From 82a030985891ad7efcfb6be381aeb742c1d25c81 Mon Sep 17 00:00:00 2001
From: mde <mde@fleegix.org>
Date: Sun, 19 Apr 2020 12:02:25 -0700
Subject: [PATCH] Implemented CLI

---
 bin/cli.js   | 162 +++++++++++++++++++++++++++++++++++++++++++++++++++
 package.json |   3 +
 usage.txt    |  15 +++++
 3 files changed, 180 insertions(+)
 create mode 100755 bin/cli.js
 create mode 100644 usage.txt

diff --git a/bin/cli.js b/bin/cli.js
new file mode 100755
index 00000000..b94fe2f4
--- /dev/null
+++ b/bin/cli.js
@@ -0,0 +1,162 @@
+#!/usr/bin/env node
+/*
+ * EJS: Embedded JavaScript templating language
+ * Copyright 2112 Matthew Eernisse (mde@fleegix.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+*/
+
+let program = require('jake').program;
+delete global.jake; // NO NOT WANT
+
+let ejs = require('../lib/ejs');
+let fs = require('fs');
+let args = process.argv.slice(2);
+let usage = fs.readFileSync(`${__dirname}/../usage.txt`).toString();
+
+const CLI_OPTS = [
+  { full: 'debug',
+    abbr: 'd',
+    expectValue: false,
+    allowValue: false,
+    passThrough: true,
+  },
+  { full: 'delimiter',
+    abbr: 'm',
+    expectValue: true,
+    passThrough: true,
+  },
+  { full: 'openDelimiter',
+    abbr: 'o',
+    expectValue: true,
+    passThrough: true,
+  },
+  { full: 'closeDelimiter',
+    abbr: 'c',
+    expectValue: true,
+    passThrough: true,
+  },
+  { full: 'strict',
+    abbr: 's',
+    expectValue: false,
+    allowValue: false,
+    passThrough: true,
+  },
+  { full: 'noWith',
+    abbr: 'n',
+    expectValue: false,
+    allowValue: false,
+  },
+  { full: 'localsName',
+    abbr: 'l',
+    expectValue: true,
+    passThrough: true,
+  },
+  { full: 'rmWhitespace',
+    abbr: 'w',
+    expectValue: false,
+    allowValue: false,
+    passThrough: true,
+  },
+  { full: 'outputFile',
+    abbr: 'f',
+    expectValue: true,
+  },
+  { full: 'root',
+    abbr: 'r',
+    expectValue: true,
+    passThrough: true,
+  },
+  { full: 'dataFile',
+    abbr: 'a',
+    expectValue: true,
+  },
+  { full: 'help',
+    abbr: 'h',
+    passThrough: true,
+  },
+  { full: 'version',
+    abbr: 'V',
+    passThrough: true,
+  },
+  // Alias lowercase v
+  { full: 'version',
+    abbr: 'v',
+    passThrough: true,
+  },
+];
+
+let preempts = {
+  version: function () {
+    program.die(ejs.VERSION);
+  },
+  help: function () {
+    program.die(usage);
+  }
+};
+
+function run() {
+
+  program.availableOpts = CLI_OPTS;
+  program.parseArgs(args);
+
+  let pOpts = program.opts;
+  let pVals = program.envVars;
+  let templatePath = program.taskNames[0];
+
+  let opts = {};
+  let vals = {};
+
+  // Same-named 'passthrough' opts
+  CLI_OPTS.forEach((opt) => {
+    let optName = opt.full;
+    if (opt.passThrough && typeof pOpts[optName] != 'undefined') {
+      opts[optName] = pOpts[optName];
+    }
+  });
+
+  // Bail out for help/version
+  for (let p in opts) {
+    if (preempts[p]) {
+      return preempts[p]();
+    }
+  }
+
+  if (opts.strict) {
+    pOpts.noWith = true;
+  }
+  if (pOpts.noWith) {
+    opts._with = false;
+  }
+
+  // Read the data from any data file
+  if (pOpts.dataFile) {
+    vals = JSON.parse(fs.readFileSync(pOpts.dataFile).toString())
+  }
+  // Override / set any values passed from the command line
+  for (p in pVals) {
+    vals[p] = pVals[p];
+  }
+
+  let template = fs.readFileSync(templatePath).toString();
+  let output = ejs.render(template, vals, opts);
+  if (pOpts.outputFile) {
+    fs.writeFileSync(pOpts.outputFile, output);
+  }
+  else {
+    console.log(output);
+  }
+}
+
+run();
diff --git a/package.json b/package.json
index 57c4ef5c..05b1a30a 100644
--- a/package.json
+++ b/package.json
@@ -9,6 +9,9 @@
   "version": "3.0.2",
   "author": "Matthew Eernisse <mde@fleegix.org> (http://fleegix.org)",
   "license": "Apache-2.0",
+  "bin": {
+    "ejs": "./bin/cli.js"
+  },
   "main": "./lib/ejs.js",
   "repository": {
     "type": "git",
diff --git a/usage.txt b/usage.txt
new file mode 100644
index 00000000..690d3cea
--- /dev/null
+++ b/usage.txt
@@ -0,0 +1,15 @@
+EJS: Embedded JavaScript templating
+{Usage}: ejs [options ...] templateFile [data variables ...]
+
+{Options}:
+  -f,     --jakefile FILE            Use FILE as the Jakefile.
+  -C,     --directory DIRECTORY      Change to DIRECTORY before running tasks.
+  -q,     --quiet                    Do not log messages to standard output.
+  -B,     --always-make              Unconditionally make all targets.
+  -T/ls,  --tasks                 Display the tasks (matching optional PATTERN) with descriptions, then exit.
+  -J,     --jakelibdir JAKELIBDIR    Auto-import any .jake files in JAKELIBDIR. (default is \'jakelib\')
+  -h,     --help                     Display this help message.
+  -V/v,   --version                  Display the Jake version.
+  -ar,    --allow-rejection          Keep running even after unhandled promise rejection
+
+