Add NormalizeEnDashesFormatter

CHANGELOG.md

@@ -15,6 +15,7 @@ We refer to [GitHub issues](https://github.com/JabRef/jabref/issues) by using `#
 - We added a fetcher based on RFC-IDs. [#3971](https://github.com/JabRef/jabref/issues/3971)
 - We changed the implementation of the `[shorttitle]` key pattern. It now removes small words like `a`, `an`, `on`, `the` etc. Refer to the help page for a complete overview. [Feature request in the forum](http://discourse.jabref.org/t/jabref-differences-in-shorttitle-between-versions-3-8-1-and-4-not-discounting-the-a-an-of-in-titles/1147)
 - We added a formatter for adding braces around the `title` field. E.g., `title = {ExamPle}` becomes `title = {{ExamPle}}`, which prevents BibTeX to convert it to lower case. You can use it at the [cleanup entries](http://help.jabref.org/en/CleanupEntries) functionality.
+- We added a formatter to ensure correct en dashes in the `title` field. E.g., `title = {Example - illustrative}` becomes `title = {Example -- illustrative}`.
 - We streamlined the defaults for a [cleanup of entries](http://help.jabref.org/en/CleanupEntries) in the case of BibTeX.
 
 ### Fixed

src/main/java/org/jabref/logic/formatter/Formatters.java

@@ -13,6 +13,7 @@
 import org.jabref.logic.formatter.bibtexfields.HtmlToUnicodeFormatter;
 import org.jabref.logic.formatter.bibtexfields.LatexCleanupFormatter;
 import org.jabref.logic.formatter.bibtexfields.NormalizeDateFormatter;
+import org.jabref.logic.formatter.bibtexfields.NormalizeEnDashesFormatter;
 import org.jabref.logic.formatter.bibtexfields.NormalizeMonthFormatter;
 import org.jabref.logic.formatter.bibtexfields.NormalizeNamesFormatter;
 import org.jabref.logic.formatter.bibtexfields.NormalizePagesFormatter;
@@ -53,6 +54,7 @@ public class Formatters {
             new LatexCleanupFormatter(),
             new MinifyNameListFormatter(),
             new NormalizeDateFormatter(),
+            new NormalizeEnDashesFormatter(),
             new NormalizeMonthFormatter(),
             new NormalizeNamesFormatter(),
             new NormalizePagesFormatter(),

src/main/java/org/jabref/logic/formatter/bibtexfields/NormalizeEnDashesFormatter.java

@@ -0,0 +1,32 @@
+package org.jabref.logic.formatter.bibtexfields;
+
+import org.jabref.logic.l10n.Localization;
+import org.jabref.model.cleanup.Formatter;
+
+public class NormalizeEnDashesFormatter extends Formatter {
+
+    @Override
+    public String getName() {
+        return Localization.lang("Normalize en dashes");
+    }
+
+    @Override
+    public String getKey() {
+        return "normalize_en_dashes";
+    }
+
+    @Override
+    public String format(String value) {
+        return value.replaceAll(" - ", " -- ");
+    }
+
+    @Override
+    public String getDescription() {
+        return Localization.lang("Normalizes the en dashes.");
+    }
+
+    @Override
+    public String getExampleInput() {
+        return "Winery - A Modeling Tool for TOSCA-based Cloud Applications";
+    }
+}

src/main/resources/l10n/JabRef_en.properties

@@ -1957,13 +1957,15 @@ LaTeX\ to\ Unicode=LaTeX to Unicode
 Lower\ case=Lower case
 Minify\ list\ of\ person\ names=Minify list of person names
 Normalize\ date=Normalize date
+Normalize\ en\ dashes=Normalize en dashes
 Normalize\ month=Normalize month
 Normalize\ month\ to\ BibTeX\ standard\ abbreviation.=Normalize month to BibTeX standard abbreviation.
 Normalize\ names\ of\ persons=Normalize names of persons
 Normalize\ page\ numbers=Normalize page numbers
 Normalize\ pages\ to\ BibTeX\ standard.=Normalize pages to BibTeX standard.
 Normalizes\ lists\ of\ persons\ to\ the\ BibTeX\ standard.=Normalizes lists of persons to the BibTeX standard.
 Normalizes\ the\ date\ to\ ISO\ date\ format.=Normalizes the date to ISO date format.
+Normalizes\ the\ en\ dashes.=Normalizes the en dashes.
 Ordinals\ to\ LaTeX\ superscript=Ordinals to LaTeX superscript
 Protect\ terms=Protect terms
 Add\ enclosing\ braces=Add enclosing braces

src/test/java/org/jabref/logic/formatter/bibtexfields/NormalizeEnDashesFormatterTest.java

@@ -0,0 +1,54 @@
+package org.jabref.logic.formatter.bibtexfields;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+/**
+ * Tests in addition to the general tests from {@link org.jabref.logic.formatter.FormatterTest}
+ */
+public class NormalizeEnDashesFormatterTest {
+
+    private NormalizeEnDashesFormatter formatter;
+
+    @BeforeEach
+    public void setUp() {
+        formatter = new NormalizeEnDashesFormatter();
+    }
+
+    @Test
+    public void formatExample() {
+        assertEquals("Winery -- A Modeling Tool for TOSCA-based Cloud Applications", formatter.format(formatter.getExampleInput()));
+    }
+
+    @Test
+    public void formatExampleOfChangelog() {
+        assertEquals("Example -- illustrative", formatter.format("Example - illustrative"));
+    }
+
+    @Test
+    public void dashesWithinWordsAreKept() {
+        assertEquals("Example-illustrative", formatter.format("Example-illustrative"));
+    }
+
+    @Test
+    public void dashesPreceededByASpaceAreKept() {
+        assertEquals("Example -illustrative", formatter.format("Example -illustrative"));
+    }
+
+    @Test
+    public void dashesFollowedByASpaceAreKept() {
+        assertEquals("Example- illustrative", formatter.format("Example- illustrative"));
+    }
+
+    @Test
+    public void dashAtTheBeginningIsKept() {
+        assertEquals("- illustrative", formatter.format("- illustrative"));
+    }
+
+    @Test
+    public void dashAtTheEndIsKept() {
+        assertEquals("Example-", formatter.format("Example-"));
+    }
+}