xref: /freebsd/contrib/netbsd-tests/lib/libcurses/director/testlang_conf.l (revision 5f4c09dd85bff675e0ca63c55ea3c517e0fddfcc) 
1 %{
2 /*	$NetBSD: testlang_conf.l,v 1.7 2013/11/21 11:06:04 blymn Exp $ 	*/
3 
4 /*-
5  * Copyright 2009 Brett Lymn <blymn@NetBSD.org>
6  *
7  * All rights reserved.
8  *
9  * This code has been donated to The NetBSD Foundation by the Author.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions and the following disclaimer.
16  * 2. The name of the author may not be used to endorse or promote products
17  *    derived from this software withough specific prior written permission
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  *
30  *
31  */
32 
33 #include <curses.h>
34 #include <ctype.h>
35 #include <stdio.h>
36 #include <stdlib.h>
37 #include <string.h>
38 #include <sys/param.h>
39 #include <err.h>
40 #include "returns.h"
41 #include "testlang_parse.h"
42 
43 #define MAX_INCLUDES 32 /* limit for the number of nested includes */
44 
45 int yylex(void);
46 
47 extern size_t line;
48 extern char *include_path; 	/* from director.c */
49 extern char *cur_file;		/* from director.c */
50 
51 static int include_stack[MAX_INCLUDES];
52 static char *include_files[MAX_INCLUDES];
53 static int include_ptr = 0;
54 
55 static char *
56 dequote(const char *s, size_t *len)
57 {
58 	const unsigned char *p;
59 	char *buf, *q;
60 
61 	*len = 0;
62 	p = (const unsigned char *)s;
63 	while (*p) {
64 		if (*p == '\\' && *(p+1)) {
65 			if (isdigit(*(p+1)) && *(p+2) && isdigit(*(p+2)) &&
66 			    *(p+3) && isdigit(*(p+3)))
67 				p += 3;
68 			else
69 				++p;
70 		}
71 		++(*len);
72 		++p;
73 	}
74 
75 	buf = malloc(*len + 1);
76 	if (buf == NULL)
77 		return NULL;
78 
79 	p = (const unsigned char *)s;
80 	q = buf;
81 	while (*p) {
82 		if (*p == '\\' && *(p+1)) {
83 			++p;
84 			if (isdigit(*p)) {
85 				if (*(p+1) && isdigit(*(p+1)) && *(p+2) &&
86 				    isdigit(*(p+2))) {
87 					*q++ = ((*p - '0') * 8 + (*(p+1) - '0')) * 8 + (*(p+2) - '0');
88 					p += 3;
89 				} else {
90 					*q++ = *p++;
91 				}
92 			} else {
93 				switch (*p) {
94 				case 'e':
95 					/* escape */
96 					*q++ = '\e';
97 					p++;
98 					break;
99 
100 				case 'n':
101 					/* newline */
102 					*q++ = '\n';
103 					p++;
104 					break;
105 
106 				case 'r':
107 					/* carriage return */
108 					*q++ = '\r';
109 					p++;
110 					break;
111 
112 				case 't':
113 					/* tab */
114 					*q++ = '\t';
115 					p++;
116 					break;
117 
118 				case '\\':
119 					/* backslash */
120 					*q++ = '\\';
121 					p++;
122 					break;
123 
124 				default:
125 					*q++ = *p++;
126 				}
127 			}
128 		} else
129 			*q++ = *p++;
130 	}
131 	*q++ = '\0';
132 
133 	return buf;
134 }
135 %}
136 
137 HEX		0[xX][0-9a-zA-Z]+
138 STRING		[0-9a-z!#-&(-^ \t%._\\]+
139 numeric		[-0-9]+
140 PCHAR           (\\.|[^ \t\n])
141 ASSIGN		[aA][sS][sS][iI][gG][nN]
142 CALL2		[cC][aA][lL][lL]2
143 CALL3		[cC][aA][lL][lL]3
144 CALL4		[cC][aA][lL][lL]4
145 CALL		[cC][aA][lL][lL]
146 CHECK		[cC][hH][eE][cC][kK]
147 DELAY		[dD][eE][lL][aA][yY]
148 INPUT		[iI][nN][pP][uU][tT]
149 NOINPUT		[nN][oO][iI][nN][pP][uU][tT]
150 OK_RET		[oO][kK]
151 ERR_RET		[eE][rR][rR]
152 COMPARE		[cC][oO][mM][pP][aA][rR][eE]
153 COMPAREND	[cC][oO][mM][pP][aA][rR][eE][Nn][Dd]
154 FILENAME	[A-Za-z0-9.][A-Za-z0-9./_-]+
155 VARNAME		[A-Za-z][A-Za-z0-9_-]+
156 NULL_RET	NULL
157 NON_NULL	NON_NULL
158 BYTE		BYTE
159 OR		\|
160 LHB		\(
161 RHB		\)
162 
163 %x incl
164 %option noinput nounput
165 
166 %%
167 
168 include		BEGIN(incl);
169 
170 <incl>[ \t]*      /* eat the whitespace */
171 <incl>[^ \t\n]+   { /* got the include file name */
172 		char inc_file[MAXPATHLEN];
173 
174 		if (include_ptr > MAX_INCLUDES) {
175 			fprintf(stderr,
176 				"Maximum number of nested includes exceeded "
177 				"at line %zu of file %s\n", line, cur_file);
178 				exit(2);
179 		}
180 
181 		if (yytext[0] != '/') {
182 			if (strlcpy(inc_file, include_path, sizeof(inc_file))
183 			    >= sizeof(inc_file))
184 				err(2, "CHECK_PATH too long");
185 			if ((include_path[strlen(include_path) - 1] != '/') &&
186 			    ((strlcat(inc_file, "/", sizeof(inc_file))
187 			    >= sizeof(inc_file))))
188 				err(2, "Could not append / to include file path");
189 		} else {
190 			inc_file[0] = '\0';
191 		}
192 
193 		if (strlcat(inc_file, yytext, sizeof(inc_file))
194 		    >= sizeof(inc_file))
195 			err(2, "Path to include file path overflowed");
196 
197 		yyin = fopen(inc_file, "r" );
198 
199 		if (!yyin)
200 			err(1, "Error opening %s", inc_file);
201 
202 		yypush_buffer_state(yy_create_buffer(yyin, YY_BUF_SIZE));
203 
204 		include_stack[include_ptr] = line;
205 		include_files[include_ptr++] = cur_file;
206 		cur_file = strdup(inc_file);
207 		if (cur_file == NULL)
208 			err(2, "Cannot allocate new include file string");
209 		line = 0;
210 		BEGIN(INITIAL);
211 	}
212 
213 <<EOF>>	{
214 		yypop_buffer_state();
215 
216 		if ( !YY_CURRENT_BUFFER )
217 		{
218 			yyterminate();
219 		}
220 
221 		if (--include_ptr < 0)
222 			err(2, "Include stack underflow");
223 
224 		free(cur_file);
225 		cur_file = include_files[include_ptr];
226 		line = include_stack[include_ptr];
227 	}
228 
229 {ASSIGN}	{
230 			return ASSIGN;
231 		}
232 
233 {CALL2}		{
234 			return CALL2;
235 		}
236 
237 {CALL3}		{
238 			return CALL3;
239 		}
240 
241 {CALL4}		{
242 			return CALL4;
243 		}
244 
245 {CALL}		{
246 			return CALL;
247 		}
248 
249 {CHECK}		{
250 			return CHECK;
251 		}
252 
253 {DELAY}		{
254 			return DELAY;
255 		}
256 
257 {INPUT}		{
258 			return INPUT;
259 		}
260 
261 {NOINPUT}		{
262 			return NOINPUT;
263 		}
264 
265 {COMPARE}	{
266 			return COMPARE;
267 		}
268 
269 {COMPAREND}	{
270 			return COMPAREND;
271 		}
272 
273 {NON_NULL}	{
274 			return NON_NULL;
275 		}
276 
277 {NULL_RET}		{
278 			return NULL_RET;
279 		}
280 
281 {OK_RET}		{
282 			return OK_RET;
283 		}
284 
285 {ERR_RET}		{
286 			return ERR_RET;
287 		}
288 
289 {OR}		{
290 			return OR;
291 		}
292 
293 {LHB}		{
294 			return LHB;
295 		}
296 
297 {RHB}		{
298 			return RHB;
299 		}
300 
301 {HEX}		{
302 			/* Hex value, convert to decimal and return numeric */
303 			unsigned long val;
304 
305 			if (sscanf(yytext, "%lx", &val) != 1)
306 				err(1, "Bad hex conversion");
307 
308 			asprintf(&yylval.string, "%ld", val);
309 			return numeric;
310 		}
311 
312 
313 {numeric}		{
314 			if ((yylval.string = strdup(yytext)) == NULL)
315 				err(1, "Cannot allocate numeric string");
316 			return numeric;
317 }
318 
319 {VARNAME}	{
320 			if ((yylval.string = strdup(yytext)) == NULL)
321 				err(1, "Cannot allocate string for varname");
322 			return VARNAME;
323 		}
324 
325 {FILENAME}	{
326 			size_t len;
327 
328 			if ((yylval.string = dequote(yytext, &len)) == NULL)
329 				err(1, "Cannot allocate filename string");
330 			return FILENAME;
331 		}
332 
333 	/* path */
334 \/{PCHAR}+	{
335 			size_t len;
336 			if ((yylval.string = dequote(yytext, &len)) == NULL)
337 				err(1, "Cannot allocate string");
338 			return PATH;
339 		}
340 
341 \'{STRING}\' 	{
342 			char *p;
343 			size_t len;
344 
345 			if ((yylval.retval = malloc(sizeof(returns_t))) == NULL)
346 				err(1, "Cannot allocate return struct");
347 			p = yytext;
348 			p++; /* skip the leading ' */
349 			if ((yylval.retval->return_value = dequote(p, &len))
350 			     == NULL)
351 				err(1, "Cannot allocate string");
352 
353 			yylval.retval->return_type = ret_byte;
354 			/* trim trailing ' */
355 			yylval.retval->return_len = len - 1;
356 			return BYTE;
357 		}
358 
359 \`{STRING}\` 	{
360 			char *p, *str;
361 			size_t len, chlen;
362 			size_t i;
363 			chtype *rv;
364 
365 			if ((yylval.retval = malloc(sizeof(returns_t))) == NULL)
366 				err(1, "Cannot allocate return struct");
367 			p = yytext;
368 			p++; /* skip the leading ' */
369 			if ((str = dequote(p, &len)) == NULL)
370 				err(1, "Cannot allocate string");
371 			len--; /* trim trailing ` */
372 			if ((len % 2) != 0)
373 				len--;
374 
375 			chlen = ((len / 2) + 1) * sizeof(chtype);
376 			if ((yylval.retval->return_value = malloc(chlen))
377 			    == NULL)
378 				err(1, "Cannot allocate chtype array");
379 
380 			rv = yylval.retval->return_value;
381 			for (i = 0; i < len; i += 2)
382 				*rv++ = (str[i] << 8) | str[i+1];
383 			*rv = __NORMAL | '\0'; /* terminates chtype array */
384 			yylval.retval->return_type = ret_byte;
385 			yylval.retval->return_len = chlen;
386 			return BYTE;
387 		}
388 
389 \"{STRING}\" 	{
390 			char *p;
391 			size_t len;
392 
393 			p = yytext;
394 			p++; /* skip the leading " */
395 			if ((yylval.string = dequote(p, &len)) == NULL)
396 				err(1, "Cannot allocate string");
397 
398 			/* remove trailing " */
399 			yylval.string[len - 1] = '\0';
400 			return STRING;
401 		}
402 
403 \${VARNAME}	{
404 			char *p;
405 
406 			p = yytext;
407 			p++; /* skip $ before var name */
408 			if ((yylval.string = strdup(p)) == NULL)
409 				err(1, "Cannot allocate string for varname");
410 			return VARIABLE;
411 		}
412 
413 	/* comments, white-outs */
414 [ \t\r]		|
415 #.*		;
416 ^#.*\n		|
417 #.*\n		|
418 \\\n		|
419 ^\n		{
420 line++; }
421 
422 	/* eol on a line with data. need to process, return eol */
423 \n		{
424 			line++;
425 			return EOL;
426 		}
427 
428 .		{
429 		}
430 
431 %%
432 
433 int
434 yywrap(void)
435 {
436 	return 1;
437 }
438