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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2012 Dmitry Savchenko.
** Copyright (c) 2010 Vasiliy Sorokin.
**
** Contact: http://www.qt-project.org/
**
**
** GNU Lesser General Public License Usage
**
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this file.
** Please review the following information to ensure the GNU Lesser General
** Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**************************************************************************/
#include "lineparser.h"
#include <QMap>
namespace Todo {
namespace Internal {
LineParser::LineParser(const KeywordList &keywordList)
{
setKeywordList(keywordList);
}
void LineParser::setKeywordList(const KeywordList &keywordList)
{
m_keywords = keywordList;
}
QList<TodoItem> LineParser::parse(const QString &line)
{
QMap<int, int> entryCandidates = findKeywordEntryCandidates(line);
QList<KeywordEntry> entries = keywordEntriesFromCandidates(entryCandidates, line);
return todoItemsFromKeywordEntries(entries);
}
bool LineParser::isKeywordSeparator(const QChar &ch)
{
return ch.isSpace()
|| (ch == QLatin1Char(':'))
|| (ch == QLatin1Char('/'))
|| (ch == QLatin1Char('*'));
}
LineParser::KeywordEntryCandidates LineParser::findKeywordEntryCandidates(const QString &line)
{
KeywordEntryCandidates entryCandidates;
for (int i = 0; i < m_keywords.count(); ++i) {
int searchFrom = -1;
forever {
const int index = line.lastIndexOf(m_keywords.at(i).name, searchFrom);
if (index == -1)
break; // 'forever' loop exit condition
searchFrom = index - line.length() - 1;
if (isKeywordAt(index, line, m_keywords.at(i).name))
entryCandidates.insert(index, i);
}
}
return entryCandidates;
}
bool LineParser::isKeywordAt(int index, const QString &line, const QString &keyword)
{
if (!isFirstCharOfTheWord(index, line))
return false;
if (!isLastCharOfTheWord(index + keyword.length() - 1, line))
return false;
return true;
}
bool LineParser::isFirstCharOfTheWord(int index, const QString &line)
{
return (index == 0) || isKeywordSeparator(line.at(index - 1));
}
bool LineParser::isLastCharOfTheWord(int index, const QString &line)
{
return (index == line.length() - 1) || isKeywordSeparator(line.at(index + 1));
}
QList<LineParser::KeywordEntry> LineParser::keywordEntriesFromCandidates(
const QMap<int, int> &candidates, const QString &line)
{
// Ensure something is found
if (candidates.isEmpty())
return QList<KeywordEntry>();
// Convert candidates to entries
QList<KeywordEntry> entries;
QMapIterator<int, int> i(candidates);
i.toBack();
while (i.hasPrevious()) {
i.previous();
KeywordEntry entry;
entry.keywordStart = i.key();
entry.keywordIndex = i.value();
int keywordLength = m_keywords.at(entry.keywordIndex).name.length();
int entryTextLength = -1;
if (!entries.empty())
entryTextLength = entries.last().keywordStart - (entry.keywordStart + keywordLength);
entry.text = line.mid(entry.keywordStart + keywordLength, entryTextLength);
if (trimSeparators(entry.text).isEmpty() && !entries.empty())
// Take the text form the previous entry, consider:
// '<keyword1>: <keyword2>: <some text>'
entry.text = entries.last().text;
entries << entry;
}
return entries;
}
QString LineParser::trimSeparators(const QString &string)
{
QString result = string.trimmed();
while (startsWithSeparator(result))
result = result.right(result.length() - 1);
while (endsWithSeparator(result))
result = result.left(result.length() - 1);
return result;
}
bool LineParser::startsWithSeparator(const QString &string)
{
return !string.isEmpty() && isKeywordSeparator(string.at(0));
}
bool LineParser::endsWithSeparator(const QString &string)
{
return !string.isEmpty() && isKeywordSeparator(string.at(string.length() - 1));
}
QList<TodoItem> LineParser::todoItemsFromKeywordEntries(const QList<KeywordEntry> &entries)
{
QList<TodoItem> todoItems;
foreach (const KeywordEntry &entry, entries) {
TodoItem item;
item.text = m_keywords.at(entry.keywordIndex).name + entry.text;
item.color = m_keywords.at(entry.keywordIndex).color;
item.iconResource = m_keywords.at(entry.keywordIndex).iconResource;
todoItems << item;
}
return todoItems;
}
} // namespace Internal
} // namespace Todo
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