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PlantUML is a component that allows to quickly write diagrams from text.
// 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:
*
* https://plantuml.com/patreon (only 1$ per month!)
* https://plantuml.com/liberapay (only 1€ per month!)
* https://plantuml.com/paypal
*
*
* PlantUML is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* PlantUML distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see pendingIndents = new ArrayList<>();
public JsonValue parse(List lines) {
result = new JsonObject();
pendingIndents.clear();
pendingIndents.add(0);
final YamlLines yamlLines = new YamlLines(lines);
for (String s : yamlLines) {
parseSingleLine(s);
}
return result;
}
private String[] nameAndValue(String s) {
final Pattern p1 = Pattern.compile("^\\s*" + YamlLines.KEY + "\\s*: \\s*(\\S.*)$");
final Matcher m1 = p1.matcher(s);
if (m1.matches()) {
final String name = m1.group(1);
final String data = m1.group(2).trim();
return new String[] { name, data };
}
return null;
}
private void parseSingleLine(String s) {
final int indent = getIndent(s);
// System.err.println("s=" + s);
if (isListStrict(s)) {
strictMuteToArray(indent);
return;
}
final String listedValue = listedValue(s);
if (listedValue != null) {
final JsonArray array = getForceArray(indent);
array.add(listedValue);
return;
}
final JsonObject working = (JsonObject) getWorking(indent);
if (working == null) {
System.err.println("ERROR: ignoring " + s);
return;
}
final String[] nameAndValue = nameAndValue(s);
if (nameAndValue != null) {
final String name = nameAndValue[0];
final String data = StringUtils.eventuallyRemoveStartingAndEndingDoubleQuote(nameAndValue[1], "\"");
working.add(name, data);
return;
}
final String nameOnly = YamlLines.nameOnly(s);
if (nameOnly != null) {
working.add(nameOnly, new JsonObject());
return;
}
throw new UnsupportedOperationException(s);
}
private String listedValue(String s) {
final Pattern p1 = Pattern.compile("^\\s*[-]\\s*(\\S.*)$");
final Matcher m1 = p1.matcher(s);
if (m1.matches()) {
final String name = m1.group(1).trim();
return name;
}
return null;
}
private JsonArray getForceArray(int indent) {
if (indent == 0 && getLastIndent() == 0) {
if (result instanceof JsonArray == false) {
result = new JsonArray();
}
return (JsonArray) result;
}
while (getLastIndent() > indent - 1)
pendingIndents.remove(pendingIndents.size() - 1);
final JsonObject last = (JsonObject) search(result, pendingIndents.size());
final String field = last.names().get(last.size() - 1);
if (last.get(field) instanceof JsonArray == false) {
last.set(field, new JsonArray());
}
return (JsonArray) last.get(field);
}
private void strictMuteToArray(int indent) {
if (indent == 0 && getLastIndent() == 0) {
if (result instanceof JsonArray == false) {
result = new JsonArray();
}
return;
}
while (getLastIndent() > indent)
pendingIndents.remove(pendingIndents.size() - 1);
if (result instanceof JsonArray) {
((JsonArray) result).add(new JsonObject());
return;
}
final JsonObject last = (JsonObject) search(result, pendingIndents.size());
final String field = last.names().get(last.size() - 1);
if (last.get(field) instanceof JsonArray == false) {
last.set(field, new JsonArray());
} else {
((JsonArray) last.get(field)).add(new JsonObject());
}
}
private boolean isListStrict(String s) {
return s.trim().equals("-");
}
private int getLastIndent() {
return pendingIndents.get(pendingIndents.size() - 1);
}
private JsonValue getWorking(int indent) {
if (indent > getLastIndent()) {
pendingIndents.add(indent);
return search(result, pendingIndents.size());
}
if (indent == getLastIndent()) {
return search(result, pendingIndents.size());
}
final int idx = pendingIndents.indexOf(indent);
if (idx == -1) {
return null;
}
while (pendingIndents.size() > idx + 1)
pendingIndents.remove(pendingIndents.size() - 1);
return search(result, pendingIndents.size());
}
private static JsonValue search(JsonValue current1, int size) {
if (current1 instanceof JsonArray) {
JsonArray array = (JsonArray) current1;
final JsonValue tmp;
if (array.size() == 0) {
tmp = new JsonObject();
array.add(tmp);
} else {
tmp = array.get(array.size() - 1);
}
return tmp;
}
if (size <= 1) {
return current1;
}
final JsonObject current = (JsonObject) current1;
final String last = current.names().get(current.size() - 1);
// System.err.println("last=" + last);
JsonValue tmp = current.get(last);
if (tmp instanceof JsonArray) {
JsonArray array = (JsonArray) tmp;
if (array.size() == 0) {
tmp = new JsonObject();
array.add(tmp);
} else {
tmp = array.get(array.size() - 1);
}
}
if (tmp instanceof JsonString) {
System.err.println("JsonString? " + tmp);
return null;
}
return search(tmp, size - 1);
}
private int getIndent(String s) {
int indent = 0;
for (int i = 0; i < s.length(); i++) {
final char ch = s.charAt(i);
if (ch == ' ' || ch == '\t') {
indent++;
} else {
return indent;
}
}
return 0;
}
}