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 String name;
+ public final FormattedText name;
public final int level;
public final Heading parent;
+ private final List<Heading> children = new ArrayList<>();
- public Heading(String name, int level, Heading parent){
+ 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;
this.parent = parent;
}
+ public void addChild(Heading heading){
+ children.add(heading);
+ }
+
+ public List<Heading> getChildren(){
+ 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.parent.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){
+ 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;
+ }
+
}