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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Qt Software Information (qt-info@nokia.com)
**
** Commercial Usage
**
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
**
** Alternatively, 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.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
**
**************************************************************************/
#include "filesearch.h"
#include <cctype>
#include <QtCore/QFile>
#include <QtCore/QDir>
#include <QtCore/QFutureInterface>
#include <QtCore/QtConcurrentRun>
#include <QtCore/QRegExp>
#include <QtCore/QCoreApplication>
#include <qtconcurrent/runextensions.h>
using namespace Core::Utils;
static inline QString msgCanceled(const QString &searchTerm, int numMatches, int numFilesSearched)
{
return QCoreApplication::translate("Core::Utils::FileSearch",
"%1: canceled. %n occurrences found in %2 files.",
0, QCoreApplication::CodecForTr, numMatches).
arg(searchTerm).arg(numFilesSearched);
}
static inline QString msgFound(const QString &searchTerm, int numMatches, int numFilesSearched)
{
return QCoreApplication::translate("Core::Utils::FileSearch",
"%1: %n occurrences found in %2 files.",
0, QCoreApplication::CodecForTr, numMatches).
arg(searchTerm).arg(numFilesSearched);
}
static inline QString msgFound(const QString &searchTerm, int numMatches, int numFilesSearched, int filesSize)
{
return QCoreApplication::translate("Core::Utils::FileSearch",
"%1: %n occurrences found in %2 of %3 files.",
0, QCoreApplication::CodecForTr, numMatches).
arg(searchTerm).arg(numFilesSearched).arg(filesSize);
}
namespace {
void runFileSearch(QFutureInterface<FileSearchResult> &future,
QString searchTerm,
QStringList files,
QTextDocument::FindFlags flags)
{
future.setProgressRange(0, files.size());
int numFilesSearched = 0;
int numMatches = 0;
bool caseInsensitive = !(flags & QTextDocument::FindCaseSensitively);
bool wholeWord = (flags & QTextDocument::FindWholeWords);
QByteArray sa = searchTerm.toUtf8();
int scMaxIndex = sa.length()-1;
const char *sc = sa.constData();
QByteArray sal = searchTerm.toLower().toUtf8();
const char *scl = sal.constData();
QByteArray sau = searchTerm.toUpper().toUtf8();
const char *scu = sau.constData();
int chunkSize = qMax(100000, sa.length());
foreach (QString s, files) {
if (future.isPaused())
future.waitForResume();
if (future.isCanceled()) {
future.setProgressValueAndText(numFilesSearched, msgCanceled(searchTerm, numMatches, numFilesSearched));
break;
}
QFile file(s);
if (!file.open(QIODevice::ReadOnly))
continue;
int lineNr = 1;
const char *startOfLastLine = NULL;
bool firstChunk = true;
while (!file.atEnd()) {
if (!firstChunk)
file.seek(file.pos()-sa.length()+1);
const QByteArray chunk = file.read(chunkSize);
const char *chunkPtr = chunk.constData();
startOfLastLine = chunkPtr;
for (const char *regionPtr = chunkPtr; regionPtr < chunkPtr + chunk.length()-scMaxIndex; ++regionPtr) {
const char *regionEnd = regionPtr + scMaxIndex;
if (*regionPtr == '\n') {
startOfLastLine = regionPtr + 1;
++lineNr;
}
else if (
// case sensitive
(!caseInsensitive && *regionPtr == sc[0] && *regionEnd == sc[scMaxIndex])
||
// case insensitive
(caseInsensitive && (*regionPtr == scl[0] || *regionPtr == scu[0])
&& (*regionEnd == scl[scMaxIndex] || *regionEnd == scu[scMaxIndex]))
) {
const char *afterRegion = regionEnd + 1;
const char *beforeRegion = regionPtr - 1;
bool equal = true;
if (wholeWord &&
( isalnum(*beforeRegion)
|| (*beforeRegion == '_')
|| isalnum(*afterRegion)
|| (*afterRegion == '_'))) {
equal = false;
}
int regionIndex = 1;
for (const char *regionCursor = regionPtr + 1; regionCursor < regionEnd; ++regionCursor, ++regionIndex) {
if ( // case sensitive
(!caseInsensitive && equal && *regionCursor != sc[regionIndex])
||
// case insensitive
(caseInsensitive && equal && *regionCursor != sc[regionIndex] && *regionCursor != scl[regionIndex] && *regionCursor != scu[regionIndex])
) {
equal = false;
}
}
if (equal) {
int textLength = chunk.length() - (startOfLastLine - chunkPtr);
if (textLength > 0) {
QByteArray res;
res.reserve(256);
int i = 0;
int n = 0;
while (startOfLastLine[i] != '\n' && startOfLastLine[i] != '\r' && i < textLength && n++ < 256)
res.append(startOfLastLine[i++]);
future.reportResult(FileSearchResult(QDir::toNativeSeparators(s), lineNr, QString(res),
regionPtr - startOfLastLine, sa.length()));
++numMatches;
}
}
}
}
firstChunk = false;
}
++numFilesSearched;
future.setProgressValueAndText(numFilesSearched, msgFound(searchTerm, numMatches, numFilesSearched, files.size()));
}
if (!future.isCanceled())
future.setProgressValueAndText(numFilesSearched, msgFound(searchTerm, numMatches, numFilesSearched));
}
void runFileSearchRegExp(QFutureInterface<FileSearchResult> &future,
QString searchTerm,
QStringList files,
QTextDocument::FindFlags flags)
{
future.setProgressRange(0, files.size());
int numFilesSearched = 0;
int numMatches = 0;
if (flags & QTextDocument::FindWholeWords)
searchTerm = QString::fromLatin1("\\b%1\\b").arg(searchTerm);
const Qt::CaseSensitivity caseSensitivity = (flags & QTextDocument::FindCaseSensitively) ? Qt::CaseSensitive : Qt::CaseInsensitive;
const QRegExp expression(searchTerm, caseSensitivity);
foreach (const QString &s, files) {
if (future.isPaused())
future.waitForResume();
if (future.isCanceled()) {
future.setProgressValueAndText(numFilesSearched, msgCanceled(searchTerm, numMatches, numFilesSearched));
break;
}
QFile file(s);
if (!file.open(QIODevice::ReadOnly))
continue;
QTextStream stream(&file);
int lineNr = 1;
QString line;
while (!stream.atEnd()) {
line = stream.readLine();
int pos = 0;
while ((pos = expression.indexIn(line, pos)) != -1) {
future.reportResult(FileSearchResult(QDir::toNativeSeparators(s), lineNr, line,
pos, expression.matchedLength()));
pos += expression.matchedLength();
}
++lineNr;
}
++numFilesSearched;
future.setProgressValueAndText(numFilesSearched, msgFound(searchTerm, numMatches, numFilesSearched, files.size()));
}
if (!future.isCanceled())
future.setProgressValueAndText(numFilesSearched, msgFound(searchTerm, numMatches, numFilesSearched));
}
} // namespace
QFuture<FileSearchResult> Core::Utils::findInFiles(const QString &searchTerm, const QStringList &files,
QTextDocument::FindFlags flags)
{
return QtConcurrent::run<FileSearchResult, QString, QStringList, QTextDocument::FindFlags>(runFileSearch, searchTerm, files, flags);
}
QFuture<FileSearchResult> Core::Utils::findInFilesRegExp(const QString &searchTerm, const QStringList &files,
QTextDocument::FindFlags flags)
{
return QtConcurrent::run<FileSearchResult, QString, QStringList, QTextDocument::FindFlags>(runFileSearchRegExp, searchTerm, files, flags);
}
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