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/**
* Yaml offers convenience methods to parse and dump YAML.
*
* @author Fabien Potencier <fabien@symfony.com>
*
* @api
*/
var isNode = false;
var Yaml = function(){};
Yaml.prototype =
{
/**
* Parses YAML into a JS representation.
*
* The parse method, when supplied with a YAML stream (file),
* will do its best to convert YAML in a file into a JS representation.
*
* Usage:
* <code>
* obj = yaml.parseFile('config.yml');
* </code>
*
* @param string input Path of YAML file
*
* @return array The YAML converted to a JS representation
*
* @throws YamlParseException If the YAML is not valid
*/
parseFile: function(file /* String */, callback /* Function */)
{
if ( callback == null )
{
var input = this.getFileContents(file);
var ret = null;
try
{
ret = this.parse(input);
}
catch ( e )
{
if ( e instanceof YamlParseException ) {
e.setParsedFile(file);
}
throw e;
}
return ret;
}
this.getFileContents(file, function(data)
{
callback(new Yaml().parse(data));
});
},
/**
* Parses YAML into a JS representation.
*
* The parse method, when supplied with a YAML stream (string),
* will do its best to convert YAML into a JS representation.
*
* Usage:
* <code>
* obj = yaml.parse(...);
* </code>
*
* @param string input string containing YAML
*
* @return array The YAML converted to a JS representation
*
* @throws YamlParseException If the YAML is not valid
*/
parse: function(input /* String */)
{
var yaml = new YamlParser();
return yaml.parse(input);
},
/**
* Dumps a JS representation to a YAML string.
*
* The dump method, when supplied with an array, will do its best
* to convert the array into friendly YAML.
*
* @param array array JS representation
* @param integer inline The level where you switch to inline YAML
*
* @return string A YAML string representing the original JS representation
*
* @api
*/
dump: function(array, inline)
{
if ( inline == null ) inline = 2;
var yaml = new YamlDumper();
return yaml.dump(array, inline);
},
getXHR: function()
{
if ( window.XMLHttpRequest )
return new XMLHttpRequest();
if ( window.ActiveXObject )
{
var names = [
"Msxml2.XMLHTTP.6.0",
"Msxml2.XMLHTTP.3.0",
"Msxml2.XMLHTTP",
"Microsoft.XMLHTTP"
];
for ( var i = 0; i < 4; i++ )
{
try{ return new ActiveXObject(names[i]); }
catch(e){}
}
}
return null;
},
getFileContents: function(file, callback)
{
if ( isNode )
{
var fs = require('fs');
if ( callback == null )
{
var data = fs.readFileSync(file);
if (data == null) return null;
return ''+data;
}
else
{
fs.readFile(file, function(err, data)
{
if (err)
callback(null);
else
callback(data);
});
}
}
else
{
var request = this.getXHR();
// Sync
if ( callback == null )
{
request.open('GET', file, false);
request.send(null);
if ( request.status == 200 || request.status == 0 )
return request.responseText;
return null;
}
// Async
request.onreadystatechange = function()
{
if ( request.readyState == 4 )
if ( request.status == 200 || request.status == 0 )
callback(request.responseText);
else
callback(null);
};
request.open('GET', file, true);
request.send(null);
}
}
};
var YAML =
{
/*
* @param integer inline The level where you switch to inline YAML
*/
stringify: function(input, inline)
{
return new Yaml().dump(input, inline);
},
parse: function(input)
{
return new Yaml().parse(input);
},
load: function(file, callback)
{
return new Yaml().parseFile(file, callback);
}
};
// Handle node.js case
if (typeof exports !== 'undefined') {
if (typeof module !== 'undefined' && module.exports) {
exports = module.exports = YAML;
isNode = true;
// Add require handler
(function () {
var require_handler = function (module, filename) {
// fill in result
module.exports = YAML.load(filename);
};
// register require extensions only if we're on node.js
// hack for browserify
if ( undefined !== require.extensions ) {
require.extensions['.yml'] = require_handler;
require.extensions['.yaml'] = require_handler;
}
}());
}
}
|
