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/* parser.h - prototypes for the command line parser. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2005,2007,2009 Free Software Foundation, Inc.
*
* GRUB 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 3 of the License, or
* (at your option) any later version.
*
* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_PARSER_HEADER
#define GRUB_PARSER_HEADER 1
#include <grub/types.h>
#include <grub/err.h>
#include <grub/reader.h>
/* All the states for the command line. */
typedef enum
{
GRUB_PARSER_STATE_TEXT = 1,
GRUB_PARSER_STATE_ESC,
GRUB_PARSER_STATE_QUOTE,
GRUB_PARSER_STATE_DQUOTE,
GRUB_PARSER_STATE_VAR,
GRUB_PARSER_STATE_VARNAME,
GRUB_PARSER_STATE_VARNAME2,
GRUB_PARSER_STATE_QVAR,
GRUB_PARSER_STATE_QVARNAME,
GRUB_PARSER_STATE_QVARNAME2
} grub_parser_state_t;
/* A single state transition. */
struct grub_parser_state_transition
{
/* The state that is looked up. */
grub_parser_state_t from_state;
/* The next state, determined by FROM_STATE and INPUT. */
grub_parser_state_t to_state;
/* The input that will determine the next state from FROM_STATE. */
char input;
/* If set to 1, the input is valid and should be used. */
int keep_value;
};
/* Determines the state following STATE, determined by C. */
grub_parser_state_t
EXPORT_FUNC (grub_parser_cmdline_state) (grub_parser_state_t state,
char c, char *result);
grub_err_t
EXPORT_FUNC (grub_parser_split_cmdline) (const char *cmdline,
grub_reader_getline_t getline_func,
void *getline_func_data,
int *argc, char ***argv);
struct grub_parser
{
/* The next parser. */
struct grub_parser *next;
/* The parser name. */
const char *name;
/* Initialize the parser. */
grub_err_t (*init) (void);
/* Clean up the parser. */
grub_err_t (*fini) (void);
grub_err_t (*parse_line) (char *line,
grub_reader_getline_t getline_func,
void *getline_func_data);
};
typedef struct grub_parser *grub_parser_t;
grub_err_t grub_parser_execute (char *source);
grub_err_t
grub_rescue_parse_line (char *line,
grub_reader_getline_t getline_func,
void *getline_func_data);
#endif /* ! GRUB_PARSER_HEADER */
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