package File::DosGlob;
-our $VERSION = '1.03';
+our $VERSION = '1.06';
use strict;
use warnings;
return @retval;
}
-
-#
-# Do DOS-like globbing on Mac OS
-#
-sub doglob_Mac {
- my $cond = shift;
- my @retval = ();
-
- #print "doglob_Mac: ", join('|', @_), "\n";
- OUTER:
- for my $arg (@_) {
- local $_ = $arg;
- my @matched = ();
- my @globdirs = ();
- my $head = ':';
- my $not_esc_head = $head;
- my $sepchr = ':';
- next OUTER unless defined $_ and $_ ne '';
- # if arg is within quotes strip em and do no globbing
- if (/^"(.*)"\z/s) {
- $_ = $1;
- # $_ may contain escaped metachars '\*', '\?' and '\'
- my $not_esc_arg = $_;
- $not_esc_arg =~ s/\\([*?\\])/$1/g;
- if ($cond eq 'd') { push(@retval, $not_esc_arg) if -d $not_esc_arg }
- else { push(@retval, $not_esc_arg) if -e $not_esc_arg }
- next OUTER;
- }
-
- if (m|^(.*?)(:+)([^:]*)\z|s) { # note: $1 is not greedy
- my $tail;
- ($head, $sepchr, $tail) = ($1,$2,$3);
- #print "div: |$head|$sepchr|$tail|\n";
- push (@retval, $_), next OUTER if $tail eq '';
- #
- # $head may contain escaped metachars '\*' and '\?'
-
- my $tmp_head = $head;
- # if a '*' or '?' is preceded by an odd count of '\', temporary delete
- # it (and its preceding backslashes), i.e. don't treat '\*' and '\?' as
- # wildcards
- $tmp_head =~ s/(\\*)([*?])/$2 x ((length($1) + 1) % 2)/eg;
-
- if ($tmp_head =~ /[*?]/) { # if there are wildcards ...
- @globdirs = doglob_Mac('d', $head);
- push(@retval, doglob_Mac($cond, map {"$_$sepchr$tail"} @globdirs)),
- next OUTER if @globdirs;
- }
-
- $head .= $sepchr;
- $not_esc_head = $head;
- # unescape $head for file operations
- $not_esc_head =~ s/\\([*?\\])/$1/g;
- $_ = $tail;
- }
- #
- # If file component has no wildcards, we can avoid opendir
-
- my $tmp_tail = $_;
- # if a '*' or '?' is preceded by an odd count of '\', temporary delete
- # it (and its preceding backslashes), i.e. don't treat '\*' and '\?' as
- # wildcards
- $tmp_tail =~ s/(\\*)([*?])/$2 x ((length($1) + 1) % 2)/eg;
-
- unless ($tmp_tail =~ /[*?]/) { # if there are wildcards ...
- $not_esc_head = $head = '' if $head eq ':';
- my $not_esc_tail = $_;
- # unescape $head and $tail for file operations
- $not_esc_tail =~ s/\\([*?\\])/$1/g;
- $head .= $_;
- $not_esc_head .= $not_esc_tail;
- if ($cond eq 'd') { push(@retval,$head) if -d $not_esc_head }
- else { push(@retval,$head) if -e $not_esc_head }
- next OUTER;
- }
- #print "opendir($not_esc_head)\n";
- opendir(D, $not_esc_head) or next OUTER;
- my @leaves = readdir D;
- closedir D;
-
- # escape regex metachars but not '\' and glob chars '*', '?'
- $_ =~ s:([].+^\-\${}[|]):\\$1:g;
- # and convert DOS-style wildcards to regex,
- # but only if they are not escaped
- $_ =~ s/(\\*)([*?])/$1 . ('.' x ((length($1) + 1) % 2)) . $2/eg;
-
- #print "regex: '$_', head: '$head', unescaped head: '$not_esc_head'\n";
- my $matchsub = eval 'sub { $_[0] =~ m|^' . $_ . '\\z|ios }';
- warn($@), next OUTER if $@;
- INNER:
- for my $e (@leaves) {
- next INNER if $e eq '.' or $e eq '..';
- next INNER if $cond eq 'd' and ! -d "$not_esc_head$e";
-
- if (&$matchsub($e)) {
- my $leave = (($not_esc_head eq ':') && (-f "$not_esc_head$e")) ?
- "$e" : "$not_esc_head$e";
- #
- # On Mac OS, the two glob metachars '*' and '?' and the escape
- # char '\' are valid characters for file and directory names.
- # We have to escape and treat them specially.
- $leave =~ s|([*?\\])|\\$1|g;
- push(@matched, $leave);
- next INNER;
- }
- }
- push @retval, @matched if @matched;
- }
- return @retval;
-}
-
-#
-# _expand_volume() will only be used on Mac OS (Classic):
-# Takes an array of original patterns as argument and returns an array of
-# possibly modified patterns. Each original pattern is processed like
-# that:
-# + If there's a volume name in the pattern, we push a separate pattern
-# for each mounted volume that matches (with '*', '?' and '\' escaped).
-# + If there's no volume name in the original pattern, it is pushed
-# unchanged.
-# Note that the returned array of patterns may be empty.
-#
-sub _expand_volume {
-
- require MacPerl; # to be verbose
-
- my @pat = @_;
- my @new_pat = ();
- my @FSSpec_Vols = MacPerl::Volumes();
- my @mounted_volumes = ();
-
- foreach my $spec_vol (@FSSpec_Vols) {
- # push all mounted volumes into array
- push @mounted_volumes, MacPerl::MakePath($spec_vol);
- }
- #print "mounted volumes: |@mounted_volumes|\n";
-
- while (@pat) {
- my $pat = shift @pat;
- if ($pat =~ /^([^:]+:)(.*)\z/) { # match a volume name?
- my $vol_pat = $1;
- my $tail = $2;
- #
- # escape regex metachars but not '\' and glob chars '*', '?'
- $vol_pat =~ s:([].+^\-\${}[|]):\\$1:g;
- # and convert DOS-style wildcards to regex,
- # but only if they are not escaped
- $vol_pat =~ s/(\\*)([*?])/$1 . ('.' x ((length($1) + 1) % 2)) . $2/eg;
- #print "volume regex: '$vol_pat' \n";
-
- foreach my $volume (@mounted_volumes) {
- if ($volume =~ m|^$vol_pat\z|ios) {
- #
- # On Mac OS, the two glob metachars '*' and '?' and the
- # escape char '\' are valid characters for volume names.
- # We have to escape and treat them specially.
- $volume =~ s|([*?\\])|\\$1|g;
- push @new_pat, $volume . $tail;
- }
- }
- } else { # no volume name in pattern, push original pattern
- push @new_pat, $pat;
- }
- }
- return @new_pat;
-}
-
#
# this can be used to override CORE::glob in a specific
# package by saying C<use File::DosGlob 'glob';> in that
#
# context (keyed by second cxix arg provided by core)
-my %iter;
my %entries;
sub glob {
my $tmp = "$start$match$end";
while ( $tmp =~ s/^(.*?)(?<!\\)\{(?:.*(?<!\\)\,)?(.*\Q$match\E.*?)(?:(?<!\\)\,.*)?(?<!\\)\}(.*)$/$1$2$3/ ) {
#print "Striped: $tmp\n";
- # these expansions will be preformed by the original,
+ # these expansions will be performed by the original,
# when we call REHASH.
}
push @appendpat, ("$tmp");
# assume global context if not provided one
$cxix = '_G_' unless defined $cxix;
- $iter{$cxix} = 0 unless exists $iter{$cxix};
# if we're just beginning, do it all first
- if ($iter{$cxix} == 0) {
- $entries{$cxix} = [doglob(1,@pat)];
- }
+ $entries{$cxix} ||= [doglob(1,@pat)];
# chuck it all out, quick or slow
if (wantarray) {
- delete $iter{$cxix};
return @{delete $entries{$cxix}};
}
else {
- if ($iter{$cxix} = scalar @{$entries{$cxix}}) {
+ if (scalar @{$entries{$cxix}}) {
return shift @{$entries{$cxix}};
}
else {
# return undef for EOL
- delete $iter{$cxix};
delete $entries{$cxix};
return undef;
}
Extending it to csh patterns is left as an exercise to the reader.
-=head1 NOTES
-
-=over 4
-
-=item *
-
-Mac OS (Classic) users should note a few differences. The specification
-of pathnames in glob patterns adheres to the usual Mac OS conventions:
-The path separator is a colon ':', not a slash '/' or backslash '\'. A
-full path always begins with a volume name. A relative pathname on Mac
-OS must always begin with a ':', except when specifying a file or
-directory name in the current working directory, where the leading colon
-is optional. If specifying a volume name only, a trailing ':' is
-required. Due to these rules, a glob like E<lt>*:E<gt> will find all
-mounted volumes, while a glob like E<lt>*E<gt> or E<lt>:*E<gt> will find
-all files and directories in the current directory.
-
-Note that updirs in the glob pattern are resolved before the matching begins,
-i.e. a pattern like "*HD:t?p::a*" will be matched as "*HD:a*". Note also,
-that a single trailing ':' in the pattern is ignored (unless it's a volume
-name pattern like "*HD:"), i.e. a glob like <:*:> will find both directories
-I<and> files (and not, as one might expect, only directories).
-
-The metachars '*', '?' and the escape char '\' are valid characters in
-volume, directory and file names on Mac OS. Hence, if you want to match
-a '*', '?' or '\' literally, you have to escape these characters. Due to
-perl's quoting rules, things may get a bit complicated, when you want to
-match a string like '\*' literally, or when you want to match '\' literally,
-but treat the immediately following character '*' as metachar. So, here's a
-rule of thumb (applies to both single- and double-quoted strings): escape
-each '*' or '?' or '\' with a backslash, if you want to treat them literally,
-and then double each backslash and your are done. E.g.
-
-- Match '\*' literally
-
- escape both '\' and '*' : '\\\*'
- double the backslashes : '\\\\\\*'
-
-(Internally, the glob routine sees a '\\\*', which means that both '\' and
-'*' are escaped.)
-
-
-- Match '\' literally, treat '*' as metachar
-
- escape '\' but not '*' : '\\*'
- double the backslashes : '\\\\*'
-
-(Internally, the glob routine sees a '\\*', which means that '\' is escaped and
-'*' is not.)
-
-Note that you also have to quote literal spaces in the glob pattern, as described
-above.
-
-=back
-
=head1 EXPORTS (by request only)
glob()
https://perl5.git.perl.org / perl5.git / blobdiff