//--------------------------------------------------------------------//
// M e t h o d //
// p r o c e s s F o n t H e a d e r //
//--------------------------------------------------------------------//
// //
// Provide an interpretation of the contents of the initial part of //
// the font header. //
// //
//--------------------------------------------------------------------//
private void processFontHeader(ref Int32 bufLen,
ref Int32 bufOffset)
{
Char c;
Int32 ix1,
ix2,
ix3;
Int32 indxSymSet;
String itemDesc;
//----------------------------------------------------------------//
// //
// Show size and (optionally) data. //
// //
//----------------------------------------------------------------//
PrnParseCommon.addDataRow(
PrnParseRowTypes.eType.DataBinary,
_table,
PrnParseConstants.eOvlShow.None,
_indxOffsetFormat,
_fileOffset + bufOffset,
_analysisLevel,
"PCLXL Binary",
"[ " + _cHddrDescLen.ToString() + " bytes ]",
"Font header");
if (_showBinData)
{
PrnParseData.processBinary(
_table,
PrnParseConstants.eOvlShow.None,
_buf,
_fileOffset,
bufOffset,
_cHddrDescLen,
"",
_showBinData,
false,
true,
_indxOffsetFormat,
_analysisLevel);
}
//----------------------------------------------------------------//
// //
// Determine the Header Format, and from this determine the //
// position and size of parts of the header following the //
// Descriptor. //
// //
//----------------------------------------------------------------//
_hddrFormat = (ePCLXLFontFormat)_buf[bufOffset];
if (_hddrFormat == ePCLXLFontFormat.Download)
{
//------------------------------------------------------------//
// //
// Format 0 - Only format supported (as at v3.0). //
// //
//------------------------------------------------------------//
_hddrDataLen = _hddrLen - _cHddrDescLen;
_hddrDataRem = _hddrDataLen;
}
else
{
//------------------------------------------------------------//
// //
// Unknown format. //
// //
//------------------------------------------------------------//
_validHddr = false;
PrnParseCommon.addTextRow(
PrnParseRowTypes.eType.MsgWarning,
_table,
PrnParseConstants.eOvlShow.None,
"",
"*** Warning ***",
"",
"Header format (" + _hddrFormat + ") is not recognised");
}
if (!_validHddr)
{
PrnParseCommon.addTextRow(
PrnParseRowTypes.eType.MsgWarning,
_table,
PrnParseConstants.eOvlShow.None,
"",
"*** Warning ***",
"",
"Processing of Font Header abandoned");
}
else
{
//------------------------------------------------------------//
// //
// Header format (byte 0). //
// //
//------------------------------------------------------------//
switch (_hddrFormat)
{
case ePCLXLFontFormat.Download:
itemDesc = "0: PCLXL Download";
break;
default:
itemDesc = _hddrFormat + ": Unknown";
break;
}
PrnParseCommon.addTextRow(
PrnParseRowTypes.eType.PCLXLFontHddr,
_table,
PrnParseConstants.eOvlShow.None,
"",
"Header Format:",
"",
itemDesc);
//------------------------------------------------------------//
// //
// Orientation (byte 1). //
// //
// 0 = Portrait //
// 1 = Landscape //
// 2 = Reverse Portrait //
// 3 = Reverse Landscape //
// //
//------------------------------------------------------------//
ix1 = _buf[bufOffset + 1];
switch (ix1)
{
case 0:
itemDesc = "0: Portrait";
break;
case 1:
itemDesc = "1: Landscape";
break;
case 2:
itemDesc = "2: Reverse Portrait";
break;
case 3:
itemDesc = "3: Reverse Landscape";
break;
default:
itemDesc = ix1 + ": Unknown";
break;
}
PrnParseCommon.addTextRow(
PrnParseRowTypes.eType.PCLXLFontHddr,
_table,
PrnParseConstants.eOvlShow.None,
"",
"Orientation:",
"",
itemDesc);
//------------------------------------------------------------//
// //
// Mapping (bytes 2-3). //
// //
// Two part: 11-bit number (binary). //
// 5-bit letter-code: add 64 to this to obtain the //
// (ASCII) character-code of the letter. //
// //
// e.g. value of 0x000E --> 0N //
// 0x0115 --> 8U //
// 0x0155 --> 10U //
// 0x01F1 --> 15Q //
// //
// Symbol sets where the letter part equates to 'Q' are //
// reserved for 'Specials'. //
// //
//------------------------------------------------------------//
ix1 = (_buf[bufOffset + 2] * 256) + _buf[bufOffset + 3];
ix2 = ix1 >> 5;
ix3 = (ix1 & 0x1f) + 64;
c = (Char)ix3;
indxSymSet =
PCLSymbolSets.getIndexForId((UInt16)ix1);
PrnParseCommon.addTextRow(
PrnParseRowTypes.eType.PCLXLFontHddr,
_table,
PrnParseConstants.eOvlShow.None,
"",
"Mapping:",
"Kind1 value:",
ix1.ToString() + " (0x" + ix1.ToString("x2") + ")");
if ((indxSymSet) == -1)
{
PrnParseCommon.addTextRow(
PrnParseRowTypes.eType.PCLXLFontHddr,
_table,
PrnParseConstants.eOvlShow.None,
"",
" ---->",
"Identifier:",
ix2.ToString() + c);
}
else
{
PrnParseCommon.addTextRow(
PrnParseRowTypes.eType.PCLXLFontHddr,
_table,
PrnParseConstants.eOvlShow.None,
"",
" ---->",
"Identifier:",
ix2.ToString() + c +
" (" + PCLSymbolSets.getName(indxSymSet) + ")");
}
//------------------------------------------------------------//
// //
// Scaling Technology (byte 4). //
// Variety (byte 5). Expected to be zero. //
// //
//------------------------------------------------------------//
ePCLXLFontTechnology scaling =
(ePCLXLFontTechnology)_buf[bufOffset + 4];
ix2 = _buf[bufOffset + 5];
switch (scaling)
{
case ePCLXLFontTechnology.TrueType:
itemDesc = "1: TrueType";
break;
case ePCLXLFontTechnology.Bitmap:
itemDesc = "254: Bitmap";
break;
default:
itemDesc = scaling.ToString() + ": Unknown";
break;
}
PrnParseCommon.addTextRow(
PrnParseRowTypes.eType.PCLXLFontHddr,
_table,
PrnParseConstants.eOvlShow.None,
"",
"Scaling:",
"Technology:",
itemDesc);
PrnParseCommon.addTextRow(
PrnParseRowTypes.eType.PCLXLFontHddr,
_table,
PrnParseConstants.eOvlShow.None,
"",
"",
"Variety:",
ix2.ToString());
//----------------------------------------------------------------------//
// //
// Number of Characters (bytes 6-7). //
// //
//----------------------------------------------------------------------//
ix1 = (_buf[bufOffset + 6] * 256) + _buf[bufOffset + 7];
PrnParseCommon.addTextRow(
PrnParseRowTypes.eType.PCLXLFontHddr,
_table,
PrnParseConstants.eOvlShow.None,
"",
"Character Count:",
"",
ix1.ToString());
}
}
//--------------------------------------------------------------------//
// M e t h o d //
// p r o c e s s P J L C o m m a n d //
//--------------------------------------------------------------------//
// //
// Process current PJL command in buffer. //
// Command format is one of: //
// //
// @PJL [<CR>]<LF> //
// //
// Can be used to separate real commands, and add clarity to long //
// sets of commands. //
// //
// @PJL command [<words>] [<CR>}<LF> //
// //
// For the COMMENT and ECHO commands only. //
// <words> Any string of printable characters //
// (range 0x21-0xff) or whitespace //
// (space (0x20) or horizontal tab (0x09)), //
// starting with a printable character. //
// The string may be enclosed in quote //
// characters (0x22), in which case it //
// cannot include a quote character. //
// //
// @PJL command [modifier : value] [option [= value]] [<CR>}<LF> //
// //
// command One of the defined set of command names. //
// modifier:value is present for some commands to indicate //
// particular personality, or port, etc. //
// option Present for most commands. //
// value Associated with 'option' name or (if //
// that is not present, the command). //
// There may be more than one option=value //
// pair. //
// //
// Whitespace (space or horizontal tab) characters MUST be present //
// between the @PJL introducer and the 'command', and between the //
// command and modifier names, and between the modifier value and the //
// option name. //
// //
// Interrupt process if an <Esc> character is encountered. //
// Long lines are split into shorter slices. //
// //
//--------------------------------------------------------------------//
private Boolean processPJLCommand(
ref Int32 bufRem,
ref Int32 bufOffset,
ref Boolean continuation,
ref Boolean langSwitch,
ref ToolCommonData.ePrintLang crntPDL)
{
PrnParseConstants.eContType contType =
PrnParseConstants.eContType.None;
Byte crntByte;
Char crntChar,
normChar;
Int32 len,
cmdLen,
cmdRem,
langLen,
offset,
lineStart,
seqLen = 0;
Int32 quoteStart = 0,
quoteEnd = 0;
Boolean invalidSeqFound,
endLoop,
foundTerm,
firstLine;
Boolean foundStartQuote;
Boolean seqKnown = false;
Boolean noWhitespace = false;
String lang,
commandName,
commandParams,
line,
showChar,
desc = "";
StringBuilder seq = new StringBuilder();
StringBuilder cmd = new StringBuilder();
StringBuilder cmdPart1 = new StringBuilder();
StringBuilder cmdPart2 = new StringBuilder();
cmdPart1.Append("@PJL");
invalidSeqFound = false;
foundStartQuote = false;
foundTerm = false;
firstLine = true;
langSwitch = false;
lineStart = bufOffset;
foundTerm = false;
len = bufRem;
offset = bufOffset;
continuation = false;
foundTerm = false;
cmdRem = bufRem - _lenPJLIntro;
offset = bufOffset + _lenPJLIntro;
cmdLen = _lenPJLIntro;
//----------------------------------------------------------------//
// //
// Search for termination character. //
// This should be a LineFeed (<LF>, 0x0a) character, but may be //
// an Escape character (<Esc>, 0x1b) signalling return to PCL. //
// //
// This is to make sure that the termination character is in the //
// buffer before processing the command, so that we don't have to //
// cater for doing a 'continuation' read part way through //
// processing the command. //
// //
// Initiate continuation action if terminator is not found in //
// buffer, subject to a maximum command length (to prevent //
// recursive continuation actions). //
// //
//----------------------------------------------------------------//
while ((!foundTerm) && (cmdRem > 0) && (cmdLen < _maxPJLCmdLen))
{
crntByte = _buf[offset];
if (crntByte == PrnParseConstants.asciiLF)
{
foundTerm = true;
offset++;
cmdLen++;
cmdRem--;
}
else if (crntByte == PrnParseConstants.asciiEsc)
{
foundTerm = true;
}
else
{
offset++;
cmdLen++;
cmdRem--;
}
}
if ((!foundTerm) && (cmdLen != _maxPJLCmdLen)) // ***** Should this be < rather than != ? ***** //
{
//------------------------------------------------------------//
// //
// Termination character not found before buffer exhausted, //
// or maximum command length exceeded. //
// Initiate (backtracking) continuation action. //
// //
//------------------------------------------------------------//
continuation = true;
contType = PrnParseConstants.eContType.PJL;
_linkData.setBacktrack(contType, -bufRem);
}
else
{
//------------------------------------------------------------//
// //
// Process command. //
// At this point, we have in the buffer one of: //
// - characters terminated by <LF> (counted in length). //
// - characters terminated by <Esc> (not counted in length). //
// - characters not terminated, but maxmimum length. //
// //
//------------------------------------------------------------//
cmdRem = cmdLen - _lenPJLIntro;
offset = bufOffset + _lenPJLIntro;
//------------------------------------------------------------//
// //
// Stage 1: look for & skip past whitespace. //
// //
//------------------------------------------------------------//
endLoop = false;
while ((!endLoop) && (cmdRem > 0))
{
crntByte = _buf[offset];
if ((crntByte == PrnParseConstants.asciiSpace)
||
(crntByte == PrnParseConstants.asciiHT))
{
showChar = PrnParseData.processByte(
crntByte,
_indxCharSetSubAct,
(Byte)_valCharSetSubCode,
_indxCharSetName);
cmdPart1.Append(showChar);
offset++;
cmdRem--;
}
else
{
endLoop = true;
}
}
//------------------------------------------------------------//
// //
// Stage 2: look for command name. //
// //
//------------------------------------------------------------//
endLoop = false;
while ((!endLoop) && (cmdRem > 0))
{
crntByte = _buf[offset];
//--------------------------------------------------------//
// //
// Check for special characters first. //
// //
//--------------------------------------------------------//
if ((crntByte == PrnParseConstants.asciiSpace)
||
(crntByte == PrnParseConstants.asciiHT))
{
// nextstage = Whitespace;
endLoop = true;
}
else if ((cmdRem == 2) &&
(crntByte == PrnParseConstants.asciiCR))
{
// nextstage = Terminator;
endLoop = true;
}
else if ((cmdRem == 1) &&
(crntByte == PrnParseConstants.asciiLF))
{
// nextstage = Terminator;
endLoop = true;
}
else if (crntByte == PrnParseConstants.asciiEquals)
{
// nextstage = Part2;
endLoop = true;
noWhitespace = true;
}
else
{
crntChar = (Char)crntByte;
normChar = Char.ToUpper(crntChar);
cmd.Append(normChar);
showChar = PrnParseData.processByte(
crntByte,
_indxCharSetSubAct,
(Byte)_valCharSetSubCode,
_indxCharSetName);
cmdPart1.Append(showChar);
offset++;
cmdRem--;
}
}
//------------------------------------------------------------//
// //
// Check whether command name known. //
// //
//------------------------------------------------------------//
commandName = cmd.ToString();
if (commandName == "")
{
seqKnown = PJLCommands.checkCmd(PJLCommands.nullCmdKey,
ref desc,
_analysisLevel);
}
else
{
seqKnown = PJLCommands.checkCmd(cmd.ToString(),
ref desc,
_analysisLevel);
}
//------------------------------------------------------------//
// //
// Stage 3: look for command remainder. //
// TODO : split this up into component parts? //
// //
//------------------------------------------------------------//
endLoop = false;
while ((!endLoop) && (cmdRem > 0))
{
crntByte = _buf[offset];
if (crntByte == PrnParseConstants.asciiQuote)
{
if (!foundStartQuote)
{
foundStartQuote = true;
quoteStart = offset;
}
else
{
quoteEnd = offset;
}
}
crntChar = (Char)crntByte;
normChar = Char.ToUpper(crntChar);
showChar = PrnParseData.processByte(
crntByte,
_indxCharSetSubAct,
(Byte)_valCharSetSubCode,
_indxCharSetName);
cmdPart2.Append(showChar);
if ((crntByte == PrnParseConstants.asciiSpace)
||
(crntByte == PrnParseConstants.asciiHT))
{
}
else if ((crntByte == PrnParseConstants.asciiDEL)
||
(crntByte < PrnParseConstants.asciiSpace))
{
seq.Append((Char)PrnParseConstants.asciiPeriod);
}
else
{
seq.Append(normChar);
}
offset++;
cmdRem--;
}
//--------------------------------------------------------//
// //
// Stage 4: Output details of sequence. //
// //
//--------------------------------------------------------//
commandParams = cmdPart2.ToString();
len = commandParams.Length;
lineStart = 0;
while ((firstLine) || (len > 0))
{
if (len > _maxPJLLineLen)
{
line = commandParams.Substring(lineStart,
_maxPJLLineLen);
len -= _maxPJLLineLen;
lineStart += _maxPJLLineLen;
}
else
{
line = commandParams.Substring(lineStart,
len);
len = 0;
}
if (firstLine)
{
firstLine = false;
if (!seqKnown)
{
PrnParseCommon.addTextRow(
PrnParseRowTypes.eType.MsgWarning,
_table,
PrnParseConstants.eOvlShow.None,
"",
"*** Warning ***",
"",
"Following PJL commmand name not recognised:");
}
if (noWhitespace)
{
PrnParseCommon.addTextRow(
PrnParseRowTypes.eType.MsgWarning,
_table,
PrnParseConstants.eOvlShow.None,
"",
"*** Warning ***",
"",
"Following PJL command name not terminated" +
" by space or tab character:");
}
PrnParseCommon.addDataRow(
PrnParseRowTypes.eType.PJLCommand,
_table,
PrnParseConstants.eOvlShow.Remove,
_indxOffsetFormat,
_fileOffset + bufOffset,
_analysisLevel,
"PJL Command",
cmdPart1.ToString(),
line);
}
else
{
PrnParseCommon.addTextRow(
PrnParseRowTypes.eType.PJLCommand,
_table,
PrnParseConstants.eOvlShow.Remove,
"",
"",
"",
line);
}
}
//--------------------------------------------------------//
// //
// Stage 5: Do any special processing. //
// //
//--------------------------------------------------------//
commandParams = seq.ToString();
if ((commandName.Length == 5)
&&
(commandName.Substring(0, 5) == "ENTER")
&&
(commandParams.Length > 9)
&&
(commandParams.Substring(0, 9) == "LANGUAGE="))
{
//--------------------------------------------------------//
// //
// Enter Language command encountered. //
// //
//--------------------------------------------------------//
langSwitch = true;
seqLen = seq.Length;
lang = commandParams.Substring(9, seqLen - 9);
langLen = lang.Length;
if ((langLen >= 5) &&
(lang.Substring(0, 5) == "PCLXL"))
{
crntPDL = ToolCommonData.ePrintLang.PCLXL;
}
else if ((langLen >= 7) &&
(lang.Substring(0, 7) == "PCL3GUI"))
{
crntPDL = ToolCommonData.ePrintLang.PCL3GUI;
}
else if ((langLen >= 3) &&
(lang.Substring(0, 3) == "PCL"))
{
crntPDL = ToolCommonData.ePrintLang.PCL;
}
else if ((langLen >= 10) &&
(lang.Substring(0, 10) == "POSTSCRIPT"))
{
crntPDL = ToolCommonData.ePrintLang.PostScript;
}
else if ((langLen >= 4) &&
(lang.Substring(0, 4) == "HPGL"))
{
crntPDL = ToolCommonData.ePrintLang.HPGL2;
}
else if ((langLen >= 5) &&
(lang.Substring(0, 5) == "XL2HB"))
{
crntPDL = ToolCommonData.ePrintLang.XL2HB;
}
else
{
crntPDL = ToolCommonData.ePrintLang.Unknown;
}
}
else if ((_showPML) &&
(((commandName.Length == 5)
&&
(commandName.Substring(0, 5) == "DMCMD"))
||
((commandName.Length == 6)
&&
(commandName.Substring(0, 6) == "DMINFO"))))
{
//--------------------------------------------------------//
// //
// PML Device Management //
// //
//--------------------------------------------------------//
if ((commandParams.Length > 9)
&&
(commandParams.Substring(0, 9) == "ASCIIHEX="))
{
//----------------------------------------------------//
// //
// PML sequence; encoded as ASCII HEX. //
// Expected to be enclosed in " quotes and followed //
// by <CR><LF> or <LF> PJL terminator characters. //
// Note that the normalised sequence will have "." //
// characters in place of the <CR> and <LF> control //
// codes. //
// //
//----------------------------------------------------//
PrnParsePML parsePML = new PrnParsePML();
seqLen = quoteEnd - quoteStart - 1;
if (seqLen > 0)
{
invalidSeqFound =
parsePML.processPMLASCIIHex(_buf,
_fileOffset,
seqLen,
quoteStart + 1,
_linkData,
_options,
_table);
}
}
}
bufOffset = offset;
bufRem -= cmdLen;
}
return(invalidSeqFound);
}
//--------------------------------------------------------------------//
// M e t h o d //
// a n a l y s e F o n t H d d r //
//--------------------------------------------------------------------//
// //
// Provide an interpretation of the contents of a PCL XL soft font //
// header. //
// //
//--------------------------------------------------------------------//
public Boolean analyseFontHddr(Int32 hddrLen,
Byte [] buf,
Int32 fileOffset,
ref Int32 bufRem,
ref Int32 bufOffset,
PrnParseLinkData linkData,
PrnParseOptions options,
DataTable table)
{
Int32 binDataLen;
Boolean validSegs = false;
PrnParseConstants.eContType contType;
Boolean continuation = false;
//----------------------------------------------------------------//
// //
// Initialise. //
// //
//----------------------------------------------------------------//
_table = table;
_buf = buf;
_fileOffset = fileOffset;
_analysisLevel = linkData.AnalysisLevel;
_options = options;
contType = linkData.getContType();
_indxOffsetFormat = _options.IndxGenOffsetFormat;
_showBinData = _options.FlagPCLXLMiscBinData;
//----------------------------------------------------------------//
if (contType == PrnParseConstants.eContType.None)
{
_nextStage = eStage.Start;
_validHddr = true;
_firstSeg = true;
_hddrLen = hddrLen;
_hddrRem = hddrLen;
_hddrPos = fileOffset + bufOffset;
}
else
{
contType = PrnParseConstants.eContType.None;
linkData.resetContData();
}
//----------------------------------------------------------------//
if (_nextStage == eStage.Start)
{
if (bufRem < _cHddrDescLen)
{
//--------------------------------------------------------//
// //
// Font header descriptor is not all in buffer. //
// Initiate continuation. //
// //
//--------------------------------------------------------//
contType = PrnParseConstants.eContType.PCLXLFontHddr;
linkData.setBacktrack(contType, -bufRem);
}
else
{
_nextStage = eStage.ShowHddr;
}
}
if (_nextStage == eStage.ShowHddr)
{
//------------------------------------------------------------//
// //
// Process font header. //
// //
//------------------------------------------------------------//
processFontHeader(ref bufRem,
ref bufOffset);
bufRem = bufRem - _cHddrDescLen;
_hddrRem = _hddrRem - _cHddrDescLen;
bufOffset = bufOffset + _cHddrDescLen;
if (_validHddr)
{
_nextStage = eStage.ShowData;
}
else
{
_nextStage = eStage.BadSeqA;
}
}
if (_nextStage == eStage.ShowData)
{
//------------------------------------------------------------//
// //
// Output details of segmented data: //
// //
//------------------------------------------------------------//
Int32 dummy = 0;
continuation = _parseSegs.processSegData(_buf,
_fileOffset,
false,
_firstSeg,
true,
ref bufRem,
ref bufOffset,
ref _hddrDataRem,
ref _hddrRem,
ref dummy,
ref validSegs,
linkData,
_options,
_table);
_firstSeg = false;
}
if (_nextStage == eStage.EndOK)
{
//------------------------------------------------------------//
// //
// End of processing of valid header. //
// //
//------------------------------------------------------------//
return(_validHddr);
}
if (_nextStage == eStage.BadSeqA)
{
//------------------------------------------------------------//
// //
// Inconsistency found. //
// //
//------------------------------------------------------------//
_nextStage = eStage.BadSeqB;
PrnParseCommon.addTextRow(
PrnParseRowTypes.eType.MsgError,
_table,
PrnParseConstants.eOvlShow.None,
"",
"",
"",
"Processing of header abandoned!");
}
if ((_nextStage == eStage.BadSeqB) && (_hddrRem != 0))
{
//------------------------------------------------------------//
// //
// Header does not appear to be valid. //
// Treat remainder of header as a binary sequence without //
// interpretation. //
// Check if remainder of download sequence is within the //
// buffer. //
// //
//------------------------------------------------------------//
if (_hddrRem > bufRem)
{
//--------------------------------------------------------//
// //
// Remainder of sequence is not in buffer. //
// Initiate continuation. //
// //
//--------------------------------------------------------//
contType = PrnParseConstants.eContType.PCLXLFontHddr;
binDataLen = bufRem;
_hddrRem = _hddrRem - bufRem;
linkData.setContinuation(contType);
}
else
{
contType = PrnParseConstants.eContType.None;
linkData.resetContData();
binDataLen = _hddrRem;
_hddrRem = 0;
}
if ((binDataLen) != 0)
{
//--------------------------------------------------------//
// //
// Some, or all, of the download data is contained within //
// the current 'block'. //
// //
//--------------------------------------------------------//
PrnParseData.processBinary(
_table,
PrnParseConstants.eOvlShow.None,
buf,
fileOffset,
bufOffset,
binDataLen,
"PCLXL Binary",
_showBinData,
false,
true,
_indxOffsetFormat,
_analysisLevel);
bufRem = bufRem - binDataLen;
bufOffset = bufOffset + binDataLen;
}
}
return(_validHddr);
}
//--------------------------------------------------------------------//
// M e t h o d //
// p a r s e S e q u e n c e s //
//--------------------------------------------------------------------//
// //
// Process sequences until end-point reached. //
// //
//--------------------------------------------------------------------//
private Boolean parseSequences(
ref Int32 bufRem,
ref Int32 bufOffset,
ref ToolCommonData.ePrintLang crntPDL,
ref Boolean endReached)
{
Int64 startPos;
PrnParseConstants.eContType contType =
PrnParseConstants.eContType.None;
Boolean continuation = false;
Boolean langSwitch = false;
Boolean badSeq = false;
Boolean invalidSeqFound = false;
Boolean dummyBool = false;
continuation = false;
startPos = _fileOffset + bufOffset;
while (!continuation && !langSwitch &&
!endReached && (bufRem > 0))
{
//------------------------------------------------------------//
// //
// Process data until language-switch or end of buffer, or //
// specified end point. //
// //
//------------------------------------------------------------//
if ((_endOffset != -1) &&
((_fileOffset + bufOffset) > _endOffset))
{
endReached = true;
}
else if (_buf[bufOffset] == PrnParseConstants.asciiEsc)
{
//--------------------------------------------------------//
// //
// Escape character found. //
// Switch to PCL language processing. //
// //
// Note that, in theory, only a few escape sequences are //
// expected: //
// <Esc>E Printer Reset //
// <Esc>%-12345X Universal Exit Language //
// but if we find an escape sequence, it's certainly not //
// PJL. //
// //
//--------------------------------------------------------//
langSwitch = true;
crntPDL = ToolCommonData.ePrintLang.PCL;
}
else if (_buf[bufOffset] != PrnParseConstants.asciiAtSign)
{
//--------------------------------------------------------//
// //
// Next character is NOT an @ symbol, so it can't be a //
// PJL command. //
// Switch to PCL language processing. //
// //
//--------------------------------------------------------//
langSwitch = true;
crntPDL = ToolCommonData.ePrintLang.PCL;
}
else
{
//--------------------------------------------------------//
// //
// Sequence does not start with an Escape character, so //
// it should be a PJL command. //
// PJL commands should start with @PJL and end with a //
// LineFeed (0x0a) character. //
// //
//--------------------------------------------------------//
if (bufRem < 5)
{
//----------------------------------------------------//
// //
// Insufficient characters remain in buffer to //
// identify the sequence as PJL, so initiate a //
// continuation action. //
// //
//----------------------------------------------------//
continuation = true;
contType = PrnParseConstants.eContType.PJL;
_linkData.setBacktrack(contType, -bufRem);
}
else if (_ascii.GetString(_buf, bufOffset, _lenPJLIntro)
!= "@PJL")
{
//----------------------------------------------------//
// //
// Not a PJL sequence. //
// Display the unexpected sequence up to the next //
// Escape character. //
// //
//----------------------------------------------------//
invalidSeqFound = true;
PrnParseCommon.addTextRow(
PrnParseRowTypes.eType.MsgWarning,
_table,
PrnParseConstants.eOvlShow.None,
"",
"*** Warning ***",
"",
"Unexpected sequence found");
PrnParseData.processLines(
_table,
PrnParseConstants.eOvlShow.None,
_linkData,
ToolCommonData.ePrintLang.PJL,
_buf,
_fileOffset,
bufRem,
ref bufRem,
ref bufOffset,
ref dummyBool,
true,
true,
false,
PrnParseConstants.asciiEsc,
"Data",
0,
_indxCharSetSubAct,
(Byte)_valCharSetSubCode,
_indxCharSetName,
_indxOffsetFormat,
_analysisLevel);
}
else
{
//-------------------------------------------------------------//
// //
// PJL sequence detected. //
// //
//-------------------------------------------------------------//
badSeq = processPJLCommand(ref bufRem,
ref bufOffset,
ref continuation,
ref langSwitch,
ref crntPDL);
if (badSeq)
{
invalidSeqFound = true;
}
}
}
}
_linkData.MakeOvlAct = PrnParseConstants.eOvlAct.Remove;
_linkData.MakeOvlSkipBegin = startPos;
_linkData.MakeOvlSkipEnd = _fileOffset + bufOffset;
return(invalidSeqFound);
}
