Separate from stellar-on-sapp project.

1 files changed, 95 insertions, 0 deletions

diff --git a/src/http_decoder_string.h b/src/http_decoder_string.h
new file mode 100644
index 0000000..f9d81dd
--- /dev/null
+++ b/src/http_decoder_string.h
@@ -0,0 +1,95 @@
+/*
+**********************************************************************************************
+*	File: http_decoder_string.h
+*   Description: 
+*	Authors: LuWenPeng <[email protected]>
+*	Date:    2022-10-31
+*   Copyright: (c) Since 2022 Geedge Networks, Ltd. All rights reserved.
+***********************************************************************************************
+*/
+
+#ifndef _HTTP_DECODER_STRING_H_
+#define _HTTP_DECODER_STRING_H_
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include "http_decoder.h"
+
+
+enum string_state {
+    STRING_STATE_INIT,
+    STRING_STATE_REFER,
+    STRING_STATE_CACHE,
+    STRING_STATE_COMMIT,
+};
+
+/* state transition diagram
+ *       +----------+
+ *       |          |
+ *      \|/         |
+ *    +------+      |
+ *    | init |      |
+ *    +------+      |
+ *       |          |
+ * +---->|          |
+ * |    \|/         |
+ * |  +-------+     |
+ * |  | refer |--+  |
+ * |  +-------+  |  |
+ * |     |       |  |
+ * |    \|/      |  |
+ * |  +-------+  |  |
+ * +--| cache |  |  |
+ *    +-------+  |  |
+ *       |       |  |
+ *       |<------+  |
+ *      \|/         |
+ *    +--------+    |
+ *    | commit |    |
+ *    +--------+    |
+ *       |          |
+ *      \|/         |
+ *    +--------+    |
+ *    | reset  |----+
+ *    +--------+
+ */
+
+
+//http decoder string
+struct http_decoder_string {
+    struct hstring refer; // shallow copy
+    struct hstring cache; // deep copy
+    struct hstring commit;
+
+    enum string_state state;
+    size_t max_cache_size;
+};
+
+void http_decoder_string_refer(struct http_decoder_string *rstr,
+                               const char *at, size_t length);
+
+void http_decoder_string_cache(struct http_decoder_string *rstr);
+
+void http_decoder_string_commit(struct http_decoder_string *rstr);
+
+void http_decoder_string_reset(struct http_decoder_string *rstr);
+
+void http_decoder_string_init(struct http_decoder_string *rstr,
+                              size_t max_cache_size);
+
+void http_decoder_string_reinit(struct http_decoder_string *rstr);
+
+enum string_state http_decoder_string_state(struct http_decoder_string *rstr);
+
+int http_decoder_string_get(struct http_decoder_string *rstr, struct hstring *out);
+
+void http_decoder_string_dump(struct http_decoder_string *rstr, const char *desc);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
\ No newline at end of file