Initial revision0_29alpha2

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