/* Copyright (C) 2004 Helge Hess This file is part of OpenGroupware.org. 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. */ #include "NSString+ICal.h" #include "common.h" @implementation NSString(ICal) - (unsigned)numberOfUnsafeICalCharacters { unsigned i, len, cnt; if ((len = [self length]) == 0) return 0; for (i = 0, cnt = 0; i < len; i++) { unichar c; c = [self characterAtIndex:i]; if (c == ',' || c == ';' || c == '\n' || c == '\\') cnt++; } return cnt; } - (NSString *)stringByEscapingUnsafeICalCharacters { unsigned i, cnt, len; unichar *newStr; NSString *result; if ((cnt = [self numberOfUnsafeICalCharacters]) == 0) return self; len = [self length]; newStr = calloc(len + cnt + 10, sizeof(unichar)); for (i = 0, cnt = 0; i < len; i++) { unichar c; c = [self characterAtIndex:i]; if (c == ',' || c == ';' || c == '\\') { newStr[i + cnt] = '\\'; cnt++; } else if (c == '\n') { newStr[i + cnt] = '\\'; cnt++; c = 'n'; } newStr[i + cnt] = c; } newStr[i + cnt] = '\0'; result = [NSString stringWithCharacters:newStr length:(i + cnt)]; if (newStr != NULL) free(newStr); newStr = NULL; return result; } @end /* NSString(ICal) */