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      1 /* $OpenBSD$ */
      2 
      3 /*
      4  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott (at) gmail.com>
      5  *
      6  * Permission to use, copy, modify, and distribute this software for any
      7  * purpose with or without fee is hereby granted, provided that the above
      8  * copyright notice and this permission notice appear in all copies.
      9  *
     10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
     11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     14  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
     15  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
     16  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     17  */
     18 
     19 #ifndef TMUX_H
     20 #define TMUX_H
     21 
     22 #include <sys/time.h>
     23 #include <sys/uio.h>
     24 
     25 #include <limits.h>
     26 #include <stdarg.h>
     27 #include <stdio.h>
     28 #include <termios.h>
     29 #include <wchar.h>
     30 
     31 #ifdef HAVE_UTEMPTER
     32 #include <utempter.h>
     33 #endif
     34 
     35 #include "compat.h"
     36 #include "tmux-protocol.h"
     37 #include "xmalloc.h"
     38 
     39 extern char   **environ;
     40 
     41 struct args;
     42 struct args_command_state;
     43 struct client;
     44 struct cmd;
     45 struct cmd_find_state;
     46 struct cmdq_item;
     47 struct cmdq_list;
     48 struct cmdq_state;
     49 struct cmds;
     50 struct control_state;
     51 struct environ;
     52 struct format_job_tree;
     53 struct format_tree;
     54 struct hyperlinks_uri;
     55 struct hyperlinks;
     56 struct input_ctx;
     57 struct input_request;
     58 struct input_requests;
     59 struct job;
     60 struct menu_data;
     61 struct mode_tree_data;
     62 struct mouse_event;
     63 struct options;
     64 struct options_array_item;
     65 struct options_entry;
     66 struct screen_write_citem;
     67 struct screen_write_cline;
     68 struct screen_write_ctx;
     69 struct session;
     70 
     71 #ifdef ENABLE_SIXEL
     72 struct sixel_image;
     73 #endif
     74 
     75 struct tty_ctx;
     76 struct tty_code;
     77 struct tty_key;
     78 struct tmuxpeer;
     79 struct tmuxproc;
     80 struct winlink;
     81 
     82 /* Default configuration files and socket paths. */
     83 #ifndef TMUX_CONF
     84 #define TMUX_CONF "/etc/tmux.conf:~/.tmux.conf"
     85 #endif
     86 #ifndef TMUX_SOCK
     87 #define TMUX_SOCK "$TMUX_TMPDIR:" _PATH_TMP
     88 #endif
     89 #ifndef TMUX_SOCK_PERM
     90 #define TMUX_SOCK_PERM (7 /* o+rwx */)
     91 #endif
     92 #ifndef TMUX_TERM
     93 #define TMUX_TERM "screen"
     94 #endif
     95 #ifndef TMUX_LOCK_CMD
     96 #define TMUX_LOCK_CMD "lock -np"
     97 #endif
     98 
     99 /* Minimum layout cell size, NOT including border lines. */
    100 #define PANE_MINIMUM 1
    101 
    102 /* Minimum and maximum window size. */
    103 #define WINDOW_MINIMUM PANE_MINIMUM
    104 #define WINDOW_MAXIMUM 10000
    105 
    106 /* Automatic name refresh interval, in microseconds. Must be < 1 second. */
    107 #define NAME_INTERVAL 500000
    108 
    109 /* Default pixel cell sizes. */
    110 #define DEFAULT_XPIXEL 16
    111 #define DEFAULT_YPIXEL 32
    112 
    113 /* Attribute to make GCC check printf-like arguments. */
    114 #define printflike(a, b) __attribute__ ((format (printf, a, b)))
    115 
    116 /* Number of items in array. */
    117 #ifndef nitems
    118 #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
    119 #endif
    120 
    121 /* Alert option values. */
    122 #define ALERT_NONE 0
    123 #define ALERT_ANY 1
    124 #define ALERT_CURRENT 2
    125 #define ALERT_OTHER 3
    126 
    127 /* Visual option values. */
    128 #define VISUAL_OFF 0
    129 #define VISUAL_ON 1
    130 #define VISUAL_BOTH 2
    131 
    132 /* No key or unknown key. */
    133 #define KEYC_NONE            0x000ff000000000ULL
    134 #define KEYC_UNKNOWN         0x000fe000000000ULL
    135 
    136 /*
    137  * Base for special (that is, not Unicode) keys. An enum must be at most a
    138  * signed int, so these are based in the highest Unicode PUA.
    139  */
    140 #define KEYC_BASE            0x0000000010e000ULL
    141 #define KEYC_USER            0x0000000010f000ULL
    142 #define KEYC_USER_END	     (KEYC_USER + KEYC_NUSER)
    143 
    144 /* Key modifier bits. */
    145 #define KEYC_META            0x00100000000000ULL
    146 #define KEYC_CTRL            0x00200000000000ULL
    147 #define KEYC_SHIFT           0x00400000000000ULL
    148 
    149 /* Key flag bits. */
    150 #define KEYC_LITERAL	     0x01000000000000ULL
    151 #define KEYC_KEYPAD	     0x02000000000000ULL
    152 #define KEYC_CURSOR	     0x04000000000000ULL
    153 #define KEYC_IMPLIED_META    0x08000000000000ULL
    154 #define KEYC_BUILD_MODIFIERS 0x10000000000000ULL
    155 #define KEYC_VI		     0x20000000000000ULL
    156 #define KEYC_SENT	     0x40000000000000ULL
    157 
    158 /* Masks for key bits. */
    159 #define KEYC_MASK_MODIFIERS  0x00f00000000000ULL
    160 #define KEYC_MASK_FLAGS      0xff000000000000ULL
    161 #define KEYC_MASK_KEY        0x000fffffffffffULL
    162 
    163 /* Available user keys. */
    164 #define KEYC_NUSER 1000
    165 
    166 /* Is this a mouse key? */
    167 #define KEYC_IS_MOUSE(key) \
    168 	(((key) & KEYC_MASK_KEY) >= KEYC_MOUSE && \
    169 	 ((key) & KEYC_MASK_KEY) < KEYC_BSPACE)
    170 
    171 /* Is this a Unicode key? */
    172 #define KEYC_IS_UNICODE(key) \
    173 	(((key) & KEYC_MASK_KEY) > 0x7f && \
    174 	 (((key) & KEYC_MASK_KEY) < KEYC_BASE || \
    175 	  ((key) & KEYC_MASK_KEY) >= KEYC_BASE_END) && \
    176 	 (((key) & KEYC_MASK_KEY) < KEYC_USER || \
    177 	  ((key) & KEYC_MASK_KEY) >= KEYC_USER_END))
    178 
    179 /* Is this a paste key? */
    180 #define KEYC_IS_PASTE(key) \
    181 	(((key) & KEYC_MASK_KEY) == KEYC_PASTE_START || \
    182 	 ((key) & KEYC_MASK_KEY) == KEYC_PASTE_END)
    183 
    184 /* Multiple click timeout. */
    185 #define KEYC_CLICK_TIMEOUT 300
    186 
    187 /* Mouse key codes. */
    188 #define KEYC_MOUSE_KEY(name)		    \
    189 	KEYC_ ## name ## _PANE,		    \
    190 	KEYC_ ## name ## _STATUS,	    \
    191 	KEYC_ ## name ## _STATUS_LEFT,	    \
    192 	KEYC_ ## name ## _STATUS_RIGHT,	    \
    193 	KEYC_ ## name ## _STATUS_DEFAULT,   \
    194 	KEYC_ ## name ## _SCROLLBAR_UP,	    \
    195 	KEYC_ ## name ## _SCROLLBAR_SLIDER, \
    196 	KEYC_ ## name ## _SCROLLBAR_DOWN,   \
    197 	KEYC_ ## name ## _BORDER
    198 #define KEYC_MOUSE_STRING(name, s)				      \
    199 	{ #s "Pane", KEYC_ ## name ## _PANE },			      \
    200 	{ #s "Status", KEYC_ ## name ## _STATUS },		      \
    201 	{ #s "StatusLeft", KEYC_ ## name ## _STATUS_LEFT },	      \
    202 	{ #s "StatusRight", KEYC_ ## name ## _STATUS_RIGHT },	      \
    203 	{ #s "StatusDefault", KEYC_ ## name ## _STATUS_DEFAULT },     \
    204 	{ #s "ScrollbarUp", KEYC_ ## name ## _SCROLLBAR_UP },         \
    205 	{ #s "ScrollbarSlider", KEYC_ ## name ## _SCROLLBAR_SLIDER }, \
    206 	{ #s "ScrollbarDown", KEYC_ ## name ## _SCROLLBAR_DOWN },     \
    207 	{ #s "Border", KEYC_ ## name ## _BORDER }
    208 
    209 /*
    210  * A single key. This can be ASCII or Unicode or one of the keys between
    211  * KEYC_BASE and KEYC_BASE_END.
    212  */
    213 typedef unsigned long long key_code;
    214 
    215 /* C0 control characters */
    216 enum {
    217 	C0_NUL,
    218 	C0_SOH,
    219 	C0_STX,
    220 	C0_ETX,
    221 	C0_EOT,
    222 	C0_ENQ,
    223 	C0_ASC,
    224 	C0_BEL,
    225 	C0_BS,
    226 	C0_HT,
    227 	C0_LF,
    228 	C0_VT,
    229 	C0_FF,
    230 	C0_CR,
    231 	C0_SO,
    232 	C0_SI,
    233 	C0_DLE,
    234 	C0_DC1,
    235 	C0_DC2,
    236 	C0_DC3,
    237 	C0_DC4,
    238 	C0_NAK,
    239 	C0_SYN,
    240 	C0_ETB,
    241 	C0_CAN,
    242 	C0_EM,
    243 	C0_SUB,
    244 	C0_ESC,
    245 	C0_FS,
    246 	C0_GS,
    247 	C0_RS,
    248 	C0_US
    249 };
    250 
    251 /* Special key codes. */
    252 enum {
    253 	/* Focus events. */
    254 	KEYC_FOCUS_IN = KEYC_BASE,
    255 	KEYC_FOCUS_OUT,
    256 
    257 	/* "Any" key, used if not found in key table. */
    258 	KEYC_ANY,
    259 
    260 	/* Paste brackets. */
    261 	KEYC_PASTE_START,
    262 	KEYC_PASTE_END,
    263 
    264 	/* Mouse keys. */
    265 	KEYC_MOUSE, /* unclassified mouse event */
    266 	KEYC_DRAGGING, /* dragging in progress */
    267 	KEYC_DOUBLECLICK, /* double click complete */
    268 	KEYC_MOUSE_KEY(MOUSEMOVE),
    269 	KEYC_MOUSE_KEY(MOUSEDOWN1),
    270 	KEYC_MOUSE_KEY(MOUSEDOWN2),
    271 	KEYC_MOUSE_KEY(MOUSEDOWN3),
    272 	KEYC_MOUSE_KEY(MOUSEDOWN6),
    273 	KEYC_MOUSE_KEY(MOUSEDOWN7),
    274 	KEYC_MOUSE_KEY(MOUSEDOWN8),
    275 	KEYC_MOUSE_KEY(MOUSEDOWN9),
    276 	KEYC_MOUSE_KEY(MOUSEDOWN10),
    277 	KEYC_MOUSE_KEY(MOUSEDOWN11),
    278 	KEYC_MOUSE_KEY(MOUSEUP1),
    279 	KEYC_MOUSE_KEY(MOUSEUP2),
    280 	KEYC_MOUSE_KEY(MOUSEUP3),
    281 	KEYC_MOUSE_KEY(MOUSEUP6),
    282 	KEYC_MOUSE_KEY(MOUSEUP7),
    283 	KEYC_MOUSE_KEY(MOUSEUP8),
    284 	KEYC_MOUSE_KEY(MOUSEUP9),
    285 	KEYC_MOUSE_KEY(MOUSEUP10),
    286 	KEYC_MOUSE_KEY(MOUSEUP11),
    287 	KEYC_MOUSE_KEY(MOUSEDRAG1),
    288 	KEYC_MOUSE_KEY(MOUSEDRAG2),
    289 	KEYC_MOUSE_KEY(MOUSEDRAG3),
    290 	KEYC_MOUSE_KEY(MOUSEDRAG6),
    291 	KEYC_MOUSE_KEY(MOUSEDRAG7),
    292 	KEYC_MOUSE_KEY(MOUSEDRAG8),
    293 	KEYC_MOUSE_KEY(MOUSEDRAG9),
    294 	KEYC_MOUSE_KEY(MOUSEDRAG10),
    295 	KEYC_MOUSE_KEY(MOUSEDRAG11),
    296 	KEYC_MOUSE_KEY(MOUSEDRAGEND1),
    297 	KEYC_MOUSE_KEY(MOUSEDRAGEND2),
    298 	KEYC_MOUSE_KEY(MOUSEDRAGEND3),
    299 	KEYC_MOUSE_KEY(MOUSEDRAGEND6),
    300 	KEYC_MOUSE_KEY(MOUSEDRAGEND7),
    301 	KEYC_MOUSE_KEY(MOUSEDRAGEND8),
    302 	KEYC_MOUSE_KEY(MOUSEDRAGEND9),
    303 	KEYC_MOUSE_KEY(MOUSEDRAGEND10),
    304 	KEYC_MOUSE_KEY(MOUSEDRAGEND11),
    305 	KEYC_MOUSE_KEY(WHEELUP),
    306 	KEYC_MOUSE_KEY(WHEELDOWN),
    307 	KEYC_MOUSE_KEY(SECONDCLICK1),
    308 	KEYC_MOUSE_KEY(SECONDCLICK2),
    309 	KEYC_MOUSE_KEY(SECONDCLICK3),
    310 	KEYC_MOUSE_KEY(SECONDCLICK6),
    311 	KEYC_MOUSE_KEY(SECONDCLICK7),
    312 	KEYC_MOUSE_KEY(SECONDCLICK8),
    313 	KEYC_MOUSE_KEY(SECONDCLICK9),
    314 	KEYC_MOUSE_KEY(SECONDCLICK10),
    315 	KEYC_MOUSE_KEY(SECONDCLICK11),
    316 	KEYC_MOUSE_KEY(DOUBLECLICK1),
    317 	KEYC_MOUSE_KEY(DOUBLECLICK2),
    318 	KEYC_MOUSE_KEY(DOUBLECLICK3),
    319 	KEYC_MOUSE_KEY(DOUBLECLICK6),
    320 	KEYC_MOUSE_KEY(DOUBLECLICK7),
    321 	KEYC_MOUSE_KEY(DOUBLECLICK8),
    322 	KEYC_MOUSE_KEY(DOUBLECLICK9),
    323 	KEYC_MOUSE_KEY(DOUBLECLICK10),
    324 	KEYC_MOUSE_KEY(DOUBLECLICK11),
    325 	KEYC_MOUSE_KEY(TRIPLECLICK1),
    326 	KEYC_MOUSE_KEY(TRIPLECLICK2),
    327 	KEYC_MOUSE_KEY(TRIPLECLICK3),
    328 	KEYC_MOUSE_KEY(TRIPLECLICK6),
    329 	KEYC_MOUSE_KEY(TRIPLECLICK7),
    330 	KEYC_MOUSE_KEY(TRIPLECLICK8),
    331 	KEYC_MOUSE_KEY(TRIPLECLICK9),
    332 	KEYC_MOUSE_KEY(TRIPLECLICK10),
    333 	KEYC_MOUSE_KEY(TRIPLECLICK11),
    334 
    335 	/* Backspace key. */
    336 	KEYC_BSPACE,
    337 
    338 	/* Function keys. */
    339 	KEYC_F1,
    340 	KEYC_F2,
    341 	KEYC_F3,
    342 	KEYC_F4,
    343 	KEYC_F5,
    344 	KEYC_F6,
    345 	KEYC_F7,
    346 	KEYC_F8,
    347 	KEYC_F9,
    348 	KEYC_F10,
    349 	KEYC_F11,
    350 	KEYC_F12,
    351 	KEYC_IC,
    352 	KEYC_DC,
    353 	KEYC_HOME,
    354 	KEYC_END,
    355 	KEYC_NPAGE,
    356 	KEYC_PPAGE,
    357 	KEYC_BTAB,
    358 
    359 	/* Arrow keys. */
    360 	KEYC_UP,
    361 	KEYC_DOWN,
    362 	KEYC_LEFT,
    363 	KEYC_RIGHT,
    364 
    365 	/* Numeric keypad. */
    366 	KEYC_KP_SLASH,
    367 	KEYC_KP_STAR,
    368 	KEYC_KP_MINUS,
    369 	KEYC_KP_SEVEN,
    370 	KEYC_KP_EIGHT,
    371 	KEYC_KP_NINE,
    372 	KEYC_KP_PLUS,
    373 	KEYC_KP_FOUR,
    374 	KEYC_KP_FIVE,
    375 	KEYC_KP_SIX,
    376 	KEYC_KP_ONE,
    377 	KEYC_KP_TWO,
    378 	KEYC_KP_THREE,
    379 	KEYC_KP_ENTER,
    380 	KEYC_KP_ZERO,
    381 	KEYC_KP_PERIOD,
    382 
    383 	/* Theme reporting. */
    384 	KEYC_REPORT_DARK_THEME,
    385 	KEYC_REPORT_LIGHT_THEME,
    386 
    387 	/* End of special keys. */
    388 	KEYC_BASE_END
    389 };
    390 
    391 /* Termcap codes. */
    392 enum tty_code_code {
    393 	TTYC_ACSC,
    394 	TTYC_AM,
    395 	TTYC_AX,
    396 	TTYC_BCE,
    397 	TTYC_BEL,
    398 	TTYC_BIDI,
    399 	TTYC_BLINK,
    400 	TTYC_BOLD,
    401 	TTYC_CIVIS,
    402 	TTYC_CLEAR,
    403 	TTYC_CLMG,
    404 	TTYC_CMG,
    405 	TTYC_CNORM,
    406 	TTYC_COLORS,
    407 	TTYC_CR,
    408 	TTYC_CS,
    409 	TTYC_CSR,
    410 	TTYC_CUB,
    411 	TTYC_CUB1,
    412 	TTYC_CUD,
    413 	TTYC_CUD1,
    414 	TTYC_CUF,
    415 	TTYC_CUF1,
    416 	TTYC_CUP,
    417 	TTYC_CUU,
    418 	TTYC_CUU1,
    419 	TTYC_CVVIS,
    420 	TTYC_DCH,
    421 	TTYC_DCH1,
    422 	TTYC_DIM,
    423 	TTYC_DL,
    424 	TTYC_DL1,
    425 	TTYC_DSBP,
    426 	TTYC_DSEKS,
    427 	TTYC_DSFCS,
    428 	TTYC_DSMG,
    429 	TTYC_E3,
    430 	TTYC_ECH,
    431 	TTYC_ED,
    432 	TTYC_EL,
    433 	TTYC_EL1,
    434 	TTYC_ENACS,
    435 	TTYC_ENBP,
    436 	TTYC_ENEKS,
    437 	TTYC_ENFCS,
    438 	TTYC_ENMG,
    439 	TTYC_FSL,
    440 	TTYC_HLS,
    441 	TTYC_HOME,
    442 	TTYC_HPA,
    443 	TTYC_ICH,
    444 	TTYC_ICH1,
    445 	TTYC_IL,
    446 	TTYC_IL1,
    447 	TTYC_INDN,
    448 	TTYC_INVIS,
    449 	TTYC_KCBT,
    450 	TTYC_KCUB1,
    451 	TTYC_KCUD1,
    452 	TTYC_KCUF1,
    453 	TTYC_KCUU1,
    454 	TTYC_KDC2,
    455 	TTYC_KDC3,
    456 	TTYC_KDC4,
    457 	TTYC_KDC5,
    458 	TTYC_KDC6,
    459 	TTYC_KDC7,
    460 	TTYC_KDCH1,
    461 	TTYC_KDN2,
    462 	TTYC_KDN3,
    463 	TTYC_KDN4,
    464 	TTYC_KDN5,
    465 	TTYC_KDN6,
    466 	TTYC_KDN7,
    467 	TTYC_KEND,
    468 	TTYC_KEND2,
    469 	TTYC_KEND3,
    470 	TTYC_KEND4,
    471 	TTYC_KEND5,
    472 	TTYC_KEND6,
    473 	TTYC_KEND7,
    474 	TTYC_KF1,
    475 	TTYC_KF10,
    476 	TTYC_KF11,
    477 	TTYC_KF12,
    478 	TTYC_KF13,
    479 	TTYC_KF14,
    480 	TTYC_KF15,
    481 	TTYC_KF16,
    482 	TTYC_KF17,
    483 	TTYC_KF18,
    484 	TTYC_KF19,
    485 	TTYC_KF2,
    486 	TTYC_KF20,
    487 	TTYC_KF21,
    488 	TTYC_KF22,
    489 	TTYC_KF23,
    490 	TTYC_KF24,
    491 	TTYC_KF25,
    492 	TTYC_KF26,
    493 	TTYC_KF27,
    494 	TTYC_KF28,
    495 	TTYC_KF29,
    496 	TTYC_KF3,
    497 	TTYC_KF30,
    498 	TTYC_KF31,
    499 	TTYC_KF32,
    500 	TTYC_KF33,
    501 	TTYC_KF34,
    502 	TTYC_KF35,
    503 	TTYC_KF36,
    504 	TTYC_KF37,
    505 	TTYC_KF38,
    506 	TTYC_KF39,
    507 	TTYC_KF4,
    508 	TTYC_KF40,
    509 	TTYC_KF41,
    510 	TTYC_KF42,
    511 	TTYC_KF43,
    512 	TTYC_KF44,
    513 	TTYC_KF45,
    514 	TTYC_KF46,
    515 	TTYC_KF47,
    516 	TTYC_KF48,
    517 	TTYC_KF49,
    518 	TTYC_KF5,
    519 	TTYC_KF50,
    520 	TTYC_KF51,
    521 	TTYC_KF52,
    522 	TTYC_KF53,
    523 	TTYC_KF54,
    524 	TTYC_KF55,
    525 	TTYC_KF56,
    526 	TTYC_KF57,
    527 	TTYC_KF58,
    528 	TTYC_KF59,
    529 	TTYC_KF6,
    530 	TTYC_KF60,
    531 	TTYC_KF61,
    532 	TTYC_KF62,
    533 	TTYC_KF63,
    534 	TTYC_KF7,
    535 	TTYC_KF8,
    536 	TTYC_KF9,
    537 	TTYC_KHOM2,
    538 	TTYC_KHOM3,
    539 	TTYC_KHOM4,
    540 	TTYC_KHOM5,
    541 	TTYC_KHOM6,
    542 	TTYC_KHOM7,
    543 	TTYC_KHOME,
    544 	TTYC_KIC2,
    545 	TTYC_KIC3,
    546 	TTYC_KIC4,
    547 	TTYC_KIC5,
    548 	TTYC_KIC6,
    549 	TTYC_KIC7,
    550 	TTYC_KICH1,
    551 	TTYC_KIND,
    552 	TTYC_KLFT2,
    553 	TTYC_KLFT3,
    554 	TTYC_KLFT4,
    555 	TTYC_KLFT5,
    556 	TTYC_KLFT6,
    557 	TTYC_KLFT7,
    558 	TTYC_KMOUS,
    559 	TTYC_KNP,
    560 	TTYC_KNXT2,
    561 	TTYC_KNXT3,
    562 	TTYC_KNXT4,
    563 	TTYC_KNXT5,
    564 	TTYC_KNXT6,
    565 	TTYC_KNXT7,
    566 	TTYC_KPP,
    567 	TTYC_KPRV2,
    568 	TTYC_KPRV3,
    569 	TTYC_KPRV4,
    570 	TTYC_KPRV5,
    571 	TTYC_KPRV6,
    572 	TTYC_KPRV7,
    573 	TTYC_KRI,
    574 	TTYC_KRIT2,
    575 	TTYC_KRIT3,
    576 	TTYC_KRIT4,
    577 	TTYC_KRIT5,
    578 	TTYC_KRIT6,
    579 	TTYC_KRIT7,
    580 	TTYC_KUP2,
    581 	TTYC_KUP3,
    582 	TTYC_KUP4,
    583 	TTYC_KUP5,
    584 	TTYC_KUP6,
    585 	TTYC_KUP7,
    586 	TTYC_MS,
    587 	TTYC_NOBR,
    588 	TTYC_OL,
    589 	TTYC_OP,
    590 	TTYC_RECT,
    591 	TTYC_REV,
    592 	TTYC_RGB,
    593 	TTYC_RI,
    594 	TTYC_RIN,
    595 	TTYC_RMACS,
    596 	TTYC_RMCUP,
    597 	TTYC_RMKX,
    598 	TTYC_SE,
    599 	TTYC_SETAB,
    600 	TTYC_SETAF,
    601 	TTYC_SETAL,
    602 	TTYC_SETRGBB,
    603 	TTYC_SETRGBF,
    604 	TTYC_SETULC,
    605 	TTYC_SETULC1,
    606 	TTYC_SGR0,
    607 	TTYC_SITM,
    608 	TTYC_SMACS,
    609 	TTYC_SMCUP,
    610 	TTYC_SMKX,
    611 	TTYC_SMOL,
    612 	TTYC_SMSO,
    613 	TTYC_SMUL,
    614 	TTYC_SMULX,
    615 	TTYC_SMXX,
    616 	TTYC_SXL,
    617 	TTYC_SS,
    618 	TTYC_SWD,
    619 	TTYC_SYNC,
    620 	TTYC_TC,
    621 	TTYC_TSL,
    622 	TTYC_U8,
    623 	TTYC_VPA,
    624 	TTYC_XT
    625 };
    626 
    627 /* Character classes. */
    628 #define WHITESPACE "\t "
    629 
    630 /* Mode keys. */
    631 #define MODEKEY_EMACS 0
    632 #define MODEKEY_VI 1
    633 
    634 /* Modes. */
    635 #define MODE_CURSOR 0x1
    636 #define MODE_INSERT 0x2
    637 #define MODE_KCURSOR 0x4
    638 #define MODE_KKEYPAD 0x8
    639 #define MODE_WRAP 0x10
    640 #define MODE_MOUSE_STANDARD 0x20
    641 #define MODE_MOUSE_BUTTON 0x40
    642 #define MODE_CURSOR_BLINKING 0x80
    643 #define MODE_MOUSE_UTF8 0x100
    644 #define MODE_MOUSE_SGR 0x200
    645 #define MODE_BRACKETPASTE 0x400
    646 #define MODE_FOCUSON 0x800
    647 #define MODE_MOUSE_ALL 0x1000
    648 #define MODE_ORIGIN 0x2000
    649 #define MODE_CRLF 0x4000
    650 #define MODE_KEYS_EXTENDED 0x8000
    651 #define MODE_CURSOR_VERY_VISIBLE 0x10000
    652 #define MODE_CURSOR_BLINKING_SET 0x20000
    653 #define MODE_KEYS_EXTENDED_2 0x40000
    654 #define MODE_THEME_UPDATES 0x80000
    655 
    656 #define ALL_MODES 0xffffff
    657 #define ALL_MOUSE_MODES (MODE_MOUSE_STANDARD|MODE_MOUSE_BUTTON|MODE_MOUSE_ALL)
    658 #define MOTION_MOUSE_MODES (MODE_MOUSE_BUTTON|MODE_MOUSE_ALL)
    659 #define CURSOR_MODES (MODE_CURSOR|MODE_CURSOR_BLINKING|MODE_CURSOR_VERY_VISIBLE)
    660 #define EXTENDED_KEY_MODES (MODE_KEYS_EXTENDED|MODE_KEYS_EXTENDED_2)
    661 
    662 /* Mouse protocol constants. */
    663 #define MOUSE_PARAM_MAX 0xff
    664 #define MOUSE_PARAM_UTF8_MAX 0x7ff
    665 #define MOUSE_PARAM_BTN_OFF 0x20
    666 #define MOUSE_PARAM_POS_OFF 0x21
    667 
    668 /* A single UTF-8 character. */
    669 typedef u_int utf8_char;
    670 
    671 /*
    672  * An expanded UTF-8 character. UTF8_SIZE must be big enough to hold combining
    673  * characters as well. It can't be more than 32 bytes without changes to how
    674  * characters are stored.
    675  */
    676 #define UTF8_SIZE 32
    677 struct utf8_data {
    678 	u_char	data[UTF8_SIZE];
    679 
    680 	u_char	have;
    681 	u_char	size;
    682 
    683 	u_char	width;	/* 0xff if invalid */
    684 };
    685 enum utf8_state {
    686 	UTF8_MORE,
    687 	UTF8_DONE,
    688 	UTF8_ERROR
    689 };
    690 
    691 /* State for processing of Korean characters. */
    692 enum hanguljamo_state {
    693 	HANGULJAMO_STATE_NOT_HANGULJAMO,
    694 	HANGULJAMO_STATE_CHOSEONG,
    695 	HANGULJAMO_STATE_COMPOSABLE,
    696 	HANGULJAMO_STATE_NOT_COMPOSABLE
    697 };
    698 
    699 /* Colour flags. */
    700 #define COLOUR_FLAG_256 0x01000000
    701 #define COLOUR_FLAG_RGB 0x02000000
    702 
    703 /* Special colours. */
    704 #define COLOUR_DEFAULT(c) ((c) == 8 || (c) == 9)
    705 
    706 /* Replacement palette. */
    707 struct colour_palette {
    708 	int	 fg;
    709 	int	 bg;
    710 
    711 	int	*palette;
    712 	int	*default_palette;
    713 };
    714 
    715 /* Grid attributes. Anything above 0xff is stored in an extended cell. */
    716 #define GRID_ATTR_BRIGHT 0x1
    717 #define GRID_ATTR_DIM 0x2
    718 #define GRID_ATTR_UNDERSCORE 0x4
    719 #define GRID_ATTR_BLINK 0x8
    720 #define GRID_ATTR_REVERSE 0x10
    721 #define GRID_ATTR_HIDDEN 0x20
    722 #define GRID_ATTR_ITALICS 0x40
    723 #define GRID_ATTR_CHARSET 0x80	/* alternative character set */
    724 #define GRID_ATTR_STRIKETHROUGH 0x100
    725 #define GRID_ATTR_UNDERSCORE_2 0x200
    726 #define GRID_ATTR_UNDERSCORE_3 0x400
    727 #define GRID_ATTR_UNDERSCORE_4 0x800
    728 #define GRID_ATTR_UNDERSCORE_5 0x1000
    729 #define GRID_ATTR_OVERLINE 0x2000
    730 #define GRID_ATTR_NOATTR 0x4000
    731 
    732 /* All underscore attributes. */
    733 #define GRID_ATTR_ALL_UNDERSCORE \
    734 	(GRID_ATTR_UNDERSCORE|	 \
    735 	 GRID_ATTR_UNDERSCORE_2| \
    736 	 GRID_ATTR_UNDERSCORE_3| \
    737 	 GRID_ATTR_UNDERSCORE_4| \
    738 	 GRID_ATTR_UNDERSCORE_5)
    739 
    740 /* Grid flags. */
    741 #define GRID_FLAG_FG256 0x1
    742 #define GRID_FLAG_BG256 0x2
    743 #define GRID_FLAG_PADDING 0x4
    744 #define GRID_FLAG_EXTENDED 0x8
    745 #define GRID_FLAG_SELECTED 0x10
    746 #define GRID_FLAG_NOPALETTE 0x20
    747 #define GRID_FLAG_CLEARED 0x40
    748 #define GRID_FLAG_TAB 0x80
    749 
    750 /* Grid line flags. */
    751 #define GRID_LINE_WRAPPED 0x1
    752 #define GRID_LINE_EXTENDED 0x2
    753 #define GRID_LINE_DEAD 0x4
    754 #define GRID_LINE_START_PROMPT 0x8
    755 #define GRID_LINE_START_OUTPUT 0x10
    756 
    757 /* Grid string flags. */
    758 #define GRID_STRING_WITH_SEQUENCES 0x1
    759 #define GRID_STRING_ESCAPE_SEQUENCES 0x2
    760 #define GRID_STRING_TRIM_SPACES 0x4
    761 #define GRID_STRING_USED_ONLY 0x8
    762 #define GRID_STRING_EMPTY_CELLS 0x10
    763 
    764 /* Cell positions. */
    765 #define CELL_INSIDE 0
    766 #define CELL_TOPBOTTOM 1
    767 #define CELL_LEFTRIGHT 2
    768 #define CELL_TOPLEFT 3
    769 #define CELL_TOPRIGHT 4
    770 #define CELL_BOTTOMLEFT 5
    771 #define CELL_BOTTOMRIGHT 6
    772 #define CELL_TOPJOIN 7
    773 #define CELL_BOTTOMJOIN 8
    774 #define CELL_LEFTJOIN 9
    775 #define CELL_RIGHTJOIN 10
    776 #define CELL_JOIN 11
    777 #define CELL_OUTSIDE 12
    778 #define CELL_SCROLLBAR 13
    779 
    780 /* Cell borders. */
    781 #define CELL_BORDERS " xqlkmjwvtun~"
    782 #define SIMPLE_BORDERS " |-+++++++++."
    783 #define PADDED_BORDERS "             "
    784 
    785 /* Grid cell data. */
    786 struct grid_cell {
    787 	struct utf8_data	data;
    788 	u_short			attr;
    789 	u_char			flags;
    790 	int			fg;
    791 	int			bg;
    792 	int			us;
    793 	u_int			link;
    794 };
    795 
    796 /* Grid extended cell entry. */
    797 struct grid_extd_entry {
    798 	utf8_char		data;
    799 	u_short			attr;
    800 	u_char			flags;
    801 	int			fg;
    802 	int			bg;
    803 	int			us;
    804 	u_int			link;
    805 } __packed;
    806 
    807 /* Grid cell entry. */
    808 struct grid_cell_entry {
    809 	union {
    810 		u_int		offset;
    811 		struct {
    812 			u_char	attr;
    813 			u_char	fg;
    814 			u_char	bg;
    815 			u_char	data;
    816 		} data;
    817 	};
    818 	u_char			flags;
    819 } __packed;
    820 
    821 /* Grid line. */
    822 struct grid_line {
    823 	struct grid_cell_entry	*celldata;
    824 	u_int			 cellused;
    825 	u_int			 cellsize;
    826 
    827 	struct grid_extd_entry	*extddata;
    828 	u_int			 extdsize;
    829 
    830 	int			 flags;
    831 	time_t			 time;
    832 };
    833 
    834 /* Entire grid of cells. */
    835 struct grid {
    836 	int			 flags;
    837 #define GRID_HISTORY 0x1 /* scroll lines into history */
    838 
    839 	u_int			 sx;
    840 	u_int			 sy;
    841 
    842 	u_int			 hscrolled;
    843 	u_int			 hsize;
    844 	u_int			 hlimit;
    845 
    846 	struct grid_line	*linedata;
    847 };
    848 
    849 /* Virtual cursor in a grid. */
    850 struct grid_reader {
    851 	struct grid	*gd;
    852 	u_int		 cx;
    853 	u_int		 cy;
    854 };
    855 
    856 /* Style alignment. */
    857 enum style_align {
    858 	STYLE_ALIGN_DEFAULT,
    859 	STYLE_ALIGN_LEFT,
    860 	STYLE_ALIGN_CENTRE,
    861 	STYLE_ALIGN_RIGHT,
    862 	STYLE_ALIGN_ABSOLUTE_CENTRE
    863 };
    864 
    865 /* Style list. */
    866 enum style_list {
    867 	STYLE_LIST_OFF,
    868 	STYLE_LIST_ON,
    869 	STYLE_LIST_FOCUS,
    870 	STYLE_LIST_LEFT_MARKER,
    871 	STYLE_LIST_RIGHT_MARKER,
    872 };
    873 
    874 /* Style range. */
    875 enum style_range_type {
    876 	STYLE_RANGE_NONE,
    877 	STYLE_RANGE_LEFT,
    878 	STYLE_RANGE_RIGHT,
    879 	STYLE_RANGE_PANE,
    880 	STYLE_RANGE_WINDOW,
    881 	STYLE_RANGE_SESSION,
    882 	STYLE_RANGE_USER
    883 };
    884 struct style_range {
    885 	enum style_range_type	 type;
    886 	u_int			 argument;
    887 	char			 string[16];
    888 
    889 	u_int			 start;
    890 	u_int			 end; /* not included */
    891 
    892 	TAILQ_ENTRY(style_range) entry;
    893 };
    894 TAILQ_HEAD(style_ranges, style_range);
    895 
    896 /* Default style width and pad. */
    897 #define STYLE_WIDTH_DEFAULT -1
    898 #define STYLE_PAD_DEFAULT -1
    899 
    900 /* Style default. */
    901 enum style_default_type {
    902 	STYLE_DEFAULT_BASE,
    903 	STYLE_DEFAULT_PUSH,
    904 	STYLE_DEFAULT_POP,
    905 	STYLE_DEFAULT_SET
    906 };
    907 
    908 /* Style option. */
    909 struct style {
    910 	struct grid_cell	gc;
    911 	int			ignore;
    912 
    913 	int			fill;
    914 	enum style_align	align;
    915 	enum style_list		list;
    916 
    917 	enum style_range_type	range_type;
    918 	u_int			range_argument;
    919 	char			range_string[16];
    920 
    921 	int			width;
    922 	int			pad;
    923 
    924 	enum style_default_type	default_type;
    925 };
    926 
    927 #ifdef ENABLE_SIXEL
    928 /* Image. */
    929 struct image {
    930 	struct screen		*s;
    931 	struct sixel_image	*data;
    932 	char			*fallback;
    933 
    934 	u_int			 px;
    935 	u_int			 py;
    936 	u_int			 sx;
    937 	u_int			 sy;
    938 
    939 	TAILQ_ENTRY (image)	 all_entry;
    940 	TAILQ_ENTRY (image)	 entry;
    941 };
    942 TAILQ_HEAD(images, image);
    943 #endif
    944 
    945 /* Cursor style. */
    946 enum screen_cursor_style {
    947 	SCREEN_CURSOR_DEFAULT,
    948 	SCREEN_CURSOR_BLOCK,
    949 	SCREEN_CURSOR_UNDERLINE,
    950 	SCREEN_CURSOR_BAR
    951 };
    952 
    953 /* Virtual screen. */
    954 struct screen_sel;
    955 struct screen_titles;
    956 struct screen {
    957 	char				*title;
    958 	char *path;
    959 	struct screen_titles		*titles;
    960 
    961 	struct grid			*grid;	  /* grid data */
    962 
    963 	u_int				 cx;	  /* cursor x */
    964 	u_int				 cy;	  /* cursor y */
    965 
    966 	enum screen_cursor_style	 cstyle;  /* cursor style */
    967 	enum screen_cursor_style	 default_cstyle;
    968 	int				 ccolour; /* cursor colour */
    969 	int				 default_ccolour;
    970 
    971 	u_int				 rupper;  /* scroll region top */
    972 	u_int				 rlower;  /* scroll region bottom */
    973 
    974 	int				 mode;
    975 	int				 default_mode;
    976 
    977 	u_int				 saved_cx;
    978 	u_int				 saved_cy;
    979 	struct grid			*saved_grid;
    980 	struct grid_cell		 saved_cell;
    981 	int				 saved_flags;
    982 
    983 	bitstr_t			*tabs;
    984 	struct screen_sel		*sel;
    985 
    986 #ifdef ENABLE_SIXEL
    987 	struct images			 images;
    988 	struct images			 saved_images;
    989 #endif
    990 
    991 	struct screen_write_cline	*write_list;
    992 
    993 	struct hyperlinks		*hyperlinks;
    994 };
    995 
    996 /* Screen write context. */
    997 typedef void (*screen_write_init_ctx_cb)(struct screen_write_ctx *,
    998     struct tty_ctx *);
    999 struct screen_write_ctx {
   1000 	struct window_pane		*wp;
   1001 	struct screen			*s;
   1002 
   1003 	int				 flags;
   1004 #define SCREEN_WRITE_SYNC 0x1
   1005 
   1006 	screen_write_init_ctx_cb	 init_ctx_cb;
   1007 	void				*arg;
   1008 
   1009 	struct screen_write_citem	*item;
   1010 	u_int				 scrolled;
   1011 	u_int				 bg;
   1012 };
   1013 
   1014 /* Box border lines option. */
   1015 enum box_lines {
   1016 	BOX_LINES_DEFAULT = -1,
   1017 	BOX_LINES_SINGLE,
   1018 	BOX_LINES_DOUBLE,
   1019 	BOX_LINES_HEAVY,
   1020 	BOX_LINES_SIMPLE,
   1021 	BOX_LINES_ROUNDED,
   1022 	BOX_LINES_PADDED,
   1023 	BOX_LINES_NONE
   1024 };
   1025 
   1026 /* Pane border lines option. */
   1027 enum pane_lines {
   1028 	PANE_LINES_SINGLE,
   1029 	PANE_LINES_DOUBLE,
   1030 	PANE_LINES_HEAVY,
   1031 	PANE_LINES_SIMPLE,
   1032 	PANE_LINES_NUMBER,
   1033 	PANE_LINES_SPACES
   1034 };
   1035 
   1036 /* Pane border indicator option. */
   1037 #define PANE_BORDER_OFF 0
   1038 #define PANE_BORDER_COLOUR 1
   1039 #define PANE_BORDER_ARROWS 2
   1040 #define PANE_BORDER_BOTH 3
   1041 
   1042 /* Mode returned by window_pane_mode function. */
   1043 #define WINDOW_PANE_NO_MODE 0
   1044 #define WINDOW_PANE_COPY_MODE 1
   1045 #define WINDOW_PANE_VIEW_MODE 2
   1046 
   1047 /* Screen redraw context. */
   1048 struct screen_redraw_ctx {
   1049 	struct client	*c;
   1050 
   1051 	u_int		 statuslines;
   1052 	int		 statustop;
   1053 
   1054 	int		 pane_status;
   1055 	enum pane_lines	 pane_lines;
   1056 
   1057 	int		 pane_scrollbars;
   1058 	int		 pane_scrollbars_pos;
   1059 
   1060 	struct grid_cell no_pane_gc;
   1061 	int		 no_pane_gc_set;
   1062 
   1063 	u_int		 sx;
   1064 	u_int		 sy;
   1065 	u_int		 ox;
   1066 	u_int		 oy;
   1067 };
   1068 
   1069 /* Screen size. */
   1070 #define screen_size_x(s) ((s)->grid->sx)
   1071 #define screen_size_y(s) ((s)->grid->sy)
   1072 #define screen_hsize(s) ((s)->grid->hsize)
   1073 #define screen_hlimit(s) ((s)->grid->hlimit)
   1074 
   1075 /* Menu. */
   1076 struct menu_item {
   1077 	const char	*name;
   1078 	key_code	 key;
   1079 	const char	*command;
   1080 };
   1081 struct menu {
   1082 	const char		*title;
   1083 	struct menu_item	*items;
   1084 	u_int			 count;
   1085 	u_int			 width;
   1086 };
   1087 typedef void (*menu_choice_cb)(struct menu *, u_int, key_code, void *);
   1088 
   1089 /*
   1090  * Window mode. Windows can be in several modes and this is used to call the
   1091  * right function to handle input and output.
   1092  */
   1093 struct window_mode_entry;
   1094 struct window_mode {
   1095 	const char	*name;
   1096 	const char	*default_format;
   1097 
   1098 	struct screen	*(*init)(struct window_mode_entry *,
   1099 			     struct cmd_find_state *, struct args *);
   1100 	void		 (*free)(struct window_mode_entry *);
   1101 	void		 (*resize)(struct window_mode_entry *, u_int, u_int);
   1102 	void		 (*update)(struct window_mode_entry *);
   1103 	void		 (*key)(struct window_mode_entry *, struct client *,
   1104 			     struct session *, struct winlink *, key_code,
   1105 			     struct mouse_event *);
   1106 
   1107 	const char	*(*key_table)(struct window_mode_entry *);
   1108 	void		 (*command)(struct window_mode_entry *, struct client *,
   1109 			     struct session *, struct winlink *, struct args *,
   1110 			     struct mouse_event *);
   1111 	void		 (*formats)(struct window_mode_entry *,
   1112 			     struct format_tree *);
   1113 	struct screen	*(*get_screen)(struct window_mode_entry *);
   1114 };
   1115 
   1116 /* Active window mode. */
   1117 struct window_mode_entry {
   1118 	struct window_pane		*wp;
   1119 	struct window_pane		*swp;
   1120 
   1121 	const struct window_mode	*mode;
   1122 	void				*data;
   1123 
   1124 	struct screen			*screen;
   1125 	u_int				 prefix;
   1126 
   1127 	TAILQ_ENTRY(window_mode_entry)	 entry;
   1128 };
   1129 
   1130 /* Type of request to client. */
   1131 enum input_request_type {
   1132 	INPUT_REQUEST_PALETTE,
   1133 	INPUT_REQUEST_QUEUE
   1134 };
   1135 
   1136 /* Palette request reply data. */
   1137 struct input_request_palette_data {
   1138 	int	idx;
   1139 	int	c;
   1140 };
   1141 
   1142 /* Request sent to client on behalf of pane. */
   1143 TAILQ_HEAD(input_requests, input_request);
   1144 
   1145 /* Offsets into pane buffer. */
   1146 struct window_pane_offset {
   1147 	size_t	used;
   1148 };
   1149 
   1150 /* Queued pane resize. */
   1151 struct window_pane_resize {
   1152 	u_int				sx;
   1153 	u_int				sy;
   1154 
   1155 	u_int				osx;
   1156 	u_int				osy;
   1157 
   1158 	TAILQ_ENTRY(window_pane_resize)	entry;
   1159 };
   1160 TAILQ_HEAD(window_pane_resizes, window_pane_resize);
   1161 
   1162 /* Child window structure. */
   1163 struct window_pane {
   1164 	u_int		 id;
   1165 	u_int		 active_point;
   1166 
   1167 	struct window	*window;
   1168 	struct options	*options;
   1169 
   1170 	struct layout_cell *layout_cell;
   1171 	struct layout_cell *saved_layout_cell;
   1172 
   1173 	u_int		 sx;
   1174 	u_int		 sy;
   1175 
   1176 	u_int		 xoff;
   1177 	u_int		 yoff;
   1178 
   1179 	int		 flags;
   1180 #define PANE_REDRAW 0x1
   1181 #define PANE_DROP 0x2
   1182 #define PANE_FOCUSED 0x4
   1183 #define PANE_VISITED 0x8
   1184 /* 0x10 unused */
   1185 /* 0x20 unused */
   1186 #define PANE_INPUTOFF 0x40
   1187 #define PANE_CHANGED 0x80
   1188 #define PANE_EXITED 0x100
   1189 #define PANE_STATUSREADY 0x200
   1190 #define PANE_STATUSDRAWN 0x400
   1191 #define PANE_EMPTY 0x800
   1192 #define PANE_STYLECHANGED 0x1000
   1193 #define PANE_THEMECHANGED 0x2000
   1194 #define PANE_UNSEENCHANGES 0x4000
   1195 #define PANE_REDRAWSCROLLBAR 0x8000
   1196 
   1197 	u_int		 sb_slider_y;
   1198 	u_int		 sb_slider_h;
   1199 
   1200 	int		 argc;
   1201 	char	       **argv;
   1202 	char		*shell;
   1203 	char		*cwd;
   1204 
   1205 	pid_t		 pid;
   1206 	char		 tty[TTY_NAME_MAX];
   1207 	int		 status;
   1208 	struct timeval	 dead_time;
   1209 
   1210 	int		 fd;
   1211 	struct bufferevent *event;
   1212 
   1213 	struct window_pane_offset offset;
   1214 	size_t		 base_offset;
   1215 
   1216 	struct window_pane_resizes resize_queue;
   1217 	struct event	 resize_timer;
   1218 
   1219 	struct input_ctx *ictx;
   1220 
   1221 	struct grid_cell cached_gc;
   1222 	struct grid_cell cached_active_gc;
   1223 	struct colour_palette palette;
   1224 
   1225 	int		 pipe_fd;
   1226 	struct bufferevent *pipe_event;
   1227 	struct window_pane_offset pipe_offset;
   1228 
   1229 	struct screen	*screen;
   1230 	struct screen	 base;
   1231 
   1232 	struct screen	 status_screen;
   1233 	size_t		 status_size;
   1234 
   1235 	TAILQ_HEAD(, window_mode_entry) modes;
   1236 
   1237 	char		*searchstr;
   1238 	int		 searchregex;
   1239 
   1240 	int		 border_gc_set;
   1241 	struct grid_cell border_gc;
   1242 
   1243 	int		 control_bg;
   1244 	int		 control_fg;
   1245 
   1246 	struct style	 scrollbar_style;
   1247 
   1248 	TAILQ_ENTRY(window_pane) entry;  /* link in list of all panes */
   1249 	TAILQ_ENTRY(window_pane) sentry; /* link in list of last visited */
   1250 	RB_ENTRY(window_pane) tree_entry;
   1251 };
   1252 TAILQ_HEAD(window_panes, window_pane);
   1253 RB_HEAD(window_pane_tree, window_pane);
   1254 
   1255 /* Window structure. */
   1256 struct window {
   1257 	u_int			 id;
   1258 	void			*latest;
   1259 
   1260 	char			*name;
   1261 	struct event		 name_event;
   1262 	struct timeval		 name_time;
   1263 
   1264 	struct event		 alerts_timer;
   1265 	struct event		 offset_timer;
   1266 
   1267 	struct timeval		 activity_time;
   1268 
   1269 	struct window_pane	*active;
   1270 	struct window_panes 	 last_panes;
   1271 	struct window_panes	 panes;
   1272 
   1273 	int			 lastlayout;
   1274 	struct layout_cell	*layout_root;
   1275 	struct layout_cell	*saved_layout_root;
   1276 	char			*old_layout;
   1277 
   1278 	u_int			 sx;
   1279 	u_int			 sy;
   1280 	u_int			 manual_sx;
   1281 	u_int			 manual_sy;
   1282 	u_int			 xpixel;
   1283 	u_int			 ypixel;
   1284 
   1285 	u_int			 new_sx;
   1286 	u_int			 new_sy;
   1287 	u_int			 new_xpixel;
   1288 	u_int			 new_ypixel;
   1289 
   1290 	struct utf8_data	*fill_character;
   1291 	int			 flags;
   1292 #define WINDOW_BELL 0x1
   1293 #define WINDOW_ACTIVITY 0x2
   1294 #define WINDOW_SILENCE 0x4
   1295 #define WINDOW_ZOOMED 0x8
   1296 #define WINDOW_WASZOOMED 0x10
   1297 #define WINDOW_RESIZE 0x20
   1298 #define WINDOW_ALERTFLAGS (WINDOW_BELL|WINDOW_ACTIVITY|WINDOW_SILENCE)
   1299 
   1300 	int			 alerts_queued;
   1301 	TAILQ_ENTRY(window)	 alerts_entry;
   1302 
   1303 	struct options		*options;
   1304 
   1305 	u_int			 references;
   1306 	TAILQ_HEAD(, winlink)	 winlinks;
   1307 
   1308 	RB_ENTRY(window)	 entry;
   1309 };
   1310 RB_HEAD(windows, window);
   1311 
   1312 /* Entry on local window list. */
   1313 struct winlink {
   1314 	int		 idx;
   1315 	struct session	*session;
   1316 	struct window	*window;
   1317 
   1318 	int		 flags;
   1319 #define WINLINK_BELL 0x1
   1320 #define WINLINK_ACTIVITY 0x2
   1321 #define WINLINK_SILENCE 0x4
   1322 #define WINLINK_ALERTFLAGS (WINLINK_BELL|WINLINK_ACTIVITY|WINLINK_SILENCE)
   1323 #define WINLINK_VISITED 0x8
   1324 
   1325 	RB_ENTRY(winlink) entry;
   1326 	TAILQ_ENTRY(winlink) wentry;
   1327 	TAILQ_ENTRY(winlink) sentry;
   1328 };
   1329 RB_HEAD(winlinks, winlink);
   1330 TAILQ_HEAD(winlink_stack, winlink);
   1331 
   1332 /* Window size option. */
   1333 #define WINDOW_SIZE_LARGEST 0
   1334 #define WINDOW_SIZE_SMALLEST 1
   1335 #define WINDOW_SIZE_MANUAL 2
   1336 #define WINDOW_SIZE_LATEST 3
   1337 
   1338 /* Pane border status option. */
   1339 #define PANE_STATUS_OFF 0
   1340 #define PANE_STATUS_TOP 1
   1341 #define PANE_STATUS_BOTTOM 2
   1342 
   1343 /* Pane scrollbars option. */
   1344 #define PANE_SCROLLBARS_OFF 0
   1345 #define PANE_SCROLLBARS_MODAL 1
   1346 #define PANE_SCROLLBARS_ALWAYS 2
   1347 
   1348 /* Pane scrollbars position option. */
   1349 #define PANE_SCROLLBARS_RIGHT 0
   1350 #define PANE_SCROLLBARS_LEFT 1
   1351 
   1352 /* Pane scrollbars width, padding and fill character. */
   1353 #define PANE_SCROLLBARS_DEFAULT_PADDING 0
   1354 #define PANE_SCROLLBARS_DEFAULT_WIDTH 1
   1355 #define PANE_SCROLLBARS_CHARACTER ' '
   1356 
   1357 /* True if screen in alternate screen. */
   1358 #define SCREEN_IS_ALTERNATE(s) ((s)->saved_grid != NULL)
   1359 
   1360 /* Layout direction. */
   1361 enum layout_type {
   1362 	LAYOUT_LEFTRIGHT,
   1363 	LAYOUT_TOPBOTTOM,
   1364 	LAYOUT_WINDOWPANE
   1365 };
   1366 
   1367 /* Layout cells queue. */
   1368 TAILQ_HEAD(layout_cells, layout_cell);
   1369 
   1370 /* Layout cell. */
   1371 struct layout_cell {
   1372 	enum layout_type type;
   1373 
   1374 	struct layout_cell *parent;
   1375 
   1376 	u_int		 sx;
   1377 	u_int		 sy;
   1378 
   1379 	u_int		 xoff;
   1380 	u_int		 yoff;
   1381 
   1382 	struct window_pane *wp;
   1383 	struct layout_cells cells;
   1384 
   1385 	TAILQ_ENTRY(layout_cell) entry;
   1386 };
   1387 
   1388 /* Environment variable. */
   1389 struct environ_entry {
   1390 	char		*name;
   1391 	char		*value;
   1392 
   1393 	int		 flags;
   1394 #define ENVIRON_HIDDEN 0x1
   1395 
   1396 	RB_ENTRY(environ_entry) entry;
   1397 };
   1398 
   1399 /* Client session. */
   1400 struct session_group {
   1401 	const char		*name;
   1402 	TAILQ_HEAD(, session)	 sessions;
   1403 
   1404 	RB_ENTRY(session_group)	 entry;
   1405 };
   1406 RB_HEAD(session_groups, session_group);
   1407 
   1408 struct session {
   1409 	u_int		 id;
   1410 
   1411 	char		*name;
   1412 	const char	*cwd;
   1413 
   1414 	struct timeval	 creation_time;
   1415 	struct timeval	 last_attached_time;
   1416 	struct timeval	 activity_time;
   1417 	struct timeval	 last_activity_time;
   1418 
   1419 	struct event	 lock_timer;
   1420 
   1421 	struct winlink	*curw;
   1422 	struct winlink_stack lastw;
   1423 	struct winlinks	 windows;
   1424 
   1425 	int		 statusat;
   1426 	u_int		 statuslines;
   1427 
   1428 	struct options	*options;
   1429 
   1430 #define SESSION_ALERTED 0x1
   1431 	int		 flags;
   1432 
   1433 	u_int		 attached;
   1434 
   1435 	struct termios	*tio;
   1436 
   1437 	struct environ	*environ;
   1438 
   1439 	int		 references;
   1440 
   1441 	TAILQ_ENTRY(session) gentry;
   1442 	RB_ENTRY(session)    entry;
   1443 };
   1444 RB_HEAD(sessions, session);
   1445 
   1446 /* Mouse button masks. */
   1447 #define MOUSE_MASK_BUTTONS 195
   1448 #define MOUSE_MASK_SHIFT 4
   1449 #define MOUSE_MASK_META 8
   1450 #define MOUSE_MASK_CTRL 16
   1451 #define MOUSE_MASK_DRAG 32
   1452 #define MOUSE_MASK_MODIFIERS (MOUSE_MASK_SHIFT|MOUSE_MASK_META|MOUSE_MASK_CTRL)
   1453 
   1454 /* Mouse wheel type. */
   1455 #define MOUSE_WHEEL_UP 64
   1456 #define MOUSE_WHEEL_DOWN 65
   1457 
   1458 /* Mouse button type. */
   1459 #define MOUSE_BUTTON_1 0
   1460 #define MOUSE_BUTTON_2 1
   1461 #define MOUSE_BUTTON_3 2
   1462 #define MOUSE_BUTTON_6 66
   1463 #define MOUSE_BUTTON_7 67
   1464 #define MOUSE_BUTTON_8 128
   1465 #define MOUSE_BUTTON_9 129
   1466 #define MOUSE_BUTTON_10 130
   1467 #define MOUSE_BUTTON_11 131
   1468 
   1469 /* Mouse helpers. */
   1470 #define MOUSE_BUTTONS(b) ((b) & MOUSE_MASK_BUTTONS)
   1471 #define MOUSE_WHEEL(b) \
   1472 	(((b) & MOUSE_MASK_BUTTONS) == MOUSE_WHEEL_UP || \
   1473 	 ((b) & MOUSE_MASK_BUTTONS) == MOUSE_WHEEL_DOWN)
   1474 #define MOUSE_DRAG(b) ((b) & MOUSE_MASK_DRAG)
   1475 #define MOUSE_RELEASE(b) (((b) & MOUSE_MASK_BUTTONS) == 3)
   1476 
   1477 /* Mouse input. */
   1478 struct mouse_event {
   1479 	int		valid;
   1480 	int		ignore;
   1481 
   1482 	key_code	key;
   1483 
   1484 	int		statusat;
   1485 	u_int		statuslines;
   1486 
   1487 	u_int		x;
   1488 	u_int		y;
   1489 	u_int		b;
   1490 
   1491 	u_int		lx;
   1492 	u_int		ly;
   1493 	u_int		lb;
   1494 
   1495 	u_int		ox;
   1496 	u_int		oy;
   1497 
   1498 	int		s;
   1499 	int		w;
   1500 	int		wp;
   1501 
   1502 	u_int		sgr_type;
   1503 	u_int		sgr_b;
   1504 };
   1505 
   1506 /* Key event. */
   1507 struct key_event {
   1508 	key_code		 key;
   1509 	struct mouse_event	 m;
   1510 
   1511 	char			*buf;
   1512 	size_t			 len;
   1513 };
   1514 
   1515 /* Terminal definition. */
   1516 struct tty_term {
   1517 	char		*name;
   1518 	struct tty	*tty;
   1519 	int		 features;
   1520 
   1521 	char		 acs[UCHAR_MAX + 1][2];
   1522 
   1523 	struct tty_code	*codes;
   1524 
   1525 #define TERM_256COLOURS 0x1
   1526 #define TERM_NOAM 0x2
   1527 #define TERM_DECSLRM 0x4
   1528 #define TERM_DECFRA 0x8
   1529 #define TERM_RGBCOLOURS 0x10
   1530 #define TERM_VT100LIKE 0x20
   1531 #define TERM_SIXEL 0x40
   1532 	int		 flags;
   1533 
   1534 	LIST_ENTRY(tty_term) entry;
   1535 };
   1536 LIST_HEAD(tty_terms, tty_term);
   1537 
   1538 /* Client terminal. */
   1539 struct tty {
   1540 	struct client	*client;
   1541 	struct event	 start_timer;
   1542 	struct event	 clipboard_timer;
   1543 	time_t		 last_requests;
   1544 
   1545 	u_int		 sx;
   1546 	u_int		 sy;
   1547         /* Cell size in pixels. */
   1548 	u_int		 xpixel;
   1549 	u_int		 ypixel;
   1550 
   1551 	u_int		 cx;
   1552 	u_int		 cy;
   1553 	enum screen_cursor_style cstyle;
   1554 	int		 ccolour;
   1555 
   1556         /* Properties of the area being drawn on. */
   1557         /* When true, the drawing area is bigger than the terminal. */
   1558 	int		 oflag;
   1559 	u_int		 oox;
   1560 	u_int		 ooy;
   1561 	u_int		 osx;
   1562 	u_int		 osy;
   1563 
   1564 	int		 mode;
   1565 	int              fg;
   1566 	int              bg;
   1567 
   1568 	u_int		 rlower;
   1569 	u_int		 rupper;
   1570 
   1571 	u_int		 rleft;
   1572 	u_int		 rright;
   1573 
   1574 	struct event	 event_in;
   1575 	struct evbuffer	*in;
   1576 	struct event	 event_out;
   1577 	struct evbuffer	*out;
   1578 	struct event	 timer;
   1579 	size_t		 discarded;
   1580 
   1581 	struct termios	 tio;
   1582 
   1583 	struct grid_cell cell;
   1584 	struct grid_cell last_cell;
   1585 
   1586 #define TTY_NOCURSOR 0x1
   1587 #define TTY_FREEZE 0x2
   1588 #define TTY_TIMER 0x4
   1589 #define TTY_NOBLOCK 0x8
   1590 #define TTY_STARTED 0x10
   1591 #define TTY_OPENED 0x20
   1592 #define TTY_OSC52QUERY 0x40
   1593 #define TTY_BLOCK 0x80
   1594 #define TTY_HAVEDA 0x100
   1595 #define TTY_HAVEXDA 0x200
   1596 #define TTY_SYNCING 0x400
   1597 #define TTY_HAVEDA2 0x800
   1598 #define TTY_WINSIZEQUERY 0x1000
   1599 #define TTY_WAITFG 0x2000
   1600 #define TTY_WAITBG 0x4000
   1601 #define TTY_ALL_REQUEST_FLAGS \
   1602 	(TTY_HAVEDA|TTY_HAVEDA2|TTY_HAVEXDA)
   1603 	int		 flags;
   1604 
   1605 	struct tty_term	*term;
   1606 
   1607 	u_int		 mouse_last_x;
   1608 	u_int		 mouse_last_y;
   1609 	u_int		 mouse_last_b;
   1610 	int		 mouse_drag_flag;
   1611 	int		 mouse_scrolling_flag;
   1612 	int		 mouse_slider_mpos;
   1613 
   1614 	void		(*mouse_drag_update)(struct client *,
   1615 			    struct mouse_event *);
   1616 	void		(*mouse_drag_release)(struct client *,
   1617 			    struct mouse_event *);
   1618 
   1619 	struct event	 key_timer;
   1620 	struct tty_key	*key_tree;
   1621 };
   1622 
   1623 /* Terminal command context. */
   1624 typedef void (*tty_ctx_redraw_cb)(const struct tty_ctx *);
   1625 typedef int (*tty_ctx_set_client_cb)(struct tty_ctx *, struct client *);
   1626 struct tty_ctx {
   1627 	struct screen		*s;
   1628 
   1629 	tty_ctx_redraw_cb	 redraw_cb;
   1630 	tty_ctx_set_client_cb	 set_client_cb;
   1631 	void			*arg;
   1632 
   1633 	const struct grid_cell	*cell;
   1634 	int			 wrapped;
   1635 
   1636 	u_int			 num;
   1637 	void			*ptr;
   1638 	void			*ptr2;
   1639 
   1640 	/*
   1641 	 * Whether this command should be sent even when the pane is not
   1642 	 * visible (used for a passthrough sequence when allow-passthrough is
   1643 	 * "all").
   1644 	 */
   1645 	int			 allow_invisible_panes;
   1646 
   1647 	/*
   1648 	 * Cursor and region position before the screen was updated - this is
   1649 	 * where the command should be applied; the values in the screen have
   1650 	 * already been updated.
   1651 	 */
   1652 	u_int			 ocx;
   1653 	u_int			 ocy;
   1654 
   1655 	u_int			 orupper;
   1656 	u_int			 orlower;
   1657 
   1658 	/* Target region (usually pane) offset and size. */
   1659 	u_int			 xoff;
   1660 	u_int			 yoff;
   1661 	u_int			 rxoff;
   1662 	u_int			 ryoff;
   1663 	u_int			 sx;
   1664 	u_int			 sy;
   1665 
   1666 	/* The background colour used for clearing (erasing). */
   1667 	u_int			 bg;
   1668 
   1669 	/* The default colours and palette. */
   1670 	struct grid_cell	 defaults;
   1671 	struct colour_palette	*palette;
   1672 
   1673 	/* Containing region (usually window) offset and size. */
   1674 	int			 bigger;
   1675 	u_int			 wox;
   1676 	u_int			 woy;
   1677 	u_int			 wsx;
   1678 	u_int			 wsy;
   1679 };
   1680 
   1681 /* Saved message entry. */
   1682 struct message_entry {
   1683 	char				*msg;
   1684 	u_int				 msg_num;
   1685 	struct timeval			 msg_time;
   1686 
   1687 	TAILQ_ENTRY(message_entry)	 entry;
   1688 };
   1689 TAILQ_HEAD(message_list, message_entry);
   1690 
   1691 /* Argument type. */
   1692 enum args_type {
   1693 	ARGS_NONE,
   1694 	ARGS_STRING,
   1695 	ARGS_COMMANDS
   1696 };
   1697 
   1698 /* Argument value. */
   1699 struct args_value {
   1700 	enum args_type		 type;
   1701 	union {
   1702 		char		*string;
   1703 		struct cmd_list	*cmdlist;
   1704 	};
   1705 	char			*cached;
   1706 	TAILQ_ENTRY(args_value)	 entry;
   1707 };
   1708 
   1709 /* Arguments set. */
   1710 struct args_entry;
   1711 RB_HEAD(args_tree, args_entry);
   1712 
   1713 /* Arguments parsing type. */
   1714 enum args_parse_type {
   1715 	ARGS_PARSE_INVALID,
   1716 	ARGS_PARSE_STRING,
   1717 	ARGS_PARSE_COMMANDS_OR_STRING,
   1718 	ARGS_PARSE_COMMANDS
   1719 };
   1720 
   1721 /* Arguments parsing state. */
   1722 typedef enum args_parse_type (*args_parse_cb)(struct args *, u_int, char **);
   1723 struct args_parse {
   1724 	const char	*template;
   1725 	int		 lower;
   1726 	int		 upper;
   1727 	args_parse_cb	 cb;
   1728 };
   1729 
   1730 /* Command find structures. */
   1731 enum cmd_find_type {
   1732 	CMD_FIND_PANE,
   1733 	CMD_FIND_WINDOW,
   1734 	CMD_FIND_SESSION,
   1735 };
   1736 struct cmd_find_state {
   1737 	int			 flags;
   1738 	struct cmd_find_state	*current;
   1739 
   1740 	struct session		*s;
   1741 	struct winlink		*wl;
   1742 	struct window		*w;
   1743 	struct window_pane	*wp;
   1744 	int			 idx;
   1745 };
   1746 
   1747 /* Command find flags. */
   1748 #define CMD_FIND_PREFER_UNATTACHED 0x1
   1749 #define CMD_FIND_QUIET 0x2
   1750 #define CMD_FIND_WINDOW_INDEX 0x4
   1751 #define CMD_FIND_DEFAULT_MARKED 0x8
   1752 #define CMD_FIND_EXACT_SESSION 0x10
   1753 #define CMD_FIND_EXACT_WINDOW 0x20
   1754 #define CMD_FIND_CANFAIL 0x40
   1755 
   1756 /* List of commands. */
   1757 struct cmd_list {
   1758 	int		 references;
   1759 	u_int		 group;
   1760 	struct cmds	*list;
   1761 };
   1762 
   1763 /* Command return values. */
   1764 enum cmd_retval {
   1765 	CMD_RETURN_ERROR = -1,
   1766 	CMD_RETURN_NORMAL = 0,
   1767 	CMD_RETURN_WAIT,
   1768 	CMD_RETURN_STOP
   1769 };
   1770 
   1771 /* Command parse result. */
   1772 enum cmd_parse_status {
   1773 	CMD_PARSE_ERROR,
   1774 	CMD_PARSE_SUCCESS
   1775 };
   1776 struct cmd_parse_result {
   1777 	enum cmd_parse_status	 status;
   1778 	struct cmd_list		*cmdlist;
   1779 	char			*error;
   1780 };
   1781 struct cmd_parse_input {
   1782 	int			 flags;
   1783 #define CMD_PARSE_QUIET 0x1
   1784 #define CMD_PARSE_PARSEONLY 0x2
   1785 #define CMD_PARSE_NOALIAS 0x4
   1786 #define CMD_PARSE_VERBOSE 0x8
   1787 #define CMD_PARSE_ONEGROUP 0x10
   1788 
   1789 	const char		*file;
   1790 	u_int			 line;
   1791 
   1792 	struct cmdq_item	*item;
   1793 	struct client		*c;
   1794 	struct cmd_find_state	 fs;
   1795 };
   1796 
   1797 /* Command queue flags. */
   1798 #define CMDQ_STATE_REPEAT 0x1
   1799 #define CMDQ_STATE_CONTROL 0x2
   1800 #define CMDQ_STATE_NOHOOKS 0x4
   1801 
   1802 /* Command queue callback. */
   1803 typedef enum cmd_retval (*cmdq_cb) (struct cmdq_item *, void *);
   1804 
   1805 /* Command definition flag. */
   1806 struct cmd_entry_flag {
   1807 	char			 flag;
   1808 	enum cmd_find_type	 type;
   1809 	int			 flags;
   1810 };
   1811 
   1812 /* Command definition. */
   1813 struct cmd_entry {
   1814 	const char		*name;
   1815 	const char		*alias;
   1816 
   1817 	struct args_parse	 args;
   1818 	const char		*usage;
   1819 
   1820 	struct cmd_entry_flag	 source;
   1821 	struct cmd_entry_flag	 target;
   1822 
   1823 #define CMD_STARTSERVER 0x1
   1824 #define CMD_READONLY 0x2
   1825 #define CMD_AFTERHOOK 0x4
   1826 #define CMD_CLIENT_CFLAG 0x8
   1827 #define CMD_CLIENT_TFLAG 0x10
   1828 #define CMD_CLIENT_CANFAIL 0x20
   1829 	int		 flags;
   1830 
   1831 	enum cmd_retval	 (*exec)(struct cmd *, struct cmdq_item *);
   1832 };
   1833 
   1834 /* Status line. */
   1835 #define STATUS_LINES_LIMIT 5
   1836 struct status_line_entry {
   1837 	char			*expanded;
   1838 	struct style_ranges	 ranges;
   1839 };
   1840 struct status_line {
   1841 	struct event		 timer;
   1842 
   1843 	struct screen		 screen;
   1844 	struct screen		*active;
   1845 	int			 references;
   1846 
   1847 	struct grid_cell	 style;
   1848 	struct status_line_entry entries[STATUS_LINES_LIMIT];
   1849 };
   1850 
   1851 /* Prompt type. */
   1852 #define PROMPT_NTYPES 4
   1853 enum prompt_type {
   1854 	PROMPT_TYPE_COMMAND,
   1855 	PROMPT_TYPE_SEARCH,
   1856 	PROMPT_TYPE_TARGET,
   1857 	PROMPT_TYPE_WINDOW_TARGET,
   1858 	PROMPT_TYPE_INVALID = 0xff
   1859 };
   1860 
   1861 /* File in client. */
   1862 typedef void (*client_file_cb) (struct client *, const char *, int, int,
   1863     struct evbuffer *, void *);
   1864 struct client_file {
   1865 	struct client			*c;
   1866 	struct tmuxpeer			*peer;
   1867 	struct client_files		*tree;
   1868 	int				 references;
   1869 	int				 stream;
   1870 
   1871 	char				*path;
   1872 	struct evbuffer			*buffer;
   1873 	struct bufferevent		*event;
   1874 
   1875 	int				 fd;
   1876 	int				 error;
   1877 	int				 closed;
   1878 
   1879 	client_file_cb			 cb;
   1880 	void				*data;
   1881 
   1882 	RB_ENTRY(client_file)		 entry;
   1883 };
   1884 RB_HEAD(client_files, client_file);
   1885 
   1886 /* Client window. */
   1887 struct client_window {
   1888 	u_int			 window;
   1889 	struct window_pane	*pane;
   1890 
   1891 	u_int			 sx;
   1892 	u_int			 sy;
   1893 
   1894 	RB_ENTRY(client_window)	 entry;
   1895 };
   1896 RB_HEAD(client_windows, client_window);
   1897 
   1898 /* Visible areas not obstructed by overlays. */
   1899 #define OVERLAY_MAX_RANGES 3
   1900 struct overlay_ranges {
   1901 	u_int	px[OVERLAY_MAX_RANGES];
   1902 	u_int	nx[OVERLAY_MAX_RANGES];
   1903 };
   1904 
   1905 /*
   1906  * Client theme, this is worked out from the background colour if not reported
   1907  * by terminal.
   1908  */
   1909 enum client_theme {
   1910 	THEME_UNKNOWN,
   1911 	THEME_LIGHT,
   1912 	THEME_DARK
   1913 };
   1914 
   1915 /* Client connection. */
   1916 typedef int (*prompt_input_cb)(struct client *, void *, const char *, int);
   1917 typedef void (*prompt_free_cb)(void *);
   1918 typedef void (*overlay_check_cb)(struct client*, void *, u_int, u_int, u_int,
   1919 	    struct overlay_ranges *);
   1920 typedef struct screen *(*overlay_mode_cb)(struct client *, void *, u_int *,
   1921 	    u_int *);
   1922 typedef void (*overlay_draw_cb)(struct client *, void *,
   1923 	    struct screen_redraw_ctx *);
   1924 typedef int (*overlay_key_cb)(struct client *, void *, struct key_event *);
   1925 typedef void (*overlay_free_cb)(struct client *, void *);
   1926 typedef void (*overlay_resize_cb)(struct client *, void *);
   1927 struct client {
   1928 	const char		*name;
   1929 	struct tmuxpeer		*peer;
   1930 	struct cmdq_list	*queue;
   1931 
   1932 	struct client_windows	 windows;
   1933 
   1934 	struct control_state	*control_state;
   1935 	u_int			 pause_age;
   1936 
   1937 	pid_t			 pid;
   1938 	int			 fd;
   1939 	int			 out_fd;
   1940 	struct event		 event;
   1941 	int			 retval;
   1942 
   1943 	struct timeval		 creation_time;
   1944 	struct timeval		 activity_time;
   1945 	struct timeval	 	 last_activity_time;
   1946 
   1947 	struct environ		*environ;
   1948 	struct format_job_tree	*jobs;
   1949 
   1950 	char			*title;
   1951 	char			*path;
   1952 	const char		*cwd;
   1953 
   1954 	char			*term_name;
   1955 	int			 term_features;
   1956 	char			*term_type;
   1957 	char		       **term_caps;
   1958 	u_int			 term_ncaps;
   1959 
   1960 	char			*ttyname;
   1961 	struct tty		 tty;
   1962 
   1963 	size_t			 written;
   1964 	size_t			 discarded;
   1965 	size_t			 redraw;
   1966 
   1967 	struct event		 repeat_timer;
   1968 
   1969 	struct event		 click_timer;
   1970 	u_int			 click_button;
   1971 	struct mouse_event	 click_event;
   1972 
   1973 	struct status_line	 status;
   1974 	enum client_theme	 theme;
   1975 
   1976 	struct input_requests	 input_requests;
   1977 
   1978 #define CLIENT_TERMINAL 0x1
   1979 #define CLIENT_LOGIN 0x2
   1980 #define CLIENT_EXIT 0x4
   1981 #define CLIENT_REDRAWWINDOW 0x8
   1982 #define CLIENT_REDRAWSTATUS 0x10
   1983 #define CLIENT_REPEAT 0x20
   1984 #define CLIENT_SUSPENDED 0x40
   1985 #define CLIENT_ATTACHED 0x80
   1986 #define CLIENT_EXITED 0x100
   1987 #define CLIENT_DEAD 0x200
   1988 #define CLIENT_REDRAWBORDERS 0x400
   1989 #define CLIENT_READONLY 0x800
   1990 #define CLIENT_NOSTARTSERVER 0x1000
   1991 #define CLIENT_CONTROL 0x2000
   1992 #define CLIENT_CONTROLCONTROL 0x4000
   1993 #define CLIENT_FOCUSED 0x8000
   1994 #define CLIENT_UTF8 0x10000
   1995 #define CLIENT_IGNORESIZE 0x20000
   1996 #define CLIENT_IDENTIFIED 0x40000
   1997 #define CLIENT_STATUSFORCE 0x80000
   1998 #define CLIENT_DOUBLECLICK 0x100000
   1999 #define CLIENT_TRIPLECLICK 0x200000
   2000 #define CLIENT_SIZECHANGED 0x400000
   2001 #define CLIENT_STATUSOFF 0x800000
   2002 #define CLIENT_REDRAWSTATUSALWAYS 0x1000000
   2003 #define CLIENT_REDRAWOVERLAY 0x2000000
   2004 #define CLIENT_CONTROL_NOOUTPUT 0x4000000
   2005 #define CLIENT_DEFAULTSOCKET 0x8000000
   2006 #define CLIENT_STARTSERVER 0x10000000
   2007 #define CLIENT_REDRAWPANES 0x20000000
   2008 #define CLIENT_NOFORK 0x40000000
   2009 #define CLIENT_ACTIVEPANE 0x80000000ULL
   2010 #define CLIENT_CONTROL_PAUSEAFTER 0x100000000ULL
   2011 #define CLIENT_CONTROL_WAITEXIT 0x200000000ULL
   2012 #define CLIENT_WINDOWSIZECHANGED 0x400000000ULL
   2013 #define CLIENT_CLIPBOARDBUFFER 0x800000000ULL
   2014 #define CLIENT_BRACKETPASTING 0x1000000000ULL
   2015 #define CLIENT_ASSUMEPASTING 0x2000000000ULL
   2016 #define CLIENT_REDRAWSCROLLBARS 0x4000000000ULL
   2017 #define CLIENT_NO_DETACH_ON_DESTROY 0x8000000000ULL
   2018 #define CLIENT_ALLREDRAWFLAGS		\
   2019 	(CLIENT_REDRAWWINDOW|		\
   2020 	 CLIENT_REDRAWSTATUS|		\
   2021 	 CLIENT_REDRAWSTATUSALWAYS|	\
   2022 	 CLIENT_REDRAWBORDERS|		\
   2023 	 CLIENT_REDRAWOVERLAY|		\
   2024 	 CLIENT_REDRAWPANES|		\
   2025 	 CLIENT_REDRAWSCROLLBARS)
   2026 #define CLIENT_UNATTACHEDFLAGS	\
   2027 	(CLIENT_DEAD|		\
   2028 	 CLIENT_SUSPENDED|	\
   2029 	 CLIENT_EXIT)
   2030 #define CLIENT_NODETACHFLAGS	\
   2031 	(CLIENT_DEAD|		\
   2032 	 CLIENT_EXIT)
   2033 #define CLIENT_NOSIZEFLAGS	\
   2034 	(CLIENT_DEAD|		\
   2035 	 CLIENT_SUSPENDED|	\
   2036 	 CLIENT_EXIT)
   2037 	uint64_t		 flags;
   2038 
   2039 	enum {
   2040 		CLIENT_EXIT_RETURN,
   2041 		CLIENT_EXIT_SHUTDOWN,
   2042 		CLIENT_EXIT_DETACH
   2043 	}			 exit_type;
   2044 	enum msgtype		 exit_msgtype;
   2045 	char			*exit_session;
   2046 	char			*exit_message;
   2047 
   2048 	struct key_table	*keytable;
   2049 	key_code		 last_key;
   2050 
   2051 	uint64_t		 redraw_panes;
   2052 	uint64_t		 redraw_scrollbars;
   2053 
   2054 	int			 message_ignore_keys;
   2055 	int			 message_ignore_styles;
   2056 	char			*message_string;
   2057 	struct event		 message_timer;
   2058 
   2059 	char			*prompt_string;
   2060 	struct format_tree	*prompt_formats;
   2061 	struct utf8_data	*prompt_buffer;
   2062 	char			*prompt_last;
   2063 	size_t			 prompt_index;
   2064 	prompt_input_cb		 prompt_inputcb;
   2065 	prompt_free_cb		 prompt_freecb;
   2066 	void			*prompt_data;
   2067 	u_int			 prompt_hindex[PROMPT_NTYPES];
   2068 	enum {
   2069 		PROMPT_ENTRY,
   2070 		PROMPT_COMMAND
   2071 	}			 prompt_mode;
   2072 	struct utf8_data	*prompt_saved;
   2073 #define PROMPT_SINGLE 0x1
   2074 #define PROMPT_NUMERIC 0x2
   2075 #define PROMPT_INCREMENTAL 0x4
   2076 #define PROMPT_NOFORMAT 0x8
   2077 #define PROMPT_KEY 0x10
   2078 #define PROMPT_ACCEPT 0x20
   2079 #define PROMPT_QUOTENEXT 0x40
   2080 	int			 prompt_flags;
   2081 	enum prompt_type	 prompt_type;
   2082 	int			 prompt_cursor;
   2083 
   2084 	struct session		*session;
   2085 	struct session		*last_session;
   2086 
   2087 	int			 references;
   2088 
   2089 	void			*pan_window;
   2090 	u_int			 pan_ox;
   2091 	u_int			 pan_oy;
   2092 
   2093 	overlay_check_cb	 overlay_check;
   2094 	overlay_mode_cb		 overlay_mode;
   2095 	overlay_draw_cb		 overlay_draw;
   2096 	overlay_key_cb		 overlay_key;
   2097 	overlay_free_cb		 overlay_free;
   2098 	overlay_resize_cb	 overlay_resize;
   2099 	void			*overlay_data;
   2100 	struct event		 overlay_timer;
   2101 
   2102 	struct client_files	 files;
   2103 	u_int			 source_file_depth;
   2104 
   2105 	u_int			*clipboard_panes;
   2106 	u_int			 clipboard_npanes;
   2107 
   2108 	TAILQ_ENTRY(client)	 entry;
   2109 };
   2110 TAILQ_HEAD(clients, client);
   2111 
   2112 /* Control mode subscription type. */
   2113 enum control_sub_type {
   2114 	CONTROL_SUB_SESSION,
   2115 	CONTROL_SUB_PANE,
   2116 	CONTROL_SUB_ALL_PANES,
   2117 	CONTROL_SUB_WINDOW,
   2118 	CONTROL_SUB_ALL_WINDOWS
   2119 };
   2120 
   2121 /* Key binding and key table. */
   2122 struct key_binding {
   2123 	key_code		 key;
   2124 	struct cmd_list		*cmdlist;
   2125 	const char		*note;
   2126 
   2127 	int			 flags;
   2128 #define KEY_BINDING_REPEAT 0x1
   2129 
   2130 	RB_ENTRY(key_binding)	 entry;
   2131 };
   2132 RB_HEAD(key_bindings, key_binding);
   2133 
   2134 struct key_table {
   2135 	const char		*name;
   2136 	struct timeval		 activity_time;
   2137 	struct key_bindings	 key_bindings;
   2138 	struct key_bindings	 default_key_bindings;
   2139 
   2140 	u_int			 references;
   2141 
   2142 	RB_ENTRY(key_table)	 entry;
   2143 };
   2144 RB_HEAD(key_tables, key_table);
   2145 
   2146 /* Option data. */
   2147 RB_HEAD(options_array, options_array_item);
   2148 union options_value {
   2149 	char			*string;
   2150 	long long		 number;
   2151 	struct style		 style;
   2152 	struct options_array	 array;
   2153 	struct cmd_list		*cmdlist;
   2154 };
   2155 
   2156 /* Option table entries. */
   2157 enum options_table_type {
   2158 	OPTIONS_TABLE_STRING,
   2159 	OPTIONS_TABLE_NUMBER,
   2160 	OPTIONS_TABLE_KEY,
   2161 	OPTIONS_TABLE_COLOUR,
   2162 	OPTIONS_TABLE_FLAG,
   2163 	OPTIONS_TABLE_CHOICE,
   2164 	OPTIONS_TABLE_COMMAND
   2165 };
   2166 
   2167 #define OPTIONS_TABLE_NONE 0
   2168 #define OPTIONS_TABLE_SERVER 0x1
   2169 #define OPTIONS_TABLE_SESSION 0x2
   2170 #define OPTIONS_TABLE_WINDOW 0x4
   2171 #define OPTIONS_TABLE_PANE 0x8
   2172 
   2173 #define OPTIONS_TABLE_IS_ARRAY 0x1
   2174 #define OPTIONS_TABLE_IS_HOOK 0x2
   2175 #define OPTIONS_TABLE_IS_STYLE 0x4
   2176 
   2177 struct options_table_entry {
   2178 	const char		 *name;
   2179 	const char		 *alternative_name;
   2180 	enum options_table_type	  type;
   2181 	int			  scope;
   2182 	int			  flags;
   2183 
   2184 	u_int			  minimum;
   2185 	u_int			  maximum;
   2186 	const char		**choices;
   2187 
   2188 	const char		 *default_str;
   2189 	long long		  default_num;
   2190 	const char		**default_arr;
   2191 
   2192 	const char		 *separator;
   2193 	const char		 *pattern;
   2194 
   2195 	const char		 *text;
   2196 	const char		 *unit;
   2197 };
   2198 
   2199 struct options_name_map {
   2200 	const char		*from;
   2201 	const char		*to;
   2202 };
   2203 
   2204 /* Common command usages. */
   2205 #define CMD_TARGET_PANE_USAGE "[-t target-pane]"
   2206 #define CMD_TARGET_WINDOW_USAGE "[-t target-window]"
   2207 #define CMD_TARGET_SESSION_USAGE "[-t target-session]"
   2208 #define CMD_TARGET_CLIENT_USAGE "[-t target-client]"
   2209 #define CMD_SRCDST_PANE_USAGE "[-s src-pane] [-t dst-pane]"
   2210 #define CMD_SRCDST_WINDOW_USAGE "[-s src-window] [-t dst-window]"
   2211 #define CMD_SRCDST_SESSION_USAGE "[-s src-session] [-t dst-session]"
   2212 #define CMD_SRCDST_CLIENT_USAGE "[-s src-client] [-t dst-client]"
   2213 #define CMD_BUFFER_USAGE "[-b buffer-name]"
   2214 
   2215 /* Spawn common context. */
   2216 struct spawn_context {
   2217 	struct cmdq_item	 *item;
   2218 
   2219 	struct session		 *s;
   2220 	struct winlink		 *wl;
   2221 	struct client		 *tc;
   2222 
   2223 	struct window_pane	 *wp0;
   2224 	struct layout_cell	 *lc;
   2225 
   2226 	const char		 *name;
   2227 	char			**argv;
   2228 	int			  argc;
   2229 	struct environ		 *environ;
   2230 
   2231 	int			  idx;
   2232 	const char		 *cwd;
   2233 
   2234 	int			  flags;
   2235 #define SPAWN_KILL 0x1
   2236 #define SPAWN_DETACHED 0x2
   2237 #define SPAWN_RESPAWN 0x4
   2238 #define SPAWN_BEFORE 0x8
   2239 #define SPAWN_NONOTIFY 0x10
   2240 #define SPAWN_FULLSIZE 0x20
   2241 #define SPAWN_EMPTY 0x40
   2242 #define SPAWN_ZOOM 0x80
   2243 };
   2244 
   2245 /* Mode tree sort order. */
   2246 struct mode_tree_sort_criteria {
   2247 	u_int	field;
   2248 	int	reversed;
   2249 };
   2250 
   2251 /* tmux.c */
   2252 extern struct options	*global_options;
   2253 extern struct options	*global_s_options;
   2254 extern struct options	*global_w_options;
   2255 extern struct environ	*global_environ;
   2256 extern struct timeval	 start_time;
   2257 extern const char	*socket_path;
   2258 extern const char	*shell_command;
   2259 extern int		 ptm_fd;
   2260 extern const char	*shell_command;
   2261 int		 checkshell(const char *);
   2262 void		 setblocking(int, int);
   2263 char 		*shell_argv0(const char *, int);
   2264 uint64_t	 get_timer(void);
   2265 const char	*sig2name(int);
   2266 const char	*find_cwd(void);
   2267 const char	*find_home(void);
   2268 const char	*getversion(void);
   2269 
   2270 /* proc.c */
   2271 struct imsg;
   2272 int	proc_send(struct tmuxpeer *, enum msgtype, int, const void *, size_t);
   2273 struct tmuxproc *proc_start(const char *);
   2274 void	proc_loop(struct tmuxproc *, int (*)(void));
   2275 void	proc_exit(struct tmuxproc *);
   2276 void	proc_set_signals(struct tmuxproc *, void(*)(int));
   2277 void	proc_clear_signals(struct tmuxproc *, int);
   2278 struct tmuxpeer *proc_add_peer(struct tmuxproc *, int,
   2279 	    void (*)(struct imsg *, void *), void *);
   2280 void	proc_remove_peer(struct tmuxpeer *);
   2281 void	proc_kill_peer(struct tmuxpeer *);
   2282 void	proc_flush_peer(struct tmuxpeer *);
   2283 void	proc_toggle_log(struct tmuxproc *);
   2284 pid_t	proc_fork_and_daemon(int *);
   2285 uid_t	proc_get_peer_uid(struct tmuxpeer *);
   2286 
   2287 /* cfg.c */
   2288 extern int cfg_finished;
   2289 extern struct client *cfg_client;
   2290 extern char **cfg_files;
   2291 extern u_int cfg_nfiles;
   2292 extern int cfg_quiet;
   2293 void	start_cfg(void);
   2294 int	load_cfg(const char *, struct client *, struct cmdq_item *,
   2295             struct cmd_find_state *, int, struct cmdq_item **);
   2296 int	load_cfg_from_buffer(const void *, size_t, const char *,
   2297   	    struct client *, struct cmdq_item *, struct cmd_find_state *,
   2298 	    int, struct cmdq_item **);
   2299 void printflike(1, 2) cfg_add_cause(const char *, ...);
   2300 void	cfg_print_causes(struct cmdq_item *);
   2301 void	cfg_show_causes(struct session *);
   2302 
   2303 /* paste.c */
   2304 struct paste_buffer;
   2305 const char	*paste_buffer_name(struct paste_buffer *);
   2306 u_int		 paste_buffer_order(struct paste_buffer *);
   2307 time_t		 paste_buffer_created(struct paste_buffer *);
   2308 const char	*paste_buffer_data(struct paste_buffer *, size_t *);
   2309 struct paste_buffer *paste_walk(struct paste_buffer *);
   2310 int		 paste_is_empty(void);
   2311 struct paste_buffer *paste_get_top(const char **);
   2312 struct paste_buffer *paste_get_name(const char *);
   2313 void		 paste_free(struct paste_buffer *);
   2314 void		 paste_add(const char *, char *, size_t);
   2315 int		 paste_rename(const char *, const char *, char **);
   2316 int		 paste_set(char *, size_t, const char *, char **);
   2317 void		 paste_replace(struct paste_buffer *, char *, size_t);
   2318 char		*paste_make_sample(struct paste_buffer *);
   2319 
   2320 /* format.c */
   2321 #define FORMAT_STATUS 0x1
   2322 #define FORMAT_FORCE 0x2
   2323 #define FORMAT_NOJOBS 0x4
   2324 #define FORMAT_VERBOSE 0x8
   2325 #define FORMAT_LAST 0x10
   2326 #define FORMAT_NONE 0
   2327 #define FORMAT_PANE 0x80000000U
   2328 #define FORMAT_WINDOW 0x40000000U
   2329 struct format_tree;
   2330 struct format_modifier;
   2331 typedef void *(*format_cb)(struct format_tree *);
   2332 void		 format_tidy_jobs(void);
   2333 const char	*format_skip(const char *, const char *);
   2334 int		 format_true(const char *);
   2335 struct format_tree *format_create(struct client *, struct cmdq_item *, int,
   2336 		     int);
   2337 void		 format_free(struct format_tree *);
   2338 void		 format_merge(struct format_tree *, struct format_tree *);
   2339 struct window_pane *format_get_pane(struct format_tree *);
   2340 void printflike(3, 4) format_add(struct format_tree *, const char *,
   2341 		     const char *, ...);
   2342 void		 format_add_tv(struct format_tree *, const char *,
   2343 		     struct timeval *);
   2344 void		 format_add_cb(struct format_tree *, const char *, format_cb);
   2345 void		 format_log_debug(struct format_tree *, const char *);
   2346 void		 format_each(struct format_tree *, void (*)(const char *,
   2347 		     const char *, void *), void *);
   2348 char		*format_pretty_time(time_t, int);
   2349 char		*format_expand_time(struct format_tree *, const char *);
   2350 char		*format_expand(struct format_tree *, const char *);
   2351 char		*format_single(struct cmdq_item *, const char *,
   2352 		     struct client *, struct session *, struct winlink *,
   2353 		     struct window_pane *);
   2354 char		*format_single_from_state(struct cmdq_item *, const char *,
   2355 		    struct client *, struct cmd_find_state *);
   2356 char		*format_single_from_target(struct cmdq_item *, const char *);
   2357 struct format_tree *format_create_defaults(struct cmdq_item *, struct client *,
   2358 		     struct session *, struct winlink *, struct window_pane *);
   2359 struct format_tree *format_create_from_state(struct cmdq_item *,
   2360 		     struct client *, struct cmd_find_state *);
   2361 struct format_tree *format_create_from_target(struct cmdq_item *);
   2362 void		 format_defaults(struct format_tree *, struct client *,
   2363 		     struct session *, struct winlink *, struct window_pane *);
   2364 void		 format_defaults_window(struct format_tree *, struct window *);
   2365 void		 format_defaults_pane(struct format_tree *,
   2366 		     struct window_pane *);
   2367 void		 format_defaults_paste_buffer(struct format_tree *,
   2368 		     struct paste_buffer *);
   2369 void		 format_lost_client(struct client *);
   2370 char		*format_grid_word(struct grid *, u_int, u_int);
   2371 char		*format_grid_hyperlink(struct grid *, u_int, u_int,
   2372 		     struct screen *);
   2373 char		*format_grid_line(struct grid *, u_int);
   2374 
   2375 /* format-draw.c */
   2376 void		 format_draw(struct screen_write_ctx *,
   2377 		     const struct grid_cell *, u_int, const char *,
   2378 		     struct style_ranges *, int);
   2379 u_int		 format_width(const char *);
   2380 char		*format_trim_left(const char *, u_int);
   2381 char		*format_trim_right(const char *, u_int);
   2382 
   2383 /* notify.c */
   2384 void	notify_hook(struct cmdq_item *, const char *);
   2385 void	notify_client(const char *, struct client *);
   2386 void	notify_session(const char *, struct session *);
   2387 void	notify_winlink(const char *, struct winlink *);
   2388 void	notify_session_window(const char *, struct session *, struct window *);
   2389 void	notify_window(const char *, struct window *);
   2390 void	notify_pane(const char *, struct window_pane *);
   2391 void	notify_paste_buffer(const char *, int);
   2392 
   2393 /* options.c */
   2394 struct options	*options_create(struct options *);
   2395 void		 options_free(struct options *);
   2396 struct options	*options_get_parent(struct options *);
   2397 void		 options_set_parent(struct options *, struct options *);
   2398 struct options_entry *options_first(struct options *);
   2399 struct options_entry *options_next(struct options_entry *);
   2400 struct options_entry *options_empty(struct options *,
   2401 		     const struct options_table_entry *);
   2402 struct options_entry *options_default(struct options *,
   2403 		     const struct options_table_entry *);
   2404 char		*options_default_to_string(const struct options_table_entry *);
   2405 const char	*options_name(struct options_entry *);
   2406 struct options	*options_owner(struct options_entry *);
   2407 const struct options_table_entry *options_table_entry(struct options_entry *);
   2408 struct options_entry *options_get_only(struct options *, const char *);
   2409 struct options_entry *options_get(struct options *, const char *);
   2410 void		 options_array_clear(struct options_entry *);
   2411 union options_value *options_array_get(struct options_entry *, u_int);
   2412 int		 options_array_set(struct options_entry *, u_int, const char *,
   2413 		     int, char **);
   2414 int		 options_array_assign(struct options_entry *, const char *,
   2415 		     char **);
   2416 struct options_array_item *options_array_first(struct options_entry *);
   2417 struct options_array_item *options_array_next(struct options_array_item *);
   2418 u_int		 options_array_item_index(struct options_array_item *);
   2419 union options_value *options_array_item_value(struct options_array_item *);
   2420 int		 options_is_array(struct options_entry *);
   2421 int		 options_is_string(struct options_entry *);
   2422 char		*options_to_string(struct options_entry *, int, int);
   2423 char		*options_parse(const char *, int *);
   2424 struct options_entry *options_parse_get(struct options *, const char *, int *,
   2425 		     int);
   2426 char		*options_match(const char *, int *, int *);
   2427 struct options_entry *options_match_get(struct options *, const char *, int *,
   2428 		     int, int *);
   2429 const char	*options_get_string(struct options *, const char *);
   2430 long long	 options_get_number(struct options *, const char *);
   2431 const struct cmd_list *options_get_command(struct options *, const char *);
   2432 struct options_entry * printflike(4, 5) options_set_string(struct options *,
   2433 		     const char *, int, const char *, ...);
   2434 struct options_entry *options_set_number(struct options *, const char *,
   2435 		     long long);
   2436 struct options_entry *options_set_command(struct options *, const char *,
   2437 		     struct cmd_list *);
   2438 int		 options_scope_from_name(struct args *, int,
   2439 		     const char *, struct cmd_find_state *, struct options **,
   2440 		     char **);
   2441 int		 options_scope_from_flags(struct args *, int,
   2442 		     struct cmd_find_state *, struct options **, char **);
   2443 struct style	*options_string_to_style(struct options *, const char *,
   2444 		     struct format_tree *);
   2445 int		 options_from_string(struct options *,
   2446 		     const struct options_table_entry *, const char *,
   2447 		     const char *, int, char **);
   2448 int	 	 options_find_choice(const struct options_table_entry *,
   2449 		     const char *, char **);
   2450 void		 options_push_changes(const char *);
   2451 int		 options_remove_or_default(struct options_entry *, int,
   2452 		     char **);
   2453 
   2454 /* options-table.c */
   2455 extern const struct options_table_entry	options_table[];
   2456 extern const struct options_name_map	options_other_names[];
   2457 
   2458 /* job.c */
   2459 typedef void (*job_update_cb) (struct job *);
   2460 typedef void (*job_complete_cb) (struct job *);
   2461 typedef void (*job_free_cb) (void *);
   2462 #define JOB_NOWAIT 0x1
   2463 #define JOB_KEEPWRITE 0x2
   2464 #define JOB_PTY 0x4
   2465 #define JOB_DEFAULTSHELL 0x8
   2466 #define JOB_SHOWSTDERR 0x10
   2467 struct job	*job_run(const char *, int, char **, struct environ *,
   2468 		     struct session *, const char *, job_update_cb,
   2469 		     job_complete_cb, job_free_cb, void *, int, int, int);
   2470 void		 job_free(struct job *);
   2471 int		 job_transfer(struct job *, pid_t *, char *, size_t);
   2472 void		 job_resize(struct job *, u_int, u_int);
   2473 void		 job_check_died(pid_t, int);
   2474 int		 job_get_status(struct job *);
   2475 void		*job_get_data(struct job *);
   2476 struct bufferevent *job_get_event(struct job *);
   2477 void		 job_kill_all(void);
   2478 int		 job_still_running(void);
   2479 void		 job_print_summary(struct cmdq_item *, int);
   2480 
   2481 /* environ.c */
   2482 struct environ *environ_create(void);
   2483 void	environ_free(struct environ *);
   2484 struct environ_entry *environ_first(struct environ *);
   2485 struct environ_entry *environ_next(struct environ_entry *);
   2486 void	environ_copy(struct environ *, struct environ *);
   2487 struct environ_entry *environ_find(struct environ *, const char *);
   2488 void printflike(4, 5) environ_set(struct environ *, const char *, int,
   2489 	    const char *, ...);
   2490 void	environ_clear(struct environ *, const char *);
   2491 void	environ_put(struct environ *, const char *, int);
   2492 void	environ_unset(struct environ *, const char *);
   2493 void	environ_update(struct options *, struct environ *, struct environ *);
   2494 void	environ_push(struct environ *);
   2495 void printflike(2, 3) environ_log(struct environ *, const char *, ...);
   2496 struct environ *environ_for_session(struct session *, int);
   2497 
   2498 /* tty.c */
   2499 void	tty_create_log(void);
   2500 int	tty_window_bigger(struct tty *);
   2501 int	tty_window_offset(struct tty *, u_int *, u_int *, u_int *, u_int *);
   2502 void	tty_update_window_offset(struct window *);
   2503 void	tty_update_client_offset(struct client *);
   2504 void	tty_raw(struct tty *, const char *);
   2505 void	tty_attributes(struct tty *, const struct grid_cell *,
   2506 	    const struct grid_cell *, struct colour_palette *,
   2507 	    struct hyperlinks *);
   2508 void	tty_reset(struct tty *);
   2509 void	tty_region_off(struct tty *);
   2510 void	tty_margin_off(struct tty *);
   2511 void	tty_cursor(struct tty *, u_int, u_int);
   2512 void	tty_clipboard_query(struct tty *);
   2513 void	tty_putcode(struct tty *, enum tty_code_code);
   2514 void	tty_putcode_i(struct tty *, enum tty_code_code, int);
   2515 void	tty_putcode_ii(struct tty *, enum tty_code_code, int, int);
   2516 void	tty_putcode_iii(struct tty *, enum tty_code_code, int, int, int);
   2517 void	tty_putcode_s(struct tty *, enum tty_code_code, const char *);
   2518 void	tty_putcode_ss(struct tty *, enum tty_code_code, const char *,
   2519 	    const char *);
   2520 void	tty_puts(struct tty *, const char *);
   2521 void	tty_putc(struct tty *, u_char);
   2522 void	tty_putn(struct tty *, const void *, size_t, u_int);
   2523 void	tty_cell(struct tty *, const struct grid_cell *,
   2524 	    const struct grid_cell *, struct colour_palette *,
   2525 	    struct hyperlinks *);
   2526 int	tty_init(struct tty *, struct client *);
   2527 void	tty_resize(struct tty *);
   2528 void	tty_set_size(struct tty *, u_int, u_int, u_int, u_int);
   2529 void	tty_invalidate(struct tty *);
   2530 void	tty_start_tty(struct tty *);
   2531 void	tty_send_requests(struct tty *);
   2532 void	tty_repeat_requests(struct tty *, int);
   2533 void	tty_stop_tty(struct tty *);
   2534 void	tty_set_title(struct tty *, const char *);
   2535 void	tty_set_path(struct tty *, const char *);
   2536 void	tty_update_mode(struct tty *, int, struct screen *);
   2537 void	tty_draw_line(struct tty *, struct screen *, u_int, u_int, u_int,
   2538 	    u_int, u_int, const struct grid_cell *, struct colour_palette *);
   2539 
   2540 #ifdef ENABLE_SIXEL
   2541 void	tty_draw_images(struct client *, struct window_pane *, struct screen *);
   2542 #endif
   2543 
   2544 void	tty_sync_start(struct tty *);
   2545 void	tty_sync_end(struct tty *);
   2546 int	tty_open(struct tty *, char **);
   2547 void	tty_close(struct tty *);
   2548 void	tty_free(struct tty *);
   2549 void	tty_update_features(struct tty *);
   2550 void	tty_set_selection(struct tty *, const char *, const char *, size_t);
   2551 void	tty_write(void (*)(struct tty *, const struct tty_ctx *),
   2552 	    struct tty_ctx *);
   2553 void	tty_cmd_alignmenttest(struct tty *, const struct tty_ctx *);
   2554 void	tty_cmd_cell(struct tty *, const struct tty_ctx *);
   2555 void	tty_cmd_cells(struct tty *, const struct tty_ctx *);
   2556 void	tty_cmd_clearendofline(struct tty *, const struct tty_ctx *);
   2557 void	tty_cmd_clearendofscreen(struct tty *, const struct tty_ctx *);
   2558 void	tty_cmd_clearline(struct tty *, const struct tty_ctx *);
   2559 void	tty_cmd_clearscreen(struct tty *, const struct tty_ctx *);
   2560 void	tty_cmd_clearstartofline(struct tty *, const struct tty_ctx *);
   2561 void	tty_cmd_clearstartofscreen(struct tty *, const struct tty_ctx *);
   2562 void	tty_cmd_deletecharacter(struct tty *, const struct tty_ctx *);
   2563 void	tty_cmd_clearcharacter(struct tty *, const struct tty_ctx *);
   2564 void	tty_cmd_deleteline(struct tty *, const struct tty_ctx *);
   2565 void	tty_cmd_insertcharacter(struct tty *, const struct tty_ctx *);
   2566 void	tty_cmd_insertline(struct tty *, const struct tty_ctx *);
   2567 void	tty_cmd_linefeed(struct tty *, const struct tty_ctx *);
   2568 void	tty_cmd_scrollup(struct tty *, const struct tty_ctx *);
   2569 void	tty_cmd_scrolldown(struct tty *, const struct tty_ctx *);
   2570 void	tty_cmd_reverseindex(struct tty *, const struct tty_ctx *);
   2571 void	tty_cmd_setselection(struct tty *, const struct tty_ctx *);
   2572 void	tty_cmd_rawstring(struct tty *, const struct tty_ctx *);
   2573 
   2574 #ifdef ENABLE_SIXEL
   2575 void	tty_cmd_sixelimage(struct tty *, const struct tty_ctx *);
   2576 #endif
   2577 
   2578 void	tty_cmd_syncstart(struct tty *, const struct tty_ctx *);
   2579 void	tty_default_colours(struct grid_cell *, struct window_pane *);
   2580 
   2581 /* tty-term.c */
   2582 extern struct tty_terms tty_terms;
   2583 u_int		 tty_term_ncodes(void);
   2584 void		 tty_term_apply(struct tty_term *, const char *, int);
   2585 void		 tty_term_apply_overrides(struct tty_term *);
   2586 struct tty_term *tty_term_create(struct tty *, char *, char **, u_int, int *,
   2587 		     char **);
   2588 void		 tty_term_free(struct tty_term *);
   2589 int		 tty_term_read_list(const char *, int, char ***, u_int *,
   2590 		     char **);
   2591 void		 tty_term_free_list(char **, u_int);
   2592 int		 tty_term_has(struct tty_term *, enum tty_code_code);
   2593 const char	*tty_term_string(struct tty_term *, enum tty_code_code);
   2594 const char	*tty_term_string_i(struct tty_term *, enum tty_code_code, int);
   2595 const char	*tty_term_string_ii(struct tty_term *, enum tty_code_code, int,
   2596 		     int);
   2597 const char	*tty_term_string_iii(struct tty_term *, enum tty_code_code, int,
   2598 		     int, int);
   2599 const char	*tty_term_string_s(struct tty_term *, enum tty_code_code,
   2600 		     const char *);
   2601 const char	*tty_term_string_ss(struct tty_term *, enum tty_code_code,
   2602 		     const char *, const char *);
   2603 int		 tty_term_number(struct tty_term *, enum tty_code_code);
   2604 int		 tty_term_flag(struct tty_term *, enum tty_code_code);
   2605 const char	*tty_term_describe(struct tty_term *, enum tty_code_code);
   2606 
   2607 /* tty-features.c */
   2608 void		 tty_add_features(int *, const char *, const char *);
   2609 const char	*tty_get_features(int);
   2610 int		 tty_apply_features(struct tty_term *, int);
   2611 void		 tty_default_features(int *, const char *, u_int);
   2612 
   2613 /* tty-acs.c */
   2614 int		 tty_acs_needed(struct tty *);
   2615 const char	*tty_acs_get(struct tty *, u_char);
   2616 int		 tty_acs_reverse_get(struct tty *, const char *, size_t);
   2617 const struct utf8_data *tty_acs_double_borders(int);
   2618 const struct utf8_data *tty_acs_heavy_borders(int);
   2619 const struct utf8_data *tty_acs_rounded_borders(int);
   2620 
   2621 /* tty-keys.c */
   2622 void		tty_keys_build(struct tty *);
   2623 void		tty_keys_free(struct tty *);
   2624 int		tty_keys_next(struct tty *);
   2625 int		tty_keys_colours(struct tty *, const char *, size_t, size_t *,
   2626 		     int *, int *);
   2627 
   2628 /* arguments.c */
   2629 void		 args_set(struct args *, u_char, struct args_value *, int);
   2630 struct args 	*args_create(void);
   2631 struct args	*args_parse(const struct args_parse *, struct args_value *,
   2632 		     u_int, char **);
   2633 struct args	*args_copy(struct args *, int, char **);
   2634 void		 args_to_vector(struct args *, int *, char ***);
   2635 struct args_value *args_from_vector(int, char **);
   2636 void		 args_free_value(struct args_value *);
   2637 void		 args_free_values(struct args_value *, u_int);
   2638 void		 args_free(struct args *);
   2639 char		*args_print(struct args *);
   2640 char		*args_escape(const char *);
   2641 int		 args_has(struct args *, u_char);
   2642 const char	*args_get(struct args *, u_char);
   2643 u_char		 args_first(struct args *, struct args_entry **);
   2644 u_char		 args_next(struct args_entry **);
   2645 u_int		 args_count(struct args *);
   2646 struct args_value *args_values(struct args *);
   2647 struct args_value *args_value(struct args *, u_int);
   2648 const char	*args_string(struct args *, u_int);
   2649 struct cmd_list	*args_make_commands_now(struct cmd *, struct cmdq_item *,
   2650 		     u_int, int);
   2651 struct args_command_state *args_make_commands_prepare(struct cmd *,
   2652 		     struct cmdq_item *, u_int, const char *, int, int);
   2653 struct cmd_list *args_make_commands(struct args_command_state *, int, char **,
   2654 		     char **);
   2655 void		 args_make_commands_free(struct args_command_state *);
   2656 char		*args_make_commands_get_command(struct args_command_state *);
   2657 struct args_value *args_first_value(struct args *, u_char);
   2658 struct args_value *args_next_value(struct args_value *);
   2659 long long	 args_strtonum(struct args *, u_char, long long, long long,
   2660 		     char **);
   2661 long long	 args_strtonum_and_expand(struct args *, u_char, long long,
   2662 		     long long, struct cmdq_item *, char **);
   2663 long long	 args_percentage(struct args *, u_char, long long,
   2664 		     long long, long long, char **);
   2665 long long	 args_string_percentage(const char *, long long, long long,
   2666 		     long long, char **);
   2667 long long	 args_percentage_and_expand(struct args *, u_char, long long,
   2668 		     long long, long long, struct cmdq_item *, char **);
   2669 long long	 args_string_percentage_and_expand(const char *, long long,
   2670 		     long long, long long, struct cmdq_item *, char **);
   2671 
   2672 /* cmd-find.c */
   2673 int		 cmd_find_target(struct cmd_find_state *, struct cmdq_item *,
   2674 		     const char *, enum cmd_find_type, int);
   2675 struct client	*cmd_find_best_client(struct session *);
   2676 struct client	*cmd_find_client(struct cmdq_item *, const char *, int);
   2677 void		 cmd_find_clear_state(struct cmd_find_state *, int);
   2678 int		 cmd_find_empty_state(struct cmd_find_state *);
   2679 int		 cmd_find_valid_state(struct cmd_find_state *);
   2680 void		 cmd_find_copy_state(struct cmd_find_state *,
   2681 		     struct cmd_find_state *);
   2682 void		 cmd_find_from_session(struct cmd_find_state *,
   2683 		     struct session *, int);
   2684 void		 cmd_find_from_winlink(struct cmd_find_state *,
   2685 		     struct winlink *, int);
   2686 int		 cmd_find_from_session_window(struct cmd_find_state *,
   2687 		     struct session *, struct window *, int);
   2688 int		 cmd_find_from_window(struct cmd_find_state *, struct window *,
   2689 		     int);
   2690 void		 cmd_find_from_winlink_pane(struct cmd_find_state *,
   2691 		     struct winlink *, struct window_pane *, int);
   2692 int		 cmd_find_from_pane(struct cmd_find_state *,
   2693 		     struct window_pane *, int);
   2694 int		 cmd_find_from_client(struct cmd_find_state *, struct client *,
   2695 		     int);
   2696 int		 cmd_find_from_mouse(struct cmd_find_state *,
   2697 		     struct mouse_event *, int);
   2698 int		 cmd_find_from_nothing(struct cmd_find_state *, int);
   2699 
   2700 /* cmd.c */
   2701 extern const struct cmd_entry *cmd_table[];
   2702 const struct cmd_entry *cmd_find(const char *, char **);
   2703 void printflike(3, 4) cmd_log_argv(int, char **, const char *, ...);
   2704 void		 cmd_prepend_argv(int *, char ***, const char *);
   2705 void		 cmd_append_argv(int *, char ***, const char *);
   2706 int		 cmd_pack_argv(int, char **, char *, size_t);
   2707 int		 cmd_unpack_argv(char *, size_t, int, char ***);
   2708 char	       **cmd_copy_argv(int, char **);
   2709 void		 cmd_free_argv(int, char **);
   2710 char		*cmd_stringify_argv(int, char **);
   2711 char		*cmd_get_alias(const char *);
   2712 const struct cmd_entry *cmd_get_entry(struct cmd *);
   2713 struct args	*cmd_get_args(struct cmd *);
   2714 u_int		 cmd_get_group(struct cmd *);
   2715 void		 cmd_get_source(struct cmd *, const char **, u_int *);
   2716 int		 cmd_get_parse_flags(struct cmd *);
   2717 struct cmd	*cmd_parse(struct args_value *, u_int, const char *, u_int, int,
   2718 		     char **);
   2719 struct cmd	*cmd_copy(struct cmd *, int, char **);
   2720 void		 cmd_free(struct cmd *);
   2721 char		*cmd_print(struct cmd *);
   2722 struct cmd_list	*cmd_list_new(void);
   2723 struct cmd_list	*cmd_list_copy(const struct cmd_list *, int, char **);
   2724 void		 cmd_list_append(struct cmd_list *, struct cmd *);
   2725 void		 cmd_list_append_all(struct cmd_list *, struct cmd_list *);
   2726 void		 cmd_list_move(struct cmd_list *, struct cmd_list *);
   2727 void		 cmd_list_free(struct cmd_list *);
   2728 char		*cmd_list_print(const struct cmd_list *, int);
   2729 struct cmd	*cmd_list_first(struct cmd_list *);
   2730 struct cmd	*cmd_list_next(struct cmd *);
   2731 int		 cmd_list_all_have(struct cmd_list *, int);
   2732 int		 cmd_list_any_have(struct cmd_list *, int);
   2733 int		 cmd_mouse_at(struct window_pane *, struct mouse_event *,
   2734 		     u_int *, u_int *, int);
   2735 struct winlink	*cmd_mouse_window(struct mouse_event *, struct session **);
   2736 struct window_pane *cmd_mouse_pane(struct mouse_event *, struct session **,
   2737 		     struct winlink **);
   2738 char		*cmd_template_replace(const char *, const char *, int);
   2739 
   2740 /* cmd-attach-session.c */
   2741 enum cmd_retval	 cmd_attach_session(struct cmdq_item *, const char *, int, int,
   2742 		     int, const char *, int, const char *);
   2743 
   2744 /* cmd-parse.c */
   2745 struct cmd_parse_result *cmd_parse_from_file(FILE *, struct cmd_parse_input *);
   2746 struct cmd_parse_result *cmd_parse_from_string(const char *,
   2747 		     struct cmd_parse_input *);
   2748 enum cmd_parse_status cmd_parse_and_insert(const char *,
   2749 		     struct cmd_parse_input *, struct cmdq_item *,
   2750 		     struct cmdq_state *, char **);
   2751 enum cmd_parse_status cmd_parse_and_append(const char *,
   2752 		     struct cmd_parse_input *, struct client *,
   2753 		     struct cmdq_state *, char **);
   2754 struct cmd_parse_result *cmd_parse_from_buffer(const void *, size_t,
   2755 		     struct cmd_parse_input *);
   2756 struct cmd_parse_result *cmd_parse_from_arguments(struct args_value *, u_int,
   2757 		     struct cmd_parse_input *);
   2758 
   2759 /* cmd-queue.c */
   2760 struct cmdq_state *cmdq_new_state(struct cmd_find_state *, struct key_event *,
   2761 		     int);
   2762 struct cmdq_state *cmdq_link_state(struct cmdq_state *);
   2763 struct cmdq_state *cmdq_copy_state(struct cmdq_state *,
   2764 		     struct cmd_find_state *);
   2765 void		  cmdq_free_state(struct cmdq_state *);
   2766 void printflike(3, 4) cmdq_add_format(struct cmdq_state *, const char *,
   2767 		     const char *, ...);
   2768 void		  cmdq_add_formats(struct cmdq_state *, struct format_tree *);
   2769 void		  cmdq_merge_formats(struct cmdq_item *, struct format_tree *);
   2770 struct cmdq_list *cmdq_new(void);
   2771 void cmdq_free(struct cmdq_list *);
   2772 const char	 *cmdq_get_name(struct cmdq_item *);
   2773 struct client	 *cmdq_get_client(struct cmdq_item *);
   2774 struct client	 *cmdq_get_target_client(struct cmdq_item *);
   2775 struct cmdq_state *cmdq_get_state(struct cmdq_item *);
   2776 struct cmd_find_state *cmdq_get_target(struct cmdq_item *);
   2777 struct cmd_find_state *cmdq_get_source(struct cmdq_item *);
   2778 struct key_event *cmdq_get_event(struct cmdq_item *);
   2779 struct cmd_find_state *cmdq_get_current(struct cmdq_item *);
   2780 int		  cmdq_get_flags(struct cmdq_item *);
   2781 struct cmdq_item *cmdq_get_command(struct cmd_list *, struct cmdq_state *);
   2782 #define cmdq_get_callback(cb, data) cmdq_get_callback1(#cb, cb, data)
   2783 struct cmdq_item *cmdq_get_callback1(const char *, cmdq_cb, void *);
   2784 struct cmdq_item *cmdq_get_error(const char *);
   2785 struct cmdq_item *cmdq_insert_after(struct cmdq_item *, struct cmdq_item *);
   2786 struct cmdq_item *cmdq_append(struct client *, struct cmdq_item *);
   2787 void printflike(4, 5) cmdq_insert_hook(struct session *, struct cmdq_item *,
   2788 		     struct cmd_find_state *, const char *, ...);
   2789 void		 cmdq_continue(struct cmdq_item *);
   2790 u_int		 cmdq_next(struct client *);
   2791 struct cmdq_item *cmdq_running(struct client *);
   2792 void		 cmdq_guard(struct cmdq_item *, const char *, int);
   2793 void printflike(2, 3) cmdq_print(struct cmdq_item *, const char *, ...);
   2794 void 		 cmdq_print_data(struct cmdq_item *, struct evbuffer *);
   2795 void printflike(2, 3) cmdq_error(struct cmdq_item *, const char *, ...);
   2796 
   2797 /* cmd-wait-for.c */
   2798 void	cmd_wait_for_flush(void);
   2799 
   2800 /* client.c */
   2801 int	client_main(struct event_base *, int, char **, uint64_t, int);
   2802 
   2803 /* key-bindings.c */
   2804 struct key_table *key_bindings_get_table(const char *, int);
   2805 struct key_table *key_bindings_first_table(void);
   2806 struct key_table *key_bindings_next_table(struct key_table *);
   2807 void	 key_bindings_unref_table(struct key_table *);
   2808 struct key_binding *key_bindings_get(struct key_table *, key_code);
   2809 struct key_binding *key_bindings_get_default(struct key_table *, key_code);
   2810 struct key_binding *key_bindings_first(struct key_table *);
   2811 struct key_binding *key_bindings_next(struct key_table *, struct key_binding *);
   2812 void	 key_bindings_add(const char *, key_code, const char *, int,
   2813 	     struct cmd_list *);
   2814 void	 key_bindings_remove(const char *, key_code);
   2815 void	 key_bindings_reset(const char *, key_code);
   2816 void	 key_bindings_remove_table(const char *);
   2817 void	 key_bindings_reset_table(const char *);
   2818 void	 key_bindings_init(void);
   2819 struct cmdq_item *key_bindings_dispatch(struct key_binding *,
   2820 	     struct cmdq_item *, struct client *, struct key_event *,
   2821 	     struct cmd_find_state *);
   2822 
   2823 /* key-string.c */
   2824 key_code	 key_string_lookup_string(const char *);
   2825 const char	*key_string_lookup_key(key_code, int);
   2826 
   2827 /* alerts.c */
   2828 void	alerts_reset_all(void);
   2829 void	alerts_queue(struct window *, int);
   2830 void	alerts_check_session(struct session *);
   2831 
   2832 /* file.c */
   2833 int	 file_cmp(struct client_file *, struct client_file *);
   2834 RB_PROTOTYPE(client_files, client_file, entry, file_cmp);
   2835 struct client_file *file_create_with_peer(struct tmuxpeer *,
   2836 	    struct client_files *, int, client_file_cb, void *);
   2837 struct client_file *file_create_with_client(struct client *, int,
   2838 	    client_file_cb, void *);
   2839 void	 file_free(struct client_file *);
   2840 void	 file_fire_done(struct client_file *);
   2841 void	 file_fire_read(struct client_file *);
   2842 int	 file_can_print(struct client *);
   2843 void printflike(2, 3) file_print(struct client *, const char *, ...);
   2844 void printflike(2, 0) file_vprint(struct client *, const char *, va_list);
   2845 void	 file_print_buffer(struct client *, void *, size_t);
   2846 void printflike(2, 3) file_error(struct client *, const char *, ...);
   2847 void	 file_write(struct client *, const char *, int, const void *, size_t,
   2848 	     client_file_cb, void *);
   2849 struct client_file *file_read(struct client *, const char *, client_file_cb,
   2850 	     void *);
   2851 void	 file_cancel(struct client_file *);
   2852 void	 file_push(struct client_file *);
   2853 int	 file_write_left(struct client_files *);
   2854 void	 file_write_open(struct client_files *, struct tmuxpeer *,
   2855 	     struct imsg *, int, int, client_file_cb, void *);
   2856 void	 file_write_data(struct client_files *, struct imsg *);
   2857 void	 file_write_close(struct client_files *, struct imsg *);
   2858 void	 file_read_open(struct client_files *, struct tmuxpeer *, struct imsg *,
   2859 	     int, int, client_file_cb, void *);
   2860 void	 file_write_ready(struct client_files *, struct imsg *);
   2861 void	 file_read_data(struct client_files *, struct imsg *);
   2862 void	 file_read_done(struct client_files *, struct imsg *);
   2863 void	 file_read_cancel(struct client_files *, struct imsg *);
   2864 
   2865 /* server.c */
   2866 extern struct tmuxproc *server_proc;
   2867 extern struct clients clients;
   2868 extern struct cmd_find_state marked_pane;
   2869 extern struct message_list message_log;
   2870 extern time_t current_time;
   2871 void	 server_set_marked(struct session *, struct winlink *,
   2872 	     struct window_pane *);
   2873 void	 server_clear_marked(void);
   2874 int	 server_is_marked(struct session *, struct winlink *,
   2875 	     struct window_pane *);
   2876 int	 server_check_marked(void);
   2877 int	 server_start(struct tmuxproc *, uint64_t, struct event_base *, int,
   2878 	     char *);
   2879 void	 server_update_socket(void);
   2880 void	 server_add_accept(int);
   2881 void printflike(1, 2) server_add_message(const char *, ...);
   2882 int	 server_create_socket(uint64_t, char **);
   2883 
   2884 /* server-client.c */
   2885 RB_PROTOTYPE(client_windows, client_window, entry, server_client_window_cmp);
   2886 u_int	 server_client_how_many(void);
   2887 void	 server_client_set_overlay(struct client *, u_int, overlay_check_cb,
   2888 	     overlay_mode_cb, overlay_draw_cb, overlay_key_cb,
   2889 	     overlay_free_cb, overlay_resize_cb, void *);
   2890 void	 server_client_clear_overlay(struct client *);
   2891 void	 server_client_overlay_range(u_int, u_int, u_int, u_int, u_int, u_int,
   2892 	     u_int, struct overlay_ranges *);
   2893 void	 server_client_set_key_table(struct client *, const char *);
   2894 const char *server_client_get_key_table(struct client *);
   2895 int	 server_client_check_nested(struct client *);
   2896 int	 server_client_handle_key(struct client *, struct key_event *);
   2897 struct client *server_client_create(int);
   2898 int	 server_client_open(struct client *, char **);
   2899 void	 server_client_unref(struct client *);
   2900 void	 server_client_set_session(struct client *, struct session *);
   2901 void	 server_client_lost(struct client *);
   2902 void	 server_client_suspend(struct client *);
   2903 void	 server_client_detach(struct client *, enum msgtype);
   2904 void	 server_client_exec(struct client *, const char *);
   2905 void	 server_client_loop(void);
   2906 const char *server_client_get_cwd(struct client *, struct session *);
   2907 void	 server_client_set_flags(struct client *, const char *);
   2908 const char *server_client_get_flags(struct client *);
   2909 struct client_window *server_client_get_client_window(struct client *, u_int);
   2910 struct client_window *server_client_add_client_window(struct client *, u_int);
   2911 struct window_pane *server_client_get_pane(struct client *);
   2912 void	 server_client_set_pane(struct client *, struct window_pane *);
   2913 void	 server_client_remove_pane(struct window_pane *);
   2914 void	 server_client_print(struct client *, int, struct evbuffer *);
   2915 
   2916 /* server-fn.c */
   2917 void	 server_redraw_client(struct client *);
   2918 void	 server_status_client(struct client *);
   2919 void	 server_redraw_session(struct session *);
   2920 void	 server_redraw_session_group(struct session *);
   2921 void	 server_status_session(struct session *);
   2922 void	 server_status_session_group(struct session *);
   2923 void	 server_redraw_window(struct window *);
   2924 void	 server_redraw_window_borders(struct window *);
   2925 void	 server_status_window(struct window *);
   2926 void	 server_lock(void);
   2927 void	 server_lock_session(struct session *);
   2928 void	 server_lock_client(struct client *);
   2929 void	 server_kill_pane(struct window_pane *);
   2930 void	 server_kill_window(struct window *, int);
   2931 void	 server_renumber_session(struct session *);
   2932 void	 server_renumber_all(void);
   2933 int	 server_link_window(struct session *,
   2934 	     struct winlink *, struct session *, int, int, int, char **);
   2935 void	 server_unlink_window(struct session *, struct winlink *);
   2936 void	 server_destroy_pane(struct window_pane *, int);
   2937 void	 server_destroy_session(struct session *);
   2938 void	 server_check_unattached(void);
   2939 void	 server_unzoom_window(struct window *);
   2940 
   2941 /* status.c */
   2942 extern char	**status_prompt_hlist[];
   2943 extern u_int	  status_prompt_hsize[];
   2944 void	 status_timer_start(struct client *);
   2945 void	 status_timer_start_all(void);
   2946 void	 status_update_cache(struct session *);
   2947 u_int	 status_prompt_line_at(struct client *);
   2948 int	 status_at_line(struct client *);
   2949 u_int	 status_line_size(struct client *);
   2950 struct style_range *status_get_range(struct client *, u_int, u_int);
   2951 void	 status_init(struct client *);
   2952 void	 status_free(struct client *);
   2953 int	 status_redraw(struct client *);
   2954 void printflike(6, 7) status_message_set(struct client *, int, int, int, int,
   2955 	     const char *, ...);
   2956 void	 status_message_clear(struct client *);
   2957 int	 status_message_redraw(struct client *);
   2958 void	 status_prompt_set(struct client *, struct cmd_find_state *,
   2959 	     const char *, const char *, prompt_input_cb, prompt_free_cb,
   2960 	     void *, int, enum prompt_type);
   2961 void	 status_prompt_clear(struct client *);
   2962 int	 status_prompt_redraw(struct client *);
   2963 int	 status_prompt_key(struct client *, key_code);
   2964 void	 status_prompt_update(struct client *, const char *, const char *);
   2965 void	 status_prompt_load_history(void);
   2966 void	 status_prompt_save_history(void);
   2967 const char *status_prompt_type_string(u_int);
   2968 enum prompt_type status_prompt_type(const char *type);
   2969 
   2970 /* resize.c */
   2971 void	 resize_window(struct window *, u_int, u_int, int, int);
   2972 void	 default_window_size(struct client *, struct session *, struct window *,
   2973 	     u_int *, u_int *, u_int *, u_int *, int);
   2974 void	 recalculate_size(struct window *, int);
   2975 void	 recalculate_sizes(void);
   2976 void	 recalculate_sizes_now(int);
   2977 
   2978 /* input.c */
   2979 #define INPUT_BUF_DEFAULT_SIZE 1048576
   2980 struct input_ctx *input_init(struct window_pane *, struct bufferevent *,
   2981 	     struct colour_palette *);
   2982 void	 input_free(struct input_ctx *);
   2983 void	 input_reset(struct input_ctx *, int);
   2984 struct evbuffer *input_pending(struct input_ctx *);
   2985 void	 input_parse_pane(struct window_pane *);
   2986 void	 input_parse_buffer(struct window_pane *, u_char *, size_t);
   2987 void	 input_parse_screen(struct input_ctx *, struct screen *,
   2988 	     screen_write_init_ctx_cb, void *, u_char *, size_t);
   2989 void	 input_reply_clipboard(struct bufferevent *, const char *, size_t,
   2990 	     const char *);
   2991 void	 input_set_buffer_size(size_t);
   2992 void	 input_request_reply(struct client *, enum input_request_type, void *);
   2993 void	 input_cancel_requests(struct client *);
   2994 
   2995 /* input-key.c */
   2996 void	 input_key_build(void);
   2997 int	 input_key_pane(struct window_pane *, key_code, struct mouse_event *);
   2998 int	 input_key(struct screen *, struct bufferevent *, key_code);
   2999 int	 input_key_get_mouse(struct screen *, struct mouse_event *, u_int,
   3000 	     u_int, const char **, size_t *);
   3001 
   3002 /* colour.c */
   3003 int	 colour_find_rgb(u_char, u_char, u_char);
   3004 int	 colour_join_rgb(u_char, u_char, u_char);
   3005 void	 colour_split_rgb(int, u_char *, u_char *, u_char *);
   3006 int	 colour_force_rgb(int);
   3007 const char *colour_tostring(int);
   3008 enum client_theme colour_totheme(int);
   3009 int	 colour_fromstring(const char *);
   3010 int	 colour_256toRGB(int);
   3011 int	 colour_256to16(int);
   3012 int	 colour_byname(const char *);
   3013 int	 colour_parseX11(const char *);
   3014 void	 colour_palette_init(struct colour_palette *);
   3015 void	 colour_palette_clear(struct colour_palette *);
   3016 void	 colour_palette_free(struct colour_palette *);
   3017 int	 colour_palette_get(struct colour_palette *, int);
   3018 int	 colour_palette_set(struct colour_palette *, int, int);
   3019 void	 colour_palette_from_option(struct colour_palette *, struct options *);
   3020 
   3021 /* attributes.c */
   3022 const char *attributes_tostring(int);
   3023 int	 attributes_fromstring(const char *);
   3024 
   3025 /* grid.c */
   3026 extern const struct grid_cell grid_default_cell;
   3027 void	 grid_empty_line(struct grid *, u_int, u_int);
   3028 void	 grid_set_tab(struct grid_cell *, u_int);
   3029 int	 grid_cells_equal(const struct grid_cell *, const struct grid_cell *);
   3030 int	 grid_cells_look_equal(const struct grid_cell *,
   3031 	     const struct grid_cell *);
   3032 struct grid *grid_create(u_int, u_int, u_int);
   3033 void	 grid_destroy(struct grid *);
   3034 int	 grid_compare(struct grid *, struct grid *);
   3035 void	 grid_collect_history(struct grid *);
   3036 void	 grid_remove_history(struct grid *, u_int );
   3037 void	 grid_scroll_history(struct grid *, u_int);
   3038 void	 grid_scroll_history_region(struct grid *, u_int, u_int, u_int);
   3039 void	 grid_clear_history(struct grid *);
   3040 const struct grid_line *grid_peek_line(struct grid *, u_int);
   3041 void	 grid_get_cell(struct grid *, u_int, u_int, struct grid_cell *);
   3042 void	 grid_set_cell(struct grid *, u_int, u_int, const struct grid_cell *);
   3043 void	 grid_set_padding(struct grid *, u_int, u_int);
   3044 void	 grid_set_cells(struct grid *, u_int, u_int, const struct grid_cell *,
   3045 	     const char *, size_t);
   3046 struct grid_line *grid_get_line(struct grid *, u_int);
   3047 void	 grid_adjust_lines(struct grid *, u_int);
   3048 void	 grid_clear(struct grid *, u_int, u_int, u_int, u_int, u_int);
   3049 void	 grid_clear_lines(struct grid *, u_int, u_int, u_int);
   3050 void	 grid_move_lines(struct grid *, u_int, u_int, u_int, u_int);
   3051 void	 grid_move_cells(struct grid *, u_int, u_int, u_int, u_int, u_int);
   3052 char	*grid_string_cells(struct grid *, u_int, u_int, u_int,
   3053 	     struct grid_cell **, int, struct screen *);
   3054 void	 grid_duplicate_lines(struct grid *, u_int, struct grid *, u_int,
   3055 	     u_int);
   3056 void	 grid_reflow(struct grid *, u_int);
   3057 void	 grid_wrap_position(struct grid *, u_int, u_int, u_int *, u_int *);
   3058 void	 grid_unwrap_position(struct grid *, u_int *, u_int *, u_int, u_int);
   3059 u_int	 grid_line_length(struct grid *, u_int);
   3060 int	 grid_in_set(struct grid *, u_int, u_int, const char *);
   3061 
   3062 /* grid-reader.c */
   3063 void	 grid_reader_start(struct grid_reader *, struct grid *, u_int, u_int);
   3064 void	 grid_reader_get_cursor(struct grid_reader *, u_int *, u_int *);
   3065 u_int	 grid_reader_line_length(struct grid_reader *);
   3066 int	 grid_reader_in_set(struct grid_reader *, const char *);
   3067 void	 grid_reader_cursor_right(struct grid_reader *, int, int);
   3068 void	 grid_reader_cursor_left(struct grid_reader *, int);
   3069 void	 grid_reader_cursor_down(struct grid_reader *);
   3070 void	 grid_reader_cursor_up(struct grid_reader *);
   3071 void	 grid_reader_cursor_start_of_line(struct grid_reader *, int);
   3072 void	 grid_reader_cursor_end_of_line(struct grid_reader *, int, int);
   3073 void	 grid_reader_cursor_next_word(struct grid_reader *, const char *);
   3074 void	 grid_reader_cursor_next_word_end(struct grid_reader *, const char *);
   3075 void	 grid_reader_cursor_previous_word(struct grid_reader *, const char *,
   3076 	     int, int);
   3077 int	 grid_reader_cursor_jump(struct grid_reader *,
   3078 	     const struct utf8_data *);
   3079 int	 grid_reader_cursor_jump_back(struct grid_reader *,
   3080 	     const struct utf8_data *);
   3081 void	 grid_reader_cursor_back_to_indentation(struct grid_reader *);
   3082 
   3083 /* grid-view.c */
   3084 void	 grid_view_get_cell(struct grid *, u_int, u_int, struct grid_cell *);
   3085 void	 grid_view_set_cell(struct grid *, u_int, u_int,
   3086 	     const struct grid_cell *);
   3087 void	 grid_view_set_padding(struct grid *, u_int, u_int);
   3088 void	 grid_view_set_cells(struct grid *, u_int, u_int,
   3089 	     const struct grid_cell *, const char *, size_t);
   3090 void	 grid_view_clear_history(struct grid *, u_int);
   3091 void	 grid_view_clear(struct grid *, u_int, u_int, u_int, u_int, u_int);
   3092 void	 grid_view_scroll_region_up(struct grid *, u_int, u_int, u_int);
   3093 void	 grid_view_scroll_region_down(struct grid *, u_int, u_int, u_int);
   3094 void	 grid_view_insert_lines(struct grid *, u_int, u_int, u_int);
   3095 void	 grid_view_insert_lines_region(struct grid *, u_int, u_int, u_int,
   3096 	     u_int);
   3097 void	 grid_view_delete_lines(struct grid *, u_int, u_int, u_int);
   3098 void	 grid_view_delete_lines_region(struct grid *, u_int, u_int, u_int,
   3099 	     u_int);
   3100 void	 grid_view_insert_cells(struct grid *, u_int, u_int, u_int, u_int);
   3101 void	 grid_view_delete_cells(struct grid *, u_int, u_int, u_int, u_int);
   3102 char	*grid_view_string_cells(struct grid *, u_int, u_int, u_int);
   3103 
   3104 /* screen-write.c */
   3105 void	 screen_write_make_list(struct screen *);
   3106 void	 screen_write_free_list(struct screen *);
   3107 void	 screen_write_start_pane(struct screen_write_ctx *,
   3108 	     struct window_pane *, struct screen *);
   3109 void	 screen_write_start(struct screen_write_ctx *, struct screen *);
   3110 void	 screen_write_start_callback(struct screen_write_ctx *, struct screen *,
   3111 	     screen_write_init_ctx_cb, void *);
   3112 void	 screen_write_stop(struct screen_write_ctx *);
   3113 void	 screen_write_reset(struct screen_write_ctx *);
   3114 size_t printflike(1, 2) screen_write_strlen(const char *, ...);
   3115 int printflike(7, 8) screen_write_text(struct screen_write_ctx *, u_int, u_int,
   3116 	     u_int, int, const struct grid_cell *, const char *, ...);
   3117 void printflike(3, 4) screen_write_puts(struct screen_write_ctx *,
   3118 	     const struct grid_cell *, const char *, ...);
   3119 void printflike(4, 5) screen_write_nputs(struct screen_write_ctx *,
   3120 	     ssize_t, const struct grid_cell *, const char *, ...);
   3121 void printflike(4, 0) screen_write_vnputs(struct screen_write_ctx *, ssize_t,
   3122 	     const struct grid_cell *, const char *, va_list);
   3123 void	 screen_write_putc(struct screen_write_ctx *, const struct grid_cell *,
   3124 	     u_char);
   3125 void	 screen_write_fast_copy(struct screen_write_ctx *, struct screen *,
   3126 	     u_int, u_int, u_int, u_int);
   3127 void	 screen_write_hline(struct screen_write_ctx *, u_int, int, int,
   3128 	     enum box_lines, const struct grid_cell *);
   3129 void	 screen_write_vline(struct screen_write_ctx *, u_int, int, int);
   3130 void	 screen_write_menu(struct screen_write_ctx *, struct menu *, int,
   3131 	     enum box_lines, const struct grid_cell *, const struct grid_cell *,
   3132 	     const struct grid_cell *);
   3133 void	 screen_write_box(struct screen_write_ctx *, u_int, u_int,
   3134              enum box_lines, const struct grid_cell *, const char *);
   3135 void	 screen_write_preview(struct screen_write_ctx *, struct screen *, u_int,
   3136 	     u_int);
   3137 void	 screen_write_backspace(struct screen_write_ctx *);
   3138 void	 screen_write_mode_set(struct screen_write_ctx *, int);
   3139 void	 screen_write_mode_clear(struct screen_write_ctx *, int);
   3140 void	 screen_write_cursorup(struct screen_write_ctx *, u_int);
   3141 void	 screen_write_cursordown(struct screen_write_ctx *, u_int);
   3142 void	 screen_write_cursorright(struct screen_write_ctx *, u_int);
   3143 void	 screen_write_cursorleft(struct screen_write_ctx *, u_int);
   3144 void	 screen_write_alignmenttest(struct screen_write_ctx *);
   3145 void	 screen_write_insertcharacter(struct screen_write_ctx *, u_int, u_int);
   3146 void	 screen_write_deletecharacter(struct screen_write_ctx *, u_int, u_int);
   3147 void	 screen_write_clearcharacter(struct screen_write_ctx *, u_int, u_int);
   3148 void	 screen_write_insertline(struct screen_write_ctx *, u_int, u_int);
   3149 void	 screen_write_deleteline(struct screen_write_ctx *, u_int, u_int);
   3150 void	 screen_write_clearline(struct screen_write_ctx *, u_int);
   3151 void	 screen_write_clearendofline(struct screen_write_ctx *, u_int);
   3152 void	 screen_write_clearstartofline(struct screen_write_ctx *, u_int);
   3153 void	 screen_write_cursormove(struct screen_write_ctx *, int, int, int);
   3154 void	 screen_write_reverseindex(struct screen_write_ctx *, u_int);
   3155 void	 screen_write_scrollregion(struct screen_write_ctx *, u_int, u_int);
   3156 void	 screen_write_linefeed(struct screen_write_ctx *, int, u_int);
   3157 void	 screen_write_scrollup(struct screen_write_ctx *, u_int, u_int);
   3158 void	 screen_write_scrolldown(struct screen_write_ctx *, u_int, u_int);
   3159 void	 screen_write_carriagereturn(struct screen_write_ctx *);
   3160 void	 screen_write_clearendofscreen(struct screen_write_ctx *, u_int);
   3161 void	 screen_write_clearstartofscreen(struct screen_write_ctx *, u_int);
   3162 void	 screen_write_clearscreen(struct screen_write_ctx *, u_int);
   3163 void	 screen_write_clearhistory(struct screen_write_ctx *);
   3164 void	 screen_write_fullredraw(struct screen_write_ctx *);
   3165 void	 screen_write_collect_end(struct screen_write_ctx *);
   3166 void	 screen_write_collect_add(struct screen_write_ctx *,
   3167 	     const struct grid_cell *);
   3168 void	 screen_write_cell(struct screen_write_ctx *, const struct grid_cell *);
   3169 void	 screen_write_setselection(struct screen_write_ctx *, const char *,
   3170 	     u_char *, u_int);
   3171 void	 screen_write_rawstring(struct screen_write_ctx *, u_char *, u_int,
   3172 	     int);
   3173 #ifdef ENABLE_SIXEL
   3174 void	 screen_write_sixelimage(struct screen_write_ctx *,
   3175 	     struct sixel_image *, u_int);
   3176 #endif
   3177 void	 screen_write_alternateon(struct screen_write_ctx *,
   3178 	     struct grid_cell *, int);
   3179 void	 screen_write_alternateoff(struct screen_write_ctx *,
   3180 	     struct grid_cell *, int);
   3181 
   3182 /* screen-redraw.c */
   3183 void	 screen_redraw_screen(struct client *);
   3184 void	 screen_redraw_pane(struct client *, struct window_pane *, int);
   3185 
   3186 /* screen.c */
   3187 void	 screen_init(struct screen *, u_int, u_int, u_int);
   3188 void	 screen_reinit(struct screen *);
   3189 void	 screen_free(struct screen *);
   3190 void	 screen_reset_tabs(struct screen *);
   3191 void	 screen_reset_hyperlinks(struct screen *);
   3192 void	 screen_set_default_cursor(struct screen *, struct options *);
   3193 void	 screen_set_cursor_style(u_int, enum screen_cursor_style *, int *);
   3194 void	 screen_set_cursor_colour(struct screen *, int);
   3195 int	 screen_set_title(struct screen *, const char *);
   3196 void	 screen_set_path(struct screen *, const char *);
   3197 void	 screen_push_title(struct screen *);
   3198 void	 screen_pop_title(struct screen *);
   3199 void	 screen_resize(struct screen *, u_int, u_int, int);
   3200 void	 screen_resize_cursor(struct screen *, u_int, u_int, int, int, int);
   3201 void	 screen_set_selection(struct screen *, u_int, u_int, u_int, u_int,
   3202 	     u_int, int, struct grid_cell *);
   3203 void	 screen_clear_selection(struct screen *);
   3204 void	 screen_hide_selection(struct screen *);
   3205 int	 screen_check_selection(struct screen *, u_int, u_int);
   3206 void	 screen_select_cell(struct screen *, struct grid_cell *,
   3207 	     const struct grid_cell *);
   3208 void	 screen_alternate_on(struct screen *, struct grid_cell *, int);
   3209 void	 screen_alternate_off(struct screen *, struct grid_cell *, int);
   3210 const char *screen_mode_to_string(int);
   3211 
   3212 /* window.c */
   3213 extern struct windows windows;
   3214 extern struct window_pane_tree all_window_panes;
   3215 int		 window_cmp(struct window *, struct window *);
   3216 RB_PROTOTYPE(windows, window, entry, window_cmp);
   3217 int		 winlink_cmp(struct winlink *, struct winlink *);
   3218 RB_PROTOTYPE(winlinks, winlink, entry, winlink_cmp);
   3219 int		 window_pane_cmp(struct window_pane *, struct window_pane *);
   3220 RB_PROTOTYPE(window_pane_tree, window_pane, tree_entry, window_pane_cmp);
   3221 struct winlink	*winlink_find_by_index(struct winlinks *, int);
   3222 struct winlink	*winlink_find_by_window(struct winlinks *, struct window *);
   3223 struct winlink	*winlink_find_by_window_id(struct winlinks *, u_int);
   3224 u_int		 winlink_count(struct winlinks *);
   3225 struct winlink	*winlink_add(struct winlinks *, int);
   3226 void		 winlink_set_window(struct winlink *, struct window *);
   3227 void		 winlink_remove(struct winlinks *, struct winlink *);
   3228 struct winlink	*winlink_next(struct winlink *);
   3229 struct winlink	*winlink_previous(struct winlink *);
   3230 struct winlink	*winlink_next_by_number(struct winlink *, struct session *,
   3231 		     int);
   3232 struct winlink	*winlink_previous_by_number(struct winlink *, struct session *,
   3233 		     int);
   3234 void		 winlink_stack_push(struct winlink_stack *, struct winlink *);
   3235 void		 winlink_stack_remove(struct winlink_stack *, struct winlink *);
   3236 struct window	*window_find_by_id_str(const char *);
   3237 struct window	*window_find_by_id(u_int);
   3238 void		 window_update_activity(struct window *);
   3239 struct window	*window_create(u_int, u_int, u_int, u_int);
   3240 void		 window_pane_set_event(struct window_pane *);
   3241 struct window_pane *window_get_active_at(struct window *, u_int, u_int);
   3242 struct window_pane *window_find_string(struct window *, const char *);
   3243 int		 window_has_pane(struct window *, struct window_pane *);
   3244 int		 window_set_active_pane(struct window *, struct window_pane *,
   3245 		     int);
   3246 void		 window_update_focus(struct window *);
   3247 void		 window_pane_update_focus(struct window_pane *);
   3248 void		 window_redraw_active_switch(struct window *,
   3249 		     struct window_pane *);
   3250 struct window_pane *window_add_pane(struct window *, struct window_pane *,
   3251 		     u_int, int);
   3252 void		 window_resize(struct window *, u_int, u_int, int, int);
   3253 void		 window_pane_send_resize(struct window_pane *, u_int, u_int);
   3254 int		 window_zoom(struct window_pane *);
   3255 int		 window_unzoom(struct window *, int);
   3256 int		 window_push_zoom(struct window *, int, int);
   3257 int		 window_pop_zoom(struct window *);
   3258 void		 window_lost_pane(struct window *, struct window_pane *);
   3259 void		 window_remove_pane(struct window *, struct window_pane *);
   3260 struct window_pane *window_pane_at_index(struct window *, u_int);
   3261 struct window_pane *window_pane_next_by_number(struct window *,
   3262 			struct window_pane *, u_int);
   3263 struct window_pane *window_pane_previous_by_number(struct window *,
   3264 			struct window_pane *, u_int);
   3265 int		 window_pane_index(struct window_pane *, u_int *);
   3266 u_int		 window_count_panes(struct window *);
   3267 void		 window_destroy_panes(struct window *);
   3268 struct window_pane *window_pane_find_by_id_str(const char *);
   3269 struct window_pane *window_pane_find_by_id(u_int);
   3270 int		 window_pane_destroy_ready(struct window_pane *);
   3271 void		 window_pane_resize(struct window_pane *, u_int, u_int);
   3272 int		 window_pane_set_mode(struct window_pane *,
   3273 		     struct window_pane *, const struct window_mode *,
   3274 		     struct cmd_find_state *, struct args *);
   3275 void		 window_pane_reset_mode(struct window_pane *);
   3276 void		 window_pane_reset_mode_all(struct window_pane *);
   3277 int		 window_pane_key(struct window_pane *, struct client *,
   3278 		     struct session *, struct winlink *, key_code,
   3279 		     struct mouse_event *);
   3280 void		 window_pane_paste(struct window_pane *, key_code, char *,
   3281 		     size_t);
   3282 int		 window_pane_visible(struct window_pane *);
   3283 int		 window_pane_exited(struct window_pane *);
   3284 u_int		 window_pane_search(struct window_pane *, const char *, int,
   3285 		     int);
   3286 const char	*window_printable_flags(struct winlink *, int);
   3287 struct window_pane *window_pane_find_up(struct window_pane *);
   3288 struct window_pane *window_pane_find_down(struct window_pane *);
   3289 struct window_pane *window_pane_find_left(struct window_pane *);
   3290 struct window_pane *window_pane_find_right(struct window_pane *);
   3291 void		 window_pane_stack_push(struct window_panes *,
   3292 		     struct window_pane *);
   3293 void		 window_pane_stack_remove(struct window_panes *,
   3294 		     struct window_pane *);
   3295 void		 window_set_name(struct window *, const char *);
   3296 void		 window_add_ref(struct window *, const char *);
   3297 void		 window_remove_ref(struct window *, const char *);
   3298 void		 winlink_clear_flags(struct winlink *);
   3299 int		 winlink_shuffle_up(struct session *, struct winlink *, int);
   3300 int		 window_pane_start_input(struct window_pane *,
   3301 		     struct cmdq_item *, char **);
   3302 void		*window_pane_get_new_data(struct window_pane *,
   3303 		     struct window_pane_offset *, size_t *);
   3304 void		 window_pane_update_used_data(struct window_pane *,
   3305 		     struct window_pane_offset *, size_t);
   3306 void		 window_set_fill_character(struct window *);
   3307 void		 window_pane_default_cursor(struct window_pane *);
   3308 int		 window_pane_mode(struct window_pane *);
   3309 int		 window_pane_show_scrollbar(struct window_pane *, int);
   3310 int		 window_pane_get_bg(struct window_pane *);
   3311 int		 window_pane_get_fg(struct window_pane *);
   3312 int		 window_pane_get_fg_control_client(struct window_pane *);
   3313 int		 window_pane_get_bg_control_client(struct window_pane *);
   3314 int		 window_get_bg_client(struct window_pane *);
   3315 enum client_theme window_pane_get_theme(struct window_pane *);
   3316 void		 window_pane_send_theme_update(struct window_pane *);
   3317 
   3318 /* layout.c */
   3319 u_int		 layout_count_cells(struct layout_cell *);
   3320 struct layout_cell *layout_create_cell(struct layout_cell *);
   3321 void		 layout_free_cell(struct layout_cell *);
   3322 void		 layout_print_cell(struct layout_cell *, const char *, u_int);
   3323 void		 layout_destroy_cell(struct window *, struct layout_cell *,
   3324 		     struct layout_cell **);
   3325 void		 layout_resize_layout(struct window *, struct layout_cell *,
   3326 		     enum layout_type, int, int);
   3327 struct layout_cell *layout_search_by_border(struct layout_cell *, u_int, u_int);
   3328 void		 layout_set_size(struct layout_cell *, u_int, u_int, u_int,
   3329 		     u_int);
   3330 void		 layout_make_leaf(struct layout_cell *, struct window_pane *);
   3331 void		 layout_make_node(struct layout_cell *, enum layout_type);
   3332 void		 layout_fix_offsets(struct window *);
   3333 void		 layout_fix_panes(struct window *, struct window_pane *);
   3334 void		 layout_resize_adjust(struct window *, struct layout_cell *,
   3335 		     enum layout_type, int);
   3336 void		 layout_init(struct window *, struct window_pane *);
   3337 void		 layout_free(struct window *);
   3338 void		 layout_resize(struct window *, u_int, u_int);
   3339 void		 layout_resize_pane(struct window_pane *, enum layout_type,
   3340 		     int, int);
   3341 void		 layout_resize_pane_to(struct window_pane *, enum layout_type,
   3342 		     u_int);
   3343 void		 layout_assign_pane(struct layout_cell *, struct window_pane *,
   3344 		     int);
   3345 struct layout_cell *layout_split_pane(struct window_pane *, enum layout_type,
   3346 		     int, int);
   3347 void		 layout_close_pane(struct window_pane *);
   3348 int		 layout_spread_cell(struct window *, struct layout_cell *);
   3349 void		 layout_spread_out(struct window_pane *);
   3350 
   3351 /* layout-custom.c */
   3352 char		*layout_dump(struct layout_cell *);
   3353 int		 layout_parse(struct window *, const char *, char **);
   3354 
   3355 /* layout-set.c */
   3356 int		 layout_set_lookup(const char *);
   3357 u_int		 layout_set_select(struct window *, u_int);
   3358 u_int		 layout_set_next(struct window *);
   3359 u_int		 layout_set_previous(struct window *);
   3360 
   3361 /* mode-tree.c */
   3362 typedef void (*mode_tree_build_cb)(void *, struct mode_tree_sort_criteria *,
   3363 				   uint64_t *, const char *);
   3364 typedef void (*mode_tree_draw_cb)(void *, void *, struct screen_write_ctx *,
   3365 	     u_int, u_int);
   3366 typedef int (*mode_tree_search_cb)(void *, void *, const char *, int);
   3367 typedef void (*mode_tree_menu_cb)(void *, struct client *, key_code);
   3368 typedef u_int (*mode_tree_height_cb)(void *, u_int);
   3369 typedef key_code (*mode_tree_key_cb)(void *, void *, u_int);
   3370 typedef int (*mode_tree_swap_cb)(void *, void *);
   3371 typedef void (*mode_tree_each_cb)(void *, void *, struct client *, key_code);
   3372 u_int	 mode_tree_count_tagged(struct mode_tree_data *);
   3373 void	*mode_tree_get_current(struct mode_tree_data *);
   3374 const char *mode_tree_get_current_name(struct mode_tree_data *);
   3375 void	 mode_tree_expand_current(struct mode_tree_data *);
   3376 void	 mode_tree_collapse_current(struct mode_tree_data *);
   3377 void	 mode_tree_expand(struct mode_tree_data *, uint64_t);
   3378 int	 mode_tree_set_current(struct mode_tree_data *, uint64_t);
   3379 void	 mode_tree_each_tagged(struct mode_tree_data *, mode_tree_each_cb,
   3380 	     struct client *, key_code, int);
   3381 void	 mode_tree_up(struct mode_tree_data *, int);
   3382 int	 mode_tree_down(struct mode_tree_data *, int);
   3383 struct mode_tree_data *mode_tree_start(struct window_pane *, struct args *,
   3384 	     mode_tree_build_cb, mode_tree_draw_cb, mode_tree_search_cb,
   3385 	     mode_tree_menu_cb, mode_tree_height_cb, mode_tree_key_cb,
   3386 	     mode_tree_swap_cb, void *, const struct menu_item *, const char **,
   3387 	     u_int, struct screen **);
   3388 void	 mode_tree_zoom(struct mode_tree_data *, struct args *);
   3389 void	 mode_tree_build(struct mode_tree_data *);
   3390 void	 mode_tree_free(struct mode_tree_data *);
   3391 void	 mode_tree_resize(struct mode_tree_data *, u_int, u_int);
   3392 struct mode_tree_item *mode_tree_add(struct mode_tree_data *,
   3393 	     struct mode_tree_item *, void *, uint64_t, const char *,
   3394 	     const char *, int);
   3395 void	 mode_tree_draw_as_parent(struct mode_tree_item *);
   3396 void	 mode_tree_no_tag(struct mode_tree_item *);
   3397 void	 mode_tree_align(struct mode_tree_item *, int);
   3398 void	 mode_tree_remove(struct mode_tree_data *, struct mode_tree_item *);
   3399 void	 mode_tree_draw(struct mode_tree_data *);
   3400 int	 mode_tree_key(struct mode_tree_data *, struct client *, key_code *,
   3401 	     struct mouse_event *, u_int *, u_int *);
   3402 void	 mode_tree_run_command(struct client *, struct cmd_find_state *,
   3403 	     const char *, const char *);
   3404 
   3405 /* window-buffer.c */
   3406 extern const struct window_mode window_buffer_mode;
   3407 
   3408 /* window-tree.c */
   3409 extern const struct window_mode window_tree_mode;
   3410 
   3411 /* window-clock.c */
   3412 extern const struct window_mode window_clock_mode;
   3413 extern const char window_clock_table[14][5][5];
   3414 
   3415 /* window-client.c */
   3416 extern const struct window_mode window_client_mode;
   3417 
   3418 /* window-copy.c */
   3419 extern const struct window_mode window_copy_mode;
   3420 extern const struct window_mode window_view_mode;
   3421 void printflike(3, 4) window_copy_add(struct window_pane *, int, const char *,
   3422 		     ...);
   3423 void printflike(3, 0) window_copy_vadd(struct window_pane *, int, const char *,
   3424 		     va_list);
   3425 void		 window_copy_scroll(struct window_pane *, int, u_int, int);
   3426 void		 window_copy_pageup(struct window_pane *, int);
   3427 void		 window_copy_pagedown(struct window_pane *, int, int);
   3428 void		 window_copy_start_drag(struct client *, struct mouse_event *);
   3429 char		*window_copy_get_word(struct window_pane *, u_int, u_int);
   3430 char		*window_copy_get_line(struct window_pane *, u_int);
   3431 int		 window_copy_get_current_offset(struct window_pane *, u_int *,
   3432 		     u_int *);
   3433 char		*window_copy_get_hyperlink(struct window_pane *, u_int, u_int);
   3434 
   3435 /* window-option.c */
   3436 extern const struct window_mode window_customize_mode;
   3437 
   3438 /* names.c */
   3439 void	 check_window_name(struct window *);
   3440 char	*default_window_name(struct window *);
   3441 char	*parse_window_name(const char *);
   3442 
   3443 /* control.c */
   3444 void	control_discard(struct client *);
   3445 void	control_start(struct client *);
   3446 void	control_ready(struct client *);
   3447 void	control_stop(struct client *);
   3448 void	control_set_pane_on(struct client *, struct window_pane *);
   3449 void	control_set_pane_off(struct client *, struct window_pane *);
   3450 void	control_continue_pane(struct client *, struct window_pane *);
   3451 void	control_pause_pane(struct client *, struct window_pane *);
   3452 struct window_pane_offset *control_pane_offset(struct client *,
   3453 	   struct window_pane *, int *);
   3454 void	control_reset_offsets(struct client *);
   3455 void printflike(2, 3) control_write(struct client *, const char *, ...);
   3456 void	control_write_output(struct client *, struct window_pane *);
   3457 int	control_all_done(struct client *);
   3458 void	control_add_sub(struct client *, const char *, enum control_sub_type,
   3459     	   int, const char *);
   3460 void	control_remove_sub(struct client *, const char *);
   3461 
   3462 /* control-notify.c */
   3463 void	control_notify_pane_mode_changed(int);
   3464 void	control_notify_window_layout_changed(struct window *);
   3465 void	control_notify_window_pane_changed(struct window *);
   3466 void	control_notify_window_unlinked(struct session *, struct window *);
   3467 void	control_notify_window_linked(struct session *, struct window *);
   3468 void	control_notify_window_renamed(struct window *);
   3469 void	control_notify_client_session_changed(struct client *);
   3470 void	control_notify_client_detached(struct client *);
   3471 void	control_notify_session_renamed(struct session *);
   3472 void	control_notify_session_created(struct session *);
   3473 void	control_notify_session_closed(struct session *);
   3474 void	control_notify_session_window_changed(struct session *);
   3475 void	control_notify_paste_buffer_changed(const char *);
   3476 void	control_notify_paste_buffer_deleted(const char *);
   3477 
   3478 /* session.c */
   3479 extern struct sessions sessions;
   3480 extern struct session_groups session_groups;
   3481 extern u_int next_session_id;
   3482 int	session_cmp(struct session *, struct session *);
   3483 RB_PROTOTYPE(sessions, session, entry, session_cmp);
   3484 int	session_group_cmp(struct session_group *, struct session_group *s2);
   3485 RB_PROTOTYPE(session_groups, session_group, entry, session_group_cmp);
   3486 int		 session_alive(struct session *);
   3487 struct session	*session_find(const char *);
   3488 struct session	*session_find_by_id_str(const char *);
   3489 struct session	*session_find_by_id(u_int);
   3490 struct session	*session_create(const char *, const char *, const char *,
   3491 		     struct environ *, struct options *, struct termios *);
   3492 void		 session_destroy(struct session *, int,	 const char *);
   3493 void		 session_add_ref(struct session *, const char *);
   3494 void		 session_remove_ref(struct session *, const char *);
   3495 char		*session_check_name(const char *);
   3496 void		 session_update_activity(struct session *, struct timeval *);
   3497 struct session	*session_next_session(struct session *);
   3498 struct session	*session_previous_session(struct session *);
   3499 struct winlink	*session_attach(struct session *, struct window *, int,
   3500 		     char **);
   3501 int		 session_detach(struct session *, struct winlink *);
   3502 int		 session_has(struct session *, struct window *);
   3503 int		 session_is_linked(struct session *, struct window *);
   3504 int		 session_next(struct session *, int);
   3505 int		 session_previous(struct session *, int);
   3506 int		 session_select(struct session *, int);
   3507 int		 session_last(struct session *);
   3508 int		 session_set_current(struct session *, struct winlink *);
   3509 struct session_group *session_group_contains(struct session *);
   3510 struct session_group *session_group_find(const char *);
   3511 struct session_group *session_group_new(const char *);
   3512 void		 session_group_add(struct session_group *, struct session *);
   3513 void		 session_group_synchronize_to(struct session *);
   3514 void		 session_group_synchronize_from(struct session *);
   3515 u_int		 session_group_count(struct session_group *);
   3516 u_int		 session_group_attached_count(struct session_group *);
   3517 void		 session_renumber_windows(struct session *);
   3518 void		 session_theme_changed(struct session *);
   3519 
   3520 /* utf8.c */
   3521 enum utf8_state	 utf8_towc (const struct utf8_data *, wchar_t *);
   3522 enum utf8_state	 utf8_fromwc(wchar_t wc, struct utf8_data *);
   3523 void		 utf8_update_width_cache(void);
   3524 utf8_char	 utf8_build_one(u_char);
   3525 enum utf8_state	 utf8_from_data(const struct utf8_data *, utf8_char *);
   3526 void		 utf8_to_data(utf8_char, struct utf8_data *);
   3527 void		 utf8_set(struct utf8_data *, u_char);
   3528 void		 utf8_copy(struct utf8_data *, const struct utf8_data *);
   3529 enum utf8_state	 utf8_open(struct utf8_data *, u_char);
   3530 enum utf8_state	 utf8_append(struct utf8_data *, u_char);
   3531 int		 utf8_isvalid(const char *);
   3532 int		 utf8_strvis(char *, const char *, size_t, int);
   3533 int		 utf8_stravis(char **, const char *, int);
   3534 int		 utf8_stravisx(char **, const char *, size_t, int);
   3535 char		*utf8_sanitize(const char *);
   3536 size_t		 utf8_strlen(const struct utf8_data *);
   3537 u_int		 utf8_strwidth(const struct utf8_data *, ssize_t);
   3538 struct utf8_data *utf8_fromcstr(const char *);
   3539 char		*utf8_tocstr(struct utf8_data *);
   3540 u_int		 utf8_cstrwidth(const char *);
   3541 char		*utf8_padcstr(const char *, u_int);
   3542 char		*utf8_rpadcstr(const char *, u_int);
   3543 int		 utf8_cstrhas(const char *, const struct utf8_data *);
   3544 
   3545 /* osdep-*.c */
   3546 char		*osdep_get_name(int, char *);
   3547 char		*osdep_get_cwd(int);
   3548 struct event_base *osdep_event_init(void);
   3549 
   3550 /* utf8-combined.c */
   3551 int		 utf8_has_zwj(const struct utf8_data *);
   3552 int		 utf8_is_zwj(const struct utf8_data *);
   3553 int		 utf8_is_vs(const struct utf8_data *);
   3554 int		 utf8_is_hangul_filler(const struct utf8_data *);
   3555 int		 utf8_should_combine(const struct utf8_data *,
   3556 		    const struct utf8_data *);
   3557 enum hanguljamo_state hanguljamo_check_state(const struct utf8_data *,
   3558 		    const struct utf8_data *);
   3559 
   3560 /* log.c */
   3561 void	log_add_level(void);
   3562 int	log_get_level(void);
   3563 void	log_open(const char *);
   3564 void	log_toggle(const char *);
   3565 void	log_close(void);
   3566 void printflike(1, 2) log_debug(const char *, ...);
   3567 __dead void printflike(1, 2) fatal(const char *, ...);
   3568 __dead void printflike(1, 2) fatalx(const char *, ...);
   3569 
   3570 /* menu.c */
   3571 #define MENU_NOMOUSE 0x1
   3572 #define MENU_TAB 0x2
   3573 #define MENU_STAYOPEN 0x4
   3574 struct menu	*menu_create(const char *);
   3575 void		 menu_add_items(struct menu *, const struct menu_item *,
   3576 		    struct cmdq_item *, struct client *,
   3577 		    struct cmd_find_state *);
   3578 void		 menu_add_item(struct menu *, const struct menu_item *,
   3579 		    struct cmdq_item *, struct client *,
   3580 		    struct cmd_find_state *);
   3581 void		 menu_free(struct menu *);
   3582 struct menu_data *menu_prepare(struct menu *, int, int, struct cmdq_item *,
   3583 		    u_int, u_int, struct client *, enum box_lines, const char *,
   3584 		    const char *, const char *, struct cmd_find_state *,
   3585 		    menu_choice_cb, void *);
   3586 int		 menu_display(struct menu *, int, int, struct cmdq_item *,
   3587 		    u_int, u_int, struct client *, enum box_lines, const char *,
   3588 		    const char *, const char *, struct cmd_find_state *,
   3589 		    menu_choice_cb, void *);
   3590 struct screen	*menu_mode_cb(struct client *, void *, u_int *, u_int *);
   3591 void		 menu_check_cb(struct client *, void *, u_int, u_int, u_int,
   3592 		    struct overlay_ranges *);
   3593 void		 menu_draw_cb(struct client *, void *,
   3594 		    struct screen_redraw_ctx *);
   3595 void		 menu_free_cb(struct client *, void *);
   3596 int		 menu_key_cb(struct client *, void *, struct key_event *);
   3597 
   3598 /* popup.c */
   3599 #define POPUP_CLOSEEXIT 0x1
   3600 #define POPUP_CLOSEEXITZERO 0x2
   3601 #define POPUP_INTERNAL 0x4
   3602 #define POPUP_CLOSEANYKEY 0x8
   3603 typedef void (*popup_close_cb)(int, void *);
   3604 typedef void (*popup_finish_edit_cb)(char *, size_t, void *);
   3605 int		 popup_display(int, enum box_lines, struct cmdq_item *, u_int,
   3606                     u_int, u_int, u_int, struct environ *, const char *, int,
   3607                     char **, const char *, const char *, struct client *,
   3608                     struct session *, const char *, const char *,
   3609                     popup_close_cb, void *);
   3610 int		 popup_editor(struct client *, const char *, size_t,
   3611 		    popup_finish_edit_cb, void *);
   3612 int		 popup_present(struct client *);
   3613 int		 popup_modify(struct client *, const char *, const char *,
   3614 		    const char *, enum box_lines, int);
   3615 
   3616 /* style.c */
   3617 int		 style_parse(struct style *,const struct grid_cell *,
   3618 		     const char *);
   3619 const char	*style_tostring(struct style *);
   3620 void		 style_add(struct grid_cell *, struct options *,
   3621 		     const char *, struct format_tree *);
   3622 void		 style_apply(struct grid_cell *, struct options *,
   3623 		     const char *, struct format_tree *);
   3624 void		 style_set(struct style *, const struct grid_cell *);
   3625 void		 style_copy(struct style *, struct style *);
   3626 void		 style_set_scrollbar_style_from_option(struct style *,
   3627 		     struct options *);
   3628 
   3629 /* spawn.c */
   3630 struct winlink	*spawn_window(struct spawn_context *, char **);
   3631 struct window_pane *spawn_pane(struct spawn_context *, char **);
   3632 
   3633 /* regsub.c */
   3634 char		*regsub(const char *, const char *, const char *, int);
   3635 
   3636 #ifdef ENABLE_SIXEL
   3637 /* image.c */
   3638 int		 image_free_all(struct screen *);
   3639 struct image	*image_store(struct screen *, struct sixel_image *);
   3640 int		 image_check_line(struct screen *, u_int, u_int);
   3641 int		 image_check_area(struct screen *, u_int, u_int, u_int, u_int);
   3642 int		 image_scroll_up(struct screen *, u_int);
   3643 
   3644 /* image-sixel.c */
   3645 #define SIXEL_COLOUR_REGISTERS 1024
   3646 struct sixel_image *sixel_parse(const char *, size_t, u_int, u_int, u_int);
   3647 void		 sixel_free(struct sixel_image *);
   3648 void		 sixel_log(struct sixel_image *);
   3649 void		 sixel_size_in_cells(struct sixel_image *, u_int *, u_int *);
   3650 struct sixel_image *sixel_scale(struct sixel_image *, u_int, u_int, u_int,
   3651 		     u_int, u_int, u_int, int);
   3652 char		*sixel_print(struct sixel_image *, struct sixel_image *,
   3653 		     size_t *);
   3654 struct screen	*sixel_to_screen(struct sixel_image *);
   3655 #endif
   3656 
   3657 /* server-acl.c */
   3658 void			 server_acl_init(void);
   3659 struct server_acl_user	*server_acl_user_find(uid_t);
   3660 void 			 server_acl_display(struct cmdq_item *);
   3661 void			 server_acl_user_allow(uid_t);
   3662 void			 server_acl_user_deny(uid_t);
   3663 void			 server_acl_user_allow_write(uid_t);
   3664 void			 server_acl_user_deny_write(uid_t);
   3665 int			 server_acl_join(struct client *);
   3666 uid_t			 server_acl_get_uid(struct server_acl_user *);
   3667 
   3668 /* hyperlink.c */
   3669 u_int	 		 hyperlinks_put(struct hyperlinks *, const char *,
   3670 			     const char *);
   3671 int			 hyperlinks_get(struct hyperlinks *, u_int,
   3672 			     const char **, const char **, const char **);
   3673 struct hyperlinks	*hyperlinks_init(void);
   3674 struct hyperlinks	*hyperlinks_copy(struct hyperlinks *);
   3675 void			 hyperlinks_reset(struct hyperlinks *);
   3676 void			 hyperlinks_free(struct hyperlinks *);
   3677 
   3678 #endif /* TMUX_H */
   3679