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info.bliki.wiki.filter.WPList Maven / Gradle / Ivy
package info.bliki.wiki.filter;
import info.bliki.wiki.model.Configuration;
import info.bliki.wiki.model.IWikiModel;
import info.bliki.wiki.tags.WPTag;
import info.bliki.wiki.tags.util.TagStack;
import java.io.IOException;
import java.util.ArrayList;
/**
* Represents a Wikipedia list. See http://meta.wikimedia.org/wiki/Help:List
*
* @see info.bliki.wiki.filter.WPListElement
*
*/
public class WPList extends WPTag implements PlainTextConvertable {
public final static char DL_DD_CHAR = ':';
public final static char DL_DT_CHAR = ';';
public final static char OL_CHAR = '#';
public final static char UL_CHAR = '*';
// public final static char DL_CHAR = '+';
private char[] fLastSequence;
private InternalList fNestedElements;
private ArrayList fInternalListStack;
public static class InternalList extends ArrayList {
/**
*
*/
private static final long serialVersionUID = -3760843632697162014L;
char fChar;
public char getChar() {
return fChar;
}
public InternalList(char ch) {
super();
fChar = ch;
}
}
public WPList() {
super("*#:;");
fLastSequence = null;
fNestedElements = null;
fInternalListStack = new ArrayList<>();
}
public boolean isEmpty() {
return fNestedElements == null;
}
public boolean add(WPListElement listElement) {
char[] sequence = listElement.getSequence();
int s1Length = 0;
int s2Length = sequence.length;
if (fLastSequence != null) {
s1Length = fLastSequence.length;
} else {
fNestedElements = new InternalList(sequence[0]);
fInternalListStack.add(fNestedElements);
}
InternalList list;
int min;
int level;
if (s1Length > s2Length) {
min = s2Length;
} else {
min = s1Length;
}
level = min;
for (int i = 0; i < min; i++) {
if (sequence[i] != fLastSequence[i]) {
if ((sequence[i] == DL_DT_CHAR || sequence[i] == DL_DD_CHAR)
&& (fLastSequence[i] == DL_DT_CHAR || fLastSequence[i] == DL_DD_CHAR)) {
continue;
}
level = i;
break;
}
}
popListStack(level);
if (level < s2Length) {
// push stack
for (int i = level; i < s2Length; i++) {
list = new InternalList(sequence[i]);
fInternalListStack.get(fInternalListStack.size() - 1).add(list);
fInternalListStack.add(list);
}
}
fInternalListStack.get(fInternalListStack.size() - 1).add(listElement);
fLastSequence = sequence;
return true;
}
private void popListStack(int level) {
if (fInternalListStack.size() > level) {
for (int i = fInternalListStack.size() - 1; i > level; i--) {
fInternalListStack.remove(i);
}
}
}
@Override
public void renderHTML(ITextConverter converter, Appendable buf, IWikiModel wikiModel) throws IOException {
if (!isEmpty()) {
fInternalListStack = null;
for (Object element : fNestedElements) {
if (element instanceof InternalList) {
InternalList subList = (InternalList) element;
beginHTMLTag(buf, subList);
renderSubListHTML(subList, converter, buf, wikiModel);
if (NEW_LINES) {
buf.append('\n');
}
if (subList.fChar == UL_CHAR) {
// bullet list
buf.append("");
} else if (subList.fChar == OL_CHAR) {
// numbered list
buf.append("");
} else {
// definition list
buf.append("");
}
} else {
TagStack stack = ((WPListElement) element).getTagStack();
if (stack != null) {
converter.nodesToText(stack.getNodeList(), buf, wikiModel);
}
}
}
}
}
private void beginHTMLTag(Appendable buf, InternalList subList) throws IOException {
if (NEW_LINES) {
buf.append('\n');
}
if (subList.fChar == UL_CHAR) {
// bullet list
buf.append("");
} else if (subList.fChar == OL_CHAR) {
// numbered list
buf.append("");
} else {
// definition list
buf.append("");
}
}
private void endHTMLTag(Appendable buf, InternalList subList) throws IOException {
if (NEW_LINES) {
buf.append('\n');
}
if (subList.fChar == UL_CHAR) {
// bullet list
buf.append(" ");
} else if (subList.fChar == OL_CHAR) {
// numbered list
buf.append("");
} else {
// definition list
buf.append("");
}
}
private void renderSubListHTML(InternalList list, ITextConverter converter, Appendable buf, IWikiModel wikiModel)
throws IOException {
if (list.size() == 0) {
return;
}
char currentChar = list.fChar;
char lastChar;
if (currentChar == DL_DD_CHAR) {
buf.append("\n");
} else if (currentChar == DL_DT_CHAR) {
buf.append("\n ");
} else {
buf.append("\n");
}
for (int i = 0; i < list.size(); i++) {
Object element = list.get(i);
if (element instanceof InternalList) {
InternalList subList = (InternalList) element;
beginHTMLTag(buf, subList);
// recursive call:
renderSubListHTML(subList, converter, buf, wikiModel);
endHTMLTag(buf, subList);
} else {
TagStack stack = ((WPListElement) element).getTagStack();
if (stack != null) {
converter.nodesToText(stack.getNodeList(), buf, wikiModel);
}
}
if ((i < list.size() - 1) && list.get(i + 1) instanceof WPListElement) {
lastChar = currentChar;
char[] temp = ((WPListElement) list.get(i + 1)).getSequence();
currentChar = temp[temp.length - 1];
switch (lastChar) {
case DL_DD_CHAR:
buf.append("");
break;
case DL_DT_CHAR:
buf.append(" ");
break;
default:
buf.append("");
break;
}
if (NEW_LINES) {
buf.append('\n');
}
switch (currentChar) {
case DL_DD_CHAR:
buf.append("");
break;
case DL_DT_CHAR:
buf.append(" ");
break;
default:
buf.append("");
break;
}
}
}
if (currentChar == DL_DD_CHAR) {
buf.append("");
} else if (currentChar == DL_DT_CHAR) {
buf.append(" ");
} else {
buf.append("");
}
}
@SuppressWarnings("unchecked")
@Override
public Object clone() {
WPList tt = (WPList) super.clone();
if (fNestedElements == null) {
tt.fNestedElements = null;
} else {
tt.fNestedElements = (InternalList) this.fNestedElements.clone();
}
tt.fInternalListStack = (ArrayList) this.fInternalListStack.clone();
if (fLastSequence == null) {
tt.fLastSequence = null;
} else {
tt.fLastSequence = new char[this.fLastSequence.length];
System.arraycopy(this.fLastSequence, 0, tt.fLastSequence, 0, this.fLastSequence.length);
}
return tt;
}
@Override
public boolean isReduceTokenStack() {
return true;
}
@Override
public String getParents() {
return Configuration.SPECIAL_BLOCK_TAGS;
}
public InternalList getNestedElements() {
return fNestedElements;
}
private void renderSubListPlainText(InternalList list, ITextConverter converter, Appendable buf, IWikiModel wikiModel)
throws IOException {
if (list.size() > 0) {
buf.append("\n");// ");
}
for (int i = 0; i < list.size(); i++) {
Object element = list.get(i);
if (element instanceof InternalList) {
InternalList subList = (InternalList) element;
// beginHTMLTag(buf, subList);
// recursive call:
renderSubListPlainText(subList, converter, buf, wikiModel);
// endHTMLTag(buf, subList);
} else {
TagStack stack = ((WPListElement) element).getTagStack();
if (stack != null) {
converter.nodesToText(stack.getNodeList(), buf, wikiModel);
}
}
if ((i < list.size() - 1) && list.get(i + 1) instanceof WPListElement) {
if (NEW_LINES) {
buf.append("\n");
}
}
}
}
@Override
public void renderPlainText(ITextConverter converter, Appendable buf, IWikiModel wikiModel) throws IOException {
if (!isEmpty()) {
fInternalListStack = null;
for (Object element : fNestedElements) {
if (element instanceof InternalList) {
InternalList subList = (InternalList) element;
renderSubListPlainText(subList, converter, buf, wikiModel);
} else {
TagStack stack = ((WPListElement) element).getTagStack();
if (stack != null) {
converter.nodesToText(stack.getNodeList(), buf, wikiModel);
}
}
}
if (NEW_LINES) {
buf.append("\n");
}
}
}
private void toStringSubList(InternalList list, Appendable buf) throws IOException {
for (Object element : list) {
if (element instanceof InternalList) {
InternalList subList = (InternalList) element;
buf.append(subList.fChar);
buf.append("-");
toStringSubList(subList, buf);
} else {
buf.append(element.toString());
buf.append("\n");
}
}
}
@Override
public String toString() {
if (!isEmpty()) {
try {
StringBuilder buf = new StringBuilder(fNestedElements.size() * 32);
for (Object element : fNestedElements) {
if (element instanceof InternalList) {
InternalList subList = (InternalList) element;
buf.append(subList.fChar);
buf.append("-");
toStringSubList(subList, buf);
} else {
buf.append(element.toString());
buf.append("\n");
}
}
return buf.toString();
} catch (IOException e) {
return "IOException";
}
}
return "";
}
}
