X-Git-Url: http://git.treefish.org/~alex/usetaglib.git/blobdiff_plain/13ffc39ada83ca2054654021357028b219543a15..d2b5c66be510d1b66430d33b79e7c2489caabaed:/usetaglib.cpp

diff --git a/usetaglib.cpp b/usetaglib.cpp
index 7909009..d4522d2 100644
--- a/usetaglib.cpp
+++ b/usetaglib.cpp
@@ -54,39 +54,32 @@ tagpair splitToTagPair (const string &rawarg)
   return make_pair(rawarg.substr(0, delpos), rawarg.substr(delpos+1, string::npos));
 }
 
-void action_eraseTag (const TagLib::FileRef f, const string &key)
+void action_eraseTag (TagLib::PropertyMap &propmap, const string &key)
 {
-  TagLib::PropertyMap propmap = f.file()->properties();
   propmap.erase(key);
-  f.file()->setProperties(propmap);
 }
 
-void action_replaceTag (const TagLib::FileRef f, const tagpair &tagPair)
+void action_replaceTag (TagLib::PropertyMap &propmap, const tagpair &tagPair)
 {
-  TagLib::PropertyMap propmap = f.file()->properties();
   propmap.replace(tagPair.first, argToStringList(tagPair.second));
-  f.file()->setProperties(propmap);
 }
 
-void action_insertTag (const TagLib::FileRef f, const tagpair &tagPair)
+void action_insertTag (TagLib::PropertyMap &propmap, const tagpair &tagPair)
 {
-  TagLib::PropertyMap propmap = f.file()->properties();
   propmap.insert(tagPair.first, argToStringList(tagPair.second));
-  f.file()->setProperties(propmap);
 }
 
-int action_printTags (const TagLib::FileRef f)
+int action_printTags (const TagLib::FileRef f, TagLib::PropertyMap &propmap)
 {
   if(f.tag()) {
-    TagLib::PropertyMap tags = f.file()->properties();
     unsigned int longest = 0;
-    for(TagLib::PropertyMap::ConstIterator i = tags.begin(); i != tags.end(); ++i) {
+    for(TagLib::PropertyMap::ConstIterator i = propmap.begin(); i != propmap.end(); ++i) {
       if (i->first.size() > longest) {
 	longest = i->first.size();
       }
     }
     cout << "-- TAG (properties) --" << endl;
-    for(TagLib::PropertyMap::ConstIterator i = tags.begin(); i != tags.end(); ++i) {
+    for(TagLib::PropertyMap::ConstIterator i = propmap.begin(); i != propmap.end(); ++i) {
       for(TagLib::StringList::ConstIterator j = i->second.begin(); j != i->second.end(); ++j) {
 	cout << i->first << "=" << *j << endl;
       }
@@ -115,7 +108,7 @@ int action_printAudio (const TagLib::FileRef f)
 }
 
 void printHelp ()
-{
+{  
   cout << "Usage: usetaglib [ACTION]... [FILE]..." << endl;
   cout << "List and edit tags on mediafiles in formats supported by libtag." << endl;
   cout << endl;
@@ -221,11 +214,14 @@ int main(int argc, char *argv[])
 
     if(f.isNull())
       continue;
+
+    TagLib::PropertyMap propmap = f.file()->properties();    
+    bool FCHANGED = false;
     
     for (actionqueue::iterator actit = requestedActions.begin(); actit != requestedActions.end(); ++actit) {
       switch (actit->first) {
       case LIST:
-	action_printTags(f);
+	action_printTags(f, propmap);
 	break;
 	
       case AUDIO:
@@ -233,20 +229,26 @@ int main(int argc, char *argv[])
 	break;
 	
       case ERASE:
-	action_eraseTag(f, actit->second);
+	action_eraseTag(propmap, actit->second);
+	FCHANGED = true;
 	break;
 	
       case REPLACE:
-	action_replaceTag(f, splitToTagPair(actit->second));
+	action_replaceTag(propmap, splitToTagPair(actit->second));
+	FCHANGED = true;
 	break;
 
       case INSERT:
-	action_insertTag(f, splitToTagPair(actit->second));
+	action_insertTag(propmap, splitToTagPair(actit->second));
+	FCHANGED = true;
 	break;
       }
     }
-    
-    f.file()->save();
+
+    if (FCHANGED) {
+      f.file()->setProperties(propmap);
+      f.file()->save();
+    }
   }
   
   return 0;