Initial import

utils/shgit

@@ -0,0 +1,49 @@
+# env
+# Written in 2019 by Lucas
+# CC0 1.0 Universal/Public domain - No rights reserved
+#
+# To the extent possible under law, the author(s) have dedicated all
+# copyright and related and neighboring rights to this software to the
+# public domain worldwide. This software is distributed without any
+# warranty. You should have received a copy of the CC0 Public Domain
+# Dedication along with this software. If not, see
+# <http://creativecommons.org/publicdomain/zero/1.0/>.
+
+shgit() {
+	if ! gitdir=$(git rev-parse --git-dir 2>/dev/null) \
+	    || [ -z "$gitdir" ]; then
+		return
+	fi
+
+	symbolic=$(git symbolic-ref --short HEAD 2>/dev/null)
+	hash=$(git rev-parse --short HEAD 2>/dev/null)
+	name=${symbolic:-${hash:-"?"}}
+
+	rb=
+	rbdir="$gitdir/rebase-merge"
+	if [ -d "$rbdir" ]; then
+		rb="REBASE"
+		read -r name <"$rbdir/head-name"
+		name=${name##*/}
+		[ -f "$rbdir/interactive" ] && rb="$rb-i"
+		rbcount=$(wc -l <"$rbdir/done")
+		read -r rbtotal <"$rbdir/end"
+		rb="$rb ${rbcount##* }/$rbtotal"
+	fi
+
+	status=
+	if [ -z "$(git status --porcelain)" ]; then
+		status="*"
+	fi
+
+	commits=$(git rev-list --left-right --count @{upstream}...HEAD \
+	    2>/dev/null | {
+		t=
+		IFS="	" read -r behind ahead
+		[ ${behind:-0} -gt 0 ] && t=$t"v$behind"
+		[ ${ahead:-0} -gt 0 ] && t=$t"^$ahead"
+		printf "%s" "$t"
+	})
+
+	printf "%s" "$name${rb:+:$rb}${status:+:$status}${commits:+:$commits}"
+}