Add renaming filename patterns

app/src/main/java/org/schabi/newpipe/download/DownloadDialog.java

@@ -27,6 +27,7 @@ import org.schabi.newpipe.extractor.stream_info.StreamInfo;
 import org.schabi.newpipe.extractor.stream_info.VideoStream;
 import org.schabi.newpipe.fragments.detail.SpinnerToolbarAdapter;
 import org.schabi.newpipe.settings.NewPipeSettings;
+import org.schabi.newpipe.util.FilenameUtils;
 import org.schabi.newpipe.util.PermissionHelper;
 import org.schabi.newpipe.util.ThemeHelper;
 import org.schabi.newpipe.util.Utils;
@@ -107,7 +108,7 @@ public class DownloadDialog extends DialogFragment implements RadioGroup.OnCheck
     public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);
         nameEditText = ((EditText) view.findViewById(R.id.file_name));
-        nameEditText.setText(createFileName(currentInfo.title));
+        nameEditText.setText(FilenameUtils.createFilename(getContext(), currentInfo.title));
         selectedAudioIndex = Utils.getPreferredAudioFormat(getContext(), currentInfo.audio_streams);
 
         streamsSpinner = (Spinner) view.findViewById(R.id.quality_spinner);
@@ -252,30 +253,12 @@ public class DownloadDialog extends DialogFragment implements RadioGroup.OnCheck
         }
     }
 
-    /**
-     * #143 #44 #42 #22: make sure that the filename does not contain illegal chars.
-     * This should fix some of the "cannot download" problems.
-     */
-    private String createFileName(String fileName) {
-        // from http://eng-przemelek.blogspot.de/2009/07/how-to-create-valid-file-name.html
-
-        List<String> forbiddenCharsPatterns = new ArrayList<>();
-        forbiddenCharsPatterns.add("[:]+"); // Mac OS, but it looks that also Windows XP
-        forbiddenCharsPatterns.add("[\\*\"/\\\\\\[\\]\\:\\;\\|\\=\\,]+");  // Windows
-        forbiddenCharsPatterns.add("[^\\w\\d\\.]+");  // last chance... only latin letters and digits
-        String nameToTest = fileName;
-        for (String pattern : forbiddenCharsPatterns) {
-            nameToTest = nameToTest.replaceAll(pattern, "_");
-        }
-        return nameToTest;
-    }
-
 
     private void downloadSelected() {
         String url, location;
 
         String fileName = nameEditText.getText().toString().trim();
-        if (fileName.isEmpty()) fileName = createFileName(currentInfo.title);
+        if (fileName.isEmpty()) fileName = FilenameUtils.createFilename(getContext(), currentInfo.title);
 
         boolean isAudio = radioVideoAudioGroup.getCheckedRadioButtonId() == R.id.audio_button;
         url = isAudio ? currentInfo.audio_streams.get(selectedAudioIndex).url : sortedStreamVideosList.get(selectedVideoIndex).url;

app/src/main/java/org/schabi/newpipe/util/FilenameUtils.java

@@ -0,0 +1,39 @@
+package org.schabi.newpipe.util;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.preference.PreferenceManager;
+
+import org.schabi.newpipe.R;
+
+import java.util.regex.Pattern;
+
+public class FilenameUtils {
+
+    /**
+     * #143 #44 #42 #22: make sure that the filename does not contain illegal chars.
+     * @param context the context to retrieve strings and preferences from
+     * @param title the title to create a filename from
+     * @return the filename
+     */
+    public static String createFilename(Context context, String title) {
+        SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
+        final String key = context.getString(R.string.settings_file_charset_key);
+        final String value = sharedPreferences.getString(key, context.getString(R.string.default_file_charset_value));
+        Pattern pattern = Pattern.compile(value);
+
+        final String replacementChar = sharedPreferences.getString(context.getString(R.string.settings_file_replacement_character_key), "_");
+        return createFilename(title, pattern, replacementChar);
+    }
+
+    /**
+     * Create a valid filename
+     * @param title the title to create a filename from
+     * @param invalidCharacters patter matching invalid characters
+     * @param replacementChar the replacement
+     * @return the filename
+     */
+    private static String createFilename(String title, Pattern invalidCharacters, String replacementChar) {
+        return title.replaceAll(invalidCharacters.pattern(), replacementChar);
+    }
+}

app/src/main/res/values/settings_keys.xml

@@ -232,4 +232,22 @@
     </string-array>
     <string name="show_age_restricted_content" translatable="false">show_age_restricted_content</string>
     <string name="use_tor_key" translatable="false">use_tor</string>
+
+    <string name="settings_file_charset_key" translatable="false">file_rename</string>
+    <string name="settings_file_replacement_character_key" translatable="false">file_replacement_character</string>
+    <string name="settings_file_replacement_character_default_value" translatable="false">_</string>
+
+    <string-array
+        translatable="false"
+        name="settings_filename_charset">
+        <item>@string/charset_letters_and_digits_value</item>
+        <item>@string/charset_most_special_characters_value</item>
+    </string-array>
+
+    <string-array name="settings_filename_charset_name">
+        <item>@string/charset_letters_and_digits</item>
+        <item>@string/charset_most_special_characters</item>
+    </string-array>
+    
+    <string name="default_file_charset_value" translatable="false">@string/charset_most_special_characters</string>
 </resources>

app/src/main/res/values/strings.xml

@@ -190,6 +190,18 @@
 
     <!-- End of GigaGet's Strings -->
 
+    <!-- Downloads -->
+    <string name="settings_category_downloads" translatable="false">settings_category_downloads</string>
+    <string name="settings_category_downloads_title">Download</string>
+    <string name="settings_file_charset_title">Allowed characters in filenames</string>
+    <string name="settings_file_replacement_character_summary">Invalid characters are replaced with this value</string>
+    <string name="settings_file_replacement_character_title">Replacement character</string>
+
+    <string name="charset_letters_and_digits_value" translatable="false">[^\w\d]+</string>
+    <string name="charset_most_special_characters_value" translatable="false">[\n\r|\\?*&lt;":&gt;/']+</string>
+    <string name="charset_letters_and_digits">Letters and digits</string>
+    <string name="charset_most_special_characters">Most special characters</string>
+
     <!-- About -->
     <string name="title_activity_about">About NewPipe</string>
     <string name="action_settings">Settings</string>

app/src/main/res/xml/settings.xml

@@ -133,10 +133,10 @@
 
     </PreferenceCategory>
 
+
     <PreferenceCategory
-        android:key="@string/settings_category_other"
+        android:key="@string/settings_category_downloads"
-        android:textAllCaps="true"
+        android:title="@string/settings_category_downloads_title">
-        android:title="@string/settings_category_other_title">
 
         <Preference
             android:dialogTitle="@string/download_path_dialog_title"
@@ -150,6 +150,26 @@
             android:summary="@string/download_path_audio_summary"
             android:title="@string/download_path_audio_title"/>
 
+        <ListPreference
+            android:key="@string/settings_file_charset_key"
+            android:summary="%s"
+            android:defaultValue="@string/default_file_charset_value"
+            android:title="@string/settings_file_charset_title"
+            android:entryValues="@array/settings_filename_charset"
+            android:entries="@array/settings_filename_charset_name" />
+
+        <EditTextPreference
+            android:key="@string/settings_file_replacement_character_key"
+            android:summary="@string/settings_file_replacement_character_summary"
+            android:defaultValue="@string/settings_file_replacement_character_default_value"
+            android:title="@string/settings_file_replacement_character_title" />
+    </PreferenceCategory>
+
+    <PreferenceCategory
+        android:key="@string/settings_category_other"
+        android:textAllCaps="true"
+        android:title="@string/settings_category_other_title">
+
         <CheckBoxPreference
             android:defaultValue="false"
             android:key="@string/autoplay_through_intent_key"