74 lines
2.3 KiB
Java
74 lines
2.3 KiB
Java
package org.schabi.newpipe.extractor.utils;
|
|
|
|
import java.util.ArrayList;
|
|
import java.util.Arrays;
|
|
import java.util.List;
|
|
|
|
import javax.annotation.Nonnull;
|
|
import javax.annotation.Nullable;
|
|
|
|
import org.schabi.newpipe.extractor.exceptions.ParsingException;
|
|
|
|
import com.grack.nanojson.JsonArray;
|
|
import com.grack.nanojson.JsonObject;
|
|
|
|
public class JsonUtils {
|
|
|
|
private JsonUtils() {
|
|
}
|
|
|
|
@Nonnull
|
|
public static Object getValue(@Nonnull JsonObject object, @Nonnull String path) throws ParsingException{
|
|
|
|
List<String> keys = Arrays.asList(path.split("\\."));
|
|
object = getObject(object, keys.subList(0, keys.size() - 1));
|
|
if (null == object) throw new ParsingException("Unable to get " + path);
|
|
Object result = object.get(keys.get(keys.size() - 1));
|
|
if(null == result) throw new ParsingException("Unable to get " + path);
|
|
return result;
|
|
}
|
|
|
|
@Nonnull
|
|
public static String getString(@Nonnull JsonObject object, @Nonnull String path) throws ParsingException{
|
|
Object value = getValue(object, path);
|
|
if(value instanceof String) {
|
|
return (String) getValue(object, path);
|
|
}else {
|
|
throw new ParsingException("Unable to get " + path);
|
|
}
|
|
}
|
|
|
|
@Nonnull
|
|
public static Number getNumber(@Nonnull JsonObject object, @Nonnull String path) throws ParsingException{
|
|
Object value = getValue(object, path);
|
|
if(value instanceof Number) {
|
|
return (Number) getValue(object, path);
|
|
}else {
|
|
throw new ParsingException("Unable to get " + path);
|
|
}
|
|
}
|
|
|
|
|
|
@Nonnull
|
|
public static List<Object> getValues(@Nonnull JsonArray array, @Nonnull String path) throws ParsingException {
|
|
|
|
List<Object> result = new ArrayList<>();
|
|
for (int i = 0; i < array.size(); i++) {
|
|
JsonObject obj = array.getObject(i);
|
|
result.add(getValue(obj, path));
|
|
}
|
|
return result;
|
|
}
|
|
|
|
@Nullable
|
|
private static JsonObject getObject(@Nonnull JsonObject object, @Nonnull List<String> keys) {
|
|
JsonObject result = object;
|
|
for (String key : keys) {
|
|
result = result.getObject(key);
|
|
if (null == result) break;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
}
|