lib/et/et_h.awk

   1 BEGIN {
   2 char_shift=64
   3 ## "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_";
   4 c2n["A"]=1
   5 c2n["B"]=2
   6 c2n["C"]=3
   7 c2n["D"]=4
   8 c2n["E"]=5
   9 c2n["F"]=6
  10 c2n["G"]=7
  11 c2n["H"]=8
  12 c2n["I"]=9
  13 c2n["J"]=10
  14 c2n["K"]=11
  15 c2n["L"]=12
  16 c2n["M"]=13
  17 c2n["N"]=14
  18 c2n["O"]=15
  19 c2n["P"]=16
  20 c2n["Q"]=17
  21 c2n["R"]=18
  22 c2n["S"]=19
  23 c2n["T"]=20
  24 c2n["U"]=21
  25 c2n["V"]=22
  26 c2n["W"]=23
  27 c2n["X"]=24
  28 c2n["Y"]=25
  29 c2n["Z"]=26
  30 c2n["a"]=27
  31 c2n["b"]=28
  32 c2n["c"]=29
  33 c2n["d"]=30
  34 c2n["e"]=31
  35 c2n["f"]=32
  36 c2n["g"]=33
  37 c2n["h"]=34
  38 c2n["i"]=35
  39 c2n["j"]=36
  40 c2n["k"]=37
  41 c2n["l"]=38
  42 c2n["m"]=39
  43 c2n["n"]=40
  44 c2n["o"]=41
  45 c2n["p"]=42
  46 c2n["q"]=43
  47 c2n["r"]=44
  48 c2n["s"]=45
  49 c2n["t"]=46
  50 c2n["u"]=47
  51 c2n["v"]=48
  52 c2n["w"]=49
  53 c2n["x"]=50
  54 c2n["y"]=51
  55 c2n["z"]=52
  56 c2n["0"]=53
  57 c2n["1"]=54
  58 c2n["2"]=55
  59 c2n["3"]=56
  60 c2n["4"]=57
  61 c2n["5"]=58
  62 c2n["6"]=59
  63 c2n["7"]=60
  64 c2n["8"]=61
  65 c2n["9"]=62
  66 c2n["_"]=63
  67 }
  68 /^#/ { next }
  69 /^[ \t]*(error_table|et)[ \t]+[a-zA-Z][a-zA-Z0-9_]+/ {
  70         table_number = 0
  71         table_name = $2
  72         mod_base = 1000000
  73         for(i=1; i<=length(table_name); i++) {
  74             table_number=(table_number*char_shift)+c2n[substr(table_name,i,1)]
  75         }
  76         # We start playing *_high, *low games here because the some
  77         # awk programs do not have the necessary precision (sigh)
  78         tab_base_low = table_number % mod_base
  79         if (tab_base_low < 0) {
  80                 # Work around stupid bug in the ARM libm
  81                 tab_base_low = tab_base_low + mod_base
  82         }
  83         tab_base_high = int(table_number / mod_base)
  84         tab_base_sign = 1;
  85
  86         # figure out: table_number_base=table_number*256
  87         tab_base_low = tab_base_low * 256
  88         tab_base_high = (tab_base_high * 256) + \
  89                         int(tab_base_low / mod_base)
  90         tab_base_low = tab_base_low % mod_base
  91         if (tab_base_low < 0) {
  92                 # Work around stupid bug in the ARM libm
  93                 tab_base_low = tab_base_low + mod_base
  94         }
  95
  96         if (table_number > 128*256*256) {
  97                 # figure out:  table_number_base -= 256*256*256*256
  98                 # sub_high, sub_low is 256*256*256*256
  99                 sub_low = 256*256*256 % mod_base
 100                 sub_high = int(256*256*256 / mod_base)
 101
 102                 sub_low = sub_low * 256
 103                 sub_high = (sub_high * 256) + int(sub_low / mod_base)
 104                 sub_low = sub_low % mod_base
 105
 106                 tab_base_low = sub_low - tab_base_low;
 107                 tab_base_high = sub_high - tab_base_high;
 108                 tab_base_sign = -1;
 109                 if (tab_base_low < 0) {
 110                         tab_base_low = tab_base_low + mod_base
 111                         tab_base_high--
 112                 }
 113         }
 114         curr_low = tab_base_low
 115         curr_high = tab_base_high
 116         curr_sign = tab_base_sign
 117         print "/*" > outfile
 118         print " * " outfile ":" > outfile
 119         print " * This file is automatically generated; please do not edit it." > outfile
 120         print " */" > outfile
 121         print "" > outfile
 122 }
 123
 124 /^[ \t]*(error_code|ec)[ \t]+[A-Z_0-9]+,/ {
 125         tag=substr($2,1,length($2)-1)
 126         if (curr_high == 0) {
 127                 printf "#define %-40s (%dL)\n", tag, \
 128                         curr_sign*curr_low > outfile
 129         } else {
 130                 printf "#define %-40s (%d%06dL)\n", tag, curr_high*curr_sign, \
 131                         curr_low > outfile
 132         }
 133         curr_low += curr_sign;
 134         if (curr_low >= mod_base) {
 135                 curr_low -= mod_base;
 136                 curr_high++
 137         }
 138         if (curr_low < 0) {
 139                 cur_low += mod_base
 140                 cur_high--
 141         }
 142 }
 143
 144 END {
 145         print "extern void initialize_" table_name "_error_table(void);" > outfile
 146         if (tab_base_high == 0) {
 147                 print "#define ERROR_TABLE_BASE_" table_name " (" \
 148                         sprintf("%d", tab_base_sign*tab_base_low) \
 149                         "L)" > outfile
 150         } else {
 151                 print "#define ERROR_TABLE_BASE_" table_name " (" \
 152                         sprintf("%d%06d", tab_base_sign*tab_base_high, \
 153                         tab_base_low) "L)" > outfile
 154         }
 155         print "" > outfile
 156         print "/* for compatibility with older versions... */" > outfile
 157         print "#define init_" table_name "_err_tbl initialize_" table_name "_error_table" > outfile
 158         print "#define " table_name "_err_base ERROR_TABLE_BASE_" table_name > outfile
 159 }