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package httpcli;
import java.io.IOException;
import java.net.URLEncoder;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class HttpUrl {
final String url;
final List<String> paths;
final List<String> keys;
final List<Object> values;
public HttpUrl(String url, List<String> paths , List<String> keys, List<Object> values) {
this.url = url;
this.paths = paths;
this.keys = keys;
this.values = values;
}
public HttpUrl(String url) {
this(url, new ArrayList<String>(), new ArrayList<String>(), new ArrayList<Object>());
}
public String getUrl() {
return url;
}
public HttpUrl addFormBody(FormBody body) {
for (int i = 0; i < body.size(); i++) {
addQueryParameter(body.key(i), body.value(i));
}
return this;
}
public HttpUrl addPathSegment(String path) {
paths.add(path);
return this;
}
public String path(int index) {
return paths.get(index);
}
public String urlPaths(Charset chrst) throws IOException {
if (paths.isEmpty()) return url;
StringBuilder sb = new StringBuilder(url);
if (!url.endsWith("/")) sb.append('/');
for (int i = 0; i < paths.size(); i++) {
if (i > 0) sb.append('/');
sb.append(URLEncoder.encode(path(i), chrst.name()));
}
return sb.toString();
}
public int size() {
return keys.size();
}
public HttpUrl addQueryParameter(String key, Object value) {
keys.add(key);
values.add(value);
return this;
}
public String key(int index) {
return keys.get(index);
}
public Object value(int index) {
return values.get(index);
}
public String valueStr(int index) {
Object value = value(index);
return value == null ? "" : value.toString();
}
public String encodedUrlParams(Charset chrst) throws IOException {
StringBuilder sb = new StringBuilder();
for (int i = 0, size = size(); i < size; i++) {
if (i > 0) sb.append('&');
sb.append(URLEncoder.encode(key(i), chrst.name()));
sb.append('=');
sb.append(URLEncoder.encode(valueStr(i), chrst.name()));
}
return sb.toString();
}
public static String toUrl(String url, FormBody body, Charset charset) {
return new HttpUrl(url, Collections.EMPTY_LIST, body.keys, body.values)
.toString(charset);
}
public String toString(Charset charset) {
try {
String rurl = urlPaths(charset);
if (size() == 0) return rurl;
String encodedParams = encodedUrlParams(charset);
if (encodedParams.length() > 0)
return new StringBuilder(rurl.length() + 1 + encodedParams.length())
.append(rurl)
.append(rurl.endsWith("?") ? '&' : '?')
.append(encodedParams).toString();
} catch(IOException ignore) {
// empty
}
return url;
}
@Override public String toString() {
return toString(HttpRequest.DEFAULT_ENCODING);
}
}
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