Moved CGI.pm to UCW namespace.

diff --git a/lib/perl/CGI.pm b/lib/perl/CGI.pm
new file mode 100644 (file)
index 0000000..abff1d8
--- /dev/null
+++ b/lib/perl/CGI.pm
@@ -0,0 +1,129 @@
+#      Poor Man's CGI Module for Perl
+#
+#      (c) 2002 Martin Mares <mj@ucw.cz>
+#      Slightly modified by Tomas Valla <tom@ucw.cz>
+#
+#      This software may be freely distributed and used according to the terms
+#      of the GNU Lesser General Public License.
+
+package UCW::CGI;
+
+use strict;
+use warnings;
+
+BEGIN {
+       # The somewhat hairy Perl export mechanism
+       use Exporter();
+       our ($VERSION, @ISA, @EXPORT, @EXPORT_OK, %EXPORT_TAGS);
+       $VERSION = 1.0;
+       @ISA = qw(Exporter);
+       @EXPORT = qw(&html_escape &url_escape &self_ref &self_form);
+       @EXPORT_OK = qw();
+       %EXPORT_TAGS = ();
+}
+
+sub url_escape($) {
+       my $x = shift @_;
+       $x =~ s/([^-\$_.!*'(),0-9A-Za-z\x80-\xff])/"%".unpack('H2',$1)/ge;
+       return $x;
+}
+
+sub html_escape($) {
+       my $x = shift @_;
+       $x =~ s/&/&amp;/g;
+       $x =~ s/</&lt;/g;
+       $x =~ s/>/&gt;/g;
+       $x =~ s/"/&quot;/g;
+       return $x;
+}
+
+our $arg_table;
+
+sub parse_arg_string($) {
+       my ($s) = @_;
+       $s =~ s/\s+//;
+       foreach $_ (split /[&:]/,$s) {
+               (/^([^=]+)=(.*)$/) or next;
+               my $arg = $arg_table->{$1} or next;
+               $_ = $2;
+               s/\+/ /g;
+               s/%(..)/pack("c",hex $1)/eg;
+               s/(\r|\n|\t)/ /g;
+               s/^\s+//;
+               s/\s+$//;
+               if (my $rx = $arg->{'check'}) {
+                       if (!/^$rx$/) { $_ = $arg->{'default'}; }
+               }
+
+               my $r = ref($arg->{'var'});
+               if ($r eq 'SCALAR') {
+                       ${$arg->{'var'}} = $_;
+               } elsif ($r eq 'ARRAY') {
+                       push @{$arg->{'var'}}, $_;
+               }
+       }
+}
+
+sub parse_args($) {
+       $arg_table = shift @_;
+       foreach my $a (values %$arg_table) {
+               my $r = ref($a->{'var'});
+               defined($a->{'default'}) or $a->{'default'}="";
+               if ($r eq 'SCALAR') {
+                       ${$a->{'var'}} = $a->{'default'};
+               } elsif ($r eq 'ARRAY') {
+                       @{$a->{'var'}} = ();
+               }
+       }
+       defined $ENV{"GATEWAY_INTERFACE"} or die "Not called as a CGI script";
+       my $method = $ENV{"REQUEST_METHOD"};
+       if ($method eq "GET") {
+               parse_arg_string($ENV{"QUERY_STRING"});
+       } elsif ($method eq "POST") {
+               if ($ENV{"CONTENT_TYPE"} =~ /^application\/x-www-form-urlencoded\b/i) {
+                       while (<STDIN>) {
+                               chomp;
+                               parse_arg_string($_);
+                       }
+               } else {
+                       return "Unknown content type for POST data";
+               }
+       } else {
+               return "Unknown request method";
+       }
+}
+
+sub make_out_args($) {
+       my ($overrides) = @_;
+       my $out = {};
+       foreach my $name (keys %$arg_table) {
+               my $arg = $arg_table->{$name};
+               defined $arg->{'pass'} && !$arg->{'pass'} && !exists $overrides->{$name} && next;
+               my $value;
+               if (!defined($value = $overrides->{$name})) {
+                       if (exists $overrides->{$name}) {
+                               $value = $arg->{'default'};
+                       } else {
+                               $value = ${$arg->{'var'}};
+                       }
+               }
+               if ($value ne $arg->{'default'}) {
+                       $out->{$name} = $value;
+               }
+       }
+       return $out;
+}
+
+sub self_ref(@) {
+       my %h = @_;
+       my $out = make_out_args(\%h);
+       return "?" . join(':', map { "$_=" . url_escape($out->{$_}) } sort keys %$out);
+}
+
+sub self_form(@) {
+       my %h = @_;
+       my $out = make_out_args(\%h);
+       return join('', map { "<input type=hidden name=$_ value='" . html_escape($out->{$_}) . "'>\n" } sort keys %$out);
+}
+
+1;  # OK