wmi-1.3.16 from opsview.com
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Executable
+150
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#!/usr/bin/perl -w
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# find a list of #include lines in C code that might not be needed
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# usually called with something like this:
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# minimal_includes.pl `find . -name "*.c"`
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# Andrew Tridgell <tridge@samba.org>
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use strict;
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use Data::Dumper;
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use Getopt::Long;
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my $opt_help = 0;
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my $opt_remove = 0;
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#####################################################################
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# write a string into a file
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sub FileSave($$)
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{
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my($filename) = shift;
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my($v) = shift;
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local(*FILE);
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open(FILE, ">$filename") || die "can't open $filename";
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print FILE $v;
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close(FILE);
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}
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sub load_lines($)
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{
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my $fname = shift;
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my @lines = split(/^/m, `cat $fname`);
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return @lines;
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}
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sub save_lines($$)
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{
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my $fname = shift;
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my $lines = shift;
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my $data = join('', @{$lines});
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FileSave($fname, $data);
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}
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sub test_compile($)
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{
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my $fname = shift;
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my $obj;
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if ($fname =~ s/(.*)\.c$/$1.o/) {
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$obj = "$1.o";
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} else {
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return "NOT A C FILE";
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}
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unlink($obj);
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my $ret = `make $obj 2>&1`;
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if (!unlink("$obj")) {
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return "COMPILE FAILED";
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}
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return $ret;
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}
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sub test_include($$$$)
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{
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my $fname = shift;
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my $lines = shift;
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my $i = shift;
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my $original = shift;
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my $line = $lines->[$i];
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$lines->[$i] = "";
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save_lines("_testcompile.c", $lines);
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my $out = test_compile("_testcompile.c");
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$out =~ s/_testcompile.c/$fname/g;
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if ($out eq $original) {
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if ($opt_remove) {
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print "$fname: removing $line\n";
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save_lines($fname, $lines);
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return;
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}
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print "$fname: might be able to remove $line\n";
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}
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$lines->[$i] = $line;
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unlink("_testcompile.c");
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}
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sub process_file($)
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{
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my $fname = shift;
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my @lines = load_lines($fname);
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my $num_lines = $#lines;
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my $original = test_compile($fname);
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if ($original eq "COMPILE FAILED") {
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print "Failed to compile $fname\n";
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return;
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}
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print "Processing $fname (with $num_lines lines)\n";
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my $if_level = 0;
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for (my $i=0;$i<=$num_lines;$i++) {
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my $line = $lines[$i];
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if ($line =~ /^\#\s*if/) {
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$if_level++;
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}
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if ($line =~ /^\#\s*endif/) {
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$if_level--;
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}
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if ($if_level == 0 &&
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$line =~ /^\#\s*include/ &&
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!($line =~ /needed/)) {
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test_include($fname, \@lines, $i, $original);
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}
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}
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}
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#########################################
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# display help text
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sub ShowHelp()
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{
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print "
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minimise includes
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Copyright (C) tridge\@samba.org
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Usage: minimal_includes.pl [options] <C files....>
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Options:
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--help show help
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--remove remove includes, don't just list them
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";
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}
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# main program
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GetOptions (
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'h|help|?' => \$opt_help,
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'remove' => \$opt_remove,
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);
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if ($opt_help) {
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ShowHelp();
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exit(0);
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}
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for (my $i=0;$i<=$#ARGV;$i++) {
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my $fname = $ARGV[$i];
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process_file($fname);
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}
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