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termemu.h
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#pragma once
#include <_cheader.h>
#include <stdint.h>
_Begin_C_Header
#define TERM_BUF_LEN 128
/* A terminal cell represents a single character on screen */
typedef struct {
uint32_t c; /* codepoint */
uint32_t fg; /* background indexed color */
uint32_t bg; /* foreground indexed color */
uint32_t flags; /* other flags */
} term_cell_t;
typedef struct {
void (*writer)(char);
void (*set_color)(uint32_t, uint32_t);
void (*set_csr)(int,int);
int (*get_csr_x)(void);
int (*get_csr_y)(void);
void (*set_cell)(int,int,uint32_t);
void (*cls)(int);
void (*scroll)(int);
void (*redraw_cursor)(void);
void (*input_buffer_stuff)(char *);
void (*set_title)(char *);
void (*set_cell_contents)(int,int,char *);
int (*get_cell_width)(void);
int (*get_cell_height)(void);
void (*set_csr_on)(int);
void (*switch_buffer)(int);
void (*insert_delete_lines)(int);
} term_callbacks_t;
typedef struct {
uint16_t x; /* Current cursor location */
uint16_t y; /* " " " */
uint16_t save_x; /* Last cursor save */
uint16_t save_y;
uint32_t width; /* Terminal width */
uint32_t height; /* " height */
uint32_t fg; /* Current foreground color */
uint32_t bg; /* Current background color */
uint8_t flags; /* Bright, etc. */
uint8_t escape; /* Escape status */
uint8_t box;
uint8_t buflen; /* Buffer Length */
char buffer[TERM_BUF_LEN]; /* Previous buffer */
term_callbacks_t * callbacks;
int volatile lock;
uint8_t mouse_on;
uint32_t img_collected;
uint32_t img_size;
char * img_data;
uint8_t paste_mode;
} term_state_t;
/* Triggers escape mode. */
#define ANSI_ESCAPE 27
/* Escape verify */
#define ANSI_BRACKET '['
#define ANSI_BRACKET_RIGHT ']'
#define ANSI_OPEN_PAREN '('
/* Anything in this range (should) exit escape mode. */
#define ANSI_LOW 'A'
#define ANSI_HIGH 'z'
/* Escape commands */
#define ANSI_CUU 'A' /* CUrsor Up */
#define ANSI_CUD 'B' /* CUrsor Down */
#define ANSI_CUF 'C' /* CUrsor Forward */
#define ANSI_CUB 'D' /* CUrsor Back */
#define ANSI_CNL 'E' /* Cursor Next Line */
#define ANSI_CPL 'F' /* Cursor Previous Line */
#define ANSI_CHA 'G' /* Cursor Horizontal Absolute */
#define ANSI_CUP 'H' /* CUrsor Position */
#define ANSI_ED 'J' /* Erase Data */
#define ANSI_EL 'K' /* Erase in Line */
#define ANSI_SU 'S' /* Scroll Up */
#define ANSI_SD 'T' /* Scroll Down */
#define ANSI_HVP 'f' /* Horizontal & Vertical Pos. */
#define ANSI_SGR 'm' /* Select Graphic Rendition */
#define ANSI_DSR 'n' /* Device Status Report */
#define ANSI_SCP 's' /* Save Cursor Position */
#define ANSI_RCP 'u' /* Restore Cursor Position */
#define ANSI_HIDE 'l' /* DECTCEM - Hide Cursor */
#define ANSI_SHOW 'h' /* DECTCEM - Show Cursor */
#define ANSI_IL 'L' /* Insert Line(s) */
#define ANSI_DL 'M' /* Delete Line(s) */
/* Display flags */
#define ANSI_BOLD 0x01
#define ANSI_UNDERLINE 0x02
#define ANSI_ITALIC 0x04
#define ANSI_ALTFONT 0x08 /* Character should use alternate font */
#define ANSI_SPECBG 0x10
#define ANSI_BORDER 0x20
#define ANSI_WIDE 0x40 /* Character is double width */
#define ANSI_CROSS 0x80 /* And that's all I'm going to support (for now) */
#define ANSI_EXT_IMG 0x100 /* Cell is actually an image, use fg color as pointer */
#define ANSI_EXT_IOCTL 'z' /* These are special escapes only we support */
/* Default color settings */
#define TERM_DEFAULT_FG 0x07 /* Index of default foreground */
#define TERM_DEFAULT_BG 0x10 /* Index of default background */
#define TERM_DEFAULT_FLAGS 0x00 /* Default flags for a cell */
#define TERM_DEFAULT_OPAC 0xF2 /* For background, default transparency */
#define TERMEMU_MOUSE_ENABLE 0x01
#define TERMEMU_MOUSE_DRAG 0x02
#define TERMEMU_MOUSE_SGR 0x04
/* TODO: _MOUSE_UTF8 0x08 */
/* TODO: _MOUSE_URXVT 0x10 */
extern term_state_t * ansi_init(term_state_t * s, int w, int y, term_callbacks_t * callbacks_in);
extern void ansi_put(term_state_t * s, char c);
_End_C_Header