release/src/router/libncurses/ncurses/tinfo/captoinfo.c

   1 /****************************************************************************
   2  * Copyright (c) 1998-2009,2010 Free Software Foundation, Inc.              *
   3  *                                                                          *
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   5  * copy of this software and associated documentation files (the            *
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  11  *                                                                          *
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  16  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
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  28
  29 /****************************************************************************
  30  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
  31  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
  32  *     and: Thomas E. Dickey                        1996-on                 *
  33  ****************************************************************************/
  34
  35 /*
  36  *      captoinfo.c --- conversion between termcap and terminfo formats
  37  *
  38  *      The captoinfo() code was swiped from Ross Ridge's mytinfo package,
  39  *      adapted to fit ncurses by Eric S. Raymond <esr@snark.thyrsus.com>.
  40  *
  41  *      There is just one entry point:
  42  *
  43  *      char *_nc_captoinfo(n, s, parameterized)
  44  *
  45  *      Convert value s for termcap string capability named n into terminfo
  46  *      format.
  47  *
  48  *      This code recognizes all the standard 4.4BSD %-escapes:
  49  *
  50  *      %%       output `%'
  51  *      %d       output value as in printf %d
  52  *      %2       output value as in printf %2d
  53  *      %3       output value as in printf %3d
  54  *      %.       output value as in printf %c
  55  *      %+x      add x to value, then do %.
  56  *      %>xy     if value > x then add y, no output
  57  *      %r       reverse order of two parameters, no output
  58  *      %i       increment by one, no output
  59  *      %n       exclusive-or all parameters with 0140 (Datamedia 2500)
  60  *      %B       BCD (16*(value/10)) + (value%10), no output
  61  *      %D       Reverse coding (value - 2*(value%16)), no output (Delta Data).
  62  *
  63  *      Also, %02 and %03 are accepted as synonyms for %2 and %3.
  64  *
  65  *      Besides all the standard termcap escapes, this translator understands
  66  *      the following extended escapes:
  67  *
  68  *      used by GNU Emacs termcap libraries
  69  *              %a[+*-/=][cp]x  GNU arithmetic.
  70  *              %m              xor the first two parameters by 0177
  71  *              %b              backup to previous parameter
  72  *              %f              skip this parameter
  73  *
  74  *      used by the University of Waterloo (MFCF) termcap libraries
  75  *              %-x      subtract parameter FROM char x and output it as a char
  76  *              %ax      add the character x to parameter
  77  *
  78  *      If #define WATERLOO is on, also enable these translations:
  79  *
  80  *              %sx      subtract parameter FROM the character x
  81  *
  82  *      By default, this Waterloo translations are not compiled in, because
  83  *      the Waterloo %s conflicts with the way terminfo uses %s in strings for
  84  *      function programming.
  85  *
  86  *      Note the two definitions of %a: the GNU definition is translated if the
  87  *      characters after the 'a' are valid for it, otherwise the UW definition
  88  *      is translated.
  89  */
  90
  91 #include <curses.priv.h>
  92
  93 #include <ctype.h>
  94 #include <tic.h>
  95
  96 MODULE_ID("$Id: captoinfo.c,v 1.58 2010/12/04 20:08:19 tom Exp $")
  97
  98 #define MAX_PUSHED      16      /* max # args we can push onto the stack */
  99
 100 static int stack[MAX_PUSHED];   /* the stack */
 101 static int stackptr;            /* the next empty place on the stack */
 102 static int onstack;             /* the top of stack */
 103 static int seenm;               /* seen a %m */
 104 static int seenn;               /* seen a %n */
 105 static int seenr;               /* seen a %r */
 106 static int param;               /* current parameter */
 107 static char *dp;                /* pointer to end of the converted string */
 108
 109 static char *my_string;
 110 static size_t my_length;
 111
 112 static char *
 113 init_string(void)
 114 /* initialize 'my_string', 'my_length' */
 115 {
 116     if (my_string == 0)
 117         my_string = typeMalloc(char, my_length = 256);
 118     if (my_string == 0)
 119         _nc_err_abort(MSG_NO_MEMORY);
 120
 121     *my_string = '\0';
 122     return my_string;
 123 }
 124
 125 static char *
 126 save_string(char *d, const char *const s)
 127 {
 128     size_t have = (size_t) (d - my_string);
 129     size_t need = have + strlen(s) + 2;
 130     if (need > my_length) {
 131         my_string = (char *) _nc_doalloc(my_string, my_length = (need + need));
 132         if (my_string == 0)
 133             _nc_err_abort(MSG_NO_MEMORY);
 134         d = my_string + have;
 135     }
 136     (void) strcpy(d, s);
 137     return d + strlen(d);
 138 }
 139
 140 static NCURSES_INLINE char *
 141 save_char(char *s, int c)
 142 {
 143     static char temp[2];
 144     temp[0] = (char) c;
 145     return save_string(s, temp);
 146 }
 147
 148 static void
 149 push(void)
 150 /* push onstack on to the stack */
 151 {
 152     if (stackptr >= MAX_PUSHED)
 153         _nc_warning("string too complex to convert");
 154     else
 155         stack[stackptr++] = onstack;
 156 }
 157
 158 static void
 159 pop(void)
 160 /* pop the top of the stack into onstack */
 161 {
 162     if (stackptr == 0) {
 163         if (onstack == 0)
 164             _nc_warning("I'm confused");
 165         else
 166             onstack = 0;
 167     } else
 168         onstack = stack[--stackptr];
 169     param++;
 170 }
 171
 172 static int
 173 cvtchar(register const char *sp)
 174 /* convert a character to a terminfo push */
 175 {
 176     unsigned char c = 0;
 177     int len;
 178
 179     switch (*sp) {
 180     case '\\':
 181         switch (*++sp) {
 182         case '\'':
 183         case '$':
 184         case '\\':
 185         case '%':
 186             c = (unsigned char) (*sp);
 187             len = 2;
 188             break;
 189         case '\0':
 190             c = '\\';
 191             len = 1;
 192             break;
 193         case '0':
 194         case '1':
 195         case '2':
 196         case '3':
 197             len = 1;
 198             while (isdigit(UChar(*sp))) {
 199                 c = (unsigned char) (8 * c + (*sp++ - '0'));
 200                 len++;
 201             }
 202             break;
 203         default:
 204             c = (unsigned char) (*sp);
 205             len = 2;
 206             break;
 207         }
 208         break;
 209     case '^':
 210         c = (unsigned char) (*++sp & 0x1f);
 211         len = 2;
 212         break;
 213     default:
 214         c = (unsigned char) (*sp);
 215         len = 1;
 216     }
 217     if (isgraph(c) && c != ',' && c != '\'' && c != '\\' && c != ':') {
 218         dp = save_string(dp, "%\'");
 219         dp = save_char(dp, c);
 220         dp = save_char(dp, '\'');
 221     } else {
 222         dp = save_string(dp, "%{");
 223         if (c > 99)
 224             dp = save_char(dp, c / 100 + '0');
 225         if (c > 9)
 226             dp = save_char(dp, ((int) (c / 10)) % 10 + '0');
 227         dp = save_char(dp, c % 10 + '0');
 228         dp = save_char(dp, '}');
 229     }
 230     return len;
 231 }
 232
 233 static void
 234 getparm(int parm, int n)
 235 /* push n copies of param on the terminfo stack if not already there */
 236 {
 237     if (seenr) {
 238         if (parm == 1)
 239             parm = 2;
 240         else if (parm == 2)
 241             parm = 1;
 242     }
 243     if (onstack == parm) {
 244         if (n > 1) {
 245             _nc_warning("string may not be optimal");
 246             dp = save_string(dp, "%Pa");
 247             while (n--) {
 248                 dp = save_string(dp, "%ga");
 249             }
 250         }
 251         return;
 252     }
 253     if (onstack != 0)
 254         push();
 255
 256     onstack = parm;
 257
 258     while (n--) {
 259         dp = save_string(dp, "%p");
 260         dp = save_char(dp, '0' + parm);
 261     }
 262
 263     if (seenn && parm < 3) {
 264         dp = save_string(dp, "%{96}%^");
 265     }
 266
 267     if (seenm && parm < 3) {
 268         dp = save_string(dp, "%{127}%^");
 269     }
 270 }
 271
 272 /*
 273  * Convert a termcap string to terminfo format.
 274  * 'cap' is the relevant terminfo capability index.
 275  * 's' is the string value of the capability.
 276  * 'parameterized' tells what type of translations to do:
 277  *      % translations if 1
 278  *      pad translations if >=0
 279  */
 280 NCURSES_EXPORT(char *)
 281 _nc_captoinfo(const char *cap, const char *s, int const parameterized)
 282 {
 283     const char *capstart;
 284
 285     stackptr = 0;
 286     onstack = 0;
 287     seenm = 0;
 288     seenn = 0;
 289     seenr = 0;
 290     param = 1;
 291
 292     dp = init_string();
 293
 294     /* skip the initial padding (if we haven't been told not to) */
 295     capstart = 0;
 296     if (s == 0)
 297         s = "";
 298     if (parameterized >= 0 && isdigit(UChar(*s)))
 299         for (capstart = s;; s++)
 300             if (!(isdigit(UChar(*s)) || *s == '*' || *s == '.'))
 301                 break;
 302
 303     while (*s != '\0') {
 304         switch (*s) {
 305         case '%':
 306             s++;
 307             if (parameterized < 1) {
 308                 dp = save_char(dp, '%');
 309                 break;
 310             }
 311             switch (*s++) {
 312             case '%':
 313                 dp = save_char(dp, '%');
 314                 break;
 315             case 'r':
 316                 if (seenr++ == 1) {
 317                     _nc_warning("saw %%r twice in %s", cap);
 318                 }
 319                 break;
 320             case 'm':
 321                 if (seenm++ == 1) {
 322                     _nc_warning("saw %%m twice in %s", cap);
 323                 }
 324                 break;
 325             case 'n':
 326                 if (seenn++ == 1) {
 327                     _nc_warning("saw %%n twice in %s", cap);
 328                 }
 329                 break;
 330             case 'i':
 331                 dp = save_string(dp, "%i");
 332                 break;
 333             case '6':
 334             case 'B':
 335                 getparm(param, 1);
 336                 dp = save_string(dp, "%{10}%/%{16}%*");
 337                 getparm(param, 1);
 338                 dp = save_string(dp, "%{10}%m%+");
 339                 break;
 340             case '8':
 341             case 'D':
 342                 getparm(param, 2);
 343                 dp = save_string(dp, "%{2}%*%-");
 344                 break;
 345             case '>':
 346                 getparm(param, 2);
 347                 /* %?%{x}%>%t%{y}%+%; */
 348                 dp = save_string(dp, "%?");
 349                 s += cvtchar(s);
 350                 dp = save_string(dp, "%>%t");
 351                 s += cvtchar(s);
 352                 dp = save_string(dp, "%+%;");
 353                 break;
 354             case 'a':
 355                 if ((*s == '=' || *s == '+' || *s == '-'
 356                      || *s == '*' || *s == '/')
 357                     && (s[1] == 'p' || s[1] == 'c')
 358                     && s[2] != '\0') {
 359                     int l;
 360                     l = 2;
 361                     if (*s != '=')
 362                         getparm(param, 1);
 363                     if (s[1] == 'p') {
 364                         getparm(param + s[2] - '@', 1);
 365                         if (param != onstack) {
 366                             pop();
 367                             param--;
 368                         }
 369                         l++;
 370                     } else
 371                         l += cvtchar(s + 2);
 372                     switch (*s) {
 373                     case '+':
 374                         dp = save_string(dp, "%+");
 375                         break;
 376                     case '-':
 377                         dp = save_string(dp, "%-");
 378                         break;
 379                     case '*':
 380                         dp = save_string(dp, "%*");
 381                         break;
 382                     case '/':
 383                         dp = save_string(dp, "%/");
 384                         break;
 385                     case '=':
 386                         if (seenr) {
 387                             if (param == 1)
 388                                 onstack = 2;
 389                             else if (param == 2)
 390                                 onstack = 1;
 391                             else
 392                                 onstack = param;
 393                         } else
 394                             onstack = param;
 395                         break;
 396                     }
 397                     s += l;
 398                     break;
 399                 }
 400                 getparm(param, 1);
 401                 s += cvtchar(s);
 402                 dp = save_string(dp, "%+");
 403                 break;
 404             case '+':
 405                 getparm(param, 1);
 406                 s += cvtchar(s);
 407                 dp = save_string(dp, "%+%c");
 408                 pop();
 409                 break;
 410             case 's':
 411 #ifdef WATERLOO
 412                 s += cvtchar(s);
 413                 getparm(param, 1);
 414                 dp = save_string(dp, "%-");
 415 #else
 416                 getparm(param, 1);
 417                 dp = save_string(dp, "%s");
 418                 pop();
 419 #endif /* WATERLOO */
 420                 break;
 421             case '-':
 422                 s += cvtchar(s);
 423                 getparm(param, 1);
 424                 dp = save_string(dp, "%-%c");
 425                 pop();
 426                 break;
 427             case '.':
 428                 getparm(param, 1);
 429                 dp = save_string(dp, "%c");
 430                 pop();
 431                 break;
 432             case '0':           /* not clear any of the historical termcaps did this */
 433                 if (*s == '3')
 434                     goto see03;
 435                 else if (*s != '2')
 436                     goto invalid;
 437                 /* FALLTHRU */
 438             case '2':
 439                 getparm(param, 1);
 440                 dp = save_string(dp, "%2d");
 441                 pop();
 442                 break;
 443             case '3':
 444               see03:
 445                 getparm(param, 1);
 446                 dp = save_string(dp, "%3d");
 447                 pop();
 448                 break;
 449             case 'd':
 450                 getparm(param, 1);
 451                 dp = save_string(dp, "%d");
 452                 pop();
 453                 break;
 454             case 'f':
 455                 param++;
 456                 break;
 457             case 'b':
 458                 param--;
 459                 break;
 460             case '\\':
 461                 dp = save_string(dp, "%\\");
 462                 break;
 463             default:
 464               invalid:
 465                 dp = save_char(dp, '%');
 466                 s--;
 467                 _nc_warning("unknown %% code %s (%#x) in %s",
 468                             unctrl((chtype) *s), UChar(*s), cap);
 469                 break;
 470             }
 471             break;
 472 #ifdef REVISIBILIZE
 473         case '\\':
 474             dp = save_char(dp, *s++);
 475             dp = save_char(dp, *s++);
 476             break;
 477         case '\n':
 478             dp = save_string(dp, "\\n");
 479             s++;
 480             break;
 481         case '\t':
 482             dp = save_string(dp, "\\t");
 483             s++;
 484             break;
 485         case '\r':
 486             dp = save_string(dp, "\\r");
 487             s++;
 488             break;
 489         case '\200':
 490             dp = save_string(dp, "\\0");
 491             s++;
 492             break;
 493         case '\f':
 494             dp = save_string(dp, "\\f");
 495             s++;
 496             break;
 497         case '\b':
 498             dp = save_string(dp, "\\b");
 499             s++;
 500             break;
 501         case ' ':
 502             dp = save_string(dp, "\\s");
 503             s++;
 504             break;
 505         case '^':
 506             dp = save_string(dp, "\\^");
 507             s++;
 508             break;
 509         case ':':
 510             dp = save_string(dp, "\\:");
 511             s++;
 512             break;
 513         case ',':
 514             dp = save_string(dp, "\\,");
 515             s++;
 516             break;
 517         default:
 518             if (*s == '\033') {
 519                 dp = save_string(dp, "\\E");
 520                 s++;
 521             } else if (*s > 0 && *s < 32) {
 522                 dp = save_char(dp, '^');
 523                 dp = save_char(dp, *s + '@');
 524                 s++;
 525             } else if (*s <= 0 || *s >= 127) {
 526                 dp = save_char(dp, '\\');
 527                 dp = save_char(dp, ((*s & 0300) >> 6) + '0');
 528                 dp = save_char(dp, ((*s & 0070) >> 3) + '0');
 529                 dp = save_char(dp, (*s & 0007) + '0');
 530                 s++;
 531             } else
 532                 dp = save_char(dp, *s++);
 533             break;
 534 #else
 535         default:
 536             dp = save_char(dp, *s++);
 537             break;
 538 #endif
 539         }
 540     }
 541
 542     /*
 543      * Now, if we stripped off some leading padding, add it at the end
 544      * of the string as mandatory padding.
 545      */
 546     if (capstart) {
 547         dp = save_string(dp, "$<");
 548         for (s = capstart;; s++)
 549             if (isdigit(UChar(*s)) || *s == '*' || *s == '.')
 550                 dp = save_char(dp, *s);
 551             else
 552                 break;
 553         dp = save_string(dp, "/>");
 554     }
 555
 556     (void) save_char(dp, '\0');
 557     return (my_string);
 558 }
 559
 560 /*
 561  * Check for an expression that corresponds to "%B" (BCD):
 562  *      (parameter / 10) * 16 + (parameter % 10)
 563  */
 564 static int
 565 bcd_expression(const char *str)
 566 {
 567     /* leave this non-const for HPUX */
 568     static char fmt[] = "%%p%c%%{10}%%/%%{16}%%*%%p%c%%{10}%%m%%+";
 569     int len = 0;
 570     char ch1, ch2;
 571
 572     if (sscanf(str, fmt, &ch1, &ch2) == 2
 573         && isdigit(UChar(ch1))
 574         && isdigit(UChar(ch2))
 575         && (ch1 == ch2)) {
 576         len = 28;
 577 #ifndef NDEBUG
 578         {
 579             char buffer[80];
 580             int tst;
 581             sprintf(buffer, fmt, ch1, ch2);
 582             tst = strlen(buffer) - 1;
 583             assert(len == tst);
 584         }
 585 #endif
 586     }
 587     return len;
 588 }
 589
 590 static char *
 591 save_tc_char(char *bufptr, int c1)
 592 {
 593     char temp[80];
 594
 595     if (is7bits(c1) && isprint(c1)) {
 596         if (c1 == ':' || c1 == '\\')
 597             bufptr = save_char(bufptr, '\\');
 598         bufptr = save_char(bufptr, c1);
 599     } else {
 600         if (c1 == (c1 & 0x1f))  /* iscntrl() returns T on 255 */
 601             (void) strcpy(temp, unctrl((chtype) c1));
 602         else
 603             (void) sprintf(temp, "\\%03o", c1);
 604         bufptr = save_string(bufptr, temp);
 605     }
 606     return bufptr;
 607 }
 608
 609 static char *
 610 save_tc_inequality(char *bufptr, int c1, int c2)
 611 {
 612     bufptr = save_string(bufptr, "%>");
 613     bufptr = save_tc_char(bufptr, c1);
 614     bufptr = save_tc_char(bufptr, c2);
 615     return bufptr;
 616 }
 617
 618 /*
 619  * Here are the capabilities infotocap assumes it can translate to:
 620  *
 621  *     %%       output `%'
 622  *     %d       output value as in printf %d
 623  *     %2       output value as in printf %2d
 624  *     %3       output value as in printf %3d
 625  *     %.       output value as in printf %c
 626  *     %+c      add character c to value, then do %.
 627  *     %>xy     if value > x then add y, no output
 628  *     %r       reverse order of two parameters, no output
 629  *     %i       increment by one, no output
 630  *     %n       exclusive-or all parameters with 0140 (Datamedia 2500)
 631  *     %B       BCD (16*(value/10)) + (value%10), no output
 632  *     %D       Reverse coding (value - 2*(value%16)), no output (Delta Data).
 633  *     %m       exclusive-or all parameters with 0177 (not in 4.4BSD)
 634  */
 635
 636 /*
 637  * Convert a terminfo string to termcap format.  Parameters are as in
 638  * _nc_captoinfo().
 639  */
 640 NCURSES_EXPORT(char *)
 641 _nc_infotocap(const char *cap GCC_UNUSED, const char *str, int const parameterized)
 642 {
 643     int seenone = 0, seentwo = 0, saw_m = 0, saw_n = 0;
 644     const char *padding;
 645     const char *trimmed = 0;
 646     int in0, in1, in2;
 647     char ch1 = 0, ch2 = 0;
 648     char *bufptr = init_string();
 649     int len;
 650     bool syntax_error = FALSE;
 651
 652     /* we may have to move some trailing mandatory padding up front */
 653     padding = str + strlen(str) - 1;
 654     if (padding > str && *padding == '>' && *--padding == '/') {
 655         --padding;
 656         while (isdigit(UChar(*padding)) || *padding == '.' || *padding == '*')
 657             padding--;
 658         if (padding > str && *padding == '<' && *--padding == '$')
 659             trimmed = padding;
 660         padding += 2;
 661
 662         while (isdigit(UChar(*padding)) || *padding == '.' || *padding == '*')
 663             bufptr = save_char(bufptr, *padding++);
 664     }
 665
 666     for (; *str && str != trimmed; str++) {
 667         int c1, c2;
 668         char *cp = 0;
 669
 670         if (str[0] == '^') {
 671             if (str[1] == '\0' || (str + 1) == trimmed) {
 672                 bufptr = save_string(bufptr, "\\136");
 673                 ++str;
 674             } else {
 675                 bufptr = save_char(bufptr, *str++);
 676                 bufptr = save_char(bufptr, *str);
 677             }
 678         } else if (str[0] == '\\') {
 679             if (str[1] == '\0' || (str + 1) == trimmed) {
 680                 bufptr = save_string(bufptr, "\\134");
 681                 ++str;
 682             } else if (str[1] == '^') {
 683                 bufptr = save_string(bufptr, "\\136");
 684                 ++str;
 685             } else if (str[1] == ',') {
 686                 bufptr = save_char(bufptr, *++str);
 687             } else {
 688                 bufptr = save_char(bufptr, *str++);
 689                 bufptr = save_char(bufptr, *str);
 690             }
 691         } else if (str[0] == '$' && str[1] == '<') {    /* discard padding */
 692             str += 2;
 693             while (isdigit(UChar(*str))
 694                    || *str == '.'
 695                    || *str == '*'
 696                    || *str == '/'
 697                    || *str == '>')
 698                 str++;
 699             --str;
 700         } else if (sscanf(str,
 701                           "[%%?%%p1%%{8}%%<%%t%d%%p1%%d%%e%%p1%%{16}%%<%%t%d%%p1%%{8}%%-%%d%%e%d;5;%%p1%%d%%;m",
 702                           &in0, &in1, &in2) == 3
 703                    && ((in0 == 4 && in1 == 10 && in2 == 48)
 704                        || (in0 == 3 && in1 == 9 && in2 == 38))) {
 705             /* dumb-down an optimized case from xterm-256color for termcap */
 706             str = strstr(str, ";m");
 707             ++str;
 708             if (in2 == 48) {
 709                 bufptr = save_string(bufptr, "[48;5;%dm");
 710             } else {
 711                 bufptr = save_string(bufptr, "[38;5;%dm");
 712             }
 713         } else if (str[0] == '%' && str[1] == '%') {    /* escaped '%' */
 714             bufptr = save_string(bufptr, "%%");
 715             ++str;
 716         } else if (*str != '%' || (parameterized < 1)) {
 717             bufptr = save_char(bufptr, *str);
 718         } else if (sscanf(str, "%%?%%{%d}%%>%%t%%{%d}%%+%%;", &c1, &c2) == 2) {
 719             str = strchr(str, ';');
 720             bufptr = save_tc_inequality(bufptr, c1, c2);
 721         } else if (sscanf(str, "%%?%%{%d}%%>%%t%%'%c'%%+%%;", &c1, &ch2) == 2) {
 722             str = strchr(str, ';');
 723             bufptr = save_tc_inequality(bufptr, c1, c2);
 724         } else if (sscanf(str, "%%?%%'%c'%%>%%t%%{%d}%%+%%;", &ch1, &c2) == 2) {
 725             str = strchr(str, ';');
 726             bufptr = save_tc_inequality(bufptr, c1, c2);
 727         } else if (sscanf(str, "%%?%%'%c'%%>%%t%%'%c'%%+%%;", &ch1, &ch2) == 2) {
 728             str = strchr(str, ';');
 729             bufptr = save_tc_inequality(bufptr, c1, c2);
 730         } else if ((len = bcd_expression(str)) != 0) {
 731             str += len;
 732             bufptr = save_string(bufptr, "%B");
 733         } else if ((sscanf(str, "%%{%d}%%+%%c", &c1) == 1
 734                     || sscanf(str, "%%'%c'%%+%%c", &ch1) == 1)
 735                    && (cp = strchr(str, '+'))) {
 736             str = cp + 2;
 737             bufptr = save_string(bufptr, "%+");
 738
 739             if (ch1)
 740                 c1 = ch1;
 741             bufptr = save_tc_char(bufptr, c1);
 742         }
 743         /* FIXME: this "works" for 'delta' */
 744         else if (strncmp(str, "%{2}%*%-", 8) == 0) {
 745             str += 7;
 746             bufptr = save_string(bufptr, "%D");
 747         } else if (strncmp(str, "%{96}%^", 7) == 0) {
 748             str += 6;
 749             if (saw_m++ == 0) {
 750                 bufptr = save_string(bufptr, "%n");
 751             }
 752         } else if (strncmp(str, "%{127}%^", 8) == 0) {
 753             str += 7;
 754             if (saw_n++ == 0) {
 755                 bufptr = save_string(bufptr, "%m");
 756             }
 757         } else {                /* cm-style format element */
 758             str++;
 759             switch (*str) {
 760             case '%':
 761                 bufptr = save_char(bufptr, '%');
 762                 break;
 763
 764             case '0':
 765             case '1':
 766             case '2':
 767             case '3':
 768             case '4':
 769             case '5':
 770             case '6':
 771             case '7':
 772             case '8':
 773             case '9':
 774                 bufptr = save_char(bufptr, '%');
 775                 while (isdigit(UChar(*str)))
 776                     bufptr = save_char(bufptr, *str++);
 777                 if (strchr("doxX.", *str)) {
 778                     if (*str != 'd')    /* termcap doesn't have octal, hex */
 779                         return 0;
 780                 }
 781                 break;
 782
 783             case 'd':
 784                 bufptr = save_string(bufptr, "%d");
 785                 break;
 786
 787             case 'c':
 788                 bufptr = save_string(bufptr, "%.");
 789                 break;
 790
 791                 /*
 792                  * %s isn't in termcap, but it's convenient to pass it through
 793                  * so we can represent things like terminfo pfkey strings in
 794                  * termcap notation.
 795                  */
 796             case 's':
 797                 bufptr = save_string(bufptr, "%s");
 798                 break;
 799
 800             case 'p':
 801                 str++;
 802                 if (*str == '1')
 803                     seenone = 1;
 804                 else if (*str == '2') {
 805                     if (!seenone && !seentwo) {
 806                         bufptr = save_string(bufptr, "%r");
 807                         seentwo++;
 808                     }
 809                 } else if (*str >= '3')
 810                     return (0);
 811                 break;
 812
 813             case 'i':
 814                 bufptr = save_string(bufptr, "%i");
 815                 break;
 816
 817             default:
 818                 bufptr = save_char(bufptr, *str);
 819                 syntax_error = TRUE;
 820                 break;
 821             }                   /* endswitch (*str) */
 822         }                       /* endelse (*str == '%') */
 823
 824         /*
 825          * 'str' always points to the end of what was scanned in this step,
 826          * but that may not be the end of the string.
 827          */
 828         assert(str != 0);
 829         if (*str == '\0')
 830             break;
 831
 832     }                           /* endwhile (*str) */
 833
 834     return (syntax_error ? NULL : my_string);
 835 }
 836
 837 #ifdef MAIN
 838
 839 int curr_line;
 840
 841 int
 842 main(int argc, char *argv[])
 843 {
 844     int c, tc = FALSE;
 845
 846     while ((c = getopt(argc, argv, "c")) != EOF)
 847         switch (c) {
 848         case 'c':
 849             tc = TRUE;
 850             break;
 851         }
 852
 853     curr_line = 0;
 854     for (;;) {
 855         char buf[BUFSIZ];
 856
 857         ++curr_line;
 858         if (fgets(buf, sizeof(buf), stdin) == 0)
 859             break;
 860         buf[strlen(buf) - 1] = '\0';
 861         _nc_set_source(buf);
 862
 863         if (tc) {
 864             char *cp = _nc_infotocap("to termcap", buf, 1);
 865
 866             if (cp)
 867                 (void) fputs(cp, stdout);
 868         } else
 869             (void) fputs(_nc_captoinfo("to terminfo", buf, 1), stdout);
 870         (void) putchar('\n');
 871     }
 872     return (0);
 873 }
 874 #endif /* MAIN */
 875
 876 #if NO_LEAKS
 877 NCURSES_EXPORT(void)
 878 _nc_captoinfo_leaks(void)
 879 {
 880     if (my_string != 0) {
 881         FreeAndNull(my_string);
 882     }
 883     my_length = 0;
 884 }
 885 #endif