From 6001786990501e849f04e018dccb0b5bf7e6d991 Mon Sep 17 00:00:00 2001
From: Luke Shumaker <shumakl@purdue.edu>
Date: Mon, 21 Apr 2014 14:25:06 -0400
Subject: improve config-path

---
 .local/bin/config-path | 80 +++++++++++++++++++++++++++-----------------------
 1 file changed, 44 insertions(+), 36 deletions(-)

(limited to '.local')

diff --git a/.local/bin/config-path b/.local/bin/config-path
index 99f0910..d0afa4a 100755
--- a/.local/bin/config-path
+++ b/.local/bin/config-path
@@ -12,6 +12,8 @@ prefixes=(
 
 ######################################################################
 
+IFS=:
+
 in_array() {
 	local needle=$1; shift
 	local haystack=("$@")
@@ -22,48 +24,54 @@ in_array() {
 	return 1
 }
 
+var_init() {
+	eval "ary_$1=(\$$1)"
+}
+
+var_add() {
+	local varname=ary_$1; shift
+	local var_all="${varname}[@]"
+	local dirs=("$@")
+
+	local dir
+	for dir in "${dirs[@]}"; do
+		if [[ -d "$dir" ]] && ! in_array "$dir" "${!var_all}"; then
+			eval "$varname=(\"\$dir\" \"\${$var_all}\")"
+		fi
+	done
+}
+
+var_done() {
+	eval "$1=\"\${ary_$1[*]}\""
+	declare -p $1
+}
+
+######################################################################
+
 # Import existing values
-IFS=: paths=($PATH)
-IFS=: manpaths=($MANPATH)
-IFS=: rubylibs=($RUBYLIB)
-IFS=: perl5libs=($PERL5LIB)
+var_init PATH
+var_init MANPATH
+var_init LD_LIBRARY_PATH
+var_init RUBYLIB
+var_init PERL5LIB
 
 # Scan through prefixes
 for prefix in "${prefixes[@]}"; do
-	# PATH
-	for dir in "$prefix/bin" "$prefix/sbin"; do
-		if [[ -d "$dir" ]] && ! in_array "$dir" "${paths[@]}"; then
-			paths=("$dir" "${paths[@]}")
-		fi
-	done
-	# MANPATH
-	dir="$prefix/share/man"
-	if [[ -d "$dir" ]] && ! in_array "$dir" "${manpaths[@]}"; then
-		manpaths=("$dir" "${manpaths[@]}")
-	fi
-	# RUBYLIB
-	dir="$prefix/lib"
-	if [[ -d "$dir" ]] && ! in_array "$dir" "${rubylibs[@]}"; then
-		rubylibs=("$dir" "${rubylibs[@]}")
-	fi
-	# PERL5LIB
-	for dir in "$prefix"/lib*/perl5; do
-		if [[ -d "$dir" ]] && in_array "$dir" "${manpaths[@]}"; then
-			perl5libs=("$dir" "${perl5libs[@]}")
-		fi
-	done
+	var_add PATH "$prefix/bin" "$prefix/sbin"
+	var_add MANPATH "$prefix/share/man"
+	var_add LD_LIBRARY_PATH "$prefix"/lib{,32,64}
+	var_add RUBYLIB         "$prefix"/lib{,32,64}
+	var_add PERL5LIB        "$prefix"/lib{,32,64}/perl5
 done
 
-# Finally, print our values
-IFS=: PATH="${paths[*]}"
-IFS=: MANPATH="${manpaths[*]}"
-IFS=: RUBYLIB="${rubylibs[*]}"
-IFS=: PERL5LIB="${perl5libs[*]}"
 
-# The sed bit here is the only time we call an external program
+
+# Finally, print our values
+# The `sed` bit here is the only time we call an external program
 {
-	declare -p PATH
-	declare -p MANPATH
-	declare -p RUBYLIB
-	declare -p PERL5LIB
+	var_done PATH
+	var_done MANPATH
+	var_done LD_LIBRARY_PATH
+	var_done RUBYLIB
+	var_done PERL5LIB
 } | sed 's/^declare \(-\S* \)*//'
-- 
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