From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- xpcom/ds/nsCRT.h | 119 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 119 insertions(+) create mode 100644 xpcom/ds/nsCRT.h (limited to 'xpcom/ds/nsCRT.h') diff --git a/xpcom/ds/nsCRT.h b/xpcom/ds/nsCRT.h new file mode 100644 index 0000000000..14b46c5059 --- /dev/null +++ b/xpcom/ds/nsCRT.h @@ -0,0 +1,119 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ +#ifndef nsCRT_h___ +#define nsCRT_h___ + +#include +#include +#include "plstr.h" +#include "nscore.h" +#include "nsCRTGlue.h" + +#if defined(XP_WIN) +# define NS_LINEBREAK "\015\012" +# define NS_ULINEBREAK u"\015\012" +# define NS_LINEBREAK_LEN 2 +#else +# ifdef XP_UNIX +# define NS_LINEBREAK "\012" +# define NS_ULINEBREAK u"\012" +# define NS_LINEBREAK_LEN 1 +# endif /* XP_UNIX */ +#endif /* XP_WIN */ + +/// This is a wrapper class around all the C runtime functions. + +class nsCRT { + public: + enum { + LF = '\n' /* Line Feed */, + VTAB = '\v' /* Vertical Tab */, + CR = '\r' /* Carriage Return */ + }; + + /// String comparison. + static int32_t strcmp(const char* aStr1, const char* aStr2) { + return int32_t(PL_strcmp(aStr1, aStr2)); + } + + /// Case-insensitive string comparison. + static int32_t strcasecmp(const char* aStr1, const char* aStr2) { + /* Some functions like `PL_strcasecmp` are reimplementations + * of the their native POSIX counterparts, which breaks libFuzzer. + * For this purpose, we use the natives instead when fuzzing. + */ +#if defined(LIBFUZZER) && defined(LINUX) + return int32_t(::strcasecmp(aStr1, aStr2)); +#else + return int32_t(PL_strcasecmp(aStr1, aStr2)); +#endif + } + + /// Case-insensitive string comparison with length + static int32_t strncasecmp(const char* aStr1, const char* aStr2, + uint32_t aMaxLen) { +#if defined(LIBFUZZER) && defined(LINUX) + int32_t result = int32_t(::strncasecmp(aStr1, aStr2, aMaxLen)); +#else + int32_t result = int32_t(PL_strncasecmp(aStr1, aStr2, aMaxLen)); +#endif + // Egads. PL_strncasecmp is returning *very* negative numbers. + // Some folks expect -1,0,1, so let's temper its enthusiasm. + if (result < 0) { + result = -1; + } + return result; + } + + /// Case-insensitive substring search. + static char* strcasestr(const char* aStr1, const char* aStr2) { +#if defined(LIBFUZZER) && defined(LINUX) + return const_cast(::strcasestr(aStr1, aStr2)); +#else + return PL_strcasestr(aStr1, aStr2); +#endif + } + + /** + + 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 != nullptr) { + // While there are tokens in "string" + printf(" %s\n", token); + // Get next token: + token = nsCRT::strtok(newStr, seps, &newStr); + } + } + * WARNING - STRTOK WHACKS str THE FIRST TIME IT IS CALLED * + * MAKE A COPY OF str IF YOU NEED TO USE IT AFTER strtok() * + */ + static char* strtok(char* aStr, const char* aDelims, char** aNewStr); + + /// Like strcmp except for ucs2 strings + static int32_t strcmp(const char16_t* aStr1, const char16_t* aStr2); + + // String to longlong + static int64_t atoll(const char* aStr); + + static char ToUpper(char aChar) { return NS_ToUpper(aChar); } + static char ToLower(char aChar) { return NS_ToLower(aChar); } + + static bool IsAsciiSpace(char16_t aChar) { + return NS_IsAsciiWhitespace(aChar); + } +}; + +inline bool NS_IS_SPACE(char16_t aChar) { + return ((int(aChar) & 0x7f) == int(aChar)) && isspace(int(aChar)); +} + +#endif /* nsCRT_h___ */ -- cgit v1.2.3