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author | Linnea Gräf <nea@nea.moe> | 2024-08-28 19:04:24 +0200 |
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committer | Linnea Gräf <nea@nea.moe> | 2024-08-28 19:04:24 +0200 |
commit | d2f240ff0ca0d27f417f837e706c781a98c31311 (patch) | |
tree | 0db7aff6cc14deaf36eed83889d59fd6b3a6f599 /src/main/kotlin/moe/nea/firmament/util/TemplateUtil.kt | |
parent | a6906308163aa3b2d18fa1dc1aa71ac9bbcc83ab (diff) | |
download | firmament-d2f240ff0ca0d27f417f837e706c781a98c31311.tar.gz firmament-d2f240ff0ca0d27f417f837e706c781a98c31311.tar.bz2 firmament-d2f240ff0ca0d27f417f837e706c781a98c31311.zip |
Refactor source layout
Introduce compat source sets and move all kotlin sources to the main directory
[no changelog]
Diffstat (limited to 'src/main/kotlin/moe/nea/firmament/util/TemplateUtil.kt')
-rw-r--r-- | src/main/kotlin/moe/nea/firmament/util/TemplateUtil.kt | 85 |
1 files changed, 0 insertions, 85 deletions
diff --git a/src/main/kotlin/moe/nea/firmament/util/TemplateUtil.kt b/src/main/kotlin/moe/nea/firmament/util/TemplateUtil.kt deleted file mode 100644 index 11100e9..0000000 --- a/src/main/kotlin/moe/nea/firmament/util/TemplateUtil.kt +++ /dev/null @@ -1,85 +0,0 @@ - - -package moe.nea.firmament.util - -import java.util.* -import kotlinx.serialization.DeserializationStrategy -import kotlinx.serialization.SerializationStrategy -import kotlinx.serialization.serializer -import moe.nea.firmament.Firmament - -object TemplateUtil { - - @JvmStatic - fun getTemplatePrefix(data: String): String? { - val decoded = maybeFromBase64Encoded(data) ?: return null - return decoded.replaceAfter("/", "", "").ifBlank { null } - } - - @JvmStatic - fun intoBase64Encoded(raw: String): String { - return Base64.getEncoder().encodeToString(raw.encodeToByteArray()) - } - - private val base64Alphabet = charArrayOf( - 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', - 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', - 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', - 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', - '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/', '=' - ) - - @JvmStatic - fun maybeFromBase64Encoded(raw: String): String? { - val raw = raw.trim() - if (raw.any { it !in base64Alphabet }) { - return null - } - return try { - Base64.getDecoder().decode(raw).decodeToString() - } catch (ex: Exception) { - null - } - } - - - /** - * Returns a base64 encoded string, truncated such that for all `x`, `x.startsWith(prefix)` implies - * `base64Encoded(x).startsWith(getPrefixComparisonSafeBase64Encoding(prefix))` - * (however, the inverse may not always be true). - */ - @JvmStatic - fun getPrefixComparisonSafeBase64Encoding(prefix: String): String { - val rawEncoded = - Base64.getEncoder().encodeToString(prefix.encodeToByteArray()) - .replace("=", "") - return rawEncoded.substring(0, rawEncoded.length - rawEncoded.length % 4) - } - - inline fun <reified T> encodeTemplate(sharePrefix: String, data: T): String = - encodeTemplate(sharePrefix, data, serializer()) - - fun <T> encodeTemplate(sharePrefix: String, data: T, serializer: SerializationStrategy<T>): String { - require(sharePrefix.endsWith("/")) - return intoBase64Encoded(sharePrefix + Firmament.json.encodeToString(serializer, data)) - } - - inline fun <reified T : Any> maybeDecodeTemplate(sharePrefix: String, data: String): T? = - maybeDecodeTemplate(sharePrefix, data, serializer()) - - fun <T : Any> maybeDecodeTemplate(sharePrefix: String, data: String, serializer: DeserializationStrategy<T>): T? { - require(sharePrefix.endsWith("/")) - val data = data.trim() - if (!data.startsWith(getPrefixComparisonSafeBase64Encoding(sharePrefix))) - return null - val decoded = maybeFromBase64Encoded(data) ?: return null - if (!decoded.startsWith(sharePrefix)) - return null - return try { - Firmament.json.decodeFromString<T>(serializer, decoded.substring(sharePrefix.length)) - } catch (e: Exception) { - null - } - } - -} |