Changeset 364 for pkpgcounter/trunk/pkpgpdls/pdf.py

Timestamp:

08/16/06 16:20:35 (18 years ago)

Author:

jerome

Message:

Added support for the computation of ink coverage for the PDF format.

Files:

• pkpgcounter/trunk/pkpgpdls/pdf.py (modified) (2 diffs)

pkpgcounter/trunk/pkpgpdls/pdf.py

@@ -25 +25 @@
 
 import sys
+import popen2
 import re
 
@@ -104 +105 @@
         return pagecount    
         
+    def convertToTiffMultiPage24NC(self, fname, dpi) :
+        """Converts the input file to TIFF format, X dpi, 24 bits per pixel, uncompressed.
+           Writes TIFF datas to the outputfile file object.
+        """   
+        command = 'gs -sDEVICE=tiff24nc -dPARANOIDSAFER -dNOPAUSE -dBATCH -dQUIET -r%i -sOutputFile="%s" -' % (dpi, fname)
+        child = popen2.Popen4(command)
+        try :
+            data = self.infile.read(pdlparser.MEGABYTE)    
+            while data :
+                child.tochild.write(data)
+                data = self.infile.read(pdlparser.MEGABYTE)
+            child.tochild.flush()
+            child.tochild.close()    
+        except (IOError, OSError), msg :    
+            raise pdlparser.PDLParserError, "Problem during conversion to TIFF : %s" % msg
+            
+        child.fromchild.close()
+        try :
+            child.wait()
+        except OSError, msg :    
+            raise pdlparser.PDLParserError, "Problem during conversion to TIFF : %s" % msg
+        
 def test() :        
     """Test function."""