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testlang_conf.l revision 1.6.8.1 
      1 %{
      2 /*	$NetBSD: testlang_conf.l,v 1.6.8.1 2014/08/20 00:04:50 tls Exp $ 	*/
      3 
      4 /*-
      5  * Copyright 2009 Brett Lymn <blymn (at) 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