diff options
author | Eric Andersen <andersen@codepoet.org> | 2001-10-24 09:00:29 +0400 |
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committer | Eric Andersen <andersen@codepoet.org> | 2001-10-24 09:00:29 +0400 |
commit | bdfd0d78bc44e73d693510e70087857785b3b521 (patch) | |
tree | 153a573095afac8d8d0ea857759ecabd77fb28b7 /printf.c | |
parent | 9260fc5552a3ee52eb95823aa6689d52a1ffd33c (diff) |
Major rework of the directory structure and the entire build system.
-Erik
Diffstat (limited to 'printf.c')
-rw-r--r-- | printf.c | 455 |
1 files changed, 0 insertions, 455 deletions
diff --git a/printf.c b/printf.c deleted file mode 100644 index d579a9b4e..000000000 --- a/printf.c +++ /dev/null @@ -1,455 +0,0 @@ -/* 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. - - 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. */ - -/* Usage: printf format [argument...] - - A front end to the printf function that lets it be used from the shell. - - Backslash escapes: - - \" = double quote - \\ = backslash - \a = alert (bell) - \b = backspace - \c = produce no further output - \f = form feed - \n = new line - \r = carriage return - \t = horizontal tab - \v = vertical tab - \0ooo = octal number (ooo is 0 to 3 digits) - \xhhh = hexadecimal number (hhh is 1 to 3 digits) - - Additional directive: - - %b = print an argument string, interpreting backslash escapes - - 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 <unistd.h> -#include <stdio.h> -#include <sys/types.h> -#include <string.h> -#include <errno.h> -#include <stdlib.h> -#include <fcntl.h> -#include <ctype.h> -#include "busybox.h" - - -#ifndef S_IFMT -static const int 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 - -#define ISXDIGIT(c) (IN_CTYPE_DOMAIN (c) && isxdigit (c)) -#define ISDIGIT_LOCALE(c) (IN_CTYPE_DOMAIN (c) && isdigit (c)) -#define ISDIGIT(c) (((unsigned char) (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; - -int printf_main(int argc, char **argv) -{ - char *format; - int args_used; - - exit_status = 0; - if (argc <= 1 || **(argv + 1) == '-') { - show_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); - -/* - if (argc > 0) - fprintf(stderr, "excess args ignored"); -*/ - - return(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) -{ - 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); - } - } - - 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) -{ - 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); -} - -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; -} - -static double xstrtod(char *s) -{ - char *end; - double val; - - errno = 0; - val = strtod(s, &end); - verify(s, end); - return val; -} - -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; - } -} |