Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 60 insertions, 0 deletions

diff --git a/intl/lwbrk/nsUniscribeBreaker.cpp b/intl/lwbrk/nsUniscribeBreaker.cpp
new file mode 100644
index 0000000000..503b756b61
--- /dev/null
+++ b/intl/lwbrk/nsUniscribeBreaker.cpp
@@ -0,0 +1,60 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 "nsComplexBreaker.h"
+
+#include <windows.h>
+
+#include <usp10.h>
+
+#include "nsUTF8Utils.h"
+#include "nsString.h"
+#include "nsTArray.h"
+
+void NS_GetComplexLineBreaks(const char16_t* aText, uint32_t aLength,
+                             uint8_t* aBreakBefore) {
+  NS_ASSERTION(aText, "aText shouldn't be null");
+
+  int outItems = 0;
+  HRESULT result;
+  AutoTArray<SCRIPT_ITEM, 64> items;
+  char16ptr_t text = aText;
+
+  memset(aBreakBefore, false, aLength);
+
+  items.AppendElements(64);
+
+  do {
+    result = ScriptItemize(text, aLength, items.Length(), nullptr, nullptr,
+                           items.Elements(), &outItems);
+
+    if (result == E_OUTOFMEMORY) {
+      // XXX(Bug 1631371) Check if this should use a fallible operation as it
+      // pretended earlier.
+      items.AppendElements(items.Length());
+    }
+  } while (result == E_OUTOFMEMORY);
+
+  for (int iItem = 0; iItem < outItems; ++iItem) {
+    uint32_t endOffset =
+        (iItem + 1 == outItems ? aLength : items[iItem + 1].iCharPos);
+    uint32_t startOffset = items[iItem].iCharPos;
+    AutoTArray<SCRIPT_LOGATTR, 64> sla;
+
+    // XXX(Bug 1631371) Check if this should use a fallible operation as it
+    // pretended earlier.
+    sla.AppendElements(endOffset - startOffset);
+
+    if (ScriptBreak(text + startOffset, endOffset - startOffset,
+                    &items[iItem].a, sla.Elements()) < 0)
+      return;
+
+    // We don't want to set a potential break position at the start of text;
+    // that's the responsibility of a higher level.
+    for (uint32_t j = startOffset ? 0 : 1; j + startOffset < endOffset; ++j) {
+      aBreakBefore[j + startOffset] = sla[j].fSoftBreak;
+    }
+  }
+}