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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
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*/
package net.sourceforge.plantuml.tim;
import net.sourceforge.plantuml.json.JsonArray;
import net.sourceforge.plantuml.json.JsonObject;
import net.sourceforge.plantuml.json.JsonValue;
import net.sourceforge.plantuml.text.StringLocated;
import net.sourceforge.plantuml.text.TLineType;
import net.sourceforge.plantuml.tim.expression.TValue;
public class VariableManager {
private final TMemory memory;
private final TContext context;
private final StringLocated location;
public VariableManager(TContext context, TMemory memory, StringLocated location) {
this.memory = memory;
this.context = context;
this.location = location;
}
public int replaceVariables(String str, int i, StringBuilder result) throws EaterException {
final String presentVariable = getVarnameAt(str, i);
if (result.toString().endsWith("##"))
result.setLength(result.length() - 2);
final TValue value = memory.getVariable(presentVariable);
i += presentVariable.length() - 1;
if (value.isJson()) {
if (value.toJson().isString()) {
result.append(value.toJson().asString());
} else if (value.toJson().isNumber()) {
result.append(value.toJson().toString());
} else {
JsonValue jsonValue = (value.toJson().isArray()) ? (JsonArray) value.toJson()
: (JsonObject) value.toJson();
i++;
i = replaceJson(jsonValue, str, i, result) - 1;
}
} else {
result.append(value.toString());
}
if (i + 2 < str.length() && str.charAt(i + 1) == '#' && str.charAt(i + 2) == '#')
i += 2;
return i;
}
private int replaceJson(JsonValue jsonValue, String str, int i, StringBuilder result) throws EaterException {
while (i < str.length()) {
final char n = str.charAt(i);
if (n == '.') {
i++;
final StringBuilder fieldName = new StringBuilder();
while (i < str.length()) {
if (Character.isJavaIdentifierPart(str.charAt(i)) == false)
break;
fieldName.append(str.charAt(i));
i++;
}
jsonValue = ((JsonObject) jsonValue).get(fieldName.toString());
} else if (n == '[') {
i++;
final StringBuilder inBracket = new StringBuilder();
int level = 0;
while (true) {
if (str.charAt(i) == '[')
level++;
if (str.charAt(i) == ']') {
if (level == 0)
break;
level--;
}
inBracket.append(str.charAt(i));
i++;
}
final String nbString = context.applyFunctionsAndVariables(memory,
new StringLocated(inBracket.toString(), location.getLocation()));
if (jsonValue instanceof JsonArray) {
final int nb = Integer.parseInt(nbString);
jsonValue = ((JsonArray) jsonValue).get(nb);
} else if (jsonValue instanceof JsonObject) {
jsonValue = ((JsonObject) jsonValue).get(nbString);
} else {
throw new EaterException("Major parsing error", location);
}
if (jsonValue == null)
throw new EaterException("Data parsing error", location);
i++;
} else {
break;
}
}
if (jsonValue != null) {
if (jsonValue.isString())
result.append(jsonValue.asString());
else
result.append(jsonValue.toString());
}
return i;
}
public String getVarnameAt(String s, int pos) {
if (pos > 0 && TLineType.isLetterOrUnderscoreOrDigit(s.charAt(pos - 1))
&& justAfterBackslashN(s, pos) == false) {
return null;
}
final String varname = memory.variablesNames3().getLonguestMatchStartingIn(s, pos);
if (varname.length() == 0)
return null;
if (pos + varname.length() == s.length()
|| TLineType.isLetterOrUnderscoreOrDigit(s.charAt(pos + varname.length())) == false)
return varname;
return null;
}
public static boolean justAfterBackslashN(String s, int pos) {
return pos > 1 && s.charAt(pos - 2) == '\\' && s.charAt(pos - 1) == 'n';
}
}