From 865a768e44624c465e9d42c6ca91d0ef29a8e7ad Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@sbcglobal.net>
Date: Sat, 7 Feb 2015 00:26:11 -0500
Subject: backport changes from cs-purdue

---
 .local/bin/config-path     | 90 ++++++++++++++++++++++++----------------------
 .local/bin/config-symlinks |  9 +++--
 2 files changed, 55 insertions(+), 44 deletions(-)

(limited to '.local')

diff --git a/.local/bin/config-path b/.local/bin/config-path
index f4c2342..7cd1fcd 100755
--- a/.local/bin/config-path
+++ b/.local/bin/config-path
@@ -1,22 +1,14 @@
 #!/bin/bash
 
-the_guts() {
-	# Add generic prefixes
-	add_prefix "$HOME"
-	add_prefix "$HOME/.local.$(uname -m)"
-	add_prefix "$HOME/.local"
-	add_prefix "$HOME/.prefix.$(uname -m)"
-	add_prefix "$HOME/.prefix"
-
-	# Add rubygem prefixes
-	local dir
-	for dir in "$HOME"/.gem/*; do
-		# Only add it if we have that type of ruby
-		if type "${dir##*/}" &>/dev/null; then
-			add_prefix "$dir"/*
-		fi
-	done
-}
+# All the prefixes to consider
+prefixes=(
+	"$HOME"
+	"$HOME/.local.$(uname -m)"
+	"$HOME/.local"
+	"$HOME/.prefix.$(uname -m)"
+	"$HOME/.prefix"
+	"$HOME"/.gem/ruby/*
+)
 
 in_array() {
 	local needle=$1; shift
@@ -28,41 +20,55 @@ in_array() {
 	return 1
 }
 
-add_prefix() {
-	local prefix=$1
-	local dir
+var_init() {
+	eval "ary_$1=(\$$1)"
+}
 
-	# PATH
-	dir="$prefix/bin"
-	if [[ -d "$dir" ]] && ! in_array "$dir" "${paths[@]}"; then
-		paths=("$dir" "${paths[@]}")
-	fi
+var_add() {
+	local varname=ary_$1; shift
+	local var_all="${varname}[@]"
+	local dirs=("$@")
 
-	# RUBYLIB
-	dir="$prefix/lib"
-	if [[ -d "$dir" ]] && ! in_array "$dir" "${rubylibs[@]}"; then
-		rubylibs=("$dir" "${rubylibs[@]}")
-	fi
+	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
 }
 
 main() {
+	IFS=:
 	# Import existing values
-	declare -ga paths rubylibs
-	IFS=: paths=($PATH)
-	IFS=: rubylibs=($RUBYLIB)
-
-	the_guts
+	var_init PATH
+	var_init MANPATH
+	var_init LD_LIBRARY_PATH
+	var_init RUBYLIB
+	var_init PERL5LIB
 
-	# Put our values into the env variables
-	IFS=: PATH="${paths[*]}"
-	IFS=: RUBYLIB="${rubylibs[*]}"
+	# Scan through prefixes
+	for prefix in "${prefixes[@]}"; do
+		var_add PATH "$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 the values
-	# The sed bit here is the only time we call an external program
+	# The `sed` bit here is the only time we call an external program
 	{
-		declare -p PATH
-		declare -p RUBYLIB
+		var_done PATH
+		var_done MANPATH
+		var_done LD_LIBRARY_PATH
+		var_done RUBYLIB
+		var_done PERL5LIB
 	} | sed 's/^declare \(-\S* \)*//'
 }
 
-main
+main "$@"
diff --git a/.local/bin/config-symlinks b/.local/bin/config-symlinks
index 0831ca3..7d889f0 100755
--- a/.local/bin/config-symlinks
+++ b/.local/bin/config-symlinks
@@ -1,6 +1,8 @@
 #!/bin/bash
 
-sed -e '/^\s*$/d' -e '/#/d' symlinks | while read _target _link; do
+declare -i ret=0
+
+while read _target _link; do
 	target="$(sed -rn 's|[^/]+/|../|g;s|/[^/]+$|/|p' <<<"$_link")${_target}"
 	link="$HOME/$_link"
 	if [[ -L "$link" ]]; then
@@ -8,8 +10,11 @@ sed -e '/^\s*$/d' -e '/#/d' symlinks | while read _target _link; do
 	fi
 	if [[ -e "$link" ]]; then
 		echo "ERROR: file exists: $link" >> /dev/stderr
+		ret=1
 	else
 		mkdir -p "${link%/*}"
 		ln -s "$target" "$link"
 	fi
-done
+done < <(sed -e '/^\s*$/d' -e '/#/d' "$XDG_CONFIG_HOME/symlinks")
+
+exit $ret
-- 
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