FS#12132 patch 6, part 2: tagnavi.config: Add support for "basename"

in formats and conditions.  The basename is the non-directory part of
a file's pathname.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30230 a1c6a512-1295-4272-9138-f99709370657

apps/tagcache.c

@@ -871,6 +871,10 @@ static long check_virtual_tags(int tag, int idx_id,
                    - find_tag(tag_commitid, idx_id, idx) - 1;
             break;
         
+        case tag_virt_basename:
+            tag = tag_filename; /* return filename; caller handles basename */
+            /* FALLTHRU */
+
         default:
             data = find_tag(tag, idx_id, idx);
     }
@@ -1011,7 +1015,8 @@ static bool check_clauses(struct tagcache_search *tcs,
             
             if (!TAGCACHE_IS_NUMERIC(clause->tag))
             {
-                if (clause->tag == tag_filename)
+                if (clause->tag == tag_filename
+                    || clause->tag == tag_virt_basename)
                 {
                     retrieve(tcs, idx, tag_filename, buf, sizeof buf);
                 }
@@ -1029,7 +1034,11 @@ static bool check_clauses(struct tagcache_search *tcs,
             
             if (!TAGCACHE_IS_NUMERIC(clause->tag))
             {
-                int fd = tcs->idxfd[clause->tag];
+                int tag = clause->tag;
+                if (tag == tag_virt_basename)
+                    tag = tag_filename;
+
+                int fd = tcs->idxfd[tag];
                 lseek(fd, seek, SEEK_SET);
                 ecread_tagfile_entry(fd, &tfe);
                 if (tfe.tag_length >= (int)sizeof(buf))
@@ -1047,6 +1056,13 @@ static bool check_clauses(struct tagcache_search *tcs,
             }
         }
 
+        if (clause->tag == tag_virt_basename)
+        {
+            char *basename = strrchr(str, '/');
+            if (basename)
+                str = basename + 1;
+        }
+
         if (!check_against_clause(seek, str, clause))
         {
             /* Clause failed -- try finding a logical-or clause */

apps/tagcache.h

@@ -36,7 +36,7 @@ enum tag_type { tag_artist = 0, tag_album, tag_genre, tag_title,
     /* Real tags end here, count them. */
     TAG_COUNT,
     /* Virtual tags */
-    tag_virt_length_min, tag_virt_length_sec,
+    tag_virt_basename, tag_virt_length_min, tag_virt_length_sec,
     tag_virt_playtime_min, tag_virt_playtime_sec,
     tag_virt_entryage, tag_virt_autoscore };
 
@@ -106,7 +106,7 @@ enum tag_type { tag_artist = 0, tag_album, tag_genre, tag_title,
     (1LU << tag_tracknumber) | (1LU << tag_length) | (1LU << tag_bitrate) | \
     (1LU << tag_playcount) | (1LU << tag_rating) | (1LU << tag_playtime) | \
     (1LU << tag_lastplayed) | (1LU << tag_commitid) | (1LU << tag_mtime) | \
-    (1LU << tag_lastoffset) | \
+    (1LU << tag_lastoffset) | (1LU << tag_virt_basename) | \
     (1LU << tag_virt_length_min) | (1LU << tag_virt_length_sec) | \
     (1LU << tag_virt_playtime_min) | (1LU << tag_virt_playtime_sec) | \
     (1LU << tag_virt_entryage) | (1LU << tag_virt_autoscore))

apps/tagtree.c

@@ -238,6 +238,7 @@ static int get_tag(int *tag)
         {"Ps", tag_virt_playtime_sec},
         {"title", tag_title},
         {"filename", tag_filename},
+        {"basename", tag_virt_basename},
         {"tracknum", tag_tracknumber},
         {"discnum", tag_discnumber},
         {"year", tag_year},