Remove caching facility, jst() now does bare text-to-text conversion, add CLI

diff --git a/cli.js b/cli.js
new file mode 100755 (executable)
index 0000000..07fc5df
--- /dev/null
+++ b/cli.js
@@ -0,0 +1,30 @@
+#!/usr/bin/env node
+
+let commander = require('commander')
+let fs = require('fs')
+let jst = require('./jst')
+
+commander
+  .version('0.1.0', '-v, --version')
+  .option('-s, --signature <str>', 'function signature for --wrap [async (_require, _pathname, _root)]', 'async (_require, _pathname, _root)')
+  .option('-b, --bare-returns', 'allow return in top level code', false)
+  .option('-i, --indent <n>', 'indent [2]', '2')
+  .option('-j, --initial-indent <n>', 'initial indent level [0]', '0')
+  .option('-w, --wrap', 'wrap as jst_server CommonJS module', false)
+  .parse(process.argv)
+
+let text = fs.readFileSync(0, {encoding: 'utf-8'})
+if (commander.wrap)
+  text = `module.exports=${commander.signature}=>{${text}}`
+fs.writeSync(
+  1,
+  jst(
+    text,
+    {
+      bare_returns: commander.bareReturns,
+      indent: parseInt(commander.indent),
+      initial_indent: parseInt(commander.initialIndent)
+    }
+  ),
+  {encoding: 'utf-8'}
+)

diff --git a/jst.js b/jst.js
index 2e26ba8..94f72ed 100644 (file)
--- a/jst.js
+++ b/jst.js
@@ -1,17 +1,17 @@
 /*
  * Copyright (C) 2018 Nick Downing <nick@ndcode.org>
  * SPDX-License-Identifier: MIT
- * 
+ *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to
  * deal in the Software without restriction, including without limitation the
  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
  * sell copies of the Software, and to permit persons to whom the Software is
  * furnished to do so, subject to the following conditions:
- * 
+ *
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
- * 
+ *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
@@ -21,70 +21,26 @@
  * IN THE SOFTWARE.
  */
 
-let BuildCache = require('@ndcode/build_cache')
 let acorn = require('./dist/acorn')
-let assert = require('assert')
 let astring = require('astring')
-let disk_build = require('@ndcode/disk_build')
-let fs = require('fs')
-let path = require('path')
 let transform = require('./transform')
 let visitors = require('./visitors')
-let util = require('util')
 
-let fs_readFile = util.promisify(fs.readFile)
-let fs_writeFile = util.promisify(fs.writeFile)
-
-let build_cache = new BuildCache()
-let jst = (pathname, root, args) => /*await*/ build_cache.get(
-  pathname,
-  async result => {
-    let arg_names = ['_require', '_pathname', '_root']
-    let arg_values = [
-      async require_pathname => {
-        let temp = path.posix.dirname(pathname)
-        while (require_pathname.charAt(0) === '/') {
-          temp = root
-          require_pathname = require_pathname.slice(1)
-        }
-        require_pathname = path.posix.resolve(temp, require_pathname)
-        return jst(require_pathname, root, args)
-      },
-      pathname,
-      root
-    ]
-    if (args !== undefined)
-      for (let i in args)
-        if (Object.prototype.hasOwnProperty.call(args, i)) {
-          arg_names.push(i)
-          arg_values.push(args[i])
-        }
-
-    let render = await disk_build(
-      pathname,
-      async temp_pathname => {
-        let text = await fs_readFile(pathname, {encoding: 'utf-8'})
-        return /*await*/ fs_writeFile(
-          temp_pathname,
-          astring.generate(
-            transform.transform(
-              visitors,
-              acorn.parse(
-                `module.exports = async (${arg_names.join(', ')}) => {${text}}`
-              )
-            ),
-            {} //indent: ''}
-          ),
-          {encoding: 'utf-8'}
-        )
-      },
-      true
-    )
-    assert(render.deps.length === 0)
-    let full_pathname = require.resolve(render.pathname)
-    delete require.cache[full_pathname]
-    result.value = await (require(full_pathname)).apply(null, arg_values)
-  }
-)
+let jst = (text, options) => {
+  options = Object.assign(
+    {bare_returns: true, indent: 2, initial_indent: 0},
+    options || {}
+  )
+  return astring.generate(
+    transform.transform(
+      visitors,
+      acorn.parse(text, {allowReturnOutsideFunction: options.bare_returns})
+    ),
+    {
+      indent: ' '.repeat(options.indent),
+      startingIndentLevel: options.initial_indent
+    }
+  )
+}
 
 module.exports = jst

diff --git a/package.json b/package.json
index d3c3bdb..525a5aa 100644 (file)
--- a/package.json
+++ b/package.json
@@ -18,6 +18,9 @@
   "bugs": {
     "email": "nick@ndcode.org"
   },
+  "bin": {
+    "jst": "./cli.js"
+  },
   "main": "jst.js",
   "engines": {
     "node": ">=0.4.0"