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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 12 | ls | 1 | #!/usr/bin/env perl |
| 2 | # ============================================================================= |
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| 3 | # Create |
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| 43 | - | 4 | # name : Andre Rikkert de Koe date: Apr 2011 |
| 12 | ls | 5 | # descr : filefind |
| 6 | # This is a demo of programming in the perl language. |
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| 7 | # Its part of a project to implement a program to create a directory |
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| 8 | # tree similar to the output of the Unix find program. |
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| 9 | # Because of the example, we don't use the standard File::Find module. |
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| 10 | # EUID : Any user who has read access to all the files being searched for. |
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| 11 | # run : interactive |
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| 12 | # |
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| 13 | # Changes |
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| 14 | # name : date: |
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| 15 | # descr : short description |
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| 16 | # |
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| 17 | # ============================================================================= |
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| 18 | |||
| 19 | use File::Basename; |
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| 20 | use Cwd; |
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| 21 | |||
| 22 | # ============================================================================= |
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| 23 | # Functions |
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| 24 | # ============================================================================= |
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| 25 | |||
| 26 | sub Usage |
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| 27 | { |
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| 28 | |||
| 29 | my ($progname, $mesg) = @_; |
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| 30 | |||
| 37 | - | 31 | print "Usage: $progname directory\n"; |
| 12 | ls | 32 | print "$mesg\n" |
| 33 | } |
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| 34 | |||
| 35 | # |
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| 36 | # dir is directory to traverse |
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| 37 | # |
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| 38 | sub traverse |
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| 39 | { |
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| 40 | my ($dir) = @_; |
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| 41 | |||
| 42 | my $curdir = getcwd(); |
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| 43 | chdir($dir); |
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| 44 | my $curdir2 = getcwd(); |
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| 45 | opendir(FH, $curdir2); |
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| 46 | my @files = readdir(FH); |
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| 47 | foreach $file (@files) |
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| 48 | { |
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| 49 | my $pfile = $curdir2 . "/" . $file; |
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| 50 | if (-d $file && ! -l $file) |
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| 51 | { |
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| 52 | if ($file ne ".." && $file ne ".") |
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| 53 | { |
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| 54 | print "$pfile\n"; |
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| 55 | traverse($file) |
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| 56 | } |
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| 57 | } |
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| 58 | else |
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| 59 | { |
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| 60 | if (-f $file || -l $file) |
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| 61 | { |
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| 62 | print "$pfile\n" |
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| 63 | } |
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| 64 | else |
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| 65 | { |
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| 66 | print("WARNING: Could not process file $pfile\n") |
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| 67 | } |
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| 68 | } |
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| 69 | } |
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| 13 | ls | 70 | close(FH); |
| 12 | ls | 71 | chdir($curdir) |
| 72 | } |
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| 73 | |||
| 74 | sub start_traverse |
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| 75 | { |
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| 76 | my ($directory) = @_; |
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| 77 | |||
| 78 | print "$directory\n"; |
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| 79 | traverse($directory) |
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| 80 | } |
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| 81 | |||
| 82 | # ============================================================================= |
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| 83 | # MAIN |
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| 84 | # ============================================================================= |
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| 85 | |||
| 86 | $progname = basename($0); |
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| 87 | if ($#ARGV == 0) |
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| 88 | { |
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| 89 | $directory = $ARGV[0]; |
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| 90 | if (-d $directory) |
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| 91 | { |
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| 92 | start_traverse($directory); |
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| 93 | } |
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| 94 | else |
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| 95 | { |
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| 37 | - | 96 | Usage ($progname, "ERROR: Not a directory : $directory"); |
| 12 | ls | 97 | } |
| 98 | } |
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| 99 | else |
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| 100 | { |
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| 101 | Usage ($progname, "ERROR: 1 argument expected"); |
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| 102 | } |