#!/bin/bash

#
# Script for updating vim sources by patches from Bram
#
# This script is OBSOLETE, but you can check new version in
# vimconfig project HERE:
#
# 	http://www.platon.sk/projects/vimconfig/
#
# Developed by Lubomir Host 'rajo' <rajo AT platon.sk>
# Copyright (c) 2003 Platon SDG
# Licensed under terms of GNU General Public License.
# All rights reserved.
#

# $Platon$

# Define vim versions:
VIM_VER="vim61b"
VIM_VER_LONG="vim-6.1b"
VIM_VER_EGREP="^6\.1b\."


# Web site where patches are located
#URL="ftp://ftp.vim.org/pub/vim/patches"
URL="ftp://ftp.vim.org/pub/vim/unstable/patches/"

# Directory where Vim sources are located
#SRC_DIR="/opt/scratch/rajo/src/vim"
SRC_DIR="/opt/scratch/rajo/src/vim/unstable"

# Where save tar-bziped archiv
DIST_DIR="$HOME/public_html/vim/dist"

# '6.0.0.099' --> '98'
# for version 6.0.001 return empty string
old_version()
{
#	if [ "x$1" = "x6.0.001" ]; then
#	if [ "x$1" = "x6.1a.001" ]; then
#		echo;
#		return;
#	fi
#	echo $1 | awk 'BEGIN {FS="."} { print "." $3 - 1 }'
#	echo $1 | awk 'BEGIN {FS="."} { print ".0" $3 - 1 }'
	echo $1 | awk ' BEGIN {FS="."} { if ($3 < 11) { print ".00" $3 - 1 ; next; } if ($3 < 101) { print ".0" $3 - 1 ; next; } print "." $3 - 1 ; }'
}

# '6.0.099' --> '99'
new_version()
{
#	echo $1 | awk 'BEGIN {FS="."} { print "." $3 - 1 + 1 }'
	echo $1 | awk 'BEGIN {FS="."} { print "." $3  }'
}

download_patch()
{
	DIR=`pwd`;
	cd $SRC_DIR/patches && \
		wget -nH -nd $URL/$1 || \
			( sleep 100;
				wget -nH -nd $URL/$1 ) || return 1 ;
	cd $DIR
}

patch_sources()
{
	DIR=`pwd`;
	cd $SRC_DIR/patches && \
		patch -p0 < $1 && \
			cd $SRC_DIR && \
				mv "$VIM_VER"`old_version $1` "$VIM_VER"`new_version $1` || return 1
	cd $DIR
}

make_distribution()
{
	DIR=`pwd`;
	DIST_FILE="$DIST_DIR/$VIM_VER_LONG`new_version $1`-all.tar.bz2"
	OLD_DIST_FILE="$DIST_DIR/$VIM_VER_LONG`old_version $1`-all.tar.bz2"
	cd $SRC_DIR && \
		tar cIf $DIST_FILE "$VIM_VER"`new_version $1` && \
			chmod a+r $DIST_FILE && \
				rm -f $OLD_DIST_FILE || return 1
	cd $DIR
}

# Analyze mail from Bram (thanks to Bram for patch :-) )
# Look for version of patch.

# Check for write lock and make it!
while [ -f "$SRC_DIR/update_vim.lock" ];
do
	echo "Waiting for pid `cat $SRC_DIR/update_vim.lock`";
	sleep 60
done

echo $PID > $SRC_DIR/update_vim.lock || exit 1

TMP_FILE=`tempfile -p update_vim || mktemp /tmp/update_vimXXXXXX || echo /tmp/update_vim$$`

## Save mail to TMP_FILE
#cat > $TMP_FILE
# Save mail to /dev/null
cat > /dev/null

# XXX: OBSOLETE!!!
#NEW_PATCH=`egrep '^Patch 6\.1a\.' $TMP_FILE | awk '{print $2}'`
#if [ -z "$NEW_PATCH" ]; then
#	echo "Can't found patch number!"
#	rm -f $SRC_DIR/update_vim.lock
#	exit 1
#fi
#
#download_patch    $NEW_PATCH && \
#patch_sources     $NEW_PATCH && \
#make_distribution $NEW_PATCH && \
#xtell `id -nu` "New distribution $NEW_PATCH succeesfully created"

# Download list of avalaible patches and download it
	wget -O - $URL | awk 'BEGIN { FS=">" } {print $2}' | \
		egrep "$VIM_VER_EGREP" | sed 's/<.*//g;' > $TMP_FILE
	
	cd $SRC_DIR/patches && \
	(
		NEW_PATCHES="`ls -1| egrep \"$VIM_VER_EGREP\" | diff - $TMP_FILE | awk '{ print $2 }'`"
		if [ -z "$NEW_PATCHES" ]; then
			echo "No new patches..."
		else
			for i in `echo $NEW_PATCHES`
			do
				download_patch $i && patch_sources  $i || exit 1
			done
			# cd $SRC_DIR/vim61a && make && make install
			make_distribution $i && \
			xtell `id -nu` "New distribution $i  --  $NEW_PATCHES succeesfully created"
		fi
		
	)
	rm -f $TMP_FILE

rm -f $TMP_FILE

#remove lock
rm -f $SRC_DIR/update_vim.lock


# vim: ts=4