+/* 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...]
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')
-
-char *xmalloc ();
-
-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;
-
-const char printf_usage[] = "printf format [argument...]\n";
-
-int
-printf_main(int argc, char** argv)
-{
- char *format;
- int args_used;
-
- exit_status = 0;
- if ( **(argv+1) == '-' ) {
- usage (printf_usage);
- }
-
- format = argv[1];
- argc -= 2;
- argv += 2;
-
- do
- {
- args_used = print_formatted (format, argc, argv);
- argc -= args_used;
- argv += args_used;
- }
- while (args_used > 0 && argc > 0);
+#include <assert.h>
+#include "busybox.h"
-/*
- if (argc > 0)
- fprintf(stderr, "excess args ignored");
-*/
+static int print_formatted (char *format, int argc, char **argv);
+static void print_direc (char *start, size_t length,
+ int field_width, int precision, char *argument);
- exit (exit_status);
-}
-
-/* Print the text in FORMAT, using ARGV (with ARGC elements) for
- arguments to any `%' directives.
- Return the number of elements of ARGV used. */
-
-static int
-print_formatted (char *format, int argc, char **argv)
+typedef int (*converter)(char *arg, void *result);
+static void multiconvert(char *arg, void *result, converter convert)
{
- 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)
- {
- case '%':
- direc_start = f++;
- direc_length = 1;
- field_width = precision = -1;
- if (*f == '%')
- {
- putchar ('%');
- break;
- }
- if (*f == 'b')
- {
- if (argc > 0)
- {
- print_esc_string (*argv);
- ++argv;
- --argc;
- }
- break;
- }
- if (strchr ("-+ #", *f))
- {
- ++f;
- ++direc_length;
- }
- if (*f == '*')
- {
- ++f;
- ++direc_length;
- if (argc > 0)
- {
- field_width = xstrtoul (*argv);
- ++argv;
- --argc;
- }
- else
- field_width = 0;
- }
- else
- while (ISDIGIT (*f))
- {
- ++f;
- ++direc_length;
- }
- if (*f == '.')
- {
- ++f;
- ++direc_length;
- if (*f == '*')
- {
- ++f;
- ++direc_length;
- if (argc > 0)
- {
- precision = xstrtoul (*argv);
- ++argv;
- --argc;
- }
- else
- precision = 0;
- }
- else
- while (ISDIGIT (*f))
- {
- ++f;
- ++direc_length;
- }
- }
- if (*f == 'l' || *f == 'L' || *f == 'h')
- {
- ++f;
- ++direc_length;
- }
- /*
- if (!strchr ("diouxXfeEgGcs", *f))
- fprintf(stderr, "%%%c: invalid directive", *f);
- */
- ++direc_length;
- if (argc > 0)
- {
- print_direc (direc_start, direc_length, field_width,
- precision, *argv);
- ++argv;
- --argc;
- }
- else
- print_direc (direc_start, direc_length, field_width,
- precision, "");
- break;
-
- case '\\':
- f += print_esc (f);
- break;
-
- default:
- putchar (*f);
+ char s[16];
+ if (*arg == '"' || *arg == '\'') {
+ sprintf(s,"%d",(unsigned)*(++arg));
+ arg=s;
}
- }
-
- return save_argc - argc;
+ if(convert(arg,result)) fprintf(stderr, "%s", arg);
}
-/* 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)
+static unsigned long xstrtoul(char *arg)
{
- 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;
-}
+ unsigned long result;
-/* Output a single-character \ escape. */
+ multiconvert(arg,&result, (converter)safe_strtoul);
+ return result;
+}
-static void
-print_esc_char (int c)
+static long xstrtol(char *arg)
{
- 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;
- }
+ long result;
+ multiconvert(arg, &result, (converter)safe_strtol);
+ return result;
}
-/* Print string STR, evaluating \ escapes. */
-
-static void
-print_esc_string (char *str)
+static double xstrtod(char *arg)
{
- for (; *str; str++)
- if (*str == '\\')
- str += print_esc (str);
- else
- putchar (*str);
+ double result;
+ multiconvert(arg, &result, (converter)safe_strtod);
+ return result;
}
-static void
-print_direc (char *start, size_t length, int field_width, int precision, char *argument)
+static void print_esc_string(char *str)
{
- 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;
-
- 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;
- }
+ for (; *str; str++) {
+ if (*str == '\\') {
+ str++;
+ putchar(bb_process_escape_sequence((const char **)&str));
+ } else {
+ putchar(*str);
+ }
- free (p);
+ }
}
-static unsigned long
-xstrtoul (char *s)
+int printf_main(int argc, char **argv)
{
- char *end;
- unsigned long val;
+ char *format;
+ int args_used;
- errno = 0;
- val = strtoul (s, &end, 0);
- verify (s, end);
- return val;
-}
+ if (argc <= 1 || **(argv + 1) == '-') {
+ bb_show_usage();
+ }
-static long
-xstrtol (char *s)
-{
- char *end;
- long val;
+ format = argv[1];
+ argc -= 2;
+ argv += 2;
+
+ 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");
+*/
- errno = 0;
- val = strtol (s, &end, 0);
- verify (s, end);
- return val;
+ return EXIT_SUCCESS;
}
-static double
-xstrtod (char *s)
+/* Print the text in FORMAT, using ARGV (with ARGC elements) for
+ arguments to any `%' directives.
+ Return the number of elements of ARGV used. */
+
+static int print_formatted(char *format, int argc, char **argv)
{
- char *end;
- double val;
+ 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) {
+ case '%':
+ direc_start = f++;
+ direc_length = 1;
+ field_width = precision = -1;
+ if (*f == '%') {
+ putchar('%');
+ break;
+ }
+ if (*f == 'b') {
+ if (argc > 0) {
+ print_esc_string(*argv);
+ ++argv;
+ --argc;
+ }
+ break;
+ }
+ if (strchr("-+ #", *f)) {
+ ++f;
+ ++direc_length;
+ }
+ if (*f == '*') {
+ ++f;
+ ++direc_length;
+ if (argc > 0) {
+ field_width = xstrtoul(*argv);
+ ++argv;
+ --argc;
+ } else
+ field_width = 0;
+ } else
+ while (isdigit(*f)) {
+ ++f;
+ ++direc_length;
+ }
+ if (*f == '.') {
+ ++f;
+ ++direc_length;
+ if (*f == '*') {
+ ++f;
+ ++direc_length;
+ if (argc > 0) {
+ precision = xstrtoul(*argv);
+ ++argv;
+ --argc;
+ } else
+ precision = 0;
+ } else
+ while (isdigit(*f)) {
+ ++f;
+ ++direc_length;
+ }
+ }
+ if (*f == 'l' || *f == 'L' || *f == 'h') {
+ ++f;
+ ++direc_length;
+ }
+ /*
+ if (!strchr ("diouxXfeEgGcs", *f))
+ fprintf(stderr, "%%%c: invalid directive", *f);
+ */
+ ++direc_length;
+ if (argc > 0) {
+ print_direc(direc_start, direc_length, field_width,
+ precision, *argv);
+ ++argv;
+ --argc;
+ } else
+ print_direc(direc_start, direc_length, field_width,
+ precision, "");
+ break;
+
+ case '\\':
+ if (*++f == 'c')
+ exit(0);
+ putchar(bb_process_escape_sequence((const char **)&f));
+ f--;
+ break;
+
+ default:
+ putchar(*f);
+ }
+ }
- errno = 0;
- val = strtod (s, &end);
- verify (s, end);
- return val;
+ return save_argc - argc;
}
static void
-verify (char *s, char *end)
+print_direc(char *start, size_t length, int field_width, int precision,
+ char *argument)
{
- 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;
- }
-}
+ 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;
+
+ 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;
+ }
+ free(p);
+}