gensequences revision 223574 
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: head/sys/teken/gensequences 223574 2011-06-26 18:25:10Z ed $
29
30function die(msg) {
31	print msg;
32	exit 1;
33}
34
35function cchar(str) {
36	if (str == "^[")
37		return "\\x1B";
38
39	return str;
40}
41
42BEGIN {
43FS = "\t+"
44
45while (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
86print "/* Generated file. Do not edit. */";
87print "";
88
89for (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
94for (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}
158