initial commit

lib/lib.bash

@@ -0,0 +1,82 @@
+shopt -s expand_aliases
+unalias -a
+
+__path=$(which gdate 2>/dev/null)
+if [[ $__path ]]; then
+	alias date=$__path
+else
+	alias date=$(which date 2>/dev/null)
+fi
+
+__path=$(which ginstall 2>/dev/null)
+if [[ $__path ]]; then
+	alias install=$__path
+else
+	alias install=$(which install 2>/dev/null)
+fi
+
+__path=$(which greadlink 2>/dev/null)
+if [[ $__path ]]; then
+	alias readlink=$__path
+else
+	alias readlink=$(which readlink 2>/dev/null)
+fi
+
+__path=$(which gsed 2>/dev/null)
+if [[ $__path ]]; then
+	alias sed=$__path
+else
+	alias sed=$(which sed 2>/dev/null)
+fi
+
+
+set -o errexit
+
+trap "error_handler" ERR
+
+function error_handler() {
+	local -i ec=$?
+
+	exit ${ec}
+}
+
+log() {
+	local -ri fd=$1
+	local -r fmt="$2\n"
+	shift 2
+	printf "$fmt" "$@" >> /dev/fd/$fd
+}
+
+die() {
+	local -ri ec=$1
+	shift
+	local cout
+	if (( ec == 0)); then
+		cout='1'
+	else
+		cout='2'
+	fi	
+	if [[ -n $@ ]]; then
+		local -r fmt=$1
+		shift
+		log $cout "$fmt" "$@"
+	fi
+	exit $ec
+}
+
+abspath () {
+	(cd "$1" && pwd)
+}
+
+append_path () {
+	local -r P=$1
+	local -r d=$2
+
+        if ! echo ${!P} | egrep -q "(^|:)${d}($|:)" ; then
+		if [[ -z ${!P} ]]; then
+			eval $P=${d}
+		else
+			eval $P=${!P}:${d}
+        	fi
+	fi
+}