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Diffstat (limited to 'node_modules/handlebars/lib/precompiler.js')
| -rw-r--r-- | node_modules/handlebars/lib/precompiler.js | 276 |
1 files changed, 276 insertions, 0 deletions
diff --git a/node_modules/handlebars/lib/precompiler.js b/node_modules/handlebars/lib/precompiler.js new file mode 100644 index 000000000..a20d1419d --- /dev/null +++ b/node_modules/handlebars/lib/precompiler.js @@ -0,0 +1,276 @@ +/* eslint-disable no-console */ +import Async from 'async'; +import fs from 'fs'; +import * as Handlebars from './handlebars'; +import {basename} from 'path'; +import {SourceMapConsumer, SourceNode} from 'source-map'; +import uglify from 'uglify-js'; + +module.exports.loadTemplates = function(opts, callback) { + loadStrings(opts, function(err, strings) { + if (err) { + callback(err); + } else { + loadFiles(opts, function(err, files) { + if (err) { + callback(err); + } else { + opts.templates = strings.concat(files); + callback(undefined, opts); + } + }); + } + }); +}; + +function loadStrings(opts, callback) { + let strings = arrayCast(opts.string), + names = arrayCast(opts.name); + + if (names.length !== strings.length + && strings.length > 1) { + return callback(new Handlebars.Exception('Number of names did not match the number of string inputs')); + } + + Async.map(strings, function(string, callback) { + if (string !== '-') { + callback(undefined, string); + } else { + // Load from stdin + let buffer = ''; + process.stdin.setEncoding('utf8'); + + process.stdin.on('data', function(chunk) { + buffer += chunk; + }); + process.stdin.on('end', function() { + callback(undefined, buffer); + }); + } + }, + function(err, strings) { + strings = strings.map((string, index) => ({ + name: names[index], + path: names[index], + source: string + })); + callback(err, strings); + }); +} + +function loadFiles(opts, callback) { + // Build file extension pattern + let extension = (opts.extension || 'handlebars').replace(/[\\^$*+?.():=!|{}\-\[\]]/g, function(arg) { return '\\' + arg; }); + extension = new RegExp('\\.' + extension + '$'); + + let ret = [], + queue = (opts.files || []).map((template) => ({template, root: opts.root})); + Async.whilst(() => queue.length, function(callback) { + let {template: path, root} = queue.shift(); + + fs.stat(path, function(err, stat) { + if (err) { + return callback(new Handlebars.Exception(`Unable to open template file "${path}"`)); + } + + if (stat.isDirectory()) { + opts.hasDirectory = true; + + fs.readdir(path, function(err, children) { + /* istanbul ignore next : Race condition that being too lazy to test */ + if (err) { + return callback(err); + } + children.forEach(function(file) { + let childPath = path + '/' + file; + + if (extension.test(childPath) || fs.statSync(childPath).isDirectory()) { + queue.push({template: childPath, root: root || path}); + } + }); + + callback(); + }); + } else { + fs.readFile(path, 'utf8', function(err, data) { + /* istanbul ignore next : Race condition that being too lazy to test */ + if (err) { + return callback(err); + } + + if (opts.bom && data.indexOf('\uFEFF') === 0) { + data = data.substring(1); + } + + // Clean the template name + let name = path; + if (!root) { + name = basename(name); + } else if (name.indexOf(root) === 0) { + name = name.substring(root.length + 1); + } + name = name.replace(extension, ''); + + ret.push({ + path: path, + name: name, + source: data + }); + + callback(); + }); + } + }); + }, + function(err) { + if (err) { + callback(err); + } else { + callback(undefined, ret); + } + }); +} + +module.exports.cli = function(opts) { + if (opts.version) { + console.log(Handlebars.VERSION); + return; + } + + if (!opts.templates.length && !opts.hasDirectory) { + throw new Handlebars.Exception('Must define at least one template or directory.'); + } + + if (opts.simple && opts.min) { + throw new Handlebars.Exception('Unable to minimize simple output'); + } + + const multiple = opts.templates.length !== 1 || opts.hasDirectory; + if (opts.simple && multiple) { + throw new Handlebars.Exception('Unable to output multiple templates in simple mode'); + } + + // Force simple mode if we have only one template and it's unnamed. + if (!opts.amd && !opts.commonjs && opts.templates.length === 1 + && !opts.templates[0].name) { + opts.simple = true; + } + + // Convert the known list into a hash + let known = {}; + if (opts.known && !Array.isArray(opts.known)) { + opts.known = [opts.known]; + } + if (opts.known) { + for (let i = 0, len = opts.known.length; i < len; i++) { + known[opts.known[i]] = true; + } + } + + const objectName = opts.partial ? 'Handlebars.partials' : 'templates'; + + let output = new SourceNode(); + if (!opts.simple) { + if (opts.amd) { + output.add('define([\'' + opts.handlebarPath + 'handlebars.runtime\'], function(Handlebars) {\n Handlebars = Handlebars["default"];'); + } else if (opts.commonjs) { + output.add('var Handlebars = require("' + opts.commonjs + '");'); + } else { + output.add('(function() {\n'); + } + output.add(' var template = Handlebars.template, templates = '); + if (opts.namespace) { + output.add(opts.namespace); + output.add(' = '); + output.add(opts.namespace); + output.add(' || '); + } + output.add('{};\n'); + } + + opts.templates.forEach(function(template) { + let options = { + knownHelpers: known, + knownHelpersOnly: opts.o + }; + + if (opts.map) { + options.srcName = template.path; + } + if (opts.data) { + options.data = true; + } + + let precompiled = Handlebars.precompile(template.source, options); + + // If we are generating a source map, we have to reconstruct the SourceNode object + if (opts.map) { + let consumer = new SourceMapConsumer(precompiled.map); + precompiled = SourceNode.fromStringWithSourceMap(precompiled.code, consumer); + } + + if (opts.simple) { + output.add([precompiled, '\n']); + } else { + if (!template.name) { + throw new Handlebars.Exception('Name missing for template'); + } + + if (opts.amd && !multiple) { + output.add('return '); + } + output.add([objectName, '[\'', template.name, '\'] = template(', precompiled, ');\n']); + } + }); + + // Output the content + if (!opts.simple) { + if (opts.amd) { + if (multiple) { + output.add(['return ', objectName, ';\n']); + } + output.add('});'); + } else if (!opts.commonjs) { + output.add('})();'); + } + } + + + if (opts.map) { + output.add('\n//# sourceMappingURL=' + opts.map + '\n'); + } + + output = output.toStringWithSourceMap(); + output.map = output.map + ''; + + if (opts.min) { + output = uglify.minify(output.code, { + fromString: true, + + outSourceMap: opts.map, + inSourceMap: JSON.parse(output.map) + }); + if (opts.map) { + output.code += '\n//# sourceMappingURL=' + opts.map + '\n'; + } + } + + if (opts.map) { + fs.writeFileSync(opts.map, output.map, 'utf8'); + } + output = output.code; + + if (opts.output) { + fs.writeFileSync(opts.output, output, 'utf8'); + } else { + console.log(output); + } +}; + +function arrayCast(value) { + value = value != null ? value : []; + if (!Array.isArray(value)) { + value = [value]; + } + return value; +} |