src/util/getsyms.sed

   1 # emulate a C preprocessor (well, sort of)
   2 :TOP
   3 y/      / /
   4 s/  */ /g
   5 s%/\*.*\*/%%
   6 /\/\*/{
   7         :COMMENT
   8         /\*\//!{
   9                 s/.*//
  10                 N
  11                 bCOMMENT
  12         }
  13         s%^.*\*/%%
  14         bTOP
  15 }
  16 /^ *# *ifdef/{
  17         s/^ *# *ifdef //
  18         b
  19 }
  20 /^ *# *ifndef/{
  21         s/^ *# *ifndef //
  22         b
  23 }
  24 /^ *# *if.*defined/{
  25         s/^ *# *if //
  26         :IF
  27         /^defined/!{
  28                 :NUKE
  29                 s/^.//
  30                 /^defined/!bNUKE
  31         }
  32         h
  33         /^defined/s/^defined *( *\([A-Za-z0-9_]*\) *).*/\1/p
  34         g
  35         /^defined/s/^defined *( *\([[A-Za-z0-9_]*\) *)//
  36         /defined/!{
  37                 d
  38                 b
  39         }
  40         bIF
  41 }
  42 d