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Use TreeMap in Response #1198

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Use TreeMap in Response #1198

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ec5fb7d
Use TreeMap in Response
Isira-Seneviratne Jul 20, 2024
7fb4dbe
Reuse map if it is a SortedMap instead of creating a new one
Isira-Seneviratne Jul 20, 2024
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26 changes: 14 additions & 12 deletions extractor/src/main/java/org/schabi/newpipe/extractor/downloader/Response.java
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Original file line number Diff line number Diff line change
Expand Up @@ -5,26 +5,33 @@
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.SortedMap;
import java.util.TreeMap;

/**
* A Data class used to hold the results from requests made by the Downloader implementation.
*/
public class Response {
private final int responseCode;
private final String responseMessage;
private final Map<String, List<String>> responseHeaders;
private final SortedMap<String, List<String>> responseHeaders;
private final String responseBody;

private final String latestUrl;

public Response(final int responseCode,
final String responseMessage,
@Nullable final Map<String, List<String>> responseHeaders,
@Nonnull final Map<String, List<String>> responseHeaders,
@Nullable final String responseBody,
@Nullable final String latestUrl) {
this.responseCode = responseCode;
this.responseMessage = responseMessage;
this.responseHeaders = responseHeaders == null ? Collections.emptyMap() : responseHeaders;

if (responseHeaders instanceof SortedMap) {
this.responseHeaders = (SortedMap<String, List<String>>) responseHeaders;
} else {
this.responseHeaders = new TreeMap<>(String.CASE_INSENSITIVE_ORDER);
this.responseHeaders.putAll(responseHeaders);
}

this.responseBody = responseBody == null ? "" : responseBody;
this.latestUrl = latestUrl;
Expand Down Expand Up @@ -71,13 +78,8 @@ public String latestUrl() {
*/
@Nullable
public String getHeader(final String name) {
for (final Map.Entry<String, List<String>> headerEntry : responseHeaders.entrySet()) {
final String key = headerEntry.getKey();
if (key != null && key.equalsIgnoreCase(name) && !headerEntry.getValue().isEmpty()) {
return headerEntry.getValue().get(0);
}
}

return null;
// Header lookup is case-insensitive
final var values = responseHeaders.getOrDefault(name, Collections.emptyList());
return values.isEmpty() ? null : values.get(0);
}
}
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