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-rw-r--r--printf.c531
1 files changed, 531 insertions, 0 deletions
diff --git a/printf.c b/printf.c
new file mode 100644
index 0000000..e79843c
--- /dev/null
+++ b/printf.c
@@ -0,0 +1,531 @@
+// I may still need some more cleaning...fix my error checking
+
+#include "internal.h"
+#ifdef BB_PRINTF
+
+/* 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 <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[] = "Usage: printf format [argument...]\n";
+
+int
+printf_main(struct FileInfo * i, int argc, char * * argv)
+{
+ char *format;
+ int args_used;
+
+ exit_status = 0;
+
+ 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");
+*/
+
+ 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)
+{
+ 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;
+ }
+}
+
+#endif
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