delete unnecessary #include lines

1 files changed, 48 insertions, 0 deletions

diff --git a/cuth b/cuth
new file mode 100755
index 0000000..cce8c0c
--- /dev/null
+++ b/cuth
@@ -0,0 +1,48 @@
+#!/usr/bin/perl
+
+$| = 1;
+
+sub writefile($@){
+	my ($file, @lines) = @_;
+	
+	sleep(1);
+	open(F, ">$file") || die "open >$file: $!";
+	print F @lines;
+	close(F);
+}
+
+# Cut out #include lines that don't contribute anything.
+for($i=0; $i<@ARGV; $i++){
+	$file = $ARGV[$i];
+	if(!open(F, $file)){
+		print STDERR "open $file: $!\n";
+		next;
+	}
+	@lines = <F>;
+	close(F);
+	
+	$obj = "$file.o";
+	$obj =~ s/\.c\.o$/.o/;
+	system("touch $file");
+
+	if(system("make CC='gcc -Werror' $obj >/dev/null 2>\&1") != 0){
+		print STDERR "make $obj failed: $rv\n";
+		next;
+	}
+
+	system("cp $file =$file");
+	for($j=@lines-1; $j>=0; $j--){
+		if($lines[$j] =~ /^#include/){
+			$old = $lines[$j];
+			$lines[$j] = "/* CUT-H */\n";
+			writefile($file, @lines);
+			if(system("make CC='gcc -Werror' $obj >/dev/null 2>\&1") != 0){
+				$lines[$j] = $old;
+			}else{
+				print STDERR "$file $old";
+			}
+		}
+	}
+	writefile($file, grep {!/CUT-H/} @lines);
+	system("rm =$file");
+}