source: utils/applyrename @ 7

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#
#  TOPPERS Software
#      Toyohashi Open Platform for Embedded Real-Time Systems
# 
#  Copyright (C) 2003 by Embedded and Real-Time Systems Laboratory
#                              Toyohashi Univ. of Technology, JAPAN
#  Copyright (C) 2004-2011 by Embedded and Real-Time Systems Laboratory
#              Graduate School of Information Science, Nagoya Univ., JAPAN
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#  @(#) $Id$
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#
sub applyrename
{
        local($infile) = @_;
        local($outfile) = $infile.".new";
        local($line);

        open(INFILE, "< ".$infile) || die;
        open(OUTFILE, "> ".$outfile) || die;

        while ($line = <INFILE>) {
                $line =~ s/\b(_?)($syms)\b/$1_kernel_$2/gc;
                print OUTFILE $line;
        }

        close(INFILE);
        close(OUTFILE);

        if (`cmp $infile $outfile`) {
                rename($infile, $infile.".bak");
                rename($outfile, $infile);
                print STDERR "Modified: ",$infile,"\n";
        }
        else {
                unlink($outfile);
        }
}

#
#  ¥š¥é¡Œ¥Á¥§¥Ã¥¯
#
if ($#ARGV < 1) {
        die "Usage: appyrename <prefix> <filelist>\n";
}

#
#  œéŽü²œ
#
@syms = ();
$name = $ARGV[0];

#
#  ¥·¥ó¥Ü¥ë¥ê¥¹¥È€òÆɀ߹þ€à
#
$deffile = $name."_rename.def";
open(INFILE, $deffile) || die "Cannot open $deffile";
while ($line = <INFILE>) {
        chomp $line;
        if ($line =~ /^#(.*)$/) {
                # do nothing
        }
        elsif ($line =~ /^INCLUDE[ \t]+(.*)$/) {
                # do nothing
        }
        elsif ($line ne "") {
                @syms = (@syms, $line)
        }
}
close(INFILE);

#
#  Àµµ¬Éœžœ€òºî€ë
#
$syms = join("|", @syms);

#
#  ¥Õ¥¡¥€¥ë€Ë¥ê¥Í¡Œ¥à€òŬÍÑ€¹€ë
#
shift @ARGV;
foreach $infile (@ARGV) {
        # ¥Õ¥¡¥€¥ë€Ç€Ê€±€ì€Ð¥¹¥­¥Ã¥×
        next unless (-f $infile);

        applyrename($infile) if ($infile ne $deffile);
}