From 7c4d232b64e42f52bb4edcadc1884ebb626c5aad Mon Sep 17 00:00:00 2001
From: Sijmen Mulder <ik@sjmulder.nl>
Date: Thu, 12 May 2016 13:03:44 +0000
Subject: [PATCH] Accept input from stdin

In line with Unix conventions, this lets cssbeautify be used as an
intermediate step in a command:

    curl http://example.com/main.css | cssbeautify > main.css
---
 bin/cssbeautify | 32 +++++++++++++++++++-------------
 1 file changed, 19 insertions(+), 13 deletions(-)

diff --git a/bin/cssbeautify b/bin/cssbeautify
index 40afd7f..9848eb3 100755
--- a/bin/cssbeautify
+++ b/bin/cssbeautify
@@ -32,19 +32,16 @@ cssbeautify = require('cssbeautify');
 
 function showUsage() {
     console.log('Usage:');
-    console.log('   cssbeautify [options] style.css');
+    console.log('   cssbeautify [options] [<FILE>]');
     console.log();
     console.log('Available options:');
     console.log();
     console.log('  -v, --version  Shows program version');
+    console.log('  FILE           CSS file to read instead of standard input');
     console.log();
     process.exit(1);
 }
 
-if (process.argv.length <= 2) {
-    showUsage();
-}
-
 options = {};
 
 process.argv.splice(2).forEach(function (entry) {
@@ -67,15 +64,24 @@ 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');
-    style = cssbeautify(content);
-    console.log(style);
+    if (fname) {
+        content = fs.readFileSync(fname, 'utf-8');
+        style = cssbeautify(content);
+        console.log(style);
+    } else {
+        content = '';
+
+        process.stdin.resume();
+        process.stdin.on('data', function(chunk) {
+            content += chunk;
+        });
+
+        process.stdin.on('end', function(chunk) {
+            style = cssbeautify(content);
+            console.log(style);
+        });
+    }
 } catch (e) {
     console.log('Error: ' + e.message);
     process.exit(1);