forked from openrs2/openrs2
This is useful for checking the CRC-32 checksum of files used by the loader. It outputs the checksum in signed decimal format, which is the format used in the file name suffixes in the loader (e.g. unpackclass_-1911426584.pack). Signed-off-by: Graham <gpe@openrs2.dev>bzip2
parent
c849c5ad46
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plugins { |
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`maven-publish` |
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application |
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kotlin("jvm") |
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} |
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application { |
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mainClassName = "dev.openrs2.crc32.Crc32CommandKt" |
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} |
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dependencies { |
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api(project(":cli")) |
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} |
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publishing { |
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publications.create<MavenPublication>("maven") { |
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from(components["java"]) |
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pom { |
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packaging = "jar" |
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name.set("OpenRS2 CRC-32") |
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description.set( |
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""" |
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A tool for calculating the CRC-32 checksum of a file. |
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""".trimIndent() |
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) |
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} |
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} |
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} |
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package dev.openrs2.crc32 |
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import com.github.ajalt.clikt.core.CliktCommand |
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import com.github.ajalt.clikt.parameters.options.option |
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import dev.openrs2.cli.defaultStdin |
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import dev.openrs2.cli.inputStream |
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import java.util.zip.CRC32 |
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fun main(args: Array<String>) = Crc32Command().main(args) |
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class Crc32Command : CliktCommand(name = "crc32") { |
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private val input by option().inputStream().defaultStdin() |
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override fun run() { |
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val crc = CRC32() |
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input.use { input -> |
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val bytes = ByteArray(4096) |
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while (true) { |
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val len = input.read(bytes) |
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if (len == -1) { |
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break |
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} |
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crc.update(bytes, 0, len) |
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} |
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} |
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echo(crc.value.toInt()) |
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} |
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} |
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