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package shcm.shsupercm.fabric.citresewn.pack.format;
import net.minecraft.util.Identifier;
import net.minecraft.util.InvalidIdentifierException;
import java.io.*;
import java.nio.charset.StandardCharsets;
public class PropertiesGroupAdapter extends PropertyGroup {
public static final String EXTENSION = ".properties";
protected PropertiesGroupAdapter(String packName, Identifier identifier) {
super(packName, identifier);
}
@Override
public String getExtension() {
return EXTENSION;
}
@Override
public PropertyGroup load(String packName, Identifier identifier, InputStream is) throws IOException, InvalidIdentifierException {
try (BufferedReader reader = new BufferedReader(new InputStreamReader(is, StandardCharsets.UTF_8))) {
String line;
int linePos = 0, multilineSkip = 0;
while ((line = reader.readLine()) != null) {
linePos++;
line = line.stripLeading();
if (line.isEmpty() || line.startsWith("#") || line.startsWith("!"))
continue;
while (line.endsWith("\\")) {
String nextLine = reader.readLine();
linePos++;
multilineSkip++;
if (nextLine == null)
nextLine = "";
nextLine = nextLine.stripLeading();
if (nextLine.startsWith("#") || nextLine.startsWith("!"))
continue;
line = line.substring(0, line.length() - 1) + "\\n" + nextLine;
}
line = line.stripTrailing();
StringBuilder builder = new StringBuilder();
String key = null, keyMetadata = null;
final boolean checkColonSeparator = !line.contains("=");
for (int i = 0; i < line.length(); i++) {
char c = line.charAt(i);
if (c == '\\') { // escape
c = switch (c = line.charAt(++i)) {
case 'n' -> '\n';
case 'r' -> '\r';
case 'f' -> '\f';
case 't' -> '\t';
case 'u' -> {
try {
i += 4;
yield (char) Integer.parseInt(line.substring(i - 3, i + 1), 16);
} catch (ArrayIndexOutOfBoundsException | NumberFormatException e) {
throw new IOException("Malformatted escaped unicode character");
}
}
default -> c;
};
} else if (key == null && (c == '=' || (checkColonSeparator && c == ':'))) {
key = builder.toString().stripTrailing();
int metadataIndex = key.indexOf('.');
if (metadataIndex >= 0) {
keyMetadata = key.substring(metadataIndex + 1);
key = key.substring(0, metadataIndex);
}
builder = new StringBuilder();
for (i++; i < line.length() && Character.isWhitespace(line.charAt(i)); i++);
i--;
continue;
}
builder.append(c);
}
if (key == null)
throw new IOException("Missing separator in line " + linePos);
int pos = linePos - multilineSkip;
multilineSkip = 0;
this.put(pos, packName, identifier, key, keyMetadata, PropertySeparator.EQUALS, builder.toString());
}
}
return this;
}
}
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