From 767870085be5214e7fe3680d29d625c4d7428262 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Elan=20Ruusam=C3=A4e?= <glen@delfi.ee>
Date: Sat, 9 Jan 2016 17:52:20 +0200
Subject: [PATCH] include my bash prompt customization

optional, can be enabled if you set in your ~/.bashrc:
PROMPT_COMMAND=__bash_prompt_command
---
 shrc.sh | 69 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)

diff --git a/shrc.sh b/shrc.sh
index a15e0e5..05ec24c 100755
--- a/shrc.sh
+++ b/shrc.sh
@@ -262,3 +262,72 @@ d() {
 rpm2spec() {
 	sed -re 's,^(.+)-[^-]+-[^-]+$,\1.spec,'
 }
+
+
+#
+# A colorized bash prompt
+# - shows curret branch
+# - shows if branch is up to date/ahead/behind
+# - shows if last command exited with error (red)
+#
+# To use it, set $PROMPT_COMMAND env var:
+# PROMPT_COMMAND=__bash_prompt_command
+#
+__bash_prompt_command() {
+	local previous_return_value=$?
+
+	local RED="\[\033[0;31m\]"
+	local YELLOW="\[\033[0;33m\]"
+	local GREEN="\[\033[0;32m\]"
+	local BLUE="\[\033[0;34m\]"
+	local LIGHT_RED="\[\033[1;31m\]"
+	local LIGHT_GREEN="\[\033[1;32m\]"
+	local WHITE="\[\033[1;37m\]"
+	local LIGHT_GRAY="\[\033[0;37m\]"
+	local COLOR_NONE="\[\e[0m\]"
+
+	local prompt="${BLUE}[${RED}\w${GREEN}$(__bash_parse_git_branch)${BLUE}]${COLOR_NONE} "
+	if [ $previous_return_value -eq 0 ]; then
+		PS1="${prompt}➔ "
+	else
+		PS1="${prompt}${RED}➔${COLOR_NONE} "
+	fi
+}
+
+# helper for __bash_prompt_command
+# command line (git) coloring
+# note we use "\" here to avoid any "git" previous alias/func
+__bash_parse_git_branch() {
+	# not in git dir. return early
+	\git rev-parse --git-dir &> /dev/null || return
+
+	local git_status branch_pattern remote_pattern diverge_pattern
+	local state remote branch
+
+	git_status=$(\git -c color.ui=no status 2> /dev/null)
+	branch_pattern="^On branch ([^${IFS}]*)"
+	remote_pattern="Your branch is (behind|ahead) "
+	diverge_pattern="Your branch and (.*) have diverged"
+
+	if [[ ! ${git_status} =~ "working directory clean" ]]; then
+		state="${RED}⚡"
+	fi
+
+	# add an else if or two here if you want to get more specific
+	if [[ ${git_status} =~ ${remote_pattern} ]]; then
+		if [[ ${BASH_REMATCH[1]} == "ahead" ]]; then
+			remote="${YELLOW}↑"
+		else
+			remote="${YELLOW}↓"
+		fi
+	fi
+
+	if [[ ${git_status} =~ ${diverge_pattern} ]]; then
+		remote="${YELLOW}↕"
+	fi
+
+	if [[ ${git_status} =~ ${branch_pattern} ]]; then
+		branch=${BASH_REMATCH[1]}
+		echo " (${branch})${remote}${state}"
+	fi
+}
-- 
2.44.0