187 lines
6.2 KiB
C++
187 lines
6.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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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 <ctype.h>
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#include "plstr.h"
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#include "nscore.h"
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#include "nsCRTGlue.h"
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#if defined(XP_WIN)
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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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# ifdef XP_UNIX
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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_WIN */
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extern const char16_t 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 nsCRT
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{
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public:
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enum
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{
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LF = '\n' /* Line Feed */,
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VTAB = '\v' /* Vertical Tab */,
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CR = '\r' /* Carriage Return */
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};
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/// String comparison.
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static int32_t strcmp(const char* aStr1, const char* aStr2)
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{
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return int32_t(PL_strcmp(aStr1, aStr2));
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}
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static int32_t strncmp(const char* aStr1, const char* aStr2,
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uint32_t aMaxLen)
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{
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return int32_t(PL_strncmp(aStr1, aStr2, aMaxLen));
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}
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/// Case-insensitive string comparison.
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static int32_t strcasecmp(const char* aStr1, const char* aStr2)
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{
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return int32_t(PL_strcasecmp(aStr1, aStr2));
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}
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/// Case-insensitive string comparison with length
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static int32_t strncasecmp(const char* aStr1, const char* aStr2,
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uint32_t aMaxLen)
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{
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int32_t result = int32_t(PL_strncasecmp(aStr1, aStr2, 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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}
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return result;
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}
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static int32_t strncmp(const char* aStr1, const char* aStr2, int32_t aMaxLen)
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{
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// inline the first test (assumes strings are not null):
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int32_t diff =
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((const unsigned char*)aStr1)[0] - ((const unsigned char*)aStr2)[0];
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if (diff != 0) {
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return diff;
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}
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return int32_t(PL_strncmp(aStr1, aStr2, unsigned(aMaxLen)));
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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 != nullptr) {
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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* aStr, const char* aDelims, char** aNewStr);
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/// Like strcmp except for ucs2 strings
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static int32_t strcmp(const char16_t* aStr1, const char16_t* aStr2);
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/// Like strcmp except for ucs2 strings
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static int32_t strncmp(const char16_t* aStr1, const char16_t* aStr2,
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uint32_t aMaxLen);
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// The GNU libc has memmem, which is strstr except for binary data
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// This is our own implementation that uses memmem on platforms
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// where it's available.
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static const char* memmem(const char* aHaystack, uint32_t aHaystackLen,
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const char* aNeedle, uint32_t aNeedleLen);
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// String to longlong
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static int64_t atoll(const char* aStr);
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static char ToUpper(char aChar) { return NS_ToUpper(aChar); }
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static char ToLower(char aChar) { return NS_ToLower(aChar); }
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static bool IsUpper(char aChar) { return NS_IsUpper(aChar); }
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static bool IsLower(char aChar) { return NS_IsLower(aChar); }
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static bool IsAscii(char16_t aChar) { return NS_IsAscii(aChar); }
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static bool IsAscii(const char16_t* aString) { return NS_IsAscii(aString); }
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static bool IsAsciiAlpha(char16_t aChar) { return NS_IsAsciiAlpha(aChar); }
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static bool IsAsciiDigit(char16_t aChar) { return NS_IsAsciiDigit(aChar); }
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static bool IsAsciiSpace(char16_t aChar) { return NS_IsAsciiWhitespace(aChar); }
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static bool IsAscii(const char* aString) { return NS_IsAscii(aString); }
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static bool IsAscii(const char* aString, uint32_t aLength)
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{
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return NS_IsAscii(aString, aLength);
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}
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};
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inline bool
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NS_IS_SPACE(char16_t aChar)
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{
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return ((int(aChar) & 0x7f) == int(aChar)) && isspace(int(aChar));
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}
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#define NS_IS_CNTRL(i) ((((unsigned int) (i)) > 0x7f) ? (int) 0 : iscntrl(i))
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#define NS_IS_DIGIT(i) ((((unsigned int) (i)) > 0x7f) ? (int) 0 : isdigit(i))
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#if defined(XP_WIN)
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#define NS_IS_ALPHA(VAL) (isascii((int)(VAL)) && isalpha((int)(VAL)))
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#else
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#define NS_IS_ALPHA(VAL) ((((unsigned int) (VAL)) > 0x7f) ? (int) 0 : isalpha((int)(VAL)))
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#endif
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#endif /* nsCRT_h___ */
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