public void UpdateObject(IPdfObject obj, string trailerName = null)
{
if (!gUpdatePdf)
{
throw new PBException("error object update is not activate \"{0}\"", gw.File);
}
if (!gXref.ContainsKey(obj.id))
{
throw new PBException("error update object {0}, object dont exist", obj.id);
}
gw.Seek(gUpdatePosition);
gXref[obj.id] = new PdfXref {
objectId = obj.id, generationNumber = obj.generationNumber, filePosition = gUpdatePosition
};
if (trailerName != null)
{
gTrailer[trailerName] = new PdfNValue {
name = trailerName, value = new PdfValueObjectRef {
valueObjectId = obj.id, valueObjectGenerationNumber = obj.generationNumber
}
}
}
;
_WriteObject(obj);
gUpdatePosition = (int)gw.Position;
}
public void WriteObject(IPdfObject obj, string trailerName = null)
{
if (gXref.ContainsKey(obj.id))
{
throw new PBException("error object already in file id {0}", obj.id);
}
gXref.Add(obj.id, new PdfXref {
objectId = obj.id, generationNumber = obj.generationNumber, filePosition = gw.Position
});
if (trailerName != null)
{
gTrailer[trailerName] = new PdfNValue {
name = trailerName, value = new PdfValueObjectRef {
valueObjectId = obj.id, valueObjectGenerationNumber = obj.generationNumber
}
}
}
;
_WriteObject(obj);
//gw.Write("{0} {1} obj\n", obj.id, obj.generationNumber);
//WriteValue(obj.value);
//gw.Write("\n");
//if (obj.stream != null)
//{
// gw.Write("stream\n");
// gw.Write(obj.stream);
// gw.Write("\n");
// gw.Write("endstream\n");
//}
//gw.Write("endobj\n");
}
public IPdfValue ReadPdfValue(ref string s)
{
// 1 0 R
// /OneColumn
// /Producer (FPDF 1.6)
// /CreationDate (D:20121205105056)
// [3 0 R /FitH null]
// [0 0 907.09 1292.59]
while (s.Length == 0)
{
s = gpsr.ReadLine();
}
Regex rg_value_name = new Regex(@"^/([a-zA-Z0-9_\-\+]+) *", RegexOptions.Compiled);
Regex rg_value_string = new Regex(@"^\((?:(D):([0-9]{4})([0-9]{2})([0-9]{2})([0-9]{2})([0-9]{2})([0-9]{2}))?([^)]*)\)", RegexOptions.Compiled);
Regex rg_end_array = new Regex(@"^ *\] *", RegexOptions.Compiled);
Regex rg_value_bool = new Regex(@"^ *(true|false) *", RegexOptions.Compiled | RegexOptions.IgnoreCase);
Regex rg_value_object_ref = new Regex("^ *([0-9]+) +([0-9]+) +R *", RegexOptions.Compiled);
Regex rg_value_double = new Regex(@"^ *(-?[0-9]+\.[0-9]+) *", RegexOptions.Compiled);
Regex rg_value_int = new Regex(@"^ *(-?[0-9]+) *", RegexOptions.Compiled);
Regex rg_value_null = new Regex(@"^ *null *", RegexOptions.Compiled);
Match match;
if (s[0] == '/')
{
match = rg_value_name.Match(s);
if (!match.Success)
{
throw new PBException("error reading value {0} line {1} \"{2}\"", gpsr.ObjectName, gpsr.LineNumber, s);
}
s = s.Substring(match.Length);
return(new PdfValueName {
valueName = match.Groups[1].Value
});
}
// /Producer (FPDF 1.6)
if (s[0] == '(')
{
match = rg_value_string.Match(s);
if (!match.Success)
{
throw new PBException("error reading value {0} line {1} \"{2}\"", gpsr.ObjectName, gpsr.LineNumber, s);
}
s = s.Substring(match.Length);
switch (match.Groups[1].Value)
{
case "D":
return(new PdfValueDateTime {
valueDateTime = new DateTime(int.Parse(match.Groups[2].Value), int.Parse(match.Groups[3].Value), int.Parse(match.Groups[4].Value),
int.Parse(match.Groups[5].Value), int.Parse(match.Groups[6].Value), int.Parse(match.Groups[7].Value))
});
case "":
return(new PdfValueString {
valueString = match.Groups[8].Value
});
}
}
if (s[0] == '[')
{
s = s.Substring(1);
List <IPdfValue> values = new List <IPdfValue>();
while (true)
{
match = rg_end_array.Match(s);
if (match.Success)
{
s = s.Substring(match.Length);
break;
}
values.Add(ReadPdfValue(ref s));
}
return(new PdfValueArray {
arrayValues = values.ToArray()
});
}
if (s.StartsWith("<<"))
{
PdfValueObject obj = new PdfValueObject();
if (s.Length > 2)
{
s = s.Substring(2);
}
else
{
s = gpsr.ReadLine();
}
while (true)
{
if (s.StartsWith(">>"))
{
s = s.Substring(2);
break;
}
PdfNValue value = ReadPdfNValue(ref s);
obj[value.name] = value;
if (s == "")
{
s = gpsr.ReadLine();
}
}
return(obj);
}
match = rg_value_bool.Match(s);
if (match.Success)
{
s = s.Substring(match.Length);
return(new PdfValueBool {
valueBool = match.Groups[1].Value.ToLower() == "true" ? true : false
});
}
match = rg_value_object_ref.Match(s);
if (match.Success)
{
s = s.Substring(match.Length);
return(new PdfValueObjectRef {
valueObjectId = int.Parse(match.Groups[1].Value), valueObjectGenerationNumber = int.Parse(match.Groups[2].Value)
});
}
match = rg_value_double.Match(s);
if (match.Success)
{
s = s.Substring(match.Length);
return(new PdfValueDouble {
valueDouble = double.Parse(match.Groups[1].Value)
});
}
match = rg_value_int.Match(s);
if (match.Success)
{
s = s.Substring(match.Length);
return(new PdfValueInt {
valueInt = int.Parse(match.Groups[1].Value)
});
}
match = rg_value_null.Match(s);
if (match.Success)
{
s = s.Substring(match.Length);
return(new PdfValueNull());
}
throw new PBException("error reading value {0} line {1} \"{2}\"", gpsr.ObjectName, gpsr.LineNumber, s);
}
public IPdfObject ReadObject(int id)
{
// trailer
// <<
// /Size 5274
// /Root 5273 0 R
// /Info 5272 0 R
// >>
// 5273 0 obj
// <<
// /Type /Catalog
// /Pages 1 0 R
// /OpenAction [3 0 R /FitH null]
// /PageLayout /OneColumn
// >>
// endobj
// 3 0 obj
// <</Type /Page
// /Parent 1 0 R
// /MediaBox [0 0 907.09 1292.59]
// /Resources 2 0 R
// /Contents 4 0 R>>
// endobj
if (!gXref.ContainsKey(id))
{
throw new PBException("error unknow object {0}", id);
}
PdfXref xref = gXref[id];
gpsr.StartReadObject(string.Format("object {0}", id));
gpsr.Seek(xref.filePosition);
// 5273 0 obj
Regex rg_object_begin = new Regex("^([0-9]+) ([0-9]+) obj$", RegexOptions.Compiled);
PdfObjectDictionary o = new PdfObjectDictionary(id, xref.generationNumber);
string s = gpsr.ReadLine();
Match match = rg_object_begin.Match(s);
if (!match.Success || int.Parse(match.Groups[1].Value) != id || int.Parse(match.Groups[2].Value) != xref.generationNumber)
{
throw new PBException("error reading {0} line {1} \"{2}\"", gpsr.ObjectName, gpsr.LineNumber, s);
}
s = gpsr.ReadLine();
o.value = ReadPdfValue(ref s);
if (s == "")
{
s = gpsr.ReadLine();
}
if (s == "stream")
{
int length = 0;
PdfNValue lengthValue = null;
if (o.value.isObject())
{
lengthValue = o.value["Length"];
}
if (lengthValue == null)
{
throw new PBException("error stream without /Length reading {0} line {1} \"{2}\"", gpsr.ObjectName, gpsr.LineNumber, s);
}
if (lengthValue.value.isInt())
{
length = lengthValue.value.valueInt;
}
else if (lengthValue.value.isObjectRef())
{
long position = gpsr.Position;
PdfObjectReader or = new PdfObjectReader(this);
IPdfObject lengthObject = or.ReadObject(lengthValue.value.valueObjectId);
gpsr.Seek(position);
if (lengthObject.value.isInt())
{
length = lengthObject.value.valueInt;
}
}
if (length != 0)
{
o.stream = gpsr.ReadStream(length);
}
else
{
o.stream = gpsr.ReadStream();
}
s = gpsr.ReadLine();
}
if (s != "endobj")
{
throw new PBException("error endobj not found reading {0} line {1} \"{2}\"", gpsr.ObjectName, gpsr.LineNumber, s);
}
o.source = gpsr.GetObjectSource();
return(o);
}
public void UpdateObject(IPdfObject obj, string trailerName = null)
{
if (!gUpdatePdf) throw new PBException("error object update is not activate \"{0}\"", gw.File);
if (!gXref.ContainsKey(obj.id)) throw new PBException("error update object {0}, object dont exist", obj.id);
gw.Seek(gUpdatePosition);
gXref[obj.id] = new PdfXref { objectId = obj.id, generationNumber = obj.generationNumber, filePosition = gUpdatePosition };
if (trailerName != null)
gTrailer[trailerName] = new PdfNValue { name = trailerName, value = new PdfValueObjectRef { valueObjectId = obj.id, valueObjectGenerationNumber = obj.generationNumber } };
_WriteObject(obj);
gUpdatePosition = (int)gw.Position;
}
public void WriteObject(IPdfObject obj, string trailerName = null)
{
if (gXref.ContainsKey(obj.id)) throw new PBException("error object already in file id {0}", obj.id);
gXref.Add(obj.id, new PdfXref { objectId = obj.id, generationNumber = obj.generationNumber, filePosition = gw.Position });
if (trailerName != null)
gTrailer[trailerName] = new PdfNValue { name = trailerName, value = new PdfValueObjectRef { valueObjectId = obj.id, valueObjectGenerationNumber = obj.generationNumber } };
_WriteObject(obj);
//gw.Write("{0} {1} obj\n", obj.id, obj.generationNumber);
//WriteValue(obj.value);
//gw.Write("\n");
//if (obj.stream != null)
//{
// gw.Write("stream\n");
// gw.Write(obj.stream);
// gw.Write("\n");
// gw.Write("endstream\n");
//}
//gw.Write("endobj\n");
}
