5230903b72
While parsing token string there may be several modes: - fixed single string - multi-choice single string - any single string This patch add one more mode - any multi string. Signed-off-by: Piotr Azarewicz <piotrx.t.azarewicz@intel.com> Acked-by: Olivier Matz <olivier.matz@6wind.com>
195 lines
7.5 KiB
C
195 lines
7.5 KiB
C
/*-
|
|
* BSD LICENSE
|
|
*
|
|
* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* * Neither the name of Intel Corporation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 2009, Olivier MATZ <zer0@droids-corp.org>
|
|
* All rights reserved.
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* * Neither the name of the University of California, Berkeley nor the
|
|
* names of its contributors may be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
|
|
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
|
|
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
|
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#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.
|
|
*/
|
|
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_ */
|