From 18dac8819eeac014c28383604e8f7a400647fcee Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Georges=20Dup=C3=A9ron?= <jahvascriptmaniac+github@free.fr>
Date: Thu, 19 Aug 2010 04:38:36 +0200
Subject: [PATCH] First version of the script.

---
 git-hist.sh | 77 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100755 git-hist.sh

diff --git a/git-hist.sh b/git-hist.sh
new file mode 100755
index 0000000..7ce3031
--- /dev/null
+++ b/git-hist.sh
@@ -0,0 +1,77 @@
+#!/bin/bash
+
+# TODO :
+#  * use cursor keys
+#  * show also current (uncommited) version
+#  * syntax highlighting
+#     * process through nano (problem : nano's output is limited to one single screen, and puts some termcaps at the begining and end of output.)
+#     * use vim : http://machine-cycle.blogspot.com/2007/10/syntax-highlighting-pager.html
+#     * use highlight --ansi --force, or pygmentize -g : http://machine-cycle.blogspot.com/2008/02/syntax-highlighting-pager-reloaded.html
+#     * use emacs
+#     * choose from one of the above by guessing from $EDITOR and what's installed on the system.
+# * doesn't seem to include pre-rename versions of a file that was renamed.
+#     * git log --follow --name-only --oneline galerie-index.php
+#     * git whatchanged --follow galerie-index.php | grep '^\(:\|commit \)'
+
+file="$1"
+if [ -z $file ]; then
+	echo "Usage : $0 filename"
+	exit 1
+fi
+
+statusbar() {
+	echo -e "\e[47m\e[K[$i / $max] : ${rev[i]}\e[1000G\e[46D\e[1mh\e[47m : help  \e[1mp\e[47m,\e[1m-\e[47m : previous  \e[1mn\e[47m,\e[1m+\e[47m : next  \e[1mq\e[47m : quit \e[m"
+}
+
+page=0
+pager() {
+	termlines="$(tput lines)"
+	tail -n +$(($termlines*$page/2)) | head -n $(($termlines-2))
+}
+
+show() {
+	clear
+	statusbar
+	git show "${rev[i]}:$fullpath" | nl | pager
+}
+
+help() {
+	clear
+	statusbar
+	echo -e "status line : [version i / of total] : sha1"
+	echo -e "\e[1mh\e[m   : help"
+	echo -e "\e[1mp\e[m,\e[1m-\e[m : previous version"
+	echo -e "\e[1mn\e[m,\e[1m+\e[m : next version"
+	echo -e "\e[1mf\e[m   : first version"
+	echo -e "\e[1ml\e[m   : last version"
+	echo -e "\e[1md\e[m   : scroll down"
+	echo -e "\e[1mu\e[m   : scroll up"
+	echo -e "\e[1mt\e[m   : scroll to top"
+	echo -e "\e[1mq\e[m   : quit"
+}
+
+fullpath="$(git ls-files --full-name "$file")"
+i=0
+for ab in $(git log --oneline "$file" | cut -d ' ' -f 1 | tac); do
+	rev[i]="$ab"
+	i=$((i+1))
+done
+max="$((i-1))"
+
+i="$max"
+show
+while read -n 1 ab; do
+	case "$ab" in
+		"") continue ;;
+		"p"|"+") i=$((i-1)); [ "$i" -lt 0 ] && i=0 ;;
+		"n"|"-") i=$((i+1)); [ "$i" -gt "$max" ] && i="$max" ;;
+		"f") i=0 ;;
+		"l") i="$max" ;;
+		"d") page=$((page+1)) ;;
+		"u") page=$((page-1)); [ "$i" -lt 0 ] && i=0 ;;
+		"t") page=0 ;;
+		"h") help; continue ;;
+		"q") break ;;
+	esac
+	show
+done