Misc fixes:

[sixth.git] / src / main / java / eu / svjatoslav / sixth / core / document / Heading.java

diff --git a/src/main/java/eu/svjatoslav/sixth/core/document/Heading.java b/src/main/java/eu/svjatoslav/sixth/core/document/Heading.java
index 6159e1d..8a80d9c 100644 (file)
--- a/src/main/java/eu/svjatoslav/sixth/core/document/Heading.java
+++ b/src/main/java/eu/svjatoslav/sixth/core/document/Heading.java
@@ -1,16 +1,24 @@
 package eu.svjatoslav.sixth.core.document;
 
+import eu.svjatoslav.commons.string.String2;
+import eu.svjatoslav.commons.string.tokenizer.TokenizerMatch;
+import eu.svjatoslav.sixth.core.document.content.ListElement;
 import eu.svjatoslav.sixth.core.document.text.FormattedText;
 
 import java.util.ArrayList;
 import java.util.List;
 
+import static eu.svjatoslav.sixth.core.document.Helper.TG_LIST;
+
 public class Heading {
     public final FormattedText name;
     public final int level;
     public final Heading parent;
     private final List<Heading> children = new ArrayList<>();
 
+    public final ListElement rootListElement = new ListElement(null, -2, null, "");
+    private ListElement currentListElement = rootListElement;
+
     public Heading(FormattedText name, int level, Heading parent){
         this.level = level;
         this.name = name;
@@ -25,4 +33,79 @@ public class Heading {
         return children;
     }
 
+    public String toMD () {
+        StringBuilder sb = new StringBuilder();
+
+        if (level > 0) sb.append(enlistTitleInMD());
+
+        rootListElement.toMD(sb, -2);
+
+        children.stream().map(Heading::toMD).forEach(sb::append);
+
+        return sb.toString();
+    }
+
+    private String enlistTitleInMD() {
+        String2 s = new String2();
+        s.append("#", level).append(" ").append(name.toMD(0)).append("\n");
+        return s.toString();
+    }
+
+    public ListElement getCurrentHeading(){
+        return currentListElement;
+    }
+
+    public void parse(TokenizerMatch tm){
+
+        int indent = Utils.getLineIndent(tm.token);
+        if (indent > -1 && indent <= currentListElement.indent) handleListDepthDecrease(indent);
+
+        if (tm.isGroup(TG_LIST)){
+            parseList(tm);
+            return;
+        }
+
+        currentListElement.parse(tm);
+    }
+
+    private void handleListDepthDecrease(int indent) {
+        while (true){
+            if (currentListElement.parent.indent <= indent){
+                currentListElement = currentListElement.parent;
+                return;
+            }
+            currentListElement = currentListElement.parent;
+        }
+    }
+
+    private void parseList(TokenizerMatch tm) {
+        String[] listSections = tm.getRegExpGroups();
+        int indent = listSections[0].length();
+        String type = listSections[1];
+
+        String title = getPartialTitle(listSections);
+
+        if (indent > currentListElement.indent){
+            // list dept increases
+            ListElement newElement = new ListElement(title, indent, currentListElement, type);
+            currentListElement.addContent(newElement);
+            currentListElement = newElement;
+            return;
+        }
+
+        if (indent > currentListElement.parent.indent){
+            // list depth is the same
+            ListElement newElement = new ListElement(title, indent, currentListElement.parent, type);
+            currentListElement.parent.addContent(newElement);
+            currentListElement = newElement;
+            return;
+        }
+
+        throw new RuntimeException("Impossible condition reached. Must be a bug!");
+    }
+
+    private String getPartialTitle(String[] listSections) {
+        return listSections.length > 2 ? listSections[2] : "";
+    }
+
 }