/**
* Retrieves the page labels from a PDF as an array of String objects.
* @param reader a PdfReader object that has the page labels you want to retrieve
* @return a String array or <code>null</code> if no page labels are present
*/
public static String[] GetPageLabels(PdfReader reader) {
int n = reader.NumberOfPages;
PdfDictionary dict = reader.Catalog;
PdfDictionary labels = (PdfDictionary)PdfReader.GetPdfObjectRelease(dict.Get(PdfName.PAGELABELS));
if (labels == null)
return null;
String[] labelstrings = new String[n];
Dictionary<int, PdfObject> numberTree = PdfNumberTree.ReadTree(labels);
int pagecount = 1;
String prefix = "";
char type = 'D';
for (int i = 0; i < n; i++) {
if (numberTree.ContainsKey(i)) {
PdfDictionary d = (PdfDictionary)PdfReader.GetPdfObjectRelease(numberTree[i]);
if (d.Contains(PdfName.ST)) {
pagecount = ((PdfNumber)d.Get(PdfName.ST)).IntValue;
}
else {
pagecount = 1;
}
if (d.Contains(PdfName.P)) {
prefix = ((PdfString)d.Get(PdfName.P)).ToUnicodeString();
}
if (d.Contains(PdfName.S)) {
type = ((PdfName)d.Get(PdfName.S)).ToString()[1];
}
else {
type = 'e';
}
}
switch (type) {
default:
labelstrings[i] = prefix + pagecount;
break;
case 'R':
labelstrings[i] = prefix + RomanNumberFactory.GetUpperCaseString(pagecount);
break;
case 'r':
labelstrings[i] = prefix + RomanNumberFactory.GetLowerCaseString(pagecount);
break;
case 'A':
labelstrings[i] = prefix + RomanAlphabetFactory.GetUpperCaseString(pagecount);
break;
case 'a':
labelstrings[i] = prefix + RomanAlphabetFactory.GetLowerCaseString(pagecount);
break;
case 'e':
labelstrings[i] = prefix;
break;
}
pagecount++;
}
return labelstrings;
}
/**
* Adds an <CODE>Object</CODE> to the <CODE>List</CODE>.
*
* @param o the object to add.
* @return true if adding the object succeeded
*/
public override bool Add(IElement o)
{
if (o is ListItem)
{
ListItem item = (ListItem)o;
Chunk chunk = new Chunk(preSymbol, symbol.Font);
chunk.Append(RomanNumberFactory.GetString(first + list.Count, lowercase));
chunk.Append(postSymbol);
item.ListSymbol = chunk;
item.SetIndentationLeft(symbolIndent, autoindent);
item.IndentationRight = 0;
list.Add(item);
return(true);
}
else if (o is List)
{
List nested = (List)o;
nested.IndentationLeft = nested.IndentationLeft + symbolIndent;
first--;
list.Add(nested);
return(true);
}
return(false);
}
/**
*
* @param result
* @param itemNr
* @param listLevel
* @throws IOException
* @since 2.1.3
*/
protected void WriteListTextBlock(Stream result, int itemNr, RtfListLevel listLevel)
{
byte[] t;
result.Write(OPEN_GROUP, 0, OPEN_GROUP.Length);
result.Write(RtfList.LIST_TEXT, 0, RtfList.LIST_TEXT.Length);
result.Write(RtfParagraph.PARAGRAPH_DEFAULTS, 0, RtfParagraph.PARAGRAPH_DEFAULTS.Length);
if (this.inTable)
{
result.Write(RtfParagraph.IN_TABLE, 0, RtfParagraph.IN_TABLE.Length);
}
result.Write(RtfFontList.FONT_NUMBER, 0, RtfFontList.FONT_NUMBER.Length);
if (listLevel.GetListType() != RtfListLevel.LIST_TYPE_BULLET)
{
result.Write(t = IntToByteArray(listLevel.GetFontNumber().GetFontNumber()), 0, t.Length);
}
else
{
result.Write(t = IntToByteArray(listLevel.GetFontBullet().GetFontNumber()), 0, t.Length);
}
listLevel.WriteIndentation(result);
result.Write(DELIMITER, 0, DELIMITER.Length);
if (listLevel.GetListType() != RtfListLevel.LIST_TYPE_BULLET)
{
switch (listLevel.GetListType())
{
case RtfListLevel.LIST_TYPE_NUMBERED: result.Write(t = IntToByteArray(itemNr), 0, t.Length); break;
case RtfListLevel.LIST_TYPE_UPPER_LETTERS: result.Write(t = DocWriter.GetISOBytes(RomanAlphabetFactory.GetUpperCaseString(itemNr)), 0, t.Length); break;
case RtfListLevel.LIST_TYPE_LOWER_LETTERS: result.Write(t = DocWriter.GetISOBytes(RomanAlphabetFactory.GetLowerCaseString(itemNr)), 0, t.Length); break;
case RtfListLevel.LIST_TYPE_UPPER_ROMAN: result.Write(t = DocWriter.GetISOBytes(RomanNumberFactory.GetUpperCaseString(itemNr)), 0, t.Length); break;
case RtfListLevel.LIST_TYPE_LOWER_ROMAN: result.Write(t = DocWriter.GetISOBytes(RomanNumberFactory.GetLowerCaseString(itemNr)), 0, t.Length); break;
}
result.Write(LIST_NUMBER_END, 0, LIST_NUMBER_END.Length);
}
else
{
this.document.FilterSpecialChar(result, listLevel.GetBulletCharacter(), true, false);
}
result.Write(TAB, 0, TAB.Length);
result.Write(CLOSE_GROUP, 0, CLOSE_GROUP.Length);
}
/// <summary>
/// @throws IOException
/// @since 2.1.3
/// </summary>
/// <param name="result"></param>
/// <param name="itemNr"></param>
/// <param name="listLevel"></param>
protected void WriteListTextBlock(Stream result, int itemNr, RtfListLevel listLevel)
{
byte[] t;
result.Write(OpenGroup, 0, OpenGroup.Length);
result.Write(ListText, 0, ListText.Length);
result.Write(RtfPhrase.ParagraphDefaults, 0, RtfPhrase.ParagraphDefaults.Length);
if (InTable)
{
result.Write(RtfPhrase.InTable, 0, RtfPhrase.InTable.Length);
}
result.Write(RtfFontList.FontNumber, 0, RtfFontList.FontNumber.Length);
if (listLevel.GetListType() != RtfListLevel.LIST_TYPE_BULLET)
{
result.Write(t = IntToByteArray(listLevel.GetFontNumber().GetFontNumber()), 0, t.Length);
}
else
{
result.Write(t = IntToByteArray(listLevel.GetFontBullet().GetFontNumber()), 0, t.Length);
}
listLevel.WriteIndentation(result);
result.Write(Delimiter, 0, Delimiter.Length);
if (listLevel.GetListType() != RtfListLevel.LIST_TYPE_BULLET)
{
switch (listLevel.GetListType())
{
case RtfListLevel.LIST_TYPE_NUMBERED: result.Write(t = IntToByteArray(itemNr), 0, t.Length); break;
case RtfListLevel.LIST_TYPE_UPPER_LETTERS: result.Write(t = DocWriter.GetIsoBytes(RomanAlphabetFactory.GetUpperCaseString(itemNr)), 0, t.Length); break;
case RtfListLevel.LIST_TYPE_LOWER_LETTERS: result.Write(t = DocWriter.GetIsoBytes(RomanAlphabetFactory.GetLowerCaseString(itemNr)), 0, t.Length); break;
case RtfListLevel.LIST_TYPE_UPPER_ROMAN: result.Write(t = DocWriter.GetIsoBytes(RomanNumberFactory.GetUpperCaseString(itemNr)), 0, t.Length); break;
case RtfListLevel.LIST_TYPE_LOWER_ROMAN: result.Write(t = DocWriter.GetIsoBytes(RomanNumberFactory.GetLowerCaseString(itemNr)), 0, t.Length); break;
}
result.Write(ListNumberEnd, 0, ListNumberEnd.Length);
}
else
{
Document.FilterSpecialChar(result, listLevel.GetBulletCharacter(), true, false);
}
result.Write(Tab, 0, Tab.Length);
result.Write(CloseGroup, 0, CloseGroup.Length);
}
/// <summary>
/// Retrieves the page labels from a PDF as an array of String objects.
/// </summary>
/// <param name="reader">a PdfReader object that has the page labels you want to retrieve</param>
/// <returns>a String array or null if no page labels are present</returns>
public static string[] GetPageLabels(PdfReader reader)
{
var n = reader.NumberOfPages;
var dict = reader.Catalog;
var labels = (PdfDictionary)PdfReader.GetPdfObjectRelease(dict.Get(PdfName.Pagelabels));
if (labels == null)
{
return(null);
}
var labelstrings = new string[n];
var numberTree = PdfNumberTree.ReadTree(labels);
var pagecount = 1;
var prefix = "";
var type = 'D';
for (var i = 0; i < n; i++)
{
if (numberTree.ContainsKey(i))
{
var d = (PdfDictionary)PdfReader.GetPdfObjectRelease((PdfObject)numberTree[i]);
if (d.Contains(PdfName.St))
{
pagecount = ((PdfNumber)d.Get(PdfName.St)).IntValue;
}
else
{
pagecount = 1;
}
if (d.Contains(PdfName.P))
{
prefix = ((PdfString)d.Get(PdfName.P)).ToUnicodeString();
}
if (d.Contains(PdfName.S))
{
type = ((PdfName)d.Get(PdfName.S)).ToString()[1];
}
}
switch (type)
{
default:
labelstrings[i] = prefix + pagecount;
break;
case 'R':
labelstrings[i] = prefix + RomanNumberFactory.GetUpperCaseString(pagecount);
break;
case 'r':
labelstrings[i] = prefix + RomanNumberFactory.GetLowerCaseString(pagecount);
break;
case 'A':
labelstrings[i] = prefix + RomanAlphabetFactory.GetUpperCaseString(pagecount);
break;
case 'a':
labelstrings[i] = prefix + RomanAlphabetFactory.GetLowerCaseString(pagecount);
break;
}
pagecount++;
}
return(labelstrings);
}
