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120 lines
3.5 KiB
C++
120 lines
3.5 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_ULINEBREAK u"\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_ULINEBREAK u"\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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/// This is a wrapper class around all the C runtime functions.
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class nsCRT {
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public:
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enum {
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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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return int32_t(PL_strcmp(aStr1, aStr2));
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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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/* Some functions like `PL_strcasecmp` are reimplementations
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* of the their native POSIX counterparts, which breaks libFuzzer.
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* For this purpose, we use the natives instead when fuzzing.
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*/
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#if defined(LIBFUZZER) && defined(LINUX)
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return int32_t(::strcasecmp(aStr1, aStr2));
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#else
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return int32_t(PL_strcasecmp(aStr1, aStr2));
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#endif
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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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#if defined(LIBFUZZER) && defined(LINUX)
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int32_t result = int32_t(::strncasecmp(aStr1, aStr2, aMaxLen));
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#else
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int32_t result = int32_t(PL_strncasecmp(aStr1, aStr2, aMaxLen));
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#endif
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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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/// Case-insensitive substring search.
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static char* strcasestr(const char* aStr1, const char* aStr2) {
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#if defined(LIBFUZZER) && defined(LINUX)
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return const_cast<char*>(::strcasestr(aStr1, aStr2));
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#else
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return PL_strcasestr(aStr1, aStr2);
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#endif
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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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// 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 IsAsciiSpace(char16_t aChar) {
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return NS_IsAsciiWhitespace(aChar);
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}
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};
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inline bool NS_IS_SPACE(char16_t aChar) {
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return ((int(aChar) & 0x7f) == int(aChar)) && isspace(int(aChar));
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}
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#endif /* nsCRT_h___ */
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