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] "! */"
   8     sect = psect = defines = accessors = prior_ptype = ""
   9     values = "\nstatic const all_vars Defaults = {\n    { /* Globals: */\n"
  10     params = "\nstatic struct parm_struct parm_table[] = {"
  11     exp_line = "\n/********** EXP **********/\n"
  12     tdstruct = "typedef struct {"
  13 }
  14
  15 /^\s*$/ { next }
  16 /^#/ { next }
  17
  18 /^Globals:/ {
  19     if (defines != "") {
  20         print "The Globals section must come first!"
  21         defines = ""
  22         exit
  23     }
  24     defines = tdstruct
  25     exps = exp_values = exp_line
  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 = exp_line
  39     sect = "LOCAL"
  40     psect = ", P_LOCAL, &Vars.l."
  41     next
  42 }
  43
  44 /^(STRING|PATH|INTEGER|ENUM|BOOL)/ {
  45     ptype = $1
  46     name = $2
  47     $1 = $2 = ""
  48     sub(/^[ \t]+/, "")
  49
  50     if (ptype != prior_ptype) {
  51         defines = defines "\n/********** " ptype " **********/\n"
  52         values = values "\n/********** " ptype " **********/\n"
  53         params = params "\n"
  54         accessors = accessors "\n"
  55         prior_ptype = ptype
  56     }
  57
  58     if (ptype == "STRING" || ptype == "PATH") {
  59         atype = "STRING"
  60         vtype = "char*"
  61     } else if (ptype == "BOOL") {
  62         atype = vtype = "BOOL"
  63     } else {
  64         atype = "INTEGER"
  65         vtype = "int"
  66     }
  67
  68     # We have 2 variables that don't match their conf string. Oh well...
  69     if (name == "bind_address")
  70         spname = "address"
  71     else if (name == "rsync_port")
  72         spname = "port"
  73     else {
  74         spname = name
  75         gsub(/_/, " ", spname)
  76         gsub(/-/, "", name)
  77     }
  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     params = params " {\"" spname "\", 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         params = params "\n {NULL, P_BOOL, P_NONE, NULL, NULL, 0}\n};\n"
 109         print heading "\n\n" defines values params accessors > "daemon-parm.h"
 110     } else {
 111         print "Failed to parse the data in " ARGV[1]
 112         exit 1
 113     }
 114 }