Changeset 1676

Timestamp:

08/22/04 01:16:57 (20 years ago)

Author:

jalet

Message:

First draft of ESC/P2 (mini-)parser.

Location:

pykota/trunk

Files:

• NEWS (modified) (1 diff)
• pykota/pdlanalyzer.py (modified) (4 diffs)
• pykota/version.py (modified) (1 diff)
• tests/runtest.sh (modified) (1 diff)

pykota/trunk/NEWS

@@ -22 +22 @@
 PyKota NEWS :
 
+    - 1.20alpha2 :
+    
+        - First version of ESC/P2 analyzer. Seems to work
+          ok at least with 'epson', 'epsonc', 'eps9mid' 
+          and 'esp9high' ghostscript devices. Needs more
+          work to correctly analyze other devices.
+        
     - 1.20alpha1 : 
     

pykota/trunk/pykota/pdlanalyzer.py

@@ -22 +22 @@
 #
 # $Log$
+# Revision 1.30  2004/08/21 23:16:57  jalet
+# First draft of ESC/P2 (mini-)parser.
+#
 # Revision 1.29  2004/08/11 16:25:38  jalet
 # Fixed index problem in PCLXL parser when retrieving number of copies for
@@ -213 +216 @@
         for line in self.infile.xreadlines() : 
             pagecount += len(regexp.findall(line))
+        return pagecount    
+        
+class ESCP2Analyzer :
+    def __init__(self, infile) :
+        """Initialize ESC/P2 Analyzer."""
+        self.infile = infile
+                
+    def getJobSize(self) :    
+        """Counts pages in an ESC/P2 document."""
+        # typical new page marker is Carriage Return (with optional Line Feed)
+        # followed by Form Feed, followed by Escape character
+        marker1 = chr(13) + chr(12) + chr(27)
+        marker2 = chr(13) + chr(10) + chr(12) + chr(27)
+        pagecount = 0
+        for line in self.infile.xreadlines() : 
+            c = line.count(marker1)
+            if not c :
+                c = line.count(marker2)
+            pagecount += c    
         return pagecount    
         
@@ -685 +707 @@
             return 0
             
+    def isESCP2(self, data) :        
+        """Returns 1 if data is ESC/P2, else 0."""
+        if (data[:2] == "\033@") or (data[:2] == "\033*") :
+            return 1
+        else :    
+            return 0
+    
     def detectPDLHandler(self) :    
         """Tries to autodetect the document format.
@@ -702 +731 @@
         elif self.isPDF(firstblock) :    
             return PDFAnalyzer
+        elif self.isESCP2(firstblock) :    
+            return ESCP2Analyzer
         else :    
             raise PDLAnalyzerError, "Analysis of first data block failed."

pykota/trunk/pykota/version.py

@@ -22 +22 @@
 #
 
-__version__ = "1.20alpha1_unofficial"
+__version__ = "1.20alpha2_unofficial"
 
 __doc__ = """PyKota : a complete Printing Quota Solution for CUPS and LPRng."""

pykota/trunk/tests/runtest.sh

@@ -4 +4 @@
 /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 ; do
+for device in laserjet ljet3 ljet4 lj5gray lj5mono pxlmono pxlcolor pdfwrite pswrite psgray psmono psrgb epson epsonc eps9mid eps9high ; do
     gs -dQUIET -dBATCH -dNOPAUSE -sOutputFile="testsuite.$device" -sDEVICE="$device" master2.ps ;
     done