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#ifndef _ERROR_H_
#define _ERROR_H_
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#warning usage of non-standard #include <error.h> is deprecated
static unsigned int error_message_count = 0;
static inline void error(int status, int errnum, const char* format, ...)
{
/* should be fflush(stdout), but that's unspecified if stdout has been closed;
* stick with fflush(NULL) for simplicity (glibc checks if the fd is still valid) */
fflush(NULL);
va_list ap;
fprintf(stderr, "%s: ", program_invocation_name);
va_start(ap, format);
vfprintf(stderr, format, ap);
va_end(ap);
if (errnum)
fprintf(stderr, ": %s", strerror(errnum));
fprintf(stderr, "\n");
error_message_count++;
if (status)
exit(status);
}
static int error_one_per_line = 0;
static inline void error_at_line(int status, int errnum, const char *filename,
unsigned int linenum, const char *format, ...)
{
va_list ap;
if (error_one_per_line) {
static const char *old_filename;
static int old_linenum;
if (linenum == old_linenum && filename == old_filename)
return;
old_filename = filename;
old_linenum = linenum;
}
fprintf(stderr, "%s: %s:%u: ", program_invocation_name, filename, linenum);
va_start(ap, format);
vfprintf(stderr, format, ap);
va_end(ap);
if (errnum)
fprintf(stderr, ": %s", strerror(errnum));
fprintf(stderr, "\n");
error_message_count++;
if (status)
exit(status);
}
#endif /* _ERROR_H_ */
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