-#include <err.h>
+/* See LICENSE file for copyright and license details. */
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
+#include <stdlib.h>
#include <string.h>
#include "util.h"
+char *argv0;
+
+static void
+verr(const char *fmt, va_list ap)
+{
+ if (argv0 && strncmp(fmt, "usage", sizeof("usage") - 1)) {
+ fprintf(stderr, "%s: ", argv0);
+ }
+
+ vfprintf(stderr, fmt, ap);
+
+ if (fmt[0] && fmt[strlen(fmt) - 1] == ':') {
+ fputc(' ', stderr);
+ perror(NULL);
+ } else {
+ fputc('\n', stderr);
+ }
+}
+
+void
+warn(const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ verr(fmt, ap);
+ va_end(ap);
+}
+
+void
+die(const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ verr(fmt, ap);
+ va_end(ap);
+
+ exit(1);
+}
+
+int
+esnprintf(char *str, size_t size, const char *fmt, ...)
+{
+ va_list ap;
+ int ret;
+
+ va_start(ap, fmt);
+ ret = vsnprintf(str, size, fmt, ap);
+ va_end(ap);
+
+ if (ret < 0) {
+ warn("snprintf:");
+ return -1;
+ } else if ((size_t)ret >= size) {
+ warn("snprintf: Output truncated");
+ return -1;
+ }
+
+ return ret;
+}
+
const char *
bprintf(const char *fmt, ...)
{
va_list ap;
- size_t len;
+ int ret;
va_start(ap, fmt);
- len = vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
+ if ((ret = vsnprintf(buf, sizeof(buf), fmt, ap)) < 0) {
+ warn("vsnprintf:");
+ } else if ((size_t)ret >= sizeof(buf)) {
+ warn("vsnprintf: Output truncated");
+ }
va_end(ap);
- if (len >= sizeof(buf))
- buf[sizeof(buf)-1] = '\0';
-
return buf;
}
+const char *
+fmt_human_2(size_t num, char *unit)
+{
+ size_t i;
+ double scaled;
+ const char *prefix[] = { "", "Ki", "Mi", "Gi", "Ti", "Pi", "Ei",
+ "Zi", "Yi" };
+
+ scaled = num;
+ for (i = 0; i < LEN(prefix) && scaled >= 1024; i++) {
+ scaled /= 1024.0;
+ }
+
+ return bprintf("%.1f%s%s", scaled, prefix[i], unit);
+}
+
+const char *
+fmt_human_10(size_t num, char *unit)
+{
+ size_t i;
+ double scaled;
+ const char *prefix[] = { "", "K", "M", "G", "T", "P", "E",
+ "Z", "Y" };
+
+ scaled = num;
+ for (i = 0; i < LEN(prefix) && scaled >= 1000; i++) {
+ scaled /= 1000.0;
+ }
+
+ return bprintf("%.1f%s%s", scaled, prefix[i], unit);
+}
+
int
pscanf(const char *path, const char *fmt, ...)
{
int n;
if (!(fp = fopen(path, "r"))) {
- warn("fopen %s: %s\n", path, strerror(errno));
+ warn("fopen '%s':", path);
return -1;
}
va_start(ap, fmt);