libsyscall/xcodescripts/filter_mig.awk

   1 #!/usr/bin/awk -f
   2
   3 # Usage: foo <template> <file>
   4 # Searches through file for instances of 'kern_return_t $FOO'
   5 # where $FOO is an line in the template file
   6 # and prepends the first line in the template file.
   7
   8 # Example template format:
   9 #       __WATCHOS_PROHIBITED
  10 #       act_get_state
  11 #       thread_get_state
  12 #
  13
  14 # BEGIN { print ARGV[1]; print ARGV[2] }
  15
  16 # In the first file, build array of lines
  17 NR==FNR {
  18         if (NR==1)
  19                 prefix=$0
  20         else
  21                 templates[$0];
  22         next
  23 }
  24
  25 # In the second file, match kern_return_t <template>
  26 # at the beginning of the line
  27 # print the prefix line if found
  28
  29 /^kern_return_t/ {
  30 #       print "match"
  31         if ($2 in templates) {
  32                 print prefix
  33         }
  34 }
  35
  36 # Pass through everything in the second file
  37 { print }