Created
April 11, 2018 15:36
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// Require kotlinx.coroutines jar as dependency, handle it yourself | |
import kotlinx.coroutines.experimental.async | |
import kotlinx.coroutines.experimental.launch | |
import kotlinx.coroutines.experimental.runBlocking | |
import java.io.FileOutputStream | |
import java.net.HttpURLConnection | |
import java.net.URL | |
import java.nio.channels.Channels | |
val base = "http://bms.bemaniso.ws/" | |
val file = { style: Int -> | |
"$base/files.php?group=iidx&style=$style" | |
} | |
fun main(args: Array<String>) { | |
val dest = "E:\\bmssong" | |
runBlocking { | |
(12..21).forEach { | |
val style = it | |
launch { | |
filterDlLink(get(file(it))).forEach { | |
launch { | |
download("$base$it", dest) | |
} | |
} | |
}.join() | |
} | |
} | |
} | |
fun filterDlLink(urls: List<String>) = urls | |
.filter { it.contains(".7z") } | |
.map { it.split(">")[0].split("\"")[1].replace("&", "&") } | |
suspend fun get(url: String): List<String> { | |
val conn = URL(url).openConnection() as HttpURLConnection | |
conn.requestMethod = "GET" | |
if (conn.responseCode != 200) { | |
println(conn.errorStream.bufferedReader().readLines().reduce { x, y -> x + y }) | |
} | |
return conn.inputStream.bufferedReader().readLines() | |
} | |
suspend fun download(url: String, dest: String) { | |
val conn = URL(url).openConnection() as HttpURLConnection | |
val fileName = url.split("&").filter { it.contains("file=") }[0].split("=")[1] | |
conn.requestMethod = "GET" | |
if (conn.responseCode != 200) { | |
println(conn.errorStream.bufferedReader().readLines().reduce { x, y -> x + y }) | |
} | |
Channels.newChannel(conn.inputStream.buffered()).use { | |
val rbc = it | |
FileOutputStream("$dest/$fileName").use { | |
it.channel.transferFrom(rbc, 0, Long.MAX_VALUE) | |
} | |
} | |
} |
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