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FormBody.java
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FormBody.java
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/*
* Copyright (C) 2014 Square, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package okhttp3;
import java.io.IOException;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.List;
import javax.annotation.Nullable;
import okhttp3.internal.Util;
import okio.Buffer;
import okio.BufferedSink;
import static okhttp3.HttpUrl.FORM_ENCODE_SET;
import static okhttp3.HttpUrl.percentDecode;
public final class FormBody extends RequestBody {
private static final MediaType CONTENT_TYPE =
MediaType.parse("application/x-www-form-urlencoded");
private final List<String> encodedNames;
private final List<String> encodedValues;
FormBody(List<String> encodedNames, List<String> encodedValues) {
this.encodedNames = Util.immutableList(encodedNames);
this.encodedValues = Util.immutableList(encodedValues);
}
/** The number of key-value pairs in this form-encoded body. */
public int size() {
return encodedNames.size();
}
public String encodedName(int index) {
return encodedNames.get(index);
}
public String name(int index) {
return percentDecode(encodedName(index), true);
}
public String encodedValue(int index) {
return encodedValues.get(index);
}
public String value(int index) {
return percentDecode(encodedValue(index), true);
}
@Override public MediaType contentType() {
return CONTENT_TYPE;
}
@Override public long contentLength() {
return writeOrCountBytes(null, true);
}
@Override public void writeTo(BufferedSink sink) throws IOException {
writeOrCountBytes(sink, false);
}
/**
* Either writes this request to {@code sink} or measures its content length. We have one method
* do double-duty to make sure the counting and content are consistent, particularly when it comes
* to awkward operations like measuring the encoded length of header strings, or the
* length-in-digits of an encoded integer.
*/
private long writeOrCountBytes(@Nullable BufferedSink sink, boolean countBytes) {
long byteCount = 0L;
Buffer buffer;
if (countBytes) {
buffer = new Buffer();
} else {
buffer = sink.buffer();
}
for (int i = 0, size = encodedNames.size(); i < size; i++) {
if (i > 0) buffer.writeByte('&');
buffer.writeUtf8(encodedNames.get(i));
buffer.writeByte('=');
buffer.writeUtf8(encodedValues.get(i));
}
if (countBytes) {
byteCount = buffer.size();
buffer.clear();
}
return byteCount;
}
public static final class Builder {
private final List<String> names = new ArrayList<>();
private final List<String> values = new ArrayList<>();
private final Charset charset;
public Builder() {
this(null);
}
public Builder(Charset charset) {
this.charset = charset;
}
public Builder add(String name, String value) {
names.add(HttpUrl.canonicalize(name, FORM_ENCODE_SET, false, false, true, true, charset));
values.add(HttpUrl.canonicalize(value, FORM_ENCODE_SET, false, false, true, true, charset));
return this;
}
public Builder addEncoded(String name, String value) {
names.add(HttpUrl.canonicalize(name, FORM_ENCODE_SET, true, false, true, true, charset));
values.add(HttpUrl.canonicalize(value, FORM_ENCODE_SET, true, false, true, true, charset));
return this;
}
public FormBody build() {
return new FormBody(names, values);
}
}
}