dataschema-text-debug.js revision 8392a541bf432ed8d6e1985b6306b83dc898768d
YUI.add('dataschema-text', function(Y) {
/**
* Provides a DataSchema implementation which can be used to work with delimited text data.
*
* @module dataschema
* @submodule dataschema-text
*/
/**
* Text subclass for the DataSchema Utility.
* @class DataSchema.Text
* @extends DataSchema.Base
* @static
*/
var LANG = Y.Lang,
SchemaText = {
/////////////////////////////////////////////////////////////////////////////
//
// DataSchema.Text static methods
//
/////////////////////////////////////////////////////////////////////////////
/**
* Applies a given schema to given delimited text data.
*
* @method apply
* @param schema {Object} Schema to apply.
* @param data {Object} Text data.
* @return {Object} Schema-parsed data.
* @static
*/
apply: function(schema, data) {
var data_in = data,
data_out = {results:[],meta:{}};
if(LANG.isString(data_in) && LANG.isString(schema.resultDelimiter)) {
// Parse results data
data_out = SchemaText._parseResults(schema, data_in, data_out);
}
else {
Y.log("Text data could not be schema-parsed: " + Y.dump(data) + " " + Y.dump(data), "error", "dataschema-text");
data_out.error = new Error("Text schema parse failure");
}
return data_out;
},
/**
* Schema-parsed list of results from full data
*
* @method _parseResults
* @param schema {Array} Schema to parse against.
* @param text_in {String} Text to parse.
* @param data_out {Object} In-progress parsed data to update.
* @return {Object} Parsed data object.
* @static
* @protected
*/
_parseResults: function(schema, text_in, data_out) {
var resultDelim = schema.resultDelimiter,
results = [],
results_in, fields_in, result, item, fields, field, key, value, i, j,
// Delete final delimiter at end of string if there
tmpLength = text_in.length-resultDelim.length;
if(text_in.substr(tmpLength) == resultDelim) {
text_in = text_in.substr(0, tmpLength);
}
// Split into results
results_in = text_in.split(schema.resultDelimiter);
for(i=results_in.length-1; i>-1; i--) {
result = {};
item = results_in[i];
if(LANG.isString(schema.fieldDelimiter)) {
fields_in = item.split(schema.fieldDelimiter);
if(LANG.isArray(schema.resultFields)) {
fields = schema.resultFields;
for(j=fields.length-1; j>-1; j--) {
field = fields[j];
key = (!LANG.isUndefined(field.key)) ? field.key : field;
value = (!LANG.isUndefined(fields_in[key])) ? fields_in[key] : fields_in[j];
result[key] = Y.DataSchema.Base.parse(value, field);
}
}
}
else {
result = item;
}
results[i] = result;
}
data_out.results = results;
return data_out;
}
};
Y.DataSchema.Text = Y.mix(SchemaText, Y.DataSchema.Base);
}, '@VERSION@' ,{requires:['dataschema-base']});