如何在 PS 文件中添加额外的 PostScript 命令

Question

My requirement is to add additional setpagedevice commands (eg: staple, punch, etc) like the below in a PS file.

**</Staple 3> setpagedevice**      % Start the first subset to be stapled
%Page 1
%Page 2
%Page 3
**</Staple 0> setpagedevice**     % End the first subset
**</Staple 3> setpagedevice**    % Start the second subset to be stapled
%Page 4
%Page 5
%Page 6
%Page 7
**</Staple 0> setpagedevice**     % End the second subset

I've to do this operation in a C# application. I would like to know whether there are any existing libraries that will allow me to insert setpagedevice commands in a PS file based on the specified page numbers. For example, I should be able to insert a staple setpagedevice command after 10th page in a PS file.

Answer 1

@KenS 's comment has the answer which I was looking for.

If the program conforms to the Adobe Document Structure Convention then you could look for the %%Page: comment and modify the file that way. Alternatively you could run the PostScript file as input to Ghostscript and use the ps2write device to produce a new PostScript program, you could probably use the PSPageOptions switch to include the specified program fragment on the specified pages