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