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/*
* Copyright 2004 Timo Hirvonen
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#include "track_db.h"
#include "db.h"
#include "xmalloc.h"
#include "player.h"
#include "utils.h"
#include "debug.h"
#include <inttypes.h>
struct track_db {
struct db *db;
};
/*
* data format:
*
* u32 mtime
* u32 duration
* N
* string key
* string value
*/
struct track_db *track_db_new(const char *filename_base)
{
struct track_db *db;
int rc;
db = xnew(struct track_db, 1);
db->db = db_new(filename_base);
rc = db_load(db->db);
if (rc) {
d_print("error: %s\n", rc == -1 ? strerror(errno) : "-2");
}
return db;
}
int track_db_close(struct track_db *db)
{
int rc;
rc = db_close(db->db);
free(db);
return rc;
}
void track_db_insert(struct track_db *db, const char *filename, struct track_info *ti)
{
char *key, *data, *ptr;
int data_size, i, rc;
data_size = 8;
for (i = 0; ti->comments[i].key; i++) {
data_size += strlen(ti->comments[i].key) + 1;
data_size += strlen(ti->comments[i].val) + 1;
}
data = xmalloc(data_size);
*(uint32_t *)(data + 0) = ti->mtime;
*(uint32_t *)(data + 4) = ti->duration;
ptr = data + 8;
for (i = 0; ti->comments[i].key; i++) {
char *s;
int size;
s = ti->comments[i].key;
size = strlen(s) + 1;
memcpy(ptr, s, size);
ptr += size;
s = ti->comments[i].val;
size = strlen(s) + 1;
memcpy(ptr, s, size);
ptr += size;
}
key = xstrdup(filename);
rc = db_insert(db->db, key, data, data_size);
if (rc) {
d_print("error: %s\n", strerror(errno));
free(data);
}
}
static int data_to_track_info(const void *data, unsigned int data_size, struct track_info *ti)
{
const char *str = data;
int count, i;
if (data_size < 8)
return -1;
ti->mtime = *(uint32_t *)str; str += 4;
ti->duration = *(uint32_t *)str; str += 4;
count = 0;
if (data_size > 8) {
int pos = 0;
while (pos < data_size - 8) {
if (str[pos] == 0)
count++;
pos++;
}
if (str[data_size - 9] != 0 || count % 2)
return -1;
count /= 2;
}
ti->comments = xnew(struct keyval, count + 1);
for (i = 0; i < count; i++) {
int len;
char *s;
len = strlen(str);
s = xmalloc(len + 1);
memcpy(s, str, len + 1);
str += len + 1;
ti->comments[i].key = s;
len = strlen(str);
s = xmalloc(len + 1);
memcpy(s, str, len + 1);
str += len + 1;
ti->comments[i].val = s;
}
ti->comments[i].key = NULL;
ti->comments[i].val = NULL;
return 0;
}
struct track_info *track_db_get_track(struct track_db *db, const char *filename)
{
struct track_info *ti;
struct keyval *comments;
int duration;
void *data;
unsigned int data_size;
int rc;
time_t mtime = file_get_mtime(filename);
rc = db_query(db->db, filename, &data, &data_size);
if (rc == 1) {
/* found */
ti = track_info_new(filename);
if (data_to_track_info(data, data_size, ti)) {
free(ti);
free(data);
return NULL;
}
free(data);
if (mtime != -1 && ti->mtime == mtime) {
/* mtime not changed, return the data */
return ti;
}
/* db data not up to date, remove data */
db_remove(db->db, filename);
track_info_unref(ti);
} else if (rc == 0) {
/* not found */
} else {
/* error */
d_print("error: %s\n", rc == -1 ? strerror(errno) : "-2");
return NULL;
}
if (player_get_fileinfo(filename, &duration, &comments)) {
d_print("INVALID: '%s'\n", filename);
return NULL;
}
ti = track_info_new(filename);
ti->comments = comments;
ti->duration = duration;
ti->mtime = mtime;
track_db_insert(db, filename, ti);
return ti;
}
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