src/main/java/eu/svjatoslav/sixth/core/document/Document.java

   1 package eu.svjatoslav.sixth.core.document;
   2
   3 import eu.svjatoslav.commons.string.tokenizer.InvalidSyntaxException;
   4 import eu.svjatoslav.commons.string.tokenizer.Tokenizer;
   5 import eu.svjatoslav.commons.string.tokenizer.TokenizerMatch;
   6 import eu.svjatoslav.sixth.core.document.text.FormattedText;
   7
   8 import static eu.svjatoslav.commons.string.tokenizer.Terminator.TerminationStrategy.DROP;
   9 import static eu.svjatoslav.commons.string.tokenizer.Terminator.TerminationStrategy.PRESERVE;
  10 import static eu.svjatoslav.sixth.core.document.Helper.*;
  11 import static eu.svjatoslav.sixth.core.document.text.FormattedText.fromOrg;
  12
  13 public class Document {
  14     public final Heading rootHeading = new Heading( null , 0, null);
  15     private Heading currentHeading = rootHeading;
  16
  17     public Heading createHeading(FormattedText name, int targetLevel){
  18         if (currentHeading.level == (targetLevel - 1)){
  19             Heading newHeading = new Heading(name, targetLevel, currentHeading);
  20             currentHeading.addChild(newHeading);
  21             currentHeading = newHeading;
  22             return newHeading;
  23         }
  24
  25         if (currentHeading.level > (targetLevel - 1)){
  26             currentHeading = currentHeading.parent;
  27             return createHeading(name, targetLevel);
  28         }
  29
  30         try {
  31             Heading missingIntermediate = new Heading(fromOrg("<noname>"), currentHeading.level + 1, currentHeading);
  32             currentHeading.addChild(missingIntermediate);
  33             currentHeading = missingIntermediate;
  34             return createHeading(name, targetLevel);
  35         } catch (InvalidSyntaxException e) {
  36             throw new IllegalStateException("impossible situation");
  37         }
  38     }
  39
  40     public Heading getCurrentHeading(){
  41         return currentHeading;
  42     }
  43
  44     private void parseHeading(TokenizerMatch token) throws InvalidSyntaxException {
  45         System.out.println("HEADING!! " + token.token);
  46         int level = token.token.length()-1;
  47 //        createHeading(fromOrg(token.reminder), level);
  48     }
  49
  50     public void parse(String fileContentsAsString) throws InvalidSyntaxException {
  51         final Tokenizer tokenizer = new Tokenizer(fileContentsAsString);
  52
  53         // Org heading:
  54         // "*** Example Heading 1234"
  55         tokenizer.addTerminator(PRESERVE, "\\*+\\s.*\\r?\\n", TG_HEADING);
  56
  57         // Org list. Examples:
  58         // "   + my list title"
  59         // "+"
  60         tokenizer.addTerminator(PRESERVE, "\\s*(\\+|-)(\\s.*)?\\r?\\n", TG_LIST);
  61         tokenizer.addTerminator(PRESERVE, "\\s+\\*(\\s.*)?\\r?\\n", TG_LIST);
  62
  63         // DocumentProperty:
  64         // "#+OPTIONS: H:20 num:20"
  65         tokenizer.addTerminator(PRESERVE, "#\\+.+:.*\\r?\\n", TG_DOCUMENT_PROPERTY);
  66
  67         // newline
  68         tokenizer.addTerminator(DROP,"\\r?\\n", TG_NEWLINE);
  69
  70
  71         while (tokenizer.hasMoreContent()) {
  72             final TokenizerMatch tm = tokenizer.getNextToken();
  73
  74             if (tm.isGroup(TG_HEADING)){
  75                 parseHeading(tm);
  76                 continue;
  77             }
  78
  79             tokenizer.unreadToken();
  80             currentHeading.parse(tokenizer);
  81         }
  82
  83     }
  84 }