53 lines
927 B
Perl
Executable File
53 lines
927 B
Perl
Executable File
#!/usr/bin/perl -w
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use strict;
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use warnings;
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my $numarg = $#ARGV + 1;
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if ($numarg < 2) {
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print "Usage: str_replace Search Replace File\nOr: STDIN str_replace Search Replace\n";
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exit 1;
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}
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my $find=$ARGV[0];
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my $replace=$ARGV[1];
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my $file;
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my $contents;
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my $found=0;
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my $fh;
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if(defined $ARGV[2]){
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$file=$ARGV[2];
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open($fh, '<', $file) or die "Cannot open the file '$file'";
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{
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local $/;
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$contents = <$fh>;
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}
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close($fh);
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}
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else{
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{
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local $/;
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$contents = <STDIN>;
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}
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}
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my $pos = index($contents, $find);
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while ( $pos > -1 ) {
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if(substr( $contents, $pos, length( $find ), $replace )){$found =$found+1;}
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$pos = index( $contents, $find, $pos + length( $replace ));
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}
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if(!defined $ARGV[2]){
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print $contents;
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exit;
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}
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if($found==0) {print "Nothing replaced\n";}
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else{ print "$found occurrences of '$find' have been replaced with '$replace'\n";}
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open($fh, '>', $file);
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print $fh $contents;
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close $fh;
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