X-Git-Url: https://git.xinqibao.xyz/slstatus.git/blobdiff_plain/80fc20d1d69b14f36ad9bb64d8af38481cbf1ff5..422cadfd5ffd78ae1b8fdf15734e03bd0333b26e:/util.c

diff --git a/util.c b/util.c
index 08f14ff..923d4df 100644
--- a/util.c
+++ b/util.c
@@ -48,6 +48,27 @@ die(const char *fmt, ...)
 	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, ...)
 {
@@ -65,6 +86,22 @@ bprintf(const char *fmt, ...)
 	return buf;
 }
 
+const char *
+fmt_scaled(size_t bytes)
+{
+	unsigned int i;
+	float scaled;
+	const char *units[] = { "B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB",
+	                        "ZiB", "YiB" };
+
+	scaled = bytes;
+	for (i = 0; i < LEN(units) && scaled >= 1024; i++) {
+		scaled /= 1024.0;
+	}
+
+	return bprintf("%.1f%s", scaled, units[i]);
+}
+
 int
 pscanf(const char *path, const char *fmt, ...)
 {