97 lines
3.0 KiB
JavaScript
97 lines
3.0 KiB
JavaScript
/*
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* grunt-contrib-jst
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* http://gruntjs.com/
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*
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* Copyright (c) 2012 Tim Branyen, contributors
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* Licensed under the MIT license.
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*/
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'use strict';
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module.exports = function(grunt) {
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var _ = require('lodash');
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// filename conversion for templates
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var defaultProcessName = function(name) { return name; };
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grunt.registerMultiTask('jst', 'Compile underscore templates to JST file', function() {
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var lf = grunt.util.linefeed;
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var helpers = require('grunt-lib-contrib').init(grunt);
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var options = this.options({
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namespace: 'JST',
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templateSettings: {},
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processContent: function (src) { return src; },
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separator: lf + lf
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});
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// assign filename transformation functions
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var processName = options.processName || defaultProcessName;
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grunt.verbose.writeflags(options, 'Options');
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var nsInfo;
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if (options.namespace !== false) {
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nsInfo = helpers.getNamespaceDeclaration(options.namespace);
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}
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this.files.forEach(function(f) {
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var output = f.src.filter(function(filepath) {
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// Warn on and remove invalid source files (if nonull was set).
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if (!grunt.file.exists(filepath)) {
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grunt.log.warn('Source file "' + filepath + '" not found.');
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return false;
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} else {
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return true;
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}
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})
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.map(function(filepath) {
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var src = options.processContent(grunt.file.read(filepath));
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var compiled, filename;
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try {
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compiled = _.template(src, false, options.templateSettings).source;
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} catch (e) {
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grunt.log.error(e);
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grunt.fail.warn('JST "' + filepath + '" failed to compile.');
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}
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if (options.prettify) {
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compiled = compiled.replace(new RegExp('\n', 'g'), '');
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}
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filename = processName(filepath);
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if (options.amd && options.namespace === false) {
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return 'return ' + compiled;
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}
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return nsInfo.namespace+'['+JSON.stringify(filename)+'] = '+compiled+';';
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});
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if (output.length < 1) {
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grunt.log.warn('Destination not written because compiled files were empty.');
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} else {
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if (options.namespace !== false) {
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output.unshift(nsInfo.declaration);
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}
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if (options.amd) {
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if (options.prettify) {
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output.forEach(function(line, index) {
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output[index] = " " + line;
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});
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}
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output.unshift("define(function(){");
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if (options.namespace !== false) {
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// Namespace has not been explicitly set to false; the AMD
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// wrapper will return the object containing the template.
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output.push(" return " + nsInfo.namespace + ";");
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}
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output.push("});");
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}
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grunt.file.write(f.dest, output.join(grunt.util.normalizelf(options.separator)));
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grunt.log.writeln('File "' + f.dest + '" created.');
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}
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});
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});
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};
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