2 * Copyright (C) 2018 Nick Downing <nick@ndcode.org>
3 * SPDX-License-Identifier: MIT
5 * Permission is hereby granted, free of charge, to any person obtaining a copy
6 * of this software and associated documentation files (the "Software"), to
7 * deal in the Software without restriction, including without limitation the
8 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
9 * sell copies of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 let BuildCache = require('@ndcode/build_cache')
25 let assert = require('assert')
26 let disk_build = require('@ndcode/disk_build')
27 let fs = require('fs')
28 let jst = require('@ndcode/jst')
29 let path = require('path')
30 let util = require('util')
32 let fs_readFile = util.promisify(fs.readFile)
33 let fs_writeFile = util.promisify(fs.writeFile)
35 let JSTCache = function(root, args, diag1, diag) {
36 if (!this instanceof JSTCache)
37 throw new Error('JSTCache is a constructor')
38 BuildCache.call(this, diag)
40 this.root = root || '.'
43 if (args !== undefined)
45 if (Object.prototype.hasOwnProperty.call(args, i)) {
46 this.arg_names.push(i)
47 this.arg_values.push(args[i])
51 JSTCache.prototype = Object.create(BuildCache.prototype)
53 JSTCache.prototype.build = async function(key, result) {
54 let render = await disk_build(
56 async temp_pathname => /*await*/ fs_writeFile(
59 `module.exports = async (${['_require', '_pathname', '_root'].concat(this.arg_names).join(', ')}) => {${await fs_readFile(key, {encoding: 'utf-8'})}}\n`
65 assert(render.deps.length === 0)
66 let full_pathname = require.resolve(render.pathname)
67 delete require.cache[full_pathname]
68 result.value = await require(full_pathname)(
71 let temp = path.posix.dirname(key)
72 while (pathname.charAt(0) === '/') {
74 pathname = pathname.slice(1)
76 pathname = path.posix.resolve(temp, pathname)
77 return this.get(pathname)
87 module.exports = JSTCache