tests/lib/libcurses/director/testlang_conf.l

   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 }