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43 lines
1.2 KiB
43 lines
1.2 KiB
#!/usr/bin/perl -w
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#
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# This perl script replaces a string with another string
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# on a token basis. Here it is allowed for file_in and
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# file_out to be the same file.
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#
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use strict;
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#
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my $g_use_msg =
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"Use: token-replace.pl find_token replacement_token file_in file_out\n";
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if( scalar(@ARGV) < 4 ) {
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print STDERR $g_use_msg;
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exit(-1);
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}
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#
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my $find_token = shift;
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my $replacement_token = shift;
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my $file_in_name = shift;
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my $file_out_name = shift;
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#
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#print "file_in_name = $file_in_name\n";
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if($file_in_name=~/CVS/) {
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# print "Do not replace in CVS\n";
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exit;
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}
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open FILE_IN, "<$file_in_name" || die "The file $file_in_name could not be opended for input\n";
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my @file_in_array = <FILE_IN>;
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close FILE_IN;
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#
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my $match_str = '([^\w\d_]|^)' . $find_token . '([^\w\d_]|$)';
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#print $match_str . "\n";
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#
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my @file_out_array;
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my $did_replacement = 0;
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foreach(@file_in_array) {
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$did_replacement = 1 if $_=~s/$match_str/$1$replacement_token$2/g;
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push @file_out_array, $_;
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}
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if($did_replacement || $file_out_name ne $file_in_name) {
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open FILE_OUT, ">$file_out_name" || die "The file $file_out_name could not be opended for output\n";
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print FILE_OUT @file_out_array;
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close FILE_OUT;
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}
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