/src/libs/utils/filesearch.cpp
C++ | 260 lines | 204 code | 26 blank | 30 comment | 62 complexity | 6b3244e87d248251ef98a31777757064 MD5 | raw file
- /**
- ******************************************************************************
- *
- * @file filesearch.cpp
- * @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
- * Parts by Nokia Corporation (qt-info@nokia.com) Copyright (C) 2009.
- * @brief
- * @see The GNU Public License (GPL) Version 3
- * @defgroup
- * @{
- *
- *****************************************************************************/
- /*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
- #include "filesearch.h"
- #include <cctype>
- #include <QtCore/QIODevice>
- #include <QtCore/QBuffer>
- #include <QtCore/QFile>
- #include <QtCore/QFutureInterface>
- #include <QtCore/QtConcurrentRun>
- #include <QtCore/QRegExp>
- #include <QtCore/QCoreApplication>
- #include <qtconcurrent/runextensions.h>
- using namespace Utils;
- static inline QString msgCanceled(const QString &searchTerm, int numMatches, int numFilesSearched)
- {
- return QCoreApplication::translate("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("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("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,
- QMap<QString, QString> fileToContentsMap)
- {
- 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());
- QFile file;
- QBuffer buffer;
- foreach (QString s, files) {
- if (future.isPaused())
- future.waitForResume();
- if (future.isCanceled()) {
- future.setProgressValueAndText(numFilesSearched, msgCanceled(searchTerm, numMatches, numFilesSearched));
- break;
- }
- QIODevice *device;
- if (fileToContentsMap.contains(s)) {
- buffer.setData(fileToContentsMap.value(s).toLocal8Bit());
- device = &buffer;
- } else {
- file.setFileName(s);
- device = &file;
- }
- if (!device->open(QIODevice::ReadOnly))
- continue;
- int lineNr = 1;
- const char *startOfLastLine = NULL;
- bool firstChunk = true;
- while (!device->atEnd()) {
- if (!firstChunk)
- device->seek(device->pos()-sa.length()+1);
- const QByteArray chunk = device->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(s, lineNr, QString(res),
- regionPtr - startOfLastLine, sa.length()));
- ++numMatches;
- }
- }
- }
- }
- firstChunk = false;
- }
- ++numFilesSearched;
- future.setProgressValueAndText(numFilesSearched, msgFound(searchTerm, numMatches, numFilesSearched, files.size()));
- device->close();
- }
- if (!future.isCanceled())
- future.setProgressValueAndText(numFilesSearched, msgFound(searchTerm, numMatches, numFilesSearched));
- }
- void runFileSearchRegExp(QFutureInterface<FileSearchResult> &future,
- QString searchTerm,
- QStringList files,
- QTextDocument::FindFlags flags,
- QMap<QString, QString> fileToContentsMap)
- {
- 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);
- QFile file;
- QString str;
- QTextStream stream;
- foreach (const QString &s, files) {
- if (future.isPaused())
- future.waitForResume();
- if (future.isCanceled()) {
- future.setProgressValueAndText(numFilesSearched, msgCanceled(searchTerm, numMatches, numFilesSearched));
- break;
- }
- bool needsToCloseFile = false;
- if (fileToContentsMap.contains(s)) {
- str = fileToContentsMap.value(s);
- stream.setString(&str);
- } else {
- file.setFileName(s);
- if (!file.open(QIODevice::ReadOnly))
- continue;
- needsToCloseFile = true;
- stream.setDevice(&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(s, lineNr, line,
- pos, expression.matchedLength()));
- pos += expression.matchedLength();
- }
- ++lineNr;
- }
- ++numFilesSearched;
- future.setProgressValueAndText(numFilesSearched, msgFound(searchTerm, numMatches, numFilesSearched, files.size()));
- if (needsToCloseFile)
- file.close();
- }
- if (!future.isCanceled())
- future.setProgressValueAndText(numFilesSearched, msgFound(searchTerm, numMatches, numFilesSearched));
- }
- } // namespace
- QFuture<FileSearchResult> Utils::findInFiles(const QString &searchTerm, const QStringList &files,
- QTextDocument::FindFlags flags, QMap<QString, QString> fileToContentsMap)
- {
- return QtConcurrent::run<FileSearchResult, QString, QStringList, QTextDocument::FindFlags, QMap<QString, QString> >
- (runFileSearch, searchTerm, files, flags, fileToContentsMap);
- }
- QFuture<FileSearchResult> Utils::findInFilesRegExp(const QString &searchTerm, const QStringList &files,
- QTextDocument::FindFlags flags, QMap<QString, QString> fileToContentsMap)
- {
- return QtConcurrent::run<FileSearchResult, QString, QStringList, QTextDocument::FindFlags, QMap<QString, QString> >
- (runFileSearchRegExp, searchTerm, files, flags, fileToContentsMap);
- }