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81 lines
2.7 KiB
JavaScript
81 lines
2.7 KiB
JavaScript
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#!/usr/bin/env node
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/*
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* JavaScript Templates Compiler
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* https://github.com/blueimp/JavaScript-Templates
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*
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* Copyright 2011, Sebastian Tschan
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* https://blueimp.net
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*
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* Licensed under the MIT license:
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* http://www.opensource.org/licenses/MIT
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*/
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;(function () {
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'use strict'
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var path = require('path')
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var tmpl = require(path.join(__dirname, 'tmpl.js'))
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var fs = require('fs')
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// Retrieve the content of the minimal runtime:
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var runtime = fs.readFileSync(path.join(__dirname, 'runtime.js'), 'utf8')
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// A regular expression to parse templates from script tags in a HTML page:
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var regexp = /<script( id="([\w\-]+)")? type="text\/x-tmpl"( id="([\w\-]+)")?>([\s\S]+?)<\/script>/gi
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// A regular expression to match the helper function names:
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var helperRegexp = new RegExp(
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tmpl.helper.match(/\w+(?=\s*=\s*function\s*\()/g).join('\\s*\\(|') + '\\s*\\('
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)
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// A list to store the function bodies:
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var list = []
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var code
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// Extend the Templating engine with a print method for the generated functions:
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tmpl.print = function (str) {
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// Only add helper functions if they are used inside of the template:
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var helper = helperRegexp.test(str) ? tmpl.helper : ''
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var body = str.replace(tmpl.regexp, tmpl.func)
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if (helper || (/_e\s*\(/.test(body))) {
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helper = '_e=tmpl.encode' + helper + ','
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}
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return 'function(' + tmpl.arg + ',tmpl){' +
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('var ' + helper + "_s='" + body + "';return _s;")
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.split("_s+='';").join('') + '}'
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}
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// Loop through the command line arguments:
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process.argv.forEach(function (file, index) {
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var listLength = list.length
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var stats
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var content
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var result
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var id
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// Skip the first two arguments, which are "node" and the script:
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if (index > 1) {
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stats = fs.statSync(file)
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if (!stats.isFile()) {
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console.error(file + ' is not a file.')
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return
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}
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content = fs.readFileSync(file, 'utf8')
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while (true) {
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// Find templates in script tags:
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result = regexp.exec(content)
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if (!result) {
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break
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}
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id = result[2] || result[4]
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list.push("'" + id + "':" + tmpl.print(result[5]))
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}
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if (listLength === list.length) {
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// No template script tags found, use the complete content:
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id = path.basename(file, path.extname(file))
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list.push("'" + id + "':" + tmpl.print(content))
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}
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}
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})
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if (!list.length) {
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console.error('Missing input file.')
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return
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}
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// Combine the generated functions as cache of the minimal runtime:
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code = runtime.replace('{}', '{' + list.join(',') + '}')
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// Print the resulting code to the console output:
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console.log(code)
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}())
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