strstream header file also.

stream/upb_strstream.h

@@ -0,0 +1,61 @@
+/*
+ * upb - a minimalist implementation of protocol buffers.
+ *
+ * This file contains upb_bytesrc and upb_bytesink implementations for
+ * upb_string.
+ *
+ * Copyright (c) 2009-2010 Joshua Haberman.  See LICENSE for details.
+ */
+
+#ifndef UPB_STRSTREAM_H
+#define UPB_STRSTREAM_H
+
+#include "upb_stream.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* upb_stringsrc **************************************************************/
+
+struct upb_stringsrc;
+typedef struct upb_stringsrc upb_stringsrc;
+
+// Create/free a stringsrc.
+upb_stringsrc *upb_stringsrc_new();
+void upb_stringsrc_free(upb_stringsrc *s);
+
+// Resets the stringsrc to a state where it will vend the given string.  The
+// stringsrc will take a reference on the string, so the caller need not ensure
+// that it outlives the stringsrc.  A stringsrc can be reset multiple times.
+void upb_stringsrc_reset(upb_stringsrc *s, upb_string *str);
+
+// Returns the upb_bytesrc* for this stringsrc.  Invalidated by reset above.
+upb_bytesrc *upb_stringsrc_bytesrc();
+
+
+/* upb_stringsink *************************************************************/
+
+struct upb_stringsink;
+typedef struct upb_stringsink upb_stringsink;
+
+// Create/free a stringsrc.
+upb_stringsink *upb_stringsink_new();
+void upb_stringsink_free(upb_stringsink *s);
+
+// Gets a string containing the data that has been written to this stringsink.
+// The caller does *not* own any references to this string.
+upb_string *upb_stringsink_getstring(upb_stringsink *s);
+
+// Clears the internal string of accumulated data, resetting it to empty.
+void upb_stringsink_reset(upb_stringsink *s);
+
+// Returns the upb_bytesrc* for this stringsrc.  Invalidated by reset above.
+upb_bytesink *upb_stringsrc_bytesink();
+
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#endif