private static void ParseCid(String cmapName, AbstractCMap cmap, ICidLocation location, int level) {
if (level >= MAXLEVEL)
return;
PRTokeniser inp = location.GetLocation(cmapName);
try {
List<PdfObject> list = new List<PdfObject>();
PdfContentParser cp = new PdfContentParser(inp);
int maxExc = 50;
while (true) {
try {
cp.Parse(list);
}
catch {
if (--maxExc < 0)
break;
continue;
}
if (list.Count == 0)
break;
String last = list[list.Count - 1].ToString();
if (level == 0 && list.Count == 3 && last.Equals(DEF)) {
PdfObject key = list[0];
if (PdfName.REGISTRY.Equals(key))
cmap.Registry = list[1].ToString();
else if (PdfName.ORDERING.Equals(key))
cmap.Ordering = list[1].ToString();
else if (CMAPNAME.Equals(key))
cmap.Name = list[1].ToString();
else if (PdfName.SUPPLEMENT.Equals(key)) {
try {
cmap.Supplement = ((PdfNumber)list[1]).IntValue;
}
catch {}
}
}
else if ((last.Equals(ENDCIDCHAR) || last.Equals(ENDBFCHAR)) && list.Count >= 3) {
int lmax = list.Count - 2;
for (int k = 0; k < lmax; k += 2) {
if (list[k] is PdfString) {
cmap.AddChar((PdfString)list[k], list[k + 1]);
}
}
}
else if ((last.Equals(ENDCIDRANGE) || last.Equals(ENDBFRANGE)) && list.Count >= 4) {
int lmax = list.Count - 3;
for (int k = 0; k < lmax; k += 3) {
if (list[k] is PdfString && list[k + 1] is PdfString) {
cmap.AddRange((PdfString)list[k], (PdfString)list[k + 1], list[k + 2]);
}
}
}
else if (last.Equals(USECMAP) && list.Count == 2 && list[0] is PdfName) {
ParseCid(PdfName.DecodeName(list[0].ToString()), cmap, location, level + 1);
}
}
}
finally {
inp.Close();
}
}
private void FillMetrics(byte[] touni, IntHashtable widths, int dw) {
PdfContentParser ps = new PdfContentParser(new PRTokeniser(new RandomAccessFileOrArray(new RandomAccessSourceFactory().CreateSource(touni))));
PdfObject ob = null;
bool notFound = true;
int nestLevel = 0;
int maxExc = 50;
while ((notFound || nestLevel > 0)) {
try {
ob = ps.ReadPRObject();
}
catch {
if (--maxExc < 0)
break;
continue;
}
if (ob == null)
break;
if (ob.Type == PdfContentParser.COMMAND_TYPE) {
if (ob.ToString().Equals("begin")) {
notFound = false;
nestLevel++;
}
else if (ob.ToString().Equals("end")) {
nestLevel--;
}
else if (ob.ToString().Equals("beginbfchar")) {
while (true) {
PdfObject nx = ps.ReadPRObject();
if (nx.ToString().Equals("endbfchar"))
break;
String cid = DecodeString((PdfString)nx);
String uni = DecodeString((PdfString)ps.ReadPRObject());
if (uni.Length == 1) {
int cidc = (int)cid[0];
int unic = (int)uni[uni.Length - 1];
int w = dw;
if (widths.ContainsKey(cidc))
w = widths[cidc];
metrics[unic] = new int[]{cidc, w};
}
}
}
else if (ob.ToString().Equals("beginbfrange")) {
while (true) {
PdfObject nx = ps.ReadPRObject();
if (nx.ToString().Equals("endbfrange"))
break;
String cid1 = DecodeString((PdfString)nx);
String cid2 = DecodeString((PdfString)ps.ReadPRObject());
int cid1c = (int)cid1[0];
int cid2c = (int)cid2[0];
PdfObject ob2 = ps.ReadPRObject();
if (ob2.IsString()) {
String uni = DecodeString((PdfString)ob2);
if (uni.Length == 1) {
int unic = (int)uni[uni.Length - 1];
for (; cid1c <= cid2c; cid1c++, unic++) {
int w = dw;
if (widths.ContainsKey(cid1c))
w = widths[cid1c];
metrics[unic] = new int[]{cid1c, w};
}
}
}
else {
PdfArray a = (PdfArray)ob2;
for (int j = 0; j < a.Size; ++j, ++cid1c) {
String uni = DecodeString(a.GetAsString(j));
if (uni.Length == 1) {
int unic = (int)uni[uni.Length - 1];
int w = dw;
if (widths.ContainsKey(cid1c))
w = widths[cid1c];
metrics[unic] = new int[]{cid1c, w};
}
}
}
}
}
}
}
}
private void FillMetrics(byte[] touni, IntHashtable widths, int dw)
{
PdfContentParser ps = new PdfContentParser(new PRTokeniser(touni));
PdfObject ob = null;
PdfObject last = null;
while ((ob = ps.ReadPRObject()) != null)
{
if (ob.Type == PdfContentParser.COMMAND_TYPE)
{
if (ob.ToString().Equals("beginbfchar"))
{
int n = ((PdfNumber)last).IntValue;
for (int k = 0; k < n; ++k)
{
String cid = DecodeString((PdfString)ps.ReadPRObject());
String uni = DecodeString((PdfString)ps.ReadPRObject());
if (uni.Length == 1)
{
int cidc = (int)cid[0];
int unic = (int)uni[uni.Length - 1];
int w = dw;
if (widths.ContainsKey(cidc))
{
w = widths[cidc];
}
metrics[unic] = new int[] { cidc, w };
}
}
}
else if (ob.ToString().Equals("beginbfrange"))
{
int n = ((PdfNumber)last).IntValue;
for (int k = 0; k < n; ++k)
{
String cid1 = DecodeString((PdfString)ps.ReadPRObject());
String cid2 = DecodeString((PdfString)ps.ReadPRObject());
int cid1c = (int)cid1[0];
int cid2c = (int)cid2[0];
PdfObject ob2 = ps.ReadPRObject();
if (ob2.IsString())
{
String uni = DecodeString((PdfString)ob2);
if (uni.Length == 1)
{
int unic = (int)uni[uni.Length - 1];
for (; cid1c <= cid2c; cid1c++, unic++)
{
int w = dw;
if (widths.ContainsKey(cid1c))
{
w = widths[cid1c];
}
metrics[unic] = new int[] { cid1c, w };
}
}
}
else
{
ArrayList ar = ((PdfArray)ob2).ArrayList;
for (int j = 0; j < ar.Count; ++j, ++cid1c)
{
String uni = DecodeString((PdfString)ar[j]);
if (uni.Length == 1)
{
int unic = (int)uni[uni.Length - 1];
int w = dw;
if (widths.ContainsKey(cid1c))
{
w = widths[cid1c];
}
metrics[unic] = new int[] { cid1c, w };
}
}
}
}
}
}
else
{
last = ob;
}
}
}
/**
* Parses the samples of the image from the underlying content parser, accounting for filters
* The parser must be positioned immediately after the ID operator that ends the inline image's dictionary.
* The parser will be left positioned immediately following the EI operator.
* <b>Note:</b>This implementation does not actually apply the filters at this time
* @param imageDictionary the dictionary of the inline image
* @param ps the content parser
* @return the samples of the image
* @throws IOException if anything bad happens during parsing
*/
private static byte[] ParseInlineImageSamples(PdfDictionary imageDictionary, PdfDictionary colorSpaceDic, PdfContentParser ps)
{
// by the time we get to here, we have already parsed the ID operator
if (!imageDictionary.Contains(PdfName.FILTER)){
return ParseUnfilteredSamples(imageDictionary, colorSpaceDic, ps);
}
// read all content until we reach an EI operator surrounded by whitespace.
// The following algorithm has two potential issues: what if the image stream
// contains <ws>EI<ws> ?
// Plus, there are some streams that don't have the <ws> before the EI operator
// it sounds like we would have to actually decode the content stream, which
// I'd rather avoid right now.
MemoryStream baos = new MemoryStream();
MemoryStream accumulated = new MemoryStream();
int ch;
int found = 0;
PRTokeniser tokeniser = ps.GetTokeniser();
byte[] ff = null;
while ((ch = tokeniser.Read()) != -1){
if (found == 0 && PRTokeniser.IsWhitespace(ch)){
found++;
accumulated.WriteByte((byte)ch);
} else if (found == 1 && ch == 'E'){
found++;
accumulated.WriteByte((byte)ch);
} else if (found == 1 && PRTokeniser.IsWhitespace(ch)){
// this clause is needed if we have a white space character that is part of the image data
// followed by a whitespace character that precedes the EI operator. In this case, we need
// to flush the first whitespace, then treat the current whitespace as the first potential
// character for the end of stream check. Note that we don't increment 'found' here.
baos.Write(ff = accumulated.ToArray(), 0, ff.Length);
accumulated.SetLength(0);
accumulated.WriteByte((byte)ch);
} else if (found == 2 && ch == 'I'){
found++;
accumulated.WriteByte((byte)ch);
} else if (found == 3 && PRTokeniser.IsWhitespace(ch)){
return baos.ToArray();
} else {
baos.Write(ff = accumulated.ToArray(), 0, ff.Length);
accumulated.SetLength(0);
baos.WriteByte((byte)ch);
found = 0;
}
}
throw new InlineImageParseException("Could not find image data or EI");
}
/**
* Parses the samples of the image from the underlying content parser, ignoring all filters.
* The parser must be positioned immediately after the ID operator that ends the inline image's dictionary.
* The parser will be left positioned immediately following the EI operator.
* This is primarily useful if no filters have been applied.
* @param imageDictionary the dictionary of the inline image
* @param ps the content parser
* @return the samples of the image
* @throws IOException if anything bad happens during parsing
*/
private static byte[] ParseUnfilteredSamples(PdfDictionary imageDictionary, PdfDictionary colorSpaceDic, PdfContentParser ps)
{
// special case: when no filter is specified, we just read the number of bits
// per component, multiplied by the width and height.
if (imageDictionary.Contains(PdfName.FILTER))
throw new ArgumentException("Dictionary contains filters");
PdfNumber h = imageDictionary.GetAsNumber(PdfName.HEIGHT);
int bytesToRead = ComputeBytesPerRow(imageDictionary, colorSpaceDic) * h.IntValue;
byte[] bytes = new byte[bytesToRead];
PRTokeniser tokeniser = ps.GetTokeniser();
int shouldBeWhiteSpace = tokeniser.Read(); // skip next character (which better be a whitespace character - I suppose we could check for this)
// from the PDF spec: Unless the image uses ASCIIHexDecode or ASCII85Decode as one of its filters, the ID operator shall be followed by a single white-space character, and the next character shall be interpreted as the first byte of image data.
// unfortunately, we've seen some PDFs where there is no space following the ID, so we have to capture this case and handle it
int startIndex = 0;
if (!PRTokeniser.IsWhitespace(shouldBeWhiteSpace) || shouldBeWhiteSpace == 0){ // tokeniser treats 0 as whitespace, but for our purposes, we shouldn't)
bytes[0] = (byte)shouldBeWhiteSpace;
startIndex++;
}
for (int i = startIndex; i < bytesToRead; i++){
int ch = tokeniser.Read();
if (ch == -1)
throw new InlineImageParseException("End of content stream reached before end of image data");
bytes[i] = (byte)ch;
}
PdfObject ei = ps.ReadPRObject();
if (!ei.ToString().Equals("EI"))
throw new InlineImageParseException("EI not found after end of image data");
return bytes;
}
/**
* Parses the samples of the image from the underlying content parser, ignoring all filters.
* The parser must be positioned immediately after the ID operator that ends the inline image's dictionary.
* The parser will be left positioned immediately following the EI operator.
* This is primarily useful if no filters have been applied.
* @param imageDictionary the dictionary of the inline image
* @param ps the content parser
* @return the samples of the image
* @throws IOException if anything bad happens during parsing
*/
private static byte[] ParseUnfilteredSamples(PdfDictionary imageDictionary, PdfContentParser ps) {
// special case: when no filter is specified, we just read the number of bits
// per component, multiplied by the width and height.
if (imageDictionary.Contains(PdfName.FILTER))
throw new ArgumentException("Dictionary contains filters");
PdfNumber h = imageDictionary.GetAsNumber(PdfName.HEIGHT);
int bytesToRead = ComputeBytesPerRow(imageDictionary) * h.IntValue;
byte[] bytes = new byte[bytesToRead];
PRTokeniser tokeniser = ps.GetTokeniser();
tokeniser.Read(); // skip next character (which better be a whitespace character - I suppose we could check for this)
for (int i = 0; i < bytesToRead; i++){
int ch = tokeniser.Read();
if (ch == -1)
throw new InlineImageParseException("End of content stream reached before end of image data");
bytes[i] = (byte)ch;
}
PdfObject ei = ps.ReadPRObject();
if (!ei.ToString().Equals("EI"))
throw new InlineImageParseException("EI not found after end of image data");
return bytes;
}
/**
* Parses the next inline image dictionary from the parser. The parser must be positioned immediately following the EI operator.
* The parser will be left with position immediately following the whitespace character that follows the ID operator that ends the inline image dictionary.
* @param ps the parser to extract the embedded image information from
* @return the dictionary for the inline image, with any abbreviations converted to regular image dictionary keys and values
* @throws IOException if the parse fails
*/
private static PdfDictionary ParseInlineImageDictionary(PdfContentParser ps)
{
// by the time we get to here, we have already parsed the BI operator
PdfDictionary dictionary = new PdfDictionary();
for (PdfObject key = ps.ReadPRObject(); key != null && !"ID".Equals(key.ToString()); key = ps.ReadPRObject()){
PdfObject value = ps.ReadPRObject();
PdfName resolvedKey;
inlineImageEntryAbbreviationMap.TryGetValue((PdfName)key, out resolvedKey);
if (resolvedKey == null)
resolvedKey = (PdfName)key;
dictionary.Put(resolvedKey, GetAlternateValue(resolvedKey, value));
}
int ch = ps.GetTokeniser().Read();
if (!PRTokeniser.IsWhitespace(ch))
throw new IOException("Unexpected character " + ch + " found after ID in inline image");
return dictionary;
}
/**
* Processes PDF syntax.
* <b>Note:</b> If you re-use a given {@link PdfContentStreamProcessor}, you must call {@link PdfContentStreamProcessor#reset()}
* @param contentBytes the bytes of a content stream
* @param resources the resources that come with the content stream
*/
public void ProcessContent(byte[] contentBytes, PdfDictionary resources){
this.resources.Push(resources);
PRTokeniser tokeniser = new PRTokeniser(new RandomAccessFileOrArray(new RandomAccessSourceFactory().CreateSource(contentBytes)));
PdfContentParser ps = new PdfContentParser(tokeniser);
List<PdfObject> operands = new List<PdfObject>();
while (ps.Parse(operands).Count > 0){
PdfLiteral oper = (PdfLiteral)operands[operands.Count-1];
if ("BI".Equals(oper.ToString())){
// we don't call invokeOperator for embedded images - this is one area of the PDF spec that is particularly nasty and inconsistent
PdfDictionary colorSpaceDic = resources != null ? resources.GetAsDict(PdfName.COLORSPACE) : null;
ImageRenderInfo renderInfo = ImageRenderInfo.CreateForEmbeddedImage(Gs().ctm, InlineImageUtils.ParseInlineImage(ps, colorSpaceDic), colorSpaceDic);
renderListener.RenderImage(renderInfo);
} else {
InvokeOperator(oper, operands);
}
}
this.resources.Pop();
}
/**
* Parses an inline image from the provided content parser. The parser must be positioned immediately following the BI operator in the content stream.
* The parser will be left with current position immediately following the EI operator that terminates the inline image
* @param ps the content parser to use for reading the image.
* @return the parsed image
* @throws IOException if anything goes wring with the parsing
* @throws InlineImageParseException if parsing of the inline image failed due to issues specific to inline image processing
*/
public static PdfImageObject ParseInlineImage(PdfContentParser ps, PdfDictionary colorSpaceDic)
{
PdfDictionary inlineImageDictionary = ParseInlineImageDictionary(ps);
byte[] samples = ParseInlineImageSamples(inlineImageDictionary, colorSpaceDic, ps);
return new PdfImageObject(inlineImageDictionary, samples);
}
private void FillMetrics(byte[] touni, IntHashtable widths, int dw)
{
PdfContentParser ps = new PdfContentParser(new PRTokeniser(touni));
PdfObject ob = null;
PdfObject last = null;
while ((ob = ps.ReadPRObject()) != null) {
if (ob.Type == PdfContentParser.COMMAND_TYPE) {
if (ob.ToString().Equals("beginbfchar")) {
int n = ((PdfNumber)last).IntValue;
for (int k = 0; k < n; ++k) {
String cid = DecodeString((PdfString)ps.ReadPRObject());
String uni = DecodeString((PdfString)ps.ReadPRObject());
if (uni.Length == 1) {
int cidc = (int)cid[0];
int unic = (int)uni[uni.Length - 1];
int w = dw;
if (widths.ContainsKey(cidc))
w = widths[cidc];
metrics[unic] = new int[]{cidc, w};
}
}
}
else if (ob.ToString().Equals("beginbfrange")) {
int n = ((PdfNumber)last).IntValue;
for (int k = 0; k < n; ++k) {
String cid1 = DecodeString((PdfString)ps.ReadPRObject());
String cid2 = DecodeString((PdfString)ps.ReadPRObject());
int cid1c = (int)cid1[0];
int cid2c = (int)cid2[0];
PdfObject ob2 = ps.ReadPRObject();
if (ob2.IsString()) {
String uni = DecodeString((PdfString)ob2);
if (uni.Length == 1) {
int unic = (int)uni[uni.Length - 1];
for (; cid1c <= cid2c; cid1c++, unic++) {
int w = dw;
if (widths.ContainsKey(cid1c))
w = widths[cid1c];
metrics[unic] = new int[]{cid1c, w};
}
}
}
else {
ArrayList ar = ((PdfArray)ob2).ArrayList;
for (int j = 0; j < ar.Count; ++j, ++cid1c) {
String uni = DecodeString((PdfString)ar[j]);
if (uni.Length == 1) {
int unic = (int)uni[uni.Length - 1];
int w = dw;
if (widths.ContainsKey(cid1c))
w = widths[cid1c];
metrics[unic] = new int[]{cid1c, w};
}
}
}
}
}
}
else
last = ob;
}
}
/// <summary>
/// Parses a stream object and removes OCGs. </summary>
/// <param name="stream"> a stream object </param>
/// <param name="resources"> the resources dictionary of that object (containing info about the OCGs) </param>
public virtual void Parse(PRStream stream, PdfDictionary resources) {
baos = new MemoryStream();
properties = resources.GetAsDict(PdfName.PROPERTIES);
xobj = new HashSet2<PdfName>();
PdfDictionary xobjects = resources.GetAsDict(PdfName.XOBJECT);
if (xobjects != null) {
// remove XObject (form or image) that belong to an OCG that needs to be removed
foreach (PdfName name in xobjects.Keys) {
PRStream xobject = (PRStream) xobjects.GetAsStream(name);
PdfDictionary oc = xobject.GetAsDict(PdfName.OC);
if (oc != null) {
PdfString ocname = oc.GetAsString(PdfName.NAME);
if (ocname != null && ocgs.Contains(ocname.ToString())) {
xobj.Add(name);
}
}
}
foreach (PdfName name in xobj) {
xobjects.Remove(name);
}
}
// parse the content stream
byte[] contentBytes = PdfReader.GetStreamBytes(stream);
PRTokeniser tokeniser = new PRTokeniser(new RandomAccessFileOrArray(contentBytes));
PdfContentParser ps = new PdfContentParser(tokeniser);
List<PdfObject> operands = new List<PdfObject>();
while (ps.Parse(operands).Count > 0) {
PdfLiteral @operator = (PdfLiteral) operands[operands.Count - 1];
ProcessOperator(this, @operator, operands);
}
baos.Flush();
baos.Close();
stream.SetData(baos.GetBuffer());
}
private void FillMetrics(byte[] touni, IntHashtable widths, int dw)
{
PdfContentParser ps = new PdfContentParser(new PRTokeniser(touni));
PdfObject ob = null;
PdfObject last = null;
bool notFound = true;
int nestLevel = 0;
while ((notFound || nestLevel > 0) && (ob = ps.ReadPRObject()) != null)
{
if (ob.Type == PdfContentParser.COMMAND_TYPE)
{
if (ob.ToString().Equals("begin"))
{
notFound = false;
nestLevel++;
}
else if (ob.ToString().Equals("end"))
{
nestLevel--;
}
else if (ob.ToString().Equals("beginbfchar"))
{
int n = ((PdfNumber)last).IntValue;
for (int k = 0; k < n; ++k)
{
String cid = DecodeString((PdfString)ps.ReadPRObject());
String uni = DecodeString((PdfString)ps.ReadPRObject());
if (uni.Length == 1)
{
int cidc = (int)cid[0];
int unic = (int)uni[uni.Length - 1];
int w = dw;
if (widths.ContainsKey(cidc))
{
w = widths[cidc];
}
metrics[unic] = new int[] { cidc, w };
}
}
}
else if (ob.ToString().Equals("beginbfrange"))
{
int n = ((PdfNumber)last).IntValue;
for (int k = 0; k < n; ++k)
{
String cid1 = DecodeString((PdfString)ps.ReadPRObject());
String cid2 = DecodeString((PdfString)ps.ReadPRObject());
int cid1c = (int)cid1[0];
int cid2c = (int)cid2[0];
PdfObject ob2 = ps.ReadPRObject();
if (ob2.IsString())
{
String uni = DecodeString((PdfString)ob2);
if (uni.Length == 1)
{
int unic = (int)uni[uni.Length - 1];
for (; cid1c <= cid2c; cid1c++, unic++)
{
int w = dw;
if (widths.ContainsKey(cid1c))
{
w = widths[cid1c];
}
metrics[unic] = new int[] { cid1c, w };
}
}
}
else
{
PdfArray a = (PdfArray)ob2;
for (int j = 0; j < a.Size; ++j, ++cid1c)
{
String uni = DecodeString(a.GetAsString(j));
if (uni.Length == 1)
{
int unic = (int)uni[uni.Length - 1];
int w = dw;
if (widths.ContainsKey(cid1c))
{
w = widths[cid1c];
}
metrics[unic] = new int[] { cid1c, w };
}
}
}
}
}
}
else
{
last = ob;
}
}
}
/**
* Processes PDF syntax
* @param contentBytes the bytes of a content stream
* @param resources the resources that come with the content stream
*/
public void ProcessContent(byte[] contentBytes, PdfDictionary resources){
this.resources.Push(resources);
PRTokeniser tokeniser = new PRTokeniser(contentBytes);
PdfContentParser ps = new PdfContentParser(tokeniser);
List<PdfObject> operands = new List<PdfObject>();
while (ps.Parse(operands).Count > 0){
PdfLiteral oper = (PdfLiteral)operands[operands.Count-1];
if ("BI".Equals(oper.ToString())){
// we don't call invokeOperator for embedded images - this is one area of the PDF spec that is particularly nasty and inconsistent
ImageRenderInfo renderInfo = ImageRenderInfo.CreatedForEmbeddedImage(Gs().ctm, InlineImageUtils.ParseInlineImage(ps));
renderListener.RenderImage(renderInfo);
} else {
InvokeOperator(oper, operands);
}
}
this.resources.Pop();
}
/**
* Processes PDF syntax.
* <b>Note:</b> If you re-use a given {@link PdfContentStreamProcessor}, you must call {@link PdfContentStreamProcessor#reset()}
* @param contentBytes the bytes of a content stream
* @param resources the resources that come with the content stream
*/
public void ProcessContent(byte[] contentBytes, PdfDictionary resources){
this.resources.Push(resources);
PRTokeniser tokeniser = new PRTokeniser(contentBytes);
PdfContentParser ps = new PdfContentParser(tokeniser);
List<iTextSharp.text.pdf.PdfObject> operands = new List<iTextSharp.text.pdf.PdfObject>();
while (ps.Parse(operands).Count > 0){
PdfLiteral oper = (PdfLiteral)operands[operands.Count-1];
// w.GetOperatorInfo(oper)
//w.wr.Print("operator info {0} type {1} string {2}", oper.GetType().ToString(), oper.Type, oper.ToString());
if ("BI".Equals(oper.ToString())){
// we don't call invokeOperator for embedded images - this is one area of the PDF spec that is particularly nasty and inconsistent
PdfDictionary colorSpaceDic = resources != null ? resources.GetAsDict(PdfName.COLORSPACE) : null;
// 'iTextSharp.text.pdf.parser.ImageRenderInfo.CreateForEmbeddedImage(iTextSharp.text.pdf.parser.Matrix, iTextSharp.text.pdf.parser.InlineImageInfo, iTextSharp.text.pdf.PdfDictionary)' is inaccessible due to its protection level
ImageRenderInfo renderInfo = ImageRenderInfo.CreateForEmbeddedImage(Gs().ctm, InlineImageUtils.ParseInlineImage(ps, colorSpaceDic), colorSpaceDic);
renderListener.RenderImage(renderInfo);
} else {
InvokeOperator(oper, operands);
}
}
this.resources.Pop();
}
private void FillMetrics(byte[] touni, IntHashtable widths, int dw) {
PdfContentParser ps = new PdfContentParser(new PRTokeniser(touni));
PdfObject ob = null;
PdfObject last = null;
bool notFound = true;
int nestLevel = 0;
while ((notFound || nestLevel > 0) && (ob = ps.ReadPRObject()) != null) {
if (ob.Type == PdfContentParser.COMMAND_TYPE) {
if (ob.ToString().Equals("begin")) {
notFound = false;
nestLevel++;
}
else if (ob.ToString().Equals("end")) {
nestLevel--;
}
else if (ob.ToString().Equals("beginbfchar")) {
int n = ((PdfNumber)last).IntValue;
for (int k = 0; k < n; ++k) {
String cid = DecodeString((PdfString)ps.ReadPRObject());
String uni = DecodeString((PdfString)ps.ReadPRObject());
if (uni.Length == 1) {
int cidc = (int)cid[0];
int unic = (int)uni[uni.Length - 1];
int w = dw;
if (widths.ContainsKey(cidc))
w = widths[cidc];
metrics[unic] = new int[]{cidc, w};
}
}
}
else if (ob.ToString().Equals("beginbfrange")) {
int n = ((PdfNumber)last).IntValue;
for (int k = 0; k < n; ++k) {
String cid1 = DecodeString((PdfString)ps.ReadPRObject());
String cid2 = DecodeString((PdfString)ps.ReadPRObject());
int cid1c = (int)cid1[0];
int cid2c = (int)cid2[0];
PdfObject ob2 = ps.ReadPRObject();
if (ob2.IsString()) {
String uni = DecodeString((PdfString)ob2);
if (uni.Length == 1) {
int unic = (int)uni[uni.Length - 1];
for (; cid1c <= cid2c; cid1c++, unic++) {
int w = dw;
if (widths.ContainsKey(cid1c))
w = widths[cid1c];
metrics[unic] = new int[]{cid1c, w};
}
}
}
else {
PdfArray a = (PdfArray)ob2;
for (int j = 0; j < a.Size; ++j, ++cid1c) {
String uni = DecodeString(a.GetAsString(j));
if (uni.Length == 1) {
int unic = (int)uni[uni.Length - 1];
int w = dw;
if (widths.ContainsKey(cid1c))
w = widths[cid1c];
metrics[unic] = new int[]{cid1c, w};
}
}
}
}
}
}
else
last = ob;
}
}
/**
* Parses an inline image from the provided content parser. The parser must be positioned immediately following the BI operator in the content stream.
* The parser will be left with current position immediately following the EI operator that terminates the inline image
* @param ps the content parser to use for reading the image.
* @return the parsed image
* @throws IOException if anything goes wring with the parsing
* @throws InlineImageParseException if parsing of the inline image failed due to issues specific to inline image processing
*/
public static InlineImageInfo ParseInlineImage(PdfContentParser ps, PdfDictionary colorSpaceDic)
{
PdfDictionary inlineImageDictionary = ParseInlineImageDictionary(ps);
byte[] samples = ParseInlineImageSamples(inlineImageDictionary, colorSpaceDic, ps);
return new InlineImageInfo(samples, inlineImageDictionary);
}
private void FillMetrics(byte[] touni, IntHashtable widths, int dw)
{
PdfContentParser ps = new PdfContentParser(new PRTokeniser(new RandomAccessFileOrArray(new RandomAccessSourceFactory().CreateSource(touni))));
PdfObject ob = null;
bool notFound = true;
int nestLevel = 0;
int maxExc = 50;
while ((notFound || nestLevel > 0))
{
try {
ob = ps.ReadPRObject();
}
catch {
if (--maxExc < 0)
{
break;
}
continue;
}
if (ob == null)
{
break;
}
if (ob.Type == PdfContentParser.COMMAND_TYPE)
{
if (ob.ToString().Equals("begin"))
{
notFound = false;
nestLevel++;
}
else if (ob.ToString().Equals("end"))
{
nestLevel--;
}
else if (ob.ToString().Equals("beginbfchar"))
{
while (true)
{
PdfObject nx = ps.ReadPRObject();
if (nx.ToString().Equals("endbfchar"))
{
break;
}
String cid = DecodeString((PdfString)nx);
String uni = DecodeString((PdfString)ps.ReadPRObject());
if (uni.Length == 1)
{
int cidc = (int)cid[0];
int unic = (int)uni[uni.Length - 1];
int w = dw;
if (widths.ContainsKey(cidc))
{
w = widths[cidc];
}
metrics[unic] = new int[] { cidc, w };
}
}
}
else if (ob.ToString().Equals("beginbfrange"))
{
while (true)
{
PdfObject nx = ps.ReadPRObject();
if (nx.ToString().Equals("endbfrange"))
{
break;
}
String cid1 = DecodeString((PdfString)nx);
String cid2 = DecodeString((PdfString)ps.ReadPRObject());
int cid1c = (int)cid1[0];
int cid2c = (int)cid2[0];
PdfObject ob2 = ps.ReadPRObject();
if (ob2.IsString())
{
String uni = DecodeString((PdfString)ob2);
if (uni.Length == 1)
{
int unic = (int)uni[uni.Length - 1];
for (; cid1c <= cid2c; cid1c++, unic++)
{
int w = dw;
if (widths.ContainsKey(cid1c))
{
w = widths[cid1c];
}
metrics[unic] = new int[] { cid1c, w };
}
}
}
else
{
PdfArray a = (PdfArray)ob2;
for (int j = 0; j < a.Size; ++j, ++cid1c)
{
String uni = DecodeString(a.GetAsString(j));
if (uni.Length == 1)
{
int unic = (int)uni[uni.Length - 1];
int w = dw;
if (widths.ContainsKey(cid1c))
{
w = widths[cid1c];
}
metrics[unic] = new int[] { cid1c, w };
}
}
}
}
}
}
}
}
private void fillMetrics(byte[] touni, IntHashtable widths, int dw)
{
PdfContentParser ps = new PdfContentParser(new PrTokeniser(touni));
PdfObject ob = null;
PdfObject last = null;
while ((ob = ps.ReadPrObject()) != null)
{
if (ob.Type == PdfContentParser.COMMAND_TYPE)
{
if (ob.ToString().Equals("beginbfchar"))
{
int n = ((PdfNumber)last).IntValue;
for (int k = 0; k < n; ++k)
{
string cid = decodeString((PdfString)ps.ReadPrObject());
string uni = decodeString((PdfString)ps.ReadPrObject());
if (uni.Length == 1)
{
int cidc = cid[0];
int unic = uni[uni.Length - 1];
int w = dw;
if (widths.ContainsKey(cidc))
{
w = widths[cidc];
}
_metrics[unic] = new[] { cidc, w };
}
}
}
else if (ob.ToString().Equals("beginbfrange"))
{
int n = ((PdfNumber)last).IntValue;
for (int k = 0; k < n; ++k)
{
string cid1 = decodeString((PdfString)ps.ReadPrObject());
string cid2 = decodeString((PdfString)ps.ReadPrObject());
int cid1C = cid1[0];
int cid2C = cid2[0];
PdfObject ob2 = ps.ReadPrObject();
if (ob2.IsString())
{
string uni = decodeString((PdfString)ob2);
if (uni.Length == 1)
{
int unic = uni[uni.Length - 1];
for (; cid1C <= cid2C; cid1C++, unic++)
{
int w = dw;
if (widths.ContainsKey(cid1C))
{
w = widths[cid1C];
}
_metrics[unic] = new[] { cid1C, w };
}
}
}
else
{
PdfArray a = (PdfArray)ob2;
for (int j = 0; j < a.Size; ++j, ++cid1C)
{
string uni = decodeString(a.GetAsString(j));
if (uni.Length == 1)
{
int unic = uni[uni.Length - 1];
int w = dw;
if (widths.ContainsKey(cid1C))
{
w = widths[cid1C];
}
_metrics[unic] = new[] { cid1C, w };
}
}
}
}
}
}
else
{
last = ob;
}
}
}
