bool Db_File::Open (int part_index)
{
if (Is_Open ()) {
Close ();
} else if (File_Format () == DEFAULT_FORMAT) {
File_Format (DEFAULT_FORMAT);
}
bool messages = exe->Send_Messages ();
if (part_index > 0) exe->Send_Messages (false);
bool stat = Filename (part_index);
if (stat) {
int hold = part_num;
if (part_flag) {
part_num = exe->Partition_Number (part_index);
} else {
part_num = -1;
}
stat = Open ();
if (stat) {
if (part_index >= num_files) num_files = part_index + 1;
if (!part_flag) part_num = part_index;
} else {
part_num = hold;
}
}
exe->Send_Messages (messages);
return (stat);
}
bool Db_File::Close (void)
{
bool stat = true;
if (Is_Open ()) {
first_open = false;
if (File_Format () == SQLITE3) {
if (read_stmt != 0) {
sqlite3_finalize (read_stmt);
read_stmt = 0;
}
if (read_nest != 0) {
sqlite3_finalize (read_nest);
read_nest = 0;
}
if (insert_stmt != 0) {
sqlite3_finalize (insert_stmt);
insert_stmt = 0;
}
if (insert_nest != 0) {
sqlite3_finalize (insert_nest);
insert_nest = 0;
}
if (db_file != 0) {
sqlite3_exec (db_file, "COMMIT", 0, 0, 0);
sqlite3_close (db_file);
db_file = 0;
}
} else {
file.close ();
}
}
return (stat);
}
FileError File::seek( FileHandle fh, FileSeek seek, int offset )
{
DWORD moveMethod = 0;
switch( seek )
{
case FILE_SEEK_BEGIN:
moveMethod = FILE_BEGIN;
break;
case FILE_SEEK_CURRENT:
moveMethod = FILE_CURRENT;
break;
case FILE_SEEK_END:
moveMethod = FILE_END;
break;
default:
// Should never happen
// Did you add an additional seek method without updating this switch statement?
GameAssert( 0 );
}
if( !Is_Open( fh ) || !Seek_Position( fh, offset, moveMethod ) )
return FILE_SEEK_FAIL;
else
return FILE_SUCCESS;
}
FileError File::read( FileHandle fh, void* buffer, size_t inSize )
{
if( !Is_Open( fh ) || !Read_Bytes( fh, buffer, inSize ) )
return FILE_READ_FAIL;
else
return FILE_SUCCESS;
}
FileError File::write( FileHandle fh, const void* buffer, size_t inSize )
{
if( !Is_Open( fh ) || !Write_Bytes( fh, buffer, inSize ) )
return FILE_WRITE_FAIL;
else
return FILE_SUCCESS;
}
FileError File::close( FileHandle fh )
{
if( !Is_Open( fh ) || !Close_File( fh ) )
return FILE_CLOSE_FAIL;
else
return FILE_SUCCESS;
}
FileError File::flush( FileHandle fh )
{
if( !Is_Open( fh ) || !Flush_File( fh ) )
return FILE_FLUSH_FAIL;
else
return FILE_SUCCESS;
}
// why is it even an int to begin with? you can't have NEGATIVE file offsets...
FileError File::tell( FileHandle fh, unsigned long& offset )
{
DWORD position;
if( !Is_Open( fh ) || !Tell_Position( fh, position ) )
{
return FILE_TELL_FAIL;
}
else
{
offset = position;
return FILE_SUCCESS;
}
}
bool Db_File::Open (string path)
{
if (!path.empty ()) {
Filename (path);
} else if (filename.empty ()) {
return (false);
}
if (Is_Open ()) {
Close ();
} else if (File_Format () == DEFAULT_FORMAT) {
File_Format (DEFAULT_FORMAT);
}
bool create_flag, exist_flag;
if (File_Access () == CREATE) {
create_flag = true;
exist_flag = f_exist (filename);
num_records = record_num = max_record_num = 0;
} else {
create_flag = exist_flag = false;
}
if (!Db_Open (filename)) {
if (exe->Send_Messages ()) {
string message (((create_flag) ? "Creating " : "Opening "));
message += File_Type ();
exe->File_Error (message, filename);
}
return (Status (NOT_OPEN));
} else {
if (create_flag && !File_Type ().Starts_With ("New") && !File_Type ().Starts_With ("Output")) {
File_Type (String ("New %s") % File_Type ());
if (File_Format () != SQLITE3) {
File_ID (String ("New%s") % File_ID ());
}
}
//---- first open processing ----
if (first_open) {
string name;
num_files = 1;
//---- print the filename ----
if (exe->Send_Messages ()) {
if (!part_flag) {
name = filename;
} else {
name = pathname + ".*";
part_num = 0;
}
exe->Print_Filename (1, File_Type (), name);
}
//---- delete existing files ----
if (exist_flag && part_flag) {
int num;
for (int part=1; part < 1000; part++) {
num = exe->Partition_Number (part);
if (num < 0) break;
name = pathname + Extension (num);
if (!f_exist (name)) break;
remove (name.c_str ());
name += ".def";
remove (name.c_str ());
}
}
}
if (File_Format () == SQLITE3) {
if (sqlite3_exec (db_file, "PRAGMA synchronous = OFF", 0, 0, 0) != SQLITE_OK) {
return (Status (NOT_OPEN));
}
}
return (Status (OK));
}
}