public final Class LlmResponseCleaner

Class Inheritance

extends Object

java.lang.Object
org.jabref.logic.ai.util.LlmResponseCleaner

Imports

org.jspecify.annotations.Nullable

Cleans raw LLM response strings by extracting content from the last fenced code block (``` ... ```) if present, or simply trimming whitespace.

Rules:

If the response contains no ``` fences → return the string stripped of leading/trailing whitespace.
If one or more ``` fences exist → find the last complete block, strip the optional language label on the opening fence (e.g. ```json or ```markdown), and return the inner content trimmed.
If the last fence is unclosed (no matching closing ```) → treat everything after the opening fence line as the content.

Field Summary

Modifier and Type	Field and Description
private static final String	FENCE

Constructor Summary

Access	Constructor and Description
private	LlmResponseCleaner()

Method Summary

Modifier and Type	Method and Description
public static String	Returns: the cleaned string, never `null` clean(@Nullable String the raw LLM response; may be `null` response) Cleans the given LLM response string according to the rules above.
private static int	findLastOpener(String s) Returns the start index of the last "opening" ``` in the string.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

FENCE	back to summary
private static final String FENCE

Constructor Detail

LlmResponseCleaner	back to summary
private LlmResponseCleaner()

Method Detail

clean back to summary

clean	back to summary
public static String clean(@Nullable String response) Cleans the given LLM response string according to the rules above. Parameters response:@Nullable String the raw LLM response; may be `null` Returns:String the cleaned string, never `null`

public static String clean(@Nullable String response)

Cleans the given LLM response string according to the rules above.

Parameters

response:@Nullable String: the raw LLM response; may be null

Returns:String

the cleaned string, never null

findLastOpener back to summary

findLastOpener	back to summary
private static int findLastOpener(String s) Returns the start index of the last "opening" ``` in the string. We treat every `as a potential opener/closer pair. Walking through the string we toggle a flag: the first` opens a block, the next closes it, etc. We remember the start index of each opener and return the last one seen.

private static int findLastOpener(String s)

Returns the start index of the last "opening" ``` in the string.

We treat every as a potential opener/closer pair. Walking through the string we toggle a flag: the first opens a block, the next closes it, etc. We remember the start index of each opener and return the last one seen.