501 lines
13 KiB
C++
501 lines
13 KiB
C++
// Licensed under the Apache-2.0 license. See README.md for details.
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#include "FileSystem.h"
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#include <QDir>
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#include <QFile>
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#include <QSaveFile>
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#include <QFileInfo>
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#include <QDebug>
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#include <QUrl>
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#include <QStandardPaths>
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#include <QTextStream>
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#if defined Q_OS_WIN32
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#include <windows.h>
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#include <string>
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#include <sys/utime.h>
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#include <winnls.h>
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#include <shobjidl.h>
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#include <objbase.h>
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#include <objidl.h>
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#include <shlguid.h>
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#include <shlobj.h>
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#else
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#include <utime.h>
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#endif
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namespace FS {
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void ensureExists(const QDir &dir)
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{
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if (!QDir().mkpath(dir.absolutePath()))
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{
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throw FileSystemException("Unable to create folder " + dir.dirName() + " (" +
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dir.absolutePath() + ")");
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}
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}
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void write(const QString &filename, const QByteArray &data)
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{
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ensureExists(QFileInfo(filename).dir());
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QSaveFile file(filename);
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if (!file.open(QSaveFile::WriteOnly))
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{
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throw FileSystemException("Couldn't open " + filename + " for writing: " +
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file.errorString());
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}
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if (data.size() != file.write(data))
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{
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throw FileSystemException("Error writing data to " + filename + ": " +
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file.errorString());
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}
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if (!file.commit())
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{
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throw FileSystemException("Error while committing data to " + filename + ": " +
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file.errorString());
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}
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}
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QByteArray read(const QString &filename)
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{
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QFile file(filename);
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if (!file.open(QFile::ReadOnly))
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{
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throw FileSystemException("Unable to open " + filename + " for reading: " +
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file.errorString());
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}
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const qint64 size = file.size();
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QByteArray data(int(size), 0);
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const qint64 ret = file.read(data.data(), size);
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if (ret == -1 || ret != size)
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{
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throw FileSystemException("Error reading data from " + filename + ": " +
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file.errorString());
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}
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return data;
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}
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bool updateTimestamp(const QString& filename)
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{
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#ifdef Q_OS_WIN32
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std::wstring filename_utf_16 = filename.toStdWString();
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return (_wutime64(filename_utf_16.c_str(), nullptr) == 0);
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#else
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QByteArray filenameBA = QFile::encodeName(filename);
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return (utime(filenameBA.data(), nullptr) == 0);
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#endif
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}
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bool ensureFilePathExists(QString filenamepath)
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{
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QFileInfo a(filenamepath);
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QDir dir;
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QString ensuredPath = a.path();
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bool success = dir.mkpath(ensuredPath);
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return success;
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}
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bool ensureFolderPathExists(QString foldernamepath)
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{
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QFileInfo a(foldernamepath);
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QDir dir;
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QString ensuredPath = a.filePath();
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bool success = dir.mkpath(ensuredPath);
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return success;
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}
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bool copy::operator()(const QString &offset)
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{
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//NOTE always deep copy on windows. the alternatives are too messy.
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#if defined Q_OS_WIN32
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m_followSymlinks = true;
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#endif
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auto src = PathCombine(m_src.absolutePath(), offset);
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auto dst = PathCombine(m_dst.absolutePath(), offset);
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QFileInfo currentSrc(src);
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if (!currentSrc.exists())
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return false;
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if(!m_followSymlinks && currentSrc.isSymLink())
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{
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qDebug() << "creating symlink" << src << " - " << dst;
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if (!ensureFilePathExists(dst))
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{
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qWarning() << "Cannot create path!";
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return false;
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}
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return QFile::link(currentSrc.symLinkTarget(), dst);
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}
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else if(currentSrc.isFile())
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{
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qDebug() << "copying file" << src << " - " << dst;
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if (!ensureFilePathExists(dst))
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{
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qWarning() << "Cannot create path!";
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return false;
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}
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return QFile::copy(src, dst);
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}
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else if(currentSrc.isDir())
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{
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qDebug() << "recursing" << offset;
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if (!ensureFolderPathExists(dst))
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{
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qWarning() << "Cannot create path!";
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return false;
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}
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QDir currentDir(src);
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for(auto & f : currentDir.entryList(QDir::Files | QDir::Dirs | QDir::NoDotAndDotDot | QDir::Hidden | QDir::System))
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{
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auto inner_offset = PathCombine(offset, f);
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// ignore and skip stuff that matches the blacklist.
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if(m_blacklist && m_blacklist->matches(inner_offset))
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{
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continue;
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}
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if(!operator()(inner_offset))
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{
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qWarning() << "Failed to copy" << inner_offset;
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return false;
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}
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}
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}
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else
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{
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qCritical() << "Copy ERROR: Unknown filesystem object:" << src;
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return false;
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}
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return true;
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}
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bool deletePath(QString path)
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{
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bool OK = true;
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QFileInfo finfo(path);
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if(finfo.isFile()) {
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return QFile::remove(path);
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}
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QDir dir(path);
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if (!dir.exists())
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{
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return OK;
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}
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auto allEntries = dir.entryInfoList(QDir::NoDotAndDotDot | QDir::System | QDir::Hidden |
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QDir::AllDirs | QDir::Files,
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QDir::DirsFirst);
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for(auto & info: allEntries)
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{
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#if defined Q_OS_WIN32
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QString nativePath = QDir::toNativeSeparators(info.absoluteFilePath());
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auto wString = nativePath.toStdWString();
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DWORD dwAttrs = GetFileAttributesW(wString.c_str());
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// Windows: check for junctions, reparse points and other nasty things of that sort
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if(dwAttrs & FILE_ATTRIBUTE_REPARSE_POINT)
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{
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if (info.isFile())
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{
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OK &= QFile::remove(info.absoluteFilePath());
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}
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else if (info.isDir())
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{
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OK &= dir.rmdir(info.absoluteFilePath());
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}
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}
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#else
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// We do not trust Qt with reparse points, but do trust it with unix symlinks.
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if(info.isSymLink())
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{
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OK &= QFile::remove(info.absoluteFilePath());
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}
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#endif
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else if (info.isDir())
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{
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OK &= deletePath(info.absoluteFilePath());
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}
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else if (info.isFile())
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{
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OK &= QFile::remove(info.absoluteFilePath());
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}
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else
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{
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OK = false;
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qCritical() << "Delete ERROR: Unknown filesystem object:" << info.absoluteFilePath();
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}
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}
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OK &= dir.rmdir(dir.absolutePath());
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return OK;
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}
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QString PathCombine(const QString & path1, const QString & path2)
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{
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if(!path1.size())
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return path2;
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if(!path2.size())
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return path1;
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return QDir::cleanPath(path1 + QDir::separator() + path2);
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}
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QString PathCombine(const QString & path1, const QString & path2, const QString & path3)
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{
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return PathCombine(PathCombine(path1, path2), path3);
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}
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QString PathCombine(const QString & path1, const QString & path2, const QString & path3, const QString & path4)
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{
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return PathCombine(PathCombine(path1, path2, path3), path4);
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}
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QString AbsolutePath(QString path)
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{
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return QFileInfo(path).absolutePath();
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}
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QString ResolveExecutable(QString path)
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{
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if (path.isEmpty())
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{
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return QString();
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}
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if(!path.contains('/'))
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{
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path = QStandardPaths::findExecutable(path);
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}
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QFileInfo pathInfo(path);
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if(!pathInfo.exists() || !pathInfo.isExecutable())
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{
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return QString();
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}
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return pathInfo.absoluteFilePath();
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}
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/**
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* Normalize path
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*
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* Any paths inside the current folder will be normalized to relative paths (to current)
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* Other paths will be made absolute
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*/
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QString NormalizePath(QString path)
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{
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QDir a = QDir::currentPath();
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QString currentAbsolute = a.absolutePath();
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QDir b(path);
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QString newAbsolute = b.absolutePath();
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if (newAbsolute.startsWith(currentAbsolute))
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{
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return a.relativeFilePath(newAbsolute);
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}
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else
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{
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return newAbsolute;
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}
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}
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QString badFilenameChars = "\"\\/?<>:;*|!+\r\n";
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QString RemoveInvalidFilenameChars(QString string, QChar replaceWith)
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{
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for (int i = 0; i < string.length(); i++)
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{
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if (badFilenameChars.contains(string[i]))
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{
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string[i] = replaceWith;
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}
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}
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return string;
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}
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QString DirNameFromString(QString string, QString inDir)
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{
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int num = 0;
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QString baseName = RemoveInvalidFilenameChars(string, '-');
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QString dirName;
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do
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{
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if(num == 0)
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{
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dirName = baseName;
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}
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else
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{
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dirName = baseName + QString::number(num);;
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}
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// If it's over 9000
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if (num > 9000)
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return "";
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num++;
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} while (QFileInfo(PathCombine(inDir, dirName)).exists());
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return dirName;
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}
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// Does the folder path contain any '!'? If yes, return true, otherwise false.
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// (This is a problem for Java)
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bool checkProblemticPathJava(QDir folder)
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{
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QString pathfoldername = folder.absolutePath();
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return pathfoldername.contains("!", Qt::CaseInsensitive);
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}
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// Win32 crap
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#ifdef Q_OS_WIN
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bool called_coinit = false;
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HRESULT CreateLink(LPCSTR linkPath, LPCSTR targetPath, LPCSTR args)
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{
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HRESULT hres;
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if (!called_coinit)
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{
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hres = CoInitialize(NULL);
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called_coinit = true;
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if (!SUCCEEDED(hres))
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{
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qWarning("Failed to initialize COM. Error 0x%08lX", hres);
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return hres;
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}
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}
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IShellLinkA *link;
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hres = CoCreateInstance(CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER, IID_IShellLink,
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(LPVOID *)&link);
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if (SUCCEEDED(hres))
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{
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IPersistFile *persistFile;
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link->SetPath(targetPath);
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link->SetArguments(args);
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hres = link->QueryInterface(IID_IPersistFile, (LPVOID *)&persistFile);
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if (SUCCEEDED(hres))
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{
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WCHAR wstr[MAX_PATH];
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MultiByteToWideChar(CP_ACP, 0, linkPath, -1, wstr, MAX_PATH);
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hres = persistFile->Save(wstr, TRUE);
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persistFile->Release();
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}
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link->Release();
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}
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return hres;
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}
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#endif
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QString getDesktopDir()
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{
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return QStandardPaths::writableLocation(QStandardPaths::DesktopLocation);
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}
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// Cross-platform Shortcut creation
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bool createShortCut(QString location, QString dest, QStringList args, QString name,
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QString icon)
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{
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#if defined(Q_OS_LINUX) || defined(Q_OS_FREEBSD)
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location = PathCombine(location, name + ".desktop");
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QFile f(location);
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f.open(QIODevice::WriteOnly | QIODevice::Text);
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QTextStream stream(&f);
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QString argstring;
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if (!args.empty())
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argstring = " '" + args.join("' '") + "'";
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stream << "[Desktop Entry]"
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<< "\n";
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stream << "Type=Application"
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<< "\n";
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stream << "TryExec=" << dest.toLocal8Bit() << "\n";
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stream << "Exec=" << dest.toLocal8Bit() << argstring.toLocal8Bit() << "\n";
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stream << "Name=" << name.toLocal8Bit() << "\n";
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stream << "Icon=" << icon.toLocal8Bit() << "\n";
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stream.flush();
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f.close();
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f.setPermissions(f.permissions() | QFileDevice::ExeOwner | QFileDevice::ExeGroup |
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QFileDevice::ExeOther);
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return true;
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#elif defined Q_OS_WIN
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// TODO: Fix
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// QFile file(PathCombine(location, name + ".lnk"));
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// WCHAR *file_w;
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// WCHAR *dest_w;
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// WCHAR *args_w;
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// file.fileName().toWCharArray(file_w);
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// dest.toWCharArray(dest_w);
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// QString argStr;
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// for (int i = 0; i < args.count(); i++)
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// {
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// argStr.append(args[i]);
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// argStr.append(" ");
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// }
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// argStr.toWCharArray(args_w);
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// return SUCCEEDED(CreateLink(file_w, dest_w, args_w));
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return false;
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#else
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qWarning("Desktop Shortcuts not supported on your platform!");
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return false;
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#endif
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}
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QStringList listFolderPaths(QDir root)
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{
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auto createAbsPath = [](QFileInfo const& entry) { return FS::PathCombine(entry.path(), entry.fileName()); };
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QStringList entries;
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root.refresh();
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for (auto entry : root.entryInfoList(QDir::Filter::Files)) {
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entries.append(createAbsPath(entry));
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}
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for (auto entry : root.entryInfoList(QDir::Filter::AllDirs | QDir::Filter::NoDotAndDotDot)) {
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entries.append(listFolderPaths(createAbsPath(entry)));
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}
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return entries;
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}
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bool overrideFolder(QString overwritten_path, QString override_path)
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{
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if (!FS::ensureFolderPathExists(overwritten_path))
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return false;
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QStringList paths_to_override;
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QDir root_override (override_path);
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for (auto file : listFolderPaths(root_override)) {
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QString destination = file;
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destination.replace(override_path, overwritten_path);
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qDebug() << QString("Applying override %1 in %2").arg(file, destination);
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if (QFile::exists(destination))
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QFile::remove(destination);
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if (!QFile::rename(file, destination)) {
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qCritical() << QString("Failed to apply override from %1 to %2").arg(file, destination);
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return false;
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}
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}
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return true;
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}
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}
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