUrl%%@*}"
+		gitRef="${fullGitUrl#*@}"
+		
+		repoGitRepo[$repo:$tag]="$gitUrl"
+		repoGitRef[$repo:$tag]="$gitRef"
+		repoGitDir[$repo:$tag]="$gitDir"
+		tags+=( "$repo:$tag" )
+	done
+	
+	if [ "$repo" = "$repoTag" ]; then
+		# add all tags we just parsed
+		queue+=( "${tags[@]}" )
+	else
+		queue+=( "$repoTag" )
+	fi
+done
+
+echo "${queue[@]}"
+# TODO clone and build