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/*---------------------------------------- |
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$Id: comm.js,v 1.5 2005/10/12 23:15:13 migurski Exp $ |
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vim: ts=4 foldcolumn=4 foldmethod=marker |
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|
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This file is part of Reblog: http://reblog.org |
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A derivative work of Feed On Feeds: http://feedonfeeds.com |
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|
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Distributed under the Gnu Public License, see LICENSE |
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|
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Copyright ©2004 Michael Frumin, Michal Migurski |
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mike@stamen.com, http://stamen.com |
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mfrumin@eyebeam.org, http://eyebeam.org |
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|
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comm.js - Refeed.ServerComm handles JSON-RPC calls to Refeed |
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----------------------------------------*/ |
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|
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// namespace |
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if(window.refeed == null) { window.refeed = {}; } |
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if(Refeed == null) { var Refeed = window.refeed; } |
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|
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Refeed.ServerComm = { |
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|
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remoteCall: function(method, params, onResult, onError) |
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{ |
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if(window.XMLHttpRequest) { |
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var request = new XMLHttpRequest(); |
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|
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} else if(window.ActiveXObject) { |
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var request = new ActiveXObject("Microsoft.XMLHTTP"); |
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|
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} |
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|
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if(request) { |
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request.onreadystatechange = function() |
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{ |
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if(request.readyState == 4) { |
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if(request.status == '200') { |
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//alert(request.responseText); |
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eval('var response = '+request.responseText+';'); |
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|
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if(response.result && !response.error && onResult) { |
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onResult(response.result); |
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|
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} else if(response.error && !response.result && onError) { |
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onError(response.error); |
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|
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} |
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} |
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} |
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}; |
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|
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request.open("POST", Refeed.ServerComm.callHREF, true); |
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request.send(Refeed.ServerComm.jsonEncode({method:method, params:params, id:0})); |
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} |
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}, |
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|
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jsonEncode: function(arg) |
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{ |
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var i, o, u, v; |
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|
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switch (typeof arg) { |
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case 'object': |
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if (arg) { |
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if (arg.constructor == Array) { |
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o = ''; |
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for (i = 0; i < arg.length; ++i) { |
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v = Refeed.ServerComm.jsonEncode(arg[i]); |
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if (o) { |
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o += ','; |
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} |
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if (v !== u) { |
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o += v; |
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} else { |
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o += 'null,'; |
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} |
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} |
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return '[' + o + ']'; |
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} else if (typeof arg.toString != 'undefined') { |
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o = ''; |
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for (i in arg) { |
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v = Refeed.ServerComm.jsonEncode(arg[i]); |
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if (v !== u) { |
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if (o) { |
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o += ','; |
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} |
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o += Refeed.ServerComm.jsonEncode(i) + ':' + v; |
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} |
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} |
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return '{' + o + '}'; |
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} else { |
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return; |
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} |
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} |
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return 'null'; |
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case 'unknown': |
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case 'undefined': |
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case 'function': |
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return u; |
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case 'string': |
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var c, i, l = arg.length, o = '"'; |
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for (i = 0; i < l; i += 1) { |
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c = arg.charAt(i); |
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if (c >= ' ') { |
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if (c == '\\' || c == '"') { |
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o += '\\'; |
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} |
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o += c; |
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} else { |
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switch (c) { |
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case '\b': |
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o += '\\b'; |
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break; |
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case '\f': |
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o += '\\f'; |
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break; |
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case '\n': |
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o += '\\n'; |
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break; |
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case '\r': |
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o += '\\r'; |
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break; |
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case '\t': |
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o += '\\t'; |
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break; |
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default: |
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c = c.charCodeAt(); |
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o += '\\u00' + Math.floor(c / 16).toString(16) + |
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(c % 16).toString(16); |
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} |
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} |
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} |
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return o + '"'; |
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default: |
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return String(arg); |
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} |
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} |
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}; |
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