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authorPetr Mrázek <peterix@gmail.com>2016-04-10 15:53:05 +0200
committerPetr Mrázek <peterix@gmail.com>2016-05-01 00:00:14 +0200
commitb6d455a02bd338e9dc0faa09d4d8177ecd8d569a (patch)
tree41982bca1ede50049f2f8c7109dd18edeefde6d0 /api/logic/FileSystem.cpp
parent47e37635f50c09b4f9a9ee7699e3120bab3e4088 (diff)
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NOISSUE reorganize and document libraries
Diffstat (limited to 'api/logic/FileSystem.cpp')
-rw-r--r--api/logic/FileSystem.cpp436
1 files changed, 436 insertions, 0 deletions
diff --git a/api/logic/FileSystem.cpp b/api/logic/FileSystem.cpp
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+++ b/api/logic/FileSystem.cpp
@@ -0,0 +1,436 @@
+// Licensed under the Apache-2.0 license. See README.md for details.
+
+#include "FileSystem.h"
+
+#include <QDir>
+#include <QSaveFile>
+#include <QFileInfo>
+#include <QDebug>
+#include <QUrl>
+#include <QStandardPaths>
+
+namespace FS {
+
+void ensureExists(const QDir &dir)
+{
+ if (!QDir().mkpath(dir.absolutePath()))
+ {
+ throw FileSystemException("Unable to create directory " + dir.dirName() + " (" +
+ dir.absolutePath() + ")");
+ }
+}
+
+void write(const QString &filename, const QByteArray &data)
+{
+ ensureExists(QFileInfo(filename).dir());
+ QSaveFile file(filename);
+ if (!file.open(QSaveFile::WriteOnly))
+ {
+ throw FileSystemException("Couldn't open " + filename + " for writing: " +
+ file.errorString());
+ }
+ if (data.size() != file.write(data))
+ {
+ throw FileSystemException("Error writing data to " + filename + ": " +
+ file.errorString());
+ }
+ if (!file.commit())
+ {
+ throw FileSystemException("Error while committing data to " + filename + ": " +
+ file.errorString());
+ }
+}
+
+QByteArray read(const QString &filename)
+{
+ QFile file(filename);
+ if (!file.open(QFile::ReadOnly))
+ {
+ throw FileSystemException("Unable to open " + filename + " for reading: " +
+ file.errorString());
+ }
+ const qint64 size = file.size();
+ QByteArray data(int(size), 0);
+ const qint64 ret = file.read(data.data(), size);
+ if (ret == -1 || ret != size)
+ {
+ throw FileSystemException("Error reading data from " + filename + ": " +
+ file.errorString());
+ }
+ return data;
+}
+
+bool ensureFilePathExists(QString filenamepath)
+{
+ QFileInfo a(filenamepath);
+ QDir dir;
+ QString ensuredPath = a.path();
+ bool success = dir.mkpath(ensuredPath);
+ return success;
+}
+
+bool ensureFolderPathExists(QString foldernamepath)
+{
+ QFileInfo a(foldernamepath);
+ QDir dir;
+ QString ensuredPath = a.filePath();
+ bool success = dir.mkpath(ensuredPath);
+ return success;
+}
+
+bool copy::operator()(const QString &offset)
+{
+ //NOTE always deep copy on windows. the alternatives are too messy.
+ #if defined Q_OS_WIN32
+ m_followSymlinks = true;
+ #endif
+
+ auto src = PathCombine(m_src.absolutePath(), offset);
+ auto dst = PathCombine(m_dst.absolutePath(), offset);
+
+ QFileInfo currentSrc(src);
+ if (!currentSrc.exists())
+ return false;
+
+ if(!m_followSymlinks && currentSrc.isSymLink())
+ {
+ qDebug() << "creating symlink" << src << " - " << dst;
+ if (!ensureFilePathExists(dst))
+ {
+ qWarning() << "Cannot create path!";
+ return false;
+ }
+ return QFile::link(currentSrc.symLinkTarget(), dst);
+ }
+ else if(currentSrc.isFile())
+ {
+ qDebug() << "copying file" << src << " - " << dst;
+ if (!ensureFilePathExists(dst))
+ {
+ qWarning() << "Cannot create path!";
+ return false;
+ }
+ return QFile::copy(src, dst);
+ }
+ else if(currentSrc.isDir())
+ {
+ qDebug() << "recursing" << offset;
+ if (!ensureFolderPathExists(dst))
+ {
+ qWarning() << "Cannot create path!";
+ return false;
+ }
+ QDir currentDir(src);
+ for(auto & f : currentDir.entryList(QDir::Files | QDir::Dirs | QDir::NoDotAndDotDot | QDir::Hidden | QDir::System))
+ {
+ auto inner_offset = PathCombine(offset, f);
+ // ignore and skip stuff that matches the blacklist.
+ if(m_blacklist && m_blacklist->matches(inner_offset))
+ {
+ continue;
+ }
+ if(!operator()(inner_offset))
+ {
+ return false;
+ }
+ }
+ }
+ else
+ {
+ qCritical() << "Copy ERROR: Unknown filesystem object:" << src;
+ return false;
+ }
+ return true;
+}
+
+
+#if defined Q_OS_WIN32
+#include <windows.h>
+#include <string>
+#endif
+bool deletePath(QString path)
+{
+ bool OK = true;
+ QDir dir(path);
+
+ if (!dir.exists())
+ {
+ return OK;
+ }
+ auto allEntries = dir.entryInfoList(QDir::NoDotAndDotDot | QDir::System | QDir::Hidden |
+ QDir::AllDirs | QDir::Files,
+ QDir::DirsFirst);
+
+ for(auto & info: allEntries)
+ {
+#if defined Q_OS_WIN32
+ QString nativePath = QDir::toNativeSeparators(info.absoluteFilePath());
+ auto wString = nativePath.toStdWString();
+ DWORD dwAttrs = GetFileAttributesW(wString.c_str());
+ // Windows: check for junctions, reparse points and other nasty things of that sort
+ if(dwAttrs & FILE_ATTRIBUTE_REPARSE_POINT)
+ {
+ if (info.isFile())
+ {
+ OK &= QFile::remove(info.absoluteFilePath());
+ }
+ else if (info.isDir())
+ {
+ OK &= dir.rmdir(info.absoluteFilePath());
+ }
+ }
+#else
+ // We do not trust Qt with reparse points, but do trust it with unix symlinks.
+ if(info.isSymLink())
+ {
+ OK &= QFile::remove(info.absoluteFilePath());
+ }
+#endif
+ else if (info.isDir())
+ {
+ OK &= deletePath(info.absoluteFilePath());
+ }
+ else if (info.isFile())
+ {
+ OK &= QFile::remove(info.absoluteFilePath());
+ }
+ else
+ {
+ OK = false;
+ qCritical() << "Delete ERROR: Unknown filesystem object:" << info.absoluteFilePath();
+ }
+ }
+ OK &= dir.rmdir(dir.absolutePath());
+ return OK;
+}
+
+
+QString PathCombine(QString path1, QString path2)
+{
+ if(!path1.size())
+ return path2;
+ if(!path2.size())
+ return path1;
+ return QDir::cleanPath(path1 + QDir::separator() + path2);
+}
+
+QString PathCombine(QString path1, QString path2, QString path3)
+{
+ return PathCombine(PathCombine(path1, path2), path3);
+}
+
+QString AbsolutePath(QString path)
+{
+ return QFileInfo(path).absolutePath();
+}
+
+QString ResolveExecutable(QString path)
+{
+ if (path.isEmpty())
+ {
+ return QString();
+ }
+ if(!path.contains('/'))
+ {
+ path = QStandardPaths::findExecutable(path);
+ }
+ QFileInfo pathInfo(path);
+ if(!pathInfo.exists() || !pathInfo.isExecutable())
+ {
+ return QString();
+ }
+ return pathInfo.absoluteFilePath();
+}
+
+/**
+ * Normalize path
+ *
+ * Any paths inside the current directory will be normalized to relative paths (to current)
+ * Other paths will be made absolute
+ */
+QString NormalizePath(QString path)
+{
+ QDir a = QDir::currentPath();
+ QString currentAbsolute = a.absolutePath();
+
+ QDir b(path);
+ QString newAbsolute = b.absolutePath();
+
+ if (newAbsolute.startsWith(currentAbsolute))
+ {
+ return a.relativeFilePath(newAbsolute);
+ }
+ else
+ {
+ return newAbsolute;
+ }
+}
+
+QString badFilenameChars = "\"\\/?<>:*|!";
+
+QString RemoveInvalidFilenameChars(QString string, QChar replaceWith)
+{
+ for (int i = 0; i < string.length(); i++)
+ {
+ if (badFilenameChars.contains(string[i]))
+ {
+ string[i] = replaceWith;
+ }
+ }
+ return string;
+}
+
+QString DirNameFromString(QString string, QString inDir)
+{
+ int num = 0;
+ QString baseName = RemoveInvalidFilenameChars(string, '-');
+ QString dirName;
+ do
+ {
+ if(num == 0)
+ {
+ dirName = baseName;
+ }
+ else
+ {
+ dirName = baseName + QString::number(num);;
+ }
+
+ // If it's over 9000
+ if (num > 9000)
+ return "";
+ num++;
+ } while (QFileInfo(PathCombine(inDir, dirName)).exists());
+ return dirName;
+}
+
+// Does the directory path contain any '!'? If yes, return true, otherwise false.
+// (This is a problem for Java)
+bool checkProblemticPathJava(QDir folder)
+{
+ QString pathfoldername = folder.absolutePath();
+ return pathfoldername.contains("!", Qt::CaseInsensitive);
+}
+
+#include <QStandardPaths>
+#include <QFile>
+#include <QTextStream>
+
+// Win32 crap
+#if defined Q_OS_WIN
+
+#include <windows.h>
+#include <winnls.h>
+#include <shobjidl.h>
+#include <objbase.h>
+#include <objidl.h>
+#include <shlguid.h>
+#include <shlobj.h>
+
+bool called_coinit = false;
+
+HRESULT CreateLink(LPCSTR linkPath, LPCSTR targetPath, LPCSTR args)
+{
+ HRESULT hres;
+
+ if (!called_coinit)
+ {
+ hres = CoInitialize(NULL);
+ called_coinit = true;
+
+ if (!SUCCEEDED(hres))
+ {
+ qWarning("Failed to initialize COM. Error 0x%08X", hres);
+ return hres;
+ }
+ }
+
+ IShellLink *link;
+ hres = CoCreateInstance(CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER, IID_IShellLink,
+ (LPVOID *)&link);
+
+ if (SUCCEEDED(hres))
+ {
+ IPersistFile *persistFile;
+
+ link->SetPath(targetPath);
+ link->SetArguments(args);
+
+ hres = link->QueryInterface(IID_IPersistFile, (LPVOID *)&persistFile);
+ if (SUCCEEDED(hres))
+ {
+ WCHAR wstr[MAX_PATH];
+
+ MultiByteToWideChar(CP_ACP, 0, linkPath, -1, wstr, MAX_PATH);
+
+ hres = persistFile->Save(wstr, TRUE);
+ persistFile->Release();
+ }
+ link->Release();
+ }
+ return hres;
+}
+
+#endif
+
+QString getDesktopDir()
+{
+ return QStandardPaths::writableLocation(QStandardPaths::DesktopLocation);
+}
+
+// Cross-platform Shortcut creation
+bool createShortCut(QString location, QString dest, QStringList args, QString name,
+ QString icon)
+{
+#if defined Q_OS_LINUX
+ location = PathCombine(location, name + ".desktop");
+
+ QFile f(location);
+ f.open(QIODevice::WriteOnly | QIODevice::Text);
+ QTextStream stream(&f);
+
+ QString argstring;
+ if (!args.empty())
+ argstring = " '" + args.join("' '") + "'";
+
+ stream << "[Desktop Entry]"
+ << "\n";
+ stream << "Type=Application"
+ << "\n";
+ stream << "TryExec=" << dest.toLocal8Bit() << "\n";
+ stream << "Exec=" << dest.toLocal8Bit() << argstring.toLocal8Bit() << "\n";
+ stream << "Name=" << name.toLocal8Bit() << "\n";
+ stream << "Icon=" << icon.toLocal8Bit() << "\n";
+
+ stream.flush();
+ f.close();
+
+ f.setPermissions(f.permissions() | QFileDevice::ExeOwner | QFileDevice::ExeGroup |
+ QFileDevice::ExeOther);
+
+ return true;
+#elif defined Q_OS_WIN
+ // TODO: Fix
+ // QFile file(PathCombine(location, name + ".lnk"));
+ // WCHAR *file_w;
+ // WCHAR *dest_w;
+ // WCHAR *args_w;
+ // file.fileName().toWCharArray(file_w);
+ // dest.toWCharArray(dest_w);
+
+ // QString argStr;
+ // for (int i = 0; i < args.count(); i++)
+ // {
+ // argStr.append(args[i]);
+ // argStr.append(" ");
+ // }
+ // argStr.toWCharArray(args_w);
+
+ // return SUCCEEDED(CreateLink(file_w, dest_w, args_w));
+ return false;
+#else
+ qWarning("Desktop Shortcuts not supported on your platform!");
+ return false;
+#endif
+}
+}