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Diffstat (limited to 'bin/1sh/printf.c')
| -rw-r--r-- | bin/1sh/printf.c | 686 |
1 files changed, 0 insertions, 686 deletions
diff --git a/bin/1sh/printf.c b/bin/1sh/printf.c deleted file mode 100644 index 2545fb62..00000000 --- a/bin/1sh/printf.c +++ /dev/null @@ -1,686 +0,0 @@ -/*- - * SPDX-License-Identifier: BSD-3-Clause - * - * Copyright 2018 Staysail Systems, Inc. <info@staysail.tech> - * Copyright 2014 Garrett D'Amore <garrett@damore.org> - * Copyright 2010 Nexenta Systems, Inc. All rights reserved. - * Copyright (c) 1989, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ -/* - * Important: This file is used both as a standalone program /usr/bin/printf - * and as a builtin for /bin/sh (#define SHELL). - */ - -#ifndef SHELL -#ifndef lint -static char const copyright[] = -"@(#) Copyright (c) 1989, 1993\n\ - The Regents of the University of California. All rights reserved.\n"; -#endif /* not lint */ -#endif - -#if 0 -static char const sccsid[] = "@(#)printf.c 8.1 (Berkeley) 7/20/93"; -static const char rcsid[] = - "$FreeBSD: releng/12.1/usr.bin/printf/printf.c 337618 2018-08-11 11:13:34Z jilles $"; -#endif - -#include <sys/types.h> - -#include <ctype.h> -#include <err.h> -#include <errno.h> -#include <inttypes.h> -#include <limits.h> -#include <locale.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <wchar.h> - -#ifdef SHELL -#define main printfcmd -#include "bltin.h" -#include "options.h" -#endif - -#define PF(f, func) do { \ - if (havewidth) \ - if (haveprec) \ - (void)printf(f, fieldwidth, precision, func); \ - else \ - (void)printf(f, fieldwidth, func); \ - else if (haveprec) \ - (void)printf(f, precision, func); \ - else \ - (void)printf(f, func); \ -} while (0) - -static int asciicode(void); -static char *printf_doformat(char *, int *); -static int escape(char *, int, size_t *); -static int getchr(void); -static int getfloating(long double *, int); -static int getint(int *); -static int getnum(intmax_t *, uintmax_t *, int); -static const char - *getstr(void); -static char *mknum(char *, char); -static void usage(void); - -static const char digits[] = "0123456789"; - -static char end_fmt[1]; - -static int myargc; -static char **myargv; -static char **gargv; -static char **maxargv; - -int -main(int argc, char *argv[]) -{ - size_t len; - int end, rval; - char *format, *fmt, *start; -#ifndef SHELL - int ch; - - (void) setlocale(LC_ALL, ""); -#endif - -#ifdef SHELL - nextopt(""); - argc -= argptr - argv; - argv = argptr; -#else - while ((ch = getopt(argc, argv, "")) != -1) - switch (ch) { - case '?': - default: - usage(); - return (1); - } - argc -= optind; - argv += optind; -#endif - - if (argc < 1) { - usage(); - return (1); - } - -#ifdef SHELL - INTOFF; -#endif - /* - * Basic algorithm is to scan the format string for conversion - * specifications -- once one is found, find out if the field - * width or precision is a '*'; if it is, gather up value. Note, - * format strings are reused as necessary to use up the provided - * arguments, arguments of zero/null string are provided to use - * up the format string. - */ - fmt = format = *argv; - escape(fmt, 1, &len); /* backslash interpretation */ - rval = end = 0; - gargv = ++argv; - - for (;;) { - maxargv = gargv; - - myargv = gargv; - for (myargc = 0; gargv[myargc]; myargc++) - /* nop */; - start = fmt; - while (fmt < format + len) { - if (fmt[0] == '%') { - fwrite(start, 1, fmt - start, stdout); - if (fmt[1] == '%') { - /* %% prints a % */ - putchar('%'); - fmt += 2; - } else { - fmt = printf_doformat(fmt, &rval); - if (fmt == NULL || fmt == end_fmt) { -#ifdef SHELL - INTON; -#endif - return (fmt == NULL ? 1 : rval); - } - end = 0; - } - start = fmt; - } else - fmt++; - if (gargv > maxargv) - maxargv = gargv; - } - gargv = maxargv; - - if (end == 1) { - warnx("missing format character"); -#ifdef SHELL - INTON; -#endif - return (1); - } - fwrite(start, 1, fmt - start, stdout); - if (!*gargv) { -#ifdef SHELL - INTON; -#endif - return (rval); - } - /* Restart at the beginning of the format string. */ - fmt = format; - end = 1; - } - /* NOTREACHED */ -} - - -static char * -printf_doformat(char *fmt, int *rval) -{ - static const char skip1[] = "#'-+ 0"; - int fieldwidth, haveprec, havewidth, mod_ldbl, precision; - char convch, nextch; - char start[strlen(fmt) + 1]; - char **fargv; - char *dptr; - int l; - - dptr = start; - *dptr++ = '%'; - *dptr = 0; - - fmt++; - - /* look for "n$" field index specifier */ - l = strspn(fmt, digits); - if ((l > 0) && (fmt[l] == '$')) { - int idx = atoi(fmt); - if (idx <= myargc) { - gargv = &myargv[idx - 1]; - } else { - gargv = &myargv[myargc]; - } - if (gargv > maxargv) - maxargv = gargv; - fmt += l + 1; - - /* save format argument */ - fargv = gargv; - } else { - fargv = NULL; - } - - /* skip to field width */ - while (*fmt && strchr(skip1, *fmt) != NULL) { - *dptr++ = *fmt++; - *dptr = 0; - } - - if (*fmt == '*') { - - fmt++; - l = strspn(fmt, digits); - if ((l > 0) && (fmt[l] == '$')) { - int idx = atoi(fmt); - if (fargv == NULL) { - warnx("incomplete use of n$"); - return (NULL); - } - if (idx <= myargc) { - gargv = &myargv[idx - 1]; - } else { - gargv = &myargv[myargc]; - } - fmt += l + 1; - } else if (fargv != NULL) { - warnx("incomplete use of n$"); - return (NULL); - } - - if (getint(&fieldwidth)) - return (NULL); - if (gargv > maxargv) - maxargv = gargv; - havewidth = 1; - - *dptr++ = '*'; - *dptr = 0; - } else { - havewidth = 0; - - /* skip to possible '.', get following precision */ - while (isdigit(*fmt)) { - *dptr++ = *fmt++; - *dptr = 0; - } - } - - if (*fmt == '.') { - /* precision present? */ - fmt++; - *dptr++ = '.'; - - if (*fmt == '*') { - - fmt++; - l = strspn(fmt, digits); - if ((l > 0) && (fmt[l] == '$')) { - int idx = atoi(fmt); - if (fargv == NULL) { - warnx("incomplete use of n$"); - return (NULL); - } - if (idx <= myargc) { - gargv = &myargv[idx - 1]; - } else { - gargv = &myargv[myargc]; - } - fmt += l + 1; - } else if (fargv != NULL) { - warnx("incomplete use of n$"); - return (NULL); - } - - if (getint(&precision)) - return (NULL); - if (gargv > maxargv) - maxargv = gargv; - haveprec = 1; - *dptr++ = '*'; - *dptr = 0; - } else { - haveprec = 0; - - /* skip to conversion char */ - while (isdigit(*fmt)) { - *dptr++ = *fmt++; - *dptr = 0; - } - } - } else - haveprec = 0; - if (!*fmt) { - warnx("missing format character"); - return (NULL); - } - *dptr++ = *fmt; - *dptr = 0; - - /* - * Look for a length modifier. POSIX doesn't have these, so - * we only support them for floating-point conversions, which - * are extensions. This is useful because the L modifier can - * be used to gain extra range and precision, while omitting - * it is more likely to produce consistent results on different - * architectures. This is not so important for integers - * because overflow is the only bad thing that can happen to - * them, but consider the command printf %a 1.1 - */ - if (*fmt == 'L') { - mod_ldbl = 1; - fmt++; - if (!strchr("aAeEfFgG", *fmt)) { - warnx("bad modifier L for %%%c", *fmt); - return (NULL); - } - } else { - mod_ldbl = 0; - } - - /* save the current arg offset, and set to the format arg */ - if (fargv != NULL) { - gargv = fargv; - } - - convch = *fmt; - nextch = *++fmt; - - *fmt = '\0'; - switch (convch) { - case 'b': { - size_t len; - char *p; - int getout; - - /* Convert "b" to "s" for output. */ - start[strlen(start) - 1] = 's'; - if ((p = strdup(getstr())) == NULL) { - warnx("%s", strerror(ENOMEM)); - return (NULL); - } - getout = escape(p, 0, &len); - PF(start, p); - /* Restore format for next loop. */ - - free(p); - if (getout) - return (end_fmt); - break; - } - case 'c': { - char p; - - p = getchr(); - if (p != '\0') - PF(start, p); - break; - } - case 's': { - const char *p; - - p = getstr(); - PF(start, p); - break; - } - case 'd': case 'i': case 'o': case 'u': case 'x': case 'X': { - char *f; - intmax_t val; - uintmax_t uval; - int signedconv; - - signedconv = (convch == 'd' || convch == 'i'); - if ((f = mknum(start, convch)) == NULL) - return (NULL); - if (getnum(&val, &uval, signedconv)) - *rval = 1; - if (signedconv) - PF(f, val); - else - PF(f, uval); - break; - } - case 'e': case 'E': - case 'f': case 'F': - case 'g': case 'G': - case 'a': case 'A': { - long double p; - - if (getfloating(&p, mod_ldbl)) - *rval = 1; - if (mod_ldbl) - PF(start, p); - else - PF(start, (double)p); - break; - } - default: - warnx("illegal format character %c", convch); - return (NULL); - } - *fmt = nextch; - /* return the gargv to the next element */ - return (fmt); -} - -static char * -mknum(char *str, char ch) -{ - static char *copy; - static size_t copy_size; - char *newcopy; - size_t len, newlen; - - len = strlen(str) + 2; - if (len > copy_size) { - newlen = ((len + 1023) >> 10) << 10; - if ((newcopy = realloc(copy, newlen)) == NULL) { - warnx("%s", strerror(ENOMEM)); - return (NULL); - } - copy = newcopy; - copy_size = newlen; - } - - memmove(copy, str, len - 3); - copy[len - 3] = 'j'; - copy[len - 2] = ch; - copy[len - 1] = '\0'; - return (copy); -} - -static int -escape(char *fmt, int percent, size_t *len) -{ - char *save, *store, c; - int value; - - for (save = store = fmt; ((c = *fmt) != 0); ++fmt, ++store) { - if (c != '\\') { - *store = c; - continue; - } - switch (*++fmt) { - case '\0': /* EOS, user error */ - *store = '\\'; - *++store = '\0'; - *len = store - save; - return (0); - case '\\': /* backslash */ - case '\'': /* single quote */ - *store = *fmt; - break; - case 'a': /* bell/alert */ - *store = '\a'; - break; - case 'b': /* backspace */ - *store = '\b'; - break; - case 'c': - if (!percent) { - *store = '\0'; - *len = store - save; - return (1); - } - *store = 'c'; - break; - case 'f': /* form-feed */ - *store = '\f'; - break; - case 'n': /* newline */ - *store = '\n'; - break; - case 'r': /* carriage-return */ - *store = '\r'; - break; - case 't': /* horizontal tab */ - *store = '\t'; - break; - case 'v': /* vertical tab */ - *store = '\v'; - break; - /* octal constant */ - case '0': case '1': case '2': case '3': - case '4': case '5': case '6': case '7': - c = (!percent && *fmt == '0') ? 4 : 3; - for (value = 0; - c-- && *fmt >= '0' && *fmt <= '7'; ++fmt) { - value <<= 3; - value += *fmt - '0'; - } - --fmt; - if (percent && value == '%') { - *store++ = '%'; - *store = '%'; - } else - *store = (char)value; - break; - default: - *store = *fmt; - break; - } - } - *store = '\0'; - *len = store - save; - return (0); -} - -static int -getchr(void) -{ - if (!*gargv) - return ('\0'); - return ((int)**gargv++); -} - -static const char * -getstr(void) -{ - if (!*gargv) - return (""); - return (*gargv++); -} - -static int -getint(int *ip) -{ - intmax_t val; - uintmax_t uval; - int rval; - - if (getnum(&val, &uval, 1)) - return (1); - rval = 0; - if (val < INT_MIN || val > INT_MAX) { - warnx("%s: %s", *gargv, strerror(ERANGE)); - rval = 1; - } - *ip = (int)val; - return (rval); -} - -static int -getnum(intmax_t *ip, uintmax_t *uip, int signedconv) -{ - char *ep; - int rval; - - if (!*gargv) { - *ip = *uip = 0; - return (0); - } - if (**gargv == '"' || **gargv == '\'') { - if (signedconv) - *ip = asciicode(); - else - *uip = asciicode(); - return (0); - } - rval = 0; - errno = 0; - if (signedconv) - *ip = strtoimax(*gargv, &ep, 0); - else - *uip = strtoumax(*gargv, &ep, 0); - if (ep == *gargv) { - warnx("%s: expected numeric value", *gargv); - rval = 1; - } - else if (*ep != '\0') { - warnx("%s: not completely converted", *gargv); - rval = 1; - } - if (errno == ERANGE) { - warnx("%s: %s", *gargv, strerror(ERANGE)); - rval = 1; - } - ++gargv; - return (rval); -} - -static int -getfloating(long double *dp, int mod_ldbl) -{ - char *ep; - int rval; - - if (!*gargv) { - *dp = 0.0; - return (0); - } - if (**gargv == '"' || **gargv == '\'') { - *dp = asciicode(); - return (0); - } - rval = 0; - errno = 0; - if (mod_ldbl) - *dp = strtold(*gargv, &ep); - else - *dp = strtod(*gargv, &ep); - if (ep == *gargv) { - warnx("%s: expected numeric value", *gargv); - rval = 1; - } else if (*ep != '\0') { - warnx("%s: not completely converted", *gargv); - rval = 1; - } - if (errno == ERANGE) { - warnx("%s: %s", *gargv, strerror(ERANGE)); - rval = 1; - } - ++gargv; - return (rval); -} - -static int -asciicode(void) -{ - int ch; - wchar_t wch; - mbstate_t mbs; - - ch = (unsigned char)**gargv; - if (ch == '\'' || ch == '"') { - memset(&mbs, 0, sizeof(mbs)); - switch (mbrtowc(&wch, *gargv + 1, MB_LEN_MAX, &mbs)) { - case (size_t)-2: - case (size_t)-1: - wch = (unsigned char)gargv[0][1]; - break; - case 0: - wch = 0; - break; - } - ch = wch; - } - ++gargv; - return (ch); -} - -static void -usage(void) -{ - (void)fprintf(stderr, "usage: printf format [arguments ...]\n"); -} |