1 files changed, 20 insertions, 96 deletions
diff --git a/Str.c b/Str.c
index eff82a4..8e4b667 100644
--- a/Str.c
+++ b/Str.c
@@ -427,103 +427,27 @@ Stralign_center(Str s, int width)
 Str
 Sprintf(char *fmt, ...)
 {
-    int len = 0;
-    int status = SP_NORMAL;
-    int p = 0;
-    char *f;
-    Str s;
-    va_list ap;
-
-    va_start(ap, fmt);
-    for (f = fmt; *f; f++) {
-      redo:
-	switch (status) {
-	case SP_NORMAL:
-	    if (*f == '%') {
-		status = SP_PREC;
-		p = 0;
-	    }
-	    else
-		len++;
-	    break;
-	case SP_PREC:
-	    if (IS_ALPHA(*f)) {
-		/* conversion char. */
-		double vd;
-		int vi;
-		char *vs;
-		void *vp;
-
-		switch (*f) {
-		case 'l':
-		case 'h':
-		case 'L':
-		case 'w':
-		    continue;
-		case 'd':
-		case 'i':
-		case 'o':
-		case 'x':
-		case 'X':
-		case 'u':
-		    vi = va_arg(ap, int);
-		    len += (p > 0) ? p : 10;
-		    break;
-		case 'f':
-		case 'g':
-		case 'e':
-		case 'G':
-		case 'E':
-		    vd = va_arg(ap, double);
-		    len += (p > 0) ? p : 15;
-		    break;
-		case 'c':
-		    len += 1;
-		    vi = va_arg(ap, int);
-		    break;
-		case 's':
-		    vs = va_arg(ap, char *);
-		    vi = strlen(vs);
-		    len += (p > vi) ? p : vi;
-		    break;
-		case 'p':
-		    vp = va_arg(ap, void *);
-		    len += 10;
-		    break;
-		case 'n':
-		    vp = va_arg(ap, void *);
-		    break;
-		}
-		status = SP_NORMAL;
-	    }
-	    else if (IS_DIGIT(*f))
-		p = p * 10 + *f - '0';
-	    else if (*f == '.')
-		status = SP_PREC2;
-	    else if (*f == '%') {
-		status = SP_NORMAL;
-		len++;
-	    }
-	    break;
-	case SP_PREC2:
-	    if (IS_ALPHA(*f)) {
-		status = SP_PREC;
-		goto redo;
-	    }
-	    break;
+	Str s;
+	char *cb;
+	int ret;
+	size_t n;
+	va_list ap;
+
+	va_start(ap, fmt);
+	ret = vasprintf(&cb, fmt, ap);
+	if (ret == -1) {
+		fprintf(stderr,
+		    "Sprintf: vasprintf failed\n");
+		exit(1);
 	}
-    }
-    va_end(ap);
-    s = Strnew_size(len * 2);
-    va_start(ap, fmt);
-    vsprintf(s->ptr, fmt, ap);
-    va_end(ap);
-    s->length = strlen(s->ptr);
-    if (s->length > len * 2) {
-	fprintf(stderr, "Sprintf: string too long\n");
-	exit(1);
-    }
-    return s;
+	va_end(ap);
+
+	n = (size_t) ret + 1;
+	s = Strnew_size(n);
+	s->length = ret;
+	memcpy(s->ptr, cb, n);
+	free(cb);
+	return s;
 }
 
 Str