/usr/share/perl5/CGI/Pretty.pm is in libcgi-pm-perl 3.58+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 | package CGI::Pretty;
# See the bottom of this file for the POD documentation. Search for the
# string '=head'.
# You can run this file through either pod2man or pod2html to produce pretty
# documentation in manual or html file format (these utilities are part of the
# Perl 5 distribution).
use strict;
use CGI ();
$CGI::Pretty::VERSION = '3.46';
$CGI::DefaultClass = __PACKAGE__;
$CGI::Pretty::AutoloadClass = 'CGI';
@CGI::Pretty::ISA = qw( CGI );
initialize_globals();
sub _prettyPrint {
my $input = shift;
return if !$$input;
return if !$CGI::Pretty::LINEBREAK || !$CGI::Pretty::INDENT;
# print STDERR "'", $$input, "'\n";
foreach my $i ( @CGI::Pretty::AS_IS ) {
if ( $$input =~ m{</$i>}si ) {
my ( $a, $b, $c ) = $$input =~ m{(.*)(<$i[\s/>].*?</$i>)(.*)}si;
next if !$b;
$a ||= "";
$c ||= "";
_prettyPrint( \$a ) if $a;
_prettyPrint( \$c ) if $c;
$b ||= "";
$$input = "$a$b$c";
return;
}
}
$$input =~ s/$CGI::Pretty::LINEBREAK/$CGI::Pretty::LINEBREAK$CGI::Pretty::INDENT/g;
}
sub comment {
my($self,@p) = CGI::self_or_CGI(@_);
my $s = "@p";
$s =~ s/$CGI::Pretty::LINEBREAK/$CGI::Pretty::LINEBREAK$CGI::Pretty::INDENT/g if $CGI::Pretty::LINEBREAK;
return $self->SUPER::comment( "$CGI::Pretty::LINEBREAK$CGI::Pretty::INDENT$s$CGI::Pretty::LINEBREAK" ) . $CGI::Pretty::LINEBREAK;
}
sub _make_tag_func {
my ($self,$tagname) = @_;
# As Lincoln as noted, the last else clause is VERY hairy, and it
# took me a while to figure out what I was trying to do.
# What it does is look for tags that shouldn't be indented (e.g. PRE)
# and makes sure that when we nest tags, those tags don't get
# indented.
# For an example, try print td( pre( "hello\nworld" ) );
# If we didn't care about stuff like that, the code would be
# MUCH simpler. BTW: I won't claim to be a regular expression
# guru, so if anybody wants to contribute something that would
# be quicker, easier to read, etc, I would be more than
# willing to put it in - Brian
my $func = qq"
sub $tagname {";
$func .= q'
shift if $_[0] &&
(ref($_[0]) &&
(substr(ref($_[0]),0,3) eq "CGI" ||
UNIVERSAL::isa($_[0],"CGI")));
my($attr) = "";
if (ref($_[0]) && ref($_[0]) eq "HASH") {
my(@attr) = make_attributes(shift()||undef,1);
$attr = " @attr" if @attr;
}';
if ($tagname=~/start_(\w+)/i) {
$func .= qq!
return "<\L$1\E\$attr>\$CGI::Pretty::LINEBREAK";} !;
} elsif ($tagname=~/end_(\w+)/i) {
$func .= qq!
return "<\L/$1\E>\$CGI::Pretty::LINEBREAK"; } !;
} else {
$func .= qq#
return ( \$CGI::XHTML ? "<\L$tagname\E\$attr />" : "<\L$tagname\E\$attr>" ) .
\$CGI::Pretty::LINEBREAK unless \@_;
my(\$tag,\$untag) = ("<\L$tagname\E\$attr>","</\L$tagname>\E");
my \%ASIS = map { lc("\$_") => 1 } \@CGI::Pretty::AS_IS;
my \@args;
if ( \$CGI::Pretty::LINEBREAK || \$CGI::Pretty::INDENT ) {
if(ref(\$_[0]) eq 'ARRAY') {
\@args = \@{\$_[0]}
} else {
foreach (\@_) {
\$args[0] .= \$_;
\$args[0] .= \$CGI::Pretty::LINEBREAK if \$args[0] !~ /\$CGI::Pretty::LINEBREAK\$/ && 0;
chomp \$args[0] if exists \$ASIS{ "\L$tagname\E" };
\$args[0] .= \$" if \$args[0] !~ /\$CGI::Pretty::LINEBREAK\$/ && 1;
}
chop \$args[0] unless \$" eq "";
}
}
else {
\@args = ref(\$_[0]) eq 'ARRAY' ? \@{\$_[0]} : "\@_";
}
my \@result;
if ( exists \$ASIS{ "\L$tagname\E" } ) {
\@result = map { "\$tag\$_\$untag" } \@args;
}
else {
\@result = map {
chomp;
my \$tmp = \$_;
CGI::Pretty::_prettyPrint( \\\$tmp );
\$tag . \$CGI::Pretty::LINEBREAK .
\$CGI::Pretty::INDENT . \$tmp . \$CGI::Pretty::LINEBREAK .
\$untag . \$CGI::Pretty::LINEBREAK
} \@args;
}
if (\$CGI::Pretty::LINEBREAK || \$CGI::Pretty::INDENT) {
return join ("", \@result);
} else {
return "\@result";
}
}#;
}
return $func;
}
sub start_html {
return CGI::start_html( @_ ) . $CGI::Pretty::LINEBREAK;
}
sub end_html {
return CGI::end_html( @_ ) . $CGI::Pretty::LINEBREAK;
}
sub new {
my $class = shift;
my $this = $class->SUPER::new( @_ );
if ($CGI::MOD_PERL) {
if ($CGI::MOD_PERL == 1) {
my $r = Apache->request;
$r->register_cleanup(\&CGI::Pretty::_reset_globals);
}
else {
my $r = Apache2::RequestUtil->request;
$r->pool->cleanup_register(\&CGI::Pretty::_reset_globals);
}
}
$class->_reset_globals if $CGI::PERLEX;
return bless $this, $class;
}
sub initialize_globals {
# This is the string used for indentation of tags
$CGI::Pretty::INDENT = "\t";
# This is the string used for seperation between tags
$CGI::Pretty::LINEBREAK = $/;
# These tags are not prettify'd.
# When this list is updated, also update the docs.
@CGI::Pretty::AS_IS = qw( a pre code script textarea td );
1;
}
sub _reset_globals { initialize_globals(); }
# ugly, but quick fix
sub import {
my $self = shift;
no strict 'refs';
${ "$self\::AutoloadClass" } = 'CGI';
# This causes modules to clash.
undef %CGI::EXPORT;
undef %CGI::EXPORT;
$self->_setup_symbols(@_);
my ($callpack, $callfile, $callline) = caller;
# To allow overriding, search through the packages
# Till we find one in which the correct subroutine is defined.
my @packages = ($self,@{"$self\:\:ISA"});
foreach my $sym (keys %CGI::EXPORT) {
my $pck;
my $def = ${"$self\:\:AutoloadClass"} || $CGI::DefaultClass;
foreach $pck (@packages) {
if (defined(&{"$pck\:\:$sym"})) {
$def = $pck;
last;
}
}
*{"${callpack}::$sym"} = \&{"$def\:\:$sym"};
}
}
1;
=head1 NAME
CGI::Pretty - module to produce nicely formatted HTML code
=head1 SYNOPSIS
use CGI::Pretty qw( :html3 );
# Print a table with a single data element
print table( TR( td( "foo" ) ) );
=head1 DESCRIPTION
CGI::Pretty is a module that derives from CGI. It's sole function is to
allow users of CGI to output nicely formatted HTML code.
When using the CGI module, the following code:
print table( TR( td( "foo" ) ) );
produces the following output:
<TABLE><TR><TD>foo</TD></TR></TABLE>
If a user were to create a table consisting of many rows and many columns,
the resultant HTML code would be quite difficult to read since it has no
carriage returns or indentation.
CGI::Pretty fixes this problem. What it does is add a carriage
return and indentation to the HTML code so that one can easily read
it.
print table( TR( td( "foo" ) ) );
now produces the following output:
<TABLE>
<TR>
<TD>foo</TD>
</TR>
</TABLE>
=head2 Recommendation for when to use CGI::Pretty
CGI::Pretty is far slower than using CGI.pm directly. A benchmark showed that
it could be about 10 times slower. Adding newlines and spaces may alter the
rendered appearance of HTML. Also, the extra newlines and spaces also make the
file size larger, making the files take longer to download.
With all those considerations, it is recommended that CGI::Pretty be used
primarily for debugging.
=head2 Tags that won't be formatted
The following tags are not formatted: <a>, <pre>, <code>, <script>, <textarea>, and <td>.
If these tags were formatted, the
user would see the extra indentation on the web browser causing the page to
look different than what would be expected. If you wish to add more tags to
the list of tags that are not to be touched, push them onto the C<@AS_IS> array:
push @CGI::Pretty::AS_IS,qw(XMP);
=head2 Customizing the Indenting
If you wish to have your own personal style of indenting, you can change the
C<$INDENT> variable:
$CGI::Pretty::INDENT = "\t\t";
would cause the indents to be two tabs.
Similarly, if you wish to have more space between lines, you may change the
C<$LINEBREAK> variable:
$CGI::Pretty::LINEBREAK = "\n\n";
would create two carriage returns between lines.
If you decide you want to use the regular CGI indenting, you can easily do
the following:
$CGI::Pretty::INDENT = $CGI::Pretty::LINEBREAK = "";
=head1 AUTHOR
Brian Paulsen <Brian@ThePaulsens.com>, with minor modifications by
Lincoln Stein <lstein@cshl.org> for incorporation into the CGI.pm
distribution.
Copyright 1999, Brian Paulsen. All rights reserved.
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
Bug reports and comments to Brian@ThePaulsens.com. You can also write
to lstein@cshl.org, but this code looks pretty hairy to me and I'm not
sure I understand it!
=head1 SEE ALSO
L<CGI>
=cut
|