Added a format_b() function to format strings from numbers that in in

bytes.

2 files changed, 45 insertions, 2 deletions

diff --git a/utils.c b/utils.c
index 7360bda..23e9d95 100644
--- a/utils.c
+++ b/utils.c
@@ -554,6 +554,50 @@ format_time(long seconds)
 	return (result);
 }
 
+#define NUM_STRINGS 8
+
+/*
+ * format_b(amt) - format a byte memory value, returning a string
+ *		suitable for display.  Returns a pointer to a static
+ *		area that changes each call.  "amt" is converted to a
+ *		string with a trailing "B".  If "amt" is 10000 or greater,
+ *		then it is formatted as megabytes (rounded) with a
+ *		trailing "K".  And so on...
+ */
+
+char *
+format_b(long long amt)
+
+{
+	static char retarray[NUM_STRINGS][16];
+	static int	index = 0;
+	register char *ret;
+	register char tag = 'B';
+
+	ret = retarray[index];
+	index = (index + 1) % NUM_STRINGS;
+
+	if (amt >= 10000)
+	{
+		amt = (amt + 512) / 1024;
+		tag = 'K';
+		if (amt >= 10000)
+		{
+			amt = (amt + 512) / 1024;
+			tag = 'B';
+			if (amt >= 10000)
+			{
+				amt = (amt + 512) / 1024;
+				tag = 'G';
+			}
+		}
+	}
+
+	snprintf(ret, sizeof(retarray[index]) - 1, "%lld%c", amt, tag);
+
+	return (ret);
+}
+
 /*
  * format_k(amt) - format a kilobyte memory value, returning a string
  *		suitable for display.  Returns a pointer to a static
@@ -577,8 +621,6 @@ format_time(long seconds)
  * to convert the modulo operation into something quicker.	What a hack!
  */
 
-#define NUM_STRINGS 8
-
 char *
 format_k(long amt)
 
diff --git a/utils.h b/utils.h
index aa47b52..42e48b7 100644
--- a/utils.h
+++ b/utils.h
@@ -27,6 +27,7 @@ long		percentages(int, int64_t *, int64_t *, int64_t *, int64_t *);
 char	   *errmsg(int);
 char	   *format_percent(double);
 char	   *format_time(long);
+char	   *format_b(long long);
 char	   *format_k(long);
 char	   *string_list(char **);
 void		debug_set(int);