So I'd like to add a "footer" (an attribution) to the bottom of every page of a pdf file I am generating via postscript with groff in linux. I am converting the file from ps to pdf myself, with the ps2pdf tool, so I have access to both formats.
These two posts have been somewhat helpful:
How to add page numbers to Postscript/PDF
How can I make a program overlay text on a postscript file?
I'm not against using the first method, but I don't have access to the pdflatex
utility mentioned in the first script, nor do I have the option to install it on the machine that needs to do the work.
It looks like the second method could possibly work, but I have version 8.15 of ghostscript installed and I didn't see many of the flags listed on the man page ( http://unix.browserdebug.com/man/gs/ ). I think I have access to the "-c" flag to insert some postscript code, even though it is not listed. Anyhow, here are two commands I tried unsuccessfully:
gs -o output.pdf -sDEVICE=pdfwrite -g5030x5320 \ -c "/Helvetica-Italic findfont 15 scalefont setfont 453 482 moveto (test-string) show" \ -f input.ps
that gives me this:
Unknown switch -o - ignoring ESP Ghostscript 815.02 (2006-04-19) Copyright (C) 2004 artofcode LLC, Benicia, CA. All rights reserved. This software comes with NO WARRANTY: see the file PUBLIC for details. ERROR: /undefinedfilename in (output.pdf) Operand stack: Execution stack: %interp_exit .runexec2 --nostringval-- --nostringval-- --nostringval-- 2 %stopped_push --nostringval-- --nostringval-- --nostringval-- false 1 %stopped_push Dictionary stack: --dict:1117/1686(ro)(G)-- --dict:0/20(G)-- --dict:102/200(L)-- Current allocation mode is local Last OS error: 2 ESP Ghostscript 815.02: Unrecoverable error, exit code 1
So obviously the -o flag has a problem and so I did some research and tried this syntax:
gs -sOUTPUTFILE=output.pdf -sDEVICE=pdfwrite -g5030x5320 \ -c "/Helvetica-Italic findfont 15 scalefont setfont 453 482 moveto (test-string) show" \ -f input.ps
which outputs this and makes me hit return 4 times (maybe there are 4 pages in input.ps)
ESP Ghostscript 815.02 (2006-04-19) Copyright (C) 2004 artofcode LLC, Benicia, CA. All rights reserved. This software comes with NO WARRANTY: see the file PUBLIC for details. Can't find (or can't open) font file /usr/share/ghostscript/8.15/Resource/Font/Helvetica-Italic. Can't find (or can't open) font file Helvetica-Italic. Querying operating system for font files... Didn't find this font on the system! Substituting font Helvetica-Oblique for Helvetica-Italic. Loading NimbusSanL-ReguItal font from /usr/share/fonts/default/Type1/n019023l.pfb... 3742416 2168114 2083056 759694 1 done. Loading NimbusRomNo9L-ReguItal font from /usr/share/fonts/default/Type1/n021023l.pfb... 3781760 2362033 2365632 1015713 1 done. Loading NimbusRomNo9L-Medi font from /usr/share/fonts/default/Type1/n021004l.pfb... 3865136 2547267 2365632 1029818 1 done. Loading NimbusRomNo9L-Regu font from /usr/share/fonts/default/Type1/n021003l.pfb... 4089592 2759001 2365632 1032885 1 done. Using NimbusRomanNo9L-Regu font for NimbusRomNo9L-Regu. >>showpage, press <return> to continue<< >>showpage, press <return> to continue<< >>showpage, press <return> to continue<< >>showpage, press <return> to continue<<
So it seems like it would be simple enough to use gs
to simply insert something in a ps file, but it is proving to be quite complicated...
In your PostScript file you can use a page counter and redefine showpage to display it in the footer. Here's a sample program:
4 dict begin
/showpage_org /showpage load def % you'll need this later!
/page_num 0 def
/page_str 3 string def % Page numbers -99 to 999 supported, error if > 3 char
/showpage % with page number footer
{
gsave
/Courier findfont 10 scalefont setfont % Set the font for the footer
/page_num page_num 1 add def % increment page number counter
10 10 moveto (Page ) show
page_num page_str cvs show % convert page number integer to a string and show it
grestore
showpage_org % use the original showpage
} def
%Page 1
/Courier findfont 22 scalefont setfont
100 500 moveto (Hello) show
showpage
%Page 2
100 500 moveto (World) show
showpage
end
ESP Ghostscript is O-o-o-o-old. Don't use it any more unless you absolutely, absolutely cannot avoid it. It was a fork of the original Ghostscript which used by CUPS for a while. (And after some problems between developers where resolved, more recent versions of CUPS now also use the GPL Ghostscript again...)
Newer GPL Ghostscript versions are here: http://www.ghostscript.com/releases/
Also, -o out.pdf
is only a shorthand for -dBATCH -dNOPAUSE -sOutputFile=outpdf
. So you should try this. (The -dNOPAUSE
part relieves you from hitting <return>
for every page advance....).
Lastly, don't expect the full range of documentation being provided by a third party man gs
page. Rather refer to the original Ghostscript documentation for the version you use, the most important parts being:
Update: Ghostscript has moved to Git (instead of Subversion) for their source code repository. Therefor the following links have changed, repeatedly:
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