The R13B03 release.OTP_R13B03

1 files changed, 77 insertions, 0 deletions

diff --git a/lib/erl_interface/src/encode/encode_string.c b/lib/erl_interface/src/encode/encode_string.c
new file mode 100644
index 0000000000..1d342cb605
--- /dev/null
+++ b/lib/erl_interface/src/encode/encode_string.c
@@ -0,0 +1,77 @@
+/*
+ * %CopyrightBegin%
+ * 
+ * Copyright Ericsson AB 1998-2009. All Rights Reserved.
+ * 
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ * 
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ * 
+ * %CopyrightEnd%
+ */
+#include <string.h>
+#include "eidef.h"
+#include "eiext.h"
+#include "putget.h"
+
+
+int ei_encode_string(char *buf, int *index, const char *p)
+{
+    return ei_encode_string_len(buf, index, p, strlen(p));
+}
+
+int ei_encode_string_len(char *buf, int *index, const char *p, int len)
+{
+    char *s = buf + *index;
+    char *s0 = s;
+    int i;
+
+    if (len == 0) {
+
+      if (!buf) {
+	s += 1;
+      } else {
+	put8(s,ERL_NIL_EXT);
+      }
+
+    } else if (len <= 0xffff) {
+
+      if (!buf) {
+	s += 3;
+      } else {
+	put8(s,ERL_STRING_EXT);
+	put16be(s,len);
+	memmove(s,p,len);	/* unterminated string */
+      }
+      s += len;
+
+    } else {
+
+      if (!buf) {
+	s += 5 + (2*len) + 1;
+      } else {
+	/* strings longer than 65535 are encoded as lists */
+	put8(s,ERL_LIST_EXT);
+	put32be(s,len);
+
+	for (i=0; i<len; i++) {
+	  put8(s,ERL_SMALL_INTEGER_EXT);
+	  put8(s,p[i]);
+	}
+	put8(s,ERL_NIL_EXT);
+      }
+
+    }
+
+    *index += s-s0; 
+
+    return 0; 
+}
+