package net.java.textilej.parser.markup.textile.block;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import net.java.textilej.parser.Attributes;
import net.java.textilej.parser.QuoteAttributes;
import net.java.textilej.parser.DocumentBuilder.BlockType;
import net.java.textilej.parser.markup.Block;
import net.java.textilej.parser.markup.textile.Textile;
/**
* quoted text block, matches blocks that start with <code>bc. </code>.
* Creates an extended block type of {@link ParagraphBlock paragraph}.
*
* @author dgreen
*/
public class QuoteBlock extends Block {
private static final int LINE_REMAINDER_GROUP = Textile.ATTRIBUTES_BLOCK_GROUP_COUNT+3;
private static final int CITATION_GROUP = Textile.ATTRIBUTES_BLOCK_GROUP_COUNT+2;
private static final int EXTENDED_GROUP = Textile.ATTRIBUTES_BLOCK_GROUP_COUNT+1;
static final Pattern startPattern = Pattern.compile("bq"+Textile.REGEX_BLOCK_ATTRIBUTES+"\\.(\\.)?(?::(https?://[^\\s]*))?\\s+(.*)");
private boolean extended;
private boolean paraOpen;
private int blockLineCount = 0;
private Matcher matcher;
public QuoteBlock() {
}
@Override
public int processLineContent(String line,int offset) {
if (blockLineCount == 0) {
QuoteAttributes attributes = new QuoteAttributes();
Textile.configureAttributes(attributes,matcher, 1,true);
attributes.setCitation(matcher.group(CITATION_GROUP));
offset = matcher.start(LINE_REMAINDER_GROUP);
extended = matcher.group(EXTENDED_GROUP) != null;
builder.beginBlock(BlockType.QUOTE, attributes);
builder.beginBlock(BlockType.PARAGRAPH, new Attributes());
paraOpen = true;
}
if (dialect.isEmptyLine(line)) {
if (!extended) {
setClosed(true);
return 0;
} else {
if (paraOpen) {
builder.endBlock(); // para
paraOpen = false;
}
return 0;
}
} else if (extended && Textile.explicitBlockBegins(line,offset)) {
setClosed(true);
return offset;
}
if (blockLineCount != 0) {
if (paraOpen) {
builder.lineBreak();
} else {
builder.beginBlock(BlockType.PARAGRAPH, new Attributes());
paraOpen = true;
}
}
++blockLineCount;
getDialect().emitMarkupLine(getParser(),state,line, offset);
return -1;
}
@Override
public boolean canStart(String line, int lineOffset) {
blockLineCount = 0;
if (lineOffset == 0) {
matcher = startPattern.matcher(line);
return matcher.matches();
} else {
matcher = null;
return false;
}
}
@Override
public void setClosed(boolean closed) {
if (closed && !isClosed()) {
if (paraOpen) {
builder.endBlock(); // para
paraOpen = false;
}
builder.endBlock(); // quote
}
super.setClosed(closed);
}
}