Bug: Can't import many files with CJK filenames - filename too long

[david-allison]

Non-crash, but annoying

https://couchdb.ankidroid.org/acralyzer/_design/acralyzer/index.html#/report-details/02a88253-f48e-4a3b-8119-c1e578ca495d

44 character Chinese filename gets expanded to 291 character URLEncoded filename which fails the import. Filename removed for user privacy.

ImportUtils/ Could not copy file to /data/user/0/com.ichi2.anki/cache/[FileName]
java.nio.file.FileSystemException: /data/user/0/com.ichi2.anki/cache/[FileName]: File name too long
at sun.nio.fs.UnixFileSystemProvider.implDelete(UnixFileSystemProvider.java:244)
at sun.nio.fs.AbstractFileSystemProvider.deleteIfExists(AbstractFileSystemProvider.java:108)
at java.nio.file.Files.deleteIfExists(Files.java:1165)
at java.nio.file.Files.copy(Files.java:3004)
at com.ichi2.compat.CompatV26.copyFile(CompatV26.java:3)
at com.ichi2.utils.ImportUtils.copyFileToCache(ImportUtils.java:2)
at com.ichi2.utils.ImportUtils.handleContentProviderFile(ImportUtils.java:15)
at com.ichi2.utils.ImportUtils.handleFileImportInternal(ImportUtils.java:11)
at com.ichi2.utils.ImportUtils.handleFileImport(ImportUtils.java:4)
at com.ichi2.anki.IntentHandler.onCreate(IntentHandler.java:11)
at android.app.Activity.performCreate(Activity.java:8066)
at android.app.Activity.performCreate(Activity.java:8054)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1313)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3733)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3939)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:91)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:149)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:103)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2373)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:213)
at android.app.ActivityThread.main(ActivityThread.java:8147)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:513)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1101)

java.nio.file.FileSystemException: /data/user/0/com.ichi2.anki/cache/[FileName]: File name too long
at sun.nio.fs.UnixFileSystemProvider.implDelete(UnixFileSystemProvider.java:244)
at sun.nio.fs.AbstractFileSystemProvider.deleteIfExists(AbstractFileSystemProvider.java:108)
at java.nio.file.Files.deleteIfExists(Files.java:1165)
at java.nio.file.Files.copy(Files.java:3004)
at com.ichi2.compat.CompatV26.copyFile(CompatV26.java:3)
at com.ichi2.utils.ImportUtils.copyFileToCache(ImportUtils.java:2)
at com.ichi2.utils.ImportUtils.handleContentProviderFile(ImportUtils.java:15)
at com.ichi2.utils.ImportUtils.handleFileImportInternal(ImportUtils.java:11)
at com.ichi2.utils.ImportUtils.handleFileImport(ImportUtils.java:4)
at com.ichi2.anki.IntentHandler.onCreate(IntentHandler.java:11)
at android.app.Activity.performCreate(Activity.java:8066)
at android.app.Activity.performCreate(Activity.java:8054)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1313)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3733)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3939)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:91)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:149)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:103)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2373)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:213)
at android.app.ActivityThread.main(ActivityThread.java:8147)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:513)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1101)

[david-allison]

Cause: ed06954#diff-8eefa7f7b20c936f007c934965238520R58

[david-allison]

Added to FAQ: https://github.com/ankidroid/Anki-Android/wiki/FAQ#error-copyfiletocache-failed-possibly-out-of-storage-space

[david-allison]

Reproduced with 好好好好好好好好好好好好好好好好好好好好好好好好好好好好好好好好好好好好好好好好好好好好.apkg