new feature: allow for files and directories deletion in browser

doc/config

@@ -174,6 +174,16 @@
 #
 #enable_window_title = "yes"
 #
+##
+## Note: These triggers will allow you to phisically remove
+## files and directories from your hdd in using ncmpcpp's
+## browser screen.
+##
+#
+#allow_physical_files_deletion = "no"
+#
+#allow_physical_directories_deletion = "no"
+#
 ##### lyrics support #####
 ##
 ## supported lyrics databases:

doc/ncmpcpp.1

@@ -186,6 +186,12 @@ If your external editor is console application, you need to enable it.
 .B block_search_constraints_change_if_items_found = yes/no
 If enabled, fields in Search engine above "Reset" button will be blocked after succesful searching, otherwise they won't.
 .TP 
+.B allow_physical_files_deletion = yes/no
+If enabled, ncmpcpp will be able to delete files using its browser screen.
+.TP 
+.B allow_physical_directories_deletion = yes/no
+If enabled, ncmpcpp will be able to delete directories using its browser screen.
+.TP 
 .B enable_window_title = yes/no
 If enabled, ncmpcpp will override current window title with its own one.
 .TP

src/browser.cpp

@@ -465,6 +465,41 @@ void Browser::GetDirectory(string dir, string subdir)
 		w->Highlight(highlightme);
 }
 
+void Browser::ClearDirectory(const std::string &path) const
+{
+	DIR *dir = opendir(path.c_str());
+	if (!dir)
+		return;
+	
+	dirent *file;
+	struct stat file_stat;
+	string full_path;
+	
+	// omit . and ..
+	for (int i = 0; i < 2; i++)
+	{
+		file = readdir(dir);
+		if (!file)
+		{
+			closedir(dir);
+			return;
+		}
+	}
+	
+	while ((file = readdir(dir)))
+	{
+		full_path = path;
+		if (*full_path.rbegin() != '/')
+			full_path += '/';
+		full_path += file->d_name;
+		lstat(full_path.c_str(), &file_stat);
+		if (S_ISDIR(file_stat.st_mode))
+			ClearDirectory(full_path);
+		remove(full_path.c_str());
+	}
+	closedir(dir);
+}
+
 void Browser::ChangeBrowseMode()
 {
 	if (Mpd->GetHostname()[0] != '/')

src/browser.h

@@ -52,6 +52,7 @@ class Browser : public Screen< Menu<MPD::Item> >
 		
 		void LocateSong(const MPD::Song &);
 		void GetDirectory(std::string, std::string = "/");
+		void ClearDirectory(const std::string &) const;
 		void ChangeBrowseMode();
 		void UpdateItemList();
 	

src/ncmpcpp.cpp

@@ -18,6 +18,7 @@
  *   51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.              *
  ***************************************************************************/
 
+#include <cerrno>
 #include <clocale>
 #include <csignal>
 
@@ -513,7 +514,56 @@ int main(int argc, char *argv[])
 			}
 			else if (myScreen == myBrowser && !myBrowser->Main()->Empty() && myBrowser->Main()->Current().type != itPlaylist)
 			{
-				// delete song/dir implementation here
+				MPD::Item &item = myBrowser->Main()->Current();
+				
+				if (item.type == itSong && !Config.allow_physical_files_deletion)
+				{
+					ShowMessage("Deleting files is disabled by default, see man page for more details");
+					continue;
+				}
+				if (item.type == itDirectory && (item.song || !Config.allow_physical_directories_deletion)) // [..]
+				{
+					ShowMessage("Deleting directories is disabled by default, see man page for more details");
+					continue;
+				}
+				
+				LockStatusbar();
+				Statusbar() << "Delete " << (item.type == itSong ? "file" : "directory") << ' ' << (item.type == itSong ? item.song->GetName() : item.name) << " ? [y/n] ";
+				curs_set(1);
+				int in = 0;
+				do
+				{
+					TraceMpdStatus();
+					wFooter->ReadKey(in);
+				}
+				while (in != 'y' && in != 'n');
+				if (in == 'y')
+				{
+					ShowMessage("Deleting...");
+					
+					string path;
+					if (!Config.local_browser)
+						path = Config.mpd_music_dir;
+					path += item.type == itSong ? item.song->GetFile() : item.name;
+					
+					if (item.type == itDirectory)
+						myBrowser->ClearDirectory(path);
+					
+					if (remove(path.c_str()) == 0)
+					{
+						ShowMessage("%s has been deleted!", item.type == itSong ? "File" : "Directory");
+						if (!Config.local_browser)
+							Mpd->UpdateDirectory(myBrowser->CurrentDir());
+						else
+							myBrowser->GetDirectory(myBrowser->CurrentDir());
+					}
+					else
+						ShowMessage("Deletion failed: %s", strerror(errno));
+				}
+				else
+					ShowMessage("Aborted!");
+				curs_set(0);
+				UnlockStatusbar();
 			}
 			else if (myScreen->ActiveWindow() == myPlaylistEditor->Content && !myPlaylistEditor->Content->Empty())
 			{

src/settings.cpp

@@ -278,6 +278,8 @@ void DefaultConfiguration(ncmpcpp_config &conf)
 	conf.block_search_constraints_change = true;
 	conf.use_console_editor = false;
 	conf.use_cyclic_scrolling = false;
+	conf.allow_physical_files_deletion = false;
+	conf.allow_physical_directories_deletion = false;
 	conf.set_window_title = true;
 	conf.mpd_port = 6600;
 	conf.mpd_connection_timeout = 15;
@@ -669,6 +671,14 @@ void ReadConfiguration(ncmpcpp_config &conf)
 			{
 				conf.block_search_constraints_change = v == "yes";
 			}
+			else if (cl.find("allow_physical_files_deletion") != string::npos)
+			{
+				conf.allow_physical_files_deletion = v == "yes";
+			}
+			else if (cl.find("allow_physical_directories_deletion") != string::npos)
+			{
+				conf.allow_physical_directories_deletion = v == "yes";
+			}
 			else if (cl.find("enable_window_title") != string::npos)
 			{
 				conf.set_window_title = v == "yes";

src/settings.h

@@ -170,6 +170,8 @@ struct ncmpcpp_config
 	bool block_search_constraints_change;
 	bool use_console_editor;
 	bool use_cyclic_scrolling;
+	bool allow_physical_files_deletion;
+	bool allow_physical_directories_deletion;
 	
 	int mpd_port;
 	int mpd_connection_timeout;