The Tor Browser: comparison toolkit/crashreporter/google-breakpad/src/common/windows/string

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+:a43986c082fc
+// Copyright (c) 2006, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+// string_utils-inl.h: Safer string manipulation on Windows, supporting
+// pre-MSVC8 environments.
+#ifndef COMMON_WINDOWS_STRING_UTILS_INL_H__
+#define COMMON_WINDOWS_STRING_UTILS_INL_H__
+#include <stdarg.h>
+#include <wchar.h>
+#include <string>
+// The "ll" printf format size specifier corresponding to |long long| was
+// intrudced in MSVC8.  Earlier versions did not provide this size specifier,
+// but "I64" can be used to print 64-bit types.  Don't use "I64" where "ll"
+// is available, in the event of oddball systems where |long long| is not
+// 64 bits wide.
+#if _MSC_VER >= 1400  // MSVC 2005/8
+#define WIN_STRING_FORMAT_LL "ll"
+#else  // MSC_VER >= 1400
+#define WIN_STRING_FORMAT_LL "I64"
+#endif  // MSC_VER >= 1400
+// A nonconforming version of swprintf, without the length argument, was
+// included with the CRT prior to MSVC8.  Although a conforming version was
+// also available via an overload, it is not reliably chosen.  _snwprintf
+// behaves as a standards-confirming swprintf should, so force the use of
+// _snwprintf when using older CRTs.
+#if _MSC_VER < 1400  // MSVC 2005/8
+#define swprintf _snwprintf
+#else
+// For MSVC8 and newer, swprintf_s is the recommended method. Conveniently,
+// it takes the same argument list as swprintf.
+#define swprintf swprintf_s
+#endif  // MSC_VER < 1400
+namespace google_breakpad {
+using std::string;
+using std::wstring;
+class WindowsStringUtils {
+public:
+// Roughly equivalent to MSVC8's wcscpy_s, except pre-MSVC8, this does
+// not fail if source is longer than destination_size.  The destination
+// buffer is always 0-terminated.
+static void safe_wcscpy(wchar_t *destination, size_t destination_size,
+const wchar_t *source);
+// Roughly equivalent to MSVC8's wcsncpy_s, except that _TRUNCATE cannot
+// be passed directly, and pre-MSVC8, this will not fail if source or count
+// are longer than destination_size.  The destination buffer is always
+// 0-terminated.
+static void safe_wcsncpy(wchar_t *destination, size_t destination_size,
+const wchar_t *source, size_t count);
+// Performs multi-byte to wide character conversion on C++ strings, using
+// mbstowcs_s (MSVC8) or mbstowcs (pre-MSVC8).  Returns false on failure,
+// without setting wcs.
+static bool safe_mbstowcs(const string &mbs, wstring *wcs);
+// The inverse of safe_mbstowcs.
+static bool safe_wcstombs(const wstring &wcs, string *mbs);
+// Returns the base name of a file, e.g. strips off the path.
+static wstring GetBaseName(const wstring &filename);
+private:
+// Disallow instantiation and other object-based operations.
+WindowsStringUtils();
+WindowsStringUtils(const WindowsStringUtils&);
+~WindowsStringUtils();
+void operator=(const WindowsStringUtils&);
+};
+// static
+inline void WindowsStringUtils::safe_wcscpy(wchar_t *destination,
+size_t destination_size,
+const wchar_t *source) {
+#if _MSC_VER >= 1400  // MSVC 2005/8
+wcscpy_s(destination, destination_size, source);
+#else  // _MSC_VER >= 1400
+// Pre-MSVC 2005/8 doesn't have wcscpy_s.  Simulate it with wcsncpy.
+// wcsncpy doesn't 0-terminate the destination buffer if the source string
+// is longer than size.  Ensure that the destination is 0-terminated.
+wcsncpy(destination, source, destination_size);
+if (destination && destination_size)
+destination[destination_size - 1] = 0;
+#endif  // _MSC_VER >= 1400
+}
+// static
+inline void WindowsStringUtils::safe_wcsncpy(wchar_t *destination,
+size_t destination_size,
+const wchar_t *source,
+size_t count) {
+#if _MSC_VER >= 1400  // MSVC 2005/8
+wcsncpy_s(destination, destination_size, source, count);
+#else  // _MSC_VER >= 1400
+// Pre-MSVC 2005/8 doesn't have wcsncpy_s.  Simulate it with wcsncpy.
+// wcsncpy doesn't 0-terminate the destination buffer if the source string
+// is longer than size.  Ensure that the destination is 0-terminated.
+if (destination_size < count)
+count = destination_size;
+wcsncpy(destination, source, count);
+if (destination && count)
+destination[count - 1] = 0;
+#endif  // _MSC_VER >= 1400
+}
+}  // namespace google_breakpad
+#endif  // COMMON_WINDOWS_STRING_UTILS_INL_H__

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comparison: toolkit/crashreporter/google-breakpad/src/common/windows/string_utils-inl.h

toolkit/crashreporter/google-breakpad/src/common/windows/string_utils-inl.h