#!/bin/bash

ref_dir_def=build.saved/xml
this_proc=$(basename $0)

usage () {
	echo "Usage : $this_proc [-v] [-d] [-p profile] [ref_profile_dir]"
	echo ""
	echo "\tref_profile_dir specified the directory where are stored reference"
	echo "\tprofiles (D: build.saved/xml)."
	echo ""
	echo "\t-d : compare dependency files too"
	echo "\t-p profile : compare only the specified profile (without .xml)"
	echo "\t-t : terse output (show only the configuration differences"
	echo "       without context, RPM differences ignored)"
	echo "\t-v : verbose output (show differences)"
	echo ""
	exit
}

verbose=0
profile='*'
check_dep_files=0
terse_output=0

while [ -n "$(echo $1 | grep '^-')" ]
do
	case "$1" in
		-d|--dep*)
			check_dep_files=1
			;;
			
		-h|--help)
			usage
			;;
			
		-v|--ver*)
			verbose=1
			;;
			
		-p|--pro*)
			shift
			if [ -z "$1" ]
			then
				usage
			fi
			profile=$1
			;;
			
	  -t|--terse)
	    terse_output=1
	    ;;
			
		*)
			echo "Unsupported option : $1"
			usage
			;;
	esac
	
	shift
done

if [ -n "$1" ]
then
	ref_dir=$1
else
	ref_dir=$ref_dir_def
fi

xml_dir=build/xml

if [ $check_dep_files -eq 1 ]
then
	file_pattern="${profile}.xml.dep"
	echo "Comparing dependency files ($file_pattern)..."

	files=`find $xml_dir -name "$file_pattern"`
	for file in $files
	do
  		filename=$(basename $file)
  		out1="/tmp/${this_proc}.out1"
  		sort $file > $out1
  		out2="/tmp/${this_proc}.out2"
  		sort $ref_dir/$filename > $out2
  		xmldiff=`diff $out2 $out1`
  		if [ $? -ne 0 ]
  		then
    		echo Differences found in $file
    		if [ $verbose -gt 0 ]
    		then
    			diff -u $out2 $out1
    			echo ""
    		fi
  		fi
	done
fi

file_pattern="${profile}.xml"
echo ""
echo "Comparing XML files ($file_pattern)..."

files=$(find $xml_dir -name "$file_pattern" -not -name profiles-info.xml)
for file in $files
do
 	#echo $file
  	xmldiff=`diff $ref_dir $file`
  	if [ $? -ne 0 ]
  	then
    	echo Differences found in $file
    	if [ $verbose -gt 0 ]
    	then
    		diff -u $ref_dir $file
    		echo ""
   	  elif [ $terse_output -eq 1 ]
    	then
    		diff -u $ref_dir $file | egrep '^-|\+' | grep -v version | \
    	               egrep -v '^(-|\+)</*[0-9a-f_]*>$' | grep -v '^@@.*@@$'
    	  echo ""
    	fi
  	fi
done