Revert "Revert "adb/base: fix adb push of Unicode filenames on Win32""
This reverts commit cc8cd59456ca485a51cd6fd388c8bcb1af4a8f9b.
With the dependency on libcutils (for gettid for non-bionic) removed,
this no longer breaks the build.
Change-Id: I645bd6876e2502ddc1535b69af1e645c0df9d178
diff --git a/base/utf8.cpp b/base/utf8.cpp
new file mode 100755
index 0000000..62a118f
--- /dev/null
+++ b/base/utf8.cpp
@@ -0,0 +1,170 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <windows.h>
+
+#include "base/utf8.h"
+
+#include <fcntl.h>
+
+#include <string>
+
+#include "base/logging.h"
+
+namespace android {
+namespace base {
+
+bool WideToUTF8(const wchar_t* utf16, const size_t size, std::string* utf8) {
+ utf8->clear();
+
+ if (size == 0) {
+ return true;
+ }
+
+ // TODO: Consider using std::wstring_convert once libcxx is supported on
+ // Windows.
+
+ // Only Vista or later has this flag that causes WideCharToMultiByte() to
+ // return an error on invalid characters.
+ const DWORD flags =
+#if (WINVER >= 0x0600)
+ WC_ERR_INVALID_CHARS;
+#else
+ 0;
+#endif
+
+ const int chars_required = WideCharToMultiByte(CP_UTF8, flags, utf16, size,
+ NULL, 0, NULL, NULL);
+ if (chars_required <= 0) {
+ return false;
+ }
+
+ // This could potentially throw a std::bad_alloc exception.
+ utf8->resize(chars_required);
+
+ const int result = WideCharToMultiByte(CP_UTF8, flags, utf16, size,
+ &(*utf8)[0], chars_required, NULL,
+ NULL);
+ if (result != chars_required) {
+ CHECK_LE(result, chars_required) << "WideCharToMultiByte wrote " << result
+ << " chars to buffer of " << chars_required << " chars";
+ utf8->clear();
+ return false;
+ }
+
+ return true;
+}
+
+bool WideToUTF8(const wchar_t* utf16, std::string* utf8) {
+ // Compute string length of NULL-terminated string with wcslen().
+ return WideToUTF8(utf16, wcslen(utf16), utf8);
+}
+
+bool WideToUTF8(const std::wstring& utf16, std::string* utf8) {
+ // Use the stored length of the string which allows embedded NULL characters
+ // to be converted.
+ return WideToUTF8(utf16.c_str(), utf16.length(), utf8);
+}
+
+// Internal helper function that takes MultiByteToWideChar() flags.
+static bool _UTF8ToWideWithFlags(const char* utf8, const size_t size,
+ std::wstring* utf16, const DWORD flags) {
+ utf16->clear();
+
+ if (size == 0) {
+ return true;
+ }
+
+ // TODO: Consider using std::wstring_convert once libcxx is supported on
+ // Windows.
+ const int chars_required = MultiByteToWideChar(CP_UTF8, flags, utf8, size,
+ NULL, 0);
+ if (chars_required <= 0) {
+ return false;
+ }
+
+ // This could potentially throw a std::bad_alloc exception.
+ utf16->resize(chars_required);
+
+ const int result = MultiByteToWideChar(CP_UTF8, flags, utf8, size,
+ &(*utf16)[0], chars_required);
+ if (result != chars_required) {
+ CHECK_LE(result, chars_required) << "MultiByteToWideChar wrote " << result
+ << " chars to buffer of " << chars_required << " chars";
+ utf16->clear();
+ return false;
+ }
+
+ return true;
+}
+
+bool UTF8ToWide(const char* utf8, const size_t size, std::wstring* utf16) {
+ // If strictly interpreting as UTF-8 succeeds, return success.
+ if (_UTF8ToWideWithFlags(utf8, size, utf16, MB_ERR_INVALID_CHARS)) {
+ return true;
+ }
+
+ // Fallback to non-strict interpretation, allowing invalid characters and
+ // converting as best as possible, and return false to signify a problem.
+ (void)_UTF8ToWideWithFlags(utf8, size, utf16, 0);
+ return false;
+}
+
+bool UTF8ToWide(const char* utf8, std::wstring* utf16) {
+ // Compute string length of NULL-terminated string with strlen().
+ return UTF8ToWide(utf8, strlen(utf8), utf16);
+}
+
+bool UTF8ToWide(const std::string& utf8, std::wstring* utf16) {
+ // Use the stored length of the string which allows embedded NULL characters
+ // to be converted.
+ return UTF8ToWide(utf8.c_str(), utf8.length(), utf16);
+}
+
+// Versions of standard library APIs that support UTF-8 strings.
+namespace utf8 {
+
+int open(const char* name, int flags, ...) {
+ std::wstring name_utf16;
+ if (!UTF8ToWide(name, &name_utf16)) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ int mode = 0;
+ if ((flags & O_CREAT) != 0) {
+ va_list args;
+ va_start(args, flags);
+ mode = va_arg(args, int);
+ va_end(args);
+ }
+
+ return _wopen(name_utf16.c_str(), flags, mode);
+}
+
+int unlink(const char* name) {
+ std::wstring name_utf16;
+ if (!UTF8ToWide(name, &name_utf16)) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ return _wunlink(name_utf16.c_str());
+}
+
+} // namespace utf8
+} // namespace base
+} // namespace android