re-jigger to allow easier setting of the path

1 files changed, 51 insertions, 0 deletions

diff --git a/.local/bin/config-path b/.local/bin/config-path
new file mode 100755
index 0000000..a5c3b0e
--- /dev/null
+++ b/.local/bin/config-path
@@ -0,0 +1,51 @@
+#!/bin/bash
+
+# All the prefixes to consider
+prefixes=(
+	"$HOME"
+	"$HOME/.local.`uname -m`"
+	"$HOME/.local/bin"
+	"$HOME/.prefix.`uname -m`"
+	"$HOME/.prefix"
+	"$HOME"/.gem/ruby/*
+)
+
+######################################################################
+
+in_array() {
+	local needle=$1; shift
+	local haystack=("$@")
+	local straw
+	for straw in "${haystack[@]}"; do
+		[[ "$needle" == "$straw" ]] && return 0
+	done
+	return 1
+}
+
+# Import existing values
+IFS=: paths=($PATH)
+IFS=: rubylibs=($RUBYLIB)
+
+# Scan through prefixes
+for prefix in "${prefixes[@]}"; do
+	# PATH
+	dir="$prefix/bin"
+	if [[ -d "$dir" ]] && ! in_array "$dir" "${paths[@]}"; then
+		paths+=("$dir")
+	fi
+	# RUBYLIB
+	dir="$prefix/lib"
+	if [[ -d "$dir" ]] && ! in_array "$dir" "${rubylibs[@]}"; then
+		rubylibs+=("$dir")
+	fi
+done
+
+# Finally, print our values
+IFS=: PATH="${paths[*]}"
+IFS=: RUBYLIB="${rubylibs[*]}"
+
+# The sed bit here is the only time we call an external program
+{
+	declare -p PATH
+	declare -p RUBYLIB
+} | sed 's/^declare \(-\S* \)*//'