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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "webkit/mocks/mock_webhyphenator.h"
#include "base/logging.h"
#include "base/memory/scoped_handle.h"
#include "base/memory/scoped_ptr.h"
#include "base/strings/string_util.h"
#include "third_party/hyphen/hyphen.h"
namespace webkit_glue {
MockWebHyphenator::MockWebHyphenator()
: hyphen_dictionary_(NULL) {
}
MockWebHyphenator::~MockWebHyphenator() {
if (hyphen_dictionary_)
hnj_hyphen_free(hyphen_dictionary_);
}
void MockWebHyphenator::LoadDictionary(base::PlatformFile dict_file) {
CHECK(!hyphen_dictionary_);
// Initialize the hyphen library with a sample dictionary. To avoid test
// flakiness, this code synchronously loads the dictionary.
if (dict_file == base::kInvalidPlatformFileValue) {
NOTREACHED();
return;
}
ScopedStdioHandle dict_handle(base::FdopenPlatformFile(dict_file, "r"));
if (!dict_handle.get()) {
NOTREACHED();
base::ClosePlatformFile(dict_file);
return;
}
hyphen_dictionary_ = hnj_hyphen_load_file(dict_handle.get());
DCHECK(hyphen_dictionary_);
}
bool MockWebHyphenator::canHyphenate(const WebKit::WebString& locale) {
return locale.isEmpty() || locale.equals("en") || locale.equals("en_US") ||
locale.equals("en_GB");
}
size_t MockWebHyphenator::computeLastHyphenLocation(
const char16* characters,
size_t length,
size_t before_index,
const WebKit::WebString& locale) {
DCHECK(locale.isEmpty() || locale.equals("en") || locale.equals("en_US") ||
locale.equals("en_GB"));
if (!hyphen_dictionary_)
return 0;
// Retrieve the positions where we can insert hyphens. This function assumes
// the input word is an English word so it can use the position returned by
// the hyphen library without conversion.
base::string16 word_utf16(characters, length);
if (!IsStringASCII(word_utf16))
return 0;
std::string word = StringToLowerASCII(UTF16ToASCII(word_utf16));
scoped_ptr<char[]> hyphens(new char[word.length() + 5]);
char** rep = NULL;
int* pos = NULL;
int* cut = NULL;
int error = hnj_hyphen_hyphenate2(hyphen_dictionary_,
word.data(),
static_cast<int>(word.length()),
hyphens.get(),
NULL,
&rep,
&pos,
&cut);
if (error)
return 0;
// Release all resources allocated by the hyphen library now because they are
// not used when hyphenating English words.
if (rep) {
for (size_t i = 0; i < word.length(); ++i) {
if (rep[i])
free(rep[i]);
}
free(rep);
}
if (pos)
free(pos);
if (cut)
free(cut);
// Retrieve the last position where we can insert a hyphen before the given
// index.
if (before_index >= 2) {
for (size_t index = before_index - 2; index > 0; --index) {
if (hyphens[index] & 1)
return index + 1;
}
}
return 0;
}
} // namespace webkit_glue
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