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- package netscape.ldap.util;
-
- public final class MimeBase64Decoder extends MimeEncoder {
- private byte[] token = new byte[4];
- private byte[] bytes = new byte[3];
- private int token_length;
- private static final byte NUL = 127;
- private static final byte EOF = 126;
- private static final byte[] map = new byte[]{127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 62, 127, 127, 127, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 127, 127, 127, 126, 127, 127, 127, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 127, 127, 127, 127, 127, 127, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127};
-
- private final void decode_token(ByteBuf var1) {
- int var2 = map[this.token[0]] << 18 | map[this.token[1]] << 12 | map[this.token[2]] << 6 | map[this.token[3]];
- this.bytes[0] = (byte)(255 & var2 >> 16);
- this.bytes[1] = (byte)(255 & var2 >> 8);
- this.bytes[2] = (byte)(255 & var2);
- var1.append(this.bytes);
- }
-
- private final void decode_final_token(ByteBuf var1) {
- byte var2 = map[this.token[0]];
- byte var3 = map[this.token[1]];
- byte var4 = map[this.token[2]];
- byte var5 = map[this.token[3]];
- int var6 = 0;
- if (var2 == 126) {
- var2 = 0;
- ++var6;
- }
-
- if (var3 == 126) {
- var3 = 0;
- ++var6;
- }
-
- if (var4 == 126) {
- var4 = 0;
- ++var6;
- }
-
- if (var5 == 126) {
- var5 = 0;
- ++var6;
- }
-
- int var7 = var2 << 18 | var3 << 12 | var4 << 6 | var5;
- var1.append((byte)(var7 >> 16));
- if (var6 <= 1) {
- var1.append((byte)(var7 >> 8 & 255));
- if (var6 == 0) {
- var1.append((byte)(var7 & 255));
- }
- }
-
- }
-
- public final void translate(ByteBuf var1, ByteBuf var2) {
- if (this.token != null) {
- byte[] var3 = var1.toBytes();
- int var4 = var1.length();
-
- for(int var5 = 0; var5 < var4; ++var5) {
- byte var6 = var3[var5];
- int var7 = var6 & 255;
- byte var8 = map[var7];
- if (var8 != 127) {
- this.token[this.token_length++] = var6;
- }
-
- if (var8 == 126) {
- this.eof(var2);
- return;
- }
-
- if (this.token_length == 4) {
- this.decode_token(var2);
- this.token_length = 0;
- }
- }
-
- }
- }
-
- public final void eof(ByteBuf var1) {
- if (this.token != null && this.token_length != 0) {
- while(this.token_length < 4) {
- this.token[this.token_length++] = 61;
- }
-
- this.decode_final_token(var1);
- }
-
- this.token_length = 0;
- this.token = new byte[4];
- this.bytes = new byte[3];
- }
- }
-