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|
/***********************************************************
* This file is part of glyr
* + a commnadline tool and library to download various sort of music related metadata.
* + Copyright (C) [2011] [Christopher Pahl]
* + Hosted at: https://github.com/sahib/glyr
*
* glyr is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* glyr 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with glyr. If not, see <http://www.gnu.org/licenses/>.
**************************************************************/
#include "cache_intern.h"
#include "cache.h"
#include "core.h"
#include "glyr.h"
#include "register_plugins.h"
///////////////////////////////
enum
{
SQL_TABLE_DEF,
SQL_FOREACH,
SQL_DELETE_SELECT,
SQL_ACTUAL_DELETE,
SQL_LOOKUP,
SQL_INSERT_CACHE
};
static const char * sqlcode[] =
{
[SQL_TABLE_DEF] =
"PRAGMA synchronous = 1; \n"
"PRAGMA temp_store = 2; \n"
"BEGIN IMMEDIATE; \n"
"-- Provider \n"
"CREATE TABLE IF NOT EXISTS providers (provider_name VARCHAR(20) UNIQUE); \n"
" \n"
"-- Artist \n"
"CREATE TABLE IF NOT EXISTS artists (artist_name VARCHAR(128) UNIQUE); \n"
"CREATE TABLE IF NOT EXISTS albums (album_name VARCHAR(128) UNIQUE); \n"
"CREATE TABLE IF NOT EXISTS titles (title_name VARCHAR(128) UNIQUE); \n"
" \n"
"-- Enum \n"
"CREATE TABLE IF NOT EXISTS image_types(image_type_name VARCHAR(16) UNIQUE); \n"
"CREATE TABLE IF NOT EXISTS db_version(version INTEGER UNIQUE); \n"
" \n"
"-- MetaData \n"
"CREATE TABLE IF NOT EXISTS metadata( \n"
" artist_id INTEGER, \n"
" album_id INTEGER, \n"
" title_id INTEGER, \n"
" provider_id INTEGER, \n"
" source_url VARCHAR(512), \n"
" image_type_id INTEGER, \n"
" track_duration INTEGER, \n"
" get_type INTEGER, \n"
" data_type INTEGER, \n"
" data_size INTEGER, \n"
" data_is_image INTEGER, \n"
" data_checksum BLOB, \n"
" data BLOB, \n"
" rating INTEGER, \n"
" timestamp FLOAT \n"
"); \n"
"CREATE INDEX IF NOT EXISTS index_artist_id ON metadata(artist_id); \n"
"CREATE INDEX IF NOT EXISTS index_album_id ON metadata(album_id); \n"
"CREATE INDEX IF NOT EXISTS index_title_id ON metadata(title_id); \n"
"CREATE INDEX IF NOT EXISTS index_provider_id ON metadata(provider_id); \n"
"CREATE UNIQUE INDEX IF NOT EXISTS index_unique \n"
" ON metadata(get_type,data_type,data_checksum,source_url); \n"
"-- Insert imageformats \n"
"INSERT OR IGNORE INTO image_types VALUES('jpeg'); \n"
"INSERT OR IGNORE INTO image_types VALUES('jpg'); \n"
"INSERT OR IGNORE INTO image_types VALUES('png'); \n"
"INSERT OR IGNORE INTO image_types VALUES('gif'); \n"
"INSERT OR IGNORE INTO image_types VALUES('tiff'); \n"
"INSERT OR IGNORE INTO db_version VALUES(2); \n"
"COMMIT; \n",
[SQL_FOREACH] =
"SELECT artist_name, \n"
" album_name, \n"
" title_name, \n"
" provider_name, \n"
" source_url, \n"
" image_type_name, \n"
" track_duration, \n"
" get_type, \n"
" data_type, \n"
" data_size, \n"
" data_is_image, \n"
" data_checksum, \n"
" data, \n"
" rating, \n"
" timestamp \n"
"FROM metadata as m \n"
"LEFT JOIN artists AS a ON m.artist_id = a.rowid \n"
"LEFT JOIN albums AS b ON m.album_id = b.rowid \n"
"LEFT JOIN titles AS t ON m.title_id = t.rowid \n"
"LEFT JOIN image_types AS i ON m.image_type_id = i.rowid \n"
"JOIN providers AS p on m.provider_id = p.rowid \n",
[SQL_DELETE_SELECT] =
"SELECT get_type, \n"
" artist_id, \n"
" album_id, \n"
" title_id, \n"
" provider_id \n"
" FROM metadata AS m \n"
"LEFT JOIN artists AS a ON a.rowid = m.artist_id \n"
"LEFT JOIN albums AS b ON b.rowid = m.album_id \n"
"LEFT JOIN titles AS t ON t.rowid = m.title_id \n"
"INNER JOIN providers AS p ON p.rowid = m.provider_id \n"
"WHERE \n"
" m.get_type = %d \n"
" %s -- Title Contraint \n"
" %s -- Album Constraint \n"
" %s -- Artist Constraint \n"
" AND p.provider_name IN(%s) \n"
" %s -- 'IsALink' Constraint \n"
"LIMIT %d; \n",
[SQL_ACTUAL_DELETE] =
"DELETE FROM metadata WHERE \n"
"get_type %s %s AND \n"
"artist_id %s %s AND \n"
"album_id %s %s AND \n"
"title_id %s %s AND \n"
"provider_id %s %s; \n",
[SQL_LOOKUP] =
"SELECT artist_name, \n"
" album_name, \n"
" title_name, \n"
" provider_name, \n"
" source_url, \n"
" image_type_name, \n"
" track_duration, \n"
" get_type, \n"
" data_type, \n"
" data_size, \n"
" data_is_image, \n"
" data_checksum, \n"
" data, \n"
" rating, \n"
" timestamp \n"
"FROM metadata as m \n"
"LEFT JOIN artists AS a ON m.artist_id = a.rowid \n"
"LEFT JOIN albums AS b ON m.album_id = b.rowid \n"
"LEFT JOIN titles AS t ON m.title_id = t.rowid \n"
"JOIN providers as p on m.provider_id = p.rowid \n"
"LEFT JOIN image_types as i on m.image_type_id = i.rowid \n"
"WHERE m.get_type = %d \n"
" %s -- Title constr. \n"
" %s -- Album constr. \n"
" %s -- Artist constr. \n"
" %s \n"
" AND provider_name IN(%s) \n"
"LIMIT %d; \n",
[SQL_INSERT_CACHE] =
"INSERT OR IGNORE INTO metadata VALUES( \n"
" (SELECT rowid FROM artists WHERE artist_name = LOWER('%q')), \n"
" (SELECT rowid FROM albums WHERE album_name = LOWER('%q')), \n"
" (SELECT rowid FROM titles WHERE title_name = LOWER('%q')), \n"
" (SELECT rowid FROM providers WHERE provider_name = LOWER('%q')), \n"
" ?, \n"
" (SELECT rowid FROM image_types WHERE image_type_name = LOWER('%q')),\n"
" ?,?,?,?,?,?,?,?,? \n"
"); \n"
};
////////////////////////////////////////////////////////
////////////////////// Prototypes //////////////////////
////////////////////////////////////////////////////////
static void insert_cache_data (GlyrDatabase * db, GlyrQuery * query, GlyrMemCache * cache);
static void execute (GlyrDatabase * db, const gchar * sql_statement);
static gchar * convert_from_option_to_sql (GlyrQuery * q);
static double get_current_time (void);
static void add_to_cache_list (GlyrMemCache ** list, GlyrMemCache * to_add);
static int delete_callback (void * result, int argc, char ** argv, char ** azColName);
static int select_callback (void * result, int argc, char ** argv, char ** azColName);
////////////////////////////////////////////////////////
////////////////// Useful Defines //////////////////////
////////////////////////////////////////////////////////
#define INSERT_STRING(SQL,ARG) { \
if(SQL && ARG) { \
/* We have to use _ascii_ here, */\
/* since there seems to be some encoding problems */\
/* in SQLite, which are triggered by comparing */\
/* lower and highercase umlauts for example */\
/* Simple encoding-indepent lowercase prevents it */\
gchar * lower_str = g_ascii_strdown(ARG,-1); \
gchar * sql = sqlite3_mprintf(SQL,lower_str); \
execute(db,sql); \
sqlite3_free(sql); \
g_free(lower_str); \
} \
}
////////////////////////////////////////////////////////
/* Ensure no invalid data comes in */
#define ABORT_ON_FAILED_REQS(REQS,OPT_ARG,ARG) { \
if((REQS & OPT_ARG) == 0 && ARG == NULL) { \
glyr_message(-1,NULL,"Warning: %s != NULL failed",#ARG); \
goto rollback; \
} \
}
////////////////////////////////////////////////////////
#define ADD_CONSTRAINT(TO_CONSTR, FIELDNAME, VARNAME) \
{ \
/* We have to use _ascii_ here, */ \
/* since there seems to be some encoding problems */ \
/* in SQLite, which are triggered by comparing */ \
/* lower and highercase umlauts for example */ \
/* Simple encoding-indepent lowercase prevents it */ \
\
gchar * lower = g_ascii_strdown(VARNAME,-1); \
if(lower != NULL) \
{ \
TO_CONSTR = sqlite3_mprintf("AND %s = '%q'\n",FIELDNAME,lower); \
g_free(lower); \
} \
}
////////////////////////////////////////////////////////
#define CACHE_GET_PROVIDER(cache) (((cache)&&(cache->prov)) ? ((cache)->prov) : "none")
////////////////////////////////////////////////////////
#define SQL_BIND_TEXT(stmt,text,pos) { \
int cpPos = pos; \
if(stmt && text) { \
int rc = sqlite3_bind_text(stmt,cpPos,text,strlen(text) + 1, SQLITE_STATIC); \
if(rc != SQLITE_OK) { \
printf("Could not bind value: %d\n",rc); \
} \
} \
} \
////////////////////////////////////////////////////////
/* How long to wait till returning SQLITE_BUSY */
#define DB_BUSY_WAIT 5000
#define DO_PROFILE false
#if DO_PROFILE
static GTimer * select_callback_timer = NULL;
static float select_callback_spent = 0;
#endif
////////////////////////////////////////////////////////
////////////////////////////////////////////////////////
////////////////////////////////////////////////////////
typedef struct
{
GlyrDatabase * con;
gint deleted;
gint max_delete;
} delete_callback_data;
typedef struct
{
GlyrMemCache ** result;
GlyrQuery * query;
gint counter;
glyr_foreach_callback cb;
void * userptr;
} select_callback_data;
////////////////////////////////////////////////////////
////////////////////////////////////////////////////////
////////////////////////////////////////////////////////
__attribute__ ( (visibility ("default") ) )
GlyrDatabase * glyr_db_init (const char * root_path)
{
GlyrDatabase * to_return = NULL;
#if DO_PROFILE
GTimer * open_db = g_timer_new();
select_callback_timer = g_timer_new();
#endif
if (sqlite3_threadsafe() == FALSE)
{
glyr_message (-1,NULL,"WARNING: Your SQLite version seems not to be threadsafe? \n"
" Expect corrupted data and other weird behaviour!\n");
}
if (root_path != NULL && g_file_test (root_path,G_FILE_TEST_EXISTS) )
{
sqlite3 * db_connection = NULL;
if (g_file_test (root_path,G_FILE_TEST_IS_DIR) )
{
gchar * db_file_path = g_strdup_printf ("%s%s%s",root_path,
(g_str_has_suffix (root_path,G_DIR_SEPARATOR_S) ? "" : G_DIR_SEPARATOR_S),
GLYR_DB_FILENAME);
gint db_open_err = sqlite3_open_v2 (db_file_path,&db_connection,
SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE | SQLITE_OPEN_FULLMUTEX,
NULL);
if (db_open_err == SQLITE_OK)
{
to_return = g_malloc0 (sizeof (GlyrDatabase) );
to_return->root_path = g_strdup (root_path);
to_return->db_handle = db_connection;
sqlite3_busy_timeout (db_connection,DB_BUSY_WAIT);
/* Now create the Tables via sql */
execute (to_return, (char*) sqlcode[SQL_TABLE_DEF]);
}
else
{
glyr_message (-1,NULL,"Connecting to database failed: %s\n",sqlite3_errmsg (db_connection) );
sqlite3_close (db_connection);
}
g_free (db_file_path);
}
else
{
glyr_message (-1,NULL,"Warning: %s is not a directory; Creating DB Structure failed.\n",root_path);
}
}
else
{
glyr_message (-1,NULL,"Warning: %s does not exist; Creating DB Structure failed.\n",root_path);
}
#if DO_PROFILE
g_message ("Time to open DB: %lf\n",g_timer_elapsed (open_db,NULL) );
g_timer_destroy (open_db);
#endif
return to_return;
}
////////////////////////////////////
////////////////////////////////////
////////////////////////////////////
__attribute__ ( (visibility ("default") ) )
void glyr_db_destroy (GlyrDatabase * db_object)
{
if (db_object != NULL)
{
int db_err = sqlite3_close (db_object->db_handle);
if (db_err == SQLITE_OK)
{
g_free ( (gchar*) db_object->root_path);
g_free (db_object);
}
else
{
glyr_message (-1,NULL,"Disconnecting database failed: %s\n",sqlite3_errmsg (db_object->db_handle) );
}
}
}
////////////////////////////////////
////////////////////////////////////
////////////////////////////////////
__attribute__ ( (visibility ("default") ) )
int glyr_db_edit (GlyrDatabase * db, GlyrQuery * query, GlyrMemCache * edited)
{
int result = 0;
if (db && query)
{
result = glyr_db_delete (db,query);
if (result != 0)
{
for (GlyrMemCache * elem = edited; elem; elem = elem->next)
{
glyr_db_insert (db,query,edited);
}
}
}
return result;
}
////////////////////////////////////
////////////////////////////////////
////////////////////////////////////
__attribute__ ( (visibility ("default") ) )
void glyr_db_replace (GlyrDatabase * db, unsigned char * md5sum, GlyrQuery * query, GlyrMemCache * data)
{
if (db != NULL && md5sum != NULL)
{
gchar * sql = "DELETE FROM metadata WHERE data_checksum = ? ;\n";
sqlite3_stmt *stmt = NULL;
sqlite3_prepare_v2 (db->db_handle, sql, strlen (sql) + 1, &stmt, NULL);
sqlite3_bind_blob (stmt, 1, md5sum, 16, SQLITE_STATIC);
if (sqlite3_step (stmt) != SQLITE_DONE)
{
glyr_message (1,query,"Error message: %s\n", sqlite3_errmsg (db->db_handle) );
}
sqlite3_finalize (stmt);
if (data != NULL)
{
glyr_db_insert (db,query,data);
}
}
}
////////////////////////////////////
////////////////////////////////////
////////////////////////////////////
__attribute__ ( (visibility ("default") ) )
gint glyr_db_delete (GlyrDatabase * db, GlyrQuery * query)
{
gint result = 0;
if (db && query)
{
/* Find out which fields are required for this getter */
GLYR_FIELD_REQUIREMENT reqs = glyr_get_requirements (query->type);
/* Spaces in SQL statements just for pretty debug printing */
gchar * artist_constr = "";
if ( (reqs & GLYR_REQUIRES_ARTIST) != 0 && query->artist)
{
ADD_CONSTRAINT (artist_constr,"a.artist_name",query->artist);
}
gchar * album_constr = "";
if ( (reqs & GLYR_REQUIRES_ALBUM ) != 0 && query->album)
{
ADD_CONSTRAINT (album_constr,"b.album_name",query->album);
}
gchar * title_constr = "";
if ( (reqs & GLYR_REQUIRES_TITLE ) != 0 && query->title)
{
ADD_CONSTRAINT (title_constr,"t.title_name",query->title);
}
/* Get a SQL formatted list of enabled providers: IN('lastfm','...') */
gchar * from_argument_list = convert_from_option_to_sql (query);
/* Check if links should be deleted */
gchar * img_url_constr = "";
if (TYPE_IS_IMAGE (query->type) )
{
if (query->download == FALSE)
{
img_url_constr = sqlite3_mprintf ("AND data_type = %d ", GLYR_TYPE_IMG_URL);
}
else
{
img_url_constr = sqlite3_mprintf ("AND NOT data_type = %d ", GLYR_TYPE_IMG_URL);
}
}
gchar * sql = sqlite3_mprintf (sqlcode[SQL_DELETE_SELECT],
query->type, /* Limit to <type> */
title_constr, /* Title Constr, may be empty */
album_constr, /* Album Constr, may be empty */
artist_constr, /* Artist Constr, may be empty */
from_argument_list, /* Provider contraint */
img_url_constr, /* Search for links? */
query->number /* LIMIT to <number> */
);
if (sql != NULL)
{
delete_callback_data cb_data;
cb_data.con = db;
cb_data.deleted = 0;
cb_data.max_delete = query->number;
gchar * err_msg = NULL;
sqlite3_exec (db->db_handle,sql,delete_callback,&cb_data,&err_msg);
if (err_msg != NULL)
{
glyr_message (-1,NULL,"SQL Delete error: %s\n",err_msg);
sqlite3_free (err_msg);
}
sqlite3_free (sql);
result = cb_data.deleted;
}
/**
* Free ressources with according free calls,
*/
if (*artist_constr)
sqlite3_free (artist_constr);
if (*album_constr)
sqlite3_free (album_constr);
if (*title_constr)
sqlite3_free (title_constr);
if (*img_url_constr)
sqlite3_free (img_url_constr);
g_free (from_argument_list);
}
return result;
}
////////////////////////////////////
////////////////////////////////////
////////////////////////////////////
__attribute__ ( (visibility ("default") ) )
void glyr_db_foreach (GlyrDatabase * db, glyr_foreach_callback cb, void * userptr)
{
if (db != NULL && cb != NULL)
{
select_callback_data scb_data;
scb_data.cb = cb;
scb_data.userptr = userptr;
GlyrQuery dummy;
dummy.number = G_MAXINT;
scb_data.query = &dummy;
scb_data.counter = 0;
scb_data.result = NULL;
int rc = SQLITE_OK;
char * err_msg = NULL;
if ( (rc = sqlite3_exec (db->db_handle,sqlcode[SQL_FOREACH],select_callback,&scb_data,&err_msg) ) != SQLITE_OK)
{
if (rc != SQLITE_ABORT)
{
glyr_message (-1,NULL,"SQL Foreach error: %s\n",err_msg);
}
sqlite3_free (err_msg);
}
}
}
////////////////////////////////////
////////////////////////////////////
////////////////////////////////////
__attribute__ ( (visibility ("default") ) )
GlyrMemCache * glyr_db_lookup (GlyrDatabase * db, GlyrQuery * query)
{
GlyrMemCache * result = NULL;
if (db != NULL && query != NULL)
{
GLYR_FIELD_REQUIREMENT reqs = glyr_get_requirements (query->type);
gchar * artist_constr = "";
if ( (reqs & GLYR_REQUIRES_ARTIST) != 0)
{
ADD_CONSTRAINT (artist_constr,"artist_name",query->artist);
}
gchar * album_constr = "";
if ( (reqs & GLYR_REQUIRES_ALBUM ) != 0)
{
ADD_CONSTRAINT (album_constr,"album_name",query->album);
}
gchar * title_constr = "";
if ( (reqs & GLYR_REQUIRES_TITLE ) != 0)
{
ADD_CONSTRAINT (title_constr,"title_name",query->title);
}
gchar * from_argument_list = convert_from_option_to_sql (query);
gchar * img_url_constr = "";
if (TYPE_IS_IMAGE (query->type) )
{
if (query->download == FALSE)
{
img_url_constr = sqlite3_mprintf ("AND data_type = %d ", GLYR_TYPE_IMG_URL);
}
else
{
img_url_constr = sqlite3_mprintf ("AND NOT data_type = %d ", GLYR_TYPE_IMG_URL);
}
}
gchar * sql = sqlite3_mprintf (sqlcode[SQL_LOOKUP],
query->type,
title_constr,
album_constr,
artist_constr,
img_url_constr,
from_argument_list,
query->number
);
if (sql != NULL)
{
select_callback_data data;
data.result = &result;
data.query = query;
data.counter = 0;
data.cb = NULL;
data.userptr = NULL;
gchar * err_msg = NULL;
sqlite3_exec (db->db_handle,sql,select_callback,&data,&err_msg);
if (err_msg != NULL)
{
glyr_message (-1,NULL,"glyr_db_lookup: %s\n",err_msg);
sqlite3_free (err_msg);
}
sqlite3_free (sql);
}
#if DO_PROFILE
g_message ("Spent %.5f Seconds in Selectcallback.\n",select_callback_spent);
select_callback_spent = 0;
#endif
if (*artist_constr)
{
sqlite3_free (artist_constr);
}
if (*album_constr)
{
sqlite3_free (album_constr);
}
if (*title_constr)
{
sqlite3_free (title_constr);
}
g_free (from_argument_list);
if (*img_url_constr != '\0')
{
sqlite3_free (img_url_constr);
}
}
return result;
}
////////////////////////////////////
////////////////////////////////////
////////////////////////////////////
__attribute__ ( (visibility ("default") ) )
void glyr_db_insert (GlyrDatabase * db, GlyrQuery * q, GlyrMemCache * cache)
{
if (db && q && cache)
{
GLYR_FIELD_REQUIREMENT reqs = glyr_get_requirements (q->type);
execute (db,"BEGIN IMMEDIATE;");
if ( (reqs & GLYR_REQUIRES_ARTIST) || (reqs & GLYR_OPTIONAL_ARTIST) )
{
ABORT_ON_FAILED_REQS (reqs,GLYR_OPTIONAL_ARTIST,q->artist);
INSERT_STRING ("INSERT OR IGNORE INTO artists VALUES('%q');",q->artist);
}
if ( (reqs & GLYR_REQUIRES_ALBUM) || (reqs & GLYR_OPTIONAL_ALBUM) )
{
ABORT_ON_FAILED_REQS (reqs,GLYR_OPTIONAL_ALBUM,q->album);
INSERT_STRING ("INSERT OR IGNORE INTO albums VALUES('%q');",q->album);
}
if ( (reqs & GLYR_REQUIRES_TITLE) || (reqs & GLYR_OPTIONAL_TITLE) )
{
ABORT_ON_FAILED_REQS (reqs,GLYR_OPTIONAL_TITLE,q->title);
INSERT_STRING ("INSERT OR IGNORE INTO titles VALUES('%q');",q->title);
}
gchar * provider = CACHE_GET_PROVIDER (cache);
INSERT_STRING ("INSERT OR IGNORE INTO providers VALUES('%q');",provider);
insert_cache_data (db,q,cache);
rollback:
execute (db,"COMMIT;");
}
}
////////////////////////////////////
////////////////////////////////////
////////////////////////////////////
__attribute__ ( (visibility ("default") ) )
GlyrMemCache * glyr_db_make_dummy (void)
{
GlyrMemCache * c = glyr_cache_new();
glyr_cache_set_data (c,g_strdup ("[dummy]"),-1);
c->rating = -1;
return c;
}
////////////////////////////////////
////////////////////////////////////
////////////////////////////////////
// --------- INTERNALS ------------ //
static void execute (GlyrDatabase * db, const gchar * sql_statement)
{
if (db && sql_statement)
{
char * err_msg = NULL;
sqlite3_exec (db->db_handle,sql_statement,NULL,NULL,&err_msg);
if (err_msg != NULL)
{
glyr_message (-1,NULL,"glyr_db_execute: SQL error: %s\n", err_msg);
sqlite3_free (err_msg);
}
}
}
////////////////////////////////////
////////////////////////////////////
////////////////////////////////////
/**
* Return the current time as double:
* <seconds>.<microseconds/one_second>
*/
static double get_current_time (void)
{
struct timeval tim;
gettimeofday (&tim, NULL);
return (double) tim.tv_sec + ( (double) tim.tv_usec/1e6);
}
////////////////////////////////////
static void insert_cache_data (GlyrDatabase * db, GlyrQuery * query, GlyrMemCache * cache)
{
if (db && query && cache)
{
int pos = 1;
char * sql = sqlite3_mprintf (sqlcode[SQL_INSERT_CACHE],
query->artist,
query->album,
query->title,
CACHE_GET_PROVIDER (cache),
cache->img_format
);
sqlite3_stmt *stmt = NULL;
sqlite3_prepare_v2 (db->db_handle, sql, strlen (sql) + 1, &stmt, NULL);
SQL_BIND_TEXT (stmt,cache->dsrc,pos++);
sqlite3_bind_int (stmt, pos++, cache->duration);
sqlite3_bind_int (stmt, pos++, query->type);
sqlite3_bind_int (stmt, pos++, cache->type);
sqlite3_bind_int (stmt, pos++, cache->size);
sqlite3_bind_int (stmt, pos++, cache->is_image);
sqlite3_bind_blob (stmt,pos++, cache->md5sum, sizeof cache->md5sum, SQLITE_STATIC);
if (cache->data != NULL)
{
sqlite3_bind_blob (stmt, pos++, cache->data, cache->size, SQLITE_STATIC);
}
else
{
glyr_message (1,query,"glyr: Warning: Attempting to insert cache with missing data!\n");
}
sqlite3_bind_int (stmt, pos++, cache->rating);
sqlite3_bind_double (stmt,pos++, get_current_time() );
if (sqlite3_step (stmt) != SQLITE_DONE)
{
glyr_message (1,query,"glyr_db_insert: SQL failure: %s\n", sqlite3_errmsg (db->db_handle) );
}
sqlite3_finalize (stmt);
sqlite3_free (sql);
}
}
////////////////////////////////////
////////////////////////////////////
////////////////////////////////////
#define DEBUG_LIST false
static void add_to_cache_list (GlyrMemCache ** list, GlyrMemCache * to_add)
{
if (to_add && list)
{
GlyrMemCache * head = *list;
if (head == NULL)
{
/* Initialize list */
*list = to_add;
}
else
{
/* Find rating in list
* head will store the first non-matchin item,
* tail = head->prev
* */
GlyrMemCache * tail = head;
while (head && head->rating > to_add->rating)
{
tail = head;
head = head->next;
}
/* Now see what timestamp we have,
* and sort it accordingly, younger
* caches (== higher timestamp), are sorted
* at the start
*/
if (head != NULL)
{
int last_rating = head->rating;
while (head && head->rating == last_rating && head->timestamp > to_add->timestamp)
{
GlyrMemCache * p = head->next;
if (p && p->rating == last_rating)
{
tail = head;
head = p;
}
else if (p == NULL)
{
tail = head;
head = p;
}
else break;
}
}
/* Check if we're at the end of the list,
* If so just append it,
* else we insert to_add before head
*/
g_assert (tail);
if (head != NULL)
{
GlyrMemCache * prev = head->prev;
if (prev != NULL)
prev->next = to_add;
to_add->prev = prev;
to_add->next = head;
head->prev = to_add;
if (prev == NULL)
*list = to_add;
}
else /* We're at the end */
{
tail->next = to_add;
to_add->prev = tail;
}
}
}
#if DEBUG_LIST
GlyrMemCache * p = *list;
while (p != NULL)
{
char * surr = (to_add == p) ? "*" : "|";
g_printerr ("%s(%d|%2.10f)%s %c ",surr,p->rating,p->timestamp,surr, (p->next) ? '-' : ' ');
p = p->next;
}
puts ("");
#endif
}
////////////////////////////////////
////////////////////////////////////
////////////////////////////////////
/* Convert a single result from the DB to an actual Cache */
static int select_callback (void * result, int argc, char ** argv, char ** azColName)
{
#if DO_PROFILE
g_timer_start (select_callback_timer);
#endif
int rc = 0;
select_callback_data * data = result;
GlyrMemCache ** list = data->result;
if (argc >= 15 && data->counter < data->query->number)
{
GlyrMemCache * cache = DL_init();
if (cache != NULL)
{
cache->prov = g_strdup (argv[3]);
cache->dsrc = g_strdup (argv[4]);
cache->img_format = g_strdup (argv[5]);
cache->duration = (argv[6] ? strtol (argv[6],NULL,10) : 0);
cache->type = (argv[8] ? strtol (argv[8],NULL,10) : 0);
cache->size = (argv[9] ? strtol (argv[9],NULL,10) : 0);
cache->is_image = (argv[10] ? strtol (argv[10],NULL,10) : 0);
if (argv[11] != NULL)
{
memcpy (cache->md5sum,argv[11],16);
}
if (argv[12] != NULL && cache->size > 0)
{
cache->data = g_malloc0 (cache->size + 1);
memcpy (cache->data,argv[12],cache->size);
cache->data[cache->size] = 0;
}
cache->rating = (argv[13] ? strtol (argv[13],NULL,10) : 0);
/* Timestamp */
if (argv[14] != NULL)
{
/* Normal strtod() cuts off part behin the comma.. */
cache->timestamp = (argv[14] ? g_ascii_strtod (argv[14],NULL) : 0);
}
/* We're in the cache, so this one was cached.. :) */
cache->cached = TRUE;
if (list != NULL)
{
add_to_cache_list (list,cache);
}
else if (data->cb != NULL && cache)
{
GlyrQuery q;
glyr_query_init (&q);
if (argv[7] != NULL)
{
GLYR_GET_TYPE type = strtol (argv[7],NULL,10);
glyr_opt_type (&q,type);
}
glyr_opt_artist (&q,argv[0]);
glyr_opt_album (&q, argv[1]);
glyr_opt_title (&q, argv[2]);
rc = data->cb (&q,cache,data->userptr);
glyr_query_destroy (&q);
DL_free (cache);
}
}
}
data->counter++;
#if DO_PROFILE
g_timer_stop (select_callback_timer);
select_callback_spent += g_timer_elapsed (select_callback_timer,NULL);
#endif
return rc;
}
////////////////////////////////////
////////////////////////////////////
////////////////////////////////////
static gchar * convert_from_option_to_sql (GlyrQuery * q)
{
gchar * result = g_strdup ("'none'");
for (GList * elem = r_getSList(); elem; elem = elem->next)
{
MetaDataSource * item = elem->data;
if (item && (q->type == item->type || item->type == GLYR_GET_ANY) )
{
if (provider_is_enabled (q,item) == TRUE)
{
gchar * old_mem = result;
result = g_strdup_printf ("%s%s'%s'",result, (*result) ? "," : "",item->name);
g_free (old_mem);
}
}
}
return result;
}
////////////////////////////////////
////////////////////////////////////
////////////////////////////////////
static int delete_callback (void * result, int argc, char ** argv, char ** azColName)
{
delete_callback_data * data = result;
if (argc >= 4 && result && data->max_delete > data->deleted)
{
/* God, this is so silly.. SQL, why you don't like " = null"
* I can't think of any easier way to do this, tell me if you found one
*/
gchar * sql_delete = sqlite3_mprintf (sqlcode[SQL_ACTUAL_DELETE],
argv[0] ? "=" : " IS ", argv[0] ? argv[0] : "NULL",
argv[1] ? "=" : " IS ", argv[1] ? argv[1] : "NULL",
argv[2] ? "=" : " IS ", argv[2] ? argv[2] : "NULL",
argv[3] ? "=" : " IS ", argv[3] ? argv[3] : "NULL",
argv[4] ? "=" : " IS ", argv[4] ? argv[4] : "NULL");
if (sql_delete != NULL)
{
execute (data->con,sql_delete);
sqlite3_free (sql_delete);
data->deleted++;
}
}
return 0;
}
|
