1 files changed, 191 insertions, 0 deletions
diff --git a/src/spdk/dpdk/lib/librte_cmdline/cmdline_parse.h b/src/spdk/dpdk/lib/librte_cmdline/cmdline_parse.h
new file mode 100644
index 000000000..e4d802fff
--- /dev/null
+++ b/src/spdk/dpdk/lib/librte_cmdline/cmdline_parse.h
@@ -0,0 +1,191 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation.
+ * Copyright (c) 2009, Olivier MATZ <zer0@droids-corp.org>
+ * All rights reserved.
+ */
+
+#ifndef _CMDLINE_PARSE_H_
+#define _CMDLINE_PARSE_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef offsetof
+#define offsetof(type, field)  ((size_t) &( ((type *)0)->field) )
+#endif
+
+/* return status for parsing */
+#define CMDLINE_PARSE_SUCCESS        0
+#define CMDLINE_PARSE_AMBIGUOUS     -1
+#define CMDLINE_PARSE_NOMATCH       -2
+#define CMDLINE_PARSE_BAD_ARGS      -3
+
+/* return status for completion */
+#define CMDLINE_PARSE_COMPLETE_FINISHED 0
+#define CMDLINE_PARSE_COMPLETE_AGAIN    1
+#define CMDLINE_PARSE_COMPLETED_BUFFER  2
+
+/* maximum buffer size for parsed result */
+#define CMDLINE_PARSE_RESULT_BUFSIZE 8192
+
+/**
+ * Stores a pointer to the ops struct, and the offset: the place to
+ * write the parsed result in the destination structure.
+ */
+struct cmdline_token_hdr {
+	struct cmdline_token_ops *ops;
+	unsigned int offset;
+};
+typedef struct cmdline_token_hdr cmdline_parse_token_hdr_t;
+
+/**
+ * A token is defined by this structure.
+ *
+ * parse() takes the token as first argument, then the source buffer
+ * starting at the token we want to parse. The 3rd arg is a pointer
+ * where we store the parsed data (as binary). It returns the number of
+ * parsed chars on success and a negative value on error.
+ *
+ * complete_get_nb() returns the number of possible values for this
+ * token if completion is possible. If it is NULL or if it returns 0,
+ * no completion is possible.
+ *
+ * complete_get_elt() copy in dstbuf (the size is specified in the
+ * parameter) the i-th possible completion for this token.  returns 0
+ * on success or and a negative value on error.
+ *
+ * get_help() fills the dstbuf with the help for the token. It returns
+ * -1 on error and 0 on success.
+ */
+struct cmdline_token_ops {
+	/** parse(token ptr, buf, res pts, buf len) */
+	int (*parse)(cmdline_parse_token_hdr_t *, const char *, void *,
+		unsigned int);
+	/** return the num of possible choices for this token */
+	int (*complete_get_nb)(cmdline_parse_token_hdr_t *);
+	/** return the elt x for this token (token, idx, dstbuf, size) */
+	int (*complete_get_elt)(cmdline_parse_token_hdr_t *, int, char *,
+		unsigned int);
+	/** get help for this token (token, dstbuf, size) */
+	int (*get_help)(cmdline_parse_token_hdr_t *, char *, unsigned int);
+};
+
+struct cmdline;
+/**
+ * Store a instruction, which is a pointer to a callback function and
+ * its parameter that is called when the instruction is parsed, a help
+ * string, and a list of token composing this instruction.
+ *
+ * When no tokens are defined (tokens[0] == NULL), they are retrieved
+ * dynamically by calling f() as follows:
+ *
+ * @code
+ *
+ * f((struct cmdline_token_hdr **)&token_p,
+ *   NULL,
+ *   (struct cmdline_token_hdr **)&inst->tokens[num]);
+ *
+ * @endcode
+ *
+ * The address of the resulting token is expected at the location pointed by
+ * the first argument. Can be set to NULL to end the list.
+ *
+ * The cmdline argument (struct cmdline *) is always NULL.
+ *
+ * The last argument points to the inst->tokens[] entry to retrieve, which
+ * is not necessarily inside allocated memory and should neither be read nor
+ * written. Its sole purpose is to deduce the token entry index of interest
+ * as described in the example below.
+ *
+ * Note about constraints:
+ *
+ * - Only the address of these tokens is dynamic, their storage should be
+ *   static like normal tokens.
+ * - Dynamic token lists that need to maintain an internal context (e.g. in
+ *   order to determine the next token) must store it statically also. This
+ *   context must be reinitialized when the first token is requested, that
+ *   is, when &inst->tokens[0] is provided as the third argument.
+ * - Dynamic token lists must be NULL-terminated to generate usable
+ *   commands.
+ *
+ * @code
+ *
+ * // Assuming first and third arguments are respectively named "token_p"
+ * // and "token":
+ *
+ * int index = token - inst->tokens;
+ *
+ * if (!index) {
+ *     [...] // Clean up internal context if any.
+ * }
+ * [...] // Then set up dyn_token according to index.
+ *
+ * if (no_more_tokens)
+ *     *token_p = NULL;
+ * else
+ *     *token_p = &dyn_token;
+ *
+ * @endcode
+ */
+struct cmdline_inst {
+	/* f(parsed_struct, data) */
+	void (*f)(void *, struct cmdline *, void *);
+	void *data;
+	const char *help_str;
+	cmdline_parse_token_hdr_t *tokens[];
+};
+typedef struct cmdline_inst cmdline_parse_inst_t;
+
+/**
+ * A context is identified by its name, and contains a list of
+ * instruction
+ *
+ */
+typedef cmdline_parse_inst_t *cmdline_parse_ctx_t;
+
+/**
+ * Try to parse a buffer according to the specified context. The
+ * argument buf must ends with "\n\0". The function returns
+ * CMDLINE_PARSE_AMBIGUOUS, CMDLINE_PARSE_NOMATCH or
+ * CMDLINE_PARSE_BAD_ARGS on error. Else it calls the associated
+ * function (defined in the context) and returns 0
+ * (CMDLINE_PARSE_SUCCESS).
+ */
+int cmdline_parse(struct cmdline *cl, const char *buf);
+
+/**
+ * complete() must be called with *state==0 (try to complete) or
+ * with *state==-1 (just display choices), then called without
+ * modifying *state until it returns CMDLINE_PARSE_COMPLETED_BUFFER or
+ * CMDLINE_PARSE_COMPLETED_BUFFER.
+ *
+ * It returns < 0 on error.
+ *
+ * Else it returns:
+ *   - CMDLINE_PARSE_COMPLETED_BUFFER on completion (one possible
+ *     choice). In this case, the chars are appended in dst buffer.
+ *   - CMDLINE_PARSE_COMPLETE_AGAIN if there is several possible
+ *     choices. In this case, you must call the function again,
+ *     keeping the value of state intact.
+ *   - CMDLINE_PARSE_COMPLETED_BUFFER when the iteration is
+ *     finished. The dst is not valid for this last call.
+ *
+ * The returned dst buf ends with \0.
+ */
+int cmdline_complete(struct cmdline *cl, const char *buf, int *state,
+		     char *dst, unsigned int size);
+
+
+/* return true if(!c || iscomment(c) || isblank(c) ||
+ * isendofline(c)) */
+int cmdline_isendoftoken(char c);
+
+/* return true if(!c || iscomment(c) || isendofline(c)) */
+int cmdline_isendofcommand(char c);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _CMDLINE_PARSE_H_ */