1 files changed, 98 insertions, 0 deletions
diff --git a/xpcom/io/nsNativeCharsetUtils.cpp b/xpcom/io/nsNativeCharsetUtils.cpp
new file mode 100644
index 0000000000..847ae3666c
--- /dev/null
+++ b/xpcom/io/nsNativeCharsetUtils.cpp
@@ -0,0 +1,98 @@
+/* -*- 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/. */
+
+//-----------------------------------------------------------------------------
+// Non-Windows
+//-----------------------------------------------------------------------------
+#ifndef XP_WIN
+
+#  include "nsAString.h"
+#  include "nsReadableUtils.h"
+#  include "nsString.h"
+
+nsresult NS_CopyNativeToUnicode(const nsACString& aInput, nsAString& aOutput) {
+  CopyUTF8toUTF16(aInput, aOutput);
+  return NS_OK;
+}
+
+nsresult NS_CopyUnicodeToNative(const nsAString& aInput, nsACString& aOutput) {
+  CopyUTF16toUTF8(aInput, aOutput);
+  return NS_OK;
+}
+
+//-----------------------------------------------------------------------------
+// XP_WIN
+//-----------------------------------------------------------------------------
+#else
+
+#  include <windows.h>
+#  include "nsString.h"
+#  include "nsAString.h"
+#  include "nsReadableUtils.h"
+
+using namespace mozilla;
+
+nsresult NS_CopyNativeToUnicode(const nsACString& aInput, nsAString& aOutput) {
+  uint32_t inputLen = aInput.Length();
+
+  nsACString::const_iterator iter;
+  aInput.BeginReading(iter);
+
+  const char* buf = iter.get();
+
+  // determine length of result
+  uint32_t resultLen = 0;
+  int n = ::MultiByteToWideChar(CP_ACP, 0, buf, inputLen, nullptr, 0);
+  if (n > 0) {
+    resultLen += n;
+  }
+
+  // allocate sufficient space
+  if (!aOutput.SetLength(resultLen, fallible)) {
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+  if (resultLen > 0) {
+    char16ptr_t result = aOutput.BeginWriting();
+    ::MultiByteToWideChar(CP_ACP, 0, buf, inputLen, result, resultLen);
+  }
+  return NS_OK;
+}
+
+nsresult NS_CopyUnicodeToNative(const nsAString& aInput, nsACString& aOutput) {
+  uint32_t inputLen = aInput.Length();
+
+  nsAString::const_iterator iter;
+  aInput.BeginReading(iter);
+
+  char16ptr_t buf = iter.get();
+
+  // determine length of result
+  uint32_t resultLen = 0;
+
+  int n = ::WideCharToMultiByte(CP_ACP, 0, buf, inputLen, nullptr, 0, nullptr,
+                                nullptr);
+  if (n > 0) {
+    resultLen += n;
+  }
+
+  // allocate sufficient space
+  if (!aOutput.SetLength(resultLen, fallible)) {
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+  if (resultLen > 0) {
+    char* result = aOutput.BeginWriting();
+
+    // default "defaultChar" is '?', which is an illegal character on windows
+    // file system.  That will cause file uncreatable. Change it to '_'
+    const char defaultChar = '_';
+
+    ::WideCharToMultiByte(CP_ACP, 0, buf, inputLen, result, resultLen,
+                          &defaultChar, nullptr);
+  }
+  return NS_OK;
+}
+
+#endif