зеркало из https://github.com/mozilla/gecko-dev.git
83 строки
1.6 KiB
Perl
Executable File
83 строки
1.6 KiB
Perl
Executable File
#! /bin/perl
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########################################################################
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#
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# /u/sonmi/bin/path_uniq
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#
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# this script makes components of a PATH like string unique cand prints
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# it to stdout
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#
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# parameters
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# ----------
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# PATH
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#
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# options
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# -------
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# -d delimiter - default :
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#
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# usefull enhancements: in the usage part, try to guess what was meant as
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# a path and echo it to stdout to not break for PATHs with blanks
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#
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########################################################################
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sub usage {
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print STDERR "usage $0 [-d <delimiter>] PATH\n";
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print STDERR " this script makes components of the PATH unique, if you\n";
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print STDERR " pass in a searchpath A:B:C:A:B:E it will print A:B:C:E to\n";
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print STDERR " the stdout\n";
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print STDERR " the parameters you gave were: ";
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for ( $i = 0; $i <= $#ARGV; $i++ ) {
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print STDERR " $ARGV[$i]\n";
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}
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exit ;
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}
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$i = 0;
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$j = 0;
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$delimiter = ":";
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$searchpath = "";
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@pathcomponents;
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$found=0;
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$newpath="";
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if ( $ARGV[0] eq '-d' ) {
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if ( $#ARGV != 2 ) {
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usage;
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}
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$delimiter = $ARGV[1];
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$searchpath = $ARGV[2];
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} else {
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if ( $#ARGV != 0 ) {
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usage;
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}
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$searchpath = $ARGV[0];
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}
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@pathcomponents=split($delimiter, $searchpath);
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for ( $i = 0; $i <= $#pathcomponents; $i++ ) {
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$found=0;
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for ( $j = 0; $j < $i; $j++ ) {
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if ( $pathcomponents[$j] eq $pathcomponents[$i] ) {
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#print "$i and $j match - $pathcomponents[$i] - $pathcomponents[$j]\n";
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$found=1;
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last;
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}
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}
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if ( $found == 0 ) {
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#print "$pathcomponents[$i]:";
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if ($i == 0) {
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$newpath = $pathcomponents[$i];
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} else {
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$newpath=join($delimiter, $newpath,$pathcomponents[$i]);
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}
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}
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}
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print "$newpath\n";
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exit;
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