Eyre_S/Coeur-Morny-Cono
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添加 av/bv conv

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A.C.Sukazyo Eyre 2022-10-18 01:40:59 +08:00
parent 5bb19095c8
commit 3ec69df9b8
Signed by: Eyre_S
GPG Key ID: C17CE40291207874
3 changed files with 69 additions and 1 deletions
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2
src/main/java/cc/sukazyo/cono/morny/GradleProjectConfigures.java
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@ -6,5 +6,5 @@ package cc.sukazyo.cono.morny;
public class GradleProjectConfigures {
public static final String VERSION = "0.8.0.8";
public static final String CODENAME = "putian";
public static final long COMPILE_TIMESTAMP = 1665999835121L;
public static final long COMPILE_TIMESTAMP = 1666028272898L;
}

38
src/main/java/cc/sukazyo/cono/morny/util/BiliTool.java Normal file
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@ -0,0 +1,38 @@
package cc.sukazyo.cono.morny.util;
import javax.annotation.Nonnegative;
import javax.annotation.Nonnull;
import java.util.HashMap;
import java.util.Map;
public class BiliTool {
private static final long V_CONV_XOR = 177451812L;
private static final long V_CONV_ADD = 8728348608L;
private static final char[] BV_TABLE = "fZodR9XQDSUm21yCkr6zBqiveYah8bt4xsWpHnJE7jL5VG3guMTKNPAwcF".toCharArray();
private static final int TABLE_INT = BV_TABLE.length;
private static final Map<Character, Integer> BV_TABLE_REVERSED = new HashMap<>();
static { for (int i = 0; i < BV_TABLE.length; i++) BV_TABLE_REVERSED.put(BV_TABLE[i], i); }
private static final char[] BV_TEMPLATE = "1 4 1 7 ".toCharArray();
private static final int[] BV_TEMPLATE_FILTER = new int[]{9, 8, 1, 6, 2, 4};
@Nonnegative
public static long toAv (@Nonnull String bv) {
long av = 0;
for (int i = 0; i < BV_TEMPLATE_FILTER.length; i++) {
av += BV_TABLE_REVERSED.get(bv.charAt(BV_TEMPLATE_FILTER[i])) * Math.pow(TABLE_INT,i);
}
return (av-V_CONV_ADD)^V_CONV_XOR;
}
@Nonnull
public static String toBv (@Nonnegative long av) {
av = (av^V_CONV_XOR)+V_CONV_ADD;
final char[] bv = BV_TEMPLATE.clone();
for (int i = 0; i < BV_TEMPLATE_FILTER.length; i++) {
bv[BV_TEMPLATE_FILTER[i]] = BV_TABLE[(int)(Math.floor(av/(Math.pow(TABLE_INT, i)))%TABLE_INT)];
}
return String.copyValueOf(bv);
}
}

30
src/test/java/cc/sukazyo/cono/morny/util/TestBiliTool.java Normal file
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@ -0,0 +1,30 @@
package cc.sukazyo.cono.morny.util;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.CsvSource;
import static cc.sukazyo.cono.morny.util.BiliTool.*;
public class TestBiliTool {
private static final String AV_BV_DATA_CSV = """
17x411w7KC, 170001
1Q541167Qg, 455017605
1mK4y1C7Bz, 882584971
1T24y197V2, 688730800
""";
@ParameterizedTest
@CsvSource(textBlock = AV_BV_DATA_CSV)
void testAvToBv (String bv, int av) {
Assertions.assertEquals(bv, toBv(av));
}
@ParameterizedTest
@CsvSource(textBlock = AV_BV_DATA_CSV)
void testBvToAv (String bv, int av) {
Assertions.assertEquals(av, toAv(bv));
}
}