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/*
* Copyright (C) 2010 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 THE COPYRIGHT
* OWNER 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 "config.h"
#include "MockSpellCheck.h"
#include "platform/WebString.h"
#include <wtf/ASCIICType.h>
#include <wtf/Assertions.h>
#include <wtf/text/WTFString.h>
using namespace WebKit;
MockSpellCheck::MockSpellCheck()
: m_initialized(false) { }
MockSpellCheck::~MockSpellCheck() { }
static bool isNotASCIIAlpha(UChar ch) { return !isASCIIAlpha(ch); }
bool MockSpellCheck::spellCheckWord(const WebString& text, int* misspelledOffset, int* misspelledLength)
{
ASSERT(misspelledOffset);
ASSERT(misspelledLength);
// Initialize this spellchecker.
initializeIfNeeded();
// Reset the result values as our spellchecker does.
*misspelledOffset = 0;
*misspelledLength = 0;
// Convert to a String because we store String instances in
// m_misspelledWords and WebString has no find().
WTF::String stringText(text.data(), text.length());
int skippedLength = 0;
while (!stringText.isEmpty()) {
// Extract the first possible English word from the given string.
// The given string may include non-ASCII characters or numbers. So, we
// should filter out such characters before start looking up our
// misspelled-word table.
// (This is a simple version of our SpellCheckWordIterator class.)
// If the given string doesn't include any ASCII characters, we can treat the
// string as valid one.
// Unfortunately, This implementation splits a contraction, i.e. "isn't" is
// split into two pieces "isn" and "t". This is OK because webkit tests
// don't have misspelled contractions.
int wordOffset = stringText.find(isASCIIAlpha);
if (wordOffset == -1)
return true;
int wordEnd = stringText.find(isNotASCIIAlpha, wordOffset);
int wordLength = wordEnd == -1 ? static_cast<int>(stringText.length()) - wordOffset : wordEnd - wordOffset;
// Look up our misspelled-word table to check if the extracted word is a
// known misspelled word, and return the offset and the length of the
// extracted word if this word is a known misspelled word.
// (See the comment in MockSpellCheck::initializeIfNeeded() why we use a
// misspelled-word table.)
WTF::String word = stringText.substring(wordOffset, wordLength);
if (m_misspelledWords.contains(word)) {
*misspelledOffset = wordOffset + skippedLength;
*misspelledLength = wordLength;
break;
}
ASSERT(0 < wordOffset + wordLength);
stringText = stringText.substring(wordOffset + wordLength);
skippedLength += wordOffset + wordLength;
}
return false;
}
void MockSpellCheck::fillSuggestionList(const WebString& word, Vector<WebString>* suggestions)
{
if (word == WebString::fromUTF8("wellcome"))
suggestions->append(WebString::fromUTF8("welcome"));
}
bool MockSpellCheck::initializeIfNeeded()
{
// Exit if we have already initialized this object.
if (m_initialized)
return false;
// Create a table that consists of misspelled words used in WebKit layout
// tests.
// Since WebKit layout tests don't have so many misspelled words as
// well-spelled words, it is easier to compare the given word with misspelled
// ones than to compare with well-spelled ones.
static const char* misspelledWords[] = {
// These words are known misspelled words in webkit tests.
// If there are other misspelled words in webkit tests, please add them in
// this array.
"foo",
"Foo",
"baz",
"fo",
"LibertyF",
"chello",
"xxxtestxxx",
"XXxxx",
"Textx",
"blockquoted",
"asd",
"Lorem",
"Nunc",
"Curabitur",
"eu",
"adlj",
"adaasj",
"sdklj",
"jlkds",
"jsaada",
"jlda",
"zz",
"contentEditable",
// The following words are used by unit tests.
"ifmmp",
"qwertyuiopasd",
"qwertyuiopasdf",
"wellcome"
};
m_misspelledWords.clear();
for (size_t i = 0; i < arraysize(misspelledWords); ++i)
m_misspelledWords.add(WTF::String::fromUTF8(misspelledWords[i]), false);
// Mark as initialized to prevent this object from being initialized twice
// or more.
m_initialized = true;
// Since this MockSpellCheck class doesn't download dictionaries, this
// function always returns false.
return false;
}
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