#ifndef ANSI_PARSER_H
#define ANSI_PARSER_H

#include <stdlib.h>
#include <screen.h>

// Max nr of CSI parameters
#define CSI_N_MAX 10
#define OSC_CHAR_MAX TERM_TITLE_LEN

extern void apars_handle_plainchar(char c);
extern void apars_handle_CSI(char leadchar, int *params, int count, char keychar);
extern void apars_handle_OSC_SetScreenSize(int rows, int cols);
extern void apars_handle_OSC_SetButton(int num, const char *buffer);
extern void apars_handle_OSC_SetTitle(const char *buffer);
extern void apars_handle_shortCode(char c);
extern void apars_handle_hashCode(char c);
extern void apars_handle_characterSet(char leadchar, char c);
extern void apars_handle_setXCtrls(char c);
extern void apars_reset_utf8buffer(void);

void ansi_parser_reset(void);

extern volatile u32 ansi_parser_char_cnt;

// defined in the makefile
#if DEBUG_ANSI
#define ansi_warn warn
#define ansi_dbg dbg
#else
#define ansi_warn(...)
#define ansi_dbg(...)
#endif


/**
 * \brief Linear ANSI chars stream parser
 * 
 * Parses a stream of bytes using a Ragel parser. The defined
 * grammar does not use 'unget', so the entire buffer is 
 * always processed in a linear manner.
 * 
 * \attention -> but always check the Ragel output for 'p--' 
 *            or 'p -=', that means trouble.
 * 
 * \param newdata - array of new chars to process
 * \param len - length of the newdata buffer
 */
void ansi_parser(const char *newdata, size_t len);

/** This shows a short error message and prints the history (if any) */
void apars_handle_badseq(void);

#endif // ANSI_PARSER_H