resp协议定义， xml定义配置文件

kvs_protocol_resp.h

@@ -0,0 +1,90 @@
+#ifndef __RESP_H__
+#define __RESP_H__
+
+#include <stdint.h>
+#include <stddef.h>
+#include "kvstore.h"
+
+#define RESP_MAX_ARGC  16
+#define RESP_MAX_LINE  1024
+#define RESP_MAX_BULK  (16u * 1024u * 1024u) /* 16MB default */
+
+/**
+ * SET 
+ */
+
+typedef enum {
+	KVS_CMD_START = 0,
+	// array
+	KVS_CMD_SET = KVS_CMD_START,
+	KVS_CMD_GET,
+	KVS_CMD_DEL,
+	KVS_CMD_MOD,
+	KVS_CMD_EXIST,
+	// rbtree
+	KVS_CMD_RSET,
+	KVS_CMD_RGET,
+	KVS_CMD_RDEL,
+	KVS_CMD_RMOD,
+	KVS_CMD_REXIST,
+	// hash
+	KVS_CMD_HSET,
+	KVS_CMD_HGET,
+	KVS_CMD_HDEL,
+	KVS_CMD_HMOD,
+	KVS_CMD_HEXIST,
+	
+	KVS_CMD_SAVE,
+	KVS_CMD_PSYNC,
+	KVS_CMD_COUNT,
+}kvs_cmd_t;
+
+typedef struct resp_slice_s {
+    const uint8_t *ptr;
+    uint32_t len;
+} resp_slice_t;
+
+typedef struct resp_cmd_s {
+    uint32_t argc;
+    resp_slice_t argv[RESP_MAX_ARGC]; /* argv[0] is command name */
+} resp_cmd_t;
+
+typedef enum resp_type_e {
+    RESP_T_SIMPLE_STR,
+    RESP_T_ERROR,
+    RESP_T_INTEGER,
+    RESP_T_BULK_STR,
+    RESP_T_NIL,          /* nil bulk string ($-1\r\n) */
+} resp_type_t;
+
+typedef struct resp_value_s {
+    resp_type_t type;
+    int64_t i64;         /* for integer */
+    resp_slice_t bulk;   /* for simple/error/bulk string (bytes) */
+} resp_value_t;
+
+/* ----------------- parsing ----------------- */
+/* Parse one RESP command from [buf, buf+len).
+ * return: -1 protocol error, 0 need more data, >0 bytes consumed
+ */
+int resp_parse_one_cmd(const uint8_t *buf, int len, resp_cmd_t *out_cmd);
+
+/* ----------------- response building ----------------- */
+/* Build RESP value into out buffer. return bytes written, -1 on error/capacity. */
+int resp_build_value(const resp_value_t *v, uint8_t *out, size_t cap);
+
+/* Convenience helpers */
+resp_value_t resp_simple(const char *s); /* +s\r\n */
+resp_value_t resp_error(const char *s);  /* -s\r\n */
+resp_value_t resp_int(int64_t x);        /* :x\r\n */
+resp_value_t resp_bulk(const uint8_t *p, uint32_t n); /* $n\r\n...\r\n */
+resp_value_t resp_nil(void);             /* $-1\r\n */
+
+/* ----------------- dispatcher ----------------- */
+/* Execute one command and return a RESP value.
+ * NOTE: output value may reference storage memory (for GET), so build response
+ * promptly after this call.
+ */
+int resp_dispatch(const resp_cmd_t *cmd, resp_value_t *out_value);
+
+#endif