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/****************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#include "clangfixitsrefactoringchanges.h"
#include <coreplugin/editormanager/editormanager.h>
#include <QDebug>
#include <QFileInfo>
#include <QLoggingCategory>
#include <QTextBlock>
#include <QTextCursor>
#include <utils/qtcassert.h>
Q_LOGGING_CATEGORY(fixitsLog, "qtc.clangtools.fixits");
using namespace Utils;
namespace ClangTools {
namespace Internal {
int FixitsRefactoringFile::position(const QString &filePath, unsigned line, unsigned column) const
{
QTC_ASSERT(line != 0, return -1);
QTC_ASSERT(column != 0, return -1);
return document(filePath)->findBlockByNumber(line - 1).position() + column - 1;
}
static QDebug operator<<(QDebug debug, const ReplacementOperation &op)
{
debug.nospace() << "ReplacementOperation("
<< op.pos << ", "
<< op.length << ", "
<< op.text << ", "
<< op.apply
<< ")"
;
return debug;
}
bool FixitsRefactoringFile::apply()
{
qCDebug(fixitsLog) << "Applying fixits for" << m_filePath;
if (m_replacementOperations.isEmpty())
return false; // Error nothing to apply TODO: Is this correct to return?
QTC_ASSERT(!m_filePath.isEmpty(), return false);
// Apply changes
for (int i=0; i < m_replacementOperations.size(); ++i) {
ReplacementOperation &op = *m_replacementOperations[i];
if (op.apply) {
// Check for permissions
if (!QFileInfo(op.fileName).isWritable())
return false; // Error file not writable
qCDebug(fixitsLog) << " " << i << "Applying" << op;
// Shift subsequent operations that are affected
shiftAffectedReplacements(op, i + 1);
// Apply
QTextDocument *doc = document(op.fileName);
QTextCursor cursor(doc);
cursor.setPosition(op.pos);
cursor.setPosition(op.pos + op.length, QTextCursor::KeepAnchor);
cursor.insertText(op.text);
}
}
// Write file
if (!m_textFileFormat.codec)
return false; // Error reading file
QString error;
for (auto it = m_documents.begin(); it != m_documents.end(); ++it) {
if (!m_textFileFormat.writeFile(it.key(), it.value()->toPlainText(), &error)) {
qCDebug(fixitsLog) << "ERROR: Could not write file" << it.key() << ":" << error;
return false; // Error writing file
}
}
return true;
}
QTextDocument *FixitsRefactoringFile::document(const QString &filePath) const
{
if (m_documents.find(filePath) == m_documents.end()) {
QString fileContents;
if (!filePath.isEmpty()) {
QString error;
QTextCodec *defaultCodec = Core::EditorManager::defaultTextCodec();
TextFileFormat::ReadResult result = TextFileFormat::readFile(
filePath, defaultCodec,
&fileContents, &m_textFileFormat,
&error);
if (result != TextFileFormat::ReadSuccess) {
qCDebug(fixitsLog) << "ERROR: Could not read " << filePath << ":" << error;
m_textFileFormat.codec = nullptr;
}
}
// always make a QTextDocument to avoid excessive null checks
m_documents[filePath] = new QTextDocument(fileContents);
}
return m_documents[filePath];
}
void FixitsRefactoringFile::shiftAffectedReplacements(const ReplacementOperation &op, int startIndex)
{
for (int i = startIndex; i < m_replacementOperations.size(); ++i) {
ReplacementOperation ¤t = *m_replacementOperations[i];
if (op.fileName != current.fileName)
continue;
ReplacementOperation before = current;
if (op.pos <= current.pos)
current.pos += op.text.size();
if (op.pos < current.pos)
current.pos -= op.length;
qCDebug(fixitsLog) << " shift:" << i << before << " ====> " << current;
}
}
} // namespace Internal
} // namespace ClangTools
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