package/base-files/default/usr/lib/parse-config.awk

   1 # Copyright (C) 2006 OpenWrt.org
   2
   3 {
   4         line=$0
   5         gsub(/^[ \t]*/, "")
   6         gsub(/[ \t]*$/, "")
   7 }
   8
   9 $1 == "@define" {
  10         v[$2] = $3
  11 }
  12
  13 $1 == "@ifdef" {
  14         if_open = 1
  15         if (v[$2] != "") noprint = 0
  16         else noprint = 1
  17 }
  18
  19 $1 == "@ifndef" {
  20         if_open = 1
  21         if (v[$2] != "") noprint = 1
  22         else noprint = 0
  23 }
  24
  25 $1 == "@else" {
  26         if (noprint == 1) noprint = 0
  27         else noprint = 1
  28 }
  29
  30 ($1 !~ /^@[a-zA-Z]/) && (noprint != 1) {
  31         n=split(line "@@", a, /@@/)
  32         for (i=1; i<=n; i++) {
  33                 if ((i % 2) == 1) printf a[i]
  34                 else printf v[a[i]]
  35         }
  36         print ""
  37 }
  38
  39 $1 == "@endif" {
  40         if_open = 0
  41         noprint = 0
  42 }