-#ifndef COMMAND_MATCH_H
-#define COMMAND_MATCH_H
+/*
+ * Input matching routines for CLI backend.
+ *
+ * --
+ * Copyright (C) 2016 Cumulus Networks, Inc.
+ *
+ * This file is part of GNU Zebra.
+ *
+ * GNU Zebra is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * GNU Zebra is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
-#include "command_graph.h"
+#ifndef _ZEBRA_COMMAND_MATCH_H
+#define _ZEBRA_COMMAND_MATCH_H
-/**
- * Filter types. These tell the parser whether to allow
- * partial matching on tokens.
- */
-enum filter_type
-{
- FILTER_RELAXED,
- FILTER_STRICT
-};
+#include "graph.h"
+#include "linklist.h"
+#include "command.h"
-/**
- * Command matcher result value.
+/* These definitions exist in command.c in the current engine but should be
+ * relocated here in the new engine
*/
-enum matcher_rv
-{
- MATCHER_OK,
- MATCHER_COMPLETE,
- MATCHER_INCOMPLETE,
- MATCHER_NO_MATCH,
- MATCHER_AMBIGUOUS,
- MATCHER_EXCEED_ARGC_MAX
-};
+enum filter_type { FILTER_RELAXED, FILTER_STRICT };
-/* Completion match types. */
-enum match_type
-{
- no_match,
- partly_match,
- exact_match
+/* matcher result value */
+enum matcher_rv {
+ MATCHER_NO_MATCH,
+ MATCHER_INCOMPLETE,
+ MATCHER_AMBIGUOUS,
+ MATCHER_OK,
};
-/**
- * Defines which matcher_rv values constitute
- * an error. Should be used against matcher_rv
- * return values to do basic error checking.
- */
-#define MATCHER_ERROR(matcher_rv) \
- ( (matcher_rv) == MATCHER_INCOMPLETE \
- || (matcher_rv) == MATCHER_NO_MATCH \
- || (matcher_rv) == MATCHER_AMBIGUOUS \
- || (matcher_rv) == MATCHER_EXCEED_ARGC_MAX \
- )
-
-enum match_type
-cmd_ipv4_match (const char *);
-enum match_type
-cmd_ipv4_prefix_match (const char *);
-
-enum match_type
-cmd_ipv6_match (const char *);
-
-enum match_type
-cmd_ipv6_prefix_match (const char *);
+/* completion match types */
+enum match_type {
+ trivial_match, // the input is null
+ no_match, // the input does not match
+ partly_match, // the input matches but is incomplete
+ exact_match // the input matches and is complete
+};
-enum match_type
-cmd_range_match (struct graph_node *, const char *str);
+/* Defines which matcher_rv values constitute an error. Should be used with
+ * matcher_rv return values to do basic error checking.
+ */
+#define MATCHER_ERROR(matcher_rv) \
+ ((matcher_rv) == MATCHER_INCOMPLETE \
+ || (matcher_rv) == MATCHER_NO_MATCH \
+ || (matcher_rv) == MATCHER_AMBIGUOUS)
-enum match_type
-cmd_word_match (struct graph_node *, enum filter_type, const char *);
+/**
+ * Attempt to find an exact command match for a line of user input.
+ *
+ * @param[in] cmdgraph command graph to match against
+ * @param[in] vline vectorized input string
+ * @param[out] argv pointer to argument list if successful match, NULL
+ * otherwise. The elements of this list are pointers to struct cmd_token
+ * and represent the sequence of tokens matched by the inpu. The ->arg
+ * field of each token points to a copy of the input matched on it. These
+ * may be safely deleted or modified.
+ * @param[out] element pointer to matched cmd_element if successful match,
+ * or NULL when MATCHER_ERROR(rv) is true. The cmd_element may *not* be
+ * safely deleted or modified; it is the instance initialized on startup.
+ * @return matcher status
+ */
+enum matcher_rv command_match(struct graph *cmdgraph, vector vline,
+ struct list **argv,
+ const struct cmd_element **element);
-enum match_type
-match_command (struct graph_node *, enum filter_type, const char *);
+/**
+ * Compiles possible completions for a given line of user input.
+ *
+ * @param[in] start the start node of the DFA to match against
+ * @param[in] vline vectorized input string
+ * @param[out] completions pointer to list of cmd_token representing
+ * acceptable next inputs, or NULL when MATCHER_ERROR(rv) is true.
+ * The elements of this list are pointers to struct cmd_token and take on a
+ * variety of forms depending on the passed vline. If the last element in vline
+ * is NULL, all previous elements are considered to be complete words (the case
+ * when a space is the last token of the line) and completions are generated
+ * based on what could follow that input. If the last element in vline is not
+ * NULL and each sequential element matches the corresponding tokens of one or
+ * more commands exactly (e.g. 'encapv4' and not 'en') the same result is
+ * generated. If the last element is not NULL and the best possible match is a
+ * partial match, then the result generated will be all possible continuations
+ * of that element (e.g. 'encapv4', 'encapv6', etc for input 'en').
+ * @return matcher status
+ */
+enum matcher_rv command_complete(struct graph *cmdgraph, vector vline,
+ struct list **completions);
-#endif
+#endif /* _ZEBRA_COMMAND_MATCH_H */
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