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* Internals of the Terminal structure, for those other modules
* which need to look inside it. It would be nice if this could be
* folded back into terminal.c in future, with an abstraction layer
* to handle everything that other modules need to know about it;
* but for the moment, this will do.
#include "tree234.h"
struct beeptime {
struct beeptime *next;
unsigned long ticks;
typedef struct {
int y, x;
} pos;
struct scrollregion {
struct scrollregion *next;
int topline; /* Top line of scroll region. */
int botline; /* Bottom line of scroll region. */
int lines; /* Number of lines to scroll by - +ve is forwards. */
#endif /* OPTIMISE_SCROLL */
typedef struct termchar termchar;
typedef struct termline termline;
struct termchar {
* Any code in terminal.c which definitely needs to be changed
* when extra fields are added here is labelled with a comment
unsigned long chr;
unsigned long attr;
* The cc_next field is used to link multiple termchars
* together into a list, so as to fit more than one character
* into a character cell (Unicode combining characters).
* cc_next is a relative offset into the current array of
* termchars. I.e. to advance to the next character in a list,
* one does `tc += tc->next'.
* Zero means end of list.
int cc_next;
struct termline {
unsigned short lattr;
int cols; /* number of real columns on the line */
int size; /* number of allocated termchars
* (cc-lists may make this > cols) */
int temporary; /* TRUE if decompressed from scrollback */
int cc_free; /* offset to first cc in free list */
struct termchar *chars;
struct bidi_cache_entry {
int width;
struct termchar *chars;
int *forward, *backward; /* the permutations of line positions */
struct terminal_tag {
int compatibility_level;
tree234 *scrollback; /* lines scrolled off top of screen */
tree234 *screen; /* lines on primary screen */
tree234 *alt_screen; /* lines on alternate screen */
int disptop; /* distance scrolled back (0 or -ve) */
int tempsblines; /* number of lines of .scrollback that
can be retrieved onto the terminal
("temporary scrollback") */
termline **disptext; /* buffer of text on real screen */
int dispcursx, dispcursy; /* location of cursor on real screen */
int curstype; /* type of cursor on real screen */
#define VBELL_TIMEOUT (TICKSPERSEC/10) /* visual bell lasts 1/10 sec */
struct beeptime *beephead, *beeptail;
int nbeeps;
int beep_overloaded;
long lastbeep;
#define TTYPE termchar
#define TSIZE (sizeof(TTYPE))
struct scrollregion *scrollhead, *scrolltail;
#endif /* OPTIMISE_SCROLL */
int default_attr, curr_attr, save_attr;
termchar basic_erase_char, erase_char;
bufchain inbuf; /* terminal input buffer */
pos curs; /* cursor */
pos savecurs; /* saved cursor position */
int marg_t, marg_b; /* scroll margins */
int dec_om; /* DEC origin mode flag */
int wrap, wrapnext; /* wrap flags */
int insert; /* insert-mode flag */
int cset; /* 0 or 1: which char set */
int save_cset, save_csattr; /* saved with cursor position */
int save_utf, save_wnext; /* saved with cursor position */
int rvideo; /* global reverse video flag */
unsigned long rvbell_startpoint; /* for ESC[?5hESC[?5l vbell */
int cursor_on; /* cursor enabled flag */
int reset_132; /* Flag ESC c resets to 80 cols */
int use_bce; /* Use Background coloured erase */
int cblinker; /* When blinking is the cursor on ? */
int tblinker; /* When the blinking text is on */
int blink_is_real; /* Actually blink blinking text */
int term_echoing; /* Does terminal want local echo? */
int term_editing; /* Does terminal want local edit? */
int sco_acs, save_sco_acs; /* CSI 10,11,12m -> OEM charset */
int vt52_bold; /* Force bold on non-bold colours */
int utf; /* Are we in toggleable UTF-8 mode? */
int utf_state; /* Is there a pending UTF-8 character */
int utf_char; /* and what is it so far. */
int utf_size; /* The size of the UTF character. */
int printing, only_printing; /* Are we doing ANSI printing? */
int print_state; /* state of print-end-sequence scan */
bufchain printer_buf; /* buffered data for printer */
printer_job *print_job;
/* ESC 7 saved state for the alternate screen */
pos alt_savecurs;
int alt_save_attr;
int alt_save_cset, alt_save_csattr;
int alt_save_utf, alt_save_wnext;
int alt_save_sco_acs;
int rows, cols, savelines;
int has_focus;
int in_vbell;
long vbell_end;
int app_cursor_keys, app_keypad_keys, vt52_mode;
int repeat_off, cr_lf_return;
int seen_disp_event;
int big_cursor;
int xterm_mouse; /* send mouse messages to host */
int xterm_extended_mouse;
int urxvt_extended_mouse;
int mouse_is_down; /* used while tracking mouse buttons */
int bracketed_paste;
int cset_attr[2];
* Saved settings on the alternate screen.
int alt_x, alt_y, alt_om, alt_wrap, alt_wnext, alt_ins;
int alt_cset, alt_sco_acs, alt_utf;
int alt_t, alt_b;
int alt_which;
int alt_sblines; /* # of lines on alternate screen that should be used for scrollback. */
#define ARGS_MAX 32 /* max # of esc sequence arguments */
#define ARG_DEFAULT 0 /* if an arg isn't specified */
#define def(a,d) ( (a) == ARG_DEFAULT ? (d) : (a) )
unsigned esc_args[ARGS_MAX];
int esc_nargs;
int esc_query;
#define ANSI(x,y) ((x)+((y)<<8))
#define ANSI_QUE(x) ANSI(x,TRUE)
#define OSC_STR_MAX 2048
int osc_strlen;
char osc_string[OSC_STR_MAX + 1];
int osc_w;
char id_string[1024];
unsigned char *tabs;
enum {
} termstate;
enum {
} selstate;
enum {
} seltype;
enum {
} selmode;
pos selstart, selend, selanchor;
short wordness[256];
/* Mask of attributes to pay attention to when painting. */
int attr_mask;
wchar_t *paste_buffer;
int paste_len, paste_pos;
void (*resize_fn)(void *, int, int);
void *resize_ctx;
void *ldisc;
void *frontend;
void *logctx;
struct unicode_data *ucsdata;
* We maintain a full copy of a Conf here, not merely a pointer
* to it. That way, when we're passed a new one for
* reconfiguration, we can check the differences and adjust the
* _current_ setting of (e.g.) auto wrap mode rather than only
* the default.
Conf *conf;
* from_backend calls term_out, but it can also be called from
* the ldisc if the ldisc is called _within_ term_out. So we
* have to guard against re-entrancy - if from_backend is
* called recursively like this, it will simply add data to the
* end of the buffer term_out is in the process of working
* through.
int in_term_out;
* We schedule a window update shortly after receiving terminal
* data. This tracks whether one is currently pending.
int window_update_pending;
long next_update;
* Track pending blinks and tblinks.
int tblink_pending, cblink_pending;
long next_tblink, next_cblink;
* These are buffers used by the bidi and Arabic shaping code.
termchar *ltemp;
int ltemp_size;
bidi_char *wcFrom, *wcTo;
int wcFromTo_size;
struct bidi_cache_entry *pre_bidi_cache, *post_bidi_cache;
int bidi_cache_size;
* We copy a bunch of stuff out of the Conf structure into local
* fields in the Terminal structure, to avoid the repeated
* tree234 lookups which would be involved in fetching them from
* the former every time.
int ansi_colour;
char *answerback;
int answerbacklen;
int arabicshaping;
int beep;
int bellovl;
int bellovl_n;
int bellovl_s;
int bellovl_t;
int bidi;
int bksp_is_delete;
int blink_cur;
int blinktext;
int cjk_ambig_wide;
int conf_height;
int conf_width;
int crhaslf;
int erase_to_scrollback;
int funky_type;
int lfhascr;
int logflush;
int logtype;
int mouse_override;
int nethack_keypad;
int no_alt_screen;
int no_applic_c;
int no_applic_k;
int no_dbackspace;
int no_mouse_rep;
int no_remote_charset;
int no_remote_resize;
int no_remote_wintitle;
int no_remote_clearscroll;
int rawcnp;
int rect_select;
int remote_qtitle_action;
int rxvt_homeend;
int scroll_on_disp;
int scroll_on_key;
int xterm_256_colour;
#define in_utf(term) ((term)->utf || (term)->ucsdata->line_codepage==CP_UTF8)