Allow embedded style maps to be disabled

3 files changed, 47 insertions, 14 deletions

diff --git a/src/main/java/org/zwobble/mammoth/DocumentConverter.java b/src/main/java/org/zwobble/mammoth/DocumentConverter.java
index 3a21fed..feba5ac 100644
--- a/src/main/java/org/zwobble/mammoth/DocumentConverter.java
+++ b/src/main/java/org/zwobble/mammoth/DocumentConverter.java
@@ -52,6 +52,14 @@ public class DocumentConverter {
     }
 
     /**
+     * By default, if the document contains an embedded style map, then it is combined with the default style map.
+     * Call this to ignore any embedded style maps.
+     */
+    public DocumentConverter disableEmbeddedStyleMap() {
+        return new DocumentConverter(options.disableEmbeddedStyleMap());
+    }
+
+    /**
      * Converts {@code stream} into an HTML string.
      * Note that using this method instead of {@link #convertToHtml(File file)}
      * means that relative paths to other files, such as images, cannot be resolved.
diff --git a/src/main/java/org/zwobble/mammoth/internal/conversion/DocumentToHtmlOptions.java b/src/main/java/org/zwobble/mammoth/internal/conversion/DocumentToHtmlOptions.java
index 1133018..8a709af 100644
--- a/src/main/java/org/zwobble/mammoth/internal/conversion/DocumentToHtmlOptions.java
+++ b/src/main/java/org/zwobble/mammoth/internal/conversion/DocumentToHtmlOptions.java
@@ -5,26 +5,37 @@ import org.zwobble.mammoth.internal.styles.StyleMap;
 import org.zwobble.mammoth.internal.styles.parsing.StyleMapParser;
 
 public class DocumentToHtmlOptions {
-    public static final DocumentToHtmlOptions DEFAULT = new DocumentToHtmlOptions("", false, StyleMap.EMPTY, false);
+    public static final DocumentToHtmlOptions DEFAULT = new DocumentToHtmlOptions("", false, StyleMap.EMPTY, StyleMap.EMPTY, false, false);
 
     private final String idPrefix;
     private final boolean preserveEmptyParagraphs;
     private final StyleMap styleMap;
+    private final StyleMap embeddedStyleMap;
     private final boolean disableDefaultStyleMap;
-
-    public DocumentToHtmlOptions(String idPrefix, boolean preserveEmptyParagraphs, StyleMap styleMap, boolean disableDefaultStyleMap) {
+    private final boolean disableEmbeddedStyleMap;
+
+    public DocumentToHtmlOptions(
+        String idPrefix,
+        boolean preserveEmptyParagraphs,
+        StyleMap styleMap,
+        StyleMap embeddedStyleMap,
+        boolean disableDefaultStyleMap,
+        boolean disableEmbeddedStyleMap
+    ) {
         this.idPrefix = idPrefix;
         this.preserveEmptyParagraphs = preserveEmptyParagraphs;
         this.styleMap = styleMap;
+        this.embeddedStyleMap = embeddedStyleMap;
         this.disableDefaultStyleMap = disableDefaultStyleMap;
+        this.disableEmbeddedStyleMap = disableEmbeddedStyleMap;
     }
 
     public DocumentToHtmlOptions idPrefix(String prefix) {
-        return new DocumentToHtmlOptions(prefix, preserveEmptyParagraphs, styleMap, disableDefaultStyleMap);
+        return new DocumentToHtmlOptions(prefix, preserveEmptyParagraphs, styleMap, embeddedStyleMap, disableDefaultStyleMap, disableEmbeddedStyleMap);
     }
 
     public DocumentToHtmlOptions preserveEmptyParagraphs() {
-        return new DocumentToHtmlOptions(idPrefix, true, styleMap, disableDefaultStyleMap);
+        return new DocumentToHtmlOptions(idPrefix, true, styleMap, embeddedStyleMap, disableDefaultStyleMap, disableEmbeddedStyleMap);
     }
 
     public DocumentToHtmlOptions addStyleMap(String styleMap) {
@@ -32,19 +43,19 @@ public class DocumentToHtmlOptions {
     }
 
     public DocumentToHtmlOptions addStyleMap(StyleMap styleMap) {
-        return withStyleMap(this.styleMap.update(styleMap));
+        return new DocumentToHtmlOptions(idPrefix, preserveEmptyParagraphs, this.styleMap.update(styleMap), embeddedStyleMap, disableDefaultStyleMap, disableEmbeddedStyleMap);
     }
 
     public DocumentToHtmlOptions disableDefaultStyleMap() {
-        return new DocumentToHtmlOptions(idPrefix, preserveEmptyParagraphs, styleMap, true);
+        return new DocumentToHtmlOptions(idPrefix, preserveEmptyParagraphs, styleMap, embeddedStyleMap, true, disableEmbeddedStyleMap);
     }
 
-    public DocumentToHtmlOptions addEmbeddedStyleMap(StyleMap embeddedStyleMap) {
-        return withStyleMap(StyleMap.merge(styleMap, embeddedStyleMap));
+    public DocumentToHtmlOptions disableEmbeddedStyleMap() {
+        return new DocumentToHtmlOptions(idPrefix, preserveEmptyParagraphs, styleMap, embeddedStyleMap, disableDefaultStyleMap, true);
     }
 
-    private DocumentToHtmlOptions withStyleMap(StyleMap styleMap) {
-        return new DocumentToHtmlOptions(idPrefix, preserveEmptyParagraphs, styleMap, disableDefaultStyleMap);
+    public DocumentToHtmlOptions addEmbeddedStyleMap(StyleMap embeddedStyleMap) {
+        return new DocumentToHtmlOptions(idPrefix, preserveEmptyParagraphs, styleMap, embeddedStyleMap, disableDefaultStyleMap, disableEmbeddedStyleMap);
     }
 
     public String idPrefix() {
@@ -56,8 +67,14 @@ public class DocumentToHtmlOptions {
     }
 
     public StyleMap styleMap() {
-        return disableDefaultStyleMap ? styleMap : DefaultStyles.DEFAULT_STYLE_MAP.update(styleMap);
+        StyleMap styleMap = StyleMap.EMPTY;
+        if (!disableDefaultStyleMap) {
+            styleMap = styleMap.update(DefaultStyles.DEFAULT_STYLE_MAP);
+        }
+        if (!disableEmbeddedStyleMap) {
+            styleMap = styleMap.update(embeddedStyleMap);
+        }
+        styleMap = styleMap.update(this.styleMap);
+        return styleMap;
     }
-
-
 }
diff --git a/src/test/java/org/zwobble/mammoth/tests/MammothTests.java b/src/test/java/org/zwobble/mammoth/tests/MammothTests.java
index bafd857..d7a2b66 100644
--- a/src/test/java/org/zwobble/mammoth/tests/MammothTests.java
+++ b/src/test/java/org/zwobble/mammoth/tests/MammothTests.java
@@ -252,6 +252,14 @@ public class MammothTests {
     }
 
     @Test
+    public void embeddedStyleMapsCanBeDisabled() throws IOException {
+        assertThat(
+            convertToHtml("embedded-style-map.docx", options -> options.disableEmbeddedStyleMap()),
+            isSuccess("<p>Walking on imported air</p>")
+        );
+    }
+
+    @Test
     public void embeddedStyleMapCanBeWrittenAndThenRead() throws IOException {
         InMemoryArchive archive = InMemoryArchive.fromStream(new FileInputStream(TestData.file("single-paragraph.docx")));
         EmbeddedStyleMap.embedStyleMap(archive, "p => h1");