From afc9d62c146bdeec475c08ee87875271a8af8d93 Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Tue, 18 Mar 2014 15:03:21 +0000
Subject: Add support for writing to output file in CLI

---
 lib/main.js         |  6 +++++-
 package.json        |  3 ++-
 tests/main.tests.js | 19 +++++++++++++++++++
 3 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/lib/main.js b/lib/main.js
index 39ebf43..c68183f 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -1,3 +1,5 @@
+var fs = require("fs");
+
 var optimist = require("optimist");
 
 var mammoth = require("./");
@@ -6,7 +8,9 @@ var argv = optimist.argv;
 
 mammoth.convertToHtml({path: argv._[0]})
     .then(function(result) {
-        process.stdout.write(result.value);
+        var outputStream = argv._[1] ? fs.createWriteStream(argv._[1]) : process.stdout;
+        
+        outputStream.write(result.value);
     })
     .done();
 
diff --git a/package.json b/package.json
index a05c17c..dc3a427 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,8 @@
     "browserify": "~3.18.0",
     "license-sniffer": "~0.1.0",
     "duck": "~0.1.11",
-    "uglify-js": "~2.4.8"
+    "uglify-js": "~2.4.8",
+    "temp": "~0.7.0"
   },
   "browser": {
     "./lib/unzip.js": "./browser/unzip.js"
diff --git a/tests/main.tests.js b/tests/main.tests.js
index 1093027..a97a049 100644
--- a/tests/main.tests.js
+++ b/tests/main.tests.js
@@ -1,5 +1,9 @@
 var assert = require("assert");
 var child_process = require("child_process");
+var path = require("path");
+var fs = require("fs");
+
+var temp = require('temp').track();
 
 var promises = require("../lib/promises");
 var test = require("./testing").test;
@@ -12,6 +16,17 @@ describe("CLI", function() {
             assert.equal(result.output, "<p>Walking on imported air</p>")
         });
     });
+    
+    test("HTML is written to file if output file is set", function() {
+        return createTempDir().then(function(tempDir) {
+            var outputPath = path.join(tempDir, "output.html");
+            return runMammoth(testPath("single-paragraph.docx"), outputPath).then(function(result) {
+                assert.equal(result.stderrOutput, "")
+                assert.equal(result.output, "")
+                assert.equal(fs.readFileSync(outputPath), "<p>Walking on imported air</p>");
+            });
+        });
+    });
 });
 
 function runMammoth() {
@@ -29,3 +44,7 @@ function runMammoth() {
     
     return deferred.promise;
 }
+
+function createTempDir() {
+    return promises.nfcall(temp.mkdir, null);
+}
-- 
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