nixpkgs/pkgs/desktops/deepin/dde-file-manager/dde-file-manager.fix-mime-cache-paths.patch

From 29f4ad88e2294ae70b10180e7361d135c4e5c896 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jos=C3=A9=20Romildo=20Malaquias?= <malaquias@gmail.com>
Date: Mon, 13 May 2019 00:09:42 -0300
Subject: [PATCH 2/2] Use XDG to look for mime cache

---
 .../shutil/mimesappsmanager.cpp               | 230 ++++++++++--------
 .../shutil/mimesappsmanager.h                 |   6 +-
 2 files changed, 125 insertions(+), 111 deletions(-)

diff --git a/dde-file-manager-lib/shutil/mimesappsmanager.cpp b/dde-file-manager-lib/shutil/mimesappsmanager.cpp
index c9e53630..7a21df51 100644
--- a/dde-file-manager-lib/shutil/mimesappsmanager.cpp
+++ b/dde-file-manager-lib/shutil/mimesappsmanager.cpp
@@ -552,14 +552,20 @@ QString MimesAppsManager::getMimeAppsCacheFile()
     return QString("%1/%2").arg(DFMStandardPaths::location(DFMStandardPaths::CachePath), "MimeApps.json");
 }
 
-QString MimesAppsManager::getMimeInfoCacheFilePath()
+QStringList MimesAppsManager::getMimeInfoCacheFilePath()
 {
-    return "/usr/share/applications/mimeinfo.cache";
+    QStringList paths;
+    for (const QString dir : getMimeInfoCacheFileRootPath() )
+       paths.append(dir + QDir::separator() + "mimeinfo.cache");
+    qDebug() << "getMimeInfoCacheFilePath: " << paths;
+    return paths;
 }
 
-QString MimesAppsManager::getMimeInfoCacheFileRootPath()
+QStringList MimesAppsManager::getMimeInfoCacheFileRootPath()
 {
-    return "/usr/share/applications";
+    QStringList paths = QStandardPaths::standardLocations(QStandardPaths::ApplicationsLocation);
+    qDebug() << "getMimeInfoCacheFileRootPath: " << paths;
+    return paths;
 }
 
 QString MimesAppsManager::getDesktopFilesCacheFile()
@@ -574,23 +580,27 @@ QString MimesAppsManager::getDesktopIconsCacheFile()
 
 QStringList MimesAppsManager::getDesktopFiles()
 {
-      QStringList desktopFiles;
+    QStringList desktopFiles;
 
-      foreach (QString desktopFolder, getApplicationsFolders()) {
-          QDirIterator it(desktopFolder, QStringList("*.desktop"),
-                          QDir::Files | QDir::NoDotAndDotDot,
-                          QDirIterator::Subdirectories);
-          while (it.hasNext()) {
-            it.next();
-            desktopFiles.append(it.filePath());
-          }
-      }
-      return desktopFiles;
+    foreach (QString desktopFolder, getApplicationsFolders()) {
+        QDirIterator it(desktopFolder, QStringList("*.desktop"),
+                        QDir::Files | QDir::NoDotAndDotDot,
+                        QDirIterator::Subdirectories);
+        while (it.hasNext()) {
+          it.next();
+          desktopFiles.append(it.filePath());
+        }
+    }
+    return desktopFiles;
 }
 
-QString MimesAppsManager::getDDEMimeTypeFile()
+QStringList MimesAppsManager::getDDEMimeTypeFile()
 {
-    return QString("%1/%2/%3").arg(getMimeInfoCacheFileRootPath(), "deepin", "dde-mimetype.list");
+    QStringList paths;
+    for (const QString path : getMimeInfoCacheFileRootPath())
+       paths.append(QString("%1/%2/%3").arg(path, "deepin", "dde-mimetype.list"));
+    qDebug() << "getDDEMimeTypeFile: " << paths;
+    return paths;
 }
 
 QMap<QString, DesktopFile> MimesAppsManager::getDesktopObjs()
@@ -663,124 +673,128 @@ void MimesAppsManager::initMimeTypeApps()
         MimeApps.insert(key, orderApps);
     }
 
-    //check mime apps from cache
-    QFile f(getMimeInfoCacheFilePath());
-    if(!f.open(QIODevice::ReadOnly)){
-        qDebug () << "failed to read mime info cache file:" << f.errorString();
-        return;
-    }
-
     QStringList audioDesktopList;
     QStringList imageDeksopList;
     QStringList textDekstopList;
     QStringList videoDesktopList;
 
-    while (!f.atEnd()) {
-        QString data = f.readLine();
-        QString _desktops = data.split("=").last();
-        QString mimeType = data.split("=").first();
-        QStringList desktops = _desktops.split(";");
-
-        foreach (const QString desktop, desktops) {
-            if(desktop.isEmpty() || audioDesktopList.contains(desktop))
-                continue;
+    //check mime apps from cache
+    for (const QString path : getMimeInfoCacheFilePath()) {
+        QFile f(path);
+        if(!f.open(QIODevice::ReadOnly)){
+            qDebug () << "failed to read mime info cache file:" << f.errorString();
+            return;
+        }
 
-            if(mimeType.startsWith("audio")){
-                if(!audioDesktopList.contains(desktop))
-                    audioDesktopList << desktop;
-            } else if(mimeType.startsWith("image")){
-                if(!imageDeksopList.contains(desktop))
-                    imageDeksopList << desktop;
-            } else if(mimeType.startsWith("text")){
-                if(!textDekstopList.contains(desktop))
-                    textDekstopList << desktop;
-            } else if(mimeType.startsWith("video")){
-                if(!videoDesktopList.contains(desktop))
-                    videoDesktopList << desktop;
+        while (!f.atEnd()) {
+            QString data = f.readLine();
+            QString _desktops = data.split("=").last();
+            QString mimeType = data.split("=").first();
+            QStringList desktops = _desktops.split(";");
+
+            foreach (const QString desktop, desktops) {
+                if(desktop.isEmpty() || audioDesktopList.contains(desktop))
+                    continue;
+
+                if(mimeType.startsWith("audio")){
+                    if(!audioDesktopList.contains(desktop))
+                        audioDesktopList << desktop;
+                } else if(mimeType.startsWith("image")){
+                    if(!imageDeksopList.contains(desktop))
+                        imageDeksopList << desktop;
+                } else if(mimeType.startsWith("text")){
+                    if(!textDekstopList.contains(desktop))
+                        textDekstopList << desktop;
+                } else if(mimeType.startsWith("video")){
+                    if(!videoDesktopList.contains(desktop))
+                        videoDesktopList << desktop;
+                }
             }
         }
+        f.close();
     }
-    f.close();
 
-    const QString mimeInfoCacheRootPath = getMimeInfoCacheFileRootPath();
-    foreach (QString desktop, audioDesktopList) {
-        const QString path = QString("%1/%2").arg(mimeInfoCacheRootPath,desktop);
-        if(!QFile::exists(path))
-            continue;
-        DesktopFile df(path);
-        AudioMimeApps.insert(path, df);
-    }
+    for (const QString mimeInfoCacheRootPath : getMimeInfoCacheFileRootPath()) {
+        foreach (QString desktop, audioDesktopList) {
+            const QString path = QString("%1/%2").arg(mimeInfoCacheRootPath,desktop);
+            if(!QFile::exists(path))
+                continue;
+            DesktopFile df(path);
+            AudioMimeApps.insert(path, df);
+        }
 
-    foreach (QString desktop, imageDeksopList) {
-        const QString path = QString("%1/%2").arg(mimeInfoCacheRootPath,desktop);
-        if(!QFile::exists(path))
-            continue;
-        DesktopFile df(path);
-        ImageMimeApps.insert(path, df);
-    }
+        foreach (QString desktop, imageDeksopList) {
+            const QString path = QString("%1/%2").arg(mimeInfoCacheRootPath,desktop);
+            if(!QFile::exists(path))
+                continue;
+            DesktopFile df(path);
+            ImageMimeApps.insert(path, df);
+        }
 
-    foreach (QString desktop, textDekstopList) {
-        const QString path = QString("%1/%2").arg(mimeInfoCacheRootPath,desktop);
-        if(!QFile::exists(path))
-            continue;
-        DesktopFile df(path);
-        TextMimeApps.insert(path, df);
-    }
+        foreach (QString desktop, textDekstopList) {
+            const QString path = QString("%1/%2").arg(mimeInfoCacheRootPath,desktop);
+            if(!QFile::exists(path))
+                continue;
+            DesktopFile df(path);
+            TextMimeApps.insert(path, df);
+        }
 
-    foreach (QString desktop, videoDesktopList) {
-        const QString path = QString("%1/%2").arg(mimeInfoCacheRootPath,desktop);
-        if(!QFile::exists(path))
-            continue;
-        DesktopFile df(path);
-        VideoMimeApps.insert(path, df);
+        foreach (QString desktop, videoDesktopList) {
+            const QString path = QString("%1/%2").arg(mimeInfoCacheRootPath,desktop);
+            if(!QFile::exists(path))
+                continue;
+            DesktopFile df(path);
+            VideoMimeApps.insert(path, df);
+        }
     }
-
     return;
 }
 
 void MimesAppsManager::loadDDEMimeTypes()
 {
-    QSettings settings(getDDEMimeTypeFile(), QSettings::IniFormat);
-    qDebug() << settings.childGroups();
+    for (const QString path : getDDEMimeTypeFile()) {
+        QSettings settings(path, QSettings::IniFormat);
+        qDebug() << settings.childGroups();
 
-    QFile file(getDDEMimeTypeFile());
-    if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
-        return;
-    }
+        QFile file(path);
+        if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
+            continue;
+        }
+
+        // Read propeties
+        QTextStream in(&file);
+        QString desktopKey;
+        while (!in.atEnd()) {
 
-    // Read propeties
-    QTextStream in(&file);
-    QString desktopKey;
-    while (!in.atEnd()) {
+          // Read new line
+          QString line = in.readLine();
 
-      // Read new line
-      QString line = in.readLine();
+          // Skip empty line or line with invalid format
+          if (line.trimmed().isEmpty()) {
+            continue;
+          }
 
-      // Skip empty line or line with invalid format
-      if (line.trimmed().isEmpty()) {
-        continue;
-      }
+          // Read group
+          // NOTE: symbols '[' and ']' can be found not only in group names, but
+          // only group can start with '['
 
-      // Read group
-      // NOTE: symbols '[' and ']' can be found not only in group names, but
-      // only group can start with '['
+          if (line.trimmed().startsWith("[") && line.trimmed().endsWith("]")) {
+                QString tmp = line.trimmed().replace("[", "").replace("]", "");
+                desktopKey = tmp;
+                continue;
+          }
 
-      if (line.trimmed().startsWith("[") && line.trimmed().endsWith("]")) {
-            QString tmp = line.trimmed().replace("[", "").replace("]", "");
-            desktopKey = tmp;
-            continue;
-      }
-
-      // If we are in correct group and line contains assignment then read data
-      int first_equal = line.indexOf('=');
-      if (!desktopKey.isEmpty() && first_equal >= 0) {
-            QString value = line.mid(first_equal + 1);
-            QStringList mimetypes = value.split(";");
-            DDE_MimeTypes.insert(desktopKey, mimetypes);
-            desktopKey.clear();
+          // If we are in correct group and line contains assignment then read data
+          int first_equal = line.indexOf('=');
+          if (!desktopKey.isEmpty() && first_equal >= 0) {
+                QString value = line.mid(first_equal + 1);
+                QStringList mimetypes = value.split(";");
+                DDE_MimeTypes.insert(desktopKey, mimetypes);
+                desktopKey.clear();
+            }
         }
+        file.close();
     }
-    file.close();
 }
 
 bool MimesAppsManager::lessByDateTime(const QFileInfo &f1, const QFileInfo &f2)
diff --git a/dde-file-manager-lib/shutil/mimesappsmanager.h b/dde-file-manager-lib/shutil/mimesappsmanager.h
index 223c80aa..00a61302 100644
--- a/dde-file-manager-lib/shutil/mimesappsmanager.h
+++ b/dde-file-manager-lib/shutil/mimesappsmanager.h
@@ -101,12 +101,12 @@ public:
 
     static QStringList getApplicationsFolders();
     static QString getMimeAppsCacheFile();
-    static QString getMimeInfoCacheFilePath();
-    static QString getMimeInfoCacheFileRootPath();
+    static QStringList getMimeInfoCacheFilePath();
+    static QStringList getMimeInfoCacheFileRootPath();
     static QString getDesktopFilesCacheFile();
     static QString getDesktopIconsCacheFile();
     static QStringList getDesktopFiles();
-    static QString getDDEMimeTypeFile();
+    static QStringList getDDEMimeTypeFile();
     static QMap<QString, DesktopFile> getDesktopObjs();
     static void initMimeTypeApps();
     static void loadDDEMimeTypes();
-- 
2.21.0