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Annotation of misc/strmode/perl_strmode.pl, Revision 1.1

1.1     ! andrew      1: #!/usr/bin/perl -T
        !             2:
        !             3: # $AFresh1$
        !             4: #
        !             5: # Copyright (c) 2011 Andrew Fresh <andrew@afresh1.com>
        !             6: #
        !             7: # Permission to use, copy, modify, and distribute this software for any
        !             8: # purpose with or without fee is hereby granted, provided that the above
        !             9: # copyright notice and this permission notice appear in all copies.
        !            10: #
        !            11: # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
        !            12: # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
        !            13: # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
        !            14: # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
        !            15: # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
        !            16: # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
        !            17: # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
        !            18:
        !            19: use warnings;
        !            20: use strict;
        !            21: use 5.010;
        !            22:
        !            23: use Fcntl ':mode';
        !            24:
        !            25: sub strmode {
        !            26:
        !            27:     # Perl port of OpenBSD: lib/libc/string/strmode.c,v 1.7
        !            28:     # by Andrew Fresh <andrew@afresh1.com>
        !            29:
        !            30:     my ($mode) = @_;
        !            31:     my $p = '';
        !            32:
        !            33:     # print type
        !            34:     given ( $mode & S_IFMT ) {
        !            35:         when (S_IFDIR)  { $p .= 'd' }    # directory
        !            36:         when (S_IFCHR)  { $p .= 'c' }    # character special
        !            37:         when (S_IFBLK)  { $p .= 'b' }    # block special
        !            38:         when (S_IFREG)  { $p .= '-' }    # regular
        !            39:         when (S_IFLNK)  { $p .= 'l' }    # symbolic link
        !            40:         when (S_IFSOCK) { $p .= 's' }    # socket
        !            41:
        !            42:         #ifdef S_IFIFO XXX How important is this ifdef?
        !            43:         when (S_IFIFO) { $p .= 'p' }     # fifo
        !            44:
        !            45:         #endif
        !            46:         default { $p .= '?' }            # unknown
        !            47:     }
        !            48:
        !            49:     # usr
        !            50:     $p .= ( $mode & S_IRUSR ) ? 'r' : '-';
        !            51:     $p .= ( $mode & S_IWUSR ) ? 'w' : '-';
        !            52:     given ( $mode & ( S_IXUSR | S_ISUID ) ) {
        !            53:         when (0)                   { $p .= '-' }
        !            54:         when (S_IXUSR)             { $p .= 'x' }
        !            55:         when (S_ISUID)             { $p .= 'S' }
        !            56:         when ( S_IXUSR | S_ISUID ) { $p .= 's' }
        !            57:     }
        !            58:
        !            59:     # group
        !            60:     $p .= ( $mode & S_IRGRP ) ? 'r' : '-';
        !            61:     $p .= ( $mode & S_IWGRP ) ? 'w' : '-';
        !            62:     given ( $mode & ( S_IXGRP | S_ISGID ) ) {
        !            63:         when (0)                   { $p .= '-' }
        !            64:         when (S_IXGRP)             { $p .= 'x' }
        !            65:         when (S_ISGID)             { $p .= 'S' }
        !            66:         when ( S_IXGRP | S_ISGID ) { $p .= 's' }
        !            67:     }
        !            68:
        !            69:     # other
        !            70:     $p .= ( $mode & S_IROTH ) ? 'r' : '-';
        !            71:     $p .= ( $mode & S_IWOTH ) ? 'w' : '-';
        !            72:     given ( $mode & ( S_IXOTH | S_ISVTX ) ) {
        !            73:         when (0)                   { $p .= '-' }
        !            74:         when (S_IXOTH)             { $p .= 'x' }
        !            75:         when (S_ISVTX)             { $p .= 'T' }
        !            76:         when ( S_IXOTH | S_ISVTX ) { $p .= 't' }
        !            77:     }
        !            78:     $p .= ' ';    # will be a '+' if ACL's implemented
        !            79:
        !            80:     return $p;
        !            81: }
        !            82:
        !            83: my @files = @ARGV;
        !            84: @files = '.' unless @files;
        !            85:
        !            86: foreach my $file (@files) {
        !            87:     next unless -e $file;
        !            88:     my ( $mode, $nlink, $uid, $gid, $size, $mtime )
        !            89:         = ( stat(_) )[ 2 .. 5, 7, 9 ];
        !            90:
        !            91:     my $time = localtime($mtime);
        !            92:     $time =~ s/^\w+\s+//;
        !            93:
        !            94:     printf "%s %2s %-7s %-7s %8d %s %s\n",
        !            95:         strmode($mode),
        !            96:         $nlink,
        !            97:         ( getpwuid($uid) )[0],
        !            98:         ( getgrgid($gid) )[0],
        !            99:         $size, $time, $file;
        !           100: }