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vterm-module.h
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vterm-module.h
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#ifndef VTERM_MODULE_H
#define VTERM_MODULE_H
#include "emacs-module.h"
#include <inttypes.h>
#include <stdbool.h>
#include <vterm.h>
// https://gcc.gnu.org/wiki/Visibility
#if defined _WIN32 || defined __CYGWIN__
#ifdef __GNUC__
#define VTERM_EXPORT __attribute__((dllexport))
#else
#define VTERM_EXPORT __declspec(dllexport)
#endif
#else
#if __GNUC__ >= 4
#define VTERM_EXPORT __attribute__((visibility("default")))
#else
#define VTERM_EXPORT
#endif
#endif
VTERM_EXPORT int plugin_is_GPL_compatible;
#ifndef SB_MAX
#define SB_MAX 100000 // Maximum 'scrollback' value.
#endif
#ifndef MIN
#define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
#endif
#ifndef MAX
#define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
#endif
typedef struct LineInfo {
char *directory; /* working directory */
int prompt_col; /* end column of the prompt, if the current line contains the
* prompt */
} LineInfo;
typedef struct ScrollbackLine {
size_t cols;
LineInfo *info;
VTermScreenCell cells[];
} ScrollbackLine;
typedef struct ElispCodeListNode {
char *code;
size_t code_len;
struct ElispCodeListNode *next;
} ElispCodeListNode;
/* c , p , q , s , 0 , 1 , 2 , 3 , 4 , 5 , 6 , and 7 */
/* clipboard, primary, secondary, select, or cut buffers 0 through 7 */
#define SELECTION_BUF_LEN 4096
typedef struct Cursor {
int row, col;
int cursor_type;
bool cursor_visible;
bool cursor_blink;
bool cursor_type_changed;
bool cursor_blink_changed;
} Cursor;
typedef struct Term {
VTerm *vt;
VTermScreen *vts;
// buffer used to:
// - convert VTermScreen cell arrays into utf8 strings
// - receive data from libvterm as a result of key presses.
ScrollbackLine **sb_buffer; // Scrollback buffer storage for libvterm
size_t sb_current; // number of rows pushed to sb_buffer
size_t sb_size; // sb_buffer size
// "virtual index" that points to the first sb_buffer row that we need to
// push to the terminal buffer when refreshing the scrollback. When negative,
// it actually points to entries that are no longer in sb_buffer (because the
// window height has increased) and must be deleted from the terminal buffer
int sb_pending;
int sb_pending_by_height_decr;
bool sb_clear_pending;
long linenum;
long linenum_added;
int invalid_start, invalid_end; // invalid rows in libvterm screen
bool is_invalidated;
Cursor cursor;
char *title;
bool title_changed;
char *directory;
bool directory_changed;
// Single-linked list of elisp_code.
// Newer commands are added at the tail.
ElispCodeListNode *elisp_code_first;
ElispCodeListNode **elisp_code_p_insert; // pointer to the position where new
// node should be inserted
/* c , p , q , s , 0 , 1 , 2 , 3 , 4 , 5 , 6 , and 7 */
/* clipboard, primary, secondary, select, or cut buffers 0 through 7 */
int selection_mask; /* see VTermSelectionMask in vterm.h */
char *selection_data;
char selection_buf[SELECTION_BUF_LEN];
/* the size of dirs almost = window height, value = directory of that line */
LineInfo **lines;
int lines_len;
int width, height;
int height_resize;
bool resizing;
bool disable_bold_font;
bool disable_underline;
bool disable_inverse_video;
bool ignore_blink_cursor;
char *cmd_buffer;
int pty_fd;
} Term;
static bool compare_cells(VTermScreenCell *a, VTermScreenCell *b);
static bool is_key(unsigned char *key, size_t len, char *key_description);
static emacs_value render_text(emacs_env *env, Term *term, char *string,
int len, VTermScreenCell *cell);
static emacs_value render_fake_newline(emacs_env *env, Term *term);
static emacs_value render_prompt(emacs_env *env, emacs_value text);
static emacs_value cell_rgb_color(emacs_env *env, Term *term,
VTermScreenCell *cell, bool is_foreground);
static int term_settermprop(VTermProp prop, VTermValue *val, void *user_data);
static void term_redraw(Term *term, emacs_env *env);
static void term_flush_output(Term *term, emacs_env *env);
static void term_process_key(Term *term, emacs_env *env, unsigned char *key,
size_t len, VTermModifier modifier);
static void invalidate_terminal(Term *term, int start_row, int end_row);
void term_finalize(void *object);
emacs_value Fvterm_new(emacs_env *env, ptrdiff_t nargs, emacs_value args[],
void *data);
emacs_value Fvterm_update(emacs_env *env, ptrdiff_t nargs, emacs_value args[],
void *data);
emacs_value Fvterm_redraw(emacs_env *env, ptrdiff_t nargs, emacs_value args[],
void *data);
emacs_value Fvterm_write_input(emacs_env *env, ptrdiff_t nargs,
emacs_value args[], void *data);
emacs_value Fvterm_set_size(emacs_env *env, ptrdiff_t nargs, emacs_value args[],
void *data);
emacs_value Fvterm_set_pty_name(emacs_env *env, ptrdiff_t nargs,
emacs_value args[], void *data);
emacs_value Fvterm_get_icrnl(emacs_env *env, ptrdiff_t nargs,
emacs_value args[], void *data);
emacs_value Fvterm_get_pwd(emacs_env *env, ptrdiff_t nargs, emacs_value args[],
void *data);
emacs_value Fvterm_get_prompt_point(emacs_env *env, ptrdiff_t nargs,
emacs_value args[], void *data);
emacs_value Fvterm_reset_cursor_point(emacs_env *env, ptrdiff_t nargs,
emacs_value args[], void *data);
VTERM_EXPORT int emacs_module_init(struct emacs_runtime *ert);
#endif /* VTERM_MODULE_H */