Changeset 193 for pkpgcounter/trunk/pdlanalyzer/escp2.py

Timestamp:

04/04/05 00:28:37 (20 years ago)

Author:

jerome

Message:

Moved the code into the submodules

Files:

• pkpgcounter/trunk/pdlanalyzer/escp2.py (modified) (2 diffs)

pkpgcounter/trunk/pdlanalyzer/escp2.py

@@ +1 @@
+#! /usr/bin/env python
+# -*- coding: ISO-8859-15 -*-
 #
 # pkpgcounter : a generic Page Description Language parser
@@ -19 +21 @@
 # $Id$
 #
+
+import sys
+
+from pdlanalyzer.pdlparser import PDLParser
+
+class ESCP2Parser(PDLParser) :
+    """A parser for ESC/P2 documents."""
+    def getJobSize(self) :    
+        """Counts pages in an ESC/P2 document."""
+        # with Gimpprint, at least, for each page there
+        # are two Reset Printer sequences (ESC + @)
+        marker1 = "\033@"
+        
+        # with other software or printer driver, we
+        # may prefer to search for "\r\n\fESCAPE"
+        # or "\r\fESCAPE"
+        marker2r = "\r\f\033"
+        marker2rn = "\r\n\f\033"
+        
+        # and ghostscript's stcolor for example seems to
+        # output ESC + @ + \f for each page plus one
+        marker3 = "\033@\f"
+        
+        # while ghostscript's escp driver outputs instead
+        # \f + ESC + @
+        marker4 = "\f\033@"
+        
+        data = self.infile.read()
+        pagecount1 = data.count(marker1)
+        pagecount2 = max(data.count(marker2r), data.count(marker2rn))
+        pagecount3 = data.count(marker3)
+        pagecount4 = data.count(marker4)
+            
+        if pagecount2 :    
+            return pagecount2
+        elif pagecount3 > 1 :     
+            return pagecount3 - 1
+        elif pagecount4 :    
+            return pagecount4
+        else :    
+            return int(pagecount1 / 2)       
+        
+def test() :        
+    """Test function."""
+    raise RuntimeError, "Not implemented !"
+    
+if __name__ == "__main__" :    
+    test()