> >

#!/bin/sh

# Copyright (C) 2006 OKAMURA Yuji, All rights reserved.

#### function definition
function usage () {
	local	progname=`$basename $0`

	cat <<EOF >&2
Usage:
    $progname localSiteDir baseURL [sitemap-filename]
EOF
}

function normalizeDirPath () {
	local dirpath="$1"
	local matched=`expr "$dirpath" : '\(.*\)/$'`

	if [ "$matched" != '' ]; then
		echo "$matched"
	else
		echo "$dirpath"
	fi
}

function regexpStr () {
	local	str="$1"

	echo "$str" | sed 's/\//\\\//g;s/\./\\./g'
}

function onCatchSignal () {
	$rm -f "$TempFile"
	exit 3
}

#### command path definition
mv=/bin/mv
rm=/bin/rm
find=/usr/bin/find
sed=/usr/bin/sed
diff=/usr/bin/diff
basename=/usr/bin/basename

#### main
######## processing arguments
if [ $# -lt 2 -o $# -gt 3 ]; then
	usage
	exit 1
fi

LocalDir=`normalizeDirPath "$1"`
BaseURL=`normalizeDirPath "$2"`
BaseURL=`regexpStr "$BaseURL"`
SitemapFile="$3"
if [ "$SitemapFile" == '' ]; then
	SitemapFile=sitemap.txt
fi
SitemapFile="$LocalDir/$SitemapFile"

######## global parameters
TempFile="/tmp/sitemap_${LOGNAME}_$$.txt"

######## generate sitemap file
trap onCatchSignal SIGHUP SIGINT SIGQUIT SIGABRT SIGTERM
(
	cd "$LocalDir" || exit 2
	$find . -type f -name '*.html' -print |\
	$sed "s/^\.\//$BaseURL\//"
) > "$TempFile"

######## update sitemap file
if [ \! -f "$SitemapFile" ]; then
	$mv "$TempFile" "$SitemapFile"
elif $diff "$SitemapFile" "$TempFile">/dev/null; then
	$rm "$TempFile"
else
	$mv "$TempFile" "$SitemapFile"
fi