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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 }