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4854 printf(1) doesn't support %b and 


  75 static int       getchr(void);
  76 static int       getfloating(long double *, int);
  77 static int       getint(int *);
  78 static int       getnum(intmax_t *, uintmax_t *, int);
  79 static const char
  80                 *getstr(void);
  81 static char     *mknum(char *, char);
  82 static void      usage(void);
  83 
  84 static const char digits[] = "0123456789";
  85 
  86 static int  myargc;
  87 static char **myargv;
  88 static char **gargv;
  89 static char **maxargv;
  90 
  91 int
  92 main(int argc, char *argv[])
  93 {
  94         size_t len;
  95         int chopped, end, rval;
  96         char *format, *fmt, *start;
  97 
  98         (void) setlocale(LC_ALL, "");
  99 
 100         argv++;
 101         argc--;
 102 
 103         /*
 104          * POSIX says: Standard utilities that do not accept options,
 105          * but that do accept operands, shall recognize "--" as a
 106          * first argument to be discarded.
 107          */
 108         if (argc && strcmp(argv[0], "--") == 0) {
 109                 argc--;
 110                 argv++;
 111         }
 112 
 113         if (argc < 1) {
 114                 usage();
 115                 return (1);
 116         }
 117 
 118         /*
 119          * Basic algorithm is to scan the format string for conversion
 120          * specifications -- once one is found, find out if the field
 121          * width or precision is a '*'; if it is, gather up value.  Note,
 122          * format strings are reused as necessary to use up the provided
 123          * arguments, arguments of zero/null string are provided to use
 124          * up the format string.
 125          */
 126         fmt = format = *argv;
 127         chopped = escape(fmt, 1, &len);             /* backslash interpretation */
 128         rval = end = 0;
 129         gargv = ++argv;
 130 
 131         for (;;) {
 132                 maxargv = gargv;
 133 
 134                 myargv = gargv;
 135                 for (myargc = 0; gargv[myargc]; myargc++)
 136                         /* nop */;
 137                 start = fmt;
 138                 while (fmt < format + len) {
 139                         if (fmt[0] == '%') {
 140                                 (void) fwrite(start, 1, PTRDIFF(fmt, start),
 141                                     stdout);
 142                                 if (fmt[1] == '%') {
 143                                         /* %% prints a % */
 144                                         (void) putchar('%');
 145                                         fmt += 2;
 146                                 } else {
 147                                         fmt = doformat(fmt, &rval);
 148                                         if (fmt == NULL)
 149                                                 return (1);
 150                                         end = 0;
 151                                 }
 152                                 start = fmt;
 153                         } else
 154                                 fmt++;
 155                         if (gargv > maxargv)
 156                                 maxargv = gargv;
 157                 }
 158                 gargv = maxargv;
 159 
 160                 if (end == 1) {
 161                         warnx1(_("missing format character"), NULL, NULL);
 162                         return (1);
 163                 }
 164                 (void) fwrite(start, 1, PTRDIFF(fmt, start), stdout);
 165                 if (chopped || !*gargv)
 166                         return (rval);
 167                 /* Restart at the beginning of the format string. */
 168                 fmt = format;
 169                 end = 1;
 170         }
 171         /* NOTREACHED */
 172 }
 173 
 174 
 175 static char *
 176 doformat(char *fmt, int *rval)
 177 {
 178         static const char skip1[] = "#'-+ 0";
 179         int fieldwidth, haveprec, havewidth, mod_ldbl, precision;
 180         char convch, nextch;
 181         char *start;
 182         char **fargv;
 183         char *dptr;
 184         int l;
 185 


 321         if (fargv != NULL) {
 322                 gargv = fargv;
 323         }
 324 
 325         convch = *fmt;
 326         nextch = *++fmt;
 327 
 328         *fmt = '\0';
 329         switch (convch) {
 330         case 'b': {
 331                 size_t len;
 332                 char *p;
 333                 int getout;
 334 
 335                 p = strdup(getstr());
 336                 if (p == NULL) {
 337                         warnx2("%s", strerror(ENOMEM), NULL);
 338                         return (NULL);
 339                 }
 340                 getout = escape(p, 0, &len);
 341                 *(fmt - 1) = 's';
 342                 PF(start, p);
 343                 *(fmt - 1) = 'b';
 344                 free(p);
 345 
 346                 if (getout)
 347                         return (fmt);
 348                 break;
 349         }
 350         case 'c': {
 351                 char p;
 352 
 353                 p = getchr();
 354                 PF(start, p);
 355                 break;
 356         }
 357         case 's': {
 358                 const char *p;
 359 
 360                 p = getstr();
 361                 PF(start, p);
 362                 break;
 363         }
 364         case 'd': case 'i': case 'o': case 'u': case 'x': case 'X': {
 365                 char *f;
 366                 intmax_t val;
 367                 uintmax_t uval;


 439                         *store = c;
 440                         continue;
 441                 }
 442                 switch (*++fmt) {
 443                 case '\0':              /* EOS, user error */
 444                         *store = '\\';
 445                         *++store = '\0';
 446                         *len = PTRDIFF(store, save);
 447                         return (0);
 448                 case '\\':              /* backslash */
 449                 case '\'':              /* single quote */
 450                         *store = *fmt;
 451                         break;
 452                 case 'a':               /* bell/alert */
 453                         *store = '\a';
 454                         break;
 455                 case 'b':               /* backspace */
 456                         *store = '\b';
 457                         break;
 458                 case 'c':

 459                         *store = '\0';
 460                         *len = PTRDIFF(store, save);
 461                         return (1);



 462                 case 'f':               /* form-feed */
 463                         *store = '\f';
 464                         break;
 465                 case 'n':               /* newline */
 466                         *store = '\n';
 467                         break;
 468                 case 'r':               /* carriage-return */
 469                         *store = '\r';
 470                         break;
 471                 case 't':               /* horizontal tab */
 472                         *store = '\t';
 473                         break;
 474                 case 'v':               /* vertical tab */
 475                         *store = '\v';
 476                         break;
 477                                         /* octal constant */
 478                 case '0': case '1': case '2': case '3':
 479                 case '4': case '5': case '6': case '7':
 480                         c = (!percent && *fmt == '0') ? 4 : 3;
 481                         for (value = 0;




  75 static int       getchr(void);
  76 static int       getfloating(long double *, int);
  77 static int       getint(int *);
  78 static int       getnum(intmax_t *, uintmax_t *, int);
  79 static const char
  80                 *getstr(void);
  81 static char     *mknum(char *, char);
  82 static void      usage(void);
  83 
  84 static const char digits[] = "0123456789";
  85 
  86 static int  myargc;
  87 static char **myargv;
  88 static char **gargv;
  89 static char **maxargv;
  90 
  91 int
  92 main(int argc, char *argv[])
  93 {
  94         size_t len;
  95         int end, rval;
  96         char *format, *fmt, *start;
  97 
  98         (void) setlocale(LC_ALL, "");
  99 
 100         argv++;
 101         argc--;
 102 
 103         /*
 104          * POSIX says: Standard utilities that do not accept options,
 105          * but that do accept operands, shall recognize "--" as a
 106          * first argument to be discarded.
 107          */
 108         if (argc && strcmp(argv[0], "--") == 0) {
 109                 argc--;
 110                 argv++;
 111         }
 112 
 113         if (argc < 1) {
 114                 usage();
 115                 return (1);
 116         }
 117 
 118         /*
 119          * Basic algorithm is to scan the format string for conversion
 120          * specifications -- once one is found, find out if the field
 121          * width or precision is a '*'; if it is, gather up value.  Note,
 122          * format strings are reused as necessary to use up the provided
 123          * arguments, arguments of zero/null string are provided to use
 124          * up the format string.
 125          */
 126         fmt = format = *argv;
 127         (void) escape(fmt, 1, &len);        /* backslash interpretation */
 128         rval = end = 0;
 129         gargv = ++argv;
 130 
 131         for (;;) {
 132                 maxargv = gargv;
 133 
 134                 myargv = gargv;
 135                 for (myargc = 0; gargv[myargc]; myargc++)
 136                         /* nop */;
 137                 start = fmt;
 138                 while (fmt < format + len) {
 139                         if (fmt[0] == '%') {
 140                                 (void) fwrite(start, 1, PTRDIFF(fmt, start),
 141                                     stdout);
 142                                 if (fmt[1] == '%') {
 143                                         /* %% prints a % */
 144                                         (void) putchar('%');
 145                                         fmt += 2;
 146                                 } else {
 147                                         fmt = doformat(fmt, &rval);
 148                                         if (fmt == NULL)
 149                                                 return (1);
 150                                         end = 0;
 151                                 }
 152                                 start = fmt;
 153                         } else
 154                                 fmt++;
 155                         if (gargv > maxargv)
 156                                 maxargv = gargv;
 157                 }
 158                 gargv = maxargv;
 159 
 160                 if (end == 1) {
 161                         warnx1(_("missing format character"), NULL, NULL);
 162                         return (1);
 163                 }
 164                 (void) fwrite(start, 1, PTRDIFF(fmt, start), stdout);
 165                 if (!*gargv)
 166                         return (rval);
 167                 /* Restart at the beginning of the format string. */
 168                 fmt = format;
 169                 end = 1;
 170         }
 171         /* NOTREACHED */
 172 }
 173 
 174 
 175 static char *
 176 doformat(char *fmt, int *rval)
 177 {
 178         static const char skip1[] = "#'-+ 0";
 179         int fieldwidth, haveprec, havewidth, mod_ldbl, precision;
 180         char convch, nextch;
 181         char *start;
 182         char **fargv;
 183         char *dptr;
 184         int l;
 185 


 321         if (fargv != NULL) {
 322                 gargv = fargv;
 323         }
 324 
 325         convch = *fmt;
 326         nextch = *++fmt;
 327 
 328         *fmt = '\0';
 329         switch (convch) {
 330         case 'b': {
 331                 size_t len;
 332                 char *p;
 333                 int getout;
 334 
 335                 p = strdup(getstr());
 336                 if (p == NULL) {
 337                         warnx2("%s", strerror(ENOMEM), NULL);
 338                         return (NULL);
 339                 }
 340                 getout = escape(p, 0, &len);
 341                 (void) fputs(p, stdout);


 342                 free(p);
 343 
 344                 if (getout)
 345                         exit(*rval);
 346                 break;
 347         }
 348         case 'c': {
 349                 char p;
 350 
 351                 p = getchr();
 352                 PF(start, p);
 353                 break;
 354         }
 355         case 's': {
 356                 const char *p;
 357 
 358                 p = getstr();
 359                 PF(start, p);
 360                 break;
 361         }
 362         case 'd': case 'i': case 'o': case 'u': case 'x': case 'X': {
 363                 char *f;
 364                 intmax_t val;
 365                 uintmax_t uval;


 437                         *store = c;
 438                         continue;
 439                 }
 440                 switch (*++fmt) {
 441                 case '\0':              /* EOS, user error */
 442                         *store = '\\';
 443                         *++store = '\0';
 444                         *len = PTRDIFF(store, save);
 445                         return (0);
 446                 case '\\':              /* backslash */
 447                 case '\'':              /* single quote */
 448                         *store = *fmt;
 449                         break;
 450                 case 'a':               /* bell/alert */
 451                         *store = '\a';
 452                         break;
 453                 case 'b':               /* backspace */
 454                         *store = '\b';
 455                         break;
 456                 case 'c':
 457                         if (!percent) {
 458                                 *store = '\0';
 459                                 *len = PTRDIFF(store, save);
 460                                 return (1);
 461                         }
 462                         *store = 'c';
 463                         break;
 464                 case 'f':               /* form-feed */
 465                         *store = '\f';
 466                         break;
 467                 case 'n':               /* newline */
 468                         *store = '\n';
 469                         break;
 470                 case 'r':               /* carriage-return */
 471                         *store = '\r';
 472                         break;
 473                 case 't':               /* horizontal tab */
 474                         *store = '\t';
 475                         break;
 476                 case 'v':               /* vertical tab */
 477                         *store = '\v';
 478                         break;
 479                                         /* octal constant */
 480                 case '0': case '1': case '2': case '3':
 481                 case '4': case '5': case '6': case '7':
 482                         c = (!percent && *fmt == '0') ? 4 : 3;
 483                         for (value = 0;