remove some unnecessary intermediate buffers in lefty

diff --git a/cmd/lefty/str.c b/cmd/lefty/str.c
index 1c0d7038458ba8029c59ed8841983bd14b2b0254..03a0f91f0218393861edc22726acc828c4c7b262 100644 (file)
--- a/cmd/lefty/str.c
+++ b/cmd/lefty/str.c
@@ -443,26 +443,18 @@ static void appends (char *s) {
 }
 
 static void appendi (long i) {
-    char buf[40];
-    int n;
-
-    sprintf (buf, "%ld", i);
-    n = strlen (buf) + 1;
+    int n = snprintf(NULL, 0, "%ld", i) + 1;
     if (sbufi + n > sbufn)
         growsbuf (n);
-    strcpy (&sbufp[sbufi], buf);
+    sprintf(&sbufp[sbufi], "%ld", i);
     sbufi += (n - 1);
 }
 
 static void appendd (double d) {
-    char buf[40];
-    int n;
-
-    sprintf (buf, "%lf", d);
-    n = strlen (buf) + 1;
+    int n = snprintf(NULL, 0, "%lf", d) + 1;
     if (sbufi + n > sbufn)
         growsbuf (n);
-    strcpy (&sbufp[sbufi], buf);
+    sprintf(&sbufp[sbufi], "%lf", d);
     sbufi += (n - 1);
 }