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RE: Charsets, encodings, http-request, unescape-markup, and convenience, oh my!

From: <vojtech.toman@emc.com>
Date: Tue, 11 Oct 2011 10:30:59 -0400
To: <public-xml-processing-model-comments@w3.org>
Message-ID: <3799D0FD120AD940B731A37E36DAF3FE33DAE9FA1E@MX20A.corp.emc.com>
> I was thinking about an extension to support this when it occurred to
> me that it can be done in standard XProc. I think. Anyone see any
> problems with this:
> 
> <p:declare-step xmlns:p="http://www.w3.org/ns/xproc" version="1.0"
> 		xmlns:c="http://www.w3.org/ns/xproc-step"
>                 xmlns:l="http://xproc.org/library"
>                 type="l:http-get">
>   <p:output port="result"/>
>   <p:option name="href" required="true"/>
>   <p:option name="username"/>
>   <p:option name="password"/>
>   <p:option name="auth-method" select="'Basic'"/>
>   <p:option name="send-authorization" select="'false'"/>
>   <p:option name="override-content-type"/>
> 
>   <p:choose>
>     <p:when test="p:value-available('username')">
>       <p:template>
>         <p:input port="template">
>           <p:inline>
>             <c:request method="get" href="{$href}" detailed="false"
> status-only="false"
>                        username="{$username}" password="{$password}"
> auth-method="{$auth-method}"
>                        send-authorization="{$send-authorization}"/>
>           </p:inline>
>         </p:input>
>         <p:input port="source"><p:empty/></p:input>
>         <p:with-param name="href" select="$href"/>
>         <p:with-param name="username" select="$username"/>
>         <p:with-param name="password" select="$password"/>
>         <p:with-param name="auth-method" select="$auth-method"/>
>         <p:with-param name="send-authorization" select="$send-
> authorization"/>
>       </p:template>
>     </p:when>
>     <p:otherwise>
>       <p:template>
>         <p:input port="template">
>           <p:inline>
>             <c:request method="get" href="{$href}" detailed="false"
> status-only="false"/>
>           </p:inline>
>         </p:input>
>         <p:input port="source"><p:empty/></p:input>
>         <p:with-param name="href" select="$href"/>
>       </p:template>
>     </p:otherwise>
>   </p:choose>
> 
>   <p:choose>
>     <p:when test="p:value-available('override-content-type')">
>       <p:add-attribute match="/c:request" attribute-name="override-
> content-type">
>         <p:with-option name="attribute-value" select="$override-
> content-type"/>
>       </p:add-attribute>
>     </p:when>
>     <p:otherwise>
>       <p:identity/>
>     </p:otherwise>
>   </p:choose>
> 
>   <p:http-request/>
> 
>   <p:choose>
>     <p:when test="starts-with(/c:body/@content-type,'text/html') and
> /c:body/@encoding = 'base64'
>                   and contains(/c:body/@content-type, 'charset')">
>       <p:unescape-markup content-type="text/html" encoding="base64"/>
>       <p:unwrap match="/c:body"/>
>     </p:when>
>     <p:when test="starts-with(/c:body/@content-type,'text/html') and
> /c:body/@encoding = 'base64'">
>       <!-- Per RFC 2616, the default charset for text/* types is ISO
> 8859-1 -->
>       <p:unescape-markup content-type="text/html" encoding="base64"
> charset="iso-8859-1"/>
>       <p:unwrap match="/c:body"/>
>     </p:when>
>     <p:when test="starts-with(/c:body/@content-type,'text/html')">
>       <p:unescape-markup content-type="text/html"/>
>       <p:unwrap match="/c:body"/>
>     </p:when>
>     <p:when test="/c:body/@content-type = 'application/json'">
>       <p:unescape-markup content-type="application/json"
> encoding="base64" charset="utf-8"/>
>       <p:unwrap match="/c:body"/>
>     </p:when>
>     <p:otherwise>
>       <p:identity/>
>     </p:otherwise>
>   </p:choose>
> 
> </p:declare-step>


Short, elegant, simple.


--
Vojtech Toman
Consultant Software Engineer
EMC | Information Intelligence Group
vojtech.toman@emc.com
http://developer.emc.com/xmltech

Received on Tuesday, 11 October 2011 14:31:51 GMT

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