mirror of
https://github.com/taigrr/arduinolibs
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76 lines
2.8 KiB
C
76 lines
2.8 KiB
C
/*
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* Copyright (C) 2016 Southern Storm Software, Pty Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef JSON_READER_H
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#define JSON_READER_H
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#include <stdio.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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/**
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* \brief Token codes.
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*/
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typedef enum
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{
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JSON_TOKEN_START, /**< Still at the start, need to read first token */
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JSON_TOKEN_STRING, /**< Quoted string */
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JSON_TOKEN_NUMBER, /**< Numeric value */
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JSON_TOKEN_NULL, /**< "null" */
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JSON_TOKEN_TRUE, /**< "true" */
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JSON_TOKEN_FALSE, /**< "false" */
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JSON_TOKEN_LBRACE, /**< "{" */
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JSON_TOKEN_RBRACE, /**< "}" */
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JSON_TOKEN_LSQUARE, /**< "[" */
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JSON_TOKEN_RSQUARE, /**< "]" */
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JSON_TOKEN_COMMA, /**< "," */
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JSON_TOKEN_COLON, /**< ":" */
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JSON_TOKEN_END /**< End of stream or error */
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} JSONToken;
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/**
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* \brief State information for JSON readers.
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*/
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typedef struct
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{
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FILE *stream; /**< Input stream to read from */
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JSONToken token; /**< Current token type */
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char *str_value; /**< String value for the current token */
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const char *filename; /**< Name of the file being read from */
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long line_number; /**< Current line number in the file */
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int saw_eof; /**< Non-zero if already seen EOF */
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int errors; /**< Non-zero if errors seen during parsing */
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} JSONReader;
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void json_init(JSONReader *reader, const char *filename, FILE *stream);
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void json_free(JSONReader *reader);
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JSONToken json_next_token(JSONReader *reader);
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int json_is_name(JSONReader *reader, const char *name);
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void json_error(JSONReader *reader, const char *format, ...);
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void json_error_on_line(JSONReader *reader, long line, const char *format, ...);
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#endif
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