59 lines
1.4 KiB
Kotlin
59 lines
1.4 KiB
Kotlin
package audio.funkwhale.ffa.utils
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import android.content.Context
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import java.io.BufferedReader
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import java.io.File
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import java.nio.charset.Charset
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import java.security.MessageDigest
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object FFACache {
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private fun key(key: String): String {
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val md = MessageDigest.getInstance("SHA-1")
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val digest = md.digest(key.toByteArray(Charset.defaultCharset()))
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return digest.fold("") { acc, it -> acc + "%02x".format(it) }
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}
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fun set(context: Context?, key: String, value: String) {
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set(context, key, value.toByteArray())
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}
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fun set(context: Context?, key: String, value: ByteArray) {
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context?.let {
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with(File(it.cacheDir, key(key))) {
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writeBytes(value)
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}
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}
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}
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fun getLine(context: Context?, key: String): String? = get(context, key)?.let {
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val line = it.readLine()
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it.close()
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line
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}
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fun getLines(context: Context?, key: String): List<String>? = get(context, key)
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?.let { reader ->
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val lines = reader.readLines()
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reader.close()
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lines
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}
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fun delete(context: Context?, key: String) = context?.let {
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with(File(it.cacheDir, key(key))) {
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delete()
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}
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}
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private fun get(context: Context?, key: String): BufferedReader? = context?.let {
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try {
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with(File(it.cacheDir, key(key))) {
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bufferedReader()
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}
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} catch (e: Exception) {
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return null
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}
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}
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}
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