From 5013e1c904cc0bbd102f2c85f35dd29c9489cfaf Mon Sep 17 00:00:00 2001
From: Moshe Kolodny <kolodny@github.com>
Date: Sun, 28 Sep 2014 22:04:12 -0400
Subject: [PATCH] moving over to module system

---
 .gitignore         |  1 +
 bin/index.js       | 59 ++++++++++++++++++++++++++++++++++++++++++++++
 lib/index.js       |  6 +++++
 lib/read-writer.js | 31 ++++++++++++++++++++++++
 package.json       | 12 ++++++----
 5 files changed, 104 insertions(+), 5 deletions(-)
 create mode 100644 .gitignore
 create mode 100644 bin/index.js
 create mode 100644 lib/index.js
 create mode 100644 lib/read-writer.js

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..c2658d7
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+node_modules/
diff --git a/bin/index.js b/bin/index.js
new file mode 100644
index 0000000..9d6e2a6
--- /dev/null
+++ b/bin/index.js
@@ -0,0 +1,59 @@
+#!/usr/bin/env node
+
+var program = require('commander');
+var fs = require('fs');
+var nip = require('../lib');
+
+program.name = 'nip';
+
+program
+  .version('0.0.1')
+  .usage('[js-function] [options] [files]')
+  .option('-1, --first-line-only', 'only execute once per file, not for each line')
+  .option('-f, --file [js-file]', 'use the js-file as the executer on the input')
+  .option('-n, --line-splitter [regex]', 'the line separator, gets sent to RegExp', '\\r?\\n')
+
+program.on('--help', function() {
+  console.log([
+  	"",
+  	"  Here are some {} clones of well known cli tools",
+  	"",
+  	"  cat : {} 'return line' file.txt",
+  	"  cat : {} 'return true' file.txt",
+  	"  head: {} 'return index <= 10' file.txt",
+  	"  head: {} 'function(line, index) { return index <= 10; }' file.txt",
+  	"  tail: {} --buffer 'return lines.slice(-10).join(\"\\n\")' file.txt",
+  	"  grep: {} 'return /node/.test(line)' file.txt",
+  	"  sed : {} 'return line.replace(/hello/g, \"goodbye\")' file.txt",
+  	"",
+  	"  this tool takes a list of files like other cli tools to work on",
+  	"  you can pass in - for stdin so you can do something like this",
+  	"  `echo appended | nip 'return true' file.txt - > newfile.txt`",
+  	"",
+  ].join('\n').replace(/\{\}/g, program.name));
+});
+
+program.parse(process.argv);
+
+if (!program.file && !/[^a-z0-9$_]/i.test(program.args[0])) {
+	program.help();
+}
+
+if (program.file && /[^a-z0-9$_]/i.test(program.args[0])) {
+	console.log("You can use either the --file option or the [js-function], not both");
+	process.exit()
+}
+
+var js;
+if (program.file) {
+	js = fs.readFileSync(program.file)
+} else {
+	js = program.args[0];
+	program.args.splice(0, 1);
+}
+
+if (program.args.length === 0) {
+	program.args.push('-');
+}
+
+nip(program);
\ No newline at end of file
diff --git a/lib/index.js b/lib/index.js
new file mode 100644
index 0000000..d1047eb
--- /dev/null
+++ b/lib/index.js
@@ -0,0 +1,6 @@
+function compileJs(js, ctx) {
+  if (/^return\b/.test(js)) {
+    return js = 'return function(line, index, lines) {\n' + js + '\n}'
+  }
+  return new Function(js)().bind(ctx);
+}
diff --git a/lib/read-writer.js b/lib/read-writer.js
new file mode 100644
index 0000000..a36a57d
--- /dev/null
+++ b/lib/read-writer.js
@@ -0,0 +1,31 @@
+var fs = require('fs');
+var _ = require('lodash');
+
+module.exports = function readWriter(filename, options) {
+	options = _.extend(options || {}, {
+		chunksize: 4096,
+		splitter: '\\r?\\n',
+	});
+
+	var bytesRead;
+	var readOffset = 0;
+	var file = fs.openSync(filename, 'r+');
+	var buffer = new Buffer(options.chunksize);
+	var splitterRegex = new RegExp(options.splitter, 'g');
+	var lines;
+
+	while (true) {
+		bytesRead = fs.readSync(file, buffer, 0, options.chunksize, readOffset);
+		if (bytesRead === 0) break;
+		lines = buffer
+					.slice(readOffset, bytesRead)
+					.toString('utf8')
+					.split(splitterRegex);
+		console.log(lines);
+		readOffset += bytesRead;		
+	}
+
+	console.log(options);
+}
+
+module.exports( './lib/read-writer.js', {})
\ No newline at end of file
diff --git a/package.json b/package.json
index 3450080..bb3d979 100644
--- a/package.json
+++ b/package.json
@@ -8,17 +8,19 @@
     "url": "http://github.com/kolodny/nip.git"
   },
   "dependencies": {
-    "ccolors": "0.3.x"
+    "ccolors": "0.3.x",
+    "commander": "^2.3.0",
+    "lodash": "^2.4.1"
   },
   "bin": {
     "nip": "./index.js"
   },
   "keywords": [
-  	"cli",
-  	"unix",
-  	"utility",
+    "cli",
+    "unix",
+    "utility",
     "sed",
     "grep",
     "awk"
   ]
-}
\ No newline at end of file
+}