more gdbm

src/db-gdbm.c

@@ -36,6 +36,7 @@
 #include "err.h"
 #include "mp3-scanner.h"
 #include "redblack.h"
+#include "db-generic.h"
 #include "db-gdbm.h"
 
 #ifndef GDBM_SYNC
@@ -89,6 +90,7 @@ void _gdbm_unlock(void) {
  */
 int db_gdbm_open(char **pe, char *parameters) {
     char db_path[PATH_MAX + 1];
+    int result = DB_E_SUCCESS;
 
     snprintf(db_path,sizeof(db_path),"%s/%s",parameters,"songs.gdb");
 
@@ -103,16 +105,14 @@ int db_gdbm_open(char **pe, char *parameters) {
                                 0600,NULL);
     }
 
-    _gdbm_unlock();
     if(!_gdbm_songs) {
         DPRINTF(E_FATAL,L_DB,"Could not open songs database (%s): %s\n",
                 db_path,strerror(errno));
-        return FALSE;
+        db_get_error(pe,DB_E_DB_ERROR,gdbm_strerror(gdbm_errno));
+        result = DB_E_DB_ERROR;
     }
-
-    return TRUE;
-
-
+    _gdbm_unlock();
+    return result;
 }
 
 /**
@@ -132,3 +132,75 @@ int db_gdbm_deinit(void) {
     return TRUE;
 }
 
+/**
+ * given an id, fetch the associated MP3FILE
+ *
+ * @param pe error buffer
+ * @param id id of item to fetch
+ * @returns pointer to MP3FILE.  Must be disposed of with db_dispose
+ */
+PACKED_MP3FILE *db_gdbm_fetch_item(char **pe, int id) {
+    datum key, content;
+    int content_size;
+    PACKED_MP3FILE *ppmp3;
+    char **char_array;
+    char *element_ptr;
+    int done=0;
+
+    /* pull a row that looks like a sql row out of the table */
+    key.dptr = (void*)&id;
+    key.dsize = sizeof(unsigned int);
+
+    _gdbm_lock();
+    content = gdbm_fetch(_gdbm_songs,key);
+    _gdbm_unlock();
+
+    if(content.dptr) {
+        /* have a "packed" row.... let's unpack it */
+        ppmp3=(PACKED_MP3FILE*)malloc(sizeof(PACKED_MP3FILE));
+        if(!ppmp3) {
+            DPRINTF(E_FATAL,L_DB,"db_gdbm_fetch_item: malloc\n");
+            return NULL;  /* lol */
+        }
+        memset(ppmp3,0x0,sizeof(PACKED_MP3FILE));
+        content_size = content.dsize;
+        element_ptr = content.dptr;
+        char_array = (char**)(ppmp3);
+
+        /* walk through and set each element */
+        while(!done) {
+
+        }
+
+
+    }
+
+    return NULL;
+}
+/**
+ * start a full scan through the database
+ *
+ * @parm pe error buffer
+ * @returns DB_E_SUCCESS or DB_E* on failure
+ */
+int db_gdbm_enum_start(char **pe) {
+    return DB_E_DB_ERROR;
+}
+
+PACKED_MP3FILE *db_gdbm_enum_fetch(char **pe) {
+    return NULL;
+}
+
+int db_gdbm_enum_end(char **pe) {
+    return DB_E_DB_ERROR;
+}
+
+/* Required for read-write (fs scanning) support */
+int db_gdbm_add(char **pe, MP3FILE *pmp3) {
+    return DB_E_DB_ERROR;
+}
+
+extern int db_gdbm_delete(char **pe, int id) {
+    return DB_E_DB_ERROR;
+}
+

src/db-gdbm.h

@@ -14,22 +14,20 @@
 
 #include "mp3-scanner.h"
 
-
 /* Always required */
 extern int db_gdbm_open(char **pe, char *parameters);
 extern int db_gdbm_init(int reload);
 extern int db_gdbm_deinit(void);
 
 /* Required for read-only support */
-extern MP3FILE *db_gdbm_fetch_item(char **pe, int id);
+extern PACKED_MP3FILE *db_gdbm_fetch_item(char **pe, int id);
 extern int db_gdbm_enum_start(char **pe);
-extern MP3FILE db_gebm_enum_fetch(char **pe);
+extern PACKED_MP3FILE *db_gdbm_enum_fetch(char **pe);
 extern int db_gdbm_enum_end(char **pe);
 
 /* Required for read-write (fs scanning) support */
 extern int db_gdbm_add(char **pe, MP3FILE *pmp3);
 extern int db_gdbm_delete(char **pe, int id);
 
-
 #endif /* _DB_GDBM_H_ */
 

src/db-generic.c

@@ -350,7 +350,8 @@ char *db_error_list[] = {
     "No backend database support for type: %s",
     "Could not initialize thread pool",
     "Passed buffer too small for result",
-    "Wrong db schema.  Use mtd-update to upgrade the db."
+    "Wrong db schema.  Use mtd-update to upgrade the db.",
+    "Database error: %s"
 };
 
 /* Globals */

src/db-generic.h

@@ -213,6 +213,7 @@ extern void db_dispose_playlist(M3UFILE *pm3u);
 #define DB_E_PROC                    0x0A /**< could not start threadpool */
 #define DB_E_SIZE                    0x0B /**< passed buffer too small */
 #define DB_E_WRONGVERSION            0x0C /**< must upgrade db */
+#define DB_E_DB_ERROR                0x0D /**< gdbm error */
 
 /* describes the individual database handlers */
 typedef struct tag_dbinfo {

src/mp3-scanner.h

@@ -90,6 +90,50 @@ typedef struct tag_m3ufile {
     int index;           /**< index of playlist for paths with multiple playlists */
 } M3UFILE;
 
+typedef struct tag_packed_mp3file {
+    char *id;
+    char *path;
+    char *fname;
+    char *title;
+    char *artist;
+    char *album;
+    char *genre;
+    char *comment;
+    char *type;
+    char *composer;
+    char *orchestra;
+    char *conductor;
+    char *grouping;
+    char *url;
+    char *bitrate;
+    char *samplerate;
+    char *song_length;
+    char *file_size;
+    char *year;
+    char *track;
+    char *total_tracks;
+    char *disc;
+    char *total_discs;
+    char *bpm;
+    char *compilation;
+    char *rating;
+    char *play_count;
+    char *data_kind;
+    char *item_kind;
+    char *description;
+    char *time_added;
+    char *time_modified;
+    char *time_played;
+    char *db_timestamp;
+    char *disabled;
+    char *sample_count;
+    char *force_update;
+    char *codectype;
+    char *idx;
+    char *has_video;
+    char *contentrating;
+} PACKED_MP3FILE;
+
 #define PL_STATICWEB  0
 #define PL_SMART      1
 #define PL_STATICFILE 2