1 files changed, 160 insertions, 0 deletions
diff --git a/extensions/spellcheck/hunspell/glue/hunspell_csutil.cxx b/extensions/spellcheck/hunspell/glue/hunspell_csutil.cxx
new file mode 100644
index 0000000000..0f5565a12c
--- /dev/null
+++ b/extensions/spellcheck/hunspell/glue/hunspell_csutil.cxx
@@ -0,0 +1,160 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * Copyright (C) 2002-2017 Németh László
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (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.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * Hunspell is based on MySpell which is Copyright (C) 2002 Kevin Hendricks.
+ *
+ * Contributor(s): David Einstein, Davide Prina, Giuseppe Modugno,
+ * Gianluca Turconi, Simon Brouwer, Noll János, Bíró Árpád,
+ * Goldman Eleonóra, Sarlós Tamás, Bencsáth Boldizsár, Halácsy Péter,
+ * Dvornik László, Gefferth András, Nagy Viktor, Varga Dániel, Chris Halls,
+ * Rene Engelhard, Bram Moolenaar, Dafydd Jones, Harri Pitkänen
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+/*
+ * Copyright 2002 Kevin B. Hendricks, Stratford, Ontario, Canada
+ * And Contributors.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. All modifications to the source code must be clearly marked as
+ *    such.  Binary redistributions based on modified source code
+ *    must be clearly marked as modified versions in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY KEVIN B. HENDRICKS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
+ * KEVIN B. HENDRICKS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include "hunspell_csutil.hxx"
+#include "mozilla/Encoding.h"
+#include "mozilla/Span.h"
+#include "nsUnicharUtils.h"
+
+/* This is a copy of get_current_cs from the hunspell csutil.cxx file.
+ */
+struct cs_info* hunspell_get_current_cs(const std::string& es) {
+  struct cs_info* ccs = new cs_info[256];
+  // Initialze the array with dummy data so that we wouldn't need
+  // to return null in case of failures.
+  for (int i = 0; i <= 0xff; ++i) {
+    ccs[i].ccase = false;
+    ccs[i].clower = i;
+    ccs[i].cupper = i;
+  }
+
+  auto encoding = mozilla::Encoding::ForLabelNoReplacement(es);
+  if (!encoding) {
+    return ccs;
+  }
+  auto encoder = encoding->NewEncoder();
+  auto decoder = encoding->NewDecoderWithoutBOMHandling();
+
+  for (unsigned int i = 0; i <= 0xff; ++i) {
+    bool success = false;
+    // We want to find the upper/lowercase equivalents of each byte
+    // in this 1-byte character encoding.  Call our encoding/decoding
+    // APIs separately for each byte since they may reject some of the
+    // bytes, and we want to handle errors separately for each byte.
+    uint8_t lower, upper;
+    do {
+      if (i == 0) break;
+      uint8_t source = uint8_t(i);
+      char16_t uni[2];
+      char16_t uniCased;
+      uint8_t destination[4];
+      auto src1 = mozilla::Span(&source, 1);
+      auto dst1 = mozilla::Span(uni);
+      auto src2 = mozilla::Span(&uniCased, 1);
+      auto dst2 = mozilla::Span(destination);
+
+      uint32_t result;
+      size_t read;
+      size_t written;
+      std::tie(result, read, written) =
+          decoder->DecodeToUTF16WithoutReplacement(src1, dst1, true);
+      if (result != mozilla::kInputEmpty || read != 1 || written != 1) {
+        break;
+      }
+
+      uniCased = ToLowerCase(uni[0]);
+      std::tie(result, read, written) =
+          encoder->EncodeFromUTF16WithoutReplacement(src2, dst2, true);
+      if (result != mozilla::kInputEmpty || read != 1 || written != 1) {
+        break;
+      }
+      lower = destination[0];
+
+      uniCased = ToUpperCase(uni[0]);
+      std::tie(result, read, written) =
+          encoder->EncodeFromUTF16WithoutReplacement(src2, dst2, true);
+      if (result != mozilla::kInputEmpty || read != 1 || written != 1) {
+        break;
+      }
+      upper = destination[0];
+
+      success = true;
+    } while (0);
+
+    encoding->NewEncoderInto(*encoder);
+    encoding->NewDecoderWithoutBOMHandlingInto(*decoder);
+
+    if (success) {
+      ccs[i].cupper = upper;
+      ccs[i].clower = lower;
+    } else {
+      ccs[i].cupper = i;
+      ccs[i].clower = i;
+    }
+
+    if (ccs[i].clower != (unsigned char)i)
+      ccs[i].ccase = true;
+    else
+      ccs[i].ccase = false;
+  }
+
+  return ccs;
+}