1 files changed, 89 insertions, 0 deletions
diff --git a/bin/bashrc-functions.sh b/bin/bashrc-functions.sh
new file mode 100644
index 000000000..91ff6d738
--- /dev/null
+++ b/bin/bashrc-functions.sh
@@ -0,0 +1,89 @@
+#!/bin/bash
+# Copyright 1999-2011 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+portageq() {
+	PYTHONPATH=${PORTAGE_PYM_PATH}${PYTHONPATH:+:}${PYTHONPATH} \
+	"${PORTAGE_PYTHON:-/usr/bin/python}" "${PORTAGE_BIN_PATH}/portageq" "$@"
+}
+
+register_die_hook() {
+	local x
+	for x in $* ; do
+		has $x $EBUILD_DEATH_HOOKS || \
+			export EBUILD_DEATH_HOOKS="$EBUILD_DEATH_HOOKS $x"
+	done
+}
+
+register_success_hook() {
+	local x
+	for x in $* ; do
+		has $x $EBUILD_SUCCESS_HOOKS || \
+			export EBUILD_SUCCESS_HOOKS="$EBUILD_SUCCESS_HOOKS $x"
+	done
+}
+
+strip_duplicate_slashes() {
+	if [[ -n $1 ]] ; then
+		local removed=$1
+		while [[ ${removed} == *//* ]] ; do
+			removed=${removed//\/\///}
+		done
+		echo ${removed}
+	fi
+}
+
+# this is a function for removing any directory matching a passed in pattern from
+# PATH
+remove_path_entry() {
+	save_IFS
+	IFS=":"
+	stripped_path="${PATH}"
+	while [ -n "$1" ]; do
+		cur_path=""
+		for p in ${stripped_path}; do
+			if [ "${p/${1}}" == "${p}" ]; then
+				cur_path="${cur_path}:${p}"
+			fi
+		done
+		stripped_path="${cur_path#:*}"
+		shift
+	done
+	restore_IFS
+	PATH="${stripped_path}"
+}
+
+# Set given variables unless these variable have been already set (e.g. during emerge
+# invocation) to values different than values set in make.conf.
+set_unless_changed() {
+	if [[ $# -lt 1 ]]; then
+		die "${FUNCNAME}() requires at least 1 argument: VARIABLE=VALUE"
+	fi
+
+	local argument value variable
+	for argument in "$@"; do
+		if [[ ${argument} != *=* ]]; then
+			die "${FUNCNAME}(): Argument '${argument}' has incorrect syntax"
+		fi
+		variable="${argument%%=*}"
+		value="${argument#*=}"
+		if eval "[[ \${${variable}} == \$(env -u ${variable} portageq envvar ${variable}) ]]"; then
+			eval "${variable}=\"\${value}\""
+		fi
+	done
+}
+
+# Unset given variables unless these variable have been set (e.g. during emerge
+# invocation) to values different than values set in make.conf.
+unset_unless_changed() {
+	if [[ $# -lt 1 ]]; then
+		die "${FUNCNAME}() requires at least 1 argument: VARIABLE"
+	fi
+
+	local variable
+	for variable in "$@"; do
+		if eval "[[ \${${variable}} == \$(env -u ${variable} portageq envvar ${variable}) ]]"; then
+			unset ${variable}
+		fi
+	done
+}