Masahiro Nagano > HTTP-Entity-Parser-0.05 > HTTP::Entity::Parser

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Module Version: 0.05   Source   Latest Release: HTTP-Entity-Parser-0.12

NAME ^

HTTP::Entity::Parser - PSGI compliant HTTP Entity Parser

SYNOPSIS ^

    use HTTP::Entity::Parser;
    
    my $parser = HTTP::Entity::Parser->new;
    $parser->register('application/x-www-form-urlencoded','HTTP::Entity::Parser::UrlEncoded');
    $parser->register('multipart/form-data','HTTP::Entity::Parser::MultiPart');
    $parser->register('application/json','HTTP::Entity::Parser::JSON');

    sub app {
        my $env = shift;
        my ( $params, $uploads) = $parser->parse($env);
    }

DESCRIPTION ^

HTTP::Entity::Parser is PSGI compliant HTTP Entity parser. This module also has compatibility with HTTP::Body. Unlike HTTP::Body, HTTP::Entity::Parser reads HTTP entity from PSGI's env $env->{'psgi.input'} and parse it. This module support application/x-www-form-urlencoded, multipart/form-data and application/json.

METHODS ^

new()

Create the instance.

register($content_type:String, $class:String, $opts:HashRef)

Register parser class.

  $parser->register('application/x-www-form-urlencoded','HTTP::Entity::Parser::UrlEncoded');
  $parser->register('multipart/form-data','HTTP::Entity::Parser::MultiPart');
  $parser->register('application/json','HTTP::Entity::Parser::JSON');

If the request content_type match registered type, HTTP::Entity::Parser uses registered parser class. If content_type does not match any registered type, HTTP::Entity::Parser::OctetStream is used.

parse($env:HashRef)

parse HTTP entity from PSGI's env.

  my ( $params:ArrayRef, $uploads:ArrayRef) = $parser->parse($env);

$param is key-value pair list.

   my ( $params, $uploads) = $parser->parse($env);
   my $body_parameters = Hash::MultiValue->new(@$params);

$uploads is ArrayRef of HashRef.

   my ( $params, $uploads) = $parser->parse($env);
   warn Dumper($uploads->[0]);
   {
       "name" => "upload", #field name
       "headeres" => [
           "Content-Type" => "application/octet-stream",
           "Content-Disposition" => "form-data; name=\"upload\"; filename=\"hello.pl\""           
       ],
       "size" => 78, #size of upload content
       "filename" => "hello.png", #original filename in the client
       "tempname" => "/tmp/XXXXX", # path to the temporary file where uploaded file is saved
   }

use with Plack::Request::Upload

   my ( $params, $uploads) = $parser->parse($env);
    my $upload_hmv = Hash::MultiValue->new();
    while ( my ($k,$v) = splice @$uploads, 0, 2 ) {
        my %copy = %$v;
        $copy{headers} = HTTP::Headers::Fast->new(@{$v->{headers}});
        $upload_hmv->add($k, Plack::Request::Upload->new(%copy));
    }

PARSERS ^

OctetStream

Default parser, This parser does not parse entity, always return empty list.

UrlEncoded

For application/x-www-form-urlencoded. It is used for HTTP POST without file upload

MultiPart

For multipart/form-data. It is used for HTTP POST contains file upload.

MultiPart parser use HTTP::MultiPartParser.

JSON

For application/json. This parser decode JSON body automatically.

It is convenient to use with Ajax form.

WHAT'S DIFFERENT FROM HTTP::Body ^

HTTP::Entity::Parser accept PSGI's env and read body from it.

HTTP::Entity::Parser is able to choose parsers by the instance, HTTP::Body requires to modify global variables.

SEE ALSO ^

HTTP::Body
HTTP::MultiPartParser
Plack::Request
WWW::Form::UrlEncoded

HTTP::Entity::Parser uses this for parse application/x-www-form-urlencoded

LICENSE ^

Copyright (C) Masahiro Nagano.

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

AUTHOR ^

Masahiro Nagano <kazeburo@gmail.com>

Tokuhiro Matsuno <tokuhirom@gmail.com>

This module is based on tokuhirom's code, see https://github.com/plack/Plack/pull/434

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