Changeset 1701

Timestamp:

09/04/04 16:01:47 (20 years ago)

Author:

jalet

Message:

Support for PCL3 (HP Deskjets) added to generic PDL parser

Location:

pykota/trunk

Files:

• FAQ (modified) (1 diff)
• NEWS (modified) (1 diff)
• pykota/pdlanalyzer.py (modified) (11 diffs)
• pykota/version.py (modified) (1 diff)
• README (modified) (1 diff)
• tests/runtest.sh (modified) (1 diff)

pykota/trunk/FAQ

@@ -62 +62 @@
   
     In PyKota, the term 'dumb printer' defines a printer which doesn't 
-    natively understand PostScript, PCL5, PCLXL (aka PCL6), PDF or ESC/P2
-    and doesn't have an internal page counter, and for which you don't 
-    know how to compute a job's size in number of pages by analyzing its 
-    content. 
+    natively understand PostScript, PCL5 (up to), PCLXL (aka PCL6), PDF 
+    or ESC/P2 and doesn't have an internal page counter, and for which 
+    you don't know how to compute a job's size in number of pages by 
+    analyzing its content. 
     Any printer which is not a 'dumb printer' according to the above 
-    definition is supported by PyKota. HP Deskjet printers are 
-    currently considered as "dumb" printers by PyKota.
+    definition is supported by PyKota. 
 
   * How can I make PyKota work with my non-postscript printer under 

pykota/trunk/NEWS

@@ -22 +22 @@
 PyKota NEWS :
 
+    - 1.20alpha8 :
+    
+        - Added full support of PCL3 : HP Deskjet printers are now 
+          supported.
+        
     - 1.20alpha7 :
     

pykota/trunk/pykota/pdlanalyzer.py

@@ -22 +22 @@
 #
 # $Log$
+# Revision 1.40  2004/09/04 14:01:47  jalet
+# Support for PCL3 (HP Deskjets) added to generic PDL parser
+#
 # Revision 1.39  2004/09/02 23:30:05  jalet
 # Comments
@@ -158 +161 @@
 KILOBYTE = 1024    
 MEGABYTE = 1024 * KILOBYTE    
+LASTBLOCKSIZE = int(KILOBYTE / 4)
 
 class PDLAnalyzerError(Exception):
@@ -325 +329 @@
                      "&a" : "G", # TODO : 0 means next side, 1 front side, 2 back side
                      "*g" : "W",
+                     "*r" : "sbABC",
                      # "*b" : "VW", # treated specially because it occurs very often
                    }  
-        pagecount = resets = ejects = backsides = 0
+        pagecount = resets = ejects = backsides = startgfx = endgfx = strangegfx = 0
+        starb = ispcl3 = 0
         tag = None
         copies = {}
@@ -337 +343 @@
                     pagecount += 1
                 elif char == "\033" :    
+                    starb = 0
                     #
+                    #     <ESC>*b###y#m###v###w... -> PCL3 raster graphics
                     #     <ESC>*b###W -> Start of a raster data row/block
                     #     <ESC>*b###V -> Start of a raster data plane
@@ -345 +353 @@
                     #     <ESC>*m###W -> Start of a download dither matrix block
                     #     <ESC>*v###W -> Start of a configure image data block
+                    #     <ESC>*r1A -> Start Gfx 
                     #     <ESC>(s###W -> Start of a characters description block
                     #     <ESC>)s###W -> Start of a fonts description block
@@ -363 +372 @@
                     tag = tagstart + minfile[pos] ; pos += 1
                     if tag == "*b" : 
+                        starb = 1
                         tagend = "VW"
                     else :    
@@ -381 +391 @@
                         elif (tag == "&l") and (char == "H") and (size == 0) :    
                             ejects += 1         # Eject 
+                        elif (tag == "*r") :
+                            # Special tests for PCL3
+                            if (char == "s") and size :
+                                while 1 :
+                                    char = minfile[pos] ; pos += 1
+                                    if char == "A" :
+                                        break
+                            elif (char == "b") and (minfile[pos] == "C") and not size :
+                                ispcl3 = 1 # Certainely a PCL3 file
+                            startgfx += (char == "A") and (minfile[pos - 2] in ("0", "1", "2", "3")) # Start Gfx
+                            endgfx += (not size) and (char in ("C", "B")) # End Gfx
                         elif (tag == "&a") and (size == 2) :
                             backsides += 1      # Back side in duplex mode
@@ -390 +411 @@
                                 size += 1
                             pos += size    
+                else :                            
+                    if starb :
+                        # special handling of PCL3 in which 
+                        # *b introduces combined ESCape sequences
+                        size = 0
+                        while 1 :
+                            char = minfile[pos] ; pos += 1
+                            if not char.isdigit() :
+                                break
+                            size = (size * 10) + int(char)    
+                        if char in ("w", "v") :    
+                            ispcl3 = 1  # certainely a PCL3 document
+                            pos += size - 1
+                        elif char in ("y", "m") :    
+                            ispcl3 = 1  # certainely a PCL3 document
+                            pos -= 1    # fix position : we were ahead
         except IndexError : # EOF ?
             minfile.close() # reached EOF
@@ -415 +452 @@
             nb = copies.get(pnum, copies.get(pnum-1, copies.get(0, 1)))
             pagecount += (nb - 1)
-        return pagecount
-        
-class PCL3GUIAnalyzer :
-    def __init__(self, infile) :
-        """Initialize PCL3GUI Analyzer."""
-        self.infile = infile
-        
-    def getJobSize(self) :     
-        """Count pages in a PCL3GUI document.
-         
-           Not much documentation available, so we will count occurences
-           of <ESC>*r1A which is start of graphical data.
-           
-           This is FAR from being accurate. PCL3 ressembles PCL5 in fact,
-           and PCL parser should be made better, but some documentation
-           definitely lacks.
-        """
-        data = self.infile.read()
-        pagecount = data.count("\033*r1A") # TODO : Allowed values 0, 1, 2, 3 after *r
+            
+        # in PCL3 files, there's one Start Gfx tag per page
+        if ispcl3 :
+            if endgfx == int(startgfx / 2) : # special case for cdj1600
+                pagecount = endgfx 
+            elif startgfx :
+                pagecount = startgfx
+            elif endgfx :    
+                pagecount = endgfx
+            
         return pagecount
         
@@ -733 +761 @@
                 pass    # probably stdin, which is not seekable
         
-    def isPostScript(self, data) :    
+    def isPostScript(self, sdata, edata) :    
         """Returns 1 if data is PostScript, else 0."""
-        if data.startswith("%!") or \
-           data.startswith("\004%!") or \
-           data.startswith("\033%-12345X%!PS") or \
-           ((data[:128].find("\033%-12345X") != -1) and \
-             ((data.find("LANGUAGE=POSTSCRIPT") != -1) or \
-              (data.find("LANGUAGE = POSTSCRIPT") != -1) or \
-              (data.find("LANGUAGE = Postscript") != -1))) or \
-              (data.find("%!PS-Adobe") != -1) :
+        if sdata.startswith("%!") or \
+           sdata.startswith("\004%!") or \
+           sdata.startswith("\033%-12345X%!PS") or \
+           ((sdata[:128].find("\033%-12345X") != -1) and \
+             ((sdata.find("LANGUAGE=POSTSCRIPT") != -1) or \
+              (sdata.find("LANGUAGE = POSTSCRIPT") != -1) or \
+              (sdata.find("LANGUAGE = Postscript") != -1))) or \
+              (sdata.find("%!PS-Adobe") != -1) :
             return 1
         else :    
             return 0
         
-    def isPDF(self, data) :    
+    def isPDF(self, sdata, edata) :    
         """Returns 1 if data is PDF, else 0."""
-        if data.startswith("%PDF-") or \
-           data.startswith("\033%-12345X%PDF-") or \
-           ((data[:128].find("\033%-12345X") != -1) and (data.upper().find("LANGUAGE=PDF") != -1)) or \
-           (data.find("%PDF-") != -1) :
+        if sdata.startswith("%PDF-") or \
+           sdata.startswith("\033%-12345X%PDF-") or \
+           ((sdata[:128].find("\033%-12345X") != -1) and (sdata.upper().find("LANGUAGE=PDF") != -1)) or \
+           (sdata.find("%PDF-") != -1) :
             return 1
         else :    
             return 0
         
-    def isPCL(self, data) :    
+    def isPCL(self, sdata, edata) :    
         """Returns 1 if data is PCL, else 0."""
-        if data.startswith("\033E\033") or \
-           (data[:128].find("\033%-12345X") != -1) :
+        if sdata.startswith("\033E\033") or \
+           (sdata.startswith("\033*rbC") and (not edata[-3:] == "\f\033@")) or \
+           (sdata.find("\033%-12345X") != -1) :
             return 1
         else :    
             return 0
         
-    def isPCL3GUI(self, data) :    
-        """Returns 1 if data is PCL3GUI, else 0."""
-        if data.find("@PJL ENTER LANGUAGE=PCL3GUI") != -1 :
+    def isPCLXL(self, sdata, edata) :    
+        """Returns 1 if data is PCLXL aka PCL6, else 0."""
+        if ((sdata[:128].find("\033%-12345X") != -1) and \
+             (sdata.find(" HP-PCL XL;") != -1) and \
+             ((sdata.find("LANGUAGE=PCLXL") != -1) or \
+              (sdata.find("LANGUAGE = PCLXL") != -1))) :
             return 1
         else :    
             return 0
-        
-    def isPCLXL(self, data) :    
-        """Returns 1 if data is PCLXL aka PCL6, else 0."""
-        if ((data[:128].find("\033%-12345X") != -1) and \
-             (data.find(" HP-PCL XL;") != -1) and \
-             ((data.find("LANGUAGE=PCLXL") != -1) or \
-              (data.find("LANGUAGE = PCLXL") != -1))) :
-            return 1
-        else :    
-            return 0
-            
-    def isESCP2(self, data) :        
+            
+    def isESCP2(self, sdata, edata) :        
         """Returns 1 if data is ESC/P2, else 0."""
-        if data.startswith("\033@") or \
-           data.startswith("\033*") or \
-           data.startswith("\n\033@") :
+        if sdata.startswith("\033@") or \
+           sdata.startswith("\033*") or \
+           sdata.startswith("\n\033@") :
             return 1
         else :    
@@ -799 +821 @@
         self.infile.seek(0)
         firstblock = self.infile.read(4 * KILOBYTE)
+        try :
+            self.infile.seek(-LASTBLOCKSIZE, 2)
+        except IOError :    
+            lastblock = ""
+        else :    
+            lastblock = self.infile.read(LASTBLOCKSIZE)
         self.infile.seek(0)
-        if self.isPostScript(firstblock) :
+        if self.isPostScript(firstblock, lastblock) :
             return PostScriptAnalyzer
-        elif self.isPCLXL(firstblock) :    
+        elif self.isPCLXL(firstblock, lastblock) :    
             return PCLXLAnalyzer
-        elif self.isPDF(firstblock) :    
+        elif self.isPDF(firstblock, lastblock) :    
             return PDFAnalyzer
-        elif self.isPCL3GUI(firstblock) :    
-            return PCL3GUIAnalyzer
-        elif self.isPCL(firstblock) :    
+        elif self.isPCL(firstblock, lastblock) :    
             return PCLAnalyzer
-        elif self.isESCP2(firstblock) :    
+        elif self.isESCP2(firstblock, lastblock) :    
             return ESCP2Analyzer
         else :    

pykota/trunk/pykota/version.py

@@ -22 +22 @@
 #
 
-__version__ = "1.20alpha7_unofficial"
+__version__ = "1.20alpha8_unofficial"
 
 __doc__ = """PyKota : a complete Printing Quota Solution for CUPS and LPRng."""

pykota/trunk/README

@@ -58 +58 @@
           This is completely configurable.
           
-        - Supports DSC compliant and binary PostScript, PDF, PCL5, 
+        - Supports DSC compliant and binary PostScript, PDF, PCL5 (up to), 
           PCLXL (aka PCL6) and ESC/P2 printers natively for software
           accounting methods. More formats to come.
-          
-        - Hewlett-Packard Deskjet printers are currently NOT supported.  
             
     Quota systems :        

pykota/trunk/tests/runtest.sh

@@ -2 +2 @@
 
 echo -n "Generating testsuite..."
-/bin/rm -f testsuite.* master2.ps
 gunzip <master.ps.gz >master2.ps
-for device in laserjet ljet3 ljet4 lj5gray lj5mono pxlmono pxlcolor pdfwrite pswrite psgray psmono psrgb epson epsonc eps9mid eps9high stcolor st800 escp escpc ; do
-    gs -dQUIET -dBATCH -dNOPAUSE -sOutputFile="testsuite.$device" -sDEVICE="$device" master2.ps ;
+for device in lj250 lj3100sw lj4dith lj4dithp ljet2p ljet3d ljet4d ljet4pjl ljetplus laserjet ljet3 ljet4 lj5gray lj5mono pxlmono pxlcolor pdfwrite pswrite psgray psmono psrgb epson epsonc eps9mid eps9high stcolor st800 escp escpc pcl3 cdeskjet cdj1600 cdj500 cdj550 cdj670 cdj850 cdj880 cdj890 cdj970 cdjcolor cdjmono dj505j djet500 djet500c hpdj1120c hpdj310 hpdj320 hpdj340 hpdj400 hpdj500 hpdj500c hpdj510 hpdj520 hpdj540 hpdj550c hpdj560c hpdj600 hpdj660c hpdj670c hpdj680c hpdj690c hpdj850c hpdj855c hpdj870c hpdj890c hpdjplus hpdjportable ; do
+    if ! [ -f "testsuite.$device" ]  ; then
+        gs -dQUIET -dBATCH -dNOPAUSE -sOutputFile="testsuite.$device" -sDEVICE="$device" master2.ps ; 
+    fi ;
     done
 echo