net.sourceforge.plantuml.code.AsciiEncoderFinalZeros Maven / Gradle / Ivy
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PlantUML is a component that allows to quickly write diagrams from text.
// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
package net.sourceforge.plantuml.code;
public class AsciiEncoderFinalZeros {
// ::remove file when __CORE__
public String encode(byte data[]) {
if (data == null) {
return "";
}
final StringBuilder result = new StringBuilder((data.length * 4 + 2) / 3);
for (int i = 0; i < data.length; i += 3) {
append3bytes(result, data[i] & 0xFF, i + 1 < data.length ? data[i + 1] & 0xFF : 0,
i + 2 < data.length ? data[i + 2] & 0xFF : 0);
}
while (result.length() > 0 && result.charAt(result.length() - 1) == '0') {
result.setLength(result.length() - 1);
}
return result.toString();
}
private void append3bytes(StringBuilder sb, int b1, int b2, int b3) {
final int c1 = b1 >> 2;
final int c2 = ((b1 & 0x3) << 4) | (b2 >> 4);
final int c3 = ((b2 & 0xF) << 2) | (b3 >> 6);
final int c4 = b3 & 0x3F;
sb.append(AsciiEncoder.encode6bit[c1 & 0x3F]);
sb.append(AsciiEncoder.encode6bit[c2 & 0x3F]);
sb.append(AsciiEncoder.encode6bit[c3 & 0x3F]);
sb.append(AsciiEncoder.encode6bit[c4 & 0x3F]);
}
}