/* vi: set sw=4 ts=4: */
/* printf - format and print data
- Copyright (C) 90, 91, 92, 93, 94, 95, 1996 Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
+ Copyright 1999 Dave Cinege
+ Portions copyright (C) 1990-1996 Free Software Foundation, Inc.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software Foundation,
- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ Licensed under GPL v2 or later, see file LICENSE in this tarball for details.
+*/
/* Usage: printf format [argument...]
%b = print an argument string, interpreting backslash escapes
- The `format' argument is re-used as many times as necessary
+ The 'format' argument is re-used as many times as necessary
to convert all of the given arguments.
David MacKenzie <djm@gnu.ai.mit.edu> */
// 19990508 Busy Boxed! Dave Cinege
-#include "internal.h"
-#include <unistd.h>
-#include <stdio.h>
-#include <sys/types.h>
-#include <getopt.h>
-#include <sys/stat.h>
-#include <string.h>
-#include <errno.h>
-#include <stdlib.h>
-#include <fcntl.h>
-#include <ctype.h>
-#include <libintl.h>
-
-
-#ifndef S_IFMT
-# define S_IFMT 0170000
-#endif
-#if !defined(S_ISBLK) && defined(S_IFBLK)
-# define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
-#endif
-#if !defined(S_ISCHR) && defined(S_IFCHR)
-# define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
-#endif
-#if !defined(S_ISDIR) && defined(S_IFDIR)
-# define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
-#endif
-#if !defined(S_ISREG) && defined(S_IFREG)
-# define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
-#endif
-#if !defined(S_ISFIFO) && defined(S_IFIFO)
-# define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
-#endif
-#if !defined(S_ISLNK) && defined(S_IFLNK)
-# define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
-#endif
-#if !defined(S_ISSOCK) && defined(S_IFSOCK)
-# define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
-#endif
-#if !defined(S_ISMPB) && defined(S_IFMPB) /* V7 */
-# define S_ISMPB(m) (((m) & S_IFMT) == S_IFMPB)
-# define S_ISMPC(m) (((m) & S_IFMT) == S_IFMPC)
-#endif
-#if !defined(S_ISNWK) && defined(S_IFNWK) /* HP/UX */
-# define S_ISNWK(m) (((m) & S_IFMT) == S_IFNWK)
-#endif
-
-#define IN_CTYPE_DOMAIN(c) 1
-
-#ifdef isblank
-# define ISBLANK(c) (IN_CTYPE_DOMAIN (c) && isblank (c))
-#else
-# define ISBLANK(c) ((c) == ' ' || (c) == '\t')
-#endif
-#ifdef isgraph
-# define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isgraph (c))
-#else
-# define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isprint (c) && !isspace (c))
-#endif
-
-#define ISPRINT(c) (IN_CTYPE_DOMAIN (c) && isprint (c))
-#define ISALNUM(c) (IN_CTYPE_DOMAIN (c) && isalnum (c))
-#define ISALPHA(c) (IN_CTYPE_DOMAIN (c) && isalpha (c))
-#define ISCNTRL(c) (IN_CTYPE_DOMAIN (c) && iscntrl (c))
-#define ISLOWER(c) (IN_CTYPE_DOMAIN (c) && islower (c))
-#define ISPUNCT(c) (IN_CTYPE_DOMAIN (c) && ispunct (c))
-#define ISSPACE(c) (IN_CTYPE_DOMAIN (c) && isspace (c))
-#define ISUPPER(c) (IN_CTYPE_DOMAIN (c) && isupper (c))
-#define ISXDIGIT(c) (IN_CTYPE_DOMAIN (c) && isxdigit (c))
-#define ISDIGIT_LOCALE(c) (IN_CTYPE_DOMAIN (c) && isdigit (c))
-#define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)
-
-#define isodigit(c) ((c) >= '0' && (c) <= '7')
-#define hextobin(c) ((c)>='a'&&(c)<='f' ? (c)-'a'+10 : (c)>='A'&&(c)<='F' ? (c)-'A'+10 : (c)-'0')
-#define octtobin(c) ((c) - '0')
-
-static double xstrtod __P((char *s));
-static int print_esc __P((char *escstart));
-static int print_formatted __P((char *format, int argc, char **argv));
-static long xstrtol __P((char *s));
-static unsigned long xstrtoul __P((char *s));
-static void print_direc
-__P(
-
- (char *start, size_t length, int field_width, int precision,
- char *argument));
-static void print_esc_char __P((int c));
-static void print_esc_string __P((char *str));
-static void verify __P((char *s, char *end));
-
-/* The value to return to the calling program. */
-static int exit_status;
-
-static const char printf_usage[] = "printf FORMAT [ARGUMENT...]\n"
-#ifndef BB_FEATURE_TRIVIAL_HELP
- "\nFormats and prints ARGUMENT(s) according to FORMAT,\n"
- "Where FORMAT controls the output exactly as in C printf.\n"
-#endif
- ;
+#include "busybox.h"
-int printf_main(int argc, char **argv)
+typedef void (*converter)(const char *arg, void *result);
+
+static void multiconvert(const char *arg, void *result, converter convert)
{
- char *format;
- int args_used;
+ char s[sizeof(int)*3 + 2];
- exit_status = 0;
- if (argc <= 1 || **(argv + 1) == '-') {
- usage(printf_usage);
+ if (*arg == '"' || *arg == '\'') {
+ sprintf(s, "%d", (unsigned char)arg[1]);
+ arg = s;
}
+ convert(arg, result);
+ /* if there was conversion error, print unconverted string */
+ if (errno)
+ fputs(arg, stderr);
+}
- format = argv[1];
- argc -= 2;
- argv += 2;
+static void conv_strtoul(const char *arg, void *result)
+{
+ *(unsigned long*)result = bb_strtoul(arg, NULL, 0);
+}
+static void conv_strtol(const char *arg, void *result)
+{
+ *(long*)result = bb_strtol(arg, NULL, 0);
+}
+static void conv_strtod(const char *arg, void *result)
+{
+ char *end;
+ /* Well, this one allows leading whitespace... so what */
+ /* What I like much less is that "-" is accepted too! :( */
+ *(double*)result = strtod(arg, &end);
+ if (end[0]) errno = ERANGE;
+}
+
+static unsigned long my_xstrtoul(const char *arg)
+{
+ unsigned long result;
+ multiconvert(arg, &result, conv_strtoul);
+ return result;
+}
+
+static long my_xstrtol(const char *arg)
+{
+ long result;
+ multiconvert(arg, &result, conv_strtol);
+ return result;
+}
+
+static double my_xstrtod(const char *arg)
+{
+ double result;
+ multiconvert(arg, &result, conv_strtod);
+ return result;
+}
+
+static void print_esc_string(char *str)
+{
+ for (; *str; str++) {
+ if (*str == '\\') {
+ str++;
+ putchar(bb_process_escape_sequence((const char **)&str));
+ } else {
+ putchar(*str);
+ }
- do {
- args_used = print_formatted(format, argc, argv);
- argc -= args_used;
- argv += args_used;
}
- while (args_used > 0 && argc > 0);
+}
-/*
- if (argc > 0)
- fprintf(stderr, "excess args ignored");
-*/
+static void print_direc(char *start, size_t length, int field_width, int precision,
+ const char *argument)
+{
+ char *p; /* Null-terminated copy of % directive. */
+
+ p = xmalloc((unsigned) (length + 1));
+ strncpy(p, start, length);
+ p[length] = 0;
+
+ switch (p[length - 1]) {
+ case 'd':
+ case 'i':
+ if (field_width < 0) {
+ if (precision < 0)
+ printf(p, my_xstrtol(argument));
+ else
+ printf(p, precision, my_xstrtol(argument));
+ } else {
+ if (precision < 0)
+ printf(p, field_width, my_xstrtol(argument));
+ else
+ printf(p, field_width, precision, my_xstrtol(argument));
+ }
+ break;
+ case 'o':
+ case 'u':
+ case 'x':
+ case 'X':
+ if (field_width < 0) {
+ if (precision < 0)
+ printf(p, my_xstrtoul(argument));
+ else
+ printf(p, precision, my_xstrtoul(argument));
+ } else {
+ if (precision < 0)
+ printf(p, field_width, my_xstrtoul(argument));
+ else
+ printf(p, field_width, precision, my_xstrtoul(argument));
+ }
+ break;
+ case 'f':
+ case 'e':
+ case 'E':
+ case 'g':
+ case 'G':
+ if (field_width < 0) {
+ if (precision < 0)
+ printf(p, my_xstrtod(argument));
+ else
+ printf(p, precision, my_xstrtod(argument));
+ } else {
+ if (precision < 0)
+ printf(p, field_width, my_xstrtod(argument));
+ else
+ printf(p, field_width, precision, my_xstrtod(argument));
+ }
+ break;
+ case 'c':
+ printf(p, *argument);
+ break;
+ case 's':
+ if (field_width < 0) {
+ if (precision < 0)
+ printf(p, argument);
+ else
+ printf(p, precision, argument);
+ } else {
+ if (precision < 0)
+ printf(p, field_width, argument);
+ else
+ printf(p, field_width, precision, argument);
+ }
+ break;
+ }
- exit(exit_status);
+ free(p);
}
/* Print the text in FORMAT, using ARGV (with ARGC elements) for
- arguments to any `%' directives.
+ arguments to any '%' directives.
Return the number of elements of ARGV used. */
static int print_formatted(char *format, int argc, char **argv)
{
- int save_argc = argc; /* Preserve original value. */
- char *f; /* Pointer into `format'. */
- char *direc_start; /* Start of % directive. */
- size_t direc_length; /* Length of % directive. */
- int field_width; /* Arg to first '*', or -1 if none. */
- int precision; /* Arg to second '*', or -1 if none. */
+ int save_argc = argc; /* Preserve original value. */
+ char *f; /* Pointer into 'format'. */
+ char *direc_start; /* Start of % directive. */
+ size_t direc_length; /* Length of % directive. */
+ int field_width; /* Arg to first '*', or -1 if none. */
+ int precision; /* Arg to second '*', or -1 if none. */
for (f = format; *f; ++f) {
switch (*f) {
++f;
++direc_length;
if (argc > 0) {
- field_width = xstrtoul(*argv);
+ field_width = my_xstrtoul(*argv);
++argv;
--argc;
} else
field_width = 0;
- } else
- while (ISDIGIT(*f)) {
+ } else {
+ while (isdigit(*f)) {
++f;
++direc_length;
}
+ }
if (*f == '.') {
++f;
++direc_length;
++f;
++direc_length;
if (argc > 0) {
- precision = xstrtoul(*argv);
+ precision = my_xstrtoul(*argv);
++argv;
--argc;
} else
precision = 0;
} else
- while (ISDIGIT(*f)) {
+ while (isdigit(*f)) {
++f;
++direc_length;
}
++f;
++direc_length;
}
- /*
- if (!strchr ("diouxXfeEgGcs", *f))
- fprintf(stderr, "%%%c: invalid directive", *f);
- */
+ /*
+ if (!strchr ("diouxXfeEgGcs", *f))
+ fprintf(stderr, "%%%c: invalid directive", *f);
+ */
++direc_length;
if (argc > 0) {
print_direc(direc_start, direc_length, field_width,
print_direc(direc_start, direc_length, field_width,
precision, "");
break;
-
case '\\':
- f += print_esc(f);
+ if (*++f == 'c')
+ exit(0);
+ putchar(bb_process_escape_sequence((const char **)&f));
+ f--;
break;
-
default:
putchar(*f);
}
return save_argc - argc;
}
-/* Print a \ escape sequence starting at ESCSTART.
- Return the number of characters in the escape sequence
- besides the backslash. */
-
-static int print_esc(char *escstart)
-{
- register char *p = escstart + 1;
- int esc_value = 0; /* Value of \nnn escape. */
- int esc_length; /* Length of \nnn escape. */
-
- /* \0ooo and \xhhh escapes have maximum length of 3 chars. */
- if (*p == 'x') {
- for (esc_length = 0, ++p;
- esc_length < 3 && ISXDIGIT(*p); ++esc_length, ++p)
- esc_value = esc_value * 16 + hextobin(*p);
-/* if (esc_length == 0)
- fprintf(stderr, "missing hex in esc");
-*/
- putchar(esc_value);
- } else if (*p == '0') {
- for (esc_length = 0, ++p;
- esc_length < 3 && isodigit(*p); ++esc_length, ++p)
- esc_value = esc_value * 8 + octtobin(*p);
- putchar(esc_value);
- } else if (strchr("\"\\abcfnrtv", *p))
- print_esc_char(*p++);
-/* else
- fprintf(stderr, "\\%c: invalid esc", *p);
-*/
- return p - escstart - 1;
-}
-
-/* Output a single-character \ escape. */
-
-static void print_esc_char(int c)
-{
- switch (c) {
- case 'a': /* Alert. */
- putchar(7);
- break;
- case 'b': /* Backspace. */
- putchar(8);
- break;
- case 'c': /* Cancel the rest of the output. */
- exit(0);
- break;
- case 'f': /* Form feed. */
- putchar(12);
- break;
- case 'n': /* New line. */
- putchar(10);
- break;
- case 'r': /* Carriage return. */
- putchar(13);
- break;
- case 't': /* Horizontal tab. */
- putchar(9);
- break;
- case 'v': /* Vertical tab. */
- putchar(11);
- break;
- default:
- putchar(c);
- break;
- }
-}
-
-/* Print string STR, evaluating \ escapes. */
-
-static void print_esc_string(char *str)
-{
- for (; *str; str++)
- if (*str == '\\')
- str += print_esc(str);
- else
- putchar(*str);
-}
-
-static void
-print_direc(char *start, size_t length, int field_width, int precision,
- char *argument)
+int printf_main(int argc, char **argv);
+int printf_main(int argc, char **argv)
{
- char *p; /* Null-terminated copy of % directive. */
-
- p = xmalloc((unsigned) (length + 1));
- strncpy(p, start, length);
- p[length] = 0;
-
- switch (p[length - 1]) {
- case 'd':
- case 'i':
- if (field_width < 0) {
- if (precision < 0)
- printf(p, xstrtol(argument));
- else
- printf(p, precision, xstrtol(argument));
- } else {
- if (precision < 0)
- printf(p, field_width, xstrtol(argument));
- else
- printf(p, field_width, precision, xstrtol(argument));
- }
- break;
-
- case 'o':
- case 'u':
- case 'x':
- case 'X':
- if (field_width < 0) {
- if (precision < 0)
- printf(p, xstrtoul(argument));
- else
- printf(p, precision, xstrtoul(argument));
- } else {
- if (precision < 0)
- printf(p, field_width, xstrtoul(argument));
- else
- printf(p, field_width, precision, xstrtoul(argument));
- }
- break;
-
- case 'f':
- case 'e':
- case 'E':
- case 'g':
- case 'G':
- if (field_width < 0) {
- if (precision < 0)
- printf(p, xstrtod(argument));
- else
- printf(p, precision, xstrtod(argument));
- } else {
- if (precision < 0)
- printf(p, field_width, xstrtod(argument));
- else
- printf(p, field_width, precision, xstrtod(argument));
- }
- break;
-
- case 'c':
- printf(p, *argument);
- break;
+ char *format;
+ int args_used;
- case 's':
- if (field_width < 0) {
- if (precision < 0)
- printf(p, argument);
- else
- printf(p, precision, argument);
- } else {
- if (precision < 0)
- printf(p, field_width, argument);
- else
- printf(p, field_width, precision, argument);
- }
- break;
+ if (argc <= 1 || argv[1][0] == '-') {
+ bb_show_usage();
}
- free(p);
-}
-
-static unsigned long xstrtoul(char *s)
-{
- char *end;
- unsigned long val;
-
- errno = 0;
- val = strtoul(s, &end, 0);
- verify(s, end);
- return val;
-}
-
-static long xstrtol(char *s)
-{
- char *end;
- long val;
-
- errno = 0;
- val = strtol(s, &end, 0);
- verify(s, end);
- return val;
-}
+ format = argv[1];
+ argc -= 2;
+ argv += 2;
-static double xstrtod(char *s)
-{
- char *end;
- double val;
+ do {
+ args_used = print_formatted(format, argc, argv);
+ argc -= args_used;
+ argv += args_used;
+ } while (args_used > 0 && argc > 0);
- errno = 0;
- val = strtod(s, &end);
- verify(s, end);
- return val;
-}
+/* if (argc > 0)
+ fprintf(stderr, "excess args ignored");
+*/
-static void verify(char *s, char *end)
-{
- if (errno) {
- fprintf(stderr, "%s", s);
- exit_status = 1;
- } else if (*end) {
- /*
- if (s == end)
- fprintf(stderr, "%s: expected numeric", s);
- else
- fprintf(stderr, "%s: not completely converted", s);
- */
- exit_status = 1;
- }
+ return EXIT_SUCCESS;
}
projects / oweals / busybox.git / blobdiff