Add alternative reading via shell on the environment which don't support interactively reading.

LICENSE-MIT

@@ -1,4 +1,4 @@
-Copyright (c) 2013 anseki
+Copyright (c) 2014 anseki
 
 Permission is hereby granted, free of charge, to any person
 obtaining a copy of this software and associated documentation

README.md

@@ -65,6 +65,7 @@ try {
 ```
 
 ## Release History
+ * 2014-06-27			v0.2.3			Add alternative reading via shell on the environment which don't support interactively reading.
  * 2013-12-18			v0.2.2			Error handle for the environment which don't support interactively reading from stdin.
  * 2013-08-30			v0.2.0			Rewrite exporting methods.
  * 2013-08-29			v0.1.0			Initial release.

lib/readline-sync.js

@@ -2,7 +2,7 @@
  * readlineSync
  * https://github.com/anseki/readline-sync
  *
- * Copyright (c) 2013 anseki
+ * Copyright (c) 2014 anseki
  * Licensed under the MIT license.
  */
 
@@ -14,9 +14,19 @@ var promptText = '> ',
   fs = require('fs'),
   stdin = process.stdin,
   stdout = process.stdout,
-  buffer = new Buffer(BUF_SIZE);
+  buffer = new Buffer(BUF_SIZE),
+  useShell = true;
 
-var _readlineSync = function(display) {
+function _readlineShell() {
+      // Win isn't supported by sync-exec v0.3.2
+  var command = /* require('os').platform() === 'win32' ?
+      'cmd "' + __dirname + '\\read.bat' : */
+      'sh "' + __dirname + '/read.sh"',
+    resExec = require('sync-exec')(command); // instead of execSync (node v0.12+)
+  return resExec.status === 0 && !resExec.stderr ? (resExec.stdout + '') : false;
+}
+
+function _readlineSync(display) {
   var input = '', rsize, err;
 
   if (display) { stdout.write(display, encoding); }
@@ -29,6 +39,14 @@ var _readlineSync = function(display) {
       rsize = fs.readSync(stdin.fd, buffer, 0, BUF_SIZE);
     } catch (e) {
       if (e.code === 'EOF') { break; } // pipe
+
+      if (useShell) {
+        // Try reading via shell
+        input = _readlineShell();
+        if (typeof input === 'string') { break; }
+      }
+
+      // Give up...
       if (e.code === 'EAGAIN') { // EAGAIN, resource temporarily unavailable
         // util can't inherit Error.
         err = new Error('The platform doesn\'t support interactive reading from stdin');
@@ -46,7 +64,10 @@ var _readlineSync = function(display) {
   stdin.pause();
 
   return input.trim();
-};
+}
+
+// for dev
+exports.useShellSet = function(use) { useShell = use; };
 
 exports.setPrompt = function(newPrompt) {
   if (typeof newPrompt === 'string') {

package.json

@@ -1,7 +1,7 @@
 {
   "name": "readline-sync",
   "description": "Synchronous Readline",
-  "version": "0.2.2",
+  "version": "0.2.3",
   "homepage": "https://github.com/anseki/readline-sync",
   "author": {
     "name": "anseki"
@@ -23,6 +23,9 @@
   "engines": {
     "node": ">= 0.8.0"
   },
+  "dependencies": {
+    "sync-exec": "~0.3.2"
+  },
   "keywords": [
     "readline",
     "synchronous",