97 lines
2.8 KiB
C
97 lines
2.8 KiB
C
/* parser.h - prototypes for the command line parser. */
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/*
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* VAS_EBOOT -- GRand Unified Bootloader
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* Copyright (C) 2005,2007,2009 Free Software Foundation, Inc.
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*
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* VAS_EBOOT is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* VAS_EBOOT is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with VAS_EBOOT. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef VAS_EBOOT_PARSER_HEADER
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#define VAS_EBOOT_PARSER_HEADER 1
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#include <VasEBoot/types.h>
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#include <VasEBoot/err.h>
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#include <VasEBoot/reader.h>
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/* All the states for the command line. */
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typedef enum
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{
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VAS_EBOOT_PARSER_STATE_TEXT = 1,
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VAS_EBOOT_PARSER_STATE_ESC,
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VAS_EBOOT_PARSER_STATE_QUOTE,
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VAS_EBOOT_PARSER_STATE_DQUOTE,
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VAS_EBOOT_PARSER_STATE_VAR,
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VAS_EBOOT_PARSER_STATE_VARNAME,
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VAS_EBOOT_PARSER_STATE_VARNAME2,
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VAS_EBOOT_PARSER_STATE_QVAR,
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VAS_EBOOT_PARSER_STATE_QVARNAME,
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VAS_EBOOT_PARSER_STATE_QVARNAME2
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} VasEBoot_parser_state_t;
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/* A single state transition. */
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struct VasEBoot_parser_state_transition
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{
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/* The state that is looked up. */
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VasEBoot_parser_state_t from_state;
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/* The next state, determined by FROM_STATE and INPUT. */
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VasEBoot_parser_state_t to_state;
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/* The input that will determine the next state from FROM_STATE. */
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char input;
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/* If set to 1, the input is valid and should be used. */
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int keep_value;
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};
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/* Determines the state following STATE, determined by C. */
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VasEBoot_parser_state_t
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EXPORT_FUNC (VasEBoot_parser_cmdline_state) (VasEBoot_parser_state_t state,
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char c, char *result);
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VasEBoot_err_t
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EXPORT_FUNC (VasEBoot_parser_split_cmdline) (const char *cmdline,
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VasEBoot_reader_getline_t getline_func,
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void *getline_func_data,
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int *argc, char ***argv);
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struct VasEBoot_parser
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{
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/* The next parser. */
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struct VasEBoot_parser *next;
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/* The parser name. */
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const char *name;
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/* Initialize the parser. */
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VasEBoot_err_t (*init) (void);
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/* Clean up the parser. */
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VasEBoot_err_t (*fini) (void);
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VasEBoot_err_t (*parse_line) (char *line,
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VasEBoot_reader_getline_t getline_func,
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void *getline_func_data);
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};
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typedef struct VasEBoot_parser *VasEBoot_parser_t;
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VasEBoot_err_t VasEBoot_parser_execute (char *source);
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VasEBoot_err_t
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VasEBoot_rescue_parse_line (char *line,
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VasEBoot_reader_getline_t getline_func,
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void *getline_func_data);
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#endif /* ! VAS_EBOOT_PARSER_HEADER */
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