X-Git-Url: http://www2.svjatoslav.eu/gitweb/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Feu%2Fsvjatoslav%2Fsixth%2Fcore%2Fdocument%2FHeading.java;h=f4a95130d65ea9ad0066797820a8518f300e6331;hb=9522b4873da0b7872cf033c0762a58a73c1ba517;hp=6159e1d689d5870b0243c8a08851a979366c6e58;hpb=f9ba1a34f75fc8bfe9e6507762947566c8e22bce;p=sixth.git

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..f4a9513 100644
--- a/src/main/java/eu/svjatoslav/sixth/core/document/Heading.java
+++ b/src/main/java/eu/svjatoslav/sixth/core/document/Heading.java
@@ -1,16 +1,25 @@
 package eu.svjatoslav.sixth.core.document;
 
+import eu.svjatoslav.commons.string.String2;
+import eu.svjatoslav.commons.string.tokenizer.Tokenizer;
+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 +34,111 @@ 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){
+
+        if (tm.isGroup(TG_LIST)){
+            parseList(tm);
+            return;
+        }
+
+        currentListElement.parse(tm);
+    }
+
+    private void parseList(TokenizerMatch tm) {
+        String[] listSections = tm.getRegExpGroups();
+        int indent = listSections[0].length();
+        String type = listSections[1];
+        FormattedText title = FormattedText.fromOrg(parseFullListTitle(getPartialTitle(listSections), tm.getTokenizer(), indent));
+
+        if (indent > currentListElement.indent){
+            // list dept increases
+            ListElement newElement = new ListElement(title, indent, currentListElement, type);
+            currentListElement.addContent(newElement);
+            currentListElement = newElement;
+            return;
+        }
+
+        if (indent == currentListElement.indent){
+            // list depth is the same
+            ListElement newElement = new ListElement(title, indent, currentListElement.parent, type);
+            currentListElement.parent.addContent(newElement);
+            currentListElement = newElement;
+            return;
+        }
+
+        // list dept decreases
+        while (true){
+            if (currentListElement.parent.indent <= indent){
+                if (currentListElement.parent.indent < 0){
+                    // reached first depth level, cannot go any deeper.
+                    // This special situation arisesbb only when lint indents are not properly aligned.
+                    // That is, document structure is incorrect.
+                    ListElement newElement = new ListElement(title, indent, currentListElement.parent, type);
+                    currentListElement.parent.addContent(newElement);
+                    currentListElement = newElement;
+                    return;
+                }
+
+                ListElement newElement = new ListElement(title, indent, currentListElement.parent.parent, type);
+                currentListElement.parent.parent.addContent(newElement);
+                currentListElement = newElement;
+                return;
+            }
+            currentListElement = currentListElement.parent;
+        }
+
+    }
+
+    private String getPartialTitle(String[] listSections) {
+        return listSections.length > 2 ? listSections[2] : "";
+    }
+
+    private String parseFullListTitle(String partialTitle, Tokenizer tokenizer, int listIndent){
+        StringBuilder sb = new StringBuilder();
+        sb.append(partialTitle);
+
+        while (tokenizer.hasMoreContent()){
+            final TokenizerMatch tm = tokenizer.getNextToken();
+
+            if (isContentContinuation(tm, listIndent, Helper.TG_NORMAL_TEXT)){
+                String titleContinuation = tm.token.substring(listIndent).trim();
+                sb.append("\n").append(titleContinuation);
+                continue;
+            }
+
+            tokenizer.unreadToken();
+            break;
+        }
+
+        return sb.toString();
+    }
+
+    public static boolean isContentContinuation(TokenizerMatch tm, int requiredIndent, String requiredGroup) {
+        if (tm.token.length() <= requiredIndent) return false;
+
+        return tm.isGroup(requiredGroup) && tm.token.substring(0, requiredIndent +1).trim().length() == 0;
+    }
+
 }