Replace platform-specific code in Private::DefaultProfile with QStandardPaths.

This should also fix Profile::location(SpecialFolder::Config) on
Windows.

src/base/private/profile_p.cpp

@@ -32,29 +32,21 @@
 
 #include <QCoreApplication>
 
-#include <QStandardPaths>
-
-#ifdef Q_OS_MAC
-#include <CoreServices/CoreServices.h>
-#include <Carbon/Carbon.h>
-#endif
-
-#ifdef Q_OS_WIN
-#include <shlobj.h>
-#endif
-
 #include "base/utils/fs.h"
 
 Private::Profile::Profile(const QString &configurationName)
-    : m_configurationName {configurationName.isEmpty()
-                           ? QCoreApplication::applicationName()
-                           : QCoreApplication::applicationName() + QLatin1Char('_') + configurationName}
+    : m_configurationSuffix {configurationName.isEmpty() ? QString() : QLatin1Char('_') + configurationName}
 {
 }
 
-QString Private::Profile::configurationName() const
+QString Private::Profile::configurationSuffix() const
 {
-    return m_configurationName;
+    return m_configurationSuffix;
+}
+
+QString Private::Profile::profileName() const
+{
+    return QCoreApplication::applicationName() + configurationSuffix();
 }
 
 Private::DefaultProfile::DefaultProfile(const QString &configurationName)
@@ -69,81 +61,28 @@ QString Private::DefaultProfile::baseDirectory() const
 
 QString Private::DefaultProfile::cacheLocation() const
 {
-    QString result;
-#if defined(Q_OS_WIN) || defined(Q_OS_OS2)
-    result = dataLocation() + QLatin1String("cache");
-#else
-#ifdef Q_OS_MAC
-    // http://developer.apple.com/documentation/Carbon/Reference/Folder_Manager/Reference/reference.html
-    FSRef ref;
-    OSErr err = FSFindFolder(kUserDomain, kCachedDataFolderType, false, &ref);
-    if (err)
-        return QString();
-    QByteArray ba(2048, 0);
-    if (FSRefMakePath(&ref, reinterpret_cast<UInt8 *>(ba.data()), ba.size()) == noErr)
-        result = QString::fromUtf8(ba).normalized(QString::NormalizationForm_C);
-    result += QLatin1Char('/') + configurationName();
-#else
-    QString xdgCacheHome = QLatin1String(qgetenv("XDG_CACHE_HOME"));
-    if (xdgCacheHome.isEmpty())
-        xdgCacheHome = QDir::homePath() + QLatin1String("/.cache");
-    xdgCacheHome += QLatin1Char('/') + configurationName();
-    result = xdgCacheHome;
-#endif
-#endif
-    if (!result.endsWith("/"))
-        result += "/";
-    return result;
+    return locationWithConfigurationName(QStandardPaths::CacheLocation);
 }
 
 QString Private::DefaultProfile::configLocation() const
 {
-    QString result;
-#if defined(Q_OS_WIN) || defined(Q_OS_OS2)
-    result = dataLocation() + QLatin1String("config");
-#else
-#ifdef Q_OS_MAC
-    result = QDir::homePath() + QLatin1String("/Library/Preferences/") + configurationName();
+#if defined(Q_OS_WIN)
+    // On Windows QSettings stores files in FOLDERID_RoamingAppData\AppName
+    return locationWithConfigurationName(QStandardPaths::AppDataLocation);
 #else
-    QString xdgConfigHome = QLatin1String(qgetenv("XDG_CONFIG_HOME"));
-    if (xdgConfigHome.isEmpty())
-        xdgConfigHome = QDir::homePath() + QLatin1String("/.config");
-    xdgConfigHome += QLatin1Char('/') + configurationName();
-    result = xdgConfigHome;
-#endif
+    return locationWithConfigurationName(QStandardPaths::AppConfigLocation);
 #endif
-    return result;
 }
 
 QString Private::DefaultProfile::dataLocation() const
 {
-    QString result;
-#if defined(Q_OS_WIN)
-    wchar_t path[MAX_PATH + 1] = {L'\0'};
-    if (SHGetSpecialFolderPathW(0, path, CSIDL_LOCAL_APPDATA, FALSE))
-        result = Utils::Fs::fromNativePath(QString::fromWCharArray(path));
-    if (!QCoreApplication::applicationName().isEmpty())
-        result += QLatin1String("/") + qApp->applicationName();
-#elif defined(Q_OS_MAC)
-    FSRef ref;
-    OSErr err = FSFindFolder(kUserDomain, kApplicationSupportFolderType, false, &ref);
-    if (err)
-        return QString();
-    QByteArray ba(2048, 0);
-    if (FSRefMakePath(&ref, reinterpret_cast<UInt8 *>(ba.data()), ba.size()) == noErr)
-        result = QString::fromUtf8(ba).normalized(QString::NormalizationForm_C);
-    result += QLatin1Char('/') + qApp->applicationName();
+#if defined(Q_OS_WIN) || defined (Q_OS_MAC)
+    return locationWithConfigurationName(QStandardPaths::AppLocalDataLocation);
 #else
-    QString xdgDataHome = QLatin1String(qgetenv("XDG_DATA_HOME"));
-    if (xdgDataHome.isEmpty())
-        xdgDataHome = QDir::homePath() + QLatin1String("/.local/share");
-    xdgDataHome += QLatin1String("/data/")
-            + qApp->applicationName();
-    result = xdgDataHome;
+    // on Linux gods know why qBittorrent creates 'data' subdirectory in ~/.local/share/
+    return QStandardPaths::writableLocation(QStandardPaths::GenericDataLocation)
+        + QLatin1String("/data/") + profileName() + QLatin1Char('/');
 #endif
-    if (!result.endsWith("/"))
-        result += "/";
-    return result;
 }
 
 QString Private::DefaultProfile::downloadLocation() const
@@ -159,15 +98,20 @@ QString Private::DefaultProfile::downloadLocation() const
 SettingsPtr Private::DefaultProfile::applicationSettings(const QString &name) const
 {
 #if defined(Q_OS_WIN) || defined(Q_OS_MAC)
-    return SettingsPtr(new QSettings(QSettings::IniFormat, QSettings::UserScope, configurationName(), name));
+    return SettingsPtr(new QSettings(QSettings::IniFormat, QSettings::UserScope, profileName(), name));
 #else
-    return SettingsPtr(new QSettings(configurationName(), name));
+    return SettingsPtr(new QSettings(profileName(), name));
 #endif
 }
 
+QString Private::DefaultProfile::locationWithConfigurationName(QStandardPaths::StandardLocation location) const
+{
+    return QStandardPaths::writableLocation(location) + configurationSuffix();
+}
+
 Private::CustomProfile::CustomProfile(const QString &rootPath, const QString &configurationName)
     : Profile {configurationName}
-    , m_rootDirectory {QDir(rootPath).absoluteFilePath(this->configurationName())}
+    , m_rootDirectory {QDir(rootPath).absoluteFilePath(this->profileName())}
 {
 }
 

src/base/private/profile_p.h

@@ -32,6 +32,7 @@
 #define QBT_PROFILE_P_H
 
 #include <QDir>
+#include <QStandardPaths>
 #include "base/profile.h"
 
 namespace Private
@@ -48,13 +49,17 @@ namespace Private
 
         virtual ~Profile() = default;
 
-        QString configurationName() const;
+        /**
+         * @brief QCoreApplication::applicationName() with optional configuration name appended
+         */
+        QString profileName() const;
 
     protected:
         Profile(const QString &configurationName);
 
+        QString configurationSuffix() const;
     private:
-        QString m_configurationName;
+        QString m_configurationSuffix;
     };
 
     /// Default implementation. Takes paths from system
@@ -69,6 +74,15 @@ namespace Private
         QString dataLocation() const override;
         QString downloadLocation() const override;
         SettingsPtr applicationSettings(const QString &name) const override;
+
+    private:
+        /**
+         * @brief Standard path writable location for profile files
+         *
+         * @param location location kind
+         * @return QStandardPaths::writableLocation(location) / configurationName()
+         */
+        QString locationWithConfigurationName(QStandardPaths::StandardLocation location) const;
     };
 
     /// Custom tree: creates directories under the specified root directory

src/base/profile.cpp

@@ -90,9 +90,9 @@ QString Profile::location(SpecialFolder folder) const
     return result;
 }
 
-QString Profile::configurationName() const
+QString Profile::profileName() const
 {
-    return m_profileImpl->configurationName();
+    return m_profileImpl->profileName();
 }
 
 SettingsPtr Profile::applicationSettings(const QString &name) const

src/base/profile.h

@@ -63,7 +63,7 @@ public:
 
     /// Returns either default name for configuration file (QCoreApplication::applicationName())
     /// or the value, supplied via parameters
-    QString configurationName() const;
+    QString profileName() const;
 
     QString toPortablePath(const QString &absolutePath) const;
     QString fromPortablePath(const QString &portablePath) const;