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/*
* Copyright (C) 1998-2000 Byrial Jensen <byrial@image.dk>
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <stdarg.h>
#include <limits.h>
#include <unistd.h>
#include <sys/stat.h>
#include "lib.h"
void *nb_realloc (void *ptr, size_t size)
{
if (!ptr)
return nb_malloc (size);
ptr = realloc (ptr, size);
if (!ptr && size )
nb_error (0, _("could not allocate memory"));
return ptr;
}
void *nb_malloc (size_t size)
{
void *p = malloc (size);
if (!p)
nb_error (0, _("could not allocate memory"));
return p;
}
char *read_line (char *line, size_t *len, FILE *file)
{
char *buf;
size_t offset;
if (*len < 256 || line == NULL)
{
line = nb_realloc (line, 1024);
*len = 1024;
}
buf = line;
offset = 0;
while (1)
{
if (fgets (buf, *len - offset, file) == NULL)
{
if (ferror (file))
nb_error (E_ERRNO, _("reading file"));
free (line);
*len = 0;
return NULL;
}
buf += strlen (buf);
if (*(buf- 1) == '\n')
return line; /* We got a full line */
offset = buf - line;
if (*len < offset + 256)
{
/* grow the buffer */
*len += 1024;
line = nb_realloc (line, *len);
buf = line + offset;
}
}
}
void write_line (char *line, FILE *file)
{
if (fputs (line, file) == EOF)
nb_error (E_ERRNO, _("writing file"));
}
FILE *open_read (const char *filename)
{
FILE *fp = fopen (filename, "r");
if (!fp)
nb_error (E_ERRNO, _("open %s for reading"), filename);
return fp;
}
FILE *open_write (const char *filename)
{
FILE *fp = fopen (filename, "w");
if (!fp)
nb_error (E_ERRNO, _("open %s for writing"), filename);
return fp;
}
void nb_close (FILE *file)
{
if (fclose (file))
nb_error (E_ERRNO, _("closing file"));
}
char *nb_tmpnam ()
{
#ifdef HAVE_MKSTEMP
char *name = nb_malloc (_POSIX_PATH_MAX);
strcpy (name, "/tmp/newsbodyXXXXXX");
if (mkstemp(name) == -1) {
nb_error (E_ERRNO, _("making temporary filename"));
return name;
}
#else
char *name = tmpnam (nb_malloc (_POSIX_PATH_MAX));
if (!name)
nb_error (E_ERRNO, _("making temporary filename"));
#endif
return name;
}
void nb_unlink (const char *filename)
{
if (unlink (filename) == -1)
nb_error (E_ERRNO, _("unlink %s"), filename);
}
void nb_rename (const char *oldpath, const char *newpath)
{
if (rename (oldpath, newpath) == 0)
return;
if (errno != EXDEV)
nb_error (E_ERRNO, _("rename %s %s"), oldpath, newpath);
/* The files are not on the same filesystem so we need to copy it */
{
FILE *in = open_read (oldpath);
FILE *out = open_write (newpath);
struct stat stat;
char *buf;
size_t blocksize;
size_t size;
size_t chunk;
if (fstat (fileno (in), &stat))
nb_error (E_ERRNO, _("stat %s"), newpath);
size = stat.st_size;
blocksize = stat.st_blksize;
buf = nb_malloc (blocksize);
while (size > 0)
{
chunk = (size > blocksize) ? blocksize : size;
if (fread (buf, 1, chunk, in) != chunk)
nb_error (E_ERRNO, _("read from %s"), oldpath);
if (fwrite (buf, 1, chunk, out) != chunk)
nb_error (E_ERRNO, _("write to %s"), newpath);
size -= chunk;
}
free (buf);
nb_unlink (oldpath);
}
}
static void dump_stack ()
{
#if 0
char s[160];
sprintf (s,
"/bin/echo \"attach %d\\nwhere\\ndetach\\nquit\\n\" |"
"gdb -silent %s",
getpid(), Name);
system (s);
putchar ('\n');
#endif
}
void nb_error (int flags, char *format, ...)
{
va_list ap;
int saved_errno = errno;
fprintf (stderr, "%s: %s: ", Name, (flags & E_CHILD)
? _("error in child process") : _("error"));
va_start (ap, format);
vfprintf (stderr, format, ap);
va_end (ap);
if (flags & E_ERRNO)
{
#ifdef HAVE_STRERROR
fprintf (stderr, ": %s", strerror (saved_errno));
#else
fprintf (stderr, _(", errno = %d"), saved_errno);
#endif
}
fputs (".\n", stderr);
dump_stack ();
if (flags & E_CHILD)
_exit (128);
else
exit (1);
}
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