sys/teken/gensequences

   1 #!/usr/bin/awk -f
   2
   3 #-
   4 # Copyright (c) 2008-2009 Ed Schouten <ed@FreeBSD.org>
   5 # All rights reserved.
   6 #
   7 # Redistribution and use in source and binary forms, with or without
   8 # modification, are permitted provided that the following conditions
   9 # are met:
  10 # 1. Redistributions of source code must retain the above copyright
  11 #    notice, this list of conditions and the following disclaimer.
  12 # 2. Redistributions in binary form must reproduce the above copyright
  13 #    notice, this list of conditions and the following disclaimer in the
  14 #    documentation and/or other materials provided with the distribution.
  15 #
  16 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19 # ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26 # SUCH DAMAGE.
  27 #
  28 # $FreeBSD$
  29
  30 function die(msg) {
  31         print msg;
  32         exit 1;
  33 }
  34
  35 function cchar(str) {
  36         if (str == "^[")
  37                 return "\\x1B";
  38
  39         return str;
  40 }
  41
  42 BEGIN {
  43 FS = "\t+"
  44
  45 while (getline > 0) {
  46         if (NF == 0 || $1 ~ /^#/)
  47                 continue;
  48
  49         if (NF != 3 && NF != 4)
  50                 die("Invalid line layout: " NF " columns");
  51
  52         split($3, sequence, " +");
  53         nsequences = 0;
  54         for (s in sequence)
  55                 nsequences++;
  56
  57         prefix = "";
  58         l_prefix_name[""] = "teken_state_init";
  59         for (i = 1; i < nsequences; i++) {
  60                 n = prefix sequence[i];
  61                 l_prefix_parent[n] = prefix;
  62                 l_prefix_suffix[n] = sequence[i];
  63                 if (!l_prefix_name[n])
  64                         l_prefix_name[n] = "teken_state_" ++npr;
  65                 prefix = n;
  66         }
  67
  68         suffix = sequence[nsequences];
  69         cmd = prefix suffix;
  70
  71         # Fill lists
  72         if (l_cmd_name[cmd] != "")
  73                 die(cmd " already exists");
  74         l_cmd_prefix[cmd] = prefix;
  75         l_cmd_suffix[cmd] = suffix;
  76         l_cmd_args[cmd] = $4;
  77         l_cmd_abbr[cmd] = $1;
  78         l_cmd_name[cmd] = $2;
  79         l_cmd_c_name[cmd] = "teken_subr_" tolower($2);
  80         gsub(" ", "_", l_cmd_c_name[cmd]);
  81
  82         if ($4 != "")
  83                 l_prefix_numbercmds[prefix]++;
  84 }
  85
  86 print "/* Generated file. Do not edit. */";
  87 print "";
  88
  89 for (p in l_prefix_name) {
  90         if (l_prefix_name[p] != "teken_state_init")
  91                 print "static teken_state_t     " l_prefix_name[p] ";";
  92 }
  93
  94 for (p in l_prefix_name) {
  95         print "";
  96         print "/* '" p "' */";
  97         print "static void";
  98         print l_prefix_name[p] "(teken_t *t, teken_char_t c)";
  99         print "{";
 100
 101         if (l_prefix_numbercmds[p] > 0) {
 102                 print "";
 103                 print "\tif (teken_state_numbers(t, c))";
 104                 print "\t\treturn;";
 105         }
 106
 107         print "";
 108         print "\tswitch (c) {";
 109         for (c in l_cmd_prefix) {
 110                 if (l_cmd_prefix[c] != p)
 111                         continue;
 112
 113                 print "\tcase '" cchar(l_cmd_suffix[c]) "': /* " l_cmd_abbr[c] ": " l_cmd_name[c] " */";
 114
 115                 if (l_cmd_args[c] == "v") {
 116                         print "\t\t" l_cmd_c_name[c] "(t, t->t_curnum, t->t_nums);";
 117                 } else {
 118                         printf "\t\t%s(t", l_cmd_c_name[c];
 119                         split(l_cmd_args[c], args, " ");
 120                         for (a = 1; args[a] != ""; a++) {
 121                                 if (args[a] == "n")
 122                                         printf ", (t->t_curnum < %d || t->t_nums[%d] == 0) ? 1 : t->t_nums[%d]", a, (a - 1), (a - 1);
 123                                 else if (args[a] == "r")
 124                                         printf ", t->t_curnum < %d ? 0 : t->t_nums[%d]", a, (a - 1);
 125                                 else
 126                                         die("Invalid argument type: " args[a]);
 127                         }
 128                         print ");";
 129                 }
 130                 print "\t\tbreak;";
 131         }
 132         for (pc in l_prefix_parent) {
 133                 if (l_prefix_parent[pc] != p)
 134                         continue;
 135                 print "\tcase '" cchar(l_prefix_suffix[pc]) "':";
 136                 print "\t\tteken_state_switch(t, " l_prefix_name[pc] ");";
 137                 print "\t\treturn;";
 138         }
 139
 140         print "\tdefault:";
 141         if (l_prefix_name[p] == "teken_state_init") {
 142                 print "\t\tteken_subr_regular_character(t, c);";
 143         } else {
 144                 print "\t\tteken_printf(\"Unsupported sequence in " l_prefix_name[p] ": %u\\n\", (unsigned int)c);";
 145         }
 146         print "\t\tbreak;";
 147
 148         print "\t}";
 149
 150         if (l_prefix_name[p] != "teken_state_init") {
 151                 print "";
 152                 print "\tteken_state_switch(t, teken_state_init);";
 153         }
 154         print "}";
 155 }
 156
 157 }