Artifact 196faf3bb54978ce0fc3e0c6c9f663aa2d1db5d736472dc518116a6c3a9c9e23:
- File
src/OFString+XMLUnescaping.m
— part of check-in
[13ee56edf3]
at
2014-06-21 21:43:43
on branch trunk
— Move all macros from OFObject.h to macros.h
This means that OFObject.h imports macros.h now, making it unnecessary
to manually import macros.h in almost every file. And while at it, also
import autorelease.h in OFObject.h, so that this doesn't need to be
manually imported in almost every file as well. (user: js, size: 4934) [annotate] [blame] [check-ins using]
/* * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014 * Jonathan Schleifer <js@webkeks.org> * * All rights reserved. * * This file is part of ObjFW. It may be distributed under the terms of the * Q Public License 1.0, which can be found in the file LICENSE.QPL included in * the packaging of this file. * * Alternatively, it may be distributed under the terms of the GNU General * Public License, either version 2 or 3, which can be found in the file * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this * file. */ #include "config.h" #include <string.h> #import "OFString.h" #import "OFInvalidFormatException.h" int _OFString_XMLUnescaping_reference; static OF_INLINE OFString* parseNumericEntity(const char *entity, size_t length) { of_unichar_t c; size_t i; char buffer[5]; if (length == 1 || *entity != '#') return nil; c = 0; entity++; length--; if (entity[0] == 'x') { if (length == 1) return nil; entity++; length--; for (i = 0; i < length; i++) { if (entity[i] >= '0' && entity[i] <= '9') c = (c << 4) | (entity[i] - '0'); else if (entity[i] >= 'A' && entity[i] <= 'F') c = (c << 4) | (entity[i] - 'A' + 10); else if (entity[i] >= 'a' && entity[i] <= 'f') c = (c << 4) | (entity[i] - 'a' + 10); else return nil; } } else { for (i = 0; i < length; i++) { if (entity[i] >= '0' && entity[i] <= '9') c = (c * 10) + (entity[i] - '0'); else return nil; } } if ((i = of_string_utf8_encode(c, buffer)) == 0) return nil; buffer[i] = 0; return [OFString stringWithUTF8String: buffer length: i]; } static OFString* parseEntities(OFString *self, id (*lookup)(void*, OFString*, OFString*), void *context) { const char *string; size_t i, last, length; bool inEntity; OFMutableString *ret; string = [self UTF8String]; length = [self UTF8StringLength]; ret = [OFMutableString string]; last = 0; inEntity = false; for (i = 0; i < length; i++) { if (!inEntity && string[i] == '&') { [ret appendUTF8String: string + last length: i - last]; last = i + 1; inEntity = true; } else if (inEntity && string[i] == ';') { const char *entity = string + last; size_t entityLength = i - last; if (entityLength == 2 && memcmp(entity, "lt", 2) == 0) [ret appendCString: "<" encoding: OF_STRING_ENCODING_ASCII length: 1]; else if (entityLength == 2 && memcmp(entity, "gt", 2) == 0) [ret appendCString: ">" encoding: OF_STRING_ENCODING_ASCII length: 1]; else if (entityLength == 4 && memcmp(entity, "quot", 4) == 0) [ret appendCString: "\"" encoding: OF_STRING_ENCODING_ASCII length: 1]; else if (entityLength == 4 && memcmp(entity, "apos", 4) == 0) [ret appendCString: "'" encoding: OF_STRING_ENCODING_ASCII length: 1]; else if (entityLength == 3 && memcmp(entity, "amp", 3) == 0) [ret appendCString: "&" encoding: OF_STRING_ENCODING_ASCII length: 1]; else if (entity[0] == '#') { void *pool; OFString *tmp; pool = objc_autoreleasePoolPush(); tmp = parseNumericEntity(entity, entityLength); if (tmp == nil) @throw [OFInvalidFormatException exception]; [ret appendString: tmp]; objc_autoreleasePoolPop(pool); } else { void *pool; OFString *name, *tmp; pool = objc_autoreleasePoolPush(); name = [OFString stringWithUTF8String: entity length: entityLength]; tmp = lookup(context, self, name); if (tmp == nil) @throw [OFInvalidFormatException exception]; [ret appendString: tmp]; objc_autoreleasePoolPop(pool); } last = i + 1; inEntity = false; } } if (inEntity) @throw [OFInvalidFormatException exception]; [ret appendUTF8String: string + last length: i - last]; [ret makeImmutable]; return ret; } static id lookupUsingDelegate(void *context, OFString *self, OFString *entity) { id <OFStringXMLUnescapingDelegate> delegate = context; if (delegate == nil) return nil; return [delegate string: self containsUnknownEntityNamed: entity]; } #ifdef OF_HAVE_BLOCKS static id lookupUsingBlock(void *context, OFString *self, OFString *entity) { of_string_xml_unescaping_block_t block = context; if (block == NULL) return nil; return block(self, entity); } #endif @implementation OFString (XMLUnescaping) - (OFString*)stringByXMLUnescaping { return [self stringByXMLUnescapingWithDelegate: nil]; } - (OFString*)stringByXMLUnescapingWithDelegate: (id <OFStringXMLUnescapingDelegate>)delegate { return parseEntities(self, lookupUsingDelegate, delegate); } #ifdef OF_HAVE_BLOCKS - (OFString*)stringByXMLUnescapingWithBlock: (of_string_xml_unescaping_block_t)block { return parseEntities(self, lookupUsingBlock, block); } #endif @end