1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/toolkit/crashreporter/google-breakpad/src/common/windows/string_utils-inl.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,142 @@
1.4 +// Copyright (c) 2006, Google Inc.
1.5 +// All rights reserved.
1.6 +//
1.7 +// Redistribution and use in source and binary forms, with or without
1.8 +// modification, are permitted provided that the following conditions are
1.9 +// met:
1.10 +//
1.11 +// * Redistributions of source code must retain the above copyright
1.12 +// notice, this list of conditions and the following disclaimer.
1.13 +// * Redistributions in binary form must reproduce the above
1.14 +// copyright notice, this list of conditions and the following disclaimer
1.15 +// in the documentation and/or other materials provided with the
1.16 +// distribution.
1.17 +// * Neither the name of Google Inc. nor the names of its
1.18 +// contributors may be used to endorse or promote products derived from
1.19 +// this software without specific prior written permission.
1.20 +//
1.21 +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
1.22 +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
1.23 +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
1.24 +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
1.25 +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
1.26 +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
1.27 +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
1.28 +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
1.29 +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
1.30 +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
1.31 +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.32 +
1.33 +// string_utils-inl.h: Safer string manipulation on Windows, supporting
1.34 +// pre-MSVC8 environments.
1.35 +
1.36 +#ifndef COMMON_WINDOWS_STRING_UTILS_INL_H__
1.37 +#define COMMON_WINDOWS_STRING_UTILS_INL_H__
1.38 +
1.39 +#include <stdarg.h>
1.40 +#include <wchar.h>
1.41 +
1.42 +#include <string>
1.43 +
1.44 +// The "ll" printf format size specifier corresponding to |long long| was
1.45 +// intrudced in MSVC8. Earlier versions did not provide this size specifier,
1.46 +// but "I64" can be used to print 64-bit types. Don't use "I64" where "ll"
1.47 +// is available, in the event of oddball systems where |long long| is not
1.48 +// 64 bits wide.
1.49 +#if _MSC_VER >= 1400 // MSVC 2005/8
1.50 +#define WIN_STRING_FORMAT_LL "ll"
1.51 +#else // MSC_VER >= 1400
1.52 +#define WIN_STRING_FORMAT_LL "I64"
1.53 +#endif // MSC_VER >= 1400
1.54 +
1.55 +// A nonconforming version of swprintf, without the length argument, was
1.56 +// included with the CRT prior to MSVC8. Although a conforming version was
1.57 +// also available via an overload, it is not reliably chosen. _snwprintf
1.58 +// behaves as a standards-confirming swprintf should, so force the use of
1.59 +// _snwprintf when using older CRTs.
1.60 +#if _MSC_VER < 1400 // MSVC 2005/8
1.61 +#define swprintf _snwprintf
1.62 +#else
1.63 +// For MSVC8 and newer, swprintf_s is the recommended method. Conveniently,
1.64 +// it takes the same argument list as swprintf.
1.65 +#define swprintf swprintf_s
1.66 +#endif // MSC_VER < 1400
1.67 +
1.68 +namespace google_breakpad {
1.69 +
1.70 +using std::string;
1.71 +using std::wstring;
1.72 +
1.73 +class WindowsStringUtils {
1.74 + public:
1.75 + // Roughly equivalent to MSVC8's wcscpy_s, except pre-MSVC8, this does
1.76 + // not fail if source is longer than destination_size. The destination
1.77 + // buffer is always 0-terminated.
1.78 + static void safe_wcscpy(wchar_t *destination, size_t destination_size,
1.79 + const wchar_t *source);
1.80 +
1.81 + // Roughly equivalent to MSVC8's wcsncpy_s, except that _TRUNCATE cannot
1.82 + // be passed directly, and pre-MSVC8, this will not fail if source or count
1.83 + // are longer than destination_size. The destination buffer is always
1.84 + // 0-terminated.
1.85 + static void safe_wcsncpy(wchar_t *destination, size_t destination_size,
1.86 + const wchar_t *source, size_t count);
1.87 +
1.88 + // Performs multi-byte to wide character conversion on C++ strings, using
1.89 + // mbstowcs_s (MSVC8) or mbstowcs (pre-MSVC8). Returns false on failure,
1.90 + // without setting wcs.
1.91 + static bool safe_mbstowcs(const string &mbs, wstring *wcs);
1.92 +
1.93 + // The inverse of safe_mbstowcs.
1.94 + static bool safe_wcstombs(const wstring &wcs, string *mbs);
1.95 +
1.96 + // Returns the base name of a file, e.g. strips off the path.
1.97 + static wstring GetBaseName(const wstring &filename);
1.98 +
1.99 + private:
1.100 + // Disallow instantiation and other object-based operations.
1.101 + WindowsStringUtils();
1.102 + WindowsStringUtils(const WindowsStringUtils&);
1.103 + ~WindowsStringUtils();
1.104 + void operator=(const WindowsStringUtils&);
1.105 +};
1.106 +
1.107 +// static
1.108 +inline void WindowsStringUtils::safe_wcscpy(wchar_t *destination,
1.109 + size_t destination_size,
1.110 + const wchar_t *source) {
1.111 +#if _MSC_VER >= 1400 // MSVC 2005/8
1.112 + wcscpy_s(destination, destination_size, source);
1.113 +#else // _MSC_VER >= 1400
1.114 + // Pre-MSVC 2005/8 doesn't have wcscpy_s. Simulate it with wcsncpy.
1.115 + // wcsncpy doesn't 0-terminate the destination buffer if the source string
1.116 + // is longer than size. Ensure that the destination is 0-terminated.
1.117 + wcsncpy(destination, source, destination_size);
1.118 + if (destination && destination_size)
1.119 + destination[destination_size - 1] = 0;
1.120 +#endif // _MSC_VER >= 1400
1.121 +}
1.122 +
1.123 +// static
1.124 +inline void WindowsStringUtils::safe_wcsncpy(wchar_t *destination,
1.125 + size_t destination_size,
1.126 + const wchar_t *source,
1.127 + size_t count) {
1.128 +#if _MSC_VER >= 1400 // MSVC 2005/8
1.129 + wcsncpy_s(destination, destination_size, source, count);
1.130 +#else // _MSC_VER >= 1400
1.131 + // Pre-MSVC 2005/8 doesn't have wcsncpy_s. Simulate it with wcsncpy.
1.132 + // wcsncpy doesn't 0-terminate the destination buffer if the source string
1.133 + // is longer than size. Ensure that the destination is 0-terminated.
1.134 + if (destination_size < count)
1.135 + count = destination_size;
1.136 +
1.137 + wcsncpy(destination, source, count);
1.138 + if (destination && count)
1.139 + destination[count - 1] = 0;
1.140 +#endif // _MSC_VER >= 1400
1.141 +}
1.142 +
1.143 +} // namespace google_breakpad
1.144 +
1.145 +#endif // COMMON_WINDOWS_STRING_UTILS_INL_H__
