Remove LaTeX #518

src/main/java/net/sf/jabref/logic/formatter/bibtexfields/RemoveLatexFormatter.java

@@ -0,0 +1,48 @@
+package net.sf.jabref.logic.formatter.bibtexfields;
+
+import net.sf.jabref.logic.formatter.Formatter;
+import net.sf.jabref.logic.l10n.Localization;
+
+public class RemoveLatexFormatter implements Formatter {
+
+    @Override
+    public String getName() {
+        return Localization.lang("LaTeX remover");
+    }
+
+    @Override
+    public String getKey() {
+        return "remove_latex";
+    }
+
+    @Override
+    public String format(String oldString) {
+        String newValue = oldString;
+
+        // Remove redundant $, {, and }, but not if the } is part of a command argument: \mbox{-}{GPS} should not be adjusted
+        newValue = newValue.replace("$$", "").replaceAll("(?<!\\\\[\\p{Alpha}]{0,100}\\{[^\\}]{0,100})\\}([-/ ]?)\\{",
+                "$1");
+        // Move numbers, +, -, /, and brackets into equations
+        newValue = newValue.replaceAll("(([^$]|\\\\\\$)*)\\$", "$1@@"); // Replace $, but not \$ with @@
+        newValue = newValue.replaceAll("([^@]*)@@([^@]*)@@", "$1\\$$2@@"); // Replace every other @@ with $
+        //newValue = newValue.replaceAll("([0-9\\(\\.]+) \\$","\\$$1\\\\ "); // Move numbers followed by a space left of $ inside the equation, e.g., 0.35 $\mu$m
+        newValue = newValue.replaceAll("([0-9\\(\\.]+[ ]?[-+/]?[ ]?)\\$", "\\$$1"); // Move numbers, possibly with operators +, -, or /,  left of $ into the equation
+        newValue = newValue.replaceAll("@@([ ]?[-+/]?[ ]?[0-9\\)\\.]+)", " $1@@"); // Move numbers right of @@ into the equation
+        newValue = newValue.replace("@@", "$"); // Replace all @@ with $
+        newValue = newValue.replace("  ", " "); // Clean up
+        newValue = newValue.replace("$$", "");
+        newValue = newValue.replace(" )$", ")$");
+        return newValue;
+    }
+
+    @Override
+    public String getDescription() {
+        return Localization.lang("Removes LaTeX code.");
+    }
+
+    @Override
+    public String getExampleInput() {
+        return "\textit{Nucleus} {API}";
+    }
+
+}

src/test/java/net/sf/jabref/logic/formatter/bibtexfields/RemoveLatexFormatterTest.java

@@ -0,0 +1,25 @@
+package net.sf.jabref.logic.formatter.bibtexfields;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+/**
+ * Tests in addition to the general tests from {@link net.sf.jabref.logic.formatter.FormatterTest}
+ */
+public class RemoveLatexFormatterTest {
+
+    private final RemoveLatexFormatter formatter = new RemoveLatexFormatter();
+
+    @Test
+    public void test() {
+        assertEquals("$\\alpha\\beta$", formatter.format("$\\alpha$$\\beta$"));
+    }
+
+    @Test
+    public void formatExample() {
+        assertEquals("Nucleus API", formatter.format(formatter.getExampleInput()));
+    }
+
+
+}