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Annotation of XNU/libkern/c++/OSString.cpp, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22: /* IOString.m created by rsulack on Wed 17-Sep-1997 */
        !            23: /* IOString.cpp converted to C++ on Tue 1998-9-22 */
        !            24: 
        !            25: 
        !            26: #include <libkern/c++/OSString.h>
        !            27: #include <libkern/c++/OSSerialize.h>
        !            28: #include <libkern/c++/OSLib.h>
        !            29: 
        !            30: #define super OSObject
        !            31: 
        !            32: OSDefineMetaClassAndStructors(OSString, OSObject)
        !            33: 
        !            34: #ifdef DEBUG
        !            35: extern "C" {
        !            36:     extern int debug_container_malloc_size;
        !            37: };
        !            38: #define ACCUMSIZE(s) do { debug_container_malloc_size += (s); } while(0)
        !            39: #else
        !            40: #define ACCUMSIZE(s)
        !            41: #endif
        !            42: 
        !            43: bool OSString::initWithString(const OSString *aString)
        !            44: {
        !            45:     return initWithCString(aString->string);
        !            46: }
        !            47: 
        !            48: bool OSString::initWithCString(const char *cString)
        !            49: {
        !            50:     if (!cString || !super::init())
        !            51:         return false;
        !            52: 
        !            53:     length = strlen(cString) + 1;
        !            54:     string = (char *) kalloc(length);
        !            55:     if (!string)
        !            56:         return false;
        !            57: 
        !            58:     bcopy(cString, string, length);
        !            59: 
        !            60:     ACCUMSIZE(length);
        !            61: 
        !            62:     return true;
        !            63: }
        !            64: 
        !            65: bool OSString::initWithCStringNoCopy(const char *cString)
        !            66: {
        !            67:     if (!cString || !super::init())
        !            68:         return false;
        !            69: 
        !            70:     length = strlen(cString) + 1;
        !            71:     flags |= kOSStringNoCopy;
        !            72:     string = (char *) cString;
        !            73: 
        !            74:     return true;
        !            75: }
        !            76: 
        !            77: OSString *OSString::withString(const OSString *aString)
        !            78: {
        !            79:     OSString *me = new OSString;
        !            80: 
        !            81:     if (me && !me->initWithString(aString)) {
        !            82:         me->free();
        !            83:         return 0;
        !            84:     }
        !            85: 
        !            86:     return me;
        !            87: }
        !            88: 
        !            89: OSString *OSString::withCString(const char *cString)
        !            90: {
        !            91:     OSString *me = new OSString;
        !            92: 
        !            93:     if (me && !me->initWithCString(cString)) {
        !            94:         me->free();
        !            95:         return 0;
        !            96:     }
        !            97: 
        !            98:     return me;
        !            99: }
        !           100: 
        !           101: OSString *OSString::withCStringNoCopy(const char *cString)
        !           102: {
        !           103:     OSString *me = new OSString;
        !           104: 
        !           105:     if (me && !me->initWithCStringNoCopy(cString)) {
        !           106:         me->free();
        !           107:         return 0;
        !           108:     }
        !           109: 
        !           110:     return me;
        !           111: }
        !           112: 
        !           113: /* @@@ gvdl */
        !           114: #if 0
        !           115: OSString *OSString::stringWithFormat(const char *format, ...)
        !           116: {
        !           117: #ifndef KERNEL                 // mach3xxx
        !           118:     OSString *me;
        !           119:     va_list argList;
        !           120: 
        !           121:     if (!format)
        !           122:         return 0;
        !           123: 
        !           124:     va_start(argList, format);
        !           125:     me = stringWithCapacity(256);
        !           126:     me->length = vsnprintf(me->string, 256, format, argList);
        !           127:     me->length++;      // we include the null in the length
        !           128:     if (me->Length > 256)
        !           129:         me->Length = 256;
        !           130:     va_end (argList);
        !           131: 
        !           132:     return me;
        !           133: #else
        !           134:     return 0;
        !           135: #endif
        !           136: }
        !           137: #endif /* 0 */
        !           138: 
        !           139: void OSString::free()
        !           140: {
        !           141:     if ( !(flags & kOSStringNoCopy) && string) {
        !           142:         kfree((vm_offset_t)string, (vm_size_t)length);
        !           143:         ACCUMSIZE(-length);
        !           144:     }
        !           145: 
        !           146:     super::free();
        !           147: }
        !           148: 
        !           149: unsigned int OSString::getLength()  const { return length - 1; }
        !           150: 
        !           151: const char *OSString::getCStringNoCopy() const
        !           152: {
        !           153:     return string;
        !           154: }
        !           155: 
        !           156: bool OSString::setChar(char aChar, unsigned int index)
        !           157: {
        !           158:     if ( !(flags & kOSStringNoCopy) && index < length - 1) {
        !           159:         string[index] = aChar;
        !           160: 
        !           161:         return true;
        !           162:     }
        !           163:     else
        !           164:         return false;
        !           165: }
        !           166: 
        !           167: char OSString::getChar(unsigned int index) const
        !           168: {
        !           169:     if (index < length)
        !           170:         return string[index];
        !           171:     else
        !           172:         return '\0';
        !           173: }
        !           174: 
        !           175: 
        !           176: bool OSString::isEqualTo(const OSString *aString) const
        !           177: {
        !           178:     if (length != aString->length)
        !           179:         return false;
        !           180:     else
        !           181:         return isEqualTo((const char *) aString->string);
        !           182: }
        !           183: 
        !           184: bool OSString::isEqualTo(const char *aCString) const
        !           185: {
        !           186:     return strcmp(string, aCString) == 0;
        !           187: }
        !           188: 
        !           189: bool OSString::isEqualTo(const OSObject *obj) const
        !           190: {
        !           191:     OSString * str;
        !           192:     if ((str = OSDynamicCast(OSString, (OSObject *)obj )))
        !           193:         return isEqualTo(str);
        !           194:     else
        !           195:         return false;
        !           196: }
        !           197: 
        !           198: bool OSString::serialize(OSSerialize *s) const
        !           199: {
        !           200:     char *c = string;
        !           201: 
        !           202:     if (s->previouslySerialized(this)) return true;
        !           203: 
        !           204:     if (!s->addXMLStartTag(this, "string")) return false;
        !           205:     while (*c) {
        !           206:         if (*c == '<') {
        !           207:             if (!s->addString("&lt;")) return false;
        !           208:         } else if (*c == '>') {
        !           209:             if (!s->addString("&gt;")) return false;
        !           210:         } else if (*c == '&') {
        !           211:             if (!s->addString("&amp;")) return false;
        !           212:         } else {
        !           213:             if (!s->addChar(*c)) return false;
        !           214:         }
        !           215:         c++;
        !           216:     }   
        !           217: 
        !           218:     return s->addXMLEndTag("string");
        !           219: }

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