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/* error.c
Copyright (C) 2005,2006,2007 Eugene K. Ressler, Jr.
This file is part of Sketch, a small, simple system for making
3d drawings with LaTeX and the PSTricks or TikZ package.
Sketch 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 3, or (at your option)
any later version.
Sketch 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 Sketch; see the file COPYING.txt. If not, see
http://www.gnu.org/copyleft */
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include "error.h"
SRC_LINE no_line = { NULL, 0 };
typedef enum error_type_t
{
E_REMARK,
E_WARNING,
E_ERROR,
E_FATAL_ERROR,
E_N // keep last; this is the number of error types
}
ERROR_TYPE;
char *error_type_str[] = {
"remark",
"warning",
"error",
"fatal",
};
static int n_errors[E_N]; // assumes C initialization to zero
static void
print_error (ERROR_TYPE type, SRC_LINE line, char *fmt, va_list arg_list)
{
n_errors[type]++;
if (line.file_name)
fprintf (stderr, "%s", line.file_name);
if (line.number > 0)
fprintf (stderr, "(%u) : ", line.number);
fprintf (stderr, "%s, ", error_type_str[type]);
vfprintf (stderr, fmt, arg_list);
fprintf (stderr, "\n");
}
void
remark (SRC_LINE line, char *fmt, ...)
{
va_list arg_list;
va_start (arg_list, fmt);
print_error (E_REMARK, line, fmt, arg_list);
va_end (arg_list);
}
void
warn (SRC_LINE line, char *fmt, ...)
{
va_list arg_list;
va_start (arg_list, fmt);
print_error (E_WARNING, line, fmt, arg_list);
va_end (arg_list);
}
void
err (SRC_LINE line, char *fmt, ...)
{
va_list arg_list;
va_start (arg_list, fmt);
print_error (E_ERROR, line, fmt, arg_list);
va_end (arg_list);
}
void
die (SRC_LINE line, char *fmt, ...)
{
va_list arg_list;
va_start (arg_list, fmt);
print_error (E_FATAL_ERROR, line, fmt, arg_list);
va_end (arg_list);
report_errors ();
}
int
trouble_p (void)
{
return n_errors[E_ERROR] > 0 || n_errors[E_FATAL_ERROR] > 0;
}
void
report_errors (void)
{
int i, n_total = 0;
// start printing summary
fprintf (stderr, "summary: ");
for (i = 0; i < E_N; i++)
{
if (n_errors[i] > 0)
{
if (n_total > 0)
fprintf (stderr, ", ");
fprintf (stderr, "%d %s", n_errors[i], error_type_str[i]);
n_total++;
}
}
// see if we need to abort
if (trouble_p ())
{
fprintf (stderr, "\nquitting...\n");
exit (1);
}
// not aborting, so finish up the summary
if (n_total == 0)
{
fprintf (stderr, "no errors");
}
fprintf (stderr, "\n");
// zero the error counters
for (i = 0; i < E_N; i++)
n_errors[i] = 0;
}
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