4 Copyright (C) 2003-2005 SKYRIX Software AG
6 Author: Helge Hess (helge.hess@skyrix.com)
8 This file is part of the SQLite Adaptor Library
10 This library is free software; you can redistribute it and/or
11 modify it under the terms of the GNU Library General Public
12 License as published by the Free Software Foundation; either
13 version 2 of the License, or (at your option) any later version.
15 This library is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 Library General Public License for more details.
20 You should have received a copy of the GNU Library General Public
21 License along with this library; see the file COPYING.LIB.
22 If not, write to the Free Software Foundation,
23 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
26 #include "SQLiteChannel.h"
27 #import <Foundation/NSString.h>
30 @implementation NSString(SQLiteValues)
32 static Class NSStringClass = Nil;
33 static Class EOExprClass = Nil;
35 + (id)valueFromCString:(const char *)_cstr length:(int)_length
36 sqlite3Type:(NSString *)_type
37 attribute:(EOAttribute *)_attribute
38 adaptorChannel:(SQLiteChannel *)_channel
40 if (_cstr == NULL) return nil;
41 if (*_cstr == '\0') return @"";
42 if (NSStringClass == Nil) NSStringClass = [NSString class];
44 // TODO: cache IMP of selector
45 return [NSStringClass stringWithCString:_cstr];
48 + (id)valueFromBytes:(const void *)_bytes length:(int)_length
49 sqlite3Type:(NSString *)_type
50 attribute:(EOAttribute *)_attribute
51 adaptorChannel:(SQLiteChannel *)_channel
53 return [self notImplemented:_cmd];
56 - (NSString *)stringValueForSQLite3Type:(NSString *)_type
57 attribute:(EOAttribute *)_attribute
59 // TODO: all this looks slow ...
63 if ((len = [_type length]) == 0)
66 c1 = [_type characterAtIndex:0];
77 _type = [_type lowercaseString];
79 if (!([_type hasPrefix:@"char"] ||
80 [_type hasPrefix:@"varchar"] ||
81 [_type hasPrefix:@"text"]))
84 /* TODO: creates too many autoreleased strings :-( */
86 expr = [self stringByReplacingString:@"\\" withString:@"\\\\"];
88 if (EOExprClass == Nil) EOExprClass = [EOQuotedExpression class];
89 expr = [[EOExprClass alloc] initWithExpression:expr
90 quote:@"'" escape:@"\\'"];
91 s = [[expr expressionValueForContext:nil] retain];
93 return [s autorelease];
97 if ([[_type lowercaseString] hasPrefix:@"money"])
98 return [@"$" stringByAppendingString:self];
106 @end /* NSString(SQLiteValues) */