From c18d9955df45be20537cc221dabebdae7d4fe744 Mon Sep 17 00:00:00 2001
From: wolfbeast <mcwerewolf@gmail.com>
Date: Fri, 4 May 2018 20:36:02 +0200
Subject: Issue #325 Part 13: Remove Mozilla implementation of the bidi engine
 completely and use ICU.

---
 layout/base/nsBidi.cpp | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 layout/base/nsBidi.cpp

(limited to 'layout/base/nsBidi.cpp')

diff --git a/layout/base/nsBidi.cpp b/layout/base/nsBidi.cpp
new file mode 100644
index 000000000..1d6975869
--- /dev/null
+++ b/layout/base/nsBidi.cpp
@@ -0,0 +1,68 @@
+/* -*- 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 "nsBidi.h"
+#include "ICUUtils.h"
+
+nsBidi::nsBidi()
+{
+  mBiDi = ubidi_open();
+}
+
+nsBidi::~nsBidi()
+{
+  ubidi_close(mBiDi);
+}
+
+nsresult nsBidi::SetPara(const char16_t *aText, int32_t aLength,
+                         nsBidiLevel aParaLevel)
+{
+  UErrorCode error = U_ZERO_ERROR;
+  ubidi_setPara(mBiDi, reinterpret_cast<const UChar*>(aText), aLength,
+                aParaLevel, nullptr, &error);
+  return ICUUtils::UErrorToNsResult(error);
+}
+
+nsresult nsBidi::GetDirection(nsBidiDirection* aDirection)
+{
+  *aDirection = nsBidiDirection(ubidi_getDirection(mBiDi));
+  return NS_OK;
+}
+
+nsresult nsBidi::GetParaLevel(nsBidiLevel* aParaLevel)
+{
+  *aParaLevel = ubidi_getParaLevel(mBiDi);
+  return NS_OK;
+}
+
+nsresult nsBidi::GetLogicalRun(int32_t aLogicalStart, int32_t* aLogicalLimit,
+                               nsBidiLevel* aLevel)
+{
+  ubidi_getLogicalRun(mBiDi, aLogicalStart, aLogicalLimit, aLevel);
+  return NS_OK;
+}
+
+nsresult nsBidi::CountRuns(int32_t* aRunCount)
+{
+  UErrorCode errorCode = U_ZERO_ERROR;
+  *aRunCount = ubidi_countRuns(mBiDi, &errorCode);
+  return ICUUtils::UErrorToNsResult(errorCode);
+}
+
+nsresult nsBidi::GetVisualRun(int32_t aRunIndex, int32_t* aLogicalStart,
+                              int32_t* aLength, nsBidiDirection* aDirection)
+{
+  *aDirection = nsBidiDirection(ubidi_getVisualRun(mBiDi, aRunIndex,
+                                                   aLogicalStart, aLength));
+  return NS_OK;
+}
+
+nsresult nsBidi::ReorderVisual(const nsBidiLevel* aLevels, int32_t aLength,
+                               int32_t* aIndexMap)
+{
+  ubidi_reorderVisual(aLevels, aLength, aIndexMap);
+  return NS_OK;
+}
-- 
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