Initial Contributionandroid-1.0release-1.0cdma-import

1 files changed, 66 insertions, 0 deletions

diff --git a/libc/sprintf.c b/libc/sprintf.c
new file mode 100644
index 0000000..4075724
--- /dev/null
+++ b/libc/sprintf.c
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the 
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <stdarg.h>
+
+#include <boot/boot.h>
+#include "libc_private.h"
+
+struct snprintf_ctxt 
+{
+    char *next;
+    int avail;
+};
+
+static void snprintf_putc(unsigned n, void *cookie)
+{
+    struct snprintf_ctxt *ctxt = cookie;
+    
+    if(ctxt->avail > 0) {
+        *ctxt->next++ = n;
+        ctxt->avail--;
+    }
+}
+
+int snprintf(char *str, int sz, const char *fmt, ...)
+{
+    va_list ap;
+    struct snprintf_ctxt ctxt;
+    
+    if(sz < 1) return 0;
+    
+    ctxt.avail = sz - 1;
+    ctxt.next = str;
+    
+    va_start(ap, fmt);
+    __xprintf(fmt, ap, snprintf_putc, &ctxt);
+    va_end(ap);
+
+    *ctxt.next = 0;
+    return ctxt.next - str;
+}