124 lines
4.5 KiB
Java
124 lines
4.5 KiB
Java
package okio;
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import java.io.UnsupportedEncodingException;
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/* loaded from: classes2.dex */
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final class Base64 {
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private static final byte[] MAP = {65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 43, 47};
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private static final byte[] URL_MAP = {65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 45, 95};
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private Base64() {
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}
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public static byte[] decode(String str) {
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int i;
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char charAt;
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int length = str.length();
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while (length > 0 && ((charAt = str.charAt(length - 1)) == '=' || charAt == '\n' || charAt == '\r' || charAt == ' ' || charAt == '\t')) {
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length--;
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}
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byte[] bArr = new byte[(int) ((length * 6) / 8)];
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int i2 = 0;
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int i3 = 0;
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int i4 = 0;
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for (int i5 = 0; i5 < length; i5++) {
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char charAt2 = str.charAt(i5);
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if (charAt2 >= 'A' && charAt2 <= 'Z') {
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i = charAt2 - 'A';
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} else if (charAt2 >= 'a' && charAt2 <= 'z') {
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i = charAt2 - 'G';
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} else if (charAt2 >= '0' && charAt2 <= '9') {
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i = charAt2 + 4;
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} else if (charAt2 == '+' || charAt2 == '-') {
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i = 62;
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} else if (charAt2 == '/' || charAt2 == '_') {
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i = 63;
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} else {
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if (charAt2 != '\n' && charAt2 != '\r' && charAt2 != ' ' && charAt2 != '\t') {
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return null;
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}
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}
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i3 = (i3 << 6) | ((byte) i);
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i2++;
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if (i2 % 4 == 0) {
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int i6 = i4 + 1;
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bArr[i4] = (byte) (i3 >> 16);
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int i7 = i6 + 1;
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bArr[i6] = (byte) (i3 >> 8);
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bArr[i7] = (byte) i3;
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i4 = i7 + 1;
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}
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}
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int i8 = i2 % 4;
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if (i8 == 1) {
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return null;
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}
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if (i8 == 2) {
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bArr[i4] = (byte) ((i3 << 12) >> 16);
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i4++;
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} else if (i8 == 3) {
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int i9 = i3 << 6;
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int i10 = i4 + 1;
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bArr[i4] = (byte) (i9 >> 16);
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i4 = i10 + 1;
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bArr[i10] = (byte) (i9 >> 8);
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}
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if (i4 == bArr.length) {
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return bArr;
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}
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byte[] bArr2 = new byte[i4];
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System.arraycopy(bArr, 0, bArr2, 0, i4);
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return bArr2;
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}
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public static String encode(byte[] bArr) {
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return encode(bArr, MAP);
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}
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public static String encodeUrl(byte[] bArr) {
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return encode(bArr, URL_MAP);
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}
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private static String encode(byte[] bArr, byte[] bArr2) {
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byte[] bArr3 = new byte[((bArr.length + 2) / 3) * 4];
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int length = bArr.length - (bArr.length % 3);
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int i = 0;
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for (int i2 = 0; i2 < length; i2 += 3) {
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int i3 = i + 1;
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bArr3[i] = bArr2[(bArr[i2] & 255) >> 2];
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int i4 = i3 + 1;
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int i5 = i2 + 1;
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bArr3[i3] = bArr2[((bArr[i2] & 3) << 4) | ((bArr[i5] & 255) >> 4)];
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int i6 = i4 + 1;
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int i7 = (bArr[i5] & 15) << 2;
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int i8 = i2 + 2;
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bArr3[i4] = bArr2[i7 | ((bArr[i8] & 255) >> 6)];
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i = i6 + 1;
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bArr3[i6] = bArr2[bArr[i8] & 63];
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}
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int length2 = bArr.length % 3;
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if (length2 == 1) {
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int i9 = i + 1;
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bArr3[i] = bArr2[(bArr[length] & 255) >> 2];
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int i10 = i9 + 1;
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bArr3[i9] = bArr2[(bArr[length] & 3) << 4];
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bArr3[i10] = 61;
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bArr3[i10 + 1] = 61;
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} else if (length2 == 2) {
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int i11 = i + 1;
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bArr3[i] = bArr2[(bArr[length] & 255) >> 2];
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int i12 = i11 + 1;
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int i13 = (bArr[length] & 3) << 4;
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int i14 = length + 1;
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bArr3[i11] = bArr2[((bArr[i14] & 255) >> 4) | i13];
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bArr3[i12] = bArr2[(bArr[i14] & 15) << 2];
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bArr3[i12 + 1] = 61;
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}
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try {
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return new String(bArr3, "US-ASCII");
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} catch (UnsupportedEncodingException e) {
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throw new AssertionError(e);
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}
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}
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}
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