1 files changed, 366 insertions, 0 deletions
diff --git a/xpcom/build/nsXPCOMStrings.cpp b/xpcom/build/nsXPCOMStrings.cpp
new file mode 100644
index 000000000..617edbab2
--- /dev/null
+++ b/xpcom/build/nsXPCOMStrings.cpp
@@ -0,0 +1,366 @@
+/* -*- 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/. */
+
+#include "nsString.h"
+#include "nsCharTraits.h"
+
+#include "nsXPCOMStrings.h"
+#include "nsNativeCharsetUtils.h"
+
+/* ------------------------------------------------------------------------- */
+
+XPCOM_API(nsresult)
+NS_StringContainerInit(nsStringContainer& aContainer)
+{
+  NS_ASSERTION(sizeof(nsStringContainer_base) >= sizeof(nsString),
+               "nsStringContainer is not large enough");
+
+  // use placement new to avoid heap allocating nsString object
+  new (&aContainer) nsString();
+
+  return NS_OK;
+}
+
+XPCOM_API(nsresult)
+NS_StringContainerInit2(nsStringContainer& aContainer,
+                        const char16_t* aData,
+                        uint32_t aDataLength,
+                        uint32_t aFlags)
+{
+  NS_ASSERTION(sizeof(nsStringContainer_base) >= sizeof(nsString),
+               "nsStringContainer is not large enough");
+
+  if (!aData) {
+    new (&aContainer) nsString();
+  } else {
+    if (aDataLength == UINT32_MAX) {
+      if (NS_WARN_IF(aFlags & NS_STRING_CONTAINER_INIT_SUBSTRING)) {
+        return NS_ERROR_INVALID_ARG;
+      }
+      aDataLength = nsCharTraits<char16_t>::length(aData);
+    }
+
+    if (aFlags & (NS_STRING_CONTAINER_INIT_DEPEND |
+                  NS_STRING_CONTAINER_INIT_ADOPT)) {
+      uint32_t flags;
+      if (aFlags & NS_STRING_CONTAINER_INIT_SUBSTRING) {
+        flags = nsSubstring::F_NONE;
+      } else {
+        flags = nsSubstring::F_TERMINATED;
+      }
+
+      if (aFlags & NS_STRING_CONTAINER_INIT_ADOPT) {
+        flags |= nsSubstring::F_OWNED;
+      }
+
+      new (&aContainer) nsSubstring(const_cast<char16_t*>(aData),
+                                    aDataLength, flags);
+    } else {
+      new (&aContainer) nsString(aData, aDataLength);
+    }
+  }
+
+  return NS_OK;
+}
+
+XPCOM_API(void)
+NS_StringContainerFinish(nsStringContainer& aContainer)
+{
+  // call the nsString dtor
+  reinterpret_cast<nsString*>(&aContainer)->~nsString();
+}
+
+/* ------------------------------------------------------------------------- */
+
+XPCOM_API(uint32_t)
+NS_StringGetData(const nsAString& aStr, const char16_t** aData,
+                 bool* aTerminated)
+{
+  if (aTerminated) {
+    *aTerminated = aStr.IsTerminated();
+  }
+
+  *aData = aStr.BeginReading();
+  return aStr.Length();
+}
+
+XPCOM_API(uint32_t)
+NS_StringGetMutableData(nsAString& aStr, uint32_t aDataLength,
+                        char16_t** aData)
+{
+  if (aDataLength != UINT32_MAX) {
+    aStr.SetLength(aDataLength);
+    if (aStr.Length() != aDataLength) {
+      *aData = nullptr;
+      return 0;
+    }
+  }
+
+  *aData = aStr.BeginWriting();
+  return aStr.Length();
+}
+
+XPCOM_API(char16_t*)
+NS_StringCloneData(const nsAString& aStr)
+{
+  return ToNewUnicode(aStr);
+}
+
+XPCOM_API(nsresult)
+NS_StringSetData(nsAString& aStr, const char16_t* aData, uint32_t aDataLength)
+{
+  aStr.Assign(aData, aDataLength);
+  return NS_OK; // XXX report errors
+}
+
+XPCOM_API(nsresult)
+NS_StringSetDataRange(nsAString& aStr,
+                      uint32_t aCutOffset, uint32_t aCutLength,
+                      const char16_t* aData, uint32_t aDataLength)
+{
+  if (aCutOffset == UINT32_MAX) {
+    // append case
+    if (aData) {
+      aStr.Append(aData, aDataLength);
+    }
+    return NS_OK; // XXX report errors
+  }
+
+  if (aCutLength == UINT32_MAX) {
+    aCutLength = aStr.Length() - aCutOffset;
+  }
+
+  if (aData) {
+    if (aDataLength == UINT32_MAX) {
+      aStr.Replace(aCutOffset, aCutLength, nsDependentString(aData));
+    } else {
+      aStr.Replace(aCutOffset, aCutLength, Substring(aData, aDataLength));
+    }
+  } else {
+    aStr.Cut(aCutOffset, aCutLength);
+  }
+
+  return NS_OK; // XXX report errors
+}
+
+XPCOM_API(nsresult)
+NS_StringCopy(nsAString& aDest, const nsAString& aSrc)
+{
+  aDest.Assign(aSrc);
+  return NS_OK; // XXX report errors
+}
+
+XPCOM_API(void)
+NS_StringSetIsVoid(nsAString& aStr, const bool aIsVoid)
+{
+  aStr.SetIsVoid(aIsVoid);
+}
+
+XPCOM_API(bool)
+NS_StringGetIsVoid(const nsAString& aStr)
+{
+  return aStr.IsVoid();
+}
+
+/* ------------------------------------------------------------------------- */
+
+XPCOM_API(nsresult)
+NS_CStringContainerInit(nsCStringContainer& aContainer)
+{
+  NS_ASSERTION(sizeof(nsStringContainer_base) >= sizeof(nsCString),
+               "nsCStringContainer is not large enough");
+
+  // use placement new to avoid heap allocating nsCString object
+  new (&aContainer) nsCString();
+
+  return NS_OK;
+}
+
+XPCOM_API(nsresult)
+NS_CStringContainerInit2(nsCStringContainer& aContainer,
+                         const char* aData,
+                         uint32_t aDataLength,
+                         uint32_t aFlags)
+{
+  NS_ASSERTION(sizeof(nsStringContainer_base) >= sizeof(nsCString),
+               "nsStringContainer is not large enough");
+
+  if (!aData) {
+    new (&aContainer) nsCString();
+  } else {
+    if (aDataLength == UINT32_MAX) {
+      if (NS_WARN_IF(aFlags & NS_CSTRING_CONTAINER_INIT_SUBSTRING)) {
+        return NS_ERROR_INVALID_ARG;
+      }
+      aDataLength = nsCharTraits<char>::length(aData);
+    }
+
+    if (aFlags & (NS_CSTRING_CONTAINER_INIT_DEPEND |
+                  NS_CSTRING_CONTAINER_INIT_ADOPT)) {
+      uint32_t flags;
+      if (aFlags & NS_CSTRING_CONTAINER_INIT_SUBSTRING) {
+        flags = nsCSubstring::F_NONE;
+      } else {
+        flags = nsCSubstring::F_TERMINATED;
+      }
+
+      if (aFlags & NS_CSTRING_CONTAINER_INIT_ADOPT) {
+        flags |= nsCSubstring::F_OWNED;
+      }
+
+      new (&aContainer) nsCSubstring(const_cast<char*>(aData),
+                                     aDataLength, flags);
+    } else {
+      new (&aContainer) nsCString(aData, aDataLength);
+    }
+  }
+
+  return NS_OK;
+}
+
+XPCOM_API(void)
+NS_CStringContainerFinish(nsCStringContainer& aContainer)
+{
+  // call the nsCString dtor
+  reinterpret_cast<nsCString*>(&aContainer)->~nsCString();
+}
+
+/* ------------------------------------------------------------------------- */
+
+XPCOM_API(uint32_t)
+NS_CStringGetData(const nsACString& aStr, const char** aData,
+                  bool* aTerminated)
+{
+  if (aTerminated) {
+    *aTerminated = aStr.IsTerminated();
+  }
+
+  *aData = aStr.BeginReading();
+  return aStr.Length();
+}
+
+XPCOM_API(uint32_t)
+NS_CStringGetMutableData(nsACString& aStr, uint32_t aDataLength, char** aData)
+{
+  if (aDataLength != UINT32_MAX) {
+    aStr.SetLength(aDataLength);
+    if (aStr.Length() != aDataLength) {
+      *aData = nullptr;
+      return 0;
+    }
+  }
+
+  *aData = aStr.BeginWriting();
+  return aStr.Length();
+}
+
+XPCOM_API(char*)
+NS_CStringCloneData(const nsACString& aStr)
+{
+  return ToNewCString(aStr);
+}
+
+XPCOM_API(nsresult)
+NS_CStringSetData(nsACString& aStr, const char* aData, uint32_t aDataLength)
+{
+  aStr.Assign(aData, aDataLength);
+  return NS_OK; // XXX report errors
+}
+
+XPCOM_API(nsresult)
+NS_CStringSetDataRange(nsACString& aStr,
+                       uint32_t aCutOffset, uint32_t aCutLength,
+                       const char* aData, uint32_t aDataLength)
+{
+  if (aCutOffset == UINT32_MAX) {
+    // append case
+    if (aData) {
+      aStr.Append(aData, aDataLength);
+    }
+    return NS_OK; // XXX report errors
+  }
+
+  if (aCutLength == UINT32_MAX) {
+    aCutLength = aStr.Length() - aCutOffset;
+  }
+
+  if (aData) {
+    if (aDataLength == UINT32_MAX) {
+      aStr.Replace(aCutOffset, aCutLength, nsDependentCString(aData));
+    } else {
+      aStr.Replace(aCutOffset, aCutLength, Substring(aData, aDataLength));
+    }
+  } else {
+    aStr.Cut(aCutOffset, aCutLength);
+  }
+
+  return NS_OK; // XXX report errors
+}
+
+XPCOM_API(nsresult)
+NS_CStringCopy(nsACString& aDest, const nsACString& aSrc)
+{
+  aDest.Assign(aSrc);
+  return NS_OK; // XXX report errors
+}
+
+XPCOM_API(void)
+NS_CStringSetIsVoid(nsACString& aStr, const bool aIsVoid)
+{
+  aStr.SetIsVoid(aIsVoid);
+}
+
+XPCOM_API(bool)
+NS_CStringGetIsVoid(const nsACString& aStr)
+{
+  return aStr.IsVoid();
+}
+
+/* ------------------------------------------------------------------------- */
+
+XPCOM_API(nsresult)
+NS_CStringToUTF16(const nsACString& aSrc,
+                  nsCStringEncoding aSrcEncoding,
+                  nsAString& aDest)
+{
+  switch (aSrcEncoding) {
+    case NS_CSTRING_ENCODING_ASCII:
+      CopyASCIItoUTF16(aSrc, aDest);
+      break;
+    case NS_CSTRING_ENCODING_UTF8:
+      CopyUTF8toUTF16(aSrc, aDest);
+      break;
+    case NS_CSTRING_ENCODING_NATIVE_FILESYSTEM:
+      NS_CopyNativeToUnicode(aSrc, aDest);
+      break;
+    default:
+      return NS_ERROR_NOT_IMPLEMENTED;
+  }
+
+  return NS_OK; // XXX report errors
+}
+
+XPCOM_API(nsresult)
+NS_UTF16ToCString(const nsAString& aSrc,
+                  nsCStringEncoding aDestEncoding,
+                  nsACString& aDest)
+{
+  switch (aDestEncoding) {
+    case NS_CSTRING_ENCODING_ASCII:
+      LossyCopyUTF16toASCII(aSrc, aDest);
+      break;
+    case NS_CSTRING_ENCODING_UTF8:
+      CopyUTF16toUTF8(aSrc, aDest);
+      break;
+    case NS_CSTRING_ENCODING_NATIVE_FILESYSTEM:
+      NS_CopyUnicodeToNative(aSrc, aDest);
+      break;
+    default:
+      return NS_ERROR_NOT_IMPLEMENTED;
+  }
+
+  return NS_OK; // XXX report errors
+}