build/make_var_export.awk

   1 # Based on apr's make_export.awk, which is
   2 # based on Ryan Bloom's make_export.pl
   3
   4 /^#[ \t]*if(def)? (AP[RUI]?_|!?defined).*/ {
   5         if (old_filename != FILENAME) {
   6                 if (old_filename != "") printf("%s", line)
   7                 macro_no = 0
   8                 found = 0
   9                 count = 0
  10                 old_filename = FILENAME
  11                 line = ""
  12         }
  13         macro_stack[macro_no++] = macro
  14         macro = substr($0, length($1)+2)
  15         count++
  16         line = line "#ifdef " macro "\n"
  17         next
  18 }
  19
  20 /^#[ \t]*endif/ {
  21         if (count > 0) {
  22                 count--
  23                 line = line "#endif /* " macro " */\n"
  24                 macro = macro_stack[--macro_no]
  25         }
  26         if (count == 0) {
  27                 if (found != 0) {
  28                         printf("%s", line)
  29                 }
  30                 line = ""
  31         }
  32         next
  33 }
  34
  35 function add_symbol (sym_name) {
  36         if (count) {
  37                 found++
  38         }
  39         for (i = 0; i < count; i++) {
  40                 line = line "\t"
  41         }
  42         line = line sym_name "\n"
  43
  44         if (count == 0) {
  45                 printf("%s", line)
  46                 line = ""
  47         }
  48 }
  49
  50 /^[ \t]*(extern[ \t]+)?AP[RUI]?_DECLARE_DATA .*;$/ {
  51        varname = $NF;
  52        gsub( /[*;]/, "", varname);
  53        gsub( /\[.*\]/, "", varname);
  54        add_symbol(varname);
  55 }
  56
  57 END {
  58         printf("%s", line)
  59 }