зеркало из https://github.com/mozilla/gecko-dev.git
289 строки
9.8 KiB
C++
289 строки
9.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsCRT_h___
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#define nsCRT_h___
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#include <stdlib.h>
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#include <string.h>
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#include "plstr.h"
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#include "nscore.h"
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#include "prtypes.h"
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#include "nsCppSharedAllocator.h"
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#ifdef XP_MAC
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# define NS_LINEBREAK "\015"
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# define NS_LINEBREAK_LEN 1
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#else
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# ifdef XP_PC
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# define NS_LINEBREAK "\015\012"
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# define NS_LINEBREAK_LEN 2
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# else
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# if defined(XP_UNIX) || defined(XP_BEOS)
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# define NS_LINEBREAK "\012"
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# define NS_LINEBREAK_LEN 1
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# endif /* XP_UNIX */
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# endif /* XP_PC */
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#endif /* XP_MAC */
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extern const PRUnichar kIsoLatin1ToUCS2[256];
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// This macro can be used in a class declaration for classes that want
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// to ensure that their instance memory is zeroed.
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#define NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW \
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void* operator new(size_t sz) CPP_THROW_NEW { \
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void* rv = ::operator new(sz); \
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if (rv) { \
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memset(rv, 0, sz); \
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} \
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return rv; \
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} \
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void operator delete(void* ptr) { \
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::operator delete(ptr); \
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}
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// This macro works with the next macro to declare a non-inlined
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// version of the above.
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#define NS_DECL_ZEROING_OPERATOR_NEW \
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void* operator new(size_t sz) CPP_THROW_NEW; \
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void operator delete(void* ptr);
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#define NS_IMPL_ZEROING_OPERATOR_NEW(_class) \
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void* _class::operator new(size_t sz) CPP_THROW_NEW { \
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void* rv = ::operator new(sz); \
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if (rv) { \
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memset(rv, 0, sz); \
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} \
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return rv; \
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} \
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void _class::operator delete(void* ptr) { \
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::operator delete(ptr); \
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}
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// Freeing helper
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#define CRTFREEIF(x) if (x) { nsCRT::free(x); x = 0; }
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/// This is a wrapper class around all the C runtime functions.
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class NS_COM nsCRT {
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public:
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enum {
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TAB='\t' /* Horizontal Tab */,
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LF='\n' /* Line Feed */,
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VTAB='\v' /* Vertical Tab */,
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FF='\f' /* Form Feed */,
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CR='\r' /* Carriage Return */
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};
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/***
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*** The following nsCRT::mem* functions are no longer
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*** supported, please use the corresponding lib C
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*** functions instead.
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***
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*** nsCRT::memcpy()
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*** nsCRT::memcmp()
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*** nsCRT::memmove()
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*** nsCRT::memset()
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*** nsCRT::zero()
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***
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*** Additionally, the following char* string utilities
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*** are no longer supported, please use the
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*** corresponding lib C functions instead.
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***
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*** nsCRT::strlen()
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***
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***/
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/** Compute the string length of s
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@param s the string in question
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@return the length of s
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*/
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static PRUint32 strlen(const char* s) {
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return PRUint32(::strlen(s));
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}
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/// Compare s1 and s2.
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static PRInt32 strcmp(const char* s1, const char* s2) {
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return PRInt32(PL_strcmp(s1, s2));
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}
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static PRInt32 strncmp(const char* s1, const char* s2,
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PRUint32 aMaxLen) {
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return PRInt32(PL_strncmp(s1, s2, aMaxLen));
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}
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/// Case-insensitive string comparison.
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static PRInt32 strcasecmp(const char* s1, const char* s2) {
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return PRInt32(PL_strcasecmp(s1, s2));
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}
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/// Case-insensitive string comparison with length
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static PRInt32 strncasecmp(const char* s1, const char* s2, PRUint32 aMaxLen) {
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PRInt32 result=PRInt32(PL_strncasecmp(s1, s2, aMaxLen));
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//Egads. PL_strncasecmp is returning *very* negative numbers.
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//Some folks expect -1,0,1, so let's temper its enthusiasm.
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if (result<0)
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result=-1;
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return result;
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}
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static PRInt32 strncmp(const char* s1, const char* s2, PRInt32 aMaxLen) {
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// inline the first test (assumes strings are not null):
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PRInt32 diff = ((const unsigned char*)s1)[0] - ((const unsigned char*)s2)[0];
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if (diff != 0) return diff;
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return PRInt32(PL_strncmp(s1,s2,unsigned(aMaxLen)));
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}
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static char* strdup(const char* str) {
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return PL_strdup(str);
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}
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static char* strndup(const char* str, PRUint32 len) {
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return PL_strndup(str, len);
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}
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static void free(char* str) {
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PL_strfree(str);
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}
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/**
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How to use this fancy (thread-safe) version of strtok:
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void main(void) {
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printf("%s\n\nTokens:\n", string);
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// Establish string and get the first token:
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char* newStr;
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token = nsCRT::strtok(string, seps, &newStr);
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while (token != NULL) {
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// While there are tokens in "string"
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printf(" %s\n", token);
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// Get next token:
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token = nsCRT::strtok(newStr, seps, &newStr);
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}
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}
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* WARNING - STRTOK WHACKS str THE FIRST TIME IT IS CALLED *
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* MAKE A COPY OF str IF YOU NEED TO USE IT AFTER strtok() *
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*/
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static char* strtok(char* str, const char* delims, char* *newStr);
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/// Like strlen except for ucs2 strings
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static PRUint32 strlen(const PRUnichar* s);
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/// Like strcmp except for ucs2 strings
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static PRInt32 strcmp(const PRUnichar* s1, const PRUnichar* s2);
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/// Like strcmp except for ucs2 strings
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static PRInt32 strncmp(const PRUnichar* s1, const PRUnichar* s2,
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PRUint32 aMaxLen);
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// You must use nsCRT::free(PRUnichar*) to free memory allocated
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// by nsCRT::strdup(PRUnichar*).
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static PRUnichar* strdup(const PRUnichar* str);
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// You must use nsCRT::free(PRUnichar*) to free memory allocated
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// by strndup(PRUnichar*, PRUint32).
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static PRUnichar* strndup(const PRUnichar* str, PRUint32 len);
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static void free(PRUnichar* str) {
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nsCppSharedAllocator<PRUnichar> shared_allocator;
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shared_allocator.deallocate(str, 0 /*we never new or kept the size*/);
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}
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// Computes the hashcode for a c-string, returns the string length as
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// an added bonus.
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static PRUint32 HashCode(const char* str,
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PRUint32* resultingStrLen = nsnull);
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// Computes the hashcode for a ucs2 string, returns the string length
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// as an added bonus.
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static PRUint32 HashCode(const PRUnichar* str,
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PRUint32* resultingStrLen = nsnull);
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// Computes a hashcode for a ucs2 string that returns the same thing
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// as the HashCode method taking a |char*| would if the string were
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// converted to UTF8. Returns the string length as an added bonus.
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static PRUint32 HashCodeAsUTF8(const PRUnichar* str,
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PRUint32* resultingStrLen = nsnull);
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// Computes the hashcode for a buffer with a specified length.
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static PRUint32 BufferHashCode(const char* str, PRUint32 strLen);
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// Computes the hashcode for a buffer with a specified length.
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static PRUint32 BufferHashCode(const PRUnichar* str, PRUint32 strLen);
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// String to longlong
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static PRInt64 atoll(const char *str);
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static char ToUpper(char aChar);
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static char ToLower(char aChar);
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static PRBool IsUpper(char aChar);
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static PRBool IsLower(char aChar);
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static PRBool IsAscii(PRUnichar aChar);
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static PRBool IsAscii(const PRUnichar* aString);
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static PRBool IsAsciiAlpha(PRUnichar aChar);
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static PRBool IsAsciiDigit(PRUnichar aChar);
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static PRBool IsAsciiSpace(PRUnichar aChar);
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static PRBool IsAscii(const char* aString);
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};
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#define FF '\014'
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#define TAB '\011'
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#define CRSTR "\015"
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#define LFSTR "\012"
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#define CRLF "\015\012" /* A CR LF equivalent string */
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#if defined(XP_MAC)
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#define FILE_PATH_SEPARATOR ":"
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#define FILE_ILLEGAL_CHARACTERS ""
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#elif defined(XP_WIN) || defined(XP_OS2)
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#define FILE_PATH_SEPARATOR "\\"
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#define FILE_ILLEGAL_CHARACTERS "/:*?\"<>|"
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#elif defined(XP_UNIX) || defined(XP_BEOS)
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#define FILE_PATH_SEPARATOR "/"
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#define FILE_ILLEGAL_CHARACTERS ""
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#else
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#error need_to_define_your_file_path_separator_and_illegal_characters
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#endif
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#endif /* nsCRT_h___ */
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