faa52bdcc0
Make use of strerror(errno) and format all errors equally: function ['parameters']: error message
42 lines
684 B
C
42 lines
684 B
C
/* See LICENSE file for copyright and license details. */
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#include <errno.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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#include "util.h"
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const char *
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bprintf(const char *fmt, ...)
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{
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va_list ap;
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size_t len;
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va_start(ap, fmt);
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len = vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
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va_end(ap);
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if (len >= sizeof(buf))
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buf[sizeof(buf)-1] = '\0';
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return buf;
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}
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int
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pscanf(const char *path, const char *fmt, ...)
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{
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FILE *fp;
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va_list ap;
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int n;
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if (!(fp = fopen(path, "r"))) {
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fprintf(stderr, "fopen '%s': %s\n", path, strerror(errno));
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return -1;
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}
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va_start(ap, fmt);
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n = vfscanf(fp, fmt, ap);
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va_end(ap);
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fclose(fp);
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return (n == EOF) ? -1 : n;
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}
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