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85eaaa86b7
If term->esc_query == -1 (reflecting an escape sequence in which the CSI is followed by a prefix character other than ?) then the ANSI macro shouldn't shift it left by 8, because that's undefined behaviour (although in practice I'd be very surprised if any compiler has actually miscompiled it yet). Multiplying it by 256 is a safe alternative which has the behaviour I wanted.
336 lines
9.6 KiB
C
336 lines
9.6 KiB
C
/*
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* Internals of the Terminal structure, for those other modules
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* which need to look inside it. It would be nice if this could be
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* folded back into terminal.c in future, with an abstraction layer
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* to handle everything that other modules need to know about it;
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* but for the moment, this will do.
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*/
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#ifndef PUTTY_TERMINAL_H
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#define PUTTY_TERMINAL_H
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#include "tree234.h"
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struct beeptime {
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struct beeptime *next;
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unsigned long ticks;
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};
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typedef struct {
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int y, x;
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} pos;
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typedef struct termchar termchar;
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typedef struct termline termline;
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struct termchar {
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/*
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* Any code in terminal.c which definitely needs to be changed
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* when extra fields are added here is labelled with a comment
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* saying FULL-TERMCHAR.
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*/
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unsigned long chr;
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unsigned long attr;
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truecolour truecolour;
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/*
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* The cc_next field is used to link multiple termchars
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* together into a list, so as to fit more than one character
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* into a character cell (Unicode combining characters).
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*
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* cc_next is a relative offset into the current array of
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* termchars. I.e. to advance to the next character in a list,
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* one does `tc += tc->next'.
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*
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* Zero means end of list.
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*/
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int cc_next;
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};
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struct termline {
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unsigned short lattr;
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int cols; /* number of real columns on the line */
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int size; /* number of allocated termchars
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* (cc-lists may make this > cols) */
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bool temporary; /* true if decompressed from scrollback */
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int cc_free; /* offset to first cc in free list */
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struct termchar *chars;
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};
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struct bidi_cache_entry {
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int width;
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struct termchar *chars;
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int *forward, *backward; /* the permutations of line positions */
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};
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struct terminal_tag {
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int compatibility_level;
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tree234 *scrollback; /* lines scrolled off top of screen */
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tree234 *screen; /* lines on primary screen */
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tree234 *alt_screen; /* lines on alternate screen */
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int disptop; /* distance scrolled back (0 or -ve) */
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int tempsblines; /* number of lines of .scrollback that
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can be retrieved onto the terminal
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("temporary scrollback") */
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termline **disptext; /* buffer of text on real screen */
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int dispcursx, dispcursy; /* location of cursor on real screen */
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int curstype; /* type of cursor on real screen */
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#define VBELL_TIMEOUT (TICKSPERSEC/10) /* visual bell lasts 1/10 sec */
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struct beeptime *beephead, *beeptail;
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int nbeeps;
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bool beep_overloaded;
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long lastbeep;
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#define TTYPE termchar
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#define TSIZE (sizeof(TTYPE))
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int default_attr, curr_attr, save_attr;
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truecolour curr_truecolour, save_truecolour;
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termchar basic_erase_char, erase_char;
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bufchain inbuf; /* terminal input buffer */
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pos curs; /* cursor */
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pos savecurs; /* saved cursor position */
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int marg_t, marg_b; /* scroll margins */
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bool dec_om; /* DEC origin mode flag */
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bool wrap, wrapnext; /* wrap flags */
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bool insert; /* insert-mode flag */
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int cset; /* 0 or 1: which char set */
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int save_cset, save_csattr; /* saved with cursor position */
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bool save_utf, save_wnext; /* saved with cursor position */
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bool rvideo; /* global reverse video flag */
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unsigned long rvbell_startpoint; /* for ESC[?5hESC[?5l vbell */
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bool cursor_on; /* cursor enabled flag */
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bool reset_132; /* Flag ESC c resets to 80 cols */
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bool use_bce; /* Use Background coloured erase */
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bool cblinker; /* When blinking is the cursor on ? */
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bool tblinker; /* When the blinking text is on */
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bool blink_is_real; /* Actually blink blinking text */
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bool term_echoing; /* Does terminal want local echo? */
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bool term_editing; /* Does terminal want local edit? */
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int sco_acs, save_sco_acs; /* CSI 10,11,12m -> OEM charset */
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bool vt52_bold; /* Force bold on non-bold colours */
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bool utf; /* Are we in toggleable UTF-8 mode? */
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int utf_state; /* Is there a pending UTF-8 character */
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int utf_char; /* and what is it so far. */
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int utf_size; /* The size of the UTF character. */
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bool printing, only_printing; /* Are we doing ANSI printing? */
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int print_state; /* state of print-end-sequence scan */
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bufchain printer_buf; /* buffered data for printer */
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printer_job *print_job;
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/* ESC 7 saved state for the alternate screen */
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pos alt_savecurs;
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int alt_save_attr;
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truecolour alt_save_truecolour;
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int alt_save_cset, alt_save_csattr;
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bool alt_save_utf;
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bool alt_save_wnext;
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int alt_save_sco_acs;
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int rows, cols, savelines;
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bool has_focus;
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bool in_vbell;
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long vbell_end;
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bool app_cursor_keys, app_keypad_keys, vt52_mode;
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bool repeat_off, cr_lf_return;
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bool seen_disp_event;
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bool big_cursor;
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int xterm_mouse; /* send mouse messages to host */
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bool xterm_extended_mouse;
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bool urxvt_extended_mouse;
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int mouse_is_down; /* used while tracking mouse buttons */
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bool bracketed_paste;
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int cset_attr[2];
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/*
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* Saved settings on the alternate screen.
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*/
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int alt_x, alt_y;
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bool alt_wnext, alt_ins;
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bool alt_om, alt_wrap;
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int alt_cset, alt_sco_acs;
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bool alt_utf;
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int alt_t, alt_b;
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int alt_which;
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int alt_sblines; /* # of lines on alternate screen that should be used for scrollback. */
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#define ARGS_MAX 32 /* max # of esc sequence arguments */
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#define ARG_DEFAULT 0 /* if an arg isn't specified */
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#define def(a,d) ( (a) == ARG_DEFAULT ? (d) : (a) )
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unsigned esc_args[ARGS_MAX];
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int esc_nargs;
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int esc_query;
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#define ANSI(x,y) ((x)+((y)*256))
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#define ANSI_QUE(x) ANSI(x,1)
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#define OSC_STR_MAX 2048
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int osc_strlen;
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char osc_string[OSC_STR_MAX + 1];
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bool osc_w;
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char id_string[1024];
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unsigned char *tabs;
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enum {
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TOPLEVEL,
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SEEN_ESC,
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SEEN_CSI,
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SEEN_OSC,
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SEEN_OSC_W,
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DO_CTRLS,
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SEEN_OSC_P,
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OSC_STRING, OSC_MAYBE_ST,
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VT52_ESC,
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VT52_Y1,
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VT52_Y2,
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VT52_FG,
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VT52_BG
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} termstate;
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enum {
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NO_SELECTION, ABOUT_TO, DRAGGING, SELECTED
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} selstate;
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enum {
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LEXICOGRAPHIC, RECTANGULAR
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} seltype;
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enum {
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SM_CHAR, SM_WORD, SM_LINE
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} selmode;
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pos selstart, selend, selanchor;
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short wordness[256];
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/* Mask of attributes to pay attention to when painting. */
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int attr_mask;
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wchar_t *paste_buffer;
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int paste_len, paste_pos;
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Backend *backend;
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Ldisc *ldisc;
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TermWin *win;
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LogContext *logctx;
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struct unicode_data *ucsdata;
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unsigned long last_graphic_char;
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/*
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* We maintain a full copy of a Conf here, not merely a pointer
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* to it. That way, when we're passed a new one for
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* reconfiguration, we can check the differences and adjust the
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* _current_ setting of (e.g.) auto wrap mode rather than only
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* the default.
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*/
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Conf *conf;
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/*
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* GUI implementations of seat_output call term_out, but it can
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* also be called from the ldisc if the ldisc is called _within_
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* term_out. So we have to guard against re-entrancy - if
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* seat_output is called recursively like this, it will simply add
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* data to the end of the buffer term_out is in the process of
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* working through.
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*/
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bool in_term_out;
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/*
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* We schedule a window update shortly after receiving terminal
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* data. This tracks whether one is currently pending.
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*/
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bool window_update_pending;
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long next_update;
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/*
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* Track pending blinks and tblinks.
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*/
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bool tblink_pending, cblink_pending;
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long next_tblink, next_cblink;
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/*
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* These are buffers used by the bidi and Arabic shaping code.
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*/
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termchar *ltemp;
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int ltemp_size;
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bidi_char *wcFrom, *wcTo;
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int wcFromTo_size;
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struct bidi_cache_entry *pre_bidi_cache, *post_bidi_cache;
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int bidi_cache_size;
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/*
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* We copy a bunch of stuff out of the Conf structure into local
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* fields in the Terminal structure, to avoid the repeated
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* tree234 lookups which would be involved in fetching them from
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* the former every time.
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*/
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bool ansi_colour;
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char *answerback;
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int answerbacklen;
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bool arabicshaping;
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int beep;
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bool bellovl;
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int bellovl_n;
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int bellovl_s;
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int bellovl_t;
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bool bidi;
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bool bksp_is_delete;
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bool blink_cur;
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bool blinktext;
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bool cjk_ambig_wide;
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int conf_height;
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int conf_width;
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bool crhaslf;
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bool erase_to_scrollback;
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int funky_type;
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bool lfhascr;
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bool logflush;
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int logtype;
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bool mouse_override;
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bool nethack_keypad;
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bool no_alt_screen;
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bool no_applic_c;
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bool no_applic_k;
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bool no_dbackspace;
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bool no_mouse_rep;
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bool no_remote_charset;
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bool no_remote_resize;
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bool no_remote_wintitle;
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bool no_remote_clearscroll;
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bool rawcnp;
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bool utf8linedraw;
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bool rect_select;
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int remote_qtitle_action;
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bool rxvt_homeend;
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bool scroll_on_disp;
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bool scroll_on_key;
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bool xterm_256_colour;
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bool true_colour;
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wchar_t *last_selected_text;
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int *last_selected_attr;
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truecolour *last_selected_tc;
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size_t last_selected_len;
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int mouse_select_clipboards[N_CLIPBOARDS];
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int n_mouse_select_clipboards;
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int mouse_paste_clipboard;
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};
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#define in_utf(term) ((term)->utf || (term)->ucsdata->line_codepage==CP_UTF8)
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#endif
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