*** C:\Program Files\Python22\Lib\zipfile.py	Thu Dec  6 01:23:26 2001
--- zipfile.py	Tue Mar 11 00:56:10 2003
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*** 1,6 ****
--- 1,8 ----
+ 
  "Read and write ZIP files."
  # Written by James C. Ahlstrom jim@interet.com
  # All rights transferred to CNRI pursuant to the Python contribution agreement
+ # Replace and delete added by Nev Delap, Nev@Delap.com, March 2003. All rights relinquished to Python.
  
  import struct, os, time
  import binascii
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*** 452,457 ****
--- 454,510 ----
          self.filelist.append(zinfo)
          self.NameToInfo[zinfo.filename] = zinfo
  
+     def replace(self, filename, arcname=None, compress_type=None):
+         """Delete arcname, and put the bytes from filename into the
+         archive under the name arcname."""
+         deleteName = arcname
+         if deleteName is None:
+             deleteName = filename
+         self.delete(deleteName)
+         self.write(filename, arcname, compress_type)
+ 
+     def replacestr(self, zinfo, bytes):
+         """Delete zinfo.filename, and write a new file into the archive. The
+         contents is the string 'bytes'."""
+         self.delete(zinfo.filename)
+         self.writestr(zinfo, bytes)
+ 
+     def delete(self, name):
+         """Delete the file from the archive. If it appears multiple
+         times only the first instance will be deleted."""
+         for i in range (0, len(self.filelist)):
+             if self.filelist[i].filename == name:
+                 if self.debug:
+                     print "Removing", name
+                 deleted_offset = self.filelist[i].header_offset
+                 deleted_size   = (self.filelist[i].file_offset - self.filelist[i].header_offset) + self.filelist[i].compress_size
+                 zinfo_size = struct.calcsize(structCentralDir) + len(self.filelist[i].filename) + len(self.filelist[i].extra)
+                 # Remove the file's data from the archive.
+                 current_offset = self.fp.tell()
+                 self.fp.seek(0, 2)
+                 archive_size = self.fp.tell()
+                 self.fp.seek(deleted_offset + deleted_size)
+                 buf = self.fp.read()
+                 self.fp.seek(deleted_offset)
+                 self.fp.write(buf)
+                 self.fp.truncate(archive_size - deleted_size - zinfo_size)
+                 if current_offset > deleted_offset + deleted_size:
+                     current_offset -= deleted_size
+                 elif current_offset > deleted_offset:
+                     current_offset = deleted_offset
+                 self.fp.seek(current_offset, 0)
+                 # Remove file from central directory.
+                 del self.filelist[i]
+                 # Adjust the remaining offsets in the central directory.
+                 for j in range (i, len(self.filelist)):
+                     if self.filelist[j].header_offset > deleted_offset:
+                         self.filelist[j].header_offset -= deleted_size
+                     if self.filelist[j].file_offset > deleted_offset:
+                         self.filelist[j].file_offset -= deleted_size
+                 return
+         if self.debug:
+             print name, "not in archive"
+ 
      def __del__(self):
          """Call the "close()" method in case the user forgot."""
          self.close()