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// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
/* +=======================================================================
* |
* | PlantUML : a free UML diagram generator
* |
* +=======================================================================
*
* (C) Copyright 2009-2024, Arnaud Roques
*
* Project Info: https://plantuml.com
*
* If you like this project or if you find it useful, you can support us at:
*
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*
* PlantUML is free software; you can redistribute it and/or modify it
* under the terms of the Revised BSD License.
*
* All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the University of California, Berkeley nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* messages are usually generated on welcome or error images and never on
* functional diagrams.
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* Images (whatever their format : PNG, SVG, EPS...) generated by running PlantUML
* are owned by the author of their corresponding sources code (that is, their
* textual description in PlantUML language). Those images are not covered by
* this BSD license.
*
* The generated images can then be used without any reference to the BSD license.
* It is not even necessary to stipulate that they have been generated with PlantUML,
* although this will be appreciated by the PlantUML team.
*
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* by any license, then the generated images are logically covered
* by the very same license.
*
* This is the IGY distribution (Install GraphViz by Yourself).
* You have to install GraphViz and to setup the GRAPHVIZ_DOT environment variable
* (see https://plantuml.com/graphviz-dot )
*
* Icons provided by OpenIconic : https://useiconic.com/open
* Archimate sprites provided by Archi : http://www.archimatetool.com
* Stdlib AWS provided by https://github.com/milo-minderbinder/AWS-PlantUML
* Stdlib Icons provided https://github.com/tupadr3/plantuml-icon-font-sprites
* ASCIIMathML (c) Peter Jipsen http://www.chapman.edu/~jipsen
* ASCIIMathML (c) David Lippman http://www.pierce.ctc.edu/dlippman
* CafeUndZopfli ported by Eugene Klyuchnikov https://github.com/eustas/CafeUndZopfli
* Brotli (c) by the Brotli Authors https://github.com/google/brotli
* Themes (c) by Brett Schwarz https://github.com/bschwarz/puml-themes
* Twemoji (c) by Twitter at https://twemoji.twitter.com/
*
*/
package com.plantuml.api.cheerpj;
import java.io.IOException;
import java.io.OutputStream;
public class Base64OutputStream extends OutputStream {
private final StringBuilder sb = new StringBuilder();
private int nb;
private byte a;
private byte b;
private byte c;
@Override
public void write(int data) throws IOException {
switch (nb) {
case 0:
a = (byte) (data & 0xFF);
nb = 1;
break;
case 1:
b = (byte) (data & 0xFF);
nb = 2;
break;
case 2:
c = (byte) (data & 0xFF);
nb = 0;
append3bytes(sb, a, b, c);
break;
}
}
@Override
public void close() throws IOException {
switch (nb) {
case 0:
break;
case 1:
append3bytes(sb, a, (byte) 0, (byte) 0);
break;
case 2:
append3bytes(sb, a, b, (byte) 0);
break;
}
super.close();
}
@Override
public String toString() {
return sb.toString();
}
private void append3bytes(StringBuilder sb, byte a, byte b, byte c) {
final int i0 = a & 0xff;
final int i1 = b & 0xff;
final int i2 = c & 0xff;
final int o0 = i0 >>> 2;
final int o1 = ((i0 & 3) << 4) | (i1 >>> 4);
final int o2 = ((i1 & 0xf) << 2) | (i2 >>> 6);
final int o3 = i2 & 0x3F;
sb.append(getBase(o0));
sb.append(getBase(o1));
sb.append(getBase(o2));
sb.append(getBase(o3));
}
private String getBase(int i) {
switch (i) {
case 0:
return "A";
case 1:
return "B";
case 2:
return "C";
case 3:
return "D";
case 4:
return "E";
case 5:
return "F";
case 6:
return "G";
case 7:
return "H";
case 8:
return "I";
case 9:
return "J";
case 10:
return "K";
case 11:
return "L";
case 12:
return "M";
case 13:
return "N";
case 14:
return "O";
case 15:
return "P";
case 16:
return "Q";
case 17:
return "R";
case 18:
return "S";
case 19:
return "T";
case 20:
return "U";
case 21:
return "V";
case 22:
return "W";
case 23:
return "X";
case 24:
return "Y";
case 25:
return "Z";
case 26:
return "a";
case 27:
return "b";
case 28:
return "c";
case 29:
return "d";
case 30:
return "e";
case 31:
return "f";
case 32:
return "g";
case 33:
return "h";
case 34:
return "i";
case 35:
return "j";
case 36:
return "k";
case 37:
return "l";
case 38:
return "m";
case 39:
return "n";
case 40:
return "o";
case 41:
return "p";
case 42:
return "q";
case 43:
return "r";
case 44:
return "s";
case 45:
return "t";
case 46:
return "u";
case 47:
return "v";
case 48:
return "w";
case 49:
return "x";
case 50:
return "y";
case 51:
return "z";
case 52:
return "0";
case 53:
return "1";
case 54:
return "2";
case 55:
return "3";
case 56:
return "4";
case 57:
return "5";
case 58:
return "6";
case 59:
return "7";
case 60:
return "8";
case 61:
return "9";
case 62:
return "+";
case 63:
return "/";
}
return "*";
}
}
