1Simple::Standard(3) User Contributed Perl Documentation Simple::Standard(3)
2
6 CGI::Simple::Standard - a wrapper module for CGI::Simple that provides
7 a function style interface
8
10 use CGI::Simple::Standard qw( -autoload );
11 use CGI::Simple::Standard qw( :core :cookie :header :misc );
12 use CGI::Simple::Standard qw( param upload );
13 $CGI::Simple::Standard::POST_MAX = 1024; # max upload via post 1kB
15 $CGI::Simple::Standard::DISABLE_UPLOADS = 0; # enable uploads
16 @params = param(); # return all param names as a list
18 $value = param('foo'); # return the first value supplied for 'foo'
19 @values = param('foo'); # return all values supplied for foo
20 %fields = Vars(); # returns untied key value pair hash
22 $hash_ref = Vars(); # or as a hash ref
23 %fields = Vars("⎪"); # packs multiple values with "⎪" rather than "\0";
24 @keywords = keywords(); # return all keywords as a list
26 param( 'foo', 'some', 'new', 'values' ); # set new 'foo' values
28 param( -name=>'foo', -value=>'bar' );
29 param( -name=>'foo', -value=>['bar','baz'] );
30 append( -name=>'foo', -value=>'bar' ); # append values to 'foo'
32 append( -name=>'foo', -value=>['some', 'new', 'values'] );
33 Delete('foo'); # delete param 'foo' and all its values
35 Delete_all(); # delete everything
36 <INPUT TYPE="file" NAME="upload_file" SIZE="42">
38 $files = upload() # number of files uploaded
40 @files = upload(); # names of all uploaded files
41 $filename = param('upload_file') # filename of 'upload_file' field
42 $mime = upload_info($filename,'mime'); # MIME type of uploaded file
43 $size = upload_info($filename,'size'); # size of uploaded file
44 my $fh = $q->upload($filename); # open filehandle to read from
46 while ( read( $fh, $buffer, 1024 ) ) { ... }
47 # short and sweet upload
49 $ok = upload( param('upload_file'), '/path/to/write/file.name' );
50 print "Uploaded ".param('upload_file')." and wrote it OK!" if $ok;
51 $decoded = url_decode($encoded);
53 $encoded = url_encode($unencoded);
54 $escaped = escapeHTML('<>"&');
55 $unescaped = unescapeHTML('<>"&');
56 $qs = query_string(); # get all data in $q as a query string OK for GET
58 no_cache(1); # set Pragma: no-cache + expires
60 print header(); # print a simple header
61 # get a complex header
62 $header = header( -type => 'image/gif'
63 -nph => 1,
64 -status => '402 Payment required',
65 -expires =>'+24h',
66 -cookie => $cookie,
67 -charset => 'utf-7',
68 -attachment => 'foo.gif',
69 -Cost => '$2.00');
70 @cookies = cookie(); # get names of all available cookies
72 $value = cookie('foo') # get first value of cookie 'foo'
73 @value = cookie('foo') # get all values of cookie 'foo'
74 # get a cookie formatted for header() method
75 $cookie = cookie( -name => 'Password',
76 -values => ['superuser','god','my dog woofie'],
77 -expires => '+3d',
78 -domain => '.nowhere.com',
79 -path => '/cgi-bin/database',
80 -secure => 1 );
81 print header( -cookie=>$cookie ); # set cookie
82 print redirect('http://go.away.now'); # print a redirect header
84 dienice( cgi_error() ) if cgi_error();
86
88 This module is a wrapper for the completely object oriented CGI::Simple
89 module and provides a simple functional style interface. It provides
90 two different methods to import function names into your namespace.
91 Autoloading
93 If you specify the '-autoload' pragma like this:
95 use CGI::Simple::Standard qw( -autoload );
97 Then it will use AUTOLOAD and a symbol table trick to export only those
99 subs you actually call into your namespace. When you specify the
100 '-autoload' pragma this module exports a single AUTOLOAD subroutine
101 into you namespace. This will clash with any AUTOLOAD sub that exists
102 in the calling namespace so if you are using AUTOLOAD for something
103 else don't use this pragma.
104 Anyway, when you call a subroutine that is not defined in your script
106 this AUTOLOAD sub will be called. The first time this happens it will
107 initialize a CGI::Simple object and then apply the requested method (if
108 it exists) to it. A fatal exception will be thrown if you try to use an
109 undefined method (function).
110 Specified Export
112 Alternatively you can specify the functions you wish to import. You can
114 do this on a per function basis like this:
115 use CGI::Simple::Standard qw( param upload query_string Dump );
117 or utilize the %EXPORT_TAGS that group functions into related groups.
119 Here are the groupings:
120 %EXPORT_TAGS = (
122 ':html' => [ qw(:misc) ],
123 ':standard' => [ qw(:core :access) ],
124 ':cgi' => [ qw(:core :access) ],
125 ':all' => [ qw(:core :misc :cookie :header :push :debug :cgi-lib
126 :access :internal) ],
127 ':core' => [ qw(param add_param param_fetch url_param keywords
128 append Delete delete_all Delete_all upload
129 query_string parse_query_string parse_keywordlist
130 Vars save_parameters restore_parameters) ],
131 ':misc' => [ qw(url_decode url_encode escapeHTML unescapeHTML put) ],
132 ':cookie' => [ qw(cookie raw_cookie) ],
133 ':header' => [ qw(header cache no_cache redirect) ],
134 ':push' => [ qw(multipart_init multipart_start multipart_end
135 multipart_final) ],
136 ':debug' => [ qw(Dump as_string cgi_error _cgi_object) ],
137 ':cgi-lib' => [ qw(ReadParse SplitParam MethGet MethPost MyBaseUrl MyURL
138 MyFullUrl PrintHeader HtmlTop HtmlBot PrintVariables
139 PrintEnv CgiDie CgiError Vars) ],
140 ':ssl' => [ qw(https) ],
141 ':access' => [ qw(version nph all_parameters charset crlf globals
142 auth_type content_length content_type document_root
143 gateway_interface path_translated referer remote_addr
144 remote_host remote_ident remote_user request_method
145 script_name server_name server_port server_protocol
146 server_software user_name user_agent virtual_host
147 path_info Accept http https protocol url self_url
148 state) ],
149 ':internal' => [ qw(_initialize_globals _use_cgi_pm_global_settings
150 _store_globals _reset_globals) ]
151 );
152 The familiar CGI.pm tags are available but do not include the HTML
154 functionality. You specify the import of some function groups like
155 this:
156 use CGI::Simple::Standard qw( :core :cookie :header );
158 Note that the function groups all start with a : char.
160 Mix and Match
162 You can use the '-autoload' pragma, specifically named function imports
164 and tag group imports together if you desire.
165
167 If you wish to set $POST_MAX or $DISABLE_UPLOADS you must do this
168 *after* the use statement and *before* the first function call as shown
169 in the synopsis.
170 Unlike CGI.pm uploads are disabled by default and the maximum accept‐
172 able data via post is capped at 102_400kB rather than infinity. This is
173 specifically to avoid denial of service attacks by default. To enable
174 uploads and to allow them to be of infinite size you simply:
175 $CGI::Simple::Standard::POST_MAX = -1; # infinite size upload
177 $CGI::Simple::Standard::$DISABLE_UPLOADS = 0; # enable uploads
178 Alternatively you can specify the CGI.pm default values as shown above
180 by specifying the '-default' pragma in your use statement.
181 use CGI::Simple::Standard qw( -default ..... );
183
185 Nothing by default.
186 Under the '-autoload' pragma the AUTOLOAD subroutine is exported into
188 the calling namespace. Additional subroutines are only imported into
189 this namespace if you physically call them. They are installed in the
190 symbol table the first time you use them to save repeated calls to
191 AUTOLOAD.
192 If you specifically request a function or group of functions via an
194 EXPORT_TAG then stubs of these functions are exported into the calling
195 namespace. These stub functions will be replaced with the real func‐
196 tions only if you actually call them saving wasted compilation effort.
197
199 This is a wrapper module for CGI::Simple. Virtually all the methods
200 available in the OO interface are available via the functional inter‐
201 face. Several method names are aliased to prevent namespace conflicts:
202 $q->delete('foo') => Delete('foo')
204 $q->delete_all => Delete_all() or delete_all()
205 $q->save(\*FH) => save_parameters(\*FH)
206 $q->accept() => Accept()
207 Although you could use the new() function to genrate new OO CGI::Simple
209 objects the restore_parameters() function is a better choice as it
210 operates like new but on the correct underlying CGI::Simple object for
211 the functional interface.
212 restore_parameters() can be used exactly as you might use new() in that
214 you can supply arguments to it such as query strings, hashes and file
215 handles to re-initialize your underlying object.
216 $q->new CGI::Simple() => restore_parameters()
218 $q->new CGI::Simple({foo=>'bar'}) => restore_parameters({foo=>'bar'})
219 $q->new CGI::Simple($query_string) => restore_parameters($query_string)
220 $q->new CGI::Simple(\*FH) => restore_parameters(\*FH)
221 For full details of the available functions see the CGI::Simple docs.
223 Just remove the $q-> part and use the method name directly.
224
226 As this is 0.01 there are almost bound to be some.
227
229 Dr James Freeman <jfreeman@tassie.net.au>
230 This package is free software and is provided "as is" without express
232 or implied warranty. It may be used, redistributed and/or modified
233 under the terms of the Perl Artistic License (see
234 http://www.perl.com/perl/misc/Artistic.html)
235
237 The interface and key sections of the CGI::Simple code come from CGI.pm
238 by Lincoln Stein.
239
241 "CGI::Simple which is the back end for this module", CGI.pm by Lincoln
242 Stein
243perl v5.8.8 2004-11-22 Simple::Standard(3)