WWW::Form::UrlEncoded - parser and builder for application/x-www-form-urlencoded

NAME  SYNOPSIS  DESCRIPTION  Parser rules  Test data  FUNCTION  ENVIRONMENT VALUE  SEE ALSO  LICENSE  AUTHOR 

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NAME

WWW::Form::UrlEncoded − parser and builder for application/x−www−form−urlencoded

SYNOPSIS

use WWW::Form::UrlEncoded qw/parse_urlencoded build_urlencoded/;
my $query_string = "foo=bar&baz=param";
my @params = parse_urlencoded($query_string);
# ('foo','bar','baz','param')
my $query_string = build_urlencoded('foo','bar','baz','param');
# "foo=bar&baz=param";

DESCRIPTION

WWW::Form::UrlEncoded provides application/x−www−form−urlencoded parser and builder. This module aims to have compatibility with other CPAN modules like HTTP::Body’s urlencoded parser.

This module try to use WWW::Form::UrlEncoded::XS by default and fail to it, use WWW::Form::UrlEncoded::PP instead

Parser rules

WWW::Form::UrlEncoded parsed string in this rule.
1. Split application/x−www−form−urlencoded payload by "&" (U+0026) or
";" (U+003B)
2. Ready empty array to store "name" and "value"
3. For each divided string, apply next steps.

1. If first character of string is ' ' (U+0020 SPACE), remove it.
2. If string has "=", let name be substring from start to first
"=", but excluding first "=", and remains to be value. If there is
no strings after first "=", value to be empty string "". If first
"=" is first character of the string, let key be empty string "".
If string does not have any "=", all of the string to be key and
value to be empty string "".
3. replace all "+" (U+002B) with ' ' (U+0020 SPACE).
4. unescape name and value. push them to the array.

4. return the array.

Test data

'a=b&c=d' => ["a","b","c","d"]
'a=b;c=d' => ["a","b","c","d"]
'a=1&b=2;c=3' => ["a","1","b","2","c","3"]
'a==b&c==d' => ["a","=b","c","=d"]
'a=b& c=d' => ["a","b","c","d"]
'a=b; c=d' => ["a","b","c","d"]
'a=b; c =d' => ["a","b","c ","d"]
'a=b;c= d ' => ["a","b","c"," d "]
'a=b&+c=d' => ["a","b"," c","d"]
'a=b&+c+=d' => ["a","b"," c ","d"]
'a=b&c=+d+' => ["a","b","c"," d "]
'a=b&%20c=d' => ["a","b"," c","d"]
'a=b&%20c%20=d' => ["a","b"," c ","d"]
'a=b&c=%20d%20' => ["a","b","c"," d "]
'a&c=d' => ["a","","c","d"]
'a=b&=d' => ["a","b","","d"]
'a=b&=' => ["a","b","",""]
'&' => ["","","",""]
'=' => ["",""]
'' => []

FUNCTION

@param = parse_urlencoded($str:String)

parse $str and return Array that contains key-value pairs.

$param:ArrayRef = parse_urlencoded_arrayref($str:String)

parse $str and return ArrayRef that contains key-value pairs.

$string = build_urlencoded(@param)
$string = build_urlencoded(@param, $delim)
$string = build_urlencoded(\@param)
$string = build_urlencoded(\@param, $delim)
$string = build_urlencoded(\%param)
$string = build_urlencoded(\%param, $delim)

build urlencoded string from param. build_urlencoded accepts arrayref and hashref values.

build_urlencoded( foo => 1, foo => 2);
build_urlencoded( foo => [1,2] );
build_urlencoded( [ foo => 1, foo => 2 ] );
build_urlencoded( [foo => [1,2]] );
build_urlencoded( {foo => [1,2]} );

If $delim parameter is passed, this function use it instead of using "&".

$string = build_urlencoded_utf8(...)

This function is almost same as "build_urlencoded". build_urlencoded_utf8 call "utf8::encode" for all parameters.

ENVIRONMENT VALUE

•

WWW_FORM_URLENCODED_PP

If true, WWW::Form::UrlEncoded force to load WWW::Form::UrlEncoded::PP.

SEE ALSO

CPAN already has some application/x−www−form−urlencoded parser modules like these.
URL::Encode
URL::Encode::XS
Text::QueryString

They does not fully compatible with WWW::Form::UrlEncoded. Handling of empty key-value and supporting separator characters are different.

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 <[email protected]>

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