package org.xbib.elasticsearch.common.xcontent;
import com.fasterxml.jackson.dataformat.smile.SmileConstants;
import org.elasticsearch.ElasticsearchParseException;
import org.elasticsearch.common.bytes.BytesArray;
import org.elasticsearch.common.bytes.BytesReference;
import org.elasticsearch.common.xcontent.XContent;
import org.elasticsearch.common.xcontent.json.JsonXContent;
import org.elasticsearch.common.xcontent.smile.SmileXContent;
import org.elasticsearch.common.xcontent.yaml.YamlXContent;
import org.xbib.elasticsearch.common.xcontent.xml.XmlXContent;
import org.xbib.elasticsearch.common.xcontent.xml.XmlXParams;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Arrays;
/**
* A one stop to use {@link org.elasticsearch.common.xcontent.XContent} and {@link XmlXContentBuilder}.
*/
public class XmlXContentFactory {
private static int GUESS_HEADER_LENGTH = 20;
/**
* Returns a content builder using JSON format ({@link XmlXContentType#JSON}.
*/
public static XmlXContentBuilder jsonBuilder() throws IOException {
return contentBuilder(XmlXContentType.JSON);
}
/**
* Constructs a new json builder that will output the result into the provided output stream.
*/
public static XmlXContentBuilder jsonBuilder(OutputStream os) throws IOException {
return new XmlXContentBuilder(JsonXContent.jsonXContent, os);
}
/**
* Returns a content builder using SMILE format ({@link XmlXContentType#SMILE}.
*/
public static XmlXContentBuilder smileBuilder() throws IOException {
return contentBuilder(XmlXContentType.SMILE);
}
/**
* Constructs a new json builder that will output the result into the provided output stream.
*/
public static XmlXContentBuilder smileBuilder(OutputStream os) throws IOException {
return new XmlXContentBuilder(SmileXContent.smileXContent, os);
}
/**
* Constructs a new yaml builder that will output the result into the provided output stream.
*/
public static XmlXContentBuilder yamlBuilder(OutputStream os) throws IOException {
return new XmlXContentBuilder(YamlXContent.yamlXContent, os);
}
/**
* Constructs a new xml builder using XML.
*/
public static XmlXContentBuilder xmlBuilder() throws IOException {
XmlXParams params = new XmlXParams();
return XmlXContent.contentBuilder(params);
}
/**
* Constructs a new xml builder using XML.
*/
public static XmlXContentBuilder xmlBuilder(XmlXParams params) throws IOException {
return XmlXContent.contentBuilder(params);
}
/**
* Constructs a new xml builder that will output the result into the provided output stream.
*/
public static XmlXContentBuilder xmlBuilder(OutputStream os) throws IOException {
return new XmlXContentBuilder(XmlXContent.xmlXContent(), os);
}
/**
* Constructs a xcontent builder that will output the result into the provided output stream.
*/
public static XmlXContentBuilder contentBuilder(XmlXContentType type, OutputStream outputStream) throws IOException {
if (type == XmlXContentType.JSON) {
return jsonBuilder(outputStream);
} else if (type == XmlXContentType.SMILE) {
return smileBuilder(outputStream);
} else if (type == XmlXContentType.YAML) {
return yamlBuilder(outputStream);
} else if (type == XmlXContentType.XML) {
return xmlBuilder(outputStream);
}
throw new IllegalArgumentException("No matching content type for " + type);
}
/**
* Returns a binary content builder for the provided content type.
*/
public static XmlXContentBuilder contentBuilder(XmlXContentType type) throws IOException {
if (type == XmlXContentType.XML) {
XmlXParams params = new XmlXParams();
return XmlXContent.contentBuilder(params);
}
throw new IllegalArgumentException("No matching content type for " + type);
}
/**
* Returns the {@link org.elasticsearch.common.xcontent.XContent} for the provided content type.
*/
public static XContent xContent(XmlXContentType type) {
return type.xContent();
}
/**
* Guesses the content type based on the provided char sequence.
*/
public static XmlXContentType xContentType(CharSequence content) {
int length = content.length() < GUESS_HEADER_LENGTH ? content.length() : GUESS_HEADER_LENGTH;
if (length == 0) {
return null;
}
char first = content.charAt(0);
if (first == '{') {
return XmlXContentType.JSON;
}
// Should we throw a failure here? Smile idea is to use it in bytes....
if (length > 2 && first == SmileConstants.HEADER_BYTE_1 && content.charAt(1) == SmileConstants.HEADER_BYTE_2 && content.charAt(2) == SmileConstants.HEADER_BYTE_3) {
return XmlXContentType.SMILE;
}
if (length > 2 && first == '-' && content.charAt(1) == '-' && content.charAt(2) == '-') {
return XmlXContentType.YAML;
}
for (int i = 0; i < length; i++) {
char c = content.charAt(i);
if (c == '{') {
return XmlXContentType.JSON;
}
if (c == '<') {
return XmlXContentType.XML;
}
}
return null;
}
/**
* Guesses the content (type) based on the provided char sequence.
*/
public static XContent xContent(CharSequence content) {
XmlXContentType type = xContentType(content);
if (type == null) {
throw new ElasticsearchParseException("Failed to derive xcontent from " + content);
}
return xContent(type);
}
/**
* Guesses the content type based on the provided bytes.
*/
public static XContent xContent(byte[] data) {
return xContent(data, 0, data.length);
}
/**
* Guesses the content type based on the provided bytes.
*/
public static XContent xContent(byte[] data, int offset, int length) {
XmlXContentType type = xContentType(data, offset, length);
if (type == null) {
throw new ElasticsearchParseException("Failed to derive xcontent from (offset=" + offset + ", length=" + length + "): " + Arrays.toString(data));
}
return xContent(type);
}
/**
* Guesses the content type based on the provided bytes.
*/
public static XmlXContentType xContentType(byte[] data) {
return xContentType(data, 0, data.length);
}
/**
* Guesses the content type based on the provided input stream.
*/
public static XmlXContentType xContentType(InputStream si) throws IOException {
int first = si.read();
if (first == -1) {
return null;
}
int second = si.read();
if (second == -1) {
return null;
}
if (first == SmileConstants.HEADER_BYTE_1 && second == SmileConstants.HEADER_BYTE_2) {
int third = si.read();
if (third == SmileConstants.HEADER_BYTE_3) {
return XmlXContentType.SMILE;
}
}
if (first == '{' || second == '{') {
return XmlXContentType.JSON;
}
if (first == '-' && second == '-') {
int third = si.read();
if (third == '-') {
return XmlXContentType.YAML;
}
}
if (first == '<' && second == '?') {
int third = si.read();
if (third == 'x') {
return XmlXContentType.XML;
}
}
for (int i = 2; i < GUESS_HEADER_LENGTH; i++) {
int val = si.read();
if (val == -1) {
return null;
}
if (val == '{') {
return XmlXContentType.JSON;
}
}
return null;
}
/**
* Guesses the content type based on the provided bytes.
*/
public static XmlXContentType xContentType(byte[] data, int offset, int length) {
return xContentType(new BytesArray(data, offset, length));
}
public static XContent xContent(BytesReference bytes) {
XmlXContentType type = xContentType(bytes);
if (type == null) {
throw new ElasticsearchParseException("Failed to derive xcontent from " + bytes);
}
return xContent(type);
}
/**
* Guesses the content type based on the provided bytes.
*/
public static XmlXContentType xContentType(BytesReference bytes) {
int length = bytes.length() < GUESS_HEADER_LENGTH ? bytes.length() : GUESS_HEADER_LENGTH;
if (length == 0) {
return null;
}
byte first = bytes.get(0);
if (first == '{') {
return XmlXContentType.JSON;
}
if (length > 2 && first == SmileConstants.HEADER_BYTE_1 && bytes.get(1) == SmileConstants.HEADER_BYTE_2 && bytes.get(2) == SmileConstants.HEADER_BYTE_3) {
return XmlXContentType.SMILE;
}
if (length > 2 && first == '-' && bytes.get(1) == '-' && bytes.get(2) == '-') {
return XmlXContentType.YAML;
}
if (length > 2 && first == '<' && bytes.get(1) == '?' && bytes.get(2) == 'x') {
return XmlXContentType.XML;
}
for (int i = 0; i < length; i++) {
if (bytes.get(i) == '{') {
return XmlXContentType.JSON;
}
}
return null;
}
}
