daemon-parm.awk

   1 #!/usr/bin/awk -f
   2
   3 # The caller must pass arg: daemon-parm.txt
   4 # The resulting code is output into daemon-parm.h
   5
   6 BEGIN {
   7     heading = "/* DO NOT EDIT THIS FILE!  It is auto-generated from a list of values in " ARGV[1] "! */\n\n"
   8     sect = psect = defines = accessors = prior_ptype = ""
   9     parms = "\nstatic struct parm_struct parm_table[] = {"
  10     comment_fmt = "\n/********** %s **********/\n"
  11     tdstruct = "typedef struct {"
  12 }
  13
  14 /^\s*$/ { next }
  15 /^#/ { next }
  16
  17 /^Globals:/ {
  18     if (defines != "") {
  19         print "The Globals section must come first!"
  20         defines = ""
  21         exit
  22     }
  23     defines = tdstruct
  24     values = "\nstatic const all_vars Defaults = {\n    { /* Globals: */\n"
  25     exps = exp_values = sprintf(comment_fmt, "EXP")
  26     sect = "GLOBAL"
  27     psect = ", P_GLOBAL, &Vars.g."
  28     next
  29 }
  30
  31 /^Locals:/ {
  32     if (sect == "") {
  33         print "The Locals section must come after the Globals!"
  34         exit
  35     }
  36     defines = defines exps "} global_vars;\n\n" tdstruct
  37     values = values exp_values "\n    }, { /* Locals: */\n"
  38     exps = exp_values = sprintf(comment_fmt, "EXP")
  39     sect = "LOCAL"
  40     psect = ", P_LOCAL, &Vars.l."
  41     next
  42 }
  43
  44 /^(STRING|CHAR|PATH|INTEGER|ENUM|OCTAL|BOOL|BOOLREV|BOOL3)[ \t]/ {
  45     ptype = $1
  46     name = $2
  47     $1 = $2 = ""
  48     sub(/^[ \t]+/, "")
  49
  50     if (ptype != prior_ptype) {
  51         comment = sprintf(comment_fmt, ptype)
  52         defines = defines comment
  53         values = values comment
  54         parms = parms "\n"
  55         accessors = accessors "\n"
  56         prior_ptype = ptype
  57     }
  58
  59     if (ptype == "STRING" || ptype == "PATH") {
  60         atype = "STRING"
  61         vtype = "char*"
  62     } else if (ptype ~ /BOOL/) {
  63         atype = vtype = "BOOL"
  64     } else if (ptype == "CHAR") {
  65         atype = "CHAR"
  66         vtype = "char"
  67     } else {
  68         atype = "INTEGER"
  69         vtype = "int"
  70     }
  71
  72     # The name might be var_name|public_name
  73     pubname = name
  74     sub(/\|.*/, "", name)
  75     sub(/.*\|/, "", pubname)
  76     gsub(/_/, " ", pubname)
  77     gsub(/-/, "", name)
  78
  79     if (ptype == "ENUM")
  80         enum = "enum_" name
  81     else
  82         enum = "NULL"
  83
  84     defines = defines "\t" vtype " " name ";\n"
  85     values = values "\t" $0 ", /* " name " */\n"
  86     parms = parms " {\"" pubname "\", P_" ptype psect name ", " enum ", 0},\n"
  87     accessors = accessors "FN_" sect "_" atype "(lp_" name ", " name ")\n"
  88
  89     if (vtype == "char*") {
  90         exps = exps "\tBOOL " name "_EXP;\n"
  91         exp_values = exp_values "\tFalse, /* " name "_EXP */\n"
  92     }
  93
  94     next
  95 }
  96
  97 /./ {
  98     print "Extraneous line:" $0
  99     defines = ""
 100     exit
 101 }
 102
 103 END {
 104     if (sect != "" && defines != "") {
 105         defines = defines exps "} local_vars;\n\n"
 106         defines = defines tdstruct "\n\tglobal_vars g;\n\tlocal_vars l;\n} all_vars;\n"
 107         values = values exp_values "\n    }\n};\n\nstatic all_vars Vars;\n"
 108         parms = parms "\n {NULL, P_BOOL, P_NONE, NULL, NULL, 0}\n};\n"
 109         print heading defines values parms accessors > "daemon-parm.h"
 110     } else {
 111         print "Failed to parse the data in " ARGV[1]
 112         exit 1
 113     }
 114 }