From a84060217d124c7061ceb11b398f1280b6b31e6e Mon Sep 17 00:00:00 2001
From: old9 <qi.jiahui@gmail.com>
Date: Fri, 8 Nov 2013 13:48:03 +0800
Subject: [PATCH 1/2] Adds options to control overwiting behaviors.

forceCopy, defaults to true.
forceOverwrite, defaults to false.
---
 README.md                 | 48 ++++++++++++++++++++++++++++++++++++---
 lib/grunt-text-replace.js | 35 +++++++++++++++++++++++++---
 2 files changed, 77 insertions(+), 6 deletions(-)

diff --git a/README.md b/README.md
index 6b3efcf..10b6478 100644
--- a/README.md
+++ b/README.md
@@ -157,8 +157,7 @@ replacements: [{
 
 ### options
 
-*options* is an object, specific to a target, and the only supported option is 
-*processTemplates*
+*options* is an object, specific to a target, currently supports these settings:
 
 #### processTemplates
 
@@ -186,9 +185,52 @@ replace: {
 }
 ```
 
-
 [grunt.template]: https://github.com/gruntjs/grunt/wiki/grunt.template
 
+#### forceOverwrite
+
+**forceOverwrite** when set to true (by default it is false) force overwrites the 
+file even if the result(after replacing) is identical with the source(before replacing).
+
+```javascript
+replace: {
+  foceCopy_example: {
+    src: ['text/*.txt'],
+    overwrite: true,
+    options: {
+      forceOverwrite: true
+    },
+    replacements: [{ 
+      from: 'foo',
+      to: 'bar'
+    }]
+  }
+}
+```
+
+#### forceCopy
+
+**forceCopy** when set to false (by default it is true) prevents from copying when the
+result(after replacing) is identical with the source(before replacing).
+
+```javascript
+replace: {
+  foceCopy_example: {
+    src: ['text/*.txt'],
+    dest: 'build/text/',
+    options: {
+      forceCopy: false
+    },
+    replacements: [{ 
+      from: 'foo',
+      to: 'bar'
+    }]
+  }
+}
+```
+
+
+
 ## Road map
 Some changes I'm considering. Happy to receive suggestions for/against:
 
diff --git a/lib/grunt-text-replace.js b/lib/grunt-text-replace.js
index 4aaf51d..564f20b 100644
--- a/lib/grunt-text-replace.js
+++ b/lib/grunt-text-replace.js
@@ -41,7 +41,19 @@ gruntTextReplace = {
     var replacements = settings.replacements;
     grunt.file.copy(pathToSourceFile, pathToDestinationFile, {
       process: function (text) {
-        return gruntTextReplace.replaceTextMultiple(text, replacements);
+        var content = gruntTextReplace.replaceTextMultiple(text, replacements);
+        var identical = content === text;
+        var overwrite = pathToSourceFile === pathToDestinationFile;
+        var forceCopy = gruntTextReplace.forceSettings.forceCopy;
+        var forceOverwrite = gruntTextReplace.forceSettings.forceOverwrite;
+        if (
+            (identical && overwrite && !forceOverwrite) ||
+            (identical && !overwrite && !forceCopy)
+          ){
+          return false;
+        }else{
+          return content;
+        }
       }
     });
   },
@@ -171,6 +183,23 @@ gruntTextReplace = {
       isProcessTemplateTrue = false;
     }
     return isProcessTemplateTrue ? grunt.template.process(string) : string;
-  }
+  },
 
-}
+  forceSettings: (function(){
+    var forceCopy = true;
+    var forceOverwrite = false;
+
+    if (grunt.task.current.data &&
+        grunt.task.current.data.options && 
+        grunt.task.current.data.options.forceCopy === false){
+      forceCopy = false;
+    }
+    if (grunt.task.current.data &&
+        grunt.task.current.data.options && 
+        grunt.task.current.data.options.forceOverwrite === true){
+      forceOverwrite = true;
+    }
+
+    return {'forceCopy' : forceCopy, 'forceOverwrite': forceOverwrite};
+  })()
+};

From 362ed8b5c600a6a54db09a937b8b962bc5886121 Mon Sep 17 00:00:00 2001
From: old9 <qi.jiahui@gmail.com>
Date: Fri, 17 Jan 2014 09:14:53 +0800
Subject: [PATCH 2/2] fix typo

---
 README.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 10b6478..2ca027d 100644
--- a/README.md
+++ b/README.md
@@ -194,7 +194,7 @@ file even if the result(after replacing) is identical with the source(before rep
 
 ```javascript
 replace: {
-  foceCopy_example: {
+  forceCopy_example: {
     src: ['text/*.txt'],
     overwrite: true,
     options: {
@@ -215,7 +215,7 @@ result(after replacing) is identical with the source(before replacing).
 
 ```javascript
 replace: {
-  foceCopy_example: {
+  forceCopy_example: {
     src: ['text/*.txt'],
     dest: 'build/text/',
     options: {