cacert-testmgr/external/ZendFramework-1.9.5/externals/dojo/dojox/io/httpParse.js
Markus Warg 8398c9048d initially import ZendFramework-1.9.5 into repository
code was modified slightly, so the code differs from the original downloadable 1.9.5 version
2010-03-31 10:12:32 +02:00

75 lines
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3 KiB
JavaScript

dojo.provide("dojox.io.httpParse");
dojox.io.httpParse = function(/*String*/httpStream, /*String?*/topHeaders,/*Boolean?*/ partial){
// summary:
// Parses an HTTP stream for a message.
// httpStream:
// HTTP stream to parse
// topHeaders:
// Extra header information to add to each HTTP request (kind of HTTP inheritance)
// partial:
// A true value indicates that the stream may not be finished, it may end arbitrarily in mid stream.
// The last XHR object will have a special property _lastIndex that indicates the how far along
// the httpStream could be successfully parsed into HTTP messages.
// return:
// Returns an array of XHR-like object for reading the headers for each message
//
var xhrs=[];
var streamLength = httpStream.length;
do{
var headers = {};
var httpParts = httpStream.match(/(\n*[^\n]+)/);
if(!httpParts){
return null;
}
httpStream = httpStream.substring(httpParts[0].length+1);
httpParts = httpParts[1];
var headerParts = httpStream.match(/([^\n]+\n)*/)[0];
httpStream = httpStream.substring(headerParts.length);
var headerFollowingChar = httpStream.substring(0,1);
httpStream = httpStream.substring(1);
headerParts = (topHeaders || "") + headerParts;
var headerStr = headerParts;
headerParts = headerParts.match(/[^:\n]+:[^\n]+\n/g); // parse the containing and contained response headers with the contained taking precedence (by going last)
for(var j = 0; j < headerParts.length; j++){
var colonIndex = headerParts[j].indexOf(':');
headers[headerParts[j].substring(0,colonIndex)] = headerParts[j].substring(colonIndex+1).replace(/(^[ \r\n]*)|([ \r\n]*)$/g,''); // trim
}
httpParts = httpParts.split(' ');
var xhr = { // make it look like an xhr object, at least for the response part of the API
status : parseInt(httpParts[1],10),
statusText : httpParts[2],
readyState : 3, // leave it at 3 until we get a full body
getAllResponseHeaders : function(){
return headerStr;
},
getResponseHeader : function(name){
return headers[name];
}
};
var contentLength = headers['Content-Length'];
var content;
if(contentLength){
if(contentLength <= httpStream.length){
content = httpStream.substring(0,contentLength);
}else{
return xhrs; // the content is not finished
}
}else if((content = httpStream.match(/(.*)HTTP\/\d\.\d \d\d\d[\w\s]*\n/))){ // assign content
// if we spot another HTTP message coming up, we will just assign all the in between text to the content
content = content[0];
}else if(!partial || headerFollowingChar == '\n'){
// if we have to finish
content = httpStream;
}else{
return xhrs;
}
xhrs.push(xhr); // add it to the list, since it is a full HTTP message
httpStream = httpStream.substring(content.length); // move along the stream
xhr.responseText = content;
xhr.readyState = 4;
xhr._lastIndex = streamLength - httpStream.length; // need to pick up from where we left on streaming connections
}while(httpStream);
return xhrs;
}