baseten / Sources / PGTSAdditions.m

// PGTSAdditions.m
// BaseTen
// Copyright (C) 2006 Marko Karppinen & Co. LLC.
// Before using this software, please review the available licensing options
// by visiting or by contacting
// us at Without an additional license, this software
// may be distributed only in compliance with the GNU General Public License.
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License, version 2.0,
// as published by the Free Software Foundation.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
// $Id$

#import <stdlib.h>
#import <limits.h>
#import <BaseTen/postgresql/libpq-fe.h>
#import "PGTSAdditions.h"
#import "PGTSConnection.h"
#import "PGTSConstants.h"
#import "PGTSTypeDescription.h"
#import "PGTSConnectionPrivate.h"
#import "PGTSFoundationObjects.h"
#import "NSString+PGTSAdditions.h"
#import "BXLogger.h"

@implementation NSObject (PGTSAdditions)
- (NSString *) PGTSEscapedName: (PGTSConnection *) connection
	NSString* name = [[self description] escapeForPGTSConnection: connection];
	return [NSString stringWithFormat: @"\"%@\"", name];

- (NSString *) PGTSEscapedObjectParameter: (PGTSConnection *) connection
	NSString* retval = nil;
	int length = 0;
	char* charParameter = [self PGTSParameterLength: &length connection: connection];
	if (NULL != charParameter)
		PGconn* pgConn = [connection pgConnection];
		char* escapedParameter = (char *) calloc (1 + 2 * length, sizeof (char));
		PQescapeStringConn (pgConn, escapedParameter, charParameter, length, NULL);
		const char* clientEncoding = PQparameterStatus (pgConn, "client_encoding");
		BXAssertValueReturn (clientEncoding && 0 == strcmp ("UNICODE", clientEncoding), nil,
							 @"Expected client_encoding to be UNICODE (was: %s).", clientEncoding);
		retval = [[[NSString alloc] initWithBytesNoCopy: escapedParameter length: strlen (escapedParameter)
											   encoding: NSUTF8StringEncoding freeWhenDone: YES] autorelease];
	return retval;

@implementation NSNumber (PGTSAdditions)
- (id) PGTSConstantExpressionValue: (NSDictionary *) context
	id retval = self;
	if (0 == strcmp ("c", [self objCType]))
		retval = ([self boolValue] ? @"true" : @"false");
    return retval;
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