Fix issue: Auto-linking files with safe character replacements #9267

CHANGELOG.md

@@ -74,6 +74,7 @@ Note that this project **does not** adhere to [Semantic Versioning](http://semve
 - We fixed an issue where hitting enter on the search field within the preferences dialog closed the dialog. [koppor#630](https://github.com/koppor/jabref/issues/630)
 - We fixed a typo within a connection error message. [koppor#625](https://github.com/koppor/jabref/issues/625)
 - We fixed an issue where the 'close dialog' key binding was not closing the Preferences dialog. [#8888](https://github.com/jabref/jabref/issues/8888)
+- We fixed an issue when using an unsafe character in the citation key, the auto-linking feature fails to link files. [#9267](https://github.com/JabRef/jabref/issues/9267)
 
 ### Removed
 

src/main/java/org/jabref/logic/util/io/CitationKeyBasedFileFinder.java

@@ -66,7 +66,7 @@ public List<Path> findAssociatedFiles(BibEntry entry, List<Path> directories, Li
     }
 
     private boolean matches(String filename, String citeKey) {
-        boolean startsWithKey = filename.startsWith(citeKey);
+        boolean startsWithKey = filename.startsWith(FileNameCleaner.cleanFileName(citeKey));
         if (startsWithKey) {
             // The file name starts with the key, that's already a good start
             // However, we do not want to match "JabRefa" for "JabRef" since this is probably a file belonging to another entry published in the same time / same name

src/test/java/org/jabref/logic/util/io/CitationKeyBasedFileFinderTest.java

@@ -15,6 +15,7 @@
 import org.junit.jupiter.api.io.TempDir;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
 
 class CitationKeyBasedFileFinderTest {
 
@@ -99,4 +100,30 @@ void findAssociatedFilesInNonExistingDirectoryFindsNothing() throws Exception {
 
         assertEquals(Collections.emptyList(), results);
     }
+
+    @Test
+    void findAssociatedFilesWithUnsafeCharactersStartWithSearch() throws Exception {
+        BibEntry entryWithUnsafeCitationKey = new BibEntry(StandardEntryType.Article);
+        entryWithUnsafeCitationKey.setCitationKey("?test");
+
+        Path testFile = Files.createFile(pdfsDir.resolve("_test_file.pdf"));
+        FileFinder fileFinder = new CitationKeyBasedFileFinder(false);
+
+        List<Path> results = fileFinder.findAssociatedFiles(entryWithUnsafeCitationKey, Collections.singletonList(pdfsDir), Collections.singletonList("pdf"));
+
+        assertEquals(Collections.singletonList(testFile), results);
+    }
+
+    @Test
+    void findAssociatedFilesWithUnsafeCharactersExactSearch() throws Exception {
+        BibEntry entryWithUnsafeCitationKey = new BibEntry(StandardEntryType.Article);
+        entryWithUnsafeCitationKey.setCitationKey("test:test/*test?");
+
+        Path testFile = Files.createFile(pdfsDir.resolve("test_test__test_.pdf"));
+        FileFinder fileFinder = new CitationKeyBasedFileFinder(true);
+
+        List<Path> results = fileFinder.findAssociatedFiles(entryWithUnsafeCitationKey, Collections.singletonList(pdfsDir), Collections.singletonList("pdf"));
+
+        assertNotEquals(Collections.singletonList(testFile), results);
+    }
 }