phpman > perldoc > CGI::Simple::Standard(3pm)

NAME
    CGI::Simple::Standard - a wrapper module for CGI::Simple that provides a function style
    interface

SYNOPSIS
        use CGI::Simple::Standard qw( -autoload );
        use CGI::Simple::Standard qw( :core :cookie :header :misc );
        use CGI::Simple::Standard qw( param upload );

        $CGI::Simple::Standard::POST_MAX = 1024;       # max upload via post 1kB
        $CGI::Simple::Standard::DISABLE_UPLOADS = 0;   # enable uploads

        @params = param();        # return all param names as a list
        $value =  param('foo');   # return the first value supplied for 'foo'
        @values = param('foo');   # return all values supplied for foo

        %fields   = Vars();       # returns untied key value pair hash
        $hash_ref = Vars();       # or as a hash ref
        %fields   = Vars("|");    # packs multiple values with "|" rather than "\0";

        @keywords = keywords();   # return all keywords as a list

        param( 'foo', 'some', 'new', 'values' );        # set new 'foo' values
        param( -name=>'foo', -value=>'bar' );
        param( -name=>'foo', -value=>['bar','baz'] );

        append( -name=>'foo', -value=>'bar' );          # append values to 'foo'
        append( -name=>'foo', -value=>['some', 'new', 'values'] );

        Delete('foo');   # delete param 'foo' and all its values
        Delete_all();    # delete everything

        <INPUT TYPE="file" NAME="upload_file" SIZE="42">

        $files    = upload()                   # number of files uploaded
        @files    = upload();                  # names of all uploaded files
        $filename = param('upload_file')       # filename of 'upload_file' field
        $mime     = upload_info($filename,'mime'); # MIME type of uploaded file
        $size     = upload_info($filename,'size'); # size of uploaded file

        my $fh = $q->upload($filename);     # open filehandle to read from
        while ( read( $fh, $buffer, 1024 ) ) { ... }

        # short and sweet upload
        $ok = upload( param('upload_file'), '/path/to/write/file.name' );
        print "Uploaded ".param('upload_file')." and wrote it OK!" if $ok;

        $decoded    = url_decode($encoded);
        $encoded    = url_encode($unencoded);
        $escaped    = escapeHTML('<>"&');
        $unescaped  = unescapeHTML('&lt;&gt;&quot;&amp;');

        $qs = query_string();   # get all data in $q as a query string OK for GET

        no_cache(1);            # set Pragma: no-cache + expires
        print header();         # print a simple header
        # get a complex header
        $header = header(   -type       => 'image/gif'
                            -nph        => 1,
                            -status     => '402 Payment required',
                            -expires    =>'+24h',
                            -cookie     => $cookie,
                            -charset    => 'utf-7',
                            -attachment => 'foo.gif',
                            -Cost       => '$2.00');

        @cookies = cookie();        # get names of all available cookies
        $value   = cookie('foo')    # get first value of cookie 'foo'
        @value   = cookie('foo')    # get all values of cookie 'foo'
        # get a cookie formatted for header() method
        $cookie  = cookie(  -name    => 'Password',
                            -values  => ['superuser','god','my dog woofie'],
                            -expires => '+3d',
                            -domain  => '.nowhere.com',
                            -path    => '/cgi-bin/database',
                            -secure  => 1 );
        print header( -cookie=>$cookie );       # set cookie

        print redirect('http://go.away.now');   # print a redirect header

        dienice( cgi_error() ) if cgi_error();

DESCRIPTION
    This module is a wrapper for the completely object oriented CGI::Simple module and provides a
    simple functional style interface. It provides two different methods to import function names
    into your namespace.

  Autoloading
    If you specify the '-autoload' pragma like this:

        use CGI::Simple::Standard qw( -autoload );

    Then it will use AUTOLOAD and a symbol table trick to export only those subs you actually call
    into your namespace. When you specify the '-autoload' pragma this module exports a single
    AUTOLOAD subroutine into you namespace. This will clash with any AUTOLOAD sub that exists in the
    calling namespace so if you are using AUTOLOAD for something else don't use this pragma.

    Anyway, when you call a subroutine that is not defined in your script this AUTOLOAD sub will be
    called. The first time this happens it will initialize a CGI::Simple object and then apply the
    requested method (if it exists) to it. A fatal exception will be thrown if you try to use an
    undefined method (function).

  Specified Export
    Alternatively you can specify the functions you wish to import. You can do this on a per
    function basis like this:

        use CGI::Simple::Standard qw( param upload query_string Dump );

    or utilize the %EXPORT_TAGS that group functions into related groups. Here are the groupings:

      %EXPORT_TAGS = (
        ':html'     => [ qw(:misc) ],
        ':standard' => [ qw(:core :access) ],
        ':cgi'      => [ qw(:core :access) ],
        ':all'      => [ qw(:core :misc :cookie :header :push :debug :cgi-lib
                            :access :internal) ],
        ':core'     => [ qw(param add_param param_fetch url_param keywords
                            append Delete delete_all Delete_all upload
                            query_string parse_query_string  parse_keywordlist
                            Vars save_parameters restore_parameters) ],
        ':misc'     => [ qw(url_decode url_encode escapeHTML unescapeHTML put) ],
        ':cookie'   => [ qw(cookie raw_cookie) ],
        ':header'   => [ qw(header cache no_cache redirect) ],
        ':push'     => [ qw(multipart_init multipart_start multipart_end
                            multipart_final) ],
        ':debug'    => [ qw(Dump as_string cgi_error _cgi_object) ],
        ':cgi-lib'  => [ qw(ReadParse SplitParam MethGet MethPost MyBaseUrl MyURL
                            MyFullUrl PrintHeader HtmlTop HtmlBot PrintVariables
                            PrintEnv CgiDie CgiError Vars) ],
        ':ssl'      => [ qw(https) ],
        ':access'   => [ qw(version nph all_parameters charset crlf globals
                            auth_type content_length content_type document_root
                            gateway_interface path_translated referer remote_addr
                            remote_host remote_ident remote_user request_method
                            script_name server_name server_port server_protocol
                            server_software user_name user_agent virtual_host
                            path_info Accept http https protocol url self_url
                            state) ],
        ':internal' => [ qw(_initialize_globals _use_cgi_pm_global_settings
                            _store_globals _reset_globals) ]
        );

    The familiar CGI.pm tags are available but do not include the HTML functionality. You specify
    the import of some function groups like this:

    use CGI::Simple::Standard qw( :core :cookie :header );

    Note that the function groups all start with a : char.

  Mix and Match
    You can use the '-autoload' pragma, specifically named function imports and tag group imports
    together if you desire.

$POST_MAX and $DISABLE_UPLOADS
    If you wish to set $POST_MAX or $DISABLE_UPLOADS you must do this *after* the use statement and
    *before* the first function call as shown in the synopsis.

    Unlike CGI.pm uploads are disabled by default and the maximum acceptable data via post is capped
    at 102_400kB rather than infinity. This is specifically to avoid denial of service attacks by
    default. To enable uploads and to allow them to be of infinite size you simply:

        $CGI::Simple::Standard::POST_MAX = -1;         # infinite size upload
        $CGI::Simple::Standard::$DISABLE_UPLOADS = 0;  # enable uploads

    Alternatively you can specify the CGI.pm default values as shown above by specifying the
    '-default' pragma in your use statement.

        use CGI::Simple::Standard qw( -default ..... );

EXPORT
    Nothing by default.

    Under the '-autoload' pragma the AUTOLOAD subroutine is exported into the calling namespace.
    Additional subroutines are only imported into this namespace if you physically call them. They
    are installed in the symbol table the first time you use them to save repeated calls to
    AUTOLOAD.

    If you specifically request a function or group of functions via an EXPORT_TAG then stubs of
    these functions are exported into the calling namespace. These stub functions will be replaced
    with the real functions only if you actually call them saving wasted compilation effort.

FUNCTION DETAILS
    This is a wrapper module for CGI::Simple. Virtually all the methods available in the OO
    interface are available via the functional interface. Several method names are aliased to
    prevent namespace conflicts:

        $q->delete('foo')   =>  Delete('foo')
        $q->delete_all      =>  Delete_all() or delete_all()
        $q->save(\*FH)      =>  save_parameters(\*FH)
        $q->accept()        =>  Accept()

    Although you could use the new() function to genrate new OO CGI::Simple objects the
    restore_parameters() function is a better choice as it operates like new but on the correct
    underlying CGI::Simple object for the functional interface.

    restore_parameters() can be used exactly as you might use new() in that you can supply arguments
    to it such as query strings, hashes and file handles to re-initialize your underlying object.

        $q->new CGI::Simple()                => restore_parameters()
        $q->new CGI::Simple({foo=>'bar'})    => restore_parameters({foo=>'bar'})
        $q->new CGI::Simple($query_string)   => restore_parameters($query_string)
        $q->new CGI::Simple(\*FH)            => restore_parameters(\*FH)

    For full details of the available functions see the CGI::Simple docs. Just remove the $q-> part
    and use the method name directly.

BUGS
    As this is 0.01 there are almost bound to be some.

AUTHOR
    Dr James Freeman <jfreeman AT tassie.au> This release by Andy Armstrong <andy AT hexten.net>

    This package is free software and is provided "as is" without express or implied warranty. It
    may be used, redistributed and/or modified under the terms of the Perl Artistic License (see
    http://www.perl.com/perl/misc/Artistic.html)

    Address bug reports and comments to: andy AT hexten.net

CREDITS
    The interface and key sections of the CGI::Simple code come from CGI.pm by Lincoln Stein.

SEE ALSO
    CGI::Simple which is the back end for this module, CGI.pm by Lincoln Stein