/* bucomm.c -- Bin Utils COMmon code.
   Copyright (C) 1991, 92, 93, 94, 95, 1997 Free Software Foundation, Inc.

   This file is part of GNU Binutils.

   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 of the License, 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.  */

/* We might put this in a library someday so it could be dynamically
   loaded, but for now it's not necessary.  */

#include "bfd.h"
#include "libiberty.h"
#include "bucomm.h"

#include <sys/stat.h>
#include <time.h>		/* ctime, maybe time_t */

#ifndef HAVE_TIME_T_IN_TIME_H
#ifndef HAVE_TIME_T_IN_TYPES_H
typedef long time_t;
#endif
#endif

#ifdef ANSI_PROTOTYPES
#include <stdarg.h>
#else
#include <varargs.h>
#endif

/* Error reporting */

char *program_name;

void
bfd_nonfatal (string)
     CONST char *string;
{
  CONST char *errmsg = bfd_errmsg (bfd_get_error ());

  if (string)
    fprintf (stderr, "%s: %s: %s\n", program_name, string, errmsg);
  else
    fprintf (stderr, "%s: %s\n", program_name, errmsg);
}

void
bfd_fatal (string)
     CONST char *string;
{
  bfd_nonfatal (string);
  xexit (1);
}

#ifdef ANSI_PROTOTYPES
void
fatal (const char *format, ...)
{
  va_list args;

  fprintf (stderr, "%s: ", program_name);
  va_start (args, format);
  vfprintf (stderr, format, args);
  va_end (args);
  putc ('\n', stderr);
  xexit (1);
}
#else
void 
fatal (va_alist)
     va_dcl
{
  char *Format;
  va_list args;

  fprintf (stderr, "%s: ", program_name);
  va_start (args);
  Format = va_arg (args, char *);
  vfprintf (stderr, Format, args);
  va_end (args);
  putc ('\n', stderr);
  xexit (1);
}
#endif

/* Set the default BFD target based on the configured target.  Doing
   this permits the binutils to be configured for a particular target,
   and linked against a shared BFD library which was configured for a
   different target.  */

void
set_default_bfd_target ()
{
  /* The macro TARGET is defined by Makefile.  */
  const char *target = TARGET;

  if (! bfd_set_default_target (target))
    {
      char *errmsg;

      errmsg = (char *) xmalloc (100 + strlen (target));
      sprintf (errmsg, "can't set BFD default target to `%s'", target);
      bfd_fatal (errmsg);
    }
}

/* After a false return from bfd_check_format_matches with
   bfd_get_error () == bfd_error_file_ambiguously_recognized, print
   the possible matching targets.  */

void
list_matching_formats (p)
     char **p;
{
  fprintf(stderr, "%s: Matching formats:", program_name);
  while (*p)
    fprintf(stderr, " %s", *p++);
  fprintf(stderr, "\n");
}

/* List the supported targets.  */

void
list_supported_targets (name, f)
     const char *name;
     FILE *f;
{
  extern bfd_target *bfd_target_vector[];
  int t;

  if (name == NULL)
    fprintf (f, "Supported targets:");
  else
    fprintf (f, "%s: supported targets:", name);
  for (t = 0; bfd_target_vector[t] != NULL; t++)
    fprintf (f, " %s", bfd_target_vector[t]->name);
  fprintf (f, "\n");
}

/* Display the archive header for an element as if it were an ls -l listing:

   Mode       User\tGroup\tSize\tDate               Name */

void
print_arelt_descr (file, abfd, verbose)
     FILE *file;
     bfd *abfd;
     boolean verbose;
{
  struct stat buf;

  if (verbose)
    {
      if (bfd_stat_arch_elt (abfd, &buf) == 0)
	{
	  char modebuf[11];
	  char timebuf[40];
	  time_t when = buf.st_mtime;
	  CONST char *ctime_result = (CONST char *) ctime (&when);

	  /* POSIX format:  skip weekday and seconds from ctime output.  */
	  sprintf (timebuf, "%.12s %.4s", ctime_result + 4, ctime_result + 20);

	  mode_string (buf.st_mode, modebuf);
	  modebuf[10] = '\0';
	  /* POSIX 1003.2/D11 says to skip first character (entry type).  */
	  fprintf (file, "%s %ld/%ld %6ld %s ", modebuf + 1,
		   (long) buf.st_uid, (long) buf.st_gid,
		   (long) buf.st_size, timebuf);
	}
    }

  fprintf (file, "%s\n", bfd_get_filename (abfd));
}

/* Return the name of a temporary file in the same directory as FILENAME.  */

char *
make_tempname (filename)
     char *filename;
{
  static char template[] = "stXXXXXX";
  char *tmpname;
  char *slash = strrchr (filename, '/');

#if defined (__DJGPP__) || defined (__GO32__) || defined (_WIN32)
  if (slash == NULL)
    slash = strrchr (filename, '\\');
#endif

  if (slash != (char *) NULL)
    {
      char c;

      c = *slash;
      *slash = 0;
      tmpname = xmalloc (strlen (filename) + sizeof (template) + 1);
      strcpy (tmpname, filename);
      strcat (tmpname, "/");
      strcat (tmpname, template);
      mktemp (tmpname);
      *slash = c;
    }
  else
    {
      tmpname = xmalloc (sizeof (template));
      strcpy (tmpname, template);
      mktemp (tmpname);
    }
  return tmpname;
}

/* Parse a string into a VMA, with a fatal error if it can't be
   parsed.  */

bfd_vma
parse_vma (s, arg)
     const char *s;
     const char *arg;
{
  bfd_vma ret;
  const char *end;

  ret = bfd_scan_vma (s, &end, 0);
  if (*end != '\0')
    {
      fprintf (stderr, "%s: %s: bad number: %s\n", program_name, arg, s);
      exit (1);
    }
  return ret;
}