#! /bin/sh
# $Id$

v=true
if [ "$1" = "-q" ];then
	v=false
	shift
fi
changelog=""
if [ "$1" = "-n" ];then
	changelog="$1"
	shift
fi

function formatpatch
{
	# --- src/gdb/ChangeLog   2008/04/24 08:46:17     1.9308
	diffdecvs | if [ -z "$changelog" ];then perl -p -e '$r=qr/^(?:---|\Q+++\E) /o;$c=0 if m{$r}o;$c=1 if s{$r(?=\S+/ChangeLog(?:\t|$))}{### }o;s{^@@}{##} if $c;'; else cat; fi
}

if [ "$*" = "-f" ];then
	formatpatch
else for arg in "$@";do
	arg="$(echo "$arg"|sed 's/^https:/http:/')"
	# http://sourceware.org/ml/gdb-cvs/2099-99/msg99999.html
	if [ "$arg" != "${arg#http://sources.redhat.com/}" ];then
		arg="http://sourceware.org/${arg#http://sources.redhat.com/}"
	fi
	if [ "$arg" != "${arg#http://sourceware.org/ml/*-cvs/}" -a "$arg" != "${arg%.html}" ];then
		echo >&2 -n '+'
		echo "$arg"
		echo
		changelogget -q $changelog $(wget -q -O - "$arg" | sed -n -e 's/&amp;/\&/g' -e 's#^<a \+\(rel="nofollow"\)\? *href="\(.*\)">\2</a>$#\2#p')
	elif [ "$arg" != "${arg#http://gcc.gnu.org/viewcvs[?]view=revision&revision=}" ];then
		echo >&2 -n '+'
		echo "$arg"
		echo
		changelogget -q $changelog $(wget -q -O - "$arg" | sed -n -e 's/&amp;/\&/g' -e 's#^.*<a href="\(/viewcvs/[^">]*\)"[^>]*>text changed<.*$#http://gcc.gnu.org\1#p')
	elif [ "$arg" != "${arg#http://sourceware.org/ml/}" -a "$arg" != "${arg%.html}" ];then
		echo >&2 -n '#'
		echo "$arg"
		raw="$(wget -q -O - "$arg" | sed -n 's#^.*<a href="\(/cgi-bin/get-raw-msg[?][^"]*\)">Raw text</a>.*$#\1#p')"
		if [ -z "$raw" ];then
			echo >&2 "No raw URL found: $arg"
			exit 1
		fi
		wget -q -O - "http://sourceware.org$raw" | sed -n -e '/^Subject:/p' -e '/^$/,$p'
	elif [ "$arg" != "${arg#http://sourceware.org/cgi-bin/cvsweb.cgi/src/}" ];then
		echo >&2 -n '.'
		wget -q -O - "$arg" | formatpatch
	# http://gcc.gnu.org/viewcvs/trunk/ChangeLog?r1=154127&r2=154126&pathrev=154127
	elif [ "$arg" != "${arg#http://gcc.gnu.org/viewcvs/}" ];then
		echo >&2 -n '.'
		wget -q -O - "$arg&view=patch" | formatpatch
	else
		echo >&2 "Invalid URL: $arg"
		exit 1
	fi
done;fi
if $v;then
	echo >&2 OK
fi