io.github.green4j.jelly.CopyingStringBuilder Maven / Gradle / Ivy
/**
* MIT License
*
* Copyright (c) 2018-2024 Anatoly Gudkov and others.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package io.github.green4j.jelly;
public final class CopyingStringBuilder implements JsonStringBuilder {
private final StringBuilder buffer = new StringBuilder();
private final boolean rawString;
private int escapedUnicodeChar;
public CopyingStringBuilder() {
this(false);
}
public CopyingStringBuilder(final boolean rawString) {
this.rawString = rawString;
}
@Override
public int length() {
return buffer.length();
}
@Override
public char charAt(final int index) {
return buffer.charAt(index);
}
@Override
public void start(final CharSequence data, final int position) {
buffer.setLength(0);
}
@Override
public void append(final CharSequence data, final int start, final int len) {
buffer.append(data, start, start + len);
}
@Override
public void appendEscape() {
if (rawString) {
buffer.append('\\');
}
}
@Override
public void appendEscapedQuotationMark() {
buffer.append('"');
}
@Override
public void appendEscapedReverseSolidus() {
buffer.append('\\');
}
@Override
public void appendEscapedSolidus() {
buffer.append('/');
}
@Override
public void appendEscapedBackspace() {
if (rawString) {
buffer.append('b');
} else {
buffer.append((char) 0x08);
}
}
@Override
public void appendEscapedFormfeed() {
if (rawString) {
buffer.append('f');
} else {
buffer.append((char) 0x0c);
}
}
@Override
public void appendEscapedNewLine() {
if (rawString) {
buffer.append('n');
} else {
buffer.append((char) 0x0a);
}
}
@Override
public void appendEscapedCarriageReturn() {
if (rawString) {
buffer.append('r');
} else {
buffer.append((char) 0x0d);
}
}
@Override
public void appendEscapedHorisontalTab() {
if (rawString) {
buffer.append('t');
} else {
buffer.append((char) 0x09);
}
}
@Override
public void appendEscapedUnicodeU() {
if (rawString) {
buffer.append('u');
}
}
@Override
public boolean appendEscapedUnicodeChar1(final char c) {
if (rawString) {
switch (c) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
buffer.append(c);
break;
default:
return false;
}
} else {
switch (c) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
escapedUnicodeChar = 4096 * (c - '0');
break;
case 'A':
case 'a':
escapedUnicodeChar = 4096 * 10;
break;
case 'B':
case 'b':
escapedUnicodeChar = 4096 * 11;
break;
case 'C':
case 'c':
escapedUnicodeChar = 4096 * 12;
break;
case 'D':
case 'd':
escapedUnicodeChar = 4096 * 13;
break;
case 'E':
case 'e':
escapedUnicodeChar = 4096 * 14;
break;
case 'F':
case 'f':
escapedUnicodeChar = 4096 * 15;
break;
default:
return false;
}
}
return true;
}
@Override
public boolean appendEscapedUnicodeChar2(final char c) {
if (rawString) {
switch (c) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
buffer.append(c);
break;
default:
return false;
}
} else {
switch (c) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
escapedUnicodeChar = escapedUnicodeChar + 256 * (c - '0');
break;
case 'A':
case 'a':
escapedUnicodeChar = escapedUnicodeChar + 256 * 10;
break;
case 'B':
case 'b':
escapedUnicodeChar = escapedUnicodeChar + 256 * 11;
break;
case 'C':
case 'c':
escapedUnicodeChar = escapedUnicodeChar + 256 * 12;
break;
case 'D':
case 'd':
escapedUnicodeChar = escapedUnicodeChar + 256 * 13;
break;
case 'E':
case 'e':
escapedUnicodeChar = escapedUnicodeChar + 256 * 14;
break;
case 'F':
case 'f':
escapedUnicodeChar = escapedUnicodeChar + 256 * 15;
break;
default:
return false;
}
}
return true;
}
@Override
public boolean appendEscapedUnicodeChar3(final char c) {
if (rawString) {
switch (c) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
buffer.append(c);
break;
default:
return false;
}
} else {
switch (c) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
escapedUnicodeChar = escapedUnicodeChar + 16 * (c - '0');
break;
case 'A':
case 'a':
escapedUnicodeChar = escapedUnicodeChar + 16 * 10;
break;
case 'B':
case 'b':
escapedUnicodeChar = escapedUnicodeChar + 16 * 11;
break;
case 'C':
case 'c':
escapedUnicodeChar = escapedUnicodeChar + 16 * 12;
break;
case 'D':
case 'd':
escapedUnicodeChar = escapedUnicodeChar + 16 * 13;
break;
case 'E':
case 'e':
escapedUnicodeChar = escapedUnicodeChar + 16 * 14;
break;
case 'F':
case 'f':
escapedUnicodeChar = escapedUnicodeChar + 16 * 15;
break;
default:
return false;
}
}
return true;
}
@Override
public boolean appendEscapedUnicodeChar4(final char c) {
if (rawString) {
switch (c) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
buffer.append(c);
break;
default:
return false;
}
} else {
switch (c) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
escapedUnicodeChar = escapedUnicodeChar + 1 * (c - '0');
break;
case 'A':
case 'a':
escapedUnicodeChar = escapedUnicodeChar + 1 * 10;
break;
case 'B':
case 'b':
escapedUnicodeChar = escapedUnicodeChar + 1 * 11;
break;
case 'C':
case 'c':
escapedUnicodeChar = escapedUnicodeChar + 1 * 12;
break;
case 'D':
case 'd':
escapedUnicodeChar = escapedUnicodeChar + 1 * 13;
break;
case 'E':
case 'e':
escapedUnicodeChar = escapedUnicodeChar + 1 * 14;
break;
case 'F':
case 'f':
escapedUnicodeChar = escapedUnicodeChar + 1 * 15;
break;
default:
return false;
}
buffer.append((char) escapedUnicodeChar);
}
return true;
}
@Override
public CharSequence subSequence(final int start, final int end) {
return buffer.subSequence(start, end);
}
@Override
public String toString() {
return buffer.toString();
}
}
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