#!/bin/bash
#
# Checks source code and data for potential problems.
# Meant to be executed before submitting/committing.


SELF=${0/#*\/}

# optional apps
RLE=$(which rle &>/dev/null)              # http://members.aon.at/mfranz/rle.tar.gz (depends on Qt lib)
AC3D_SCAN=$(which ac3d-scan 2>/dev/null)  # http://members.aon.at/mfranz/ac3d-scan


function ERROR  { echo -e "\e[31;1m$*\e[m";   }
function LOG    { echo -e "\e[35m$*\e[m";     }
function RESULT { echo -e "\t$*";             }


TMP=$(mktemp -d -t $SELF.XXX) || (echo "$0: can't create temporary dir"; exit 1)
trap "rm -rf $TMP" 0 1 2 3 13 15


LOG "checking for spaces in filenames ..."
find .|grep " "|while read i; do RESULT "$i"; done


LOG "checking for upper-case extensions ..."
find .|while read i; do
	case "$i" in .|..|CVS/*|*/CVS/*|*.Opt|*.README|*.Po|*.TXT) continue ;; esac
	base=${i/#.*\/}
	ext=${base/#*./}
	[ "$base" == "$ext" ] && continue          # has no extension
	ext=${ext//[^a-zA-Z]/}
	[ "$ext" ] || continue                     # only non-letters
	lcext=$(echo $ext|sed -e 's,\(.*\),\L\1,')
	[ "$ext" != "$lcext" ] && RESULT "$i"
done


LOG "checking for DOS line endings ..."
find . -type f|while read i; do
	desc=$(file -b "$i")
	case "$desc" in *text*)
		grep "
$" "$i" >/dev/null && RESULT "$i"
		;;
	esac
done


LOG "checking for uncompressed textures ..."
find . -iname \*.rgb -o -iname \*.rgba|while read i; do
	if file "$i"|grep -v RLE >/dev/null; then
		new=$TMP/sgi.rgb
		convert "$i" -compress RLE sgi:$new
		[ -x "$RLE" ] && $RLE $new 2>/dev/null
		perl -e '
			my $file = shift;
			my $old = -s $file;
			my $new = -s shift;
			if ($new < $old) {
				printf "\t$file:  could be %0.02f%% of current size (%d bytes less)\n",
						100 * $new / $old, $old - $new;
			}
		' "$i" $new
	fi
done


if [ -x "$AC3D_SCAN" ]; then
	LOG "checking for AC3D sanity ..."
	find . -iname \*.ac|while read i; do
		case "$i" in configure.ac|*/configure.ac) continue ;; esac
		result=$($AC3D_SCAN <$i 2>&1)
		[ "$result" ] && echo -e "$result\n\t... in file \e[36m$i\e[m";
	done
fi


LOG "checking for XML syntax ..."
find . -name \*.xml|while read i; do
	xmllint $i >/dev/null || RESULT "... in file \e[36m$i\e[m"
done


LOG "checking for 'if (foo) delete foo;' ..."
find . -iregex ".*\.\([ch]\(xx\|pp\)\|cc\|h\)$"|while read i; do perl -e '
	my $i = 0;
	my $name = $ARGV[0];
	undef $/;
	$_ = <>;
	s/(if\s*\(([^\)]+)\)\s*delete(?:\s+|\s*\[\]\s*)\2\s*;)/print "$1\n" and $i++/ges;
	print "\t... \033[36min file $name\033[m\n" if $i;
' "$i"; done