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#ifndef __VTERM_INTERNAL_H__
#define __VTERM_INTERNAL_H__
#include "vterm.h"
#include <stdarg.h>
typedef struct VTermEncoding VTermEncoding;
typedef struct {
VTermEncoding *enc;
// This size should be increased if required by other stateful encodings
char data[4*sizeof(uint32_t)];
} VTermEncodingInstance;
struct VTermPen
{
VTermColor fg;
VTermColor bg;
unsigned int bold:1;
unsigned int underline:2;
unsigned int italic:1;
unsigned int blink:1;
unsigned int reverse:1;
unsigned int strike:1;
unsigned int font:4; /* To store 0-9 */
};
static inline int vterm_color_equal(VTermColor a, VTermColor b)
{
return a.red == b.red && a.green == b.green && a.blue == b.blue;
}
struct VTermState
{
VTerm *vt;
const VTermStateCallbacks *callbacks;
void *cbdata;
int rows;
int cols;
/* Current cursor position */
VTermPos pos;
int at_phantom; /* True if we're on the "81st" phantom column to defer a wraparound */
int scrollregion_top;
int scrollregion_bottom; /* -1 means unbounded */
#define SCROLLREGION_BOTTOM(state) ((state)->scrollregion_bottom > -1 ? (state)->scrollregion_bottom : (state)->rows)
int scrollregion_left;
#define SCROLLREGION_LEFT(state) ((state)->mode.leftrightmargin ? (state)->scrollregion_left : 0)
int scrollregion_right; /* -1 means unbounded */
#define SCROLLREGION_RIGHT(state) ((state)->mode.leftrightmargin && (state)->scrollregion_right > -1 ? (state)->scrollregion_right : (state)->cols)
/* Bitvector of tab stops */
unsigned char *tabstops;
/* Mouse state */
int mouse_col, mouse_row;
int mouse_buttons;
int mouse_flags;
enum { MOUSE_X10, MOUSE_UTF8, MOUSE_SGR, MOUSE_RXVT } mouse_protocol;
/* Last glyph output, for Unicode recombining purposes */
uint32_t *combine_chars;
size_t combine_chars_size; // Number of ELEMENTS in the above
int combine_width; // The width of the glyph above
VTermPos combine_pos; // Position before movement
struct {
int keypad:1;
int cursor:1;
int autowrap:1;
int insert:1;
int newline:1;
int cursor_visible:1;
int cursor_blink:1;
unsigned int cursor_shape:2;
int alt_screen:1;
int origin:1;
int screen:1;
int leftrightmargin:1;
} mode;
VTermEncodingInstance encoding[4], encoding_utf8;
int gl_set, gr_set, gsingle_set;
struct VTermPen pen;
VTermColor default_fg;
VTermColor default_bg;
int fg_index;
int bg_index;
int bold_is_highbright;
unsigned int protected_cell : 1;
/* Saved state under DEC mode 1048/1049 */
struct {
VTermPos pos;
struct VTermPen pen;
struct {
int cursor_visible:1;
int cursor_blink:1;
unsigned int cursor_shape:2;
} mode;
} saved;
};
struct VTerm
{
VTermAllocatorFunctions *allocator;
void *allocdata;
int rows;
int cols;
struct {
int utf8:1;
int ctrl8bit:1;
} mode;
enum VTermParserState {
NORMAL,
CSI,
OSC,
DCS,
ESC,
ESC_IN_OSC,
ESC_IN_DCS,
} parser_state;
const VTermParserCallbacks *parser_callbacks;
void *cbdata;
/* len == malloc()ed size; cur == number of valid bytes */
char *strbuffer;
size_t strbuffer_len;
size_t strbuffer_cur;
char *outbuffer;
size_t outbuffer_len;
size_t outbuffer_cur;
VTermState *state;
VTermScreen *screen;
};
struct VTermEncoding {
void (*init) (VTermEncoding *enc, void *data);
void (*decode)(VTermEncoding *enc, void *data,
uint32_t cp[], int *cpi, int cplen,
const char bytes[], size_t *pos, size_t len);
};
typedef enum {
ENC_UTF8,
ENC_SINGLE_94
} VTermEncodingType;
void *vterm_allocator_malloc(VTerm *vt, size_t size);
void vterm_allocator_free(VTerm *vt, void *ptr);
void vterm_push_output_bytes(VTerm *vt, const char *bytes, size_t len);
void vterm_push_output_vsprintf(VTerm *vt, const char *format, va_list args);
void vterm_push_output_sprintf(VTerm *vt, const char *format, ...);
void vterm_push_output_sprintf_ctrl(VTerm *vt, unsigned char ctrl, const char *fmt, ...);
void vterm_push_output_sprintf_dcs(VTerm *vt, const char *fmt, ...);
void vterm_state_free(VTermState *state);
void vterm_state_resetpen(VTermState *state);
void vterm_state_setpen(VTermState *state, const long args[], int argcount);
int vterm_state_getpen(VTermState *state, long args[], int argcount);
void vterm_state_savepen(VTermState *state, int save);
enum {
C1_SS3 = 0x8f,
C1_DCS = 0x90,
C1_CSI = 0x9b,
C1_ST = 0x9c,
};
void vterm_state_push_output_sprintf_CSI(VTermState *vts, const char *format, ...);
void vterm_screen_free(VTermScreen *screen);
VTermEncoding *vterm_lookup_encoding(VTermEncodingType type, char designation);
int vterm_unicode_width(int codepoint);
int vterm_unicode_is_combining(int codepoint);
#endif
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