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-rw-r--r--xpcom/ds/nsCRT.h119
1 files changed, 119 insertions, 0 deletions
diff --git a/xpcom/ds/nsCRT.h b/xpcom/ds/nsCRT.h
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+/* -*- 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 <stdlib.h>
+#include <ctype.h>
+#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<char*>(::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___ */