From 3660ff5df1eed0024923f2e384e152f008043050 Mon Sep 17 00:00:00 2001
From: Bart Nagel <bart@tremby.net>
Date: Thu, 31 Oct 2013 13:57:30 -0700
Subject: [PATCH] Beautify stdin if there are no filename arguments

---
 README.md       |  9 +++++++++
 bin/cssbeautify | 38 +++++++++++++++++++++++---------------
 2 files changed, 32 insertions(+), 15 deletions(-)

diff --git a/README.md b/README.md
index f7e78a3..0725ea2 100644
--- a/README.md
+++ b/README.md
@@ -51,6 +51,15 @@ var beautified = cssbeautify('menu{opacity:.7}', {
 });
 ```
 
+## Command line use ##
+
+```
+npm install -g cssbeautify
+cssbeautify style.css # beautified CSS is output to console
+cssbeautify style.css >style.beautified.css # write to file
+curl http://example.com/style.css | cssbeautify # beautify stdin
+```
+
 ## Contributing ##
 
 Contributions are welcomed! Please read the [Contribution Guide](https://github.com/senchalabs/cssbeautify/blob/master/CONTRIBUTING.md) for more info.
diff --git a/bin/cssbeautify b/bin/cssbeautify
index 40afd7f..c05c55e 100755
--- a/bin/cssbeautify
+++ b/bin/cssbeautify
@@ -25,7 +25,7 @@
 
 /*jslint sloppy:true node:true */
 
-var fs, cssbeautify, fname, content, options, style;
+var fs, cssbeautify, fname, content, options;
 
 fs = require('fs');
 cssbeautify = require('cssbeautify');
@@ -33,6 +33,7 @@ cssbeautify = require('cssbeautify');
 function showUsage() {
     console.log('Usage:');
     console.log('   cssbeautify [options] style.css');
+    console.log('   curl http://example.com/style.css | cssbeautify [options]');
     console.log();
     console.log('Available options:');
     console.log();
@@ -41,10 +42,6 @@ function showUsage() {
     process.exit(1);
 }
 
-if (process.argv.length <= 2) {
-    showUsage();
-}
-
 options = {};
 
 process.argv.splice(2).forEach(function (entry) {
@@ -67,17 +64,28 @@ process.argv.splice(2).forEach(function (entry) {
     }
 });
 
-if (typeof fname !== 'string') {
-    console.log('Error: no input file.');
-    process.exit(1);
-}
-
-try {
-    content = fs.readFileSync(fname, 'utf-8');
+function beautifyAndOutput(err, content) {
+    var style;
+    if (err) {
+        console.log('Error: ' + err.message);
+        process.exit(1);
+    }
     style = cssbeautify(content);
     console.log(style);
-} catch (e) {
-    console.log('Error: ' + e.message);
-    process.exit(1);
 }
 
+if (typeof fname !== 'string') {
+    content = '';
+    process.stdin.resume();
+    process.stdin.on('data', function(buf) {
+        content += buf;
+    });
+    process.stdin.on('error', function(err) {
+        beautifyAndOutput(err);
+    });
+    process.stdin.on('end', function() {
+        beautifyAndOutput(null, content);
+    });
+} else {
+    fs.readFile(fname, 'utf-8', beautifyAndOutput);
+}