[reportlab-users] Reportlab performance

[Henning von Bargen]

Another idea that came to my mind:

To generate a TOC in a single pass (for most cases),
one could do some more magic with ReportLab.

If you don't need page numbers for those pages
that contain the TOC itself
(and start with page "1" as the first page after the TOC),
you could tweak ReportLab as follows:

1. Generate the content, collecting page references
   for the TOC.
2. Generate the TOC (since all page references are
   solved, no problem) and mark the TOC pages somehow.
3. In the final step of the PDF creation process, when
   the /Pages object is written, just put the TOC pages 
   before the content pages.

A single pass does not work if a content page contains
a forward reference (but this is not TOC specific).

Henning