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jssource/src_files/include/javascript/yui3/build/dataschema/dataschema-text.js

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+/*
+Copyright (c) 2009, Yahoo! Inc. All rights reserved.
+Code licensed under the BSD License:
+http://developer.yahoo.net/yui/license.txt
+version: 3.0.0
+build: 1549
+*/
+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 {
+                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);
+
+
+
+}, '3.0.0' ,{requires:['dataschema-base']});