kiwix/kiwix-android
1
0
Fork 0
mirror of https://github.com/kiwix/kiwix-android.git synced 2025-09-16 02:48:08 -04:00
Code Issues Packages Projects Releases Wiki Activity

#1664 Add a cache to avoid checking filesystem too often (might be slow) - save result to hidden file

Browse Source
This commit is contained in:
Sean Mac Gillicuddy 2020-09-10 12:05:30 +01:00
parent 01a6f186b1
commit adeb6ee2ca
1 changed files with 22 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
app/src/main/java/org/kiwix/kiwixmobile/zim_manager/FileWritingFileSystemChecker.kt
View File

@ -21,27 +21,45 @@ package org.kiwix.kiwixmobile.zim_manager
import android.util.Log
import org.kiwix.kiwixmobile.zim_manager.FileSystemCapability.CANNOT_WRITE_4GB
import org.kiwix.kiwixmobile.zim_manager.FileSystemCapability.CAN_WRITE_4GB
import org.kiwix.kiwixmobile.zim_manager.FileSystemCapability.INCONCLUSIVE
import java.io.File
import java.io.RandomAccessFile
class FileWritingFileSystemChecker : FileSystemChecker {
override fun checkFilesystemSupports4GbFiles(path: String): FileSystemCapability {
with(File("$path/large_file_test.txt")) {
val resultFile = File("$path/.file_writing_result")
if (resultFile.exists()) {
when (val capability = readCapability(resultFile)) {
CAN_WRITE_4GB,
CANNOT_WRITE_4GB -> return capability
}
}
return with(File("$path/large_file_test.txt"), {
deleteIfExists()
try {
RandomAccessFile(this.path, "rw").use {
it.setLength(Fat32Checker.FOUR_GIGABYTES_IN_BYTES)
return@checkFilesystemSupports4GbFiles CAN_WRITE_4GB
CAN_WRITE_4GB.alsoSaveTo(resultFile)
}
} catch (e: Exception) {
e.printStackTrace()
Log.d("Fat32Checker", e.message)
return@checkFilesystemSupports4GbFiles CANNOT_WRITE_4GB
CANNOT_WRITE_4GB.alsoSaveTo(resultFile)
} finally {
deleteIfExists()
}
}
})
}
private fun readCapability(resultFile: File) =
try {
FileSystemCapability.valueOf(resultFile.readText())
} catch (illegalArgumentException: IllegalArgumentException) {
INCONCLUSIVE
}
private fun FileSystemCapability.alsoSaveTo(resultFile: File) =
also { resultFile.writeText(name) }
}
private fun File.deleteIfExists() {