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/* This file is error.c - library for message and error reporting */
/* ifile - intelligent mail filter for EXMH/MH
Copyright (C) 1997 Jason Rennie <jrennie@ai.mit.edu>
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.
*/
#include <stdarg.h> /* va_start(), va_end(), va_list */
#include <stdio.h> /* fopen(), fclose() */
#include <stdlib.h>
#include <string.h>
#include <errno.h> /* required by SunOS 5.5.1/gcc-2.7.2 for errno var */
#include <time.h> /* for srand(time(NULL)) call */
#include <sys/stat.h> /* for chmod() call */
#include <ifile.h>
extern arguments args;
FILE * INFO;
/* Returns a newly allocated character array which contains the
portion of FULL_PATH postceeding the last '/' in FULL_PATH,
or the entire string if FULL_PATH contains no '/' characters */
/* written by Jason Rennie <jrennie@ai.mit.edu> for ifile */
char *
ifile_strip_path (char * full_path)
{
char buf[MAX_STR_LEN];
int buf_index = 0; /* index of last character in BUF */
int full_path_index = 0; /* index of current character in FULL_PATH */
char * executable_name; /* pointer to string to be returned */
while (full_path[full_path_index])
{
buf[buf_index++] = full_path[full_path_index++];
if (full_path[full_path_index] == '/')
{
buf_index = 0;
full_path_index++;
}
}
buf[buf_index] = '\0';
executable_name = malloc(strlen(buf)+1);
strcpy(executable_name, buf);
return executable_name;
}
/* Opens info log file to report information/errors (if requested) */
/* Written by Jason Rennie <jrennie@ai.mit.edu> for ifile */
FILE *
ifile_open_log (int argc, char ** argv)
{
char *info_file;
/* if no temp file is to be created, immediately return */
if (!args.tmp_file) return NULL;
srand(time(NULL));
/* Create string with full path for ~/.ifile_log */
info_file = ifile_sprintf("%s/.ifile.log", getenv("HOME"));
if ((INFO = fopen(info_file, "w")))
{
chmod(info_file, 0600);
ifile_verbosify(ifile_progress, "%s called\n", IFILE_VERSION);
ifile_verbosify(ifile_verbose, "Successfully opened log file: %s\n",
info_file);
return INFO;
}
else
{
ifile_verbosify(ifile_quiet, "Not able to open log file: %s Error: %d\n", info_file, errno);
return NULL;
}
}
/* Closes info log file if necessary */
/* Written by Jason Rennie <jrennie@ai.mit.edu> for ifile */
void
ifile_close_log ()
{
if (!args.tmp_file) return;
fclose(INFO);
ifile_verbosify(ifile_verbose, "Closed log file.\n");
}
/* Print the printf-style FORMAT string and arguments on STDERR, only if
ARGS->VERBOSITY is equal or greater than the argument VERBOSITY_LEVEL. */
/* Written by Jason Rennie <jrennie@ai.mit.edu> for ifile
adapted from bow_verbosify() - written by Andrew Kachites McCallum */
int
ifile_verbosify (int verbosity_level, const char *format, ...)
{
int ret = 0;
va_list ap;
/* The following few lines makes it possible to see the priority
levels of the various lines of output */
if (verbosity_level <= args.verbosity)
{
va_start (ap, format);
ret = vfprintf (stderr, format, ap);
va_end (ap);
}
fflush (stderr);
if ((verbosity_level <= args.verbosity) ||
(verbosity_level <= ifile_progress))
{
va_start (ap, format);
if (INFO != NULL) vfprintf (INFO, format, ap);
va_end (ap);
}
if (INFO != NULL) fflush (INFO);
return ret;
}
/* Reports an error in printf style format and halts the program */
/* strerror() is currently not used to report errors because Sun machines
will not compile the function for some reason */
/* Written by Jason Rennie <jrennie@ai.mit.edu> for ifile
adapted from bow_error() - written by Andrew Kachites McCallum */
void
ifile_error (const char *format, ...)
{
va_list ap;
va_start (ap, format);
if (INFO) vfprintf (INFO, format, ap);
va_end (ap);
/* fprintf("Error: %s\n", strerror(errno)); */
va_start (ap, format);
vfprintf (stderr, format, ap);
va_end (ap);
/* fprintf(stderr, "Error: %s\n\n", strerror(errno)); */
ifile_close_log(INFO);
exit (-1);
}
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