gecko-dev/xpcom/ds/nsCRT.h

201 строка
6.4 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsCRT_h___
#define nsCRT_h___
#include <stdlib.h>
#include <string.h>
#include "plstr.h"
#include "nscore.h"
#include "prtypes.h"
#define CR '\015'
#define LF '\012'
#define VTAB '\013'
#define FF '\014'
#define TAB '\011'
#define CRLF "\015\012" /* A CR LF equivalent string */
extern const PRUnichar kIsoLatin1ToUCS2[256];
// This macro can be used in a class declaration for classes that want
// to ensure that their instance memory is zeroed.
#define NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW \
void* operator new(size_t sz) { \
void* rv = ::operator new(sz); \
if (rv) { \
nsCRT::zero(rv, sz); \
} \
return rv; \
} \
void operator delete(void* ptr) { \
::operator delete(ptr); \
}
// This macro works with the next macro to declare a non-inlined
// version of the above.
#define NS_DECL_ZEROING_OPERATOR_NEW \
void* operator new(size_t sz); \
void operator delete(void* ptr);
#define NS_IMPL_ZEROING_OPERATOR_NEW(_class) \
void* _class::operator new(size_t sz) { \
void* rv = ::operator new(sz); \
if (rv) { \
nsCRT::zero(rv, sz); \
} \
return rv; \
} \
void _class::operator delete(void* ptr) { \
::operator delete(ptr); \
}
/// This is a wrapper class around all the C runtime functions.
class NS_BASE nsCRT {
public:
/** Copy bytes from aSrc to aDest.
@param aDest the destination address
@param aSrc the source address
@param aCount the number of bytes to copy
*/
static void memcpy(void* aDest, const void* aSrc, PRUint32 aCount) {
::memcpy(aDest, aSrc, (size_t)aCount);
}
static void memmove(void* aDest, const void* aSrc, PRUint32 aCount) {
::memmove(aDest, aSrc, (size_t)aCount);
}
static void memset(void* aDest, PRUint8 aByte, PRUint32 aCount) {
::memset(aDest, aByte, aCount);
}
static void zero(void* aDest, PRUint32 aCount) {
::memset(aDest, 0, (size_t)aCount);
}
/** Compute the string length of s
@param s the string in question
@return the length of s
*/
static PRUint32 strlen(const char* s) {
return PRUint32(::strlen(s));
}
/// Compare s1 and s2.
static PRInt32 strcmp(const char* s1, const char* s2) {
return PRUint32(PL_strcmp(s1, s2));
}
static PRUint32 strncmp(const char* s1, const char* s2,
PRUint32 aMaxLen) {
return PRInt32(PL_strncmp(s1, s2, aMaxLen));
}
/// Case-insensitive string comparison.
static PRInt32 strcasecmp(const char* s1, const char* s2) {
return PRInt32(PL_strcasecmp(s1, s2));
}
/// Case-insensitive string comparison with length
static PRInt32 strncasecmp(const char* s1, const char* s2, PRUint32 aMaxLen) {
return PRInt32(PL_strncasecmp(s1, s2, aMaxLen));
}
static PRInt32 strncmp(const char* s1, const char* s2, PRInt32 aMaxLen) {
return PRInt32(PL_strncmp(s1,s2,aMaxLen));
}
static char* strdup(const char* str) {
return PL_strdup(str);
}
/**
How to use this fancy (thread-safe) version of strtok:
void main( void ) {
printf( "%s\n\nTokens:\n", string );
// Establish string and get the first token:
char* newStr;
token = nsCRT::strtok( string, seps, &newStr );
while( token != NULL ) {
// While there are tokens in "string"
printf( " %s\n", token );
// Get next token:
token = nsCRT::strtok( newStr, seps, &newStr );
}
}
*/
static char* strtok(char* str, const char* delims, char* *newStr);
/// Like strlen except for ucs2 strings
static PRUint32 strlen(const PRUnichar* s);
/// Like strcmp except for ucs2 strings
static PRInt32 strcmp(const PRUnichar* s1, const PRUnichar* s2);
/// Like strcmp except for ucs2 strings
static PRInt32 strncmp(const PRUnichar* s1, const PRUnichar* s2,
PRUint32 aMaxLen);
/// Like strcasecmp except for ucs2 strings
static PRInt32 strcasecmp(const PRUnichar* s1, const PRUnichar* s2);
/// Like strncasecmp except for ucs2 strings
static PRInt32 strncasecmp(const PRUnichar* s1, const PRUnichar* s2,
PRUint32 aMaxLen);
/// Like strcmp with a char* and a ucs2 string
static PRInt32 strcmp(const PRUnichar* s1, const char* s2);
/// Like strncmp with a char* and a ucs2 string
static PRInt32 strncmp(const PRUnichar* s1, const char* s2,
PRUint32 aMaxLen);
/// Like strcasecmp with a char* and a ucs2 string
static PRInt32 strcasecmp(const PRUnichar* s1, const char* s2);
/// Like strncasecmp with a char* and a ucs2 string
static PRInt32 strncasecmp(const PRUnichar* s1, const char* s2,
PRUint32 aMaxLen);
// Note: uses new[] to allocate memory, so you must use delete[] to
// free the memory
static PRUnichar* strdup(const PRUnichar* str);
/// Compute a hashcode for a ucs2 string
static PRUint32 HashValue(const PRUnichar* s1);
/// Same as above except that we return the length in s1len
static PRUint32 HashValue(const PRUnichar* s1, PRUint32* s1len);
/// String to integer.
static PRInt32 atoi( const PRUnichar *string );
static PRUnichar ToUpper(PRUnichar aChar);
static PRUnichar ToLower(PRUnichar aChar);
static PRBool IsUpper(PRUnichar aChar);
static PRBool IsLower(PRUnichar aChar);
};
#endif /* nsCRT_h___ */