#!/bin/bash
# Copyright (c) 2006-2007 Mauro Carvalho Chehab (mchehab@infradead.org)
# This code is placed under the terms of the GNU General Public License v2
#
#This script is capable to mass import patches from a mercurial tree
#

if [ "$1" == "" ]; then
	echo "Usage: $0 <url>"
	exit
fi

TREE="`echo $1|perl -ne 's|[/]$||; s|^.*[/]||; print $_;'`"

if [[ "`echo $1|grep ^http://`" != "" ]]; then
	SITE="`echo $1|perl -ne 's|[/]$||; print $_;'`"
	echo Pushing from remote site $SITE, tree: $TREE
else
	DIR=$1
	echo "Pushing from local directory $DIR, tree=$TREE"
fi

if [ "$TMP" == "" ]; then
	TMP=/tmp
fi
TMP=$TMP/newpatches
if [ ! -d $TMP ]; then
	mkdir $TMP
else
	rm $TMP/*
fi

if [ "$DIR" != "" ]; then
	CS="`hg outgoing -R $DIR .|grep 'changeset:'|cut -f2 -d:`"
else
	CS="`hg incoming $SITE |grep 'changeset:'|cut -f3 -d:`"
fi

NUM="`echo $CS|wc -w`"
echo Number of patches: $NUM

j=1
for i in $CS; do
	name=$TMP/hg_${TREE}_$(printf %0${#NUM}d ${j}).patch
	echo $name with cs=$i
	if [ "$DIR" != "" ]; then
		hg export -R $DIR $i >$name
	else
		wget -q -O $name "$SITE?cmd=changeset;node=$i;style=raw"
	fi

	j=$((j+1))
done

echo "Diffstat of the imported series:"
diffstat -w 72 -p1 $TMP/hg_${TREE}_*.patch

# To cherry pick all files, you can do something like:
#for i in $TMP/newpatches/*; do
#	hg import $i;
#done