commonMain.Bytes.kt Maven / Gradle / Ivy
/*
* Copyright 2019-2021 Mamoe Technologies and contributors.
*
* 此源代码的使用受 GNU AFFERO GENERAL PUBLIC LICENSE version 3 许可证的约束, 可以在以下链接找到该许可证.
* Use of this source code is governed by the GNU AGPLv3 license that can be found through the following link.
*
* https://github.com/mamoe/mirai/blob/master/LICENSE
*/
@file:JvmMultifileClass
@file:JvmName("MiraiUtils")
@file:Suppress("NOTHING_TO_INLINE")
package net.mamoe.mirai.utils
import kotlinx.io.core.ByteReadPacket
import kotlin.contracts.InvocationKind
import kotlin.contracts.contract
@JvmOverloads
public fun generateImageId(md5: ByteArray, format: String = "mirai"): String {
return """{${generateUUID(md5)}}.$format"""
}
@JvmOverloads
public fun generateImageIdFromResourceId(resourceId: String, format: String = "mirai"): String? {
// friend image id: /f8f1ab55-bf8e-4236-b55e-955848d7069f
// friend image id: / f8f1ab55-bf8e-4236-b55e-955848d7069f
// friend image id: /0000000000-3666252994-EFF4427CE3D27DB6B1D9A8AB72E7A29C
// friend image id: /0000000000-3666252994-EFF4427C E3D2 7DB6 B1D9 A8AB72E7A29C
// group image id: {EF42A82D-8DB6-5D0F-4F11-68961D8DA5CB}.png
if (resourceId.isNotEmpty()) {
if (resourceId[0] == '{') {
// {EF42A82D-8DB6-5D0F-4F11-68961D8DA5CB
if (resourceId.substringBefore('}', "").length == 37) {
return resourceId
}
}
}
val md5String = resourceId.substringAfterLast("-").substringAfter("/").takeIf { it.length == 32 }
?: resourceId.replace("-", "").substringAfter('/').takeIf { it.length == 32 }
?: return null
return "{${generateUUID(md5String)}}.$format"
}
public fun generateUUID(md5: ByteArray): String {
return "${md5[0, 3]}-${md5[4, 5]}-${md5[6, 7]}-${md5[8, 9]}-${md5[10, 15]}"
}
public fun generateUUID(md5String: String): String {
with(md5String) {
check(length == 32) { "it should md5String.length == 32" }
return "${substring(0, 8)}-${substring(8, 12)}-${substring(12, 16)}-${substring(16, 20)}-${substring(20, 32)}"
}
}
@JvmSynthetic
public operator fun ByteArray.get(rangeStart: Int, rangeEnd: Int): String = buildString {
for (it in rangeStart..rangeEnd) {
append(this@get[it].fixToString())
}
}
private fun Byte.fixToString(): String {
return when (val b = this.toInt() and 0xff) {
in 0..15 -> "0${this.toString(16).uppercase()}"
else -> b.toString(16).uppercase()
}
}
@OptIn(ExperimentalUnsignedTypes::class)
@JvmOverloads
@Suppress("DuplicatedCode") // false positive. foreach is not common to UByteArray and ByteArray
public fun ByteArray.toUHexString(
separator: String = " ",
offset: Int = 0,
length: Int = this.size - offset
): String {
this.checkOffsetAndLength(offset, length)
if (length == 0) {
return ""
}
val lastIndex = offset + length
return buildString(length * 2) {
[email protected] { index, it ->
if (index in offset until lastIndex) {
var ret = it.toUByte().toString(16).uppercase()
if (ret.length == 1) ret = "0$ret"
append(ret)
if (index < lastIndex - 1) append(separator)
}
}
}
}
public fun ByteArray.checkOffsetAndLength(offset: Int, length: Int) {
require(offset >= 0) { "offset shouldn't be negative: $offset" }
require(length >= 0) { "length shouldn't be negative: $length" }
require(offset + length <= this.size) { "offset ($offset) + length ($length) > array.size (${this.size})" }
}
@JvmOverloads
@Suppress("DuplicatedCode") // false positive. foreach is not common to UByteArray and ByteArray
public fun Array.toUHexString(
separator: String = " ",
offset: Int = 0,
length: Int = this.size - offset
): String {
require(offset >= 0) { "offset shouldn't be negative: $offset" }
require(length >= 0) { "length shouldn't be negative: $length" }
require(offset + length <= this.size) { "offset ($offset) + length ($length) > array.size (${this.size})" }
if (length == 0) {
return ""
}
val lastIndex = offset + length
return buildString(length * 2) {
[email protected] { index, it ->
if (index in offset until lastIndex) {
var ret = it.toUByte().toString(16).uppercase()
if (ret.length == 1) ret = "0$ret"
append(ret)
if (index < lastIndex - 1) append(separator)
}
}
}
}
@JvmOverloads
@Suppress("DuplicatedCode") // false positive. foreach is not common to UByteArray and ByteArray
public fun List.toUHexString(separator: String = " ", offset: Int = 0, length: Int = this.size - offset): String {
require(offset >= 0) { "offset shouldn't be negative: $offset" }
require(length >= 0) { "length shouldn't be negative: $length" }
require(offset + length <= this.size) { "offset ($offset) + length ($length) > array.size (${this.size})" }
if (length == 0) {
return ""
}
val lastIndex = offset + length
return buildString(length * 2) {
[email protected] { index, it ->
if (index in offset until lastIndex) {
var ret = it.toUByte().toString(16).uppercase()
if (ret.length == 1) ret = "0$ret"
append(ret)
if (index < lastIndex - 1) append(separator)
}
}
}
}
@JvmSynthetic
@Suppress("DuplicatedCode") // false positive. foreach is not common to UByteArray and ByteArray
@ExperimentalUnsignedTypes
public fun UByteArray.toUHexString(separator: String = " ", offset: Int = 0, length: Int = this.size - offset): String {
if (length == 0) {
return ""
}
val lastIndex = offset + length
return buildString(length * 2) {
[email protected] { index, it ->
if (index in offset until lastIndex) {
var ret = it.toByte().toUByte().toString(16).uppercase()
if (ret.length == 1) ret = "0$ret"
append(ret)
if (index < lastIndex - 1) append(separator)
}
}
}
}
public expect fun ByteArray.encodeBase64(): String
public expect fun String.decodeBase64(): ByteArray
public inline fun ByteArray.toReadPacket(offset: Int = 0, length: Int = this.size - offset): ByteReadPacket =
ByteReadPacket(this, offset = offset, length = length)
public inline fun ByteArray.read(t: ByteReadPacket.() -> R): R {
contract {
callsInPlace(t, InvocationKind.EXACTLY_ONCE)
}
return this.toReadPacket().withUse(t)
} © 2015 - 2024 Weber Informatics LLC | Privacy Policy