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/* bucomm.c -- Bin Utils COMmon code.

   Copyright 1991, 1992, 1993, 1994, 1995, 1997, 1998, 2000, 2001, 2002, 2003

   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 "bfdver.h"

#include "libiberty.h"

#include "bucomm.h"

#include "filenames.h"

#include "libbfd.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

static const char * endian_string PARAMS ((enum bfd_endian));

static int display_target_list PARAMS ((void));

static int display_info_table PARAMS ((int, int));

static int display_target_tables PARAMS ((void));

/* 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);

}

void

report (format, args)

     const char * format;

     va_list args;

{

  fprintf (stderr, "%s: ", program_name);

  vfprintf (stderr, format, args);

  putc ('\n', stderr);

}

void

fatal VPARAMS ((const char *format, ...))

{

  VA_OPEN (args, format);

  VA_FIXEDARG (args, const char *, format);

  report (format, args);

  VA_CLOSE (args);

  xexit (1);

}

void

non_fatal VPARAMS ((const char *format, ...))

{

  VA_OPEN (args, format);

  VA_FIXEDARG (args, const char *, format);

  report (format, args);

  VA_CLOSE (args);

}

/* 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))

    fatal ("can't set BFD default target to `%s': %s",

           target, bfd_errmsg (bfd_get_error ()));

}

/* 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++);

  fputc ('\n', stderr);

}

/* List the supported targets.  */

void

list_supported_targets (name, f)

     const char *name;

     FILE *f;

{

  int t;

  const char **targ_names = bfd_target_list ();

  if (name == NULL)

    fprintf (f, "Supported targets:");

  else

    fprintf (f, "%s: supported targets:", name);

  for (t = 0; targ_names[t] != NULL; t++)

    fprintf (f, " %s", targ_names[t]);

  fprintf (f, "\n");

  free (targ_names);

}

/* List the supported architectures.  */

void

list_supported_architectures (name, f)

     const char *name;

     FILE *f;

{

  const char **arch;

  if (name == NULL)

    fprintf (f, "Supported architectures:");

  else

    fprintf (f, "%s: supported architectures:", name);

  for (arch = bfd_arch_list (); *arch; arch++)

    fprintf (f, " %s", *arch);

  fprintf (f, "\n");

}

/* The length of the longest architecture name + 1.  */

#define LONGEST_ARCH sizeof ("powerpc:common")

static const char *

endian_string (endian)

     enum bfd_endian endian;

{

  switch (endian)

    {

    case BFD_ENDIAN_BIG: return "big endian";

    case BFD_ENDIAN_LITTLE: return "little endian";

    default: return "endianness unknown";

    }

}

/* List the targets that BFD is configured to support, each followed

   by its endianness and the architectures it supports.  */

static int

display_target_list ()

{

  char *dummy_name;

  int t;

  int ret = 1;

  dummy_name = make_temp_file (NULL);

  for (t = 0; bfd_target_vector[t]; t++)

    {

      const bfd_target *p = bfd_target_vector[t];

      bfd *abfd = bfd_openw (dummy_name, p->name);

      int a;

      printf ("%s\n (header %s, data %s)\n", p->name,

              endian_string (p->header_byteorder),

              endian_string (p->byteorder));

      if (abfd == NULL)

        {

          bfd_nonfatal (dummy_name);

          ret = 0;

          continue;

        }

      if (! bfd_set_format (abfd, bfd_object))

        {

          if (bfd_get_error () != bfd_error_invalid_operation)

            {

              bfd_nonfatal (p->name);

              ret = 0;

            }

          bfd_close_all_done (abfd);

          continue;

        }

      for (a = (int) bfd_arch_obscure + 1; a < (int) bfd_arch_last; a++)

        if (bfd_set_arch_mach (abfd, (enum bfd_architecture) a, 0))

          printf ("  %s\n",

                  bfd_printable_arch_mach ((enum bfd_architecture) a, 0));

      bfd_close_all_done (abfd);

    }

  unlink (dummy_name);

  free (dummy_name);

  return ret;

}

/* Print a table showing which architectures are supported for entries

   FIRST through LAST-1 of bfd_target_vector (targets across,

   architectures down).  */

static int

display_info_table (first, last)

     int first;

     int last;

{

  int t;

  int a;

  int ret = 1;

  char *dummy_name;

  /* Print heading of target names.  */

  printf ("\n%*s", (int) LONGEST_ARCH, " ");

  for (t = first; t < last && bfd_target_vector[t]; t++)

    printf ("%s ", bfd_target_vector[t]->name);

  putchar ('\n');

  dummy_name = make_temp_file (NULL);

  for (a = (int) bfd_arch_obscure + 1; a < (int) bfd_arch_last; a++)

    if (strcmp (bfd_printable_arch_mach (a, 0), "UNKNOWN!") != 0)

      {

        printf ("%*s ", (int) LONGEST_ARCH - 1,

                bfd_printable_arch_mach (a, 0));

        for (t = first; t < last && bfd_target_vector[t]; t++)

          {

            const bfd_target *p = bfd_target_vector[t];

            bfd_boolean ok = TRUE;

            bfd *abfd = bfd_openw (dummy_name, p->name);

            if (abfd == NULL)

              {

                bfd_nonfatal (p->name);

                ret = 0;

                ok = FALSE;

              }

            if (ok)

              {

                if (! bfd_set_format (abfd, bfd_object))

                  {

                    if (bfd_get_error () != bfd_error_invalid_operation)

                      {

                        bfd_nonfatal (p->name);

                        ret = 0;

                      }

                    ok = FALSE;

                  }

              }

            if (ok)

              {

                if (! bfd_set_arch_mach (abfd, a, 0))

                  ok = FALSE;

              }

            if (ok)

              printf ("%s ", p->name);

            else

              {

                int l = strlen (p->name);

                while (l--)

                  putchar ('-');

                putchar (' ');

              }

            if (abfd != NULL)

              bfd_close_all_done (abfd);

          }

        putchar ('\n');

      }

  unlink (dummy_name);

  free (dummy_name);

  return ret;

}

/* Print tables of all the target-architecture combinations that

   BFD has been configured to support.  */

static int

display_target_tables ()

{

  int t;

  int columns;

  int ret = 1;

  char *colum;

  columns = 0;

  colum = getenv ("COLUMNS");

  if (colum != NULL)

    columns = atoi (colum);

  if (columns == 0)

    columns = 80;

  t = 0;

  while (bfd_target_vector[t] != NULL)

    {

      int oldt = t, wid;

      wid = LONGEST_ARCH + strlen (bfd_target_vector[t]->name) + 1;

      ++t;

      while (wid < columns && bfd_target_vector[t] != NULL)

        {

          int newwid;

          newwid = wid + strlen (bfd_target_vector[t]->name) + 1;

          if (newwid >= columns)

            break;

          wid = newwid;

          ++t;

        }

      if (! display_info_table (oldt, t))

        ret = 0;

    }

  return ret;

}

int

display_info ()

{

  printf ("BFD header file version %s\n", BFD_VERSION_STRING);

  if (! display_target_list () || ! display_target_tables ())

    return 1;

  else

    return 0;

}

/* 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;

     bfd_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, '/');

#ifdef HAVE_DOS_BASED_FILE_SYSTEM

  {

    /* We could have foo/bar\\baz, or foo\\bar, or d:bar.  */

    char *bslash = strrchr (filename, '\\');

    if (slash == NULL || (bslash != NULL && bslash > slash))

      slash = bslash;

    if (slash == NULL && filename[0] != '\0' && filename[1] == ':')

      slash = filename + 1;

  }

#endif

  if (slash != (char *) NULL)

    {

      char c;

      c = *slash;

      *slash = 0;

      tmpname = xmalloc (strlen (filename) + sizeof (template) + 2);

      strcpy (tmpname, filename);

#ifdef HAVE_DOS_BASED_FILE_SYSTEM

      /* If tmpname is "X:", appending a slash will make it a root

         directory on drive X, which is NOT the same as the current

         directory on drive X.  */

      if (tmpname[1] == ':' && tmpname[2] == '\0')

        strcat (tmpname, ".");

#endif

      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')

    fatal ("%s: bad number: %s", arg, s);

  return ret;

}