Airbag client libraries should compile under MSVC .NET 2003/7.1 (#64).

r=bryner

http://groups.google.com/group/airbag-dev/browse_thread/thread/b838faeb50f71818


git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@64 4c0a9323-5329-0410-9bdc-e9ce6186880e

src/common/windows/string_utils-inl.h

@@ -0,0 +1,132 @@
+// 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>
+
+// 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
+
+namespace google_airbag {
+
+class WindowsStringUtils {
+ public:
+  // Equivalent to MSVC8's swprintf, which always 0-terminates buffer.
+  static void safe_swprintf(wchar_t *buffer, size_t count,
+                            const wchar_t *format, ...);
+
+  // 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);
+
+ private:
+  // Disallow instantiation and other object-based operations.
+  WindowsStringUtils();
+  WindowsStringUtils(const WindowsStringUtils&);
+  ~WindowsStringUtils();
+  void operator=(const WindowsStringUtils&);
+};
+
+// static
+inline void WindowsStringUtils::safe_swprintf(wchar_t *buffer, size_t count,
+                                              const wchar_t *format, ...) {
+  va_list args;
+  va_start(args, format);
+  vswprintf(buffer, count, format, args);
+
+#if _MSC_VER < 1400  // MSVC 2005/8
+  // Pre-MSVC 2005/8 doesn't 0-terminate the buffer if the formatted string
+  // is larger than the buffer.  Ensure that the string is 0-terminated.
+  if (buffer && count)
+    buffer[count - 1] = 0;
+#endif  // _MSC_VER < 1400
+}
+
+// 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_airbag
+
+#endif  // COMMON_WINDOWS_STRING_UTILS_INL_H__