1/* Copyright (c) 2013, Vsevolod Stakhov
2 * All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *       * Redistributions of source code must retain the above copyright
7 *         notice, this list of conditions and the following disclaimer.
8 *       * Redistributions in binary form must reproduce the above copyright
9 *         notice, this list of conditions and the following disclaimer in the
10 *         documentation and/or other materials provided with the distribution.
11 *
12 * THIS SOFTWARE IS PROVIDED ''AS IS'' AND ANY
13 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
14 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
15 * DISCLAIMED. IN NO EVENT SHALL AUTHOR BE LIABLE FOR ANY
16 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
17 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
18 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
19 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
20 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
21 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
22 */
23
24/**
25 * @file this utility generates character table for ucl
26 */
27
28#include <stdio.h>
29#include <ctype.h>
30#include <stdbool.h>
31
32static inline int
33print_flag (const char *flag, bool *need_or, char *val)
34{
35	int res;
36	res = sprintf (val, "%s%s", *need_or ? "|" : "", flag);
37
38	*need_or |= true;
39
40	return res;
41}
42
43int
44main (int argc, char **argv)
45{
46	int i, col, r;
47	const char *name = "ucl_chartable";
48	bool need_or;
49	char valbuf[2048];
50
51	col = 0;
52
53	if (argc > 1) {
54		name = argv[1];
55	}
56
57	printf ("static const unsigned int %s[255] = {\n", name);
58
59	for (i = 0; i < 255; i ++) {
60		need_or = false;
61		r = 0;
62		/* UCL_CHARACTER_VALUE_END */
63
64		if (i == ' ' || i == '\t') {
65			r += print_flag ("UCL_CHARACTER_WHITESPACE", &need_or, valbuf + r);
66		}
67		if (isspace (i)) {
68			r += print_flag ("UCL_CHARACTER_WHITESPACE_UNSAFE", &need_or, valbuf + r);
69		}
70		if (isalnum (i) || i >= 0x80 || i == '/' || i == '_') {
71			r += print_flag ("UCL_CHARACTER_KEY_START", &need_or, valbuf + r);
72		}
73		if (isalnum (i) || i == '-' || i == '_' || i == '/' || i == '.' || i >= 0x80) {
74			r += print_flag ("UCL_CHARACTER_KEY", &need_or, valbuf + r);
75		}
76		if (i == 0 || i == '\r' || i == '\n' || i == ']' || i == '}' || i == ';' || i == ',' || i == '#') {
77			r += print_flag ("UCL_CHARACTER_VALUE_END", &need_or, valbuf + r);
78		}
79		else {
80			if (isprint (i) || i >= 0x80) {
81				r += print_flag ("UCL_CHARACTER_VALUE_STR", &need_or, valbuf + r);
82			}
83			if (isdigit (i) || i == '-') {
84				r += print_flag ("UCL_CHARACTER_VALUE_DIGIT_START", &need_or, valbuf + r);
85			}
86			if (isalnum (i) || i == '.' || i == '-' || i == '+') {
87				r += print_flag ("UCL_CHARACTER_VALUE_DIGIT", &need_or, valbuf + r);
88			}
89		}
90		if (i == '"' || i == '\\' || i == '/' || i == 'b' ||
91			i == 'f' || i == 'n' || i == 'r' || i == 't' || i == 'u') {
92			r += print_flag ("UCL_CHARACTER_ESCAPE", &need_or, valbuf + r);
93		}
94		if (i == ' ' || i == '\t' || i == ':' || i == '=') {
95			r += print_flag ("UCL_CHARACTER_KEY_SEP", &need_or, valbuf + r);
96		}
97		if (i == '\n' || i == '\r' || i == '\\' || i == '\b' || i == '\t' ||
98				i == '"' || i == '\f') {
99			r += print_flag ("UCL_CHARACTER_JSON_UNSAFE", &need_or, valbuf + r);
100		}
101		if (i == '\n' || i == '\r' || i == '\\' || i == '\b' || i == '\t' ||
102				i == '"' || i == '\f' || i == '=' || i == ':' || i == '{' || i == '[' || i == ' ') {
103			r += print_flag ("UCL_CHARACTER_UCL_UNSAFE", &need_or, valbuf + r);
104		}
105
106		if (!need_or) {
107			r += print_flag ("UCL_CHARACTER_DENIED", &need_or, valbuf + r);
108		}
109
110		if (isprint (i)) {
111			r += sprintf (valbuf + r, " /* %c */", i);
112		}
113		if (i != 254) {
114			r += sprintf (valbuf + r, ", ");
115		}
116		col += r;
117		if (col > 80) {
118			printf ("\n%s", valbuf);
119			col = r;
120		}
121		else {
122			printf ("%s", valbuf);
123		}
124	}
125	printf ("\n}\n");
126
127	return 0;
128}
129