#!perl -w # use strict fails #Can't use string ("main::glob") as a symbol ref while "strict refs" in use at /usr/lib/perl5/5.005/File/DosGlob.pm line 191. # # Documentation at the __END__ # package File::DosGlob; our $VERSION = '1.04'; use strict; use warnings; sub doglob { my $cond = shift; my @retval = (); my $fix_drive_relative_paths; #print "doglob: ", join('|', @_), "\n"; OUTER: for my $pat (@_) { my @matched = (); my @globdirs = (); my $head = '.'; my $sepchr = '/'; my $tail; next OUTER unless defined $pat and $pat ne ''; # if arg is within quotes strip em and do no globbing if ($pat =~ /^"(.*)"\z/s) { $pat = $1; if ($cond eq 'd') { push(@retval, $pat) if -d $pat } else { push(@retval, $pat) if -e $pat } next OUTER; } # wildcards with a drive prefix such as h:*.pm must be changed # to h:./*.pm to expand correctly if ($pat =~ m|^([A-Za-z]:)[^/\\]|s) { substr($pat,0,2) = $1 . "./"; $fix_drive_relative_paths = 1; } if ($pat =~ m|^(.*)([\\/])([^\\/]*)\z|s) { ($head, $sepchr, $tail) = ($1,$2,$3); #print "div: |$head|$sepchr|$tail|\n"; push (@retval, $pat), next OUTER if $tail eq ''; if ($head =~ /[*?]/) { @globdirs = doglob('d', $head); push(@retval, doglob($cond, map {"$_$sepchr$tail"} @globdirs)), next OUTER if @globdirs; } $head .= $sepchr if $head eq '' or $head =~ /^[A-Za-z]:\z/s; $pat = $tail; } # # If file component has no wildcards, we can avoid opendir unless ($pat =~ /[*?]/) { $head = '' if $head eq '.'; $head .= $sepchr unless $head eq '' or substr($head,-1) eq $sepchr; $head .= $pat; if ($cond eq 'd') { push(@retval,$head) if -d $head } else { push(@retval,$head) if -e $head } next OUTER; } opendir(D, $head) or next OUTER; my @leaves = readdir D; closedir D; $head = '' if $head eq '.'; $head .= $sepchr unless $head eq '' or substr($head,-1) eq $sepchr; # escape regex metachars but not glob chars $pat =~ s:([].+^\-\${}()[|]):\\$1:g; # and convert DOS-style wildcards to regex $pat =~ s/\*/.*/g; $pat =~ s/\?/.?/g; #print "regex: '$pat', head: '$head'\n"; my $matchsub = sub { $_[0] =~ m|^$pat\z|is }; INNER: for my $e (@leaves) { next INNER if $e eq '.' or $e eq '..'; next INNER if $cond eq 'd' and ! -d "$head$e"; push(@matched, "$head$e"), next INNER if &$matchsub($e); # # [DOS compatibility special case] # Failed, add a trailing dot and try again, but only # if name does not have a dot in it *and* pattern # has a dot *and* name is shorter than 9 chars. # if (index($e,'.') == -1 and length($e) < 9 and index($pat,'\\.') != -1) { push(@matched, "$head$e"), next INNER if &$matchsub("$e."); } } push @retval, @matched if @matched; } if ($fix_drive_relative_paths) { s|^([A-Za-z]:)\./|$1| for @retval; } return @retval; } # # this can be used to override CORE::glob in a specific # package by saying C in that # namespace. # # context (keyed by second cxix arg provided by core) my %iter; my %entries; sub glob { my($pat,$cxix) = @_; my @pat; # glob without args defaults to $_ $pat = $_ unless defined $pat; # extract patterns if ($pat =~ /\s/) { require Text::ParseWords; @pat = Text::ParseWords::parse_line('\s+',0,$pat); } else { push @pat, $pat; } # Mike Mestnik: made to do abc{1,2,3} == abc1 abc2 abc3. # abc3 will be the original {3} (and drop the {}). # abc1 abc2 will be put in @appendpat. # This was just the esiest way, not nearly the best. REHASH: { my @appendpat = (); for (@pat) { # There must be a "," I.E. abc{efg} is not what we want. while ( /^(.*)(?; # from the command line (overrides only in main::) > perl -MFile::DosGlob=glob -e "print <../pe*/*p?>" =head1 DESCRIPTION A module that implements DOS-like globbing with a few enhancements. It is largely compatible with perlglob.exe (the M$ setargv.obj version) in all but one respect--it understands wildcards in directory components. For example, C<<..\\l*b\\file/*glob.p?>> will work as expected (in that it will find something like '..\lib\File/DosGlob.pm' alright). Note that all path components are case-insensitive, and that backslashes and forward slashes are both accepted, and preserved. You may have to double the backslashes if you are putting them in literally, due to double-quotish parsing of the pattern by perl. Spaces in the argument delimit distinct patterns, so C globs all filenames that end in C<.exe> or C<.dll>. If you want to put in literal spaces in the glob pattern, you can escape them with either double quotes, or backslashes. e.g. C, or C. The argument is tokenized using C, so see L for details of the quoting rules used. Extending it to csh patterns is left as an exercise to the reader. =head1 EXPORTS (by request only) glob() =head1 BUGS Should probably be built into the core, and needs to stop pandering to DOS habits. Needs a dose of optimizium too. =head1 AUTHOR Gurusamy Sarathy =head1 HISTORY =over 4 =item * Support for globally overriding glob() (GSAR 3-JUN-98) =item * Scalar context, independent iterator context fixes (GSAR 15-SEP-97) =item * A few dir-vs-file optimizations result in glob importation being 10 times faster than using perlglob.exe, and using perlglob.bat is only twice as slow as perlglob.exe (GSAR 28-MAY-97) =item * Several cleanups prompted by lack of compatible perlglob.exe under Borland (GSAR 27-MAY-97) =item * Initial version (GSAR 20-FEB-97) =back =head1 SEE ALSO perl perlglob.bat Text::ParseWords =cut