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gex-core/utils/ini_parser.h

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1.9 KiB

//
// INI file parser with a FSM generated by Ragel. This was originally written for ESPTerm
// Used to extract sections, keys and values from user-provided settings file
//
#ifndef INIPARSE_STREAM_H
#define INIPARSE_STREAM_H
#include "platform.h"
//// toggleable logging func
//#ifdef DEBUG_INI
//#define ini_error(fmt, ...) dbg("! INI err: "#fmt, ##__VA_ARGS__)
//#else
//#define ini_error(fmt, ...)
//#endif
// buffer sizes
//#define INI_KEY_MAX 20
//#define INI_VALUE_MAX 30 // moved to plat_compat.h
/**
* INI parser callback, called for each found key-value pair.
*
* @param section - current section, empty string for global keys
* @param key - found key (trimmed of whitespace)
* @param value - value, trimmed of quotes or whitespace
* @param userData - opaque user data pointer, general purpose
*/
typedef void (*IniParserCallback)(const char *section, const char *key, const char *value, void *userData);
/**
* Begin parsing a stream
*
* @param callback - key callback to assign
* @param userData - optional user data that will be passed to the callback
*/
void ini_parse_begin(IniParserCallback callback, void *userData);
/**
* End parse stream.
* Flushes what remains in the buffer and removes callback.
*
* @returns userData or NULL if none
*/
void* ini_parse_end(void);
/**
* Parse a string (needn't be complete line or file)
*
* @param data - string to parse
* @param len - string length (0 = use strlen)
*/
void ini_parse(const char *data, size_t len);
/**
* Parse a complete file loaded to string
*
* @param text - entire file as string
* @param len - file length (0 = use strlen)
* @param callback - key callback
* @param userData - optional user data for key callback
*/
void ini_parse_file(const char *text, size_t len, IniParserCallback callback, void *userData);
/**
* Explicitly reset the parser
*/
void ini_parse_reset(void);
#endif // INIPARSE_STREAM_H