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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* camel-imap-folder.c: class for an imap folder */
/*
* Authors:
* Sankar P <psankar@novell.com>
* Srinivasa Ragavan <sragavan@novell.com>
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
* This library 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.
*
* This library 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 Lesser General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "camel-db.h"
#include "camel-string-utils.h"
#include <config.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <glib/gi18n-lib.h>
#include "camel-debug.h"
#include "camel-object.h"
/* how long to wait before invoking sync on the file */
#define SYNC_TIMEOUT_SECONDS 5
#define READER_LOCK(cdb) g_rw_lock_reader_lock (&cdb->priv->rwlock)
#define READER_UNLOCK(cdb) g_rw_lock_reader_unlock (&cdb->priv->rwlock)
#define WRITER_LOCK(cdb) g_rw_lock_writer_lock (&cdb->priv->rwlock)
#define WRITER_UNLOCK(cdb) g_rw_lock_writer_unlock (&cdb->priv->rwlock)
static sqlite3_vfs *old_vfs = NULL;
static GThreadPool *sync_pool = NULL;
typedef struct {
sqlite3_file parent;
sqlite3_file *old_vfs_file; /* pointer to old_vfs' file */
GRecMutex sync_mutex;
guint timeout_id;
gint flags;
/* Do know how many syncs are pending, to not close
the file before the last sync is over */
guint pending_syncs;
GMutex pending_syncs_lock;
GCond pending_syncs_cond;
} CamelSqlite3File;
static gint
call_old_file_Sync (CamelSqlite3File *cFile,
gint flags)
{
g_return_val_if_fail (old_vfs != NULL, SQLITE_ERROR);
g_return_val_if_fail (cFile != NULL, SQLITE_ERROR);
g_return_val_if_fail (cFile->old_vfs_file->pMethods != NULL, SQLITE_ERROR);
return cFile->old_vfs_file->pMethods->xSync (cFile->old_vfs_file, flags);
}
typedef struct {
GCond cond;
GMutex mutex;
gboolean is_set;
} SyncDone;
struct SyncRequestData
{
CamelSqlite3File *cFile;
guint32 flags;
SyncDone *done; /* not NULL when waiting for a finish; will be freed by the caller */
};
static void
sync_request_thread_cb (gpointer task_data,
gpointer null_data)
{
struct SyncRequestData *sync_data = task_data;
SyncDone *done;
g_return_if_fail (sync_data != NULL);
g_return_if_fail (sync_data->cFile != NULL);
call_old_file_Sync (sync_data->cFile, sync_data->flags);
g_mutex_lock (&sync_data->cFile->pending_syncs_lock);
g_warn_if_fail (sync_data->cFile->pending_syncs > 0);
sync_data->cFile->pending_syncs--;
if (!sync_data->cFile->pending_syncs)
g_cond_signal (&sync_data->cFile->pending_syncs_cond);
g_mutex_unlock (&sync_data->cFile->pending_syncs_lock);
done = sync_data->done;
g_free (sync_data);
if (done != NULL) {
g_mutex_lock (&done->mutex);
done->is_set = TRUE;
g_cond_broadcast (&done->cond);
g_mutex_unlock (&done->mutex);
}
}
static void
sync_push_request (CamelSqlite3File *cFile,
gboolean wait_for_finish)
{
struct SyncRequestData *data;
SyncDone *done = NULL;
GError *error = NULL;
g_return_if_fail (cFile != NULL);
g_return_if_fail (sync_pool != NULL);
g_rec_mutex_lock (&cFile->sync_mutex);
if (!cFile->flags) {
/* nothing to sync, might be when xClose is called
* without any pending xSync request */
g_rec_mutex_unlock (&cFile->sync_mutex);
return;
}
if (wait_for_finish) {
done = g_slice_new (SyncDone);
g_cond_init (&done->cond);
g_mutex_init (&done->mutex);
done->is_set = FALSE;
}
data = g_new0 (struct SyncRequestData, 1);
data->cFile = cFile;
data->flags = cFile->flags;
data->done = done;
cFile->flags = 0;
g_mutex_lock (&cFile->pending_syncs_lock);
cFile->pending_syncs++;
g_mutex_unlock (&cFile->pending_syncs_lock);
g_rec_mutex_unlock (&cFile->sync_mutex);
g_thread_pool_push (sync_pool, data, &error);
if (error) {
g_warning ("%s: Failed to push to thread pool: %s\n", G_STRFUNC, error->message);
g_error_free (error);
if (done != NULL) {
g_cond_clear (&done->cond);
g_mutex_clear (&done->mutex);
g_slice_free (SyncDone, done);
}
return;
}
if (done != NULL) {
g_mutex_lock (&done->mutex);
while (!done->is_set)
g_cond_wait (&done->cond, &done->mutex);
g_mutex_unlock (&done->mutex);
g_cond_clear (&done->cond);
g_mutex_clear (&done->mutex);
g_slice_free (SyncDone, done);
}
}
static gboolean
sync_push_request_timeout (CamelSqlite3File *cFile)
{
g_rec_mutex_lock (&cFile->sync_mutex);
if (cFile->timeout_id != 0) {
sync_push_request (cFile, FALSE);
cFile->timeout_id = 0;
}
g_rec_mutex_unlock (&cFile->sync_mutex);
return FALSE;
}
#define def_subclassed(_nm, _params, _call) \
static gint \
camel_sqlite3_file_ ## _nm _params \
{ \
CamelSqlite3File *cFile; \
\
g_return_val_if_fail (old_vfs != NULL, SQLITE_ERROR); \
g_return_val_if_fail (pFile != NULL, SQLITE_ERROR); \
\
cFile = (CamelSqlite3File *) pFile; \
g_return_val_if_fail (cFile->old_vfs_file->pMethods != NULL, SQLITE_ERROR); \
return cFile->old_vfs_file->pMethods->_nm _call; \
}
#define def_subclassed_void(_nm, _params, _call) \
static void \
camel_sqlite3_file_ ## _nm _params \
{ \
CamelSqlite3File *cFile; \
\
g_return_if_fail (old_vfs != NULL); \
g_return_if_fail (pFile != NULL); \
\
cFile = (CamelSqlite3File *) pFile; \
g_return_if_fail (cFile->old_vfs_file->pMethods != NULL); \
cFile->old_vfs_file->pMethods->_nm _call; \
}
def_subclassed (xRead, (sqlite3_file *pFile, gpointer pBuf, gint iAmt, sqlite3_int64 iOfst), (cFile->old_vfs_file, pBuf, iAmt, iOfst))
def_subclassed (xWrite, (sqlite3_file *pFile, gconstpointer pBuf, gint iAmt, sqlite3_int64 iOfst), (cFile->old_vfs_file, pBuf, iAmt, iOfst))
def_subclassed (xTruncate, (sqlite3_file *pFile, sqlite3_int64 size), (cFile->old_vfs_file, size))
def_subclassed (xFileSize, (sqlite3_file *pFile, sqlite3_int64 *pSize), (cFile->old_vfs_file, pSize))
def_subclassed (xLock, (sqlite3_file *pFile, gint lockType), (cFile->old_vfs_file, lockType))
def_subclassed (xUnlock, (sqlite3_file *pFile, gint lockType), (cFile->old_vfs_file, lockType))
def_subclassed (xFileControl, (sqlite3_file *pFile, gint op, gpointer pArg), (cFile->old_vfs_file, op, pArg))
def_subclassed (xSectorSize, (sqlite3_file *pFile), (cFile->old_vfs_file))
def_subclassed (xDeviceCharacteristics, (sqlite3_file *pFile), (cFile->old_vfs_file))
def_subclassed (xShmMap, (sqlite3_file *pFile, gint iPg, gint pgsz, gint n, void volatile **arr), (cFile->old_vfs_file, iPg, pgsz, n, arr))
def_subclassed (xShmLock, (sqlite3_file *pFile, gint offset, gint n, gint flags), (cFile->old_vfs_file, offset, n, flags))
def_subclassed_void (xShmBarrier, (sqlite3_file *pFile), (cFile->old_vfs_file))
def_subclassed (xShmUnmap, (sqlite3_file *pFile, gint deleteFlag), (cFile->old_vfs_file, deleteFlag))
def_subclassed (xFetch, (sqlite3_file *pFile, sqlite3_int64 iOfst, int iAmt, void **pp), (cFile->old_vfs_file, iOfst, iAmt, pp))
def_subclassed (xUnfetch, (sqlite3_file *pFile, sqlite3_int64 iOfst, void *p), (cFile->old_vfs_file, iOfst, p))
#undef def_subclassed
static gint
camel_sqlite3_file_xCheckReservedLock (sqlite3_file *pFile,
gint *pResOut)
{
CamelSqlite3File *cFile;
g_return_val_if_fail (old_vfs != NULL, SQLITE_ERROR);
g_return_val_if_fail (pFile != NULL, SQLITE_ERROR);
cFile = (CamelSqlite3File *) pFile;
g_return_val_if_fail (cFile->old_vfs_file->pMethods != NULL, SQLITE_ERROR);
/* check version in runtime */
if (sqlite3_libversion_number () < 3006000)
return ((gint (*)(sqlite3_file *)) (cFile->old_vfs_file->pMethods->xCheckReservedLock)) (cFile->old_vfs_file);
else
return ((gint (*)(sqlite3_file *, gint *)) (cFile->old_vfs_file->pMethods->xCheckReservedLock)) (cFile->old_vfs_file, pResOut);
}
static gint
camel_sqlite3_file_xClose (sqlite3_file *pFile)
{
CamelSqlite3File *cFile;
gint res;
g_return_val_if_fail (old_vfs != NULL, SQLITE_ERROR);
g_return_val_if_fail (pFile != NULL, SQLITE_ERROR);
cFile = (CamelSqlite3File *) pFile;
g_rec_mutex_lock (&cFile->sync_mutex);
/* Cancel any pending sync requests. */
if (cFile->timeout_id > 0) {
g_source_remove (cFile->timeout_id);
cFile->timeout_id = 0;
}
g_rec_mutex_unlock (&cFile->sync_mutex);
/* Make the last sync. */
sync_push_request (cFile, TRUE);
g_mutex_lock (&cFile->pending_syncs_lock);
while (cFile->pending_syncs > 0) {
g_cond_wait (&cFile->pending_syncs_cond, &cFile->pending_syncs_lock);
}
g_mutex_unlock (&cFile->pending_syncs_lock);
if (cFile->old_vfs_file->pMethods)
res = cFile->old_vfs_file->pMethods->xClose (cFile->old_vfs_file);
else
res = SQLITE_OK;
g_free (cFile->old_vfs_file);
cFile->old_vfs_file = NULL;
g_rec_mutex_clear (&cFile->sync_mutex);
g_mutex_clear (&cFile->pending_syncs_lock);
g_cond_clear (&cFile->pending_syncs_cond);
return res;
}
static gint
camel_sqlite3_file_xSync (sqlite3_file *pFile,
gint flags)
{
CamelSqlite3File *cFile;
g_return_val_if_fail (old_vfs != NULL, SQLITE_ERROR);
g_return_val_if_fail (pFile != NULL, SQLITE_ERROR);
cFile = (CamelSqlite3File *) pFile;
g_rec_mutex_lock (&cFile->sync_mutex);
/* If a sync request is already scheduled, accumulate flags. */
cFile->flags |= flags;
/* Cancel any pending sync requests. */
if (cFile->timeout_id > 0)
g_source_remove (cFile->timeout_id);
/* Wait SYNC_TIMEOUT_SECONDS before we actually sync. */
cFile->timeout_id = g_timeout_add_seconds (
SYNC_TIMEOUT_SECONDS, (GSourceFunc)
sync_push_request_timeout, cFile);
g_source_set_name_by_id (
cFile->timeout_id,
"[camel] sync_push_request_timeout");
g_rec_mutex_unlock (&cFile->sync_mutex);
return SQLITE_OK;
}
static gint
camel_sqlite3_vfs_xOpen (sqlite3_vfs *pVfs,
const gchar *zPath,
sqlite3_file *pFile,
gint flags,
gint *pOutFlags)
{
static GRecMutex only_once_lock;
static sqlite3_io_methods io_methods = {0};
CamelSqlite3File *cFile;
gint res;
g_return_val_if_fail (old_vfs != NULL, -1);
g_return_val_if_fail (pFile != NULL, -1);
cFile = (CamelSqlite3File *) pFile;
cFile->old_vfs_file = g_malloc0 (old_vfs->szOsFile);
res = old_vfs->xOpen (old_vfs, zPath, cFile->old_vfs_file, flags, pOutFlags);
if (res != SQLITE_OK) {
g_free (cFile->old_vfs_file);
return res;
}
g_rec_mutex_init (&cFile->sync_mutex);
g_mutex_init (&cFile->pending_syncs_lock);
g_cond_init (&cFile->pending_syncs_cond);
cFile->pending_syncs = 0;
g_rec_mutex_lock (&only_once_lock);
if (!sync_pool)
sync_pool = g_thread_pool_new (sync_request_thread_cb, NULL, 2, FALSE, NULL);
/* cFile->old_vfs_file->pMethods is NULL when open failed for some reason,
* thus do not initialize our structure when do not know the version */
if (io_methods.xClose == NULL && cFile->old_vfs_file->pMethods) {
/* initialize our subclass function only once */
io_methods.iVersion = cFile->old_vfs_file->pMethods->iVersion;
/* check version in compile time */
#if SQLITE_VERSION_NUMBER < 3006000
io_methods.xCheckReservedLock = (gint (*)(sqlite3_file *)) camel_sqlite3_file_xCheckReservedLock;
#else
io_methods.xCheckReservedLock = camel_sqlite3_file_xCheckReservedLock;
#endif
#define use_subclassed(x) io_methods.x = camel_sqlite3_file_ ## x
use_subclassed (xClose);
use_subclassed (xRead);
use_subclassed (xWrite);
use_subclassed (xTruncate);
use_subclassed (xSync);
use_subclassed (xFileSize);
use_subclassed (xLock);
use_subclassed (xUnlock);
use_subclassed (xFileControl);
use_subclassed (xSectorSize);
use_subclassed (xDeviceCharacteristics);
if (io_methods.iVersion > 1) {
use_subclassed (xShmMap);
use_subclassed (xShmLock);
use_subclassed (xShmBarrier);
use_subclassed (xShmUnmap);
}
if (io_methods.iVersion > 2) {
use_subclassed (xFetch);
use_subclassed (xUnfetch);
}
if (io_methods.iVersion > 3) {
g_warning ("%s: Unchecked IOMethods version %d, downgrading to version 3", G_STRFUNC, io_methods.iVersion);
io_methods.iVersion = 3;
}
#undef use_subclassed
}
g_rec_mutex_unlock (&only_once_lock);
cFile->parent.pMethods = &io_methods;
return res;
}
static gpointer
init_sqlite_vfs (void)
{
static sqlite3_vfs vfs = { 0 };
old_vfs = sqlite3_vfs_find (NULL);
g_return_val_if_fail (old_vfs != NULL, NULL);
memcpy (&vfs, old_vfs, sizeof (sqlite3_vfs));
vfs.szOsFile = sizeof (CamelSqlite3File);
vfs.zName = "camel_sqlite3_vfs";
vfs.xOpen = camel_sqlite3_vfs_xOpen;
sqlite3_vfs_register (&vfs, 1);
return NULL;
}
#define d(x) if (camel_debug("sqlite")) x
#define START(stmt) \
if (camel_debug ("dbtime")) { \
g_print ( \
"\n===========\n" \
"DB SQL operation [%s] started\n", stmt); \
if (!cdb->priv->timer) { \
cdb->priv->timer = g_timer_new (); \
} else { \
g_timer_reset (cdb->priv->timer); \
} \
}
#define END \
if (camel_debug ("dbtime")) { \
g_timer_stop (cdb->priv->timer); \
g_print ( \
"DB Operation ended. " \
"Time Taken : %f\n###########\n", \
g_timer_elapsed (cdb->priv->timer, NULL)); \
}
#define STARTTS(stmt) \
if (camel_debug ("dbtimets")) { \
g_print ( \
"\n===========\n" \
"DB SQL operation [%s] started\n", stmt); \
if (!cdb->priv->timer) { \
cdb->priv->timer = g_timer_new (); \
} else { \
g_timer_reset (cdb->priv->timer); \
} \
}
#define ENDTS \
if (camel_debug ("dbtimets")) { \
g_timer_stop (cdb->priv->timer); \
g_print ( \
"DB Operation ended. " \
"Time Taken : %f\n###########\n", \
g_timer_elapsed (cdb->priv->timer, NULL)); \
}
struct _CamelDBPrivate {
GTimer *timer;
GRWLock rwlock;
gchar *file_name;
gboolean transaction_is_on;
};
/**
* cdb_sql_exec
* @db:
* @stmt:
* @error:
*
* Callers should hold the lock
**/
static gint
cdb_sql_exec (sqlite3 *db,
const gchar *stmt,
gint (*callback)(gpointer ,gint,gchar **,gchar **),
gpointer data,
GError **error)
{
gchar *errmsg = NULL;
gint ret = -1, retries = 0;
d (g_print ("Camel SQL Exec:\n%s\n", stmt));
ret = sqlite3_exec (db, stmt, callback, data, &errmsg);
while (ret == SQLITE_BUSY || ret == SQLITE_LOCKED || ret == -1) {
/* try for ~15 seconds, then give up */
if (retries > 150)
break;
retries++;
if (errmsg) {
sqlite3_free (errmsg);
errmsg = NULL;
}
g_thread_yield ();
g_usleep (100 * 1000); /* Sleep for 100 ms */
ret = sqlite3_exec (db, stmt, NULL, NULL, &errmsg);
}
if (ret != SQLITE_OK) {
d (g_print ("Error in SQL EXEC statement: %s [%s].\n", stmt, errmsg));
g_set_error (
error, CAMEL_ERROR,
CAMEL_ERROR_GENERIC, "%s", errmsg);
sqlite3_free (errmsg);
errmsg = NULL;
return -1;
}
if (errmsg) {
sqlite3_free (errmsg);
errmsg = NULL;
}
return 0;
}
/* checks whether string 'where' contains whole word 'what',
* case insensitively (ascii, not utf8, same as 'LIKE' in SQLite3)
*/
static void
cdb_match_func (sqlite3_context *ctx,
gint nArgs,
sqlite3_value **values)
{
gboolean matches = FALSE;
const gchar *what, *where;
g_return_if_fail (ctx != NULL);
g_return_if_fail (nArgs == 2);
g_return_if_fail (values != NULL);
what = (const gchar *) sqlite3_value_text (values[0]);
where = (const gchar *) sqlite3_value_text (values[1]);
if (what && where && !*what) {
matches = TRUE;
} else if (what && where) {
gboolean word = TRUE;
gint i, j;
for (i = 0, j = 0; where[i] && !matches; i++) {
gchar c = where[i];
if (c == ' ') {
word = TRUE;
j = 0;
} else if (word && tolower (c) == tolower (what[j])) {
j++;
if (what[j] == 0 && (where[i + 1] == 0 || isspace (where[i + 1])))
matches = TRUE;
} else {
word = FALSE;
}
}
}
sqlite3_result_int (ctx, matches ? 1 : 0);
}
/**
* camel_db_open:
*
* Since: 2.24
**/
CamelDB *
camel_db_open (const gchar *path,
GError **error)
{
static GOnce vfs_once = G_ONCE_INIT;
CamelDB *cdb;
sqlite3 *db;
gint ret;
g_once (&vfs_once, (GThreadFunc) init_sqlite_vfs, NULL);
CAMEL_DB_USE_SHARED_CACHE;
ret = sqlite3_open (path, &db);
if (ret) {
if (!db) {
g_set_error (
error, CAMEL_ERROR,
CAMEL_ERROR_GENERIC,
_("Insufficient memory"));
} else {
const gchar *errmsg;
errmsg = sqlite3_errmsg (db);
d (g_print ("Can't open database %s: %s\n", path, errmsg));
g_set_error (
error, CAMEL_ERROR,
CAMEL_ERROR_GENERIC, "%s", errmsg);
sqlite3_close (db);
}
return NULL;
}
cdb = g_new (CamelDB, 1);
cdb->db = db;
cdb->priv = g_new (CamelDBPrivate, 1);
cdb->priv->file_name = g_strdup (path);
g_rw_lock_init (&cdb->priv->rwlock);
cdb->priv->timer = NULL;
d (g_print ("\nDatabase succesfully opened \n"));
sqlite3_create_function (db, "MATCH", 2, SQLITE_UTF8, NULL, cdb_match_func, NULL, NULL);
/* Which is big / costlier ? A Stack frame or a pointer */
if (g_getenv ("CAMEL_SQLITE_DEFAULT_CACHE_SIZE") != NULL) {
gchar *cache = NULL;
cache = g_strdup_printf ("PRAGMA cache_size=%s", g_getenv ("CAMEL_SQLITE_DEFAULT_CACHE_SIZE"));
camel_db_command (cdb, cache, NULL);
g_free (cache);
}
camel_db_command (cdb, "ATTACH DATABASE ':memory:' AS mem", NULL);
if (g_getenv ("CAMEL_SQLITE_IN_MEMORY") != NULL) {
/* Optionally turn off Journaling, this gets over fsync issues, but could be risky */
camel_db_command (cdb, "PRAGMA main.journal_mode = off", NULL);
camel_db_command (cdb, "PRAGMA temp_store = memory", NULL);
}
sqlite3_busy_timeout (cdb->db, CAMEL_DB_SLEEP_INTERVAL);
return cdb;
}
/**
* camel_db_clone:
*
* Since: 2.26
**/
CamelDB *
camel_db_clone (CamelDB *cdb,
GError **error)
{
return camel_db_open (cdb->priv->file_name, error);
}
/**
* camel_db_close:
*
* Since: 2.24
**/
void
camel_db_close (CamelDB *cdb)
{
if (cdb) {
sqlite3_close (cdb->db);
g_rw_lock_clear (&cdb->priv->rwlock);
g_free (cdb->priv->file_name);
g_free (cdb->priv);
g_free (cdb);
d (g_print ("\nDatabase succesfully closed \n"));
}
}
/**
* camel_db_set_collate:
*
* Since: 2.24
**/
gint
camel_db_set_collate (CamelDB *cdb,
const gchar *col,
const gchar *collate,
CamelDBCollate func)
{
gint ret = 0;
if (!cdb)
return 0;
WRITER_LOCK (cdb);
d (g_print ("Creating Collation %s on %s with %p\n", collate, col, (gpointer) func));
if (collate && func)
ret = sqlite3_create_collation (cdb->db, collate, SQLITE_UTF8, NULL, func);
WRITER_UNLOCK (cdb);
return ret;
}
/**
* camel_db_command:
*
* Since: 2.24
**/
gint
camel_db_command (CamelDB *cdb,
const gchar *stmt,
GError **error)
{
gint ret;
if (!cdb)
return TRUE;
WRITER_LOCK (cdb);
START (stmt);
ret = cdb_sql_exec (cdb->db, stmt, NULL, NULL, error);
END;
WRITER_UNLOCK (cdb);
return ret;
}
/**
* camel_db_begin_transaction:
*
* Since: 2.24
**/
gint
camel_db_begin_transaction (CamelDB *cdb,
GError **error)
{
if (!cdb)
return -1;
WRITER_LOCK (cdb);
STARTTS ("BEGIN");
cdb->priv->transaction_is_on = TRUE;
return (cdb_sql_exec (cdb->db, "BEGIN", NULL, NULL, error));
}
/**
* camel_db_end_transaction:
*
* Since: 2.24
**/
gint
camel_db_end_transaction (CamelDB *cdb,
GError **error)
{
gint ret;
if (!cdb)
return -1;
ret = cdb_sql_exec (cdb->db, "COMMIT", NULL, NULL, error);
cdb->priv->transaction_is_on = FALSE;
ENDTS;
WRITER_UNLOCK (cdb);
CAMEL_DB_RELEASE_SQLITE_MEMORY;
return ret;
}
/**
* camel_db_abort_transaction:
*
* Since: 2.24
**/
gint
camel_db_abort_transaction (CamelDB *cdb,
GError **error)
{
gint ret;
ret = cdb_sql_exec (cdb->db, "ROLLBACK", NULL, NULL, error);
cdb->priv->transaction_is_on = FALSE;
WRITER_UNLOCK (cdb);
CAMEL_DB_RELEASE_SQLITE_MEMORY;
return ret;
}
/**
* camel_db_add_to_transaction:
*
* Since: 2.24
**/
gint
camel_db_add_to_transaction (CamelDB *cdb,
const gchar *stmt,
GError **error)
{
if (!cdb)
return -1;
g_assert (cdb->priv->transaction_is_on == TRUE);
return (cdb_sql_exec (cdb->db, stmt, NULL, NULL, error));
}
/**
* camel_db_transaction_command:
*
* Since: 2.24
**/
gint
camel_db_transaction_command (CamelDB *cdb,
GList *qry_list,
GError **error)
{
gint ret;
const gchar *query;
if (!cdb)
return -1;
WRITER_LOCK (cdb);
STARTTS ("BEGIN");
ret = cdb_sql_exec (cdb->db, "BEGIN", NULL, NULL, error);
if (ret)
goto end;
while (qry_list) {
query = qry_list->data;
ret = cdb_sql_exec (cdb->db, query, NULL, NULL, error);
if (ret)
goto end;
qry_list = g_list_next (qry_list);
}
ret = cdb_sql_exec (cdb->db, "COMMIT", NULL, NULL, error);
ENDTS;
end:
WRITER_UNLOCK (cdb);
return ret;
}
static gint
count_cb (gpointer data,
gint argc,
gchar **argv,
gchar **azColName)
{
gint i;
for (i = 0; i < argc; i++) {
if (strstr (azColName[i], "COUNT")) {
*(guint32 *)data = argv [i] ? strtoul (argv [i], NULL, 10) : 0;
}
}
return 0;
}
/**
* camel_db_count_message_info:
*
* Since: 2.26
**/
gint
camel_db_count_message_info (CamelDB *cdb,
const gchar *query,
guint32 *count,
GError **error)
{
gint ret = -1;
READER_LOCK (cdb);
START (query);
ret = cdb_sql_exec (cdb->db, query, count_cb, count, error);
END;
READER_UNLOCK (cdb);
CAMEL_DB_RELEASE_SQLITE_MEMORY;
return ret;
}
/**
* camel_db_count_junk_message_info:
*
* Since: 2.24
**/
gint
camel_db_count_junk_message_info (CamelDB *cdb,
const gchar *table_name,
guint32 *count,
GError **error)
{
gint ret;
gchar *query;
if (!cdb)
return -1;
query = sqlite3_mprintf ("SELECT COUNT (*) FROM %Q WHERE junk = 1", table_name);
ret = camel_db_count_message_info (cdb, query, count, error);
sqlite3_free (query);
return ret;
}
/**
* camel_db_count_unread_message_info:
*
* Since: 2.24
**/
gint
camel_db_count_unread_message_info (CamelDB *cdb,
const gchar *table_name,
guint32 *count,
GError **error)
{
gint ret;
gchar *query;
if (!cdb)
return -1;
query = sqlite3_mprintf ("SELECT COUNT (*) FROM %Q WHERE read = 0", table_name);
ret = camel_db_count_message_info (cdb, query, count, error);
sqlite3_free (query);
return ret;
}
/**
* camel_db_count_visible_unread_message_info:
*
* Since: 2.24
**/
gint
camel_db_count_visible_unread_message_info (CamelDB *cdb,
const gchar *table_name,
guint32 *count,
GError **error)
{
gint ret;
gchar *query;
if (!cdb)
return -1;
query = sqlite3_mprintf ("SELECT COUNT (*) FROM %Q WHERE read = 0 AND junk = 0 AND deleted = 0", table_name);
ret = camel_db_count_message_info (cdb, query, count, error);
sqlite3_free (query);
return ret;
}
/**
* camel_db_count_visible_message_info:
*
* Since: 2.24
**/
gint
camel_db_count_visible_message_info (CamelDB *cdb,
const gchar *table_name,
guint32 *count,
GError **error)
{
gint ret;
gchar *query;
if (!cdb)
return -1;
query = sqlite3_mprintf ("SELECT COUNT (*) FROM %Q WHERE junk = 0 AND deleted = 0", table_name);
ret = camel_db_count_message_info (cdb, query, count, error);
sqlite3_free (query);
return ret;
}
/**
* camel_db_count_junk_not-deleted_message_info:
*
* Since: 2.24
**/
gint
camel_db_count_junk_not_deleted_message_info (CamelDB *cdb,
const gchar *table_name,
guint32 *count,
GError **error)
{
gint ret;
gchar *query;
if (!cdb)
return -1;
query = sqlite3_mprintf ("SELECT COUNT (*) FROM %Q WHERE junk = 1 AND deleted = 0", table_name);
ret = camel_db_count_message_info (cdb, query, count, error);
sqlite3_free (query);
return ret;
}
/**
* camel_db_count_deleted_message_info:
*
* Since: 2.24
**/
gint
camel_db_count_deleted_message_info (CamelDB *cdb,
const gchar *table_name,
guint32 *count,
GError **error)
{
gint ret;
gchar *query;
if (!cdb)
return -1;
query = sqlite3_mprintf ("SELECT COUNT (*) FROM %Q WHERE deleted = 1", table_name);
ret = camel_db_count_message_info (cdb, query, count, error);
sqlite3_free (query);
return ret;
}
/**
* camel_db_count_total_message_info:
*
* Since: 2.24
**/
gint
camel_db_count_total_message_info (CamelDB *cdb,
const gchar *table_name,
guint32 *count,
GError **error)
{
gint ret;
gchar *query;
if (!cdb)
return -1;
query = sqlite3_mprintf ("SELECT COUNT (*) FROM %Q where read=0 or read=1", table_name);
ret = camel_db_count_message_info (cdb, query, count, error);
sqlite3_free (query);
return ret;
}
/**
* camel_db_select:
*
* Since: 2.24
**/
gint
camel_db_select (CamelDB *cdb,
const gchar *stmt,
CamelDBSelectCB callback,
gpointer data,
GError **error)
{
gint ret = -1;
if (!cdb)
return ret;
d (g_print ("\n%s:\n%s \n", G_STRFUNC, stmt));
READER_LOCK (cdb);
START (stmt);
ret = cdb_sql_exec (cdb->db, stmt, callback, data, error);
END;
READER_UNLOCK (cdb);
CAMEL_DB_RELEASE_SQLITE_MEMORY;
return ret;
}
static gint
read_uids_callback (gpointer ref_array,
gint ncol,
gchar **cols,
gchar **name)
{
GPtrArray *array = ref_array;
g_return_val_if_fail (ncol == 1, 0);
if (cols[0])
g_ptr_array_add (array, (gchar *) (camel_pstring_strdup (cols[0])));
return 0;
}
static gint
read_uids_to_hash_callback (gpointer ref_hash,
gint ncol,
gchar **cols,
gchar **name)
{
GHashTable *hash = ref_hash;
g_return_val_if_fail (ncol == 2, 0);
if (cols[0])
g_hash_table_insert (hash, (gchar *) camel_pstring_strdup (cols[0]), GUINT_TO_POINTER (cols[1] ? strtoul (cols[1], NULL, 10) : 0));
return 0;
}
/**
* camel_db_get_folder_uids:
*
* Fills hash with uid->GUINT_TO_POINTER (flag)
*
* Since: 2.24
**/
gint
camel_db_get_folder_uids (CamelDB *db,
const gchar *folder_name,
const gchar *sort_by,
const gchar *collate,
GHashTable *hash,
GError **error)
{
gchar *sel_query;
gint ret;
sel_query = sqlite3_mprintf (
"SELECT uid,flags FROM %Q%s%s%s%s",
folder_name,
sort_by ? " order by " : "",
sort_by ? sort_by : "",
(sort_by && collate) ? " collate " : "",
(sort_by && collate) ? collate : "");
ret = camel_db_select (db, sel_query, read_uids_to_hash_callback, hash, error);
sqlite3_free (sel_query);
return ret;
}
/**
* camel_db_get_folder_junk_uids:
*
* Since: 2.24
**/
GPtrArray *
camel_db_get_folder_junk_uids (CamelDB *db,
gchar *folder_name,
GError **error)
{
gchar *sel_query;
gint ret;
GPtrArray *array = g_ptr_array_new ();
sel_query = sqlite3_mprintf ("SELECT uid FROM %Q where junk=1", folder_name);
ret = camel_db_select (db, sel_query, read_uids_callback, array, error);
sqlite3_free (sel_query);
if (!array->len || ret != 0) {
g_ptr_array_free (array, TRUE);
array = NULL;
}
return array;
}
/**
* camel_db_get_folder_deleted_uids:
*
* Since: 2.24
**/
GPtrArray *
camel_db_get_folder_deleted_uids (CamelDB *db,
const gchar *folder_name,
GError **error)
{
gchar *sel_query;
gint ret;
GPtrArray *array = g_ptr_array_new ();
sel_query = sqlite3_mprintf ("SELECT uid FROM %Q where deleted=1", folder_name);
ret = camel_db_select (db, sel_query, read_uids_callback, array, error);
sqlite3_free (sel_query);
if (!array->len || ret != 0) {
g_ptr_array_free (array, TRUE);
array = NULL;
}
return array;
}
struct ReadPreviewData
{
GHashTable *columns_hash;
GHashTable *hash;
};
static gint
read_preview_callback (gpointer ref,
gint ncol,
gchar **cols,
gchar **name)
{
struct ReadPreviewData *rpd = ref;
const gchar *uid = NULL;
gchar *msg = NULL;
gint i;
for (i = 0; i < ncol; ++i) {
if (!name[i] || !cols[i])
continue;
switch (camel_db_get_column_ident (&rpd->columns_hash, i, ncol, name)) {
case CAMEL_DB_COLUMN_UID:
uid = camel_pstring_strdup (cols[i]);
break;
case CAMEL_DB_COLUMN_PREVIEW:
msg = g_strdup (cols[i]);
break;
default:
g_warn_if_reached ();
break;
}
}
g_hash_table_insert (rpd->hash, (gchar *) uid, msg);
return 0;
}
/**
* camel_db_get_folder_preview:
*
* Since: 2.28
**/
GHashTable *
camel_db_get_folder_preview (CamelDB *db,
const gchar *folder_name,
GError **error)
{
gchar *sel_query;
gint ret;
struct ReadPreviewData rpd;
GHashTable *hash = g_hash_table_new (g_str_hash, g_str_equal);
sel_query = sqlite3_mprintf ("SELECT uid, preview FROM '%q_preview'", folder_name);
rpd.columns_hash = NULL;
rpd.hash = hash;
ret = camel_db_select (db, sel_query, read_preview_callback, &rpd, error);
sqlite3_free (sel_query);
if (rpd.columns_hash)
g_hash_table_destroy (rpd.columns_hash);
if (!g_hash_table_size (hash) || ret != 0) {
g_hash_table_destroy (hash);
hash = NULL;
}
return hash;
}
/**
* camel_db_write_preview_record:
*
* Since: 2.28
**/
gint
camel_db_write_preview_record (CamelDB *db,
const gchar *folder_name,
const gchar *uid,
const gchar *msg,
GError **error)
{
gchar *query;
gint ret;
query = sqlite3_mprintf ("INSERT OR REPLACE INTO '%q_preview' VALUES(%Q,%Q)", folder_name, uid, msg);
ret = camel_db_add_to_transaction (db, query, error);
sqlite3_free (query);
return ret;
}
/**
* camel_db_create_folders_table:
*
* Since: 2.24
**/
gint
camel_db_create_folders_table (CamelDB *cdb,
GError **error)
{
const gchar *query = "CREATE TABLE IF NOT EXISTS folders ( "
"folder_name TEXT PRIMARY KEY, "
"version REAL, "
"flags INTEGER, "
"nextuid INTEGER, "
"time NUMERIC, "
"saved_count INTEGER, "
"unread_count INTEGER, "
"deleted_count INTEGER, "
"junk_count INTEGER, "
"visible_count INTEGER, "
"jnd_count INTEGER, "
"bdata TEXT )";
CAMEL_DB_RELEASE_SQLITE_MEMORY;
return ((camel_db_command (cdb, query, error)));
}
static gint
camel_db_create_message_info_table (CamelDB *cdb,
const gchar *folder_name,
GError **error)
{
gint ret;
gchar *table_creation_query, *safe_index;
/* README: It is possible to compress all system flags into a single
* column and use just as userflags but that makes querying for other
* applications difficult and bloats the parsing code. Instead, it is
* better to bloat the tables. Sqlite should have some optimizations
* for sparse columns etc. */
table_creation_query = sqlite3_mprintf (
"CREATE TABLE IF NOT EXISTS %Q ( "
"uid TEXT PRIMARY KEY , "
"flags INTEGER , "
"msg_type INTEGER , "
"read INTEGER , "
"deleted INTEGER , "
"replied INTEGER , "
"important INTEGER , "
"junk INTEGER , "
"attachment INTEGER , "
"dirty INTEGER , "
"size INTEGER , "
"dsent NUMERIC , "
"dreceived NUMERIC , "
"subject TEXT , "
"mail_from TEXT , "
"mail_to TEXT , "
"mail_cc TEXT , "
"mlist TEXT , "
"followup_flag TEXT , "
"followup_completed_on TEXT , "
"followup_due_by TEXT , "
"part TEXT , "
"labels TEXT , "
"usertags TEXT , "
"cinfo TEXT , "
"bdata TEXT, "
"created TEXT, "
"modified TEXT)",
folder_name);
ret = camel_db_add_to_transaction (cdb, table_creation_query, error);
sqlite3_free (table_creation_query);
table_creation_query = sqlite3_mprintf (
"CREATE TABLE IF NOT EXISTS '%q_bodystructure' ( "
"uid TEXT PRIMARY KEY , "
"bodystructure TEXT )",
folder_name);
ret = camel_db_add_to_transaction (cdb, table_creation_query, error);
sqlite3_free (table_creation_query);
/* Create message preview table. */
table_creation_query = sqlite3_mprintf ("CREATE TABLE IF NOT EXISTS '%q_preview' ( uid TEXT PRIMARY KEY , preview TEXT)", folder_name);
ret = camel_db_add_to_transaction (cdb, table_creation_query, error);
sqlite3_free (table_creation_query);
/* FIXME: sqlize folder_name before you create the index */
safe_index = g_strdup_printf ("SINDEX-%s", folder_name);
table_creation_query = sqlite3_mprintf ("DROP INDEX IF EXISTS %Q", safe_index);
ret = camel_db_add_to_transaction (cdb, table_creation_query, error);
g_free (safe_index);
sqlite3_free (table_creation_query);
/* INDEX on preview */
safe_index = g_strdup_printf ("SINDEX-%s-preview", folder_name);
table_creation_query = sqlite3_mprintf ("CREATE INDEX IF NOT EXISTS %Q ON '%q_preview' (uid, preview)", safe_index, folder_name);
ret = camel_db_add_to_transaction (cdb, table_creation_query, error);
g_free (safe_index);
sqlite3_free (table_creation_query);
/* Index on deleted*/
safe_index = g_strdup_printf ("DELINDEX-%s", folder_name);
table_creation_query = sqlite3_mprintf ("CREATE INDEX IF NOT EXISTS %Q ON %Q (deleted)", safe_index, folder_name);
ret = camel_db_add_to_transaction (cdb, table_creation_query, error);
g_free (safe_index);
sqlite3_free (table_creation_query);
/* Index on Junk*/
safe_index = g_strdup_printf ("JUNKINDEX-%s", folder_name);
table_creation_query = sqlite3_mprintf ("CREATE INDEX IF NOT EXISTS %Q ON %Q (junk)", safe_index, folder_name);
ret = camel_db_add_to_transaction (cdb, table_creation_query, error);
g_free (safe_index);
sqlite3_free (table_creation_query);
/* Index on unread*/
safe_index = g_strdup_printf ("READINDEX-%s", folder_name);
table_creation_query = sqlite3_mprintf ("CREATE INDEX IF NOT EXISTS %Q ON %Q (read)", safe_index, folder_name);
ret = camel_db_add_to_transaction (cdb, table_creation_query, error);
g_free (safe_index);
sqlite3_free (table_creation_query);
return ret;
}
static gint
camel_db_migrate_folder_prepare (CamelDB *cdb,
const gchar *folder_name,
gint version,
GError **error)
{
gint ret = 0;
gchar *table_creation_query;
/* Migration stage one: storing the old data */
if (version < 1) {
/* Between version 0-1 the following things are changed
* ADDED: created: time
* ADDED: modified: time
* RENAMED: msg_security to dirty
* */
table_creation_query = sqlite3_mprintf ("DROP TABLE IF EXISTS 'mem.%q'", folder_name);
ret = camel_db_add_to_transaction (cdb, table_creation_query, error);
sqlite3_free (table_creation_query);
table_creation_query = sqlite3_mprintf (
"CREATE TEMP TABLE IF NOT EXISTS 'mem.%q' ( "
"uid TEXT PRIMARY KEY , "
"flags INTEGER , "
"msg_type INTEGER , "
"read INTEGER , "
"deleted INTEGER , "
"replied INTEGER , "
"important INTEGER , "
"junk INTEGER , "
"attachment INTEGER , "
"dirty INTEGER , "
"size INTEGER , "
"dsent NUMERIC , "
"dreceived NUMERIC , "
"subject TEXT , "
"mail_from TEXT , "
"mail_to TEXT , "
"mail_cc TEXT , "
"mlist TEXT , "
"followup_flag TEXT , "
"followup_completed_on TEXT , "
"followup_due_by TEXT , "
"part TEXT , "
"labels TEXT , "
"usertags TEXT , "
"cinfo TEXT , "
"bdata TEXT, "
"created TEXT, "
"modified TEXT )",
folder_name);
ret = camel_db_add_to_transaction (cdb, table_creation_query, error);
sqlite3_free (table_creation_query);
table_creation_query = sqlite3_mprintf (
"INSERT INTO 'mem.%q' SELECT "
"uid , flags , msg_type , read , deleted , "
"replied , important , junk , attachment , dirty , "
"size , dsent , dreceived , subject , mail_from , "
"mail_to , mail_cc , mlist , followup_flag , "
"followup_completed_on , followup_due_by , "
"part , labels , usertags , cinfo , bdata , "
"strftime(\"%%s\", 'now'), "
"strftime(\"%%s\", 'now') FROM %Q",
folder_name, folder_name);
ret = camel_db_add_to_transaction (cdb, table_creation_query, error);
sqlite3_free (table_creation_query);
table_creation_query = sqlite3_mprintf ("DROP TABLE IF EXISTS %Q", folder_name);
ret = camel_db_add_to_transaction (cdb, table_creation_query, error);
sqlite3_free (table_creation_query);
ret = camel_db_create_message_info_table (cdb, folder_name, error);
g_clear_error (error);
}
/* Add later version migrations here */
return ret;
}
static gint
camel_db_migrate_folder_recreate (CamelDB *cdb,
const gchar *folder_name,
gint version,
GError **error)
{
gint ret = 0;
gchar *table_creation_query;
/* Migration stage two: writing back the old data */
if (version < 2) {
GError *local_error = NULL;
table_creation_query = sqlite3_mprintf (
"INSERT INTO %Q SELECT uid , flags , msg_type , "
"read , deleted , replied , important , junk , "
"attachment , dirty , size , dsent , dreceived , "
"subject , mail_from , mail_to , mail_cc , mlist , "
"followup_flag , followup_completed_on , "
"followup_due_by , part , labels , usertags , "
"cinfo , bdata, created, modified FROM 'mem.%q'",
folder_name, folder_name);
ret = camel_db_add_to_transaction (cdb, table_creation_query, &local_error);
sqlite3_free (table_creation_query);
if (!local_error) {
table_creation_query = sqlite3_mprintf ("DROP TABLE 'mem.%q'", folder_name);
ret = camel_db_add_to_transaction (cdb, table_creation_query, &local_error);
sqlite3_free (table_creation_query);
}
if (local_error) {
if (local_error->message && strstr (local_error->message, "no such table") != NULL) {
/* ignore 'no such table' errors here */
g_clear_error (&local_error);
ret = 0;
} else {
g_propagate_error (error, local_error);
}
}
}
/* Add later version migrations here */
return ret;
}
/**
* camel_db_reset_folder_version:
*
* Since: 2.28
**/
gint
camel_db_reset_folder_version (CamelDB *cdb,
const gchar *folder_name,
gint reset_version,
GError **error)
{
gint ret = 0;
gchar *version_creation_query;
gchar *version_insert_query;
gchar *drop_folder_query;
drop_folder_query = sqlite3_mprintf ("DROP TABLE IF EXISTS '%q_version'", folder_name);
version_creation_query = sqlite3_mprintf ("CREATE TABLE IF NOT EXISTS '%q_version' ( version TEXT )", folder_name);
version_insert_query = sqlite3_mprintf ("INSERT INTO '%q_version' VALUES ('%d')", folder_name, reset_version);
ret = camel_db_add_to_transaction (cdb, drop_folder_query, error);
ret = camel_db_add_to_transaction (cdb, version_creation_query, error);
ret = camel_db_add_to_transaction (cdb, version_insert_query, error);
sqlite3_free (drop_folder_query);
sqlite3_free (version_creation_query);
sqlite3_free (version_insert_query);
return ret;
}
static gint
camel_db_write_folder_version (CamelDB *cdb,
const gchar *folder_name,
gint old_version,
GError **error)
{
gint ret = 0;
gchar *version_creation_query;
gchar *version_insert_query;
version_creation_query = sqlite3_mprintf ("CREATE TABLE IF NOT EXISTS '%q_version' ( version TEXT )", folder_name);
if (old_version == -1)
version_insert_query = sqlite3_mprintf ("INSERT INTO '%q_version' VALUES ('2')", folder_name);
else
version_insert_query = sqlite3_mprintf ("UPDATE '%q_version' SET version='2'", folder_name);
ret = camel_db_add_to_transaction (cdb, version_creation_query, error);
ret = camel_db_add_to_transaction (cdb, version_insert_query, error);
sqlite3_free (version_creation_query);
sqlite3_free (version_insert_query);
return ret;
}
static gint
read_version_callback (gpointer ref,
gint ncol,
gchar **cols,
gchar **name)
{
gint *version = (gint *) ref;
if (cols[0])
*version = strtoul (cols [0], NULL, 10);
return 0;
}
static gint
camel_db_get_folder_version (CamelDB *cdb,
const gchar *folder_name,
GError **error)
{
gint version = -1;
gchar *query;
query = sqlite3_mprintf ("SELECT version FROM '%q_version'", folder_name);
camel_db_select (cdb, query, read_version_callback, &version, error);
sqlite3_free (query);
return version;
}
/**
* camel_db_prepare_message_info_table:
*
* Since: 2.24
**/
gint
camel_db_prepare_message_info_table (CamelDB *cdb,
const gchar *folder_name,
GError **error)
{
gint ret, current_version;
GError *err = NULL;
/* Make sure we have the table already */
camel_db_begin_transaction (cdb, &err);
ret = camel_db_create_message_info_table (cdb, folder_name, &err);
if (err)
goto exit;
camel_db_end_transaction (cdb, &err);
/* Migration stage zero: version fetch */
current_version = camel_db_get_folder_version (cdb, folder_name, &err);
camel_db_begin_transaction (cdb, &err);
/* Migration stage one: storing the old data if necessary */
ret = camel_db_migrate_folder_prepare (cdb, folder_name, current_version, &err);
if (err)
goto exit;
/* Migration stage two: rewriting the old data if necessary */
ret = camel_db_migrate_folder_recreate (cdb, folder_name, current_version, &err);
if (err)
goto exit;
/* Final step: (over)write the current version label */
ret = camel_db_write_folder_version (cdb, folder_name, current_version, &err);
if (err)
goto exit;
camel_db_end_transaction (cdb, &err);
exit:
if (err && cdb->priv->transaction_is_on)
camel_db_abort_transaction (cdb, NULL);
if (err)
g_propagate_error (error, err);
return ret;
}
static gint
write_mir (CamelDB *cdb,
const gchar *folder_name,
CamelMIRecord *record,
GError **error,
gboolean delete_old_record)
{
gint ret;
/*char *del_query;*/
gchar *ins_query;
if (!record) {
g_warn_if_reached ();
return -1;
}
/* FIXME: We should migrate from this DELETE followed by INSERT model to an INSERT OR REPLACE model as pointed out by pvanhoof */
/* NB: UGLIEST Hack. We can't modify the schema now. We are using dirty (an unsed one to notify of FLAGGED/Dirty infos */
ins_query = sqlite3_mprintf (
"INSERT OR REPLACE INTO %Q VALUES ("
"%Q, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, "
"%lld, %lld, %Q, %Q, %Q, %Q, %Q, %Q, %Q, %Q, "
"%Q, %Q, %Q, %Q, %Q, "
"strftime(\"%%s\", 'now'), "
"strftime(\"%%s\", 'now') )",
folder_name,
record->uid,
record->flags,
record->msg_type,
record->read,
record->deleted,
record->replied,
record->important,
record->junk,
record->attachment,
record->dirty,
record->size,
(gint64) record->dsent,
(gint64) record->dreceived,
record->subject,
record->from,
record->to,
record->cc,
record->mlist,
record->followup_flag,
record->followup_completed_on,
record->followup_due_by,
record->part,
record->labels,
record->usertags,
record->cinfo,
record->bdata);
ret = camel_db_add_to_transaction (cdb, ins_query, error);
sqlite3_free (ins_query);
if (ret == 0) {
ins_query = sqlite3_mprintf (
"INSERT OR REPLACE INTO "
"'%q_bodystructure' VALUES (%Q, %Q )",
folder_name, record->uid, record->bodystructure);
ret = camel_db_add_to_transaction (cdb, ins_query, error);
sqlite3_free (ins_query);
}
return ret;
}
/**
* camel_db_write_fresh_message_info_record:
*
* Since: 2.26
**/
gint
camel_db_write_fresh_message_info_record (CamelDB *cdb,
const gchar *folder_name,
CamelMIRecord *record,
GError **error)
{
return write_mir (cdb, folder_name, record, error, FALSE);
}
/**
* camel_db_write_message_info_record:
*
* Since: 2.24
**/
gint
camel_db_write_message_info_record (CamelDB *cdb,
const gchar *folder_name,
CamelMIRecord *record,
GError **error)
{
return write_mir (cdb, folder_name, record, error, TRUE);
}
/**
* camel_db_write_folder_info_record:
*
* Since: 2.24
**/
gint
camel_db_write_folder_info_record (CamelDB *cdb,
CamelFIRecord *record,
GError **error)
{
gint ret;
gchar *del_query;
gchar *ins_query;
ins_query = sqlite3_mprintf (
"INSERT INTO folders VALUES ("
"%Q, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %Q ) ",
record->folder_name,
record->version,
record->flags,
record->nextuid,
record->time,
record->saved_count,
record->unread_count,
record->deleted_count,
record->junk_count,
record->visible_count,
record->jnd_count,
record->bdata);
del_query = sqlite3_mprintf (
"DELETE FROM folders WHERE folder_name = %Q",
record->folder_name);
ret = camel_db_add_to_transaction (cdb, del_query, error);
ret = camel_db_add_to_transaction (cdb, ins_query, error);
sqlite3_free (del_query);
sqlite3_free (ins_query);
return ret;
}
struct ReadFirData {
GHashTable *columns_hash;
CamelFIRecord *record;
};
static gint
read_fir_callback (gpointer ref,
gint ncol,
gchar **cols,
gchar **name)
{
struct ReadFirData *rfd = ref;
gint i;
d (g_print ("\nread_fir_callback called \n"));
for (i = 0; i < ncol; ++i) {
if (!name[i] || !cols[i])
continue;
switch (camel_db_get_column_ident (&rfd->columns_hash, i, ncol, name)) {
case CAMEL_DB_COLUMN_FOLDER_NAME:
rfd->record->folder_name = g_strdup (cols[i]);
break;
case CAMEL_DB_COLUMN_VERSION:
rfd->record->version = cols[i] ? strtoul (cols[i], NULL, 10) : 0;
break;
case CAMEL_DB_COLUMN_FLAGS:
rfd->record->flags = cols[i] ? strtoul (cols[i], NULL, 10) : 0;
break;
case CAMEL_DB_COLUMN_NEXTUID:
rfd->record->nextuid = cols[i] ? strtoul (cols[i], NULL, 10) : 0;
break;
case CAMEL_DB_COLUMN_TIME:
rfd->record->time = cols[i] ? strtoul (cols[i], NULL, 10) : 0;
break;
case CAMEL_DB_COLUMN_SAVED_COUNT:
rfd->record->saved_count = cols[i] ? strtoul (cols[i], NULL, 10) : 0;
break;
case CAMEL_DB_COLUMN_UNREAD_COUNT:
rfd->record->unread_count = cols[i] ? strtoul (cols[i], NULL, 10) : 0;
break;
case CAMEL_DB_COLUMN_DELETED_COUNT:
rfd->record->deleted_count = cols[i] ? strtoul (cols[i], NULL, 10) : 0;
break;
case CAMEL_DB_COLUMN_JUNK_COUNT:
rfd->record->junk_count = cols[i] ? strtoul (cols[i], NULL, 10) : 0;
break;
case CAMEL_DB_COLUMN_VISIBLE_COUNT:
rfd->record->visible_count = cols[i] ? strtoul (cols[i], NULL, 10) : 0;
break;
case CAMEL_DB_COLUMN_JND_COUNT:
rfd->record->jnd_count = cols[i] ? strtoul (cols[i], NULL, 10) : 0;
break;
case CAMEL_DB_COLUMN_BDATA:
rfd->record->bdata = g_strdup (cols[i]);
break;
default:
g_warn_if_reached ();
break;
}
}
return 0;
}
/**
* camel_db_read_folder_info_record:
*
* Since: 2.24
**/
gint
camel_db_read_folder_info_record (CamelDB *cdb,
const gchar *folder_name,
CamelFIRecord *record,
GError **error)
{
struct ReadFirData rfd;
gchar *query;
gint ret;
rfd.columns_hash = NULL;
rfd.record = record;
query = sqlite3_mprintf ("SELECT * FROM folders WHERE folder_name = %Q", folder_name);
ret = camel_db_select (cdb, query, read_fir_callback, &rfd, error);
sqlite3_free (query);
if (rfd.columns_hash)
g_hash_table_destroy (rfd.columns_hash);
return ret;
}
/**
* camel_db_read_message_info_record_with_uid:
*
* Since: 2.24
**/
gint
camel_db_read_message_info_record_with_uid (CamelDB *cdb,
const gchar *folder_name,
const gchar *uid,
gpointer p,
CamelDBSelectCB read_mir_callback,
GError **error)
{
gchar *query;
gint ret;
query = sqlite3_mprintf (
"SELECT uid, flags, size, dsent, dreceived, subject, "
"mail_from, mail_to, mail_cc, mlist, part, labels, "
"usertags, cinfo, bdata FROM %Q WHERE uid = %Q",
folder_name, uid);
ret = camel_db_select (cdb, query, read_mir_callback, p, error);
sqlite3_free (query);
return (ret);
}
/**
* camel_db_read_message_info_records:
*
* Since: 2.24
**/
gint
camel_db_read_message_info_records (CamelDB *cdb,
const gchar *folder_name,
gpointer p,
CamelDBSelectCB read_mir_callback,
GError **error)
{
gchar *query;
gint ret;
query = sqlite3_mprintf (
"SELECT uid, flags, size, dsent, dreceived, subject, "
"mail_from, mail_to, mail_cc, mlist, part, labels, "
"usertags, cinfo, bdata FROM %Q ", folder_name);
ret = camel_db_select (cdb, query, read_mir_callback, p, error);
sqlite3_free (query);
return (ret);
}
/**
* camel_db_create_deleted_table:
*
* Since: 2.24
**/
static gint
camel_db_create_deleted_table (CamelDB *cdb,
GError **error)
{
gint ret;
gchar *table_creation_query;
table_creation_query = sqlite3_mprintf (
"CREATE TABLE IF NOT EXISTS Deletes ("
"id INTEGER primary key AUTOINCREMENT not null, "
"uid TEXT, "
"time TEXT, "
"mailbox TEXT)");
ret = camel_db_add_to_transaction (cdb, table_creation_query, error);
sqlite3_free (table_creation_query);
return ret;
}
static gint
camel_db_trim_deleted_table (CamelDB *cdb,
GError **error)
{
gint ret = 0;
/* TODO: We need a mechanism to get rid of very old deletes, or something
* that keeps the list trimmed at a certain max (deleting upfront when
* appending at the back) */
return ret;
}
/**
* camel_db_delete_uid:
*
* Since: 2.24
**/
gint
camel_db_delete_uid (CamelDB *cdb,
const gchar *folder,
const gchar *uid,
GError **error)
{
gchar *tab;
gint ret;
camel_db_begin_transaction (cdb, error);
ret = camel_db_create_deleted_table (cdb, error);
tab = sqlite3_mprintf (
"INSERT OR REPLACE INTO Deletes (uid, mailbox, time) "
"SELECT uid, %Q, strftime(\"%%s\", 'now') FROM %Q "
"WHERE uid = %Q", folder, folder, uid);
ret = camel_db_add_to_transaction (cdb, tab, error);
sqlite3_free (tab);
ret = camel_db_trim_deleted_table (cdb, error);
tab = sqlite3_mprintf ("DELETE FROM '%q_bodystructure' WHERE uid = %Q", folder, uid);
ret = camel_db_add_to_transaction (cdb, tab, error);
sqlite3_free (tab);
tab = sqlite3_mprintf ("DELETE FROM %Q WHERE uid = %Q", folder, uid);
ret = camel_db_add_to_transaction (cdb, tab, error);
sqlite3_free (tab);
ret = camel_db_end_transaction (cdb, error);
CAMEL_DB_RELEASE_SQLITE_MEMORY;
return ret;
}
static gint
cdb_delete_ids (CamelDB *cdb,
const gchar *folder_name,
GList *uids,
const gchar *uid_prefix,
const gchar *field,
GError **error)
{
gchar *tmp;
gint ret;
gchar *tab;
gboolean first = TRUE;
GString *str = g_string_new ("DELETE FROM ");
GList *iterator;
GString *ins_str = NULL;
if (strcmp (field, "vuid") != 0)
ins_str = g_string_new ("INSERT OR REPLACE INTO Deletes (uid, mailbox, time) SELECT uid, ");
camel_db_begin_transaction (cdb, error);
if (ins_str)
ret = camel_db_create_deleted_table (cdb, error);
if (ins_str) {
tab = sqlite3_mprintf ("%Q, strftime(\"%%s\", 'now') FROM %Q WHERE %s IN (", folder_name, folder_name, field);
g_string_append_printf (ins_str, "%s ", tab);
sqlite3_free (tab);
}
tmp = sqlite3_mprintf ("%Q WHERE %s IN (", folder_name, field);
g_string_append_printf (str, "%s ", tmp);
sqlite3_free (tmp);
iterator = uids;
while (iterator) {
gchar *foo = g_strdup_printf ("%s%s", uid_prefix, (gchar *) iterator->data);
tmp = sqlite3_mprintf ("%Q", foo);
g_free (foo);
iterator = iterator->next;
if (first == TRUE) {
g_string_append_printf (str, " %s ", tmp);
if (ins_str)
g_string_append_printf (ins_str, " %s ", tmp);
first = FALSE;
} else {
g_string_append_printf (str, ", %s ", tmp);
if (ins_str)
g_string_append_printf (ins_str, ", %s ", tmp);
}
sqlite3_free (tmp);
}
g_string_append (str, ")");
if (ins_str) {
g_string_append (ins_str, ")");
ret = camel_db_add_to_transaction (cdb, ins_str->str, error);
ret = camel_db_trim_deleted_table (cdb, error);
}
ret = camel_db_add_to_transaction (cdb, str->str, error);
ret = camel_db_end_transaction (cdb, error);
CAMEL_DB_RELEASE_SQLITE_MEMORY;
if (ins_str)
g_string_free (ins_str, TRUE);
g_string_free (str, TRUE);
return ret;
}
/**
* camel_db_delete_uids:
*
* Since: 2.24
**/
gint
camel_db_delete_uids (CamelDB *cdb,
const gchar *folder_name,
GList *uids,
GError **error)
{
if (!uids || !uids->data)
return 0;
return cdb_delete_ids (cdb, folder_name, uids, "", "uid", error);
}
/**
* camel_db_clear_folder_summary:
*
* Since: 2.24
**/
gint
camel_db_clear_folder_summary (CamelDB *cdb,
const gchar *folder,
GError **error)
{
gint ret;
gchar *folders_del;
gchar *msginfo_del;
gchar *bstruct_del;
gchar *tab;
folders_del = sqlite3_mprintf ("DELETE FROM folders WHERE folder_name = %Q", folder);
msginfo_del = sqlite3_mprintf ("DELETE FROM %Q ", folder);
bstruct_del = sqlite3_mprintf ("DELETE FROM '%q_bodystructure' ", folder);
camel_db_begin_transaction (cdb, error);
ret = camel_db_create_deleted_table (cdb, error);
tab = sqlite3_mprintf (
"INSERT OR REPLACE INTO Deletes (uid, mailbox, time) "
"SELECT uid, %Q, strftime(\"%%s\", 'now') FROM %Q",
folder, folder);
ret = camel_db_add_to_transaction (cdb, tab, error);
sqlite3_free (tab);
ret = camel_db_trim_deleted_table (cdb, error);
camel_db_add_to_transaction (cdb, msginfo_del, error);
camel_db_add_to_transaction (cdb, folders_del, error);
camel_db_add_to_transaction (cdb, bstruct_del, error);
ret = camel_db_end_transaction (cdb, error);
sqlite3_free (folders_del);
sqlite3_free (msginfo_del);
sqlite3_free (bstruct_del);
return ret;
}
/**
* camel_db_delete_folder:
*
* Since: 2.24
**/
gint
camel_db_delete_folder (CamelDB *cdb,
const gchar *folder,
GError **error)
{
gint ret;
gchar *del;
gchar *tab;
camel_db_begin_transaction (cdb, error);
ret = camel_db_create_deleted_table (cdb, error);
tab = sqlite3_mprintf (
"INSERT OR REPLACE INTO Deletes (uid, mailbox, time) "
"SELECT uid, %Q, strftime(\"%%s\", 'now') FROM %Q",
folder, folder);
ret = camel_db_add_to_transaction (cdb, tab, error);
sqlite3_free (tab);
ret = camel_db_trim_deleted_table (cdb, error);
del = sqlite3_mprintf ("DELETE FROM folders WHERE folder_name = %Q", folder);
ret = camel_db_add_to_transaction (cdb, del, error);
sqlite3_free (del);
del = sqlite3_mprintf ("DROP TABLE %Q ", folder);
ret = camel_db_add_to_transaction (cdb, del, error);
sqlite3_free (del);
del = sqlite3_mprintf ("DROP TABLE '%q_bodystructure' ", folder);
ret = camel_db_add_to_transaction (cdb, del, error);
sqlite3_free (del);
ret = camel_db_end_transaction (cdb, error);
CAMEL_DB_RELEASE_SQLITE_MEMORY;
return ret;
}
/**
* camel_db_rename_folder:
*
* Since: 2.24
**/
gint
camel_db_rename_folder (CamelDB *cdb,
const gchar *old_folder,
const gchar *new_folder,
GError **error)
{
gint ret;
gchar *cmd, *tab;
camel_db_begin_transaction (cdb, error);
ret = camel_db_create_deleted_table (cdb, error);
tab = sqlite3_mprintf (
"INSERT OR REPLACE INTO Deletes (uid, mailbox, time) "
"SELECT uid, %Q, strftime(\"%%s\", 'now') FROM %Q",
old_folder, old_folder);
ret = camel_db_add_to_transaction (cdb, tab, error);
sqlite3_free (tab);
ret = camel_db_trim_deleted_table (cdb, error);
cmd = sqlite3_mprintf ("ALTER TABLE %Q RENAME TO %Q", old_folder, new_folder);
ret = camel_db_add_to_transaction (cdb, cmd, error);
sqlite3_free (cmd);
cmd = sqlite3_mprintf ("ALTER TABLE '%q_version' RENAME TO '%q_version'", old_folder, new_folder);
ret = camel_db_add_to_transaction (cdb, cmd, error);
sqlite3_free (cmd);
cmd = sqlite3_mprintf ("UPDATE %Q SET modified=strftime(\"%%s\", 'now'), created=strftime(\"%%s\", 'now')", new_folder);
ret = camel_db_add_to_transaction (cdb, cmd, error);
sqlite3_free (cmd);
cmd = sqlite3_mprintf ("UPDATE folders SET folder_name = %Q WHERE folder_name = %Q", new_folder, old_folder);
ret = camel_db_add_to_transaction (cdb, cmd, error);
sqlite3_free (cmd);
ret = camel_db_end_transaction (cdb, error);
CAMEL_DB_RELEASE_SQLITE_MEMORY;
return ret;
}
/**
* camel_db_camel_mir_free:
*
* Since: 2.24
**/
void
camel_db_camel_mir_free (CamelMIRecord *record)
{
if (record) {
camel_pstring_free (record->uid);
camel_pstring_free (record->subject);
camel_pstring_free (record->from);
camel_pstring_free (record->to);
camel_pstring_free (record->cc);
camel_pstring_free (record->mlist);
camel_pstring_free (record->followup_flag);
camel_pstring_free (record->followup_completed_on);
camel_pstring_free (record->followup_due_by);
g_free (record->part);
g_free (record->labels);
g_free (record->usertags);
g_free (record->cinfo);
g_free (record->bdata);
g_free (record->bodystructure);
g_free (record);
}
}
/**
* camel_db_sqlize_string:
*
* Since: 2.24
**/
gchar *
camel_db_sqlize_string (const gchar *string)
{
return sqlite3_mprintf ("%Q", string);
}
/**
* camel_db_free_sqlized_string:
*
* Since: 2.24
**/
void
camel_db_free_sqlized_string (gchar *string)
{
sqlite3_free (string);
string = NULL;
}
/*
"( uid TEXT PRIMARY KEY ,
flags INTEGER ,
msg_type INTEGER ,
replied INTEGER ,
dirty INTEGER ,
size INTEGER ,
dsent NUMERIC ,
dreceived NUMERIC ,
mlist TEXT ,
followup_flag TEXT ,
followup_completed_on TEXT ,
followup_due_by TEXT ," */
/**
* camel_db_get_column_name:
*
* Since: 2.24
**/
gchar *
camel_db_get_column_name (const gchar *raw_name)
{
if (!g_ascii_strcasecmp (raw_name, "Subject"))
return g_strdup ("subject");
else if (!g_ascii_strcasecmp (raw_name, "from"))
return g_strdup ("mail_from");
else if (!g_ascii_strcasecmp (raw_name, "Cc"))
return g_strdup ("mail_cc");
else if (!g_ascii_strcasecmp (raw_name, "To"))
return g_strdup ("mail_to");
else if (!g_ascii_strcasecmp (raw_name, "Flagged"))
return g_strdup ("important");
else if (!g_ascii_strcasecmp (raw_name, "deleted"))
return g_strdup ("deleted");
else if (!g_ascii_strcasecmp (raw_name, "junk"))
return g_strdup ("junk");
else if (!g_ascii_strcasecmp (raw_name, "Answered"))
return g_strdup ("replied");
else if (!g_ascii_strcasecmp (raw_name, "Seen"))
return g_strdup ("read");
else if (!g_ascii_strcasecmp (raw_name, "user-tag"))
return g_strdup ("usertags");
else if (!g_ascii_strcasecmp (raw_name, "user-flag"))
return g_strdup ("labels");
else if (!g_ascii_strcasecmp (raw_name, "Attachments"))
return g_strdup ("attachment");
else if (!g_ascii_strcasecmp (raw_name, "x-camel-mlist"))
return g_strdup ("mlist");
/* indicate the header name is not part of the summary */
return NULL;
}
/**
* camel_db_start_in_memory_transactions:
*
* Since: 2.26
**/
gint
camel_db_start_in_memory_transactions (CamelDB *cdb,
GError **error)
{
gint ret;
gchar *cmd = sqlite3_mprintf ("ATTACH DATABASE ':memory:' AS %s", CAMEL_DB_IN_MEMORY_DB);
ret = camel_db_command (cdb, cmd, error);
sqlite3_free (cmd);
cmd = sqlite3_mprintf (
"CREATE TEMPORARY TABLE %Q ( "
"uid TEXT PRIMARY KEY , "
"flags INTEGER , "
"msg_type INTEGER , "
"read INTEGER , "
"deleted INTEGER , "
"replied INTEGER , "
"important INTEGER , "
"junk INTEGER , "
"attachment INTEGER , "
"dirty INTEGER , "
"size INTEGER , "
"dsent NUMERIC , "
"dreceived NUMERIC , "
"subject TEXT , "
"mail_from TEXT , "
"mail_to TEXT , "
"mail_cc TEXT , "
"mlist TEXT , "
"followup_flag TEXT , "
"followup_completed_on TEXT , "
"followup_due_by TEXT , "
"part TEXT , "
"labels TEXT , "
"usertags TEXT , "
"cinfo TEXT , "
"bdata TEXT )",
CAMEL_DB_IN_MEMORY_TABLE);
ret = camel_db_command (cdb, cmd, error);
if (ret != 0 )
abort ();
sqlite3_free (cmd);
return ret;
}
/**
* camel_db_flush_in_memory_transactions:
*
* Since: 2.26
**/
gint
camel_db_flush_in_memory_transactions (CamelDB *cdb,
const gchar *folder_name,
GError **error)
{
gint ret;
gchar *cmd = sqlite3_mprintf ("INSERT INTO %Q SELECT * FROM %Q", folder_name, CAMEL_DB_IN_MEMORY_TABLE);
ret = camel_db_command (cdb, cmd, error);
sqlite3_free (cmd);
cmd = sqlite3_mprintf ("DROP TABLE %Q", CAMEL_DB_IN_MEMORY_TABLE);
ret = camel_db_command (cdb, cmd, error);
sqlite3_free (cmd);
cmd = sqlite3_mprintf ("DETACH %Q", CAMEL_DB_IN_MEMORY_DB);
ret = camel_db_command (cdb, cmd, error);
sqlite3_free (cmd);
return ret;
}
static struct _known_column_names {
const gchar *name;
CamelDBKnownColumnNames ident;
} known_column_names[] = {
{ "attachment", CAMEL_DB_COLUMN_ATTACHMENT },
{ "bdata", CAMEL_DB_COLUMN_BDATA },
{ "bodystructure", CAMEL_DB_COLUMN_BODYSTRUCTURE },
{ "cinfo", CAMEL_DB_COLUMN_CINFO },
{ "deleted", CAMEL_DB_COLUMN_DELETED },
{ "deleted_count", CAMEL_DB_COLUMN_DELETED_COUNT },
{ "dreceived", CAMEL_DB_COLUMN_DRECEIVED },
{ "dsent", CAMEL_DB_COLUMN_DSENT },
{ "flags", CAMEL_DB_COLUMN_FLAGS },
{ "folder_name", CAMEL_DB_COLUMN_FOLDER_NAME },
{ "followup_completed_on", CAMEL_DB_COLUMN_FOLLOWUP_COMPLETED_ON },
{ "followup_due_by", CAMEL_DB_COLUMN_FOLLOWUP_DUE_BY },
{ "followup_flag", CAMEL_DB_COLUMN_FOLLOWUP_FLAG },
{ "important", CAMEL_DB_COLUMN_IMPORTANT },
{ "jnd_count", CAMEL_DB_COLUMN_JND_COUNT },
{ "junk", CAMEL_DB_COLUMN_JUNK },
{ "junk_count", CAMEL_DB_COLUMN_JUNK_COUNT },
{ "labels", CAMEL_DB_COLUMN_LABELS },
{ "mail_cc", CAMEL_DB_COLUMN_MAIL_CC },
{ "mail_from", CAMEL_DB_COLUMN_MAIL_FROM },
{ "mail_to", CAMEL_DB_COLUMN_MAIL_TO },
{ "mlist", CAMEL_DB_COLUMN_MLIST },
{ "nextuid", CAMEL_DB_COLUMN_NEXTUID },
{ "part", CAMEL_DB_COLUMN_PART },
{ "preview", CAMEL_DB_COLUMN_PREVIEW },
{ "read", CAMEL_DB_COLUMN_READ },
{ "replied", CAMEL_DB_COLUMN_REPLIED },
{ "saved_count", CAMEL_DB_COLUMN_SAVED_COUNT },
{ "size", CAMEL_DB_COLUMN_SIZE },
{ "subject", CAMEL_DB_COLUMN_SUBJECT },
{ "time", CAMEL_DB_COLUMN_TIME },
{ "uid", CAMEL_DB_COLUMN_UID },
{ "unread_count", CAMEL_DB_COLUMN_UNREAD_COUNT },
{ "usertags", CAMEL_DB_COLUMN_USERTAGS },
{ "version", CAMEL_DB_COLUMN_VERSION },
{ "visible_count", CAMEL_DB_COLUMN_VISIBLE_COUNT },
{ "vuid", CAMEL_DB_COLUMN_VUID }
};
/**
* camel_db_get_column_ident:
*
* Traverses column name from index @index into an enum
* #CamelDBKnownColumnNames value. The @col_names contains @ncols columns.
* First time this is called is created the @hash from col_names indexes into
* the enum, and this is reused for every other call. The function expects
* that column names are returned always in the same order. When all rows
* are read the @hash table can be freed with g_hash_table_destroy().
*
* Since: 3.4
**/
CamelDBKnownColumnNames
camel_db_get_column_ident (GHashTable **hash,
gint index,
gint ncols,
gchar **col_names)
{
gpointer value = NULL;
g_return_val_if_fail (hash != NULL, CAMEL_DB_COLUMN_UNKNOWN);
g_return_val_if_fail (col_names != NULL, CAMEL_DB_COLUMN_UNKNOWN);
g_return_val_if_fail (ncols > 0, CAMEL_DB_COLUMN_UNKNOWN);
g_return_val_if_fail (index >= 0, CAMEL_DB_COLUMN_UNKNOWN);
g_return_val_if_fail (index < ncols, CAMEL_DB_COLUMN_UNKNOWN);
if (!*hash) {
gint ii, jj, from, max = G_N_ELEMENTS (known_column_names);
*hash = g_hash_table_new (g_direct_hash, g_direct_equal);
for (ii = 0, jj = 0; ii < ncols; ii++) {
const gchar *name = col_names[ii];
gboolean first = TRUE;
if (!name)
continue;
for (from = jj; first || jj != from; jj = (jj + 1) % max, first = FALSE) {
if (g_str_equal (name, known_column_names[jj].name)) {
g_hash_table_insert (*hash, GINT_TO_POINTER (ii), GINT_TO_POINTER (known_column_names[jj].ident));
break;
}
}
if (from == jj && !first)
g_warning ("%s: missing column name '%s' in a list of known columns", G_STRFUNC, name);
}
}
g_return_val_if_fail (g_hash_table_lookup_extended (*hash, GINT_TO_POINTER (index), NULL, &value), CAMEL_DB_COLUMN_UNKNOWN);
return GPOINTER_TO_INT (value);
}
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