Simple Terminal from SuckLess
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  1. /* See LICENSE for licence details. */
  2. #include <ctype.h>
  3. #include <errno.h>
  4. #include <fcntl.h>
  5. #include <limits.h>
  6. #include <locale.h>
  7. #include <pwd.h>
  8. #include <stdarg.h>
  9. #include <stdbool.h>
  10. #include <stdio.h>
  11. #include <stdlib.h>
  12. #include <string.h>
  13. #include <signal.h>
  14. #include <sys/ioctl.h>
  15. #include <sys/select.h>
  16. #include <sys/stat.h>
  17. #include <sys/time.h>
  18. #include <sys/types.h>
  19. #include <sys/wait.h>
  20. #include <time.h>
  21. #include <unistd.h>
  22. #include <libgen.h>
  23. #include <X11/Xatom.h>
  24. #include <X11/Xlib.h>
  25. #include <X11/Xutil.h>
  26. #include <X11/cursorfont.h>
  27. #include <X11/keysym.h>
  28. #include <X11/Xft/Xft.h>
  29. #include <fontconfig/fontconfig.h>
  30. #include <wchar.h>
  31. #include "arg.h"
  32. char *argv0;
  33. #define Glyph Glyph_
  34. #define Font Font_
  35. #define Draw XftDraw *
  36. #define Colour XftColor
  37. #define Colourmap Colormap
  38. #define Rectangle XRectangle
  39. #if defined(__linux)
  40. #include <pty.h>
  41. #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
  42. #include <util.h>
  43. #elif defined(__FreeBSD__) || defined(__DragonFly__)
  44. #include <libutil.h>
  45. #endif
  46. /* XEMBED messages */
  47. #define XEMBED_FOCUS_IN 4
  48. #define XEMBED_FOCUS_OUT 5
  49. /* Arbitrary sizes */
  50. #define UTF_SIZ 4
  51. #define ESC_BUF_SIZ (128*UTF_SIZ)
  52. #define ESC_ARG_SIZ 16
  53. #define STR_BUF_SIZ ESC_BUF_SIZ
  54. #define STR_ARG_SIZ ESC_ARG_SIZ
  55. #define DRAW_BUF_SIZ 20*1024
  56. #define XK_ANY_MOD UINT_MAX
  57. #define XK_NO_MOD 0
  58. #define XK_SWITCH_MOD (1<<13)
  59. #define REDRAW_TIMEOUT (80*1000) /* 80 ms */
  60. /* macros */
  61. #define SERRNO strerror(errno)
  62. #define MIN(a, b) ((a) < (b) ? (a) : (b))
  63. #define MAX(a, b) ((a) < (b) ? (b) : (a))
  64. #define LEN(a) (sizeof(a) / sizeof(a[0]))
  65. #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
  66. #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
  67. #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
  68. #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
  69. #define IS_SET(flag) ((term.mode & (flag)) != 0)
  70. #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000)
  71. #define CEIL(x) (((x) != (int) (x)) ? (x) + 1 : (x))
  72. #define TRUECOLOR(r,g,b) (1 << 24 | (r) << 16 | (g) << 8 | (b))
  73. #define IS_TRUECOL(x) (1 << 24 & (x))
  74. #define TRUERED(x) (((x) & 0xff0000) >> 8)
  75. #define TRUEGREEN(x) (((x) & 0xff00))
  76. #define TRUEBLUE(x) (((x) & 0xff) << 8)
  77. #define VT102ID "\033[?6c"
  78. enum glyph_attribute {
  79. ATTR_NULL = 0,
  80. ATTR_REVERSE = 1,
  81. ATTR_UNDERLINE = 2,
  82. ATTR_BOLD = 4,
  83. ATTR_GFX = 8,
  84. ATTR_ITALIC = 16,
  85. ATTR_BLINK = 32,
  86. ATTR_WRAP = 64,
  87. ATTR_WIDE = 128,
  88. ATTR_WDUMMY = 256,
  89. };
  90. enum cursor_movement {
  91. CURSOR_SAVE,
  92. CURSOR_LOAD
  93. };
  94. enum cursor_state {
  95. CURSOR_DEFAULT = 0,
  96. CURSOR_WRAPNEXT = 1,
  97. CURSOR_ORIGIN = 2
  98. };
  99. enum term_mode {
  100. MODE_WRAP = 1,
  101. MODE_INSERT = 2,
  102. MODE_APPKEYPAD = 4,
  103. MODE_ALTSCREEN = 8,
  104. MODE_CRLF = 16,
  105. MODE_MOUSEBTN = 32,
  106. MODE_MOUSEMOTION = 64,
  107. MODE_REVERSE = 128,
  108. MODE_KBDLOCK = 256,
  109. MODE_HIDE = 512,
  110. MODE_ECHO = 1024,
  111. MODE_APPCURSOR = 2048,
  112. MODE_MOUSESGR = 4096,
  113. MODE_8BIT = 8192,
  114. MODE_BLINK = 16384,
  115. MODE_FBLINK = 32768,
  116. MODE_FOCUS = 65536,
  117. MODE_MOUSEX10 = 131072,
  118. MODE_MOUSEMANY = 262144,
  119. MODE_BRCKTPASTE = 524288,
  120. MODE_MOUSE = MODE_MOUSEBTN|MODE_MOUSEMOTION|MODE_MOUSEX10\
  121. |MODE_MOUSEMANY,
  122. };
  123. enum charset {
  124. CS_GRAPHIC0,
  125. CS_GRAPHIC1,
  126. CS_UK,
  127. CS_USA,
  128. CS_MULTI,
  129. CS_GER,
  130. CS_FIN
  131. };
  132. enum escape_state {
  133. ESC_START = 1,
  134. ESC_CSI = 2,
  135. ESC_STR = 4, /* DSC, OSC, PM, APC */
  136. ESC_ALTCHARSET = 8,
  137. ESC_STR_END = 16, /* a final string was encountered */
  138. ESC_TEST = 32, /* Enter in test mode */
  139. };
  140. enum window_state {
  141. WIN_VISIBLE = 1,
  142. WIN_REDRAW = 2,
  143. WIN_FOCUSED = 4
  144. };
  145. enum selection_type {
  146. SEL_REGULAR = 1,
  147. SEL_RECTANGULAR = 2
  148. };
  149. enum selection_snap {
  150. SNAP_WORD = 1,
  151. SNAP_LINE = 2
  152. };
  153. typedef unsigned char uchar;
  154. typedef unsigned int uint;
  155. typedef unsigned long ulong;
  156. typedef unsigned short ushort;
  157. typedef struct {
  158. char c[UTF_SIZ]; /* character code */
  159. ushort mode; /* attribute flags */
  160. ulong fg; /* foreground */
  161. ulong bg; /* background */
  162. } Glyph;
  163. typedef Glyph *Line;
  164. typedef struct {
  165. Glyph attr; /* current char attributes */
  166. int x;
  167. int y;
  168. char state;
  169. } TCursor;
  170. /* CSI Escape sequence structs */
  171. /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
  172. typedef struct {
  173. char buf[ESC_BUF_SIZ]; /* raw string */
  174. int len; /* raw string length */
  175. char priv;
  176. int arg[ESC_ARG_SIZ];
  177. int narg; /* nb of args */
  178. char mode;
  179. } CSIEscape;
  180. /* STR Escape sequence structs */
  181. /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
  182. typedef struct {
  183. char type; /* ESC type ... */
  184. char buf[STR_BUF_SIZ]; /* raw string */
  185. int len; /* raw string length */
  186. char *args[STR_ARG_SIZ];
  187. int narg; /* nb of args */
  188. } STREscape;
  189. /* Internal representation of the screen */
  190. typedef struct {
  191. int row; /* nb row */
  192. int col; /* nb col */
  193. Line *line; /* screen */
  194. Line *alt; /* alternate screen */
  195. bool *dirty; /* dirtyness of lines */
  196. TCursor c; /* cursor */
  197. int top; /* top scroll limit */
  198. int bot; /* bottom scroll limit */
  199. int mode; /* terminal mode flags */
  200. int esc; /* escape state flags */
  201. char trantbl[4]; /* charset table translation */
  202. int charset; /* current charset */
  203. int icharset; /* selected charset for sequence */
  204. bool numlock; /* lock numbers in keyboard */
  205. bool *tabs;
  206. } Term;
  207. /* Purely graphic info */
  208. typedef struct {
  209. Display *dpy;
  210. Colourmap cmap;
  211. Window win;
  212. Drawable buf;
  213. Atom xembed, wmdeletewin;
  214. XIM xim;
  215. XIC xic;
  216. Draw draw;
  217. Visual *vis;
  218. XSetWindowAttributes attrs;
  219. int scr;
  220. bool isfixed; /* is fixed geometry? */
  221. int fx, fy, fw, fh; /* fixed geometry */
  222. int tw, th; /* tty width and height */
  223. int w, h; /* window width and height */
  224. int ch; /* char height */
  225. int cw; /* char width */
  226. char state; /* focus, redraw, visible */
  227. } XWindow;
  228. typedef struct {
  229. int b;
  230. uint mask;
  231. char s[ESC_BUF_SIZ];
  232. } Mousekey;
  233. typedef struct {
  234. KeySym k;
  235. uint mask;
  236. char *s;
  237. /* three valued logic variables: 0 indifferent, 1 on, -1 off */
  238. signed char appkey; /* application keypad */
  239. signed char appcursor; /* application cursor */
  240. signed char crlf; /* crlf mode */
  241. } Key;
  242. typedef struct {
  243. int mode;
  244. int type;
  245. int snap;
  246. /*
  247. * Selection variables:
  248. * nb normalized coordinates of the beginning of the selection
  249. * ne normalized coordinates of the end of the selection
  250. * ob original coordinates of the beginning of the selection
  251. * oe original coordinates of the end of the selection
  252. */
  253. struct {
  254. int x, y;
  255. } nb, ne, ob, oe;
  256. char *clip;
  257. Atom xtarget;
  258. bool alt;
  259. struct timeval tclick1;
  260. struct timeval tclick2;
  261. } Selection;
  262. typedef union {
  263. int i;
  264. unsigned int ui;
  265. float f;
  266. const void *v;
  267. } Arg;
  268. typedef struct {
  269. unsigned int mod;
  270. KeySym keysym;
  271. void (*func)(const Arg *);
  272. const Arg arg;
  273. } Shortcut;
  274. /* function definitions used in config.h */
  275. static void clippaste(const Arg *);
  276. static void numlock(const Arg *);
  277. static void selpaste(const Arg *);
  278. static void xzoom(const Arg *);
  279. /* Config.h for applying patches and the configuration. */
  280. #include "config.h"
  281. /* Font structure */
  282. typedef struct {
  283. int height;
  284. int width;
  285. int ascent;
  286. int descent;
  287. short lbearing;
  288. short rbearing;
  289. XftFont *match;
  290. FcFontSet *set;
  291. FcPattern *pattern;
  292. } Font;
  293. /* Drawing Context */
  294. typedef struct {
  295. Colour col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
  296. Font font, bfont, ifont, ibfont;
  297. GC gc;
  298. } DC;
  299. static void die(const char *, ...);
  300. static void draw(void);
  301. static void redraw(int);
  302. static void drawregion(int, int, int, int);
  303. static void execsh(void);
  304. static void sigchld(int);
  305. static void run(void);
  306. static void csidump(void);
  307. static void csihandle(void);
  308. static void csiparse(void);
  309. static void csireset(void);
  310. static void strdump(void);
  311. static void strhandle(void);
  312. static void strparse(void);
  313. static void strreset(void);
  314. static int tattrset(int);
  315. static void tclearregion(int, int, int, int);
  316. static void tcursor(int);
  317. static void tdeletechar(int);
  318. static void tdeleteline(int);
  319. static void tinsertblank(int);
  320. static void tinsertblankline(int);
  321. static void tmoveto(int, int);
  322. static void tmoveato(int x, int y);
  323. static void tnew(int, int);
  324. static void tnewline(int);
  325. static void tputtab(bool);
  326. static void tputc(char *, int);
  327. static void treset(void);
  328. static int tresize(int, int);
  329. static void tscrollup(int, int);
  330. static void tscrolldown(int, int);
  331. static void tsetattr(int*, int);
  332. static void tsetchar(char *, Glyph *, int, int);
  333. static void tsetscroll(int, int);
  334. static void tswapscreen(void);
  335. static void tsetdirt(int, int);
  336. static void tsetdirtattr(int);
  337. static void tsetmode(bool, bool, int *, int);
  338. static void tfulldirt(void);
  339. static void techo(char *, int);
  340. static long tdefcolor(int *, int *, int);
  341. static void tselcs(void);
  342. static void tdeftran(char);
  343. static inline bool match(uint, uint);
  344. static void ttynew(void);
  345. static void ttyread(void);
  346. static void ttyresize(void);
  347. static void ttywrite(const char *, size_t);
  348. static void xdraws(char *, Glyph, int, int, int, int);
  349. static void xhints(void);
  350. static void xclear(int, int, int, int);
  351. static void xdrawcursor(void);
  352. static void xinit(void);
  353. static void xloadcols(void);
  354. static int xsetcolorname(int, const char *);
  355. static int xloadfont(Font *, FcPattern *);
  356. static void xloadfonts(char *, int);
  357. static int xloadfontset(Font *);
  358. static void xsettitle(char *);
  359. static void xresettitle(void);
  360. static void xsetpointermotion(int);
  361. static void xseturgency(int);
  362. static void xsetsel(char*);
  363. static void xtermclear(int, int, int, int);
  364. static void xunloadfont(Font *f);
  365. static void xunloadfonts(void);
  366. static void xresize(int, int);
  367. static void expose(XEvent *);
  368. static void visibility(XEvent *);
  369. static void unmap(XEvent *);
  370. static char *kmap(KeySym, uint);
  371. static void kpress(XEvent *);
  372. static void cmessage(XEvent *);
  373. static void cresize(int, int);
  374. static void resize(XEvent *);
  375. static void focus(XEvent *);
  376. static void brelease(XEvent *);
  377. static void bpress(XEvent *);
  378. static void bmotion(XEvent *);
  379. static void selnotify(XEvent *);
  380. static void selclear(XEvent *);
  381. static void selrequest(XEvent *);
  382. static void selinit(void);
  383. static void selsort(void);
  384. static inline bool selected(int, int);
  385. static void selcopy(void);
  386. static void selscroll(int, int);
  387. static void selsnap(int, int *, int *, int);
  388. static int utf8decode(char *, long *);
  389. static int utf8encode(long *, char *);
  390. static int utf8size(char *);
  391. static int isfullutf8(char *, int);
  392. static ssize_t xwrite(int, char *, size_t);
  393. static void *xmalloc(size_t);
  394. static void *xrealloc(void *, size_t);
  395. static void (*handler[LASTEvent])(XEvent *) = {
  396. [KeyPress] = kpress,
  397. [ClientMessage] = cmessage,
  398. [ConfigureNotify] = resize,
  399. [VisibilityNotify] = visibility,
  400. [UnmapNotify] = unmap,
  401. [Expose] = expose,
  402. [FocusIn] = focus,
  403. [FocusOut] = focus,
  404. [MotionNotify] = bmotion,
  405. [ButtonPress] = bpress,
  406. [ButtonRelease] = brelease,
  407. [SelectionClear] = selclear,
  408. [SelectionNotify] = selnotify,
  409. [SelectionRequest] = selrequest,
  410. };
  411. /* Globals */
  412. static DC dc;
  413. static XWindow xw;
  414. static Term term;
  415. static CSIEscape csiescseq;
  416. static STREscape strescseq;
  417. static int cmdfd;
  418. static pid_t pid;
  419. static Selection sel;
  420. static int iofd = -1;
  421. static char **opt_cmd = NULL;
  422. static char *opt_io = NULL;
  423. static char *opt_title = NULL;
  424. static char *opt_embed = NULL;
  425. static char *opt_class = NULL;
  426. static char *opt_font = NULL;
  427. static int oldbutton = 3; /* button event on startup: 3 = release */
  428. static char *usedfont = NULL;
  429. static int usedfontsize = 0;
  430. /* Font Ring Cache */
  431. enum {
  432. FRC_NORMAL,
  433. FRC_ITALIC,
  434. FRC_BOLD,
  435. FRC_ITALICBOLD
  436. };
  437. typedef struct {
  438. XftFont *font;
  439. int flags;
  440. } Fontcache;
  441. /* Fontcache is an array now. A new font will be appended to the array. */
  442. static Fontcache frc[16];
  443. static int frclen = 0;
  444. ssize_t
  445. xwrite(int fd, char *s, size_t len) {
  446. size_t aux = len;
  447. while(len > 0) {
  448. ssize_t r = write(fd, s, len);
  449. if(r < 0)
  450. return r;
  451. len -= r;
  452. s += r;
  453. }
  454. return aux;
  455. }
  456. void *
  457. xmalloc(size_t len) {
  458. void *p = malloc(len);
  459. if(!p)
  460. die("Out of memory\n");
  461. return p;
  462. }
  463. void *
  464. xrealloc(void *p, size_t len) {
  465. if((p = realloc(p, len)) == NULL)
  466. die("Out of memory\n");
  467. return p;
  468. }
  469. int
  470. utf8decode(char *s, long *u) {
  471. uchar c;
  472. int i, n, rtn;
  473. rtn = 1;
  474. c = *s;
  475. if(~c & 0x80) { /* 0xxxxxxx */
  476. *u = c;
  477. return rtn;
  478. } else if((c & 0xE0) == 0xC0) { /* 110xxxxx */
  479. *u = c & 0x1F;
  480. n = 1;
  481. } else if((c & 0xF0) == 0xE0) { /* 1110xxxx */
  482. *u = c & 0x0F;
  483. n = 2;
  484. } else if((c & 0xF8) == 0xF0) { /* 11110xxx */
  485. *u = c & 0x07;
  486. n = 3;
  487. } else {
  488. goto invalid;
  489. }
  490. for(i = n, ++s; i > 0; --i, ++rtn, ++s) {
  491. c = *s;
  492. if((c & 0xC0) != 0x80) /* 10xxxxxx */
  493. goto invalid;
  494. *u <<= 6;
  495. *u |= c & 0x3F;
  496. }
  497. if((n == 1 && *u < 0x80) ||
  498. (n == 2 && *u < 0x800) ||
  499. (n == 3 && *u < 0x10000) ||
  500. (*u >= 0xD800 && *u <= 0xDFFF)) {
  501. goto invalid;
  502. }
  503. return rtn;
  504. invalid:
  505. *u = 0xFFFD;
  506. return rtn;
  507. }
  508. int
  509. utf8encode(long *u, char *s) {
  510. uchar *sp;
  511. ulong uc;
  512. int i, n;
  513. sp = (uchar *)s;
  514. uc = *u;
  515. if(uc < 0x80) {
  516. *sp = uc; /* 0xxxxxxx */
  517. return 1;
  518. } else if(*u < 0x800) {
  519. *sp = (uc >> 6) | 0xC0; /* 110xxxxx */
  520. n = 1;
  521. } else if(uc < 0x10000) {
  522. *sp = (uc >> 12) | 0xE0; /* 1110xxxx */
  523. n = 2;
  524. } else if(uc <= 0x10FFFF) {
  525. *sp = (uc >> 18) | 0xF0; /* 11110xxx */
  526. n = 3;
  527. } else {
  528. goto invalid;
  529. }
  530. for(i=n,++sp; i>0; --i,++sp)
  531. *sp = ((uc >> 6*(i-1)) & 0x3F) | 0x80; /* 10xxxxxx */
  532. return n+1;
  533. invalid:
  534. /* U+FFFD */
  535. *s++ = '\xEF';
  536. *s++ = '\xBF';
  537. *s = '\xBD';
  538. return 3;
  539. }
  540. /* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode
  541. UTF-8 otherwise return 0 */
  542. int
  543. isfullutf8(char *s, int b) {
  544. uchar *c1, *c2, *c3;
  545. c1 = (uchar *)s;
  546. c2 = (uchar *)++s;
  547. c3 = (uchar *)++s;
  548. if(b < 1) {
  549. return 0;
  550. } else if((*c1 & 0xE0) == 0xC0 && b == 1) {
  551. return 0;
  552. } else if((*c1 & 0xF0) == 0xE0 &&
  553. ((b == 1) ||
  554. ((b == 2) && (*c2 & 0xC0) == 0x80))) {
  555. return 0;
  556. } else if((*c1 & 0xF8) == 0xF0 &&
  557. ((b == 1) ||
  558. ((b == 2) && (*c2 & 0xC0) == 0x80) ||
  559. ((b == 3) && (*c2 & 0xC0) == 0x80 && (*c3 & 0xC0) == 0x80))) {
  560. return 0;
  561. } else {
  562. return 1;
  563. }
  564. }
  565. int
  566. utf8size(char *s) {
  567. uchar c = *s;
  568. if(~c & 0x80) {
  569. return 1;
  570. } else if((c & 0xE0) == 0xC0) {
  571. return 2;
  572. } else if((c & 0xF0) == 0xE0) {
  573. return 3;
  574. } else {
  575. return 4;
  576. }
  577. }
  578. static void
  579. selinit(void) {
  580. memset(&sel.tclick1, 0, sizeof(sel.tclick1));
  581. memset(&sel.tclick2, 0, sizeof(sel.tclick2));
  582. sel.mode = 0;
  583. sel.ob.x = -1;
  584. sel.clip = NULL;
  585. sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
  586. if(sel.xtarget == None)
  587. sel.xtarget = XA_STRING;
  588. }
  589. static int
  590. x2col(int x) {
  591. x -= borderpx;
  592. x /= xw.cw;
  593. return LIMIT(x, 0, term.col-1);
  594. }
  595. static int
  596. y2row(int y) {
  597. y -= borderpx;
  598. y /= xw.ch;
  599. return LIMIT(y, 0, term.row-1);
  600. }
  601. static void
  602. selsort(void) {
  603. if(sel.ob.y == sel.oe.y) {
  604. sel.nb.x = MIN(sel.ob.x, sel.oe.x);
  605. sel.ne.x = MAX(sel.ob.x, sel.oe.x);
  606. } else {
  607. sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
  608. sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
  609. }
  610. sel.nb.y = MIN(sel.ob.y, sel.oe.y);
  611. sel.ne.y = MAX(sel.ob.y, sel.oe.y);
  612. }
  613. static inline bool
  614. selected(int x, int y) {
  615. if(sel.ne.y == y && sel.nb.y == y)
  616. return BETWEEN(x, sel.nb.x, sel.ne.x);
  617. if(sel.type == SEL_RECTANGULAR) {
  618. return ((sel.nb.y <= y && y <= sel.ne.y)
  619. && (sel.nb.x <= x && x <= sel.ne.x));
  620. }
  621. return ((sel.nb.y < y && y < sel.ne.y)
  622. || (y == sel.ne.y && x <= sel.ne.x))
  623. || (y == sel.nb.y && x >= sel.nb.x
  624. && (x <= sel.ne.x || sel.nb.y != sel.ne.y));
  625. }
  626. void
  627. selsnap(int mode, int *x, int *y, int direction) {
  628. int i;
  629. switch(mode) {
  630. case SNAP_WORD:
  631. /*
  632. * Snap around if the word wraps around at the end or
  633. * beginning of a line.
  634. */
  635. for(;;) {
  636. if(direction < 0 && *x <= 0) {
  637. if(*y > 0 && term.line[*y - 1][term.col-1].mode
  638. & ATTR_WRAP) {
  639. *y -= 1;
  640. *x = term.col-1;
  641. } else {
  642. break;
  643. }
  644. }
  645. if(direction > 0 && *x >= term.col-1) {
  646. if(*y < term.row-1 && term.line[*y][*x].mode
  647. & ATTR_WRAP) {
  648. *y += 1;
  649. *x = 0;
  650. } else {
  651. break;
  652. }
  653. }
  654. if(term.line[*y][*x+direction].mode & ATTR_WDUMMY) {
  655. *x += direction;
  656. continue;
  657. }
  658. if(strchr(worddelimiters,
  659. term.line[*y][*x+direction].c[0])) {
  660. break;
  661. }
  662. *x += direction;
  663. }
  664. break;
  665. case SNAP_LINE:
  666. /*
  667. * Snap around if the the previous line or the current one
  668. * has set ATTR_WRAP at its end. Then the whole next or
  669. * previous line will be selected.
  670. */
  671. *x = (direction < 0) ? 0 : term.col - 1;
  672. if(direction < 0 && *y > 0) {
  673. for(; *y > 0; *y += direction) {
  674. if(!(term.line[*y-1][term.col-1].mode
  675. & ATTR_WRAP)) {
  676. break;
  677. }
  678. }
  679. } else if(direction > 0 && *y < term.row-1) {
  680. for(; *y < term.row; *y += direction) {
  681. if(!(term.line[*y][term.col-1].mode
  682. & ATTR_WRAP)) {
  683. break;
  684. }
  685. }
  686. }
  687. break;
  688. default:
  689. /*
  690. * Select the whole line when the end of line is reached.
  691. */
  692. if(direction > 0) {
  693. i = term.col;
  694. while(--i > 0 && term.line[*y][i].c[0] == ' ')
  695. /* nothing */;
  696. if(i > 0 && i < *x)
  697. *x = term.col - 1;
  698. }
  699. break;
  700. }
  701. }
  702. void
  703. getbuttoninfo(XEvent *e) {
  704. int type;
  705. uint state = e->xbutton.state &~Button1Mask;
  706. sel.alt = IS_SET(MODE_ALTSCREEN);
  707. sel.oe.x = x2col(e->xbutton.x);
  708. sel.oe.y = y2row(e->xbutton.y);
  709. if(sel.ob.y < sel.oe.y
  710. || (sel.ob.y == sel.oe.y && sel.ob.x < sel.oe.x)) {
  711. selsnap(sel.snap, &sel.ob.x, &sel.ob.y, -1);
  712. selsnap(sel.snap, &sel.oe.x, &sel.oe.y, +1);
  713. } else {
  714. selsnap(sel.snap, &sel.oe.x, &sel.oe.y, -1);
  715. selsnap(sel.snap, &sel.ob.x, &sel.ob.y, +1);
  716. }
  717. selsort();
  718. sel.type = SEL_REGULAR;
  719. for(type = 1; type < LEN(selmasks); ++type) {
  720. if(match(selmasks[type], state)) {
  721. sel.type = type;
  722. break;
  723. }
  724. }
  725. }
  726. void
  727. mousereport(XEvent *e) {
  728. int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
  729. button = e->xbutton.button, state = e->xbutton.state,
  730. len;
  731. char buf[40];
  732. static int ox, oy;
  733. /* from urxvt */
  734. if(e->xbutton.type == MotionNotify) {
  735. if(x == ox && y == oy)
  736. return;
  737. if(!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
  738. return;
  739. /* MOUSE_MOTION: no reporting if no button is pressed */
  740. if(IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
  741. return;
  742. button = oldbutton + 32;
  743. ox = x;
  744. oy = y;
  745. } else {
  746. if(!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
  747. button = 3;
  748. } else {
  749. button -= Button1;
  750. if(button >= 3)
  751. button += 64 - 3;
  752. }
  753. if(e->xbutton.type == ButtonPress) {
  754. oldbutton = button;
  755. ox = x;
  756. oy = y;
  757. } else if(e->xbutton.type == ButtonRelease) {
  758. oldbutton = 3;
  759. /* MODE_MOUSEX10: no button release reporting */
  760. if(IS_SET(MODE_MOUSEX10))
  761. return;
  762. }
  763. }
  764. if(!IS_SET(MODE_MOUSEX10)) {
  765. button += (state & ShiftMask ? 4 : 0)
  766. + (state & Mod4Mask ? 8 : 0)
  767. + (state & ControlMask ? 16 : 0);
  768. }
  769. len = 0;
  770. if(IS_SET(MODE_MOUSESGR)) {
  771. len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
  772. button, x+1, y+1,
  773. e->xbutton.type == ButtonRelease ? 'm' : 'M');
  774. } else if(x < 223 && y < 223) {
  775. len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
  776. 32+button, 32+x+1, 32+y+1);
  777. } else {
  778. return;
  779. }
  780. ttywrite(buf, len);
  781. }
  782. void
  783. bpress(XEvent *e) {
  784. struct timeval now;
  785. Mousekey *mk;
  786. if(IS_SET(MODE_MOUSE)) {
  787. mousereport(e);
  788. return;
  789. }
  790. for(mk = mshortcuts; mk < mshortcuts + LEN(mshortcuts); mk++) {
  791. if(e->xbutton.button == mk->b
  792. && match(mk->mask, e->xbutton.state)) {
  793. ttywrite(mk->s, strlen(mk->s));
  794. if(IS_SET(MODE_ECHO))
  795. techo(mk->s, strlen(mk->s));
  796. return;
  797. }
  798. }
  799. if(e->xbutton.button == Button1) {
  800. gettimeofday(&now, NULL);
  801. /* Clear previous selection, logically and visually. */
  802. selclear(NULL);
  803. sel.mode = 1;
  804. sel.type = SEL_REGULAR;
  805. sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
  806. sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
  807. /*
  808. * If the user clicks below predefined timeouts specific
  809. * snapping behaviour is exposed.
  810. */
  811. if(TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
  812. sel.snap = SNAP_LINE;
  813. } else if(TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
  814. sel.snap = SNAP_WORD;
  815. } else {
  816. sel.snap = 0;
  817. }
  818. selsnap(sel.snap, &sel.ob.x, &sel.ob.y, -1);
  819. selsnap(sel.snap, &sel.oe.x, &sel.oe.y, +1);
  820. selsort();
  821. /*
  822. * Draw selection, unless it's regular and we don't want to
  823. * make clicks visible
  824. */
  825. if(sel.snap != 0) {
  826. sel.mode++;
  827. tsetdirt(sel.nb.y, sel.ne.y);
  828. }
  829. sel.tclick2 = sel.tclick1;
  830. sel.tclick1 = now;
  831. }
  832. }
  833. void
  834. selcopy(void) {
  835. char *str, *ptr;
  836. int x, y, bufsize, size, i, ex;
  837. Glyph *gp, *last;
  838. if(sel.ob.x == -1) {
  839. str = NULL;
  840. } else {
  841. bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
  842. ptr = str = xmalloc(bufsize);
  843. /* append every set & selected glyph to the selection */
  844. for(y = sel.nb.y; y < sel.ne.y + 1; y++) {
  845. gp = &term.line[y][0];
  846. last = gp + term.col;
  847. while(--last >= gp && !(selected(last - gp, y) && \
  848. strcmp(last->c, " ") != 0))
  849. /* nothing */;
  850. for(x = 0; gp <= last; x++, ++gp) {
  851. if(!selected(x, y) || (gp->mode & ATTR_WDUMMY))
  852. continue;
  853. size = utf8size(gp->c);
  854. memcpy(ptr, gp->c, size);
  855. ptr += size;
  856. }
  857. /*
  858. * Copy and pasting of line endings is inconsistent
  859. * in the inconsistent terminal and GUI world.
  860. * The best solution seems like to produce '\n' when
  861. * something is copied from st and convert '\n' to
  862. * '\r', when something to be pasted is received by
  863. * st.
  864. * FIXME: Fix the computer world.
  865. */
  866. if(y < sel.ne.y && x > 0 && !((gp-1)->mode & ATTR_WRAP))
  867. *ptr++ = '\n';
  868. /*
  869. * If the last selected line expands in the selection
  870. * after the visible text '\n' is appended.
  871. */
  872. if(y == sel.ne.y) {
  873. i = term.col;
  874. while(--i > 0 && term.line[y][i].c[0] == ' ')
  875. /* nothing */;
  876. ex = sel.ne.x;
  877. if(sel.nb.y == sel.ne.y && sel.ne.x < sel.nb.x)
  878. ex = sel.nb.x;
  879. if(i < ex)
  880. *ptr++ = '\n';
  881. }
  882. }
  883. *ptr = 0;
  884. }
  885. xsetsel(str);
  886. }
  887. void
  888. selnotify(XEvent *e) {
  889. ulong nitems, ofs, rem;
  890. int format;
  891. uchar *data, *last, *repl;
  892. Atom type;
  893. ofs = 0;
  894. do {
  895. if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
  896. False, AnyPropertyType, &type, &format,
  897. &nitems, &rem, &data)) {
  898. fprintf(stderr, "Clipboard allocation failed\n");
  899. return;
  900. }
  901. /*
  902. * As seen in selcopy:
  903. * Line endings are inconsistent in the terminal and GUI world
  904. * copy and pasting. When receiving some selection data,
  905. * replace all '\n' with '\r'.
  906. * FIXME: Fix the computer world.
  907. */
  908. repl = data;
  909. last = data + nitems * format / 8;
  910. while((repl = memchr(repl, '\n', last - repl))) {
  911. *repl++ = '\r';
  912. }
  913. if(IS_SET(MODE_BRCKTPASTE))
  914. ttywrite("\033[200~", 6);
  915. ttywrite((const char *)data, nitems * format / 8);
  916. if(IS_SET(MODE_BRCKTPASTE))
  917. ttywrite("\033[201~", 6);
  918. XFree(data);
  919. /* number of 32-bit chunks returned */
  920. ofs += nitems * format / 32;
  921. } while(rem > 0);
  922. }
  923. void
  924. selpaste(const Arg *dummy) {
  925. XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
  926. xw.win, CurrentTime);
  927. }
  928. void
  929. clippaste(const Arg *dummy) {
  930. Atom clipboard;
  931. clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
  932. XConvertSelection(xw.dpy, clipboard, sel.xtarget, XA_PRIMARY,
  933. xw.win, CurrentTime);
  934. }
  935. void
  936. selclear(XEvent *e) {
  937. if(sel.ob.x == -1)
  938. return;
  939. sel.ob.x = -1;
  940. tsetdirt(sel.nb.y, sel.ne.y);
  941. }
  942. void
  943. selrequest(XEvent *e) {
  944. XSelectionRequestEvent *xsre;
  945. XSelectionEvent xev;
  946. Atom xa_targets, string;
  947. xsre = (XSelectionRequestEvent *) e;
  948. xev.type = SelectionNotify;
  949. xev.requestor = xsre->requestor;
  950. xev.selection = xsre->selection;
  951. xev.target = xsre->target;
  952. xev.time = xsre->time;
  953. /* reject */
  954. xev.property = None;
  955. xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
  956. if(xsre->target == xa_targets) {
  957. /* respond with the supported type */
  958. string = sel.xtarget;
  959. XChangeProperty(xsre->display, xsre->requestor, xsre->property,
  960. XA_ATOM, 32, PropModeReplace,
  961. (uchar *) &string, 1);
  962. xev.property = xsre->property;
  963. } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
  964. XChangeProperty(xsre->display, xsre->requestor, xsre->property,
  965. xsre->target, 8, PropModeReplace,
  966. (uchar *) sel.clip, strlen(sel.clip));
  967. xev.property = xsre->property;
  968. }
  969. /* all done, send a notification to the listener */
  970. if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
  971. fprintf(stderr, "Error sending SelectionNotify event\n");
  972. }
  973. void
  974. xsetsel(char *str) {
  975. /* register the selection for both the clipboard and the primary */
  976. Atom clipboard;
  977. free(sel.clip);
  978. sel.clip = str;
  979. XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
  980. clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
  981. XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
  982. }
  983. void
  984. brelease(XEvent *e) {
  985. if(IS_SET(MODE_MOUSE)) {
  986. mousereport(e);
  987. return;
  988. }
  989. if(e->xbutton.button == Button2) {
  990. selpaste(NULL);
  991. } else if(e->xbutton.button == Button1) {
  992. if(sel.mode < 2) {
  993. selclear(NULL);
  994. } else {
  995. getbuttoninfo(e);
  996. selcopy();
  997. }
  998. sel.mode = 0;
  999. tsetdirt(sel.nb.y, sel.ne.y);
  1000. }
  1001. }
  1002. void
  1003. bmotion(XEvent *e) {
  1004. int oldey, oldex, oldsby, oldsey;
  1005. if(IS_SET(MODE_MOUSE)) {
  1006. mousereport(e);
  1007. return;
  1008. }
  1009. if(!sel.mode)
  1010. return;
  1011. sel.mode++;
  1012. oldey = sel.oe.y;
  1013. oldex = sel.oe.x;
  1014. oldsby = sel.nb.y;
  1015. oldsey = sel.ne.y;
  1016. getbuttoninfo(e);
  1017. if(oldey != sel.oe.y || oldex != sel.oe.x)
  1018. tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
  1019. }
  1020. void
  1021. die(const char *errstr, ...) {
  1022. va_list ap;
  1023. va_start(ap, errstr);
  1024. vfprintf(stderr, errstr, ap);
  1025. va_end(ap);
  1026. exit(EXIT_FAILURE);
  1027. }
  1028. void
  1029. execsh(void) {
  1030. char **args;
  1031. char *envshell = getenv("SHELL");
  1032. const struct passwd *pass = getpwuid(getuid());
  1033. char buf[sizeof(long) * 8 + 1];
  1034. unsetenv("COLUMNS");
  1035. unsetenv("LINES");
  1036. unsetenv("TERMCAP");
  1037. if(pass) {
  1038. setenv("LOGNAME", pass->pw_name, 1);
  1039. setenv("USER", pass->pw_name, 1);
  1040. setenv("SHELL", pass->pw_shell, 0);
  1041. setenv("HOME", pass->pw_dir, 0);
  1042. }
  1043. snprintf(buf, sizeof(buf), "%lu", xw.win);
  1044. setenv("WINDOWID", buf, 1);
  1045. signal(SIGCHLD, SIG_DFL);
  1046. signal(SIGHUP, SIG_DFL);
  1047. signal(SIGINT, SIG_DFL);
  1048. signal(SIGQUIT, SIG_DFL);
  1049. signal(SIGTERM, SIG_DFL);
  1050. signal(SIGALRM, SIG_DFL);
  1051. DEFAULT(envshell, shell);
  1052. setenv("TERM", termname, 1);
  1053. args = opt_cmd ? opt_cmd : (char *[]){envshell, "-i", NULL};
  1054. execvp(args[0], args);
  1055. exit(EXIT_FAILURE);
  1056. }
  1057. void
  1058. sigchld(int a) {
  1059. int stat = 0;
  1060. if(waitpid(pid, &stat, 0) < 0)
  1061. die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
  1062. if(WIFEXITED(stat)) {
  1063. exit(WEXITSTATUS(stat));
  1064. } else {
  1065. exit(EXIT_FAILURE);
  1066. }
  1067. }
  1068. void
  1069. ttynew(void) {
  1070. int m, s;
  1071. struct winsize w = {term.row, term.col, 0, 0};
  1072. /* seems to work fine on linux, openbsd and freebsd */
  1073. if(openpty(&m, &s, NULL, NULL, &w) < 0)
  1074. die("openpty failed: %s\n", SERRNO);
  1075. switch(pid = fork()) {
  1076. case -1:
  1077. die("fork failed\n");
  1078. break;
  1079. case 0:
  1080. setsid(); /* create a new process group */
  1081. dup2(s, STDIN_FILENO);
  1082. dup2(s, STDOUT_FILENO);
  1083. dup2(s, STDERR_FILENO);
  1084. if(ioctl(s, TIOCSCTTY, NULL) < 0)
  1085. die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
  1086. close(s);
  1087. close(m);
  1088. execsh();
  1089. break;
  1090. default:
  1091. close(s);
  1092. cmdfd = m;
  1093. signal(SIGCHLD, sigchld);
  1094. if(opt_io) {
  1095. iofd = (!strcmp(opt_io, "-")) ?
  1096. STDOUT_FILENO :
  1097. open(opt_io, O_WRONLY | O_CREAT, 0666);
  1098. if(iofd < 0) {
  1099. fprintf(stderr, "Error opening %s:%s\n",
  1100. opt_io, strerror(errno));
  1101. }
  1102. }
  1103. }
  1104. }
  1105. void
  1106. dump(char c) {
  1107. static int col;
  1108. fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
  1109. if(++col % 10 == 0)
  1110. fprintf(stderr, "\n");
  1111. }
  1112. void
  1113. ttyread(void) {
  1114. static char buf[BUFSIZ];
  1115. static int buflen = 0;
  1116. char *ptr;
  1117. char s[UTF_SIZ];
  1118. int charsize; /* size of utf8 char in bytes */
  1119. long utf8c;
  1120. int ret;
  1121. /* append read bytes to unprocessed bytes */
  1122. if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
  1123. die("Couldn't read from shell: %s\n", SERRNO);
  1124. /* process every complete utf8 char */
  1125. buflen += ret;
  1126. ptr = buf;
  1127. while(buflen >= UTF_SIZ || isfullutf8(ptr,buflen)) {
  1128. charsize = utf8decode(ptr, &utf8c);
  1129. utf8encode(&utf8c, s);
  1130. tputc(s, charsize);
  1131. ptr += charsize;
  1132. buflen -= charsize;
  1133. }
  1134. /* keep any uncomplete utf8 char for the next call */
  1135. memmove(buf, ptr, buflen);
  1136. }
  1137. void
  1138. ttywrite(const char *s, size_t n) {
  1139. if(write(cmdfd, s, n) == -1)
  1140. die("write error on tty: %s\n", SERRNO);
  1141. }
  1142. void
  1143. ttyresize(void) {
  1144. struct winsize w;
  1145. w.ws_row = term.row;
  1146. w.ws_col = term.col;
  1147. w.ws_xpixel = xw.tw;
  1148. w.ws_ypixel = xw.th;
  1149. if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
  1150. fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
  1151. }
  1152. int
  1153. tattrset(int attr) {
  1154. int i, j;
  1155. for(i = 0; i < term.row-1; i++) {
  1156. for(j = 0; j < term.col-1; j++) {
  1157. if(term.line[i][j].mode & attr)
  1158. return 1;
  1159. }
  1160. }
  1161. return 0;
  1162. }
  1163. void
  1164. tsetdirt(int top, int bot) {
  1165. int i;
  1166. LIMIT(top, 0, term.row-1);
  1167. LIMIT(bot, 0, term.row-1);
  1168. for(i = top; i <= bot; i++)
  1169. term.dirty[i] = 1;
  1170. }
  1171. void
  1172. tsetdirtattr(int attr) {
  1173. int i, j;
  1174. for(i = 0; i < term.row-1; i++) {
  1175. for(j = 0; j < term.col-1; j++) {
  1176. if(term.line[i][j].mode & attr) {
  1177. tsetdirt(i, i);
  1178. break;
  1179. }
  1180. }
  1181. }
  1182. }
  1183. void
  1184. tfulldirt(void) {
  1185. tsetdirt(0, term.row-1);
  1186. }
  1187. void
  1188. tcursor(int mode) {
  1189. static TCursor c[2];
  1190. bool alt = IS_SET(MODE_ALTSCREEN);
  1191. if(mode == CURSOR_SAVE) {
  1192. c[alt] = term.c;
  1193. } else if(mode == CURSOR_LOAD) {
  1194. term.c = c[alt];
  1195. tmoveto(c[alt].x, c[alt].y);
  1196. }
  1197. }
  1198. void
  1199. treset(void) {
  1200. uint i;
  1201. term.c = (TCursor){{
  1202. .mode = ATTR_NULL,
  1203. .fg = defaultfg,
  1204. .bg = defaultbg
  1205. }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
  1206. memset(term.tabs, 0, term.col * sizeof(*term.tabs));
  1207. for(i = tabspaces; i < term.col; i += tabspaces)
  1208. term.tabs[i] = 1;
  1209. term.top = 0;
  1210. term.bot = term.row - 1;
  1211. term.mode = MODE_WRAP;
  1212. memset(term.trantbl, sizeof(term.trantbl), CS_USA);
  1213. term.charset = 0;
  1214. tclearregion(0, 0, term.col-1, term.row-1);
  1215. tmoveto(0, 0);
  1216. tcursor(CURSOR_SAVE);
  1217. }
  1218. void
  1219. tnew(int col, int row) {
  1220. term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
  1221. tresize(col, row);
  1222. term.numlock = 1;
  1223. treset();
  1224. }
  1225. void
  1226. tswapscreen(void) {
  1227. Line *tmp = term.line;
  1228. term.line = term.alt;
  1229. term.alt = tmp;
  1230. term.mode ^= MODE_ALTSCREEN;
  1231. tfulldirt();
  1232. }
  1233. void
  1234. tscrolldown(int orig, int n) {
  1235. int i;
  1236. Line temp;
  1237. LIMIT(n, 0, term.bot-orig+1);
  1238. tclearregion(0, term.bot-n+1, term.col-1, term.bot);
  1239. for(i = term.bot; i >= orig+n; i--) {
  1240. temp = term.line[i];
  1241. term.line[i] = term.line[i-n];
  1242. term.line[i-n] = temp;
  1243. term.dirty[i] = 1;
  1244. term.dirty[i-n] = 1;
  1245. }
  1246. selscroll(orig, n);
  1247. }
  1248. void
  1249. tscrollup(int orig, int n) {
  1250. int i;
  1251. Line temp;
  1252. LIMIT(n, 0, term.bot-orig+1);
  1253. tclearregion(0, orig, term.col-1, orig+n-1);
  1254. for(i = orig; i <= term.bot-n; i++) {
  1255. temp = term.line[i];
  1256. term.line[i] = term.line[i+n];
  1257. term.line[i+n] = temp;
  1258. term.dirty[i] = 1;
  1259. term.dirty[i+n] = 1;
  1260. }
  1261. selscroll(orig, -n);
  1262. }
  1263. void
  1264. selscroll(int orig, int n) {
  1265. if(sel.ob.x == -1)
  1266. return;
  1267. if(BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
  1268. if((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
  1269. selclear(NULL);
  1270. return;
  1271. }
  1272. if(sel.type == SEL_RECTANGULAR) {
  1273. if(sel.ob.y < term.top)
  1274. sel.ob.y = term.top;
  1275. if(sel.oe.y > term.bot)
  1276. sel.oe.y = term.bot;
  1277. } else {
  1278. if(sel.ob.y < term.top) {
  1279. sel.ob.y = term.top;
  1280. sel.ob.x = 0;
  1281. }
  1282. if(sel.oe.y > term.bot) {
  1283. sel.oe.y = term.bot;
  1284. sel.oe.x = term.col;
  1285. }
  1286. }
  1287. selsort();
  1288. }
  1289. }
  1290. void
  1291. tnewline(int first_col) {
  1292. int y = term.c.y;
  1293. if(y == term.bot) {
  1294. tscrollup(term.top, 1);
  1295. } else {
  1296. y++;
  1297. }
  1298. tmoveto(first_col ? 0 : term.c.x, y);
  1299. }
  1300. void
  1301. csiparse(void) {
  1302. char *p = csiescseq.buf, *np;
  1303. long int v;
  1304. csiescseq.narg = 0;
  1305. if(*p == '?') {
  1306. csiescseq.priv = 1;
  1307. p++;
  1308. }
  1309. csiescseq.buf[csiescseq.len] = '\0';
  1310. while(p < csiescseq.buf+csiescseq.len) {
  1311. np = NULL;
  1312. v = strtol(p, &np, 10);
  1313. if(np == p)
  1314. v = 0;
  1315. if(v == LONG_MAX || v == LONG_MIN)
  1316. v = -1;
  1317. csiescseq.arg[csiescseq.narg++] = v;
  1318. p = np;
  1319. if(*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
  1320. break;
  1321. p++;
  1322. }
  1323. csiescseq.mode = *p;
  1324. }
  1325. /* for absolute user moves, when decom is set */
  1326. void
  1327. tmoveato(int x, int y) {
  1328. tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
  1329. }
  1330. void
  1331. tmoveto(int x, int y) {
  1332. int miny, maxy;
  1333. if(term.c.state & CURSOR_ORIGIN) {
  1334. miny = term.top;
  1335. maxy = term.bot;
  1336. } else {
  1337. miny = 0;
  1338. maxy = term.row - 1;
  1339. }
  1340. LIMIT(x, 0, term.col-1);
  1341. LIMIT(y, miny, maxy);
  1342. term.c.state &= ~CURSOR_WRAPNEXT;
  1343. term.c.x = x;
  1344. term.c.y = y;
  1345. }
  1346. void
  1347. tsetchar(char *c, Glyph *attr, int x, int y) {
  1348. static char *vt100_0[62] = { /* 0x41 - 0x7e */
  1349. "", "", "", "", "", "", "", /* A - G */
  1350. 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
  1351. 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
  1352. 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
  1353. "", "", "", "", "", "", "°", "±", /* ` - g */
  1354. "", "", "", "", "", "", "", "", /* h - o */
  1355. "", "", "", "", "", "", "", "", /* p - w */
  1356. "", "", "", "π", "", "£", "·", /* x - ~ */
  1357. };
  1358. /*
  1359. * The table is proudly stolen from rxvt.
  1360. */
  1361. if(attr->mode & ATTR_GFX) {
  1362. if(c[0] >= 0x41 && c[0] <= 0x7e
  1363. && vt100_0[c[0] - 0x41]) {
  1364. c = vt100_0[c[0] - 0x41];
  1365. }
  1366. }
  1367. if(term.line[y][x].mode & ATTR_WIDE) {
  1368. if(x+1 < term.col) {
  1369. term.line[y][x+1].c[0] = ' ';
  1370. term.line[y][x+1].mode &= ~ATTR_WDUMMY;
  1371. }
  1372. } else if(term.line[y][x].mode & ATTR_WDUMMY) {
  1373. term.line[y][x-1].c[0] = ' ';
  1374. term.line[y][x-1].mode &= ~ATTR_WIDE;
  1375. }
  1376. term.dirty[y] = 1;
  1377. term.line[y][x] = *attr;
  1378. memcpy(term.line[y][x].c, c, UTF_SIZ);
  1379. }
  1380. void
  1381. tclearregion(int x1, int y1, int x2, int y2) {
  1382. int x, y, temp;
  1383. if(x1 > x2)
  1384. temp = x1, x1 = x2, x2 = temp;
  1385. if(y1 > y2)
  1386. temp = y1, y1 = y2, y2 = temp;
  1387. LIMIT(x1, 0, term.col-1);
  1388. LIMIT(x2, 0, term.col-1);
  1389. LIMIT(y1, 0, term.row-1);
  1390. LIMIT(y2, 0, term.row-1);
  1391. for(y = y1; y <= y2; y++) {
  1392. term.dirty[y] = 1;
  1393. for(x = x1; x <= x2; x++) {
  1394. if(selected(x, y))
  1395. selclear(NULL);
  1396. term.line[y][x] = term.c.attr;
  1397. memcpy(term.line[y][x].c, " ", 2);
  1398. }
  1399. }
  1400. }
  1401. void
  1402. tdeletechar(int n) {
  1403. int src = term.c.x + n;
  1404. int dst = term.c.x;
  1405. int size = term.col - src;
  1406. term.dirty[term.c.y] = 1;
  1407. if(src >= term.col) {
  1408. tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
  1409. return;
  1410. }
  1411. memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
  1412. size * sizeof(Glyph));
  1413. tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
  1414. }
  1415. void
  1416. tinsertblank(int n) {
  1417. int src = term.c.x;
  1418. int dst = src + n;
  1419. int size = term.col - dst;
  1420. term.dirty[term.c.y] = 1;
  1421. if(dst >= term.col) {
  1422. tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
  1423. return;
  1424. }
  1425. memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
  1426. size * sizeof(Glyph));
  1427. tclearregion(src, term.c.y, dst - 1, term.c.y);
  1428. }
  1429. void
  1430. tinsertblankline(int n) {
  1431. if(term.c.y < term.top || term.c.y > term.bot)
  1432. return;
  1433. tscrolldown(term.c.y, n);
  1434. }
  1435. void
  1436. tdeleteline(int n) {
  1437. if(term.c.y < term.top || term.c.y > term.bot)
  1438. return;
  1439. tscrollup(term.c.y, n);
  1440. }
  1441. long
  1442. tdefcolor(int *attr, int *npar, int l) {
  1443. long idx = -1;
  1444. uint r, g, b;
  1445. switch (attr[*npar + 1]) {
  1446. case 2: /* direct colour in RGB space */
  1447. if (*npar + 4 >= l) {
  1448. fprintf(stderr,
  1449. "erresc(38): Incorrect number of parameters (%d)\n",
  1450. *npar);
  1451. break;
  1452. }
  1453. r = attr[*npar + 2];
  1454. g = attr[*npar + 3];
  1455. b = attr[*npar + 4];
  1456. *npar += 4;
  1457. if(!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255))
  1458. fprintf(stderr, "erresc: bad rgb color (%d,%d,%d)\n",
  1459. r, g, b);
  1460. else
  1461. idx = TRUECOLOR(r, g, b);
  1462. break;
  1463. case 5: /* indexed colour */
  1464. if (*npar + 2 >= l) {
  1465. fprintf(stderr,
  1466. "erresc(38): Incorrect number of parameters (%d)\n",
  1467. *npar);
  1468. break;
  1469. }
  1470. *npar += 2;
  1471. if(!BETWEEN(attr[*npar], 0, 255))
  1472. fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]);
  1473. else
  1474. idx = attr[*npar];
  1475. break;
  1476. case 0: /* implemented defined (only foreground) */
  1477. case 1: /* transparent */
  1478. case 3: /* direct colour in CMY space */
  1479. case 4: /* direct colour in CMYK space */
  1480. default:
  1481. fprintf(stderr,
  1482. "erresc(38): gfx attr %d unknown\n", attr[*npar]);
  1483. }
  1484. return idx;
  1485. }
  1486. void
  1487. tsetattr(int *attr, int l) {
  1488. int i;
  1489. long idx;
  1490. for(i = 0; i < l; i++) {
  1491. switch(attr[i]) {
  1492. case 0:
  1493. term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE \
  1494. | ATTR_BOLD | ATTR_ITALIC \
  1495. | ATTR_BLINK);
  1496. term.c.attr.fg = defaultfg;
  1497. term.c.attr.bg = defaultbg;
  1498. break;
  1499. case 1:
  1500. term.c.attr.mode |= ATTR_BOLD;
  1501. break;
  1502. case 3:
  1503. term.c.attr.mode |= ATTR_ITALIC;
  1504. break;
  1505. case 4:
  1506. term.c.attr.mode |= ATTR_UNDERLINE;
  1507. break;
  1508. case 5: /* slow blink */
  1509. case 6: /* rapid blink */
  1510. term.c.attr.mode |= ATTR_BLINK;
  1511. break;
  1512. case 7:
  1513. term.c.attr.mode |= ATTR_REVERSE;
  1514. break;
  1515. case 21:
  1516. case 22:
  1517. term.c.attr.mode &= ~ATTR_BOLD;
  1518. break;
  1519. case 23:
  1520. term.c.attr.mode &= ~ATTR_ITALIC;
  1521. break;
  1522. case 24:
  1523. term.c.attr.mode &= ~ATTR_UNDERLINE;
  1524. break;
  1525. case 25:
  1526. case 26:
  1527. term.c.attr.mode &= ~ATTR_BLINK;
  1528. break;
  1529. case 27:
  1530. term.c.attr.mode &= ~ATTR_REVERSE;
  1531. break;
  1532. case 38:
  1533. if ((idx = tdefcolor(attr, &i, l)) >= 0)
  1534. term.c.attr.fg = idx;
  1535. break;
  1536. case 39:
  1537. term.c.attr.fg = defaultfg;
  1538. break;
  1539. case 48:
  1540. if ((idx = tdefcolor(attr, &i, l)) >= 0)
  1541. term.c.attr.bg = idx;
  1542. break;
  1543. case 49:
  1544. term.c.attr.bg = defaultbg;
  1545. break;
  1546. default:
  1547. if(BETWEEN(attr[i], 30, 37)) {
  1548. term.c.attr.fg = attr[i] - 30;
  1549. } else if(BETWEEN(attr[i], 40, 47)) {
  1550. term.c.attr.bg = attr[i] - 40;
  1551. } else if(BETWEEN(attr[i], 90, 97)) {
  1552. term.c.attr.fg = attr[i] - 90 + 8;
  1553. } else if(BETWEEN(attr[i], 100, 107)) {
  1554. term.c.attr.bg = attr[i] - 100 + 8;
  1555. } else {
  1556. fprintf(stderr,
  1557. "erresc(default): gfx attr %d unknown\n",
  1558. attr[i]), csidump();
  1559. }
  1560. break;
  1561. }
  1562. }
  1563. }
  1564. void
  1565. tsetscroll(int t, int b) {
  1566. int temp;
  1567. LIMIT(t, 0, term.row-1);
  1568. LIMIT(b, 0, term.row-1);
  1569. if(t > b) {
  1570. temp = t;
  1571. t = b;
  1572. b = temp;
  1573. }
  1574. term.top = t;
  1575. term.bot = b;
  1576. }
  1577. #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
  1578. void
  1579. tsetmode(bool priv, bool set, int *args, int narg) {
  1580. int *lim, mode;
  1581. bool alt;
  1582. for(lim = args + narg; args < lim; ++args) {
  1583. if(priv) {
  1584. switch(*args) {
  1585. break;
  1586. case 1: /* DECCKM -- Cursor key */
  1587. MODBIT(term.mode, set, MODE_APPCURSOR);
  1588. break;
  1589. case 5: /* DECSCNM -- Reverse video */
  1590. mode = term.mode;
  1591. MODBIT(term.mode, set, MODE_REVERSE);
  1592. if(mode != term.mode)
  1593. redraw(REDRAW_TIMEOUT);
  1594. break;
  1595. case 6: /* DECOM -- Origin */
  1596. MODBIT(term.c.state, set, CURSOR_ORIGIN);
  1597. tmoveato(0, 0);
  1598. break;
  1599. case 7: /* DECAWM -- Auto wrap */
  1600. MODBIT(term.mode, set, MODE_WRAP);
  1601. break;
  1602. case 0: /* Error (IGNORED) */
  1603. case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
  1604. case 3: /* DECCOLM -- Column (IGNORED) */
  1605. case 4: /* DECSCLM -- Scroll (IGNORED) */
  1606. case 8: /* DECARM -- Auto repeat (IGNORED) */
  1607. case 18: /* DECPFF -- Printer feed (IGNORED) */
  1608. case 19: /* DECPEX -- Printer extent (IGNORED) */
  1609. case 42: /* DECNRCM -- National characters (IGNORED) */
  1610. case 12: /* att610 -- Start blinking cursor (IGNORED) */
  1611. break;
  1612. case 25: /* DECTCEM -- Text Cursor Enable Mode */
  1613. MODBIT(term.mode, !set, MODE_HIDE);
  1614. break;
  1615. case 9: /* X10 mouse compatibility mode */
  1616. xsetpointermotion(0);
  1617. MODBIT(term.mode, 0, MODE_MOUSE);
  1618. MODBIT(term.mode, set, MODE_MOUSEX10);
  1619. break;
  1620. case 1000: /* 1000: report button press */
  1621. xsetpointermotion(0);
  1622. MODBIT(term.mode, 0, MODE_MOUSE);
  1623. MODBIT(term.mode, set, MODE_MOUSEBTN);
  1624. break;
  1625. case 1002: /* 1002: report motion on button press */
  1626. xsetpointermotion(0);
  1627. MODBIT(term.mode, 0, MODE_MOUSE);
  1628. MODBIT(term.mode, set, MODE_MOUSEMOTION);
  1629. break;
  1630. case 1003: /* 1003: enable all mouse motions */
  1631. xsetpointermotion(set);
  1632. MODBIT(term.mode, 0, MODE_MOUSE);
  1633. MODBIT(term.mode, set, MODE_MOUSEMANY);
  1634. break;
  1635. case 1004: /* 1004: send focus events to tty */
  1636. MODBIT(term.mode, set, MODE_FOCUS);
  1637. break;
  1638. case 1006: /* 1006: extended reporting mode */
  1639. MODBIT(term.mode, set, MODE_MOUSESGR);
  1640. break;
  1641. case 1034:
  1642. MODBIT(term.mode, set, MODE_8BIT);
  1643. break;
  1644. case 1049: /* swap screen & set/restore cursor as xterm */
  1645. tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
  1646. case 47: /* swap screen */
  1647. case 1047:
  1648. if (!allowaltscreen)
  1649. break;
  1650. alt = IS_SET(MODE_ALTSCREEN);
  1651. if(alt) {
  1652. tclearregion(0, 0, term.col-1,
  1653. term.row-1);
  1654. }
  1655. if(set ^ alt) /* set is always 1 or 0 */
  1656. tswapscreen();
  1657. if(*args != 1049)
  1658. break;
  1659. /* FALLTRU */
  1660. case 1048:
  1661. tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
  1662. break;
  1663. case 2004: /* 2004: bracketed paste mode */
  1664. MODBIT(term.mode, set, MODE_BRCKTPASTE);
  1665. break;
  1666. /* Not implemented mouse modes. See comments there. */
  1667. case 1001: /* mouse highlight mode; can hang the
  1668. terminal by design when implemented. */
  1669. case 1005: /* UTF-8 mouse mode; will confuse
  1670. applications not supporting UTF-8
  1671. and luit. */
  1672. case 1015: /* urxvt mangled mouse mode; incompatible
  1673. and can be mistaken for other control
  1674. codes. */
  1675. default:
  1676. fprintf(stderr,
  1677. "erresc: unknown private set/reset mode %d\n",
  1678. *args);
  1679. break;
  1680. }
  1681. } else {
  1682. switch(*args) {
  1683. case 0: /* Error (IGNORED) */
  1684. break;
  1685. case 2: /* KAM -- keyboard action */
  1686. MODBIT(term.mode, set, MODE_KBDLOCK);
  1687. break;
  1688. case 4: /* IRM -- Insertion-replacement */
  1689. MODBIT(term.mode, set, MODE_INSERT);
  1690. break;
  1691. case 12: /* SRM -- Send/Receive */
  1692. MODBIT(term.mode, !set, MODE_ECHO);
  1693. break;
  1694. case 20: /* LNM -- Linefeed/new line */
  1695. MODBIT(term.mode, set, MODE_CRLF);
  1696. break;
  1697. default:
  1698. fprintf(stderr,
  1699. "erresc: unknown set/reset mode %d\n",
  1700. *args);
  1701. break;
  1702. }
  1703. }
  1704. }
  1705. }
  1706. void
  1707. csihandle(void) {
  1708. char buf[40];
  1709. int len;
  1710. switch(csiescseq.mode) {
  1711. default:
  1712. unknown:
  1713. fprintf(stderr, "erresc: unknown csi ");
  1714. csidump();
  1715. /* die(""); */
  1716. break;
  1717. case '@': /* ICH -- Insert <n> blank char */
  1718. DEFAULT(csiescseq.arg[0], 1);
  1719. tinsertblank(csiescseq.arg[0]);
  1720. break;
  1721. case 'A': /* CUU -- Cursor <n> Up */
  1722. DEFAULT(csiescseq.arg[0], 1);
  1723. tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
  1724. break;
  1725. case 'B': /* CUD -- Cursor <n> Down */
  1726. case 'e': /* VPR --Cursor <n> Down */
  1727. DEFAULT(csiescseq.arg[0], 1);
  1728. tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
  1729. break;
  1730. case 'c': /* DA -- Device Attributes */
  1731. if(csiescseq.arg[0] == 0)
  1732. ttywrite(VT102ID, sizeof(VT102ID) - 1);
  1733. break;
  1734. case 'C': /* CUF -- Cursor <n> Forward */
  1735. case 'a': /* HPR -- Cursor <n> Forward */
  1736. DEFAULT(csiescseq.arg[0], 1);
  1737. tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
  1738. break;
  1739. case 'D': /* CUB -- Cursor <n> Backward */
  1740. DEFAULT(csiescseq.arg[0], 1);
  1741. tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
  1742. break;
  1743. case 'E': /* CNL -- Cursor <n> Down and first col */
  1744. DEFAULT(csiescseq.arg[0], 1);
  1745. tmoveto(0, term.c.y+csiescseq.arg[0]);
  1746. break;
  1747. case 'F': /* CPL -- Cursor <n> Up and first col */
  1748. DEFAULT(csiescseq.arg[0], 1);
  1749. tmoveto(0, term.c.y-csiescseq.arg[0]);
  1750. break;
  1751. case 'g': /* TBC -- Tabulation clear */
  1752. switch(csiescseq.arg[0]) {
  1753. case 0: /* clear current tab stop */
  1754. term.tabs[term.c.x] = 0;
  1755. break;
  1756. case 3: /* clear all the tabs */
  1757. memset(term.tabs, 0, term.col * sizeof(*term.tabs));
  1758. break;
  1759. default:
  1760. goto unknown;
  1761. }
  1762. break;
  1763. case 'G': /* CHA -- Move to <col> */
  1764. case '`': /* HPA */
  1765. DEFAULT(csiescseq.arg[0], 1);
  1766. tmoveto(csiescseq.arg[0]-1, term.c.y);
  1767. break;
  1768. case 'H': /* CUP -- Move to <row> <col> */
  1769. case 'f': /* HVP */
  1770. DEFAULT(csiescseq.arg[0], 1);
  1771. DEFAULT(csiescseq.arg[1], 1);
  1772. tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
  1773. break;
  1774. case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
  1775. DEFAULT(csiescseq.arg[0], 1);
  1776. while(csiescseq.arg[0]--)
  1777. tputtab(1);
  1778. break;
  1779. case 'J': /* ED -- Clear screen */
  1780. selclear(NULL);
  1781. switch(csiescseq.arg[0]) {
  1782. case 0: /* below */
  1783. tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
  1784. if(term.c.y < term.row-1) {
  1785. tclearregion(0, term.c.y+1, term.col-1,
  1786. term.row-1);
  1787. }
  1788. break;
  1789. case 1: /* above */
  1790. if(term.c.y > 1)
  1791. tclearregion(0, 0, term.col-1, term.c.y-1);
  1792. tclearregion(0, term.c.y, term.c.x, term.c.y);
  1793. break;
  1794. case 2: /* all */
  1795. tclearregion(0, 0, term.col-1, term.row-1);
  1796. break;
  1797. default:
  1798. goto unknown;
  1799. }
  1800. break;
  1801. case 'K': /* EL -- Clear line */
  1802. switch(csiescseq.arg[0]) {
  1803. case 0: /* right */
  1804. tclearregion(term.c.x, term.c.y, term.col-1,
  1805. term.c.y);
  1806. break;
  1807. case 1: /* left */
  1808. tclearregion(0, term.c.y, term.c.x, term.c.y);
  1809. break;
  1810. case 2: /* all */
  1811. tclearregion(0, term.c.y, term.col-1, term.c.y);
  1812. break;
  1813. }
  1814. break;
  1815. case 'S': /* SU -- Scroll <n> line up */
  1816. DEFAULT(csiescseq.arg[0], 1);
  1817. tscrollup(term.top, csiescseq.arg[0]);
  1818. break;
  1819. case 'T': /* SD -- Scroll <n> line down */
  1820. DEFAULT(csiescseq.arg[0], 1);
  1821. tscrolldown(term.top, csiescseq.arg[0]);
  1822. break;
  1823. case 'L': /* IL -- Insert <n> blank lines */
  1824. DEFAULT(csiescseq.arg[0], 1);
  1825. tinsertblankline(csiescseq.arg[0]);
  1826. break;
  1827. case 'l': /* RM -- Reset Mode */
  1828. tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
  1829. break;
  1830. case 'M': /* DL -- Delete <n> lines */
  1831. DEFAULT(csiescseq.arg[0], 1);
  1832. tdeleteline(csiescseq.arg[0]);
  1833. break;
  1834. case 'X': /* ECH -- Erase <n> char */
  1835. DEFAULT(csiescseq.arg[0], 1);
  1836. tclearregion(term.c.x, term.c.y,
  1837. term.c.x + csiescseq.arg[0] - 1, term.c.y);
  1838. break;
  1839. case 'P': /* DCH -- Delete <n> char */
  1840. DEFAULT(csiescseq.arg[0], 1);
  1841. tdeletechar(csiescseq.arg[0]);
  1842. break;
  1843. case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
  1844. DEFAULT(csiescseq.arg[0], 1);
  1845. while(csiescseq.arg[0]--)
  1846. tputtab(0);
  1847. break;
  1848. case 'd': /* VPA -- Move to <row> */
  1849. DEFAULT(csiescseq.arg[0], 1);
  1850. tmoveato(term.c.x, csiescseq.arg[0]-1);
  1851. break;
  1852. case 'h': /* SM -- Set terminal mode */
  1853. tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
  1854. break;
  1855. case 'm': /* SGR -- Terminal attribute (color) */
  1856. tsetattr(csiescseq.arg, csiescseq.narg);
  1857. break;
  1858. case 'n': /* DSR – Device Status Report (cursor position) */
  1859. if (csiescseq.arg[0] == 6) {
  1860. len = snprintf(buf, sizeof(buf),"\033[%i;%iR",
  1861. term.c.y+1, term.c.x+1);
  1862. ttywrite(buf, len);
  1863. break;
  1864. }
  1865. case 'r': /* DECSTBM -- Set Scrolling Region */
  1866. if(csiescseq.priv) {
  1867. goto unknown;
  1868. } else {
  1869. DEFAULT(csiescseq.arg[0], 1);
  1870. DEFAULT(csiescseq.arg[1], term.row);
  1871. tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
  1872. tmoveato(0, 0);
  1873. }
  1874. break;
  1875. case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
  1876. tcursor(CURSOR_SAVE);
  1877. break;
  1878. case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
  1879. tcursor(CURSOR_LOAD);
  1880. break;
  1881. }
  1882. }
  1883. void
  1884. csidump(void) {
  1885. int i;
  1886. uint c;
  1887. printf("ESC[");
  1888. for(i = 0; i < csiescseq.len; i++) {
  1889. c = csiescseq.buf[i] & 0xff;
  1890. if(isprint(c)) {
  1891. putchar(c);
  1892. } else if(c == '\n') {
  1893. printf("(\\n)");
  1894. } else if(c == '\r') {
  1895. printf("(\\r)");
  1896. } else if(c == 0x1b) {
  1897. printf("(\\e)");
  1898. } else {
  1899. printf("(%02x)", c);
  1900. }
  1901. }
  1902. putchar('\n');
  1903. }
  1904. void
  1905. csireset(void) {
  1906. memset(&csiescseq, 0, sizeof(csiescseq));
  1907. }
  1908. void
  1909. strhandle(void) {
  1910. char *p = NULL;
  1911. int i, j, narg;
  1912. strparse();
  1913. narg = strescseq.narg;
  1914. switch(strescseq.type) {
  1915. case ']': /* OSC -- Operating System Command */
  1916. switch(i = atoi(strescseq.args[0])) {
  1917. case 0:
  1918. case 1:
  1919. case 2:
  1920. if(narg > 1)
  1921. xsettitle(strescseq.args[1]);
  1922. break;
  1923. case 4: /* color set */
  1924. if(narg < 3)
  1925. break;
  1926. p = strescseq.args[2];
  1927. /* fall through */
  1928. case 104: /* color reset, here p = NULL */
  1929. j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
  1930. if (!xsetcolorname(j, p)) {
  1931. fprintf(stderr, "erresc: invalid color %s\n", p);
  1932. } else {
  1933. /*
  1934. * TODO if defaultbg color is changed, borders
  1935. * are dirty
  1936. */
  1937. redraw(0);
  1938. }
  1939. break;
  1940. default:
  1941. fprintf(stderr, "erresc: unknown str ");
  1942. strdump();
  1943. break;
  1944. }
  1945. break;
  1946. case 'k': /* old title set compatibility */
  1947. xsettitle(strescseq.args[0]);
  1948. break;
  1949. case 'P': /* DSC -- Device Control String */
  1950. case '_': /* APC -- Application Program Command */
  1951. case '^': /* PM -- Privacy Message */
  1952. default:
  1953. fprintf(stderr, "erresc: unknown str ");
  1954. strdump();
  1955. /* die(""); */
  1956. break;
  1957. }
  1958. }
  1959. void
  1960. strparse(void) {
  1961. char *p = strescseq.buf;
  1962. strescseq.narg = 0;
  1963. strescseq.buf[strescseq.len] = '\0';
  1964. while(p && strescseq.narg < STR_ARG_SIZ)
  1965. strescseq.args[strescseq.narg++] = strsep(&p, ";");
  1966. }
  1967. void
  1968. strdump(void) {
  1969. int i;
  1970. uint c;
  1971. printf("ESC%c", strescseq.type);
  1972. for(i = 0; i < strescseq.len; i++) {
  1973. c = strescseq.buf[i] & 0xff;
  1974. if(c == '\0') {
  1975. return;
  1976. } else if(isprint(c)) {
  1977. putchar(c);
  1978. } else if(c == '\n') {
  1979. printf("(\\n)");
  1980. } else if(c == '\r') {
  1981. printf("(\\r)");
  1982. } else if(c == 0x1b) {
  1983. printf("(\\e)");
  1984. } else {
  1985. printf("(%02x)", c);
  1986. }
  1987. }
  1988. printf("ESC\\\n");
  1989. }
  1990. void
  1991. strreset(void) {
  1992. memset(&strescseq, 0, sizeof(strescseq));
  1993. }
  1994. void
  1995. tputtab(bool forward) {
  1996. uint x = term.c.x;
  1997. if(forward) {
  1998. if(x == term.col)
  1999. return;
  2000. for(++x; x < term.col && !term.tabs[x]; ++x)
  2001. /* nothing */ ;
  2002. } else {
  2003. if(x == 0)
  2004. return;
  2005. for(--x; x > 0 && !term.tabs[x]; --x)
  2006. /* nothing */ ;
  2007. }
  2008. tmoveto(x, term.c.y);
  2009. }
  2010. void
  2011. techo(char *buf, int len) {
  2012. for(; len > 0; buf++, len--) {
  2013. char c = *buf;
  2014. if(c == '\033') { /* escape */
  2015. tputc("^", 1);
  2016. tputc("[", 1);
  2017. } else if(c < '\x20') { /* control code */
  2018. if(c != '\n' && c != '\r' && c != '\t') {
  2019. c |= '\x40';
  2020. tputc("^", 1);
  2021. }
  2022. tputc(&c, 1);
  2023. } else {
  2024. break;
  2025. }
  2026. }
  2027. if(len)
  2028. tputc(buf, len);
  2029. }
  2030. void
  2031. tdeftran(char ascii) {
  2032. char c, (*bp)[2];
  2033. static char tbl[][2] = {
  2034. {'0', CS_GRAPHIC0}, {'1', CS_GRAPHIC1}, {'A', CS_UK},
  2035. {'B', CS_USA}, {'<', CS_MULTI}, {'K', CS_GER},
  2036. {'5', CS_FIN}, {'C', CS_FIN},
  2037. {0, 0}
  2038. };
  2039. for (bp = &tbl[0]; (c = (*bp)[0]) && c != ascii; ++bp)
  2040. /* nothing */;
  2041. if (c == 0)
  2042. fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
  2043. else
  2044. term.trantbl[term.icharset] = (*bp)[1];
  2045. }
  2046. void
  2047. tselcs(void) {
  2048. if (term.trantbl[term.charset] == CS_GRAPHIC0)
  2049. term.c.attr.mode |= ATTR_GFX;
  2050. else
  2051. term.c.attr.mode &= ~ATTR_GFX;
  2052. }
  2053. void
  2054. tputc(char *c, int len) {
  2055. uchar ascii = *c;
  2056. bool control = ascii < '\x20' || ascii == 0177;
  2057. long u8char;
  2058. int width;
  2059. if(len == 1) {
  2060. width = 1;
  2061. } else {
  2062. utf8decode(c, &u8char);
  2063. width = wcwidth(u8char);
  2064. }
  2065. if(iofd != -1) {
  2066. if(xwrite(iofd, c, len) < 0) {
  2067. fprintf(stderr, "Error writing in %s:%s\n",
  2068. opt_io, strerror(errno));
  2069. close(iofd);
  2070. iofd = -1;
  2071. }
  2072. }
  2073. /*
  2074. * STR sequences must be checked before anything else
  2075. * because it can use some control codes as part of the sequence.
  2076. */
  2077. if(term.esc & ESC_STR) {
  2078. switch(ascii) {
  2079. case '\033':
  2080. term.esc = ESC_START | ESC_STR_END;
  2081. break;
  2082. case '\a': /* backwards compatibility to xterm */
  2083. term.esc = 0;
  2084. strhandle();
  2085. break;
  2086. default:
  2087. if(strescseq.len + len < sizeof(strescseq.buf) - 1) {
  2088. memmove(&strescseq.buf[strescseq.len], c, len);
  2089. strescseq.len += len;
  2090. } else {
  2091. /*
  2092. * Here is a bug in terminals. If the user never sends
  2093. * some code to stop the str or esc command, then st
  2094. * will stop responding. But this is better than
  2095. * silently failing with unknown characters. At least
  2096. * then users will report back.
  2097. *
  2098. * In the case users ever get fixed, here is the code:
  2099. */
  2100. /*
  2101. * term.esc = 0;
  2102. * strhandle();
  2103. */
  2104. }
  2105. }
  2106. return;
  2107. }
  2108. /*
  2109. * Actions of control codes must be performed as soon they arrive
  2110. * because they can be embedded inside a control sequence, and
  2111. * they must not cause conflicts with sequences.
  2112. */
  2113. if(control) {
  2114. switch(ascii) {
  2115. case '\t': /* HT */
  2116. tputtab(1);
  2117. return;
  2118. case '\b': /* BS */
  2119. tmoveto(term.c.x-1, term.c.y);
  2120. return;
  2121. case '\r': /* CR */
  2122. tmoveto(0, term.c.y);
  2123. return;
  2124. case '\f': /* LF */
  2125. case '\v': /* VT */
  2126. case '\n': /* LF */
  2127. /* go to first col if the mode is set */
  2128. tnewline(IS_SET(MODE_CRLF));
  2129. return;
  2130. case '\a': /* BEL */
  2131. if(!(xw.state & WIN_FOCUSED))
  2132. xseturgency(1);
  2133. if (bellvolume)
  2134. XBell(xw.dpy, bellvolume);
  2135. return;
  2136. case '\033': /* ESC */
  2137. csireset();
  2138. term.esc = ESC_START;
  2139. return;
  2140. case '\016': /* SO */
  2141. term.charset = 0;
  2142. tselcs();
  2143. return;
  2144. case '\017': /* SI */
  2145. term.charset = 1;
  2146. tselcs();
  2147. return;
  2148. case '\032': /* SUB */
  2149. case '\030': /* CAN */
  2150. csireset();
  2151. return;
  2152. case '\005': /* ENQ (IGNORED) */
  2153. case '\000': /* NUL (IGNORED) */
  2154. case '\021': /* XON (IGNORED) */
  2155. case '\023': /* XOFF (IGNORED) */
  2156. case 0177: /* DEL (IGNORED) */
  2157. return;
  2158. }
  2159. } else if(term.esc & ESC_START) {
  2160. if(term.esc & ESC_CSI) {
  2161. csiescseq.buf[csiescseq.len++] = ascii;
  2162. if(BETWEEN(ascii, 0x40, 0x7E)
  2163. || csiescseq.len >= \
  2164. sizeof(csiescseq.buf)-1) {
  2165. term.esc = 0;
  2166. csiparse();
  2167. csihandle();
  2168. }
  2169. } else if(term.esc & ESC_STR_END) {
  2170. term.esc = 0;
  2171. if(ascii == '\\')
  2172. strhandle();
  2173. } else if(term.esc & ESC_ALTCHARSET) {
  2174. tdeftran(ascii);
  2175. tselcs();
  2176. term.esc = 0;
  2177. } else if(term.esc & ESC_TEST) {
  2178. if(ascii == '8') { /* DEC screen alignment test. */
  2179. char E[UTF_SIZ] = "E";
  2180. int x, y;
  2181. for(x = 0; x < term.col; ++x) {
  2182. for(y = 0; y < term.row; ++y)
  2183. tsetchar(E, &term.c.attr, x, y);
  2184. }
  2185. }
  2186. term.esc = 0;
  2187. } else {
  2188. switch(ascii) {
  2189. case '[':
  2190. term.esc |= ESC_CSI;
  2191. break;
  2192. case '#':
  2193. term.esc |= ESC_TEST;
  2194. break;
  2195. case 'P': /* DCS -- Device Control String */
  2196. case '_': /* APC -- Application Program Command */
  2197. case '^': /* PM -- Privacy Message */
  2198. case ']': /* OSC -- Operating System Command */
  2199. case 'k': /* old title set compatibility */
  2200. strreset();
  2201. strescseq.type = ascii;
  2202. term.esc |= ESC_STR;
  2203. break;
  2204. case '(': /* set primary charset G0 */
  2205. case ')': /* set secondary charset G1 */
  2206. case '*': /* set tertiary charset G2 */
  2207. case '+': /* set quaternary charset G3 */
  2208. term.icharset = ascii - '(';
  2209. term.esc |= ESC_ALTCHARSET;
  2210. break;
  2211. case 'D': /* IND -- Linefeed */
  2212. if(term.c.y == term.bot) {
  2213. tscrollup(term.top, 1);
  2214. } else {
  2215. tmoveto(term.c.x, term.c.y+1);
  2216. }
  2217. term.esc = 0;
  2218. break;
  2219. case 'E': /* NEL -- Next line */
  2220. tnewline(1); /* always go to first col */
  2221. term.esc = 0;
  2222. break;
  2223. case 'H': /* HTS -- Horizontal tab stop */
  2224. term.tabs[term.c.x] = 1;
  2225. term.esc = 0;
  2226. break;
  2227. case 'M': /* RI -- Reverse index */
  2228. if(term.c.y == term.top) {
  2229. tscrolldown(term.top, 1);
  2230. } else {
  2231. tmoveto(term.c.x, term.c.y-1);
  2232. }
  2233. term.esc = 0;
  2234. break;
  2235. case 'Z': /* DECID -- Identify Terminal */
  2236. ttywrite(VT102ID, sizeof(VT102ID) - 1);
  2237. term.esc = 0;
  2238. break;
  2239. case 'c': /* RIS -- Reset to inital state */
  2240. treset();
  2241. term.esc = 0;
  2242. xresettitle();
  2243. xloadcols();
  2244. break;
  2245. case '=': /* DECPAM -- Application keypad */
  2246. term.mode |= MODE_APPKEYPAD;
  2247. term.esc = 0;
  2248. break;
  2249. case '>': /* DECPNM -- Normal keypad */
  2250. term.mode &= ~MODE_APPKEYPAD;
  2251. term.esc = 0;
  2252. break;
  2253. case '7': /* DECSC -- Save Cursor */
  2254. tcursor(CURSOR_SAVE);
  2255. term.esc = 0;
  2256. break;
  2257. case '8': /* DECRC -- Restore Cursor */
  2258. tcursor(CURSOR_LOAD);
  2259. term.esc = 0;
  2260. break;
  2261. case '\\': /* ST -- Stop */
  2262. term.esc = 0;
  2263. break;
  2264. default:
  2265. fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
  2266. (uchar) ascii, isprint(ascii)? ascii:'.');
  2267. term.esc = 0;
  2268. }
  2269. }
  2270. /*
  2271. * All characters which form part of a sequence are not
  2272. * printed
  2273. */
  2274. return;
  2275. }
  2276. /*
  2277. * Display control codes only if we are in graphic mode
  2278. */
  2279. if(control && !(term.c.attr.mode & ATTR_GFX))
  2280. return;
  2281. if(sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
  2282. selclear(NULL);
  2283. if(IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
  2284. term.line[term.c.y][term.c.x].mode |= ATTR_WRAP;
  2285. tnewline(1);
  2286. }
  2287. if(IS_SET(MODE_INSERT) && term.c.x+1 < term.col) {
  2288. memmove(&term.line[term.c.y][term.c.x+1],
  2289. &term.line[term.c.y][term.c.x],
  2290. (term.col - term.c.x - 1) * sizeof(Glyph));
  2291. }
  2292. if(term.c.x+width > term.col)
  2293. tnewline(1);
  2294. tsetchar(c, &term.c.attr, term.c.x, term.c.y);
  2295. if(width == 2) {
  2296. term.line[term.c.y][term.c.x].mode |= ATTR_WIDE;
  2297. if(term.c.x+1 < term.col) {
  2298. term.line[term.c.y][term.c.x+1].c[0] = '\0';
  2299. term.line[term.c.y][term.c.x+1].mode = ATTR_WDUMMY;
  2300. }
  2301. }
  2302. if(term.c.x+width < term.col) {
  2303. tmoveto(term.c.x+width, term.c.y);
  2304. } else {
  2305. term.c.state |= CURSOR_WRAPNEXT;
  2306. }
  2307. }
  2308. int
  2309. tresize(int col, int row) {
  2310. int i;
  2311. int minrow = MIN(row, term.row);
  2312. int mincol = MIN(col, term.col);
  2313. int slide = term.c.y - row + 1;
  2314. bool *bp;
  2315. Line *orig;
  2316. if(col < 1 || row < 1)
  2317. return 0;
  2318. /* free unneeded rows */
  2319. i = 0;
  2320. if(slide > 0) {
  2321. /*
  2322. * slide screen to keep cursor where we expect it -
  2323. * tscrollup would work here, but we can optimize to
  2324. * memmove because we're freeing the earlier lines
  2325. */
  2326. for(/* i = 0 */; i < slide; i++) {
  2327. free(term.line[i]);
  2328. free(term.alt[i]);
  2329. }
  2330. memmove(term.line, term.line + slide, row * sizeof(Line));
  2331. memmove(term.alt, term.alt + slide, row * sizeof(Line));
  2332. }
  2333. for(i += row; i < term.row; i++) {
  2334. free(term.line[i]);
  2335. free(term.alt[i]);
  2336. }
  2337. /* resize to new height */
  2338. term.line = xrealloc(term.line, row * sizeof(Line));
  2339. term.alt = xrealloc(term.alt, row * sizeof(Line));
  2340. term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
  2341. term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
  2342. /* resize each row to new width, zero-pad if needed */
  2343. for(i = 0; i < minrow; i++) {
  2344. term.dirty[i] = 1;
  2345. term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
  2346. term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
  2347. }
  2348. /* allocate any new rows */
  2349. for(/* i == minrow */; i < row; i++) {
  2350. term.dirty[i] = 1;
  2351. term.line[i] = xmalloc(col * sizeof(Glyph));
  2352. term.alt[i] = xmalloc(col * sizeof(Glyph));
  2353. }
  2354. if(col > term.col) {
  2355. bp = term.tabs + term.col;
  2356. memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
  2357. while(--bp > term.tabs && !*bp)
  2358. /* nothing */ ;
  2359. for(bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
  2360. *bp = 1;
  2361. }
  2362. /* update terminal size */
  2363. term.col = col;
  2364. term.row = row;
  2365. /* reset scrolling region */
  2366. tsetscroll(0, row-1);
  2367. /* make use of the LIMIT in tmoveto */
  2368. tmoveto(term.c.x, term.c.y);
  2369. /* Clearing both screens */
  2370. orig = term.line;
  2371. do {
  2372. if(mincol < col && 0 < minrow) {
  2373. tclearregion(mincol, 0, col - 1, minrow - 1);
  2374. }
  2375. if(0 < col && minrow < row) {
  2376. tclearregion(0, minrow, col - 1, row - 1);
  2377. }
  2378. tswapscreen();
  2379. } while(orig != term.line);
  2380. return (slide > 0);
  2381. }
  2382. void
  2383. xresize(int col, int row) {
  2384. xw.tw = MAX(1, col * xw.cw);
  2385. xw.th = MAX(1, row * xw.ch);
  2386. XFreePixmap(xw.dpy, xw.buf);
  2387. xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
  2388. DefaultDepth(xw.dpy, xw.scr));
  2389. XftDrawChange(xw.draw, xw.buf);
  2390. xclear(0, 0, xw.w, xw.h);
  2391. }
  2392. static inline ushort
  2393. sixd_to_16bit(int x) {
  2394. return x == 0 ? 0 : 0x3737 + 0x2828 * x;
  2395. }
  2396. void
  2397. xloadcols(void) {
  2398. int i, r, g, b;
  2399. XRenderColor color = { .alpha = 0xffff };
  2400. static bool loaded;
  2401. Colour *cp;
  2402. if(loaded) {
  2403. for (cp = dc.col; cp < dc.col + LEN(dc.col); ++cp)
  2404. XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
  2405. }
  2406. /* load colors [0-15] colors and [256-LEN(colorname)[ (config.h) */
  2407. for(i = 0; i < LEN(colorname); i++) {
  2408. if(!colorname[i])
  2409. continue;
  2410. if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, colorname[i], &dc.col[i])) {
  2411. die("Could not allocate color '%s'\n", colorname[i]);
  2412. }
  2413. }
  2414. /* load colors [16-255] ; same colors as xterm */
  2415. for(i = 16, r = 0; r < 6; r++) {
  2416. for(g = 0; g < 6; g++) {
  2417. for(b = 0; b < 6; b++) {
  2418. color.red = sixd_to_16bit(r);
  2419. color.green = sixd_to_16bit(g);
  2420. color.blue = sixd_to_16bit(b);
  2421. if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &dc.col[i])) {
  2422. die("Could not allocate color %d\n", i);
  2423. }
  2424. i++;
  2425. }
  2426. }
  2427. }
  2428. for(r = 0; r < 24; r++, i++) {
  2429. color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
  2430. if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color,
  2431. &dc.col[i])) {
  2432. die("Could not allocate color %d\n", i);
  2433. }
  2434. }
  2435. loaded = true;
  2436. }
  2437. int
  2438. xsetcolorname(int x, const char *name) {
  2439. XRenderColor color = { .alpha = 0xffff };
  2440. Colour colour;
  2441. if (x < 0 || x > LEN(colorname))
  2442. return -1;
  2443. if(!name) {
  2444. if(16 <= x && x < 16 + 216) {
  2445. int r = (x - 16) / 36, g = ((x - 16) % 36) / 6, b = (x - 16) % 6;
  2446. color.red = sixd_to_16bit(r);
  2447. color.green = sixd_to_16bit(g);
  2448. color.blue = sixd_to_16bit(b);
  2449. if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &colour))
  2450. return 0; /* something went wrong */
  2451. dc.col[x] = colour;
  2452. return 1;
  2453. } else if (16 + 216 <= x && x < 256) {
  2454. color.red = color.green = color.blue = 0x0808 + 0x0a0a * (x - (16 + 216));
  2455. if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &colour))
  2456. return 0; /* something went wrong */
  2457. dc.col[x] = colour;
  2458. return 1;
  2459. } else {
  2460. name = colorname[x];
  2461. }
  2462. }
  2463. if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, &colour))
  2464. return 0;
  2465. dc.col[x] = colour;
  2466. return 1;
  2467. }
  2468. void
  2469. xtermclear(int col1, int row1, int col2, int row2) {
  2470. XftDrawRect(xw.draw,
  2471. &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
  2472. borderpx + col1 * xw.cw,
  2473. borderpx + row1 * xw.ch,
  2474. (col2-col1+1) * xw.cw,
  2475. (row2-row1+1) * xw.ch);
  2476. }
  2477. /*
  2478. * Absolute coordinates.
  2479. */
  2480. void
  2481. xclear(int x1, int y1, int x2, int y2) {
  2482. XftDrawRect(xw.draw,
  2483. &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
  2484. x1, y1, x2-x1, y2-y1);
  2485. }
  2486. void
  2487. xhints(void) {
  2488. XClassHint class = {opt_class ? opt_class : termname, termname};
  2489. XWMHints wm = {.flags = InputHint, .input = 1};
  2490. XSizeHints *sizeh = NULL;
  2491. sizeh = XAllocSizeHints();
  2492. if(xw.isfixed == False) {
  2493. sizeh->flags = PSize | PResizeInc | PBaseSize;
  2494. sizeh->height = xw.h;
  2495. sizeh->width = xw.w;
  2496. sizeh->height_inc = xw.ch;
  2497. sizeh->width_inc = xw.cw;
  2498. sizeh->base_height = 2 * borderpx;
  2499. sizeh->base_width = 2 * borderpx;
  2500. } else {
  2501. sizeh->flags = PMaxSize | PMinSize;
  2502. sizeh->min_width = sizeh->max_width = xw.fw;
  2503. sizeh->min_height = sizeh->max_height = xw.fh;
  2504. }
  2505. XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm, &class);
  2506. XFree(sizeh);
  2507. }
  2508. int
  2509. xloadfont(Font *f, FcPattern *pattern) {
  2510. FcPattern *match;
  2511. FcResult result;
  2512. match = FcFontMatch(NULL, pattern, &result);
  2513. if(!match)
  2514. return 1;
  2515. if(!(f->match = XftFontOpenPattern(xw.dpy, match))) {
  2516. FcPatternDestroy(match);
  2517. return 1;
  2518. }
  2519. f->set = NULL;
  2520. f->pattern = FcPatternDuplicate(pattern);
  2521. f->ascent = f->match->ascent;
  2522. f->descent = f->match->descent;
  2523. f->lbearing = 0;
  2524. f->rbearing = f->match->max_advance_width;
  2525. f->height = f->ascent + f->descent;
  2526. f->width = f->lbearing + f->rbearing;
  2527. return 0;
  2528. }
  2529. void
  2530. xloadfonts(char *fontstr, int fontsize) {
  2531. FcPattern *pattern;
  2532. FcResult result;
  2533. double fontval;
  2534. if(fontstr[0] == '-') {
  2535. pattern = XftXlfdParse(fontstr, False, False);
  2536. } else {
  2537. pattern = FcNameParse((FcChar8 *)fontstr);
  2538. }
  2539. if(!pattern)
  2540. die("st: can't open font %s\n", fontstr);
  2541. if(fontsize > 0) {
  2542. FcPatternDel(pattern, FC_PIXEL_SIZE);
  2543. FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
  2544. usedfontsize = fontsize;
  2545. } else {
  2546. result = FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval);
  2547. if(result == FcResultMatch) {
  2548. usedfontsize = (int)fontval;
  2549. } else {
  2550. /*
  2551. * Default font size is 12, if none given. This is to
  2552. * have a known usedfontsize value.
  2553. */
  2554. FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
  2555. usedfontsize = 12;
  2556. }
  2557. }
  2558. FcConfigSubstitute(0, pattern, FcMatchPattern);
  2559. FcDefaultSubstitute(pattern);
  2560. if(xloadfont(&dc.font, pattern))
  2561. die("st: can't open font %s\n", fontstr);
  2562. /* Setting character width and height. */
  2563. xw.cw = CEIL(dc.font.width * cwscale);
  2564. xw.ch = CEIL(dc.font.height * chscale);
  2565. FcPatternDel(pattern, FC_SLANT);
  2566. FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
  2567. if(xloadfont(&dc.ifont, pattern))
  2568. die("st: can't open font %s\n", fontstr);
  2569. FcPatternDel(pattern, FC_WEIGHT);
  2570. FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
  2571. if(xloadfont(&dc.ibfont, pattern))
  2572. die("st: can't open font %s\n", fontstr);
  2573. FcPatternDel(pattern, FC_SLANT);
  2574. FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
  2575. if(xloadfont(&dc.bfont, pattern))
  2576. die("st: can't open font %s\n", fontstr);
  2577. FcPatternDestroy(pattern);
  2578. }
  2579. int
  2580. xloadfontset(Font *f) {
  2581. FcResult result;
  2582. if(!(f->set = FcFontSort(0, f->pattern, FcTrue, 0, &result)))
  2583. return 1;
  2584. return 0;
  2585. }
  2586. void
  2587. xunloadfont(Font *f) {
  2588. XftFontClose(xw.dpy, f->match);
  2589. FcPatternDestroy(f->pattern);
  2590. if(f->set)
  2591. FcFontSetDestroy(f->set);
  2592. }
  2593. void
  2594. xunloadfonts(void) {
  2595. int i;
  2596. /* Free the loaded fonts in the font cache. */
  2597. for(i = 0; i < frclen; i++) {
  2598. XftFontClose(xw.dpy, frc[i].font);
  2599. }
  2600. frclen = 0;
  2601. xunloadfont(&dc.font);
  2602. xunloadfont(&dc.bfont);
  2603. xunloadfont(&dc.ifont);
  2604. xunloadfont(&dc.ibfont);
  2605. }
  2606. void
  2607. xzoom(const Arg *arg) {
  2608. xunloadfonts();
  2609. xloadfonts(usedfont, usedfontsize + arg->i);
  2610. cresize(0, 0);
  2611. redraw(0);
  2612. }
  2613. void
  2614. xinit(void) {
  2615. XGCValues gcvalues;
  2616. Cursor cursor;
  2617. Window parent;
  2618. int sw, sh;
  2619. if(!(xw.dpy = XOpenDisplay(NULL)))
  2620. die("Can't open display\n");
  2621. xw.scr = XDefaultScreen(xw.dpy);
  2622. xw.vis = XDefaultVisual(xw.dpy, xw.scr);
  2623. /* font */
  2624. if(!FcInit())
  2625. die("Could not init fontconfig.\n");
  2626. usedfont = (opt_font == NULL)? font : opt_font;
  2627. xloadfonts(usedfont, 0);
  2628. /* colors */
  2629. xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
  2630. xloadcols();
  2631. /* adjust fixed window geometry */
  2632. if(xw.isfixed) {
  2633. sw = DisplayWidth(xw.dpy, xw.scr);
  2634. sh = DisplayHeight(xw.dpy, xw.scr);
  2635. if(xw.fx < 0)
  2636. xw.fx = sw + xw.fx - xw.fw - 1;
  2637. if(xw.fy < 0)
  2638. xw.fy = sh + xw.fy - xw.fh - 1;
  2639. xw.h = xw.fh;
  2640. xw.w = xw.fw;
  2641. } else {
  2642. /* window - default size */
  2643. xw.h = 2 * borderpx + term.row * xw.ch;
  2644. xw.w = 2 * borderpx + term.col * xw.cw;
  2645. xw.fx = 0;
  2646. xw.fy = 0;
  2647. }
  2648. /* Events */
  2649. xw.attrs.background_pixel = dc.col[defaultbg].pixel;
  2650. xw.attrs.border_pixel = dc.col[defaultbg].pixel;
  2651. xw.attrs.bit_gravity = NorthWestGravity;
  2652. xw.attrs.event_mask = FocusChangeMask | KeyPressMask
  2653. | ExposureMask | VisibilityChangeMask | StructureNotifyMask
  2654. | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
  2655. xw.attrs.colormap = xw.cmap;
  2656. parent = opt_embed ? strtol(opt_embed, NULL, 0) : \
  2657. XRootWindow(xw.dpy, xw.scr);
  2658. xw.win = XCreateWindow(xw.dpy, parent, xw.fx, xw.fy,
  2659. xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
  2660. xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
  2661. | CWEventMask | CWColormap, &xw.attrs);
  2662. memset(&gcvalues, 0, sizeof(gcvalues));
  2663. gcvalues.graphics_exposures = False;
  2664. dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
  2665. &gcvalues);
  2666. xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
  2667. DefaultDepth(xw.dpy, xw.scr));
  2668. XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
  2669. XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
  2670. /* Xft rendering context */
  2671. xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
  2672. /* input methods */
  2673. if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
  2674. XSetLocaleModifiers("@im=local");
  2675. if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
  2676. XSetLocaleModifiers("@im=");
  2677. if((xw.xim = XOpenIM(xw.dpy,
  2678. NULL, NULL, NULL)) == NULL) {
  2679. die("XOpenIM failed. Could not open input"
  2680. " device.\n");
  2681. }
  2682. }
  2683. }
  2684. xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
  2685. | XIMStatusNothing, XNClientWindow, xw.win,
  2686. XNFocusWindow, xw.win, NULL);
  2687. if(xw.xic == NULL)
  2688. die("XCreateIC failed. Could not obtain input method.\n");
  2689. /* white cursor, black outline */
  2690. cursor = XCreateFontCursor(xw.dpy, XC_xterm);
  2691. XDefineCursor(xw.dpy, xw.win, cursor);
  2692. XRecolorCursor(xw.dpy, cursor,
  2693. &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
  2694. &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
  2695. xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
  2696. xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
  2697. XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
  2698. xresettitle();
  2699. XMapWindow(xw.dpy, xw.win);
  2700. xhints();
  2701. XSync(xw.dpy, 0);
  2702. }
  2703. void
  2704. xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
  2705. int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
  2706. width = charlen * xw.cw, xp, i;
  2707. int frcflags;
  2708. int u8fl, u8fblen, u8cblen, doesexist;
  2709. char *u8c, *u8fs;
  2710. long u8char;
  2711. Font *font = &dc.font;
  2712. FcResult fcres;
  2713. FcPattern *fcpattern, *fontpattern;
  2714. FcFontSet *fcsets[] = { NULL };
  2715. FcCharSet *fccharset;
  2716. Colour *fg, *bg, *temp, revfg, revbg, truefg, truebg;
  2717. XRenderColor colfg, colbg;
  2718. Rectangle r;
  2719. int oneatatime;
  2720. frcflags = FRC_NORMAL;
  2721. if(base.mode & ATTR_ITALIC) {
  2722. if(base.fg == defaultfg)
  2723. base.fg = defaultitalic;
  2724. font = &dc.ifont;
  2725. frcflags = FRC_ITALIC;
  2726. } else if((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD)) {
  2727. if(base.fg == defaultfg)
  2728. base.fg = defaultitalic;
  2729. font = &dc.ibfont;
  2730. frcflags = FRC_ITALICBOLD;
  2731. } else if(base.mode & ATTR_UNDERLINE) {
  2732. if(base.fg == defaultfg)
  2733. base.fg = defaultunderline;
  2734. }
  2735. if(IS_TRUECOL(base.fg)) {
  2736. colfg.red = TRUERED(base.fg);
  2737. colfg.green = TRUEGREEN(base.fg);
  2738. colfg.blue = TRUEBLUE(base.fg);
  2739. XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
  2740. fg = &truefg;
  2741. } else {
  2742. fg = &dc.col[base.fg];
  2743. }
  2744. if(IS_TRUECOL(base.bg)) {
  2745. colbg.green = TRUEGREEN(base.bg);
  2746. colbg.red = TRUERED(base.bg);
  2747. colbg.blue = TRUEBLUE(base.bg);
  2748. XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
  2749. bg = &truebg;
  2750. } else {
  2751. bg = &dc.col[base.bg];
  2752. }
  2753. if(base.mode & ATTR_BOLD) {
  2754. if(BETWEEN(base.fg, 0, 7)) {
  2755. /* basic system colors */
  2756. fg = &dc.col[base.fg + 8];
  2757. } else if(BETWEEN(base.fg, 16, 195)) {
  2758. /* 256 colors */
  2759. fg = &dc.col[base.fg + 36];
  2760. } else if(BETWEEN(base.fg, 232, 251)) {
  2761. /* greyscale */
  2762. fg = &dc.col[base.fg + 4];
  2763. }
  2764. /*
  2765. * Those ranges will not be brightened:
  2766. * 8 - 15 bright system colors
  2767. * 196 - 231 highest 256 color cube
  2768. * 252 - 255 brightest colors in greyscale
  2769. */
  2770. font = &dc.bfont;
  2771. frcflags = FRC_BOLD;
  2772. }
  2773. if(IS_SET(MODE_REVERSE)) {
  2774. if(fg == &dc.col[defaultfg]) {
  2775. fg = &dc.col[defaultbg];
  2776. } else {
  2777. colfg.red = ~fg->color.red;
  2778. colfg.green = ~fg->color.green;
  2779. colfg.blue = ~fg->color.blue;
  2780. colfg.alpha = fg->color.alpha;
  2781. XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
  2782. fg = &revfg;
  2783. }
  2784. if(bg == &dc.col[defaultbg]) {
  2785. bg = &dc.col[defaultfg];
  2786. } else {
  2787. colbg.red = ~bg->color.red;
  2788. colbg.green = ~bg->color.green;
  2789. colbg.blue = ~bg->color.blue;
  2790. colbg.alpha = bg->color.alpha;
  2791. XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &revbg);
  2792. bg = &revbg;
  2793. }
  2794. }
  2795. if(base.mode & ATTR_REVERSE) {
  2796. temp = fg;
  2797. fg = bg;
  2798. bg = temp;
  2799. }
  2800. if(base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
  2801. fg = bg;
  2802. /* Intelligent cleaning up of the borders. */
  2803. if(x == 0) {
  2804. xclear(0, (y == 0)? 0 : winy, borderpx,
  2805. winy + xw.ch + ((y >= term.row-1)? xw.h : 0));
  2806. }
  2807. if(x + charlen >= term.col) {
  2808. xclear(winx + width, (y == 0)? 0 : winy, xw.w,
  2809. ((y >= term.row-1)? xw.h : (winy + xw.ch)));
  2810. }
  2811. if(y == 0)
  2812. xclear(winx, 0, winx + width, borderpx);
  2813. if(y == term.row-1)
  2814. xclear(winx, winy + xw.ch, winx + width, xw.h);
  2815. /* Clean up the region we want to draw to. */
  2816. XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
  2817. /* Set the clip region because Xft is sometimes dirty. */
  2818. r.x = 0;
  2819. r.y = 0;
  2820. r.height = xw.ch;
  2821. r.width = width;
  2822. XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
  2823. for(xp = winx; bytelen > 0;) {
  2824. /*
  2825. * Search for the range in the to be printed string of glyphs
  2826. * that are in the main font. Then print that range. If
  2827. * some glyph is found that is not in the font, do the
  2828. * fallback dance.
  2829. */
  2830. u8fs = s;
  2831. u8fblen = 0;
  2832. u8fl = 0;
  2833. oneatatime = font->width != xw.cw;
  2834. for(;;) {
  2835. u8c = s;
  2836. u8cblen = utf8decode(s, &u8char);
  2837. s += u8cblen;
  2838. bytelen -= u8cblen;
  2839. doesexist = XftCharExists(xw.dpy, font->match, u8char);
  2840. if(oneatatime || !doesexist || bytelen <= 0) {
  2841. if(oneatatime || bytelen <= 0) {
  2842. if(doesexist) {
  2843. u8fl++;
  2844. u8fblen += u8cblen;
  2845. }
  2846. }
  2847. if(u8fl > 0) {
  2848. XftDrawStringUtf8(xw.draw, fg,
  2849. font->match, xp,
  2850. winy + font->ascent,
  2851. (FcChar8 *)u8fs,
  2852. u8fblen);
  2853. xp += xw.cw * u8fl;
  2854. }
  2855. break;
  2856. }
  2857. u8fl++;
  2858. u8fblen += u8cblen;
  2859. }
  2860. if(doesexist) {
  2861. if (oneatatime)
  2862. continue;
  2863. break;
  2864. }
  2865. /* Search the font cache. */
  2866. for(i = 0; i < frclen; i++) {
  2867. if(XftCharExists(xw.dpy, frc[i].font, u8char)
  2868. && frc[i].flags == frcflags) {
  2869. break;
  2870. }
  2871. }
  2872. /* Nothing was found. */
  2873. if(i >= frclen) {
  2874. if(!font->set)
  2875. xloadfontset(font);
  2876. fcsets[0] = font->set;
  2877. /*
  2878. * Nothing was found in the cache. Now use
  2879. * some dozen of Fontconfig calls to get the
  2880. * font for one single character.
  2881. */
  2882. fcpattern = FcPatternDuplicate(font->pattern);
  2883. fccharset = FcCharSetCreate();
  2884. FcCharSetAddChar(fccharset, u8char);
  2885. FcPatternAddCharSet(fcpattern, FC_CHARSET,
  2886. fccharset);
  2887. FcPatternAddBool(fcpattern, FC_SCALABLE,
  2888. FcTrue);
  2889. FcConfigSubstitute(0, fcpattern,
  2890. FcMatchPattern);
  2891. FcDefaultSubstitute(fcpattern);
  2892. fontpattern = FcFontSetMatch(0, fcsets,
  2893. FcTrue, fcpattern, &fcres);
  2894. /*
  2895. * Overwrite or create the new cache entry.
  2896. */
  2897. if(frclen >= LEN(frc)) {
  2898. frclen = LEN(frc) - 1;
  2899. XftFontClose(xw.dpy, frc[frclen].font);
  2900. }
  2901. frc[frclen].font = XftFontOpenPattern(xw.dpy,
  2902. fontpattern);
  2903. frc[frclen].flags = frcflags;
  2904. i = frclen;
  2905. frclen++;
  2906. FcPatternDestroy(fcpattern);
  2907. FcCharSetDestroy(fccharset);
  2908. }
  2909. XftDrawStringUtf8(xw.draw, fg, frc[i].font,
  2910. xp, winy + frc[i].font->ascent,
  2911. (FcChar8 *)u8c, u8cblen);
  2912. xp += xw.cw * wcwidth(u8char);
  2913. }
  2914. /*
  2915. XftDrawStringUtf8(xw.draw, fg, font->set, winx,
  2916. winy + font->ascent, (FcChar8 *)s, bytelen);
  2917. */
  2918. if(base.mode & ATTR_UNDERLINE) {
  2919. XftDrawRect(xw.draw, fg, winx, winy + font->ascent + 1,
  2920. width, 1);
  2921. }
  2922. /* Reset clip to none. */
  2923. XftDrawSetClip(xw.draw, 0);
  2924. }
  2925. void
  2926. xdrawcursor(void) {
  2927. static int oldx = 0, oldy = 0;
  2928. int sl, width, curx;
  2929. Glyph g = {{' '}, ATTR_NULL, defaultbg, defaultcs};
  2930. LIMIT(oldx, 0, term.col-1);
  2931. LIMIT(oldy, 0, term.row-1);
  2932. curx = term.c.x;
  2933. /* adjust position if in dummy */
  2934. if(term.line[oldy][oldx].mode & ATTR_WDUMMY)
  2935. oldx--;
  2936. if(term.line[term.c.y][curx].mode & ATTR_WDUMMY)
  2937. curx--;
  2938. memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
  2939. /* remove the old cursor */
  2940. sl = utf8size(term.line[oldy][oldx].c);
  2941. width = (term.line[oldy][oldx].mode & ATTR_WIDE)? 2 : 1;
  2942. xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx,
  2943. oldy, width, sl);
  2944. /* draw the new one */
  2945. if(!(IS_SET(MODE_HIDE))) {
  2946. if(xw.state & WIN_FOCUSED) {
  2947. if(IS_SET(MODE_REVERSE)) {
  2948. g.mode |= ATTR_REVERSE;
  2949. g.fg = defaultcs;
  2950. g.bg = defaultfg;
  2951. }
  2952. sl = utf8size(g.c);
  2953. width = (term.line[term.c.y][curx].mode & ATTR_WIDE)\
  2954. ? 2 : 1;
  2955. xdraws(g.c, g, term.c.x, term.c.y, width, sl);
  2956. } else {
  2957. XftDrawRect(xw.draw, &dc.col[defaultcs],
  2958. borderpx + curx * xw.cw,
  2959. borderpx + term.c.y * xw.ch,
  2960. xw.cw - 1, 1);
  2961. XftDrawRect(xw.draw, &dc.col[defaultcs],
  2962. borderpx + curx * xw.cw,
  2963. borderpx + term.c.y * xw.ch,
  2964. 1, xw.ch - 1);
  2965. XftDrawRect(xw.draw, &dc.col[defaultcs],
  2966. borderpx + (curx + 1) * xw.cw - 1,
  2967. borderpx + term.c.y * xw.ch,
  2968. 1, xw.ch - 1);
  2969. XftDrawRect(xw.draw, &dc.col[defaultcs],
  2970. borderpx + curx * xw.cw,
  2971. borderpx + (term.c.y + 1) * xw.ch - 1,
  2972. xw.cw, 1);
  2973. }
  2974. oldx = curx, oldy = term.c.y;
  2975. }
  2976. }
  2977. void
  2978. xsettitle(char *p) {
  2979. XTextProperty prop;
  2980. Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
  2981. &prop);
  2982. XSetWMName(xw.dpy, xw.win, &prop);
  2983. XFree(prop.value);
  2984. }
  2985. void
  2986. xresettitle(void) {
  2987. xsettitle(opt_title ? opt_title : "st");
  2988. }
  2989. void
  2990. redraw(int timeout) {
  2991. struct timespec tv = {0, timeout * 1000};
  2992. tfulldirt();
  2993. draw();
  2994. if(timeout > 0) {
  2995. nanosleep(&tv, NULL);
  2996. XSync(xw.dpy, False); /* necessary for a good tput flash */
  2997. }
  2998. }
  2999. void
  3000. draw(void) {
  3001. drawregion(0, 0, term.col, term.row);
  3002. XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w,
  3003. xw.h, 0, 0);
  3004. XSetForeground(xw.dpy, dc.gc,
  3005. dc.col[IS_SET(MODE_REVERSE)?
  3006. defaultfg : defaultbg].pixel);
  3007. }
  3008. void
  3009. drawregion(int x1, int y1, int x2, int y2) {
  3010. int ic, ib, x, y, ox, sl;
  3011. Glyph base, new;
  3012. char buf[DRAW_BUF_SIZ];
  3013. bool ena_sel = sel.ob.x != -1;
  3014. long u8char;
  3015. if(sel.alt ^ IS_SET(MODE_ALTSCREEN))
  3016. ena_sel = 0;
  3017. if(!(xw.state & WIN_VISIBLE))
  3018. return;
  3019. for(y = y1; y < y2; y++) {
  3020. if(!term.dirty[y])
  3021. continue;
  3022. xtermclear(0, y, term.col, y);
  3023. term.dirty[y] = 0;
  3024. base = term.line[y][0];
  3025. ic = ib = ox = 0;
  3026. for(x = x1; x < x2; x++) {
  3027. new = term.line[y][x];
  3028. if(new.mode == ATTR_WDUMMY)
  3029. continue;
  3030. if(ena_sel && selected(x, y))
  3031. new.mode ^= ATTR_REVERSE;
  3032. if(ib > 0 && (ATTRCMP(base, new)
  3033. || ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
  3034. xdraws(buf, base, ox, y, ic, ib);
  3035. ic = ib = 0;
  3036. }
  3037. if(ib == 0) {
  3038. ox = x;
  3039. base = new;
  3040. }
  3041. sl = utf8decode(new.c, &u8char);
  3042. memcpy(buf+ib, new.c, sl);
  3043. ib += sl;
  3044. ic += (new.mode & ATTR_WIDE)? 2 : 1;
  3045. }
  3046. if(ib > 0)
  3047. xdraws(buf, base, ox, y, ic, ib);
  3048. }
  3049. xdrawcursor();
  3050. }
  3051. void
  3052. expose(XEvent *ev) {
  3053. XExposeEvent *e = &ev->xexpose;
  3054. if(xw.state & WIN_REDRAW) {
  3055. if(!e->count)
  3056. xw.state &= ~WIN_REDRAW;
  3057. }
  3058. redraw(0);
  3059. }
  3060. void
  3061. visibility(XEvent *ev) {
  3062. XVisibilityEvent *e = &ev->xvisibility;
  3063. if(e->state == VisibilityFullyObscured) {
  3064. xw.state &= ~WIN_VISIBLE;
  3065. } else if(!(xw.state & WIN_VISIBLE)) {
  3066. /* need a full redraw for next Expose, not just a buf copy */
  3067. xw.state |= WIN_VISIBLE | WIN_REDRAW;
  3068. }
  3069. }
  3070. void
  3071. unmap(XEvent *ev) {
  3072. xw.state &= ~WIN_VISIBLE;
  3073. }
  3074. void
  3075. xsetpointermotion(int set) {
  3076. MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
  3077. XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
  3078. }
  3079. void
  3080. xseturgency(int add) {
  3081. XWMHints *h = XGetWMHints(xw.dpy, xw.win);
  3082. h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
  3083. XSetWMHints(xw.dpy, xw.win, h);
  3084. XFree(h);
  3085. }
  3086. void
  3087. focus(XEvent *ev) {
  3088. XFocusChangeEvent *e = &ev->xfocus;
  3089. if(e->mode == NotifyGrab)
  3090. return;
  3091. if(ev->type == FocusIn) {
  3092. XSetICFocus(xw.xic);
  3093. xw.state |= WIN_FOCUSED;
  3094. xseturgency(0);
  3095. if(IS_SET(MODE_FOCUS))
  3096. ttywrite("\033[I", 3);
  3097. } else {
  3098. XUnsetICFocus(xw.xic);
  3099. xw.state &= ~WIN_FOCUSED;
  3100. if(IS_SET(MODE_FOCUS))
  3101. ttywrite("\033[O", 3);
  3102. }
  3103. }
  3104. static inline bool
  3105. match(uint mask, uint state) {
  3106. state &= ~ignoremod;
  3107. if(mask == XK_NO_MOD && state)
  3108. return false;
  3109. if(mask != XK_ANY_MOD && mask != XK_NO_MOD && !state)
  3110. return false;
  3111. if(mask == XK_ANY_MOD)
  3112. return true;
  3113. return state == mask;
  3114. }
  3115. void
  3116. numlock(const Arg *dummy) {
  3117. term.numlock ^= 1;
  3118. }
  3119. char*
  3120. kmap(KeySym k, uint state) {
  3121. Key *kp;
  3122. int i;
  3123. /* Check for mapped keys out of X11 function keys. */
  3124. for(i = 0; i < LEN(mappedkeys); i++) {
  3125. if(mappedkeys[i] == k)
  3126. break;
  3127. }
  3128. if(i == LEN(mappedkeys)) {
  3129. if((k & 0xFFFF) < 0xFD00)
  3130. return NULL;
  3131. }
  3132. for(kp = key; kp < key + LEN(key); kp++) {
  3133. if(kp->k != k)
  3134. continue;
  3135. if(!match(kp->mask, state))
  3136. continue;
  3137. if(kp->appkey > 0) {
  3138. if(!IS_SET(MODE_APPKEYPAD))
  3139. continue;
  3140. if(term.numlock && kp->appkey == 2)
  3141. continue;
  3142. } else if(kp->appkey < 0 && IS_SET(MODE_APPKEYPAD)) {
  3143. continue;
  3144. }
  3145. if((kp->appcursor < 0 && IS_SET(MODE_APPCURSOR)) ||
  3146. (kp->appcursor > 0
  3147. && !IS_SET(MODE_APPCURSOR))) {
  3148. continue;
  3149. }
  3150. if((kp->crlf < 0 && IS_SET(MODE_CRLF)) ||
  3151. (kp->crlf > 0 && !IS_SET(MODE_CRLF))) {
  3152. continue;
  3153. }
  3154. return kp->s;
  3155. }
  3156. return NULL;
  3157. }
  3158. void
  3159. kpress(XEvent *ev) {
  3160. XKeyEvent *e = &ev->xkey;
  3161. KeySym ksym;
  3162. char buf[32], *customkey;
  3163. int len;
  3164. long c;
  3165. Status status;
  3166. Shortcut *bp;
  3167. if(IS_SET(MODE_KBDLOCK))
  3168. return;
  3169. len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
  3170. e->state &= ~Mod2Mask;
  3171. /* 1. shortcuts */
  3172. for(bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
  3173. if(ksym == bp->keysym && match(bp->mod, e->state)) {
  3174. bp->func(&(bp->arg));
  3175. return;
  3176. }
  3177. }
  3178. /* 2. custom keys from config.h */
  3179. if((customkey = kmap(ksym, e->state))) {
  3180. len = strlen(customkey);
  3181. ttywrite(customkey, len);
  3182. if(IS_SET(MODE_ECHO))
  3183. techo(customkey, len);
  3184. return;
  3185. }
  3186. /* 3. composed string from input method */
  3187. if(len == 0)
  3188. return;
  3189. if(len == 1 && e->state & Mod1Mask) {
  3190. if(IS_SET(MODE_8BIT)) {
  3191. if(*buf < 0177) {
  3192. c = *buf | 0x80;
  3193. len = utf8encode(&c, buf);
  3194. }
  3195. } else {
  3196. buf[1] = buf[0];
  3197. buf[0] = '\033';
  3198. len = 2;
  3199. }
  3200. }
  3201. ttywrite(buf, len);
  3202. if(IS_SET(MODE_ECHO))
  3203. techo(buf, len);
  3204. }
  3205. void
  3206. cmessage(XEvent *e) {
  3207. /*
  3208. * See xembed specs
  3209. * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
  3210. */
  3211. if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
  3212. if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
  3213. xw.state |= WIN_FOCUSED;
  3214. xseturgency(0);
  3215. } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
  3216. xw.state &= ~WIN_FOCUSED;
  3217. }
  3218. } else if(e->xclient.data.l[0] == xw.wmdeletewin) {
  3219. /* Send SIGHUP to shell */
  3220. kill(pid, SIGHUP);
  3221. exit(EXIT_SUCCESS);
  3222. }
  3223. }
  3224. void
  3225. cresize(int width, int height) {
  3226. int col, row;
  3227. if(width != 0)
  3228. xw.w = width;
  3229. if(height != 0)
  3230. xw.h = height;
  3231. col = (xw.w - 2 * borderpx) / xw.cw;
  3232. row = (xw.h - 2 * borderpx) / xw.ch;
  3233. tresize(col, row);
  3234. xresize(col, row);
  3235. ttyresize();
  3236. }
  3237. void
  3238. resize(XEvent *e) {
  3239. if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
  3240. return;
  3241. cresize(e->xconfigure.width, e->xconfigure.height);
  3242. }
  3243. void
  3244. run(void) {
  3245. XEvent ev;
  3246. int w = xw.w, h = xw.h;
  3247. fd_set rfd;
  3248. int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
  3249. struct timeval drawtimeout, *tv = NULL, now, last, lastblink;
  3250. /* Waiting for window mapping */
  3251. while(1) {
  3252. XNextEvent(xw.dpy, &ev);
  3253. if(ev.type == ConfigureNotify) {
  3254. w = ev.xconfigure.width;
  3255. h = ev.xconfigure.height;
  3256. } else if(ev.type == MapNotify) {
  3257. break;
  3258. }
  3259. }
  3260. if(!xw.isfixed)
  3261. cresize(w, h);
  3262. else
  3263. cresize(xw.fw, xw.fh);
  3264. ttynew();
  3265. gettimeofday(&lastblink, NULL);
  3266. gettimeofday(&last, NULL);
  3267. for(xev = actionfps;;) {
  3268. FD_ZERO(&rfd);
  3269. FD_SET(cmdfd, &rfd);
  3270. FD_SET(xfd, &rfd);
  3271. if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv) < 0) {
  3272. if(errno == EINTR)
  3273. continue;
  3274. die("select failed: %s\n", SERRNO);
  3275. }
  3276. if(FD_ISSET(cmdfd, &rfd)) {
  3277. ttyread();
  3278. if(blinktimeout) {
  3279. blinkset = tattrset(ATTR_BLINK);
  3280. if(!blinkset)
  3281. MODBIT(term.mode, 0, MODE_BLINK);
  3282. }
  3283. }
  3284. if(FD_ISSET(xfd, &rfd))
  3285. xev = actionfps;
  3286. gettimeofday(&now, NULL);
  3287. drawtimeout.tv_sec = 0;
  3288. drawtimeout.tv_usec = (1000/xfps) * 1000;
  3289. tv = &drawtimeout;
  3290. dodraw = 0;
  3291. if(blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
  3292. tsetdirtattr(ATTR_BLINK);
  3293. term.mode ^= MODE_BLINK;
  3294. gettimeofday(&lastblink, NULL);
  3295. dodraw = 1;
  3296. }
  3297. if(TIMEDIFF(now, last) \
  3298. > (xev? (1000/xfps) : (1000/actionfps))) {
  3299. dodraw = 1;
  3300. last = now;
  3301. }
  3302. if(dodraw) {
  3303. while(XPending(xw.dpy)) {
  3304. XNextEvent(xw.dpy, &ev);
  3305. if(XFilterEvent(&ev, None))
  3306. continue;
  3307. if(handler[ev.type])
  3308. (handler[ev.type])(&ev);
  3309. }
  3310. draw();
  3311. XFlush(xw.dpy);
  3312. if(xev && !FD_ISSET(xfd, &rfd))
  3313. xev--;
  3314. if(!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
  3315. if(blinkset) {
  3316. if(TIMEDIFF(now, lastblink) \
  3317. > blinktimeout) {
  3318. drawtimeout.tv_usec = 1;
  3319. } else {
  3320. drawtimeout.tv_usec = (1000 * \
  3321. (blinktimeout - \
  3322. TIMEDIFF(now,
  3323. lastblink)));
  3324. }
  3325. } else {
  3326. tv = NULL;
  3327. }
  3328. }
  3329. }
  3330. }
  3331. }
  3332. void
  3333. usage(void) {
  3334. die("%s " VERSION " (c) 2010-2013 st engineers\n" \
  3335. "usage: st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]" \
  3336. " [-t title] [-w windowid] [-e command ...]\n", argv0);
  3337. }
  3338. int
  3339. main(int argc, char *argv[]) {
  3340. int bitm, xr, yr;
  3341. uint wr, hr;
  3342. char *titles;
  3343. xw.fw = xw.fh = xw.fx = xw.fy = 0;
  3344. xw.isfixed = False;
  3345. ARGBEGIN {
  3346. case 'a':
  3347. allowaltscreen = false;
  3348. break;
  3349. case 'c':
  3350. opt_class = EARGF(usage());
  3351. break;
  3352. case 'e':
  3353. /* eat all remaining arguments */
  3354. if(argc > 1) {
  3355. opt_cmd = &argv[1];
  3356. if(argv[1] != NULL && opt_title == NULL) {
  3357. titles = strdup(argv[1]);
  3358. opt_title = basename(titles);
  3359. }
  3360. }
  3361. goto run;
  3362. case 'f':
  3363. opt_font = EARGF(usage());
  3364. break;
  3365. case 'g':
  3366. bitm = XParseGeometry(EARGF(usage()), &xr, &yr, &wr, &hr);
  3367. if(bitm & XValue)
  3368. xw.fx = xr;
  3369. if(bitm & YValue)
  3370. xw.fy = yr;
  3371. if(bitm & WidthValue)
  3372. xw.fw = (int)wr;
  3373. if(bitm & HeightValue)
  3374. xw.fh = (int)hr;
  3375. if(bitm & XNegative && xw.fx == 0)
  3376. xw.fx = -1;
  3377. if(bitm & YNegative && xw.fy == 0)
  3378. xw.fy = -1;
  3379. if(xw.fh != 0 && xw.fw != 0)
  3380. xw.isfixed = True;
  3381. break;
  3382. case 'o':
  3383. opt_io = EARGF(usage());
  3384. break;
  3385. case 't':
  3386. opt_title = EARGF(usage());
  3387. break;
  3388. case 'w':
  3389. opt_embed = EARGF(usage());
  3390. break;
  3391. case 'v':
  3392. default:
  3393. usage();
  3394. } ARGEND;
  3395. run:
  3396. setlocale(LC_CTYPE, "");
  3397. XSetLocaleModifiers("");
  3398. tnew(80, 24);
  3399. xinit();
  3400. selinit();
  3401. run();
  3402. return 0;
  3403. }