/* Copyright (C) 2000-2003 SKYRIX Software AG This file is part of OGo OGo 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 2, or (at your option) any later version. OGo 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 OGo; see the file COPYING. If not, write to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ // $Id$ #include "NGStringScanEnumerator.h" #include "common.h" #include @implementation NGStringScanEnumerator - (id)initWithData:(NSData *)_data maxLength:(unsigned int)_length { if (_data == nil) { [self release]; return nil; } if ((self = [super init])) { self->data = [_data retain]; self->curPos = 0; self->maxLength = _length; } return self; } + (id)enumeratorWithData:(NSData *)_data maxLength:(unsigned int)_length { return [[[self alloc] initWithData:_data maxLength:_length] autorelease]; } - (void)dealloc { [self->data release]; [super dealloc]; } - (NSString *)nextObject { register int i; const unsigned char *bytes; unsigned int length; register int startPos = -1; bytes = [self->data bytes]; length = [self->data length]; if (length == 0) { [self->data release]; self->data = nil; return nil; } for (i = self->curPos; i < length; i++) { if (isprint(bytes[i])) { if (startPos == -1) startPos = i; } else { if (startPos != -1) { if ((i - startPos) >= self->maxLength) { self->curPos = i; return [NSString stringWithCString:(bytes + startPos) length:(i - startPos)]; } startPos = -1; } } } /* end reached (can release data) */ [self->data release]; self->data = nil; return nil; } @end /* NGStringScanEnumerator */ @implementation NSData(NGStringScanEnumerator) - (NSEnumerator *)stringScanEnumeratorWithMaxStringLength:(unsigned int)_max { return [NGStringScanEnumerator enumeratorWithData:self maxLength:_length]; } - (NSEnumerator *)stringScanEnumerator { return [self stringScanEnumeratorWithMaxStringLength:256]; } @end /* NSData(Strings) */