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<erlref>
  <header>
    <copyright>
      <year>2012</year><year>2013</year>
      <holder>Ericsson AB. All Rights Reserved.</holder>
    </copyright>
    <legalnotice>
      Licensed under the Apache License, Version 2.0 (the "License");
      you may not use this file except in compliance with the License.
      You may obtain a copy of the License at
 
          http://www.apache.org/licenses/LICENSE-2.0

      Unless required by applicable law or agreed to in writing, software
      distributed under the License is distributed on an "AS IS" BASIS,
      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      See the License for the specific language governing permissions and
      limitations under the License.

    </legalnotice>

    <title>http_uri</title>
    <prepared></prepared>
    <responsible></responsible>
    <docno></docno>
    <date></date>
    <rev></rev>
  </header>

  <module>http_uri</module>
  <modulesummary>URI utility module</modulesummary>

  <description>
    <p>This module provides utility functions for working with URIs, 
    according to RFC 3986. </p>

  </description>
  
  <section>
    <title>COMMON DATA TYPES </title>
    <p>Type definitions that are used more than once in
      this module:</p>
    <code type="none"><![CDATA[
boolean() = true | false 
string()  = list of ASCII characters 
    ]]></code>

  </section>
  
  <section>
    <title>URI DATA TYPES </title>
    <p>Type definitions that are related to URI:</p>
    <p>For more information about URI, see RFC 3986. </p>

    <code type="none"><![CDATA[
uri()       = string() - Syntax according to the URI definition in rfc 3986,
                         e.g.: "http://www.erlang.org/"
user_info() = string()
scheme()    = atom()   - Example: http, https
host()      = string()
port()      = pos_integer()
path()      = string() - Representing a file path or directory path 
query()     = string()
fragment()  = string()
    ]]></code>

    <marker id="scheme_defaults"></marker>
  </section>
  
  <funcs>
    <func>
      <name>scheme_defaults() -> SchemeDefaults</name>
      <fsummary>A list of scheme and their default ports</fsummary>
      <type>
        <v>SchemeDefaults = [{scheme(), default_scheme_port_number()}] </v> 
	<v>default_scheme_port_number() = pos_integer()</v>
      </type>
      <desc>
        <p>This function provides a list of the scheme and their default 
	port numbers currently supported (by default) by this utility. </p>

        <marker id="parse"></marker>
      </desc>
    </func>

    <func>
      <name>parse(URI) -> {ok, Result} | {error, Reason}</name>
      <name>parse(URI, Options) -> {ok, Result} | {error, Reason}</name>
      <fsummary>Parse an URI</fsummary>
      <type>
        <v>URI = uri() </v> 
        <v>Options = [Option] </v> 
        <v>Option = {ipv6_host_with_brackets, boolean()} | 
                    {scheme_defaults, scheme_defaults()} |
                    {fragment, boolean()}]</v>
        <v>Result = {Scheme, UserInfo, Host, Port, Path, Query} |
                    {Scheme, UserInfo, Host, Port, Path, Query, Fragment}</v>
	<v>UserInfo = user_info()</v>
	<v>Host = host()</v>
	<v>Port = pos_integer()</v>
	<v>Path = path()</v>
	<v>Query = query()</v>
        <v>Fragment = fragment()</v>
	<v>Reason = term() </v>
      </type>
      <desc>
        <p>This function is used to parse an URI. If no scheme defaults 
	are provided, the value of 
	<seealso marker="#scheme_defaults">scheme_defaults</seealso>
	function will be used. </p>

        <p>Note that when parsing an URI with an unknown scheme (that is, 
	a scheme not found in the scheme defaults) a port number must be 
	provided or else the parsing will fail. </p>

        <p>If the fragment option is true, the URI fragment will be returned as
          part of the parsing result, otherwise it is completely ignored.</p>

        <marker id="encode"></marker>
      </desc>
    </func>

    <func>
      <name>encode(URI) -> HexEncodedURI</name>
      
      <fsummary>Hex encode an URI</fsummary>
      <type>
        <v>URI = uri()</v>
        <v>HexEncodedURI = string() - Hex encoded uri</v>
      </type>

      <desc>
        <p>Hex encode an URI. </p>

        <marker id="decode"></marker>
      </desc>
    </func>

    <func>
      <name>decode(HexEncodedURI) -> URI</name>
      
      <fsummary>Decode a hex encoded URI</fsummary>
      <type>
        <v>HexEncodedURI = string() - A possibly hex encoded uri</v>
        <v>URI = uri()</v>
      </type>

      <desc>
        <p>Decode a possibly hex encoded URI. </p>

      </desc>
    </func>

  </funcs>

<!--
  <section>
    <title>SEE ALSO</title>
    <p>RFC 2616, <seealso marker="inets">inets(3)</seealso>,
      <seealso marker="kernel:gen_tcp">gen_tcp(3)</seealso>, 
      <seealso marker="ssl:ssl">ssl(3)</seealso>
    </p>
  </section>
-->

</erlref>
