Accept FS#8008 - allows the current artist or album to be used in databse searches (use the #artist# or #album# keywords in tagnavi.config)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15354 a1c6a512-1295-4272-9138-f99709370657

apps/tagcache.h

@@ -109,12 +109,18 @@ struct tagcache_stat {
     // const char *uimessage;   /* Pending error message. Implement soon. */
 };
 
+enum source_type {source_constant, source_input, 
+                 source_current_artist, source_current_album};
+
+#define SOURCE_CURRENT_ARTIST "#artist#"
+#define SOURCE_CURRENT_ALBUM "#album#"
+
 struct tagcache_search_clause
 {
     int tag;
     int type;
     bool numeric;
-    bool input;
+    int source;
     long numeric_data;
     char *str;
 };

apps/tagnavi.config

@@ -139,6 +139,11 @@
 "User Rating" -> title = "fmt_rating" ? rating > ""
 "Comment" -> album ? comment ~ "" -> title = "fmt_title"
 
+# Define the "same as current" sub menu
+%menu_start "same" "Same as current"
+"Artist" -> album ? artist = "#artist#" -> title  = "fmt_title" 
+"Album" -> title = "fmt_title" ? album = "#album#"
+
 # Define the runtime sub menu
 %menu_start "runtime" "Play history"
 "Most played (Plays|Score)" -> title = "fmt_mostplayed" ? playcount > "0"
@@ -166,6 +171,7 @@
 "Recently Added" -> album ? entryage < "4" & commitid > "0" -> title = "fmt_title"
 "A to Z..." ==> "a2z"
 "History..." ==> "runtime"
+"Same as current..." ==> "same"
 "Search..." ==> "search"
 "Custom view..."  ==> "custom"
 

apps/tagtree.c

@@ -50,7 +50,8 @@
 
 static int tagtree_play_folder(struct tree_context* c);
 
-static char searchstring[128];
+#define SEARCHSTR_SIZE 128
+static char searchstring[SEARCHSTR_SIZE];
 
 enum variables {
     var_sorttype = 100,
@@ -293,9 +294,13 @@ static bool read_clause(struct tagcache_search_clause *clause)
     logf("got clause: %d/%d [%s]", clause->tag, clause->type, clause->str);
     
     if (*(clause->str) == '\0')
-        clause->input = true;
+        clause->source = source_input;
+    else if (!strcasecmp(clause->str, SOURCE_CURRENT_ALBUM))
+        clause->source = source_current_album;
+    else if (!strcasecmp(clause->str, SOURCE_CURRENT_ARTIST))
+        clause->source = source_current_artist;
     else
-        clause->input = false;
+        clause->source = source_constant;
     
     if (tagcache_is_numeric_tag(clause->tag))
     {
@@ -1345,8 +1350,10 @@ int tagtree_enter(struct tree_context* c)
 {
     int rc = 0;
     struct tagentry *dptr;
+    struct mp3entry *id3;
     int newextra;
     int seek;
+    int source;
 
     dptr = tagtree_get_entry(c, c->selected_item);
     
@@ -1388,20 +1395,43 @@ int tagtree_enter(struct tree_context* c)
                 {
                     for (j = 0; j < csi->clause_count[i]; j++)
                     {
-                        if (!csi->clause[i][j]->input)
+                        *searchstring='\0';
+                        source = csi->clause[i][j]->source;
+                        
+                        if (source == source_constant)
                             continue;
                         
-                        rc = kbd_input(searchstring, sizeof(searchstring));
+                        id3 = audio_current_track();
-                        if (rc == -1 || !searchstring[0])
+
+                        if ((source == source_current_artist) && 
+                            (id3) && (id3->artist)) 
                         {
-                            tagtree_exit(c);
+                            strncpy(searchstring, id3->artist, SEARCHSTR_SIZE);
-                            return 0;
+                            searchstring[SEARCHSTR_SIZE-1] = '\0';
-                        }
+                        }           
-                        
+
+                        if ((source == source_current_album) && 
+                            (id3) && (id3->album)) 
+                        {
+                            strncpy(searchstring, id3->album, SEARCHSTR_SIZE);
+                            searchstring[SEARCHSTR_SIZE-1] = '\0';
+                        }           
+
+                        if((source == source_input) || (*searchstring=='\0'))
+                        {
+                            rc = kbd_input(searchstring, SEARCHSTR_SIZE);
+                            if (rc == -1 || !searchstring[0])
+                            {
+                                tagtree_exit(c);
+                                return 0;
+                            }
+                        }   
+                                             
                         if (csi->clause[i][j]->numeric)
                             csi->clause[i][j]->numeric_data = atoi(searchstring);
-                        else
+                            
-                            csi->clause[i][j]->str = searchstring;
+                        /* existing bug: only one dynamic string per clause! */    
+                        csi->clause[i][j]->str = searchstring;
                     }
                 }
             }