st.c 61 KB

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  1. /* See LICENSE for licence details. */
  2. #define _XOPEN_SOURCE 600
  3. #include <ctype.h>
  4. #include <errno.h>
  5. #include <fcntl.h>
  6. #include <limits.h>
  7. #include <locale.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 <X11/Xatom.h>
  23. #include <X11/Xlib.h>
  24. #include <X11/Xutil.h>
  25. #include <X11/cursorfont.h>
  26. #include <X11/keysym.h>
  27. #include <X11/extensions/Xdbe.h>
  28. #include <X11/Xft/Xft.h>
  29. #include <fontconfig/fontconfig.h>
  30. #define Glyph Glyph_
  31. #define Font Font_
  32. #if defined(__linux)
  33. #include <pty.h>
  34. #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
  35. #include <util.h>
  36. #elif defined(__FreeBSD__) || defined(__DragonFly__)
  37. #include <libutil.h>
  38. #endif
  39. #define USAGE \
  40. "st " VERSION " (c) 2010-2012 st engineers\n" \
  41. "usage: st [-v] [-c class] [-f font] [-g geometry] [-o file]" \
  42. " [-t title] [-w windowid] [-e command ...]\n"
  43. /* XEMBED messages */
  44. #define XEMBED_FOCUS_IN 4
  45. #define XEMBED_FOCUS_OUT 5
  46. /* Arbitrary sizes */
  47. #define ESC_BUF_SIZ 256
  48. #define ESC_ARG_SIZ 16
  49. #define STR_BUF_SIZ 256
  50. #define STR_ARG_SIZ 16
  51. #define DRAW_BUF_SIZ 20*1024
  52. #define UTF_SIZ 4
  53. #define XK_NO_MOD UINT_MAX
  54. #define XK_ANY_MOD 0
  55. #define REDRAW_TIMEOUT (80*1000) /* 80 ms */
  56. #define SERRNO strerror(errno)
  57. #define MIN(a, b) ((a) < (b) ? (a) : (b))
  58. #define MAX(a, b) ((a) < (b) ? (b) : (a))
  59. #define LEN(a) (sizeof(a) / sizeof(a[0]))
  60. #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
  61. #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
  62. #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
  63. #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
  64. #define IS_SET(flag) (term.mode & (flag))
  65. #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000)
  66. #define X2COL(x) (((x) - BORDER)/xw.cw)
  67. #define Y2ROW(y) (((y) - BORDER)/xw.ch)
  68. #define VT102ID "\033[?6c"
  69. enum glyph_attribute {
  70. ATTR_NULL = 0,
  71. ATTR_REVERSE = 1,
  72. ATTR_UNDERLINE = 2,
  73. ATTR_BOLD = 4,
  74. ATTR_GFX = 8,
  75. ATTR_ITALIC = 16,
  76. ATTR_BLINK = 32,
  77. };
  78. enum cursor_movement {
  79. CURSOR_UP,
  80. CURSOR_DOWN,
  81. CURSOR_LEFT,
  82. CURSOR_RIGHT,
  83. CURSOR_SAVE,
  84. CURSOR_LOAD
  85. };
  86. enum cursor_state {
  87. CURSOR_DEFAULT = 0,
  88. CURSOR_HIDE = 1,
  89. CURSOR_WRAPNEXT = 2
  90. };
  91. enum glyph_state {
  92. GLYPH_SET = 1,
  93. GLYPH_DIRTY = 2
  94. };
  95. enum term_mode {
  96. MODE_WRAP = 1,
  97. MODE_INSERT = 2,
  98. MODE_APPKEYPAD = 4,
  99. MODE_ALTSCREEN = 8,
  100. MODE_CRLF = 16,
  101. MODE_MOUSEBTN = 32,
  102. MODE_MOUSEMOTION = 64,
  103. MODE_MOUSE = 32|64,
  104. MODE_REVERSE = 128,
  105. MODE_KBDLOCK = 256
  106. };
  107. enum escape_state {
  108. ESC_START = 1,
  109. ESC_CSI = 2,
  110. ESC_STR = 4, /* DSC, OSC, PM, APC */
  111. ESC_ALTCHARSET = 8,
  112. ESC_STR_END = 16, /* a final string was encountered */
  113. ESC_TEST = 32, /* Enter in test mode */
  114. };
  115. enum window_state {
  116. WIN_VISIBLE = 1,
  117. WIN_REDRAW = 2,
  118. WIN_FOCUSED = 4
  119. };
  120. /* bit macro */
  121. #undef B0
  122. enum { B0=1, B1=2, B2=4, B3=8, B4=16, B5=32, B6=64, B7=128 };
  123. typedef unsigned char uchar;
  124. typedef unsigned int uint;
  125. typedef unsigned long ulong;
  126. typedef unsigned short ushort;
  127. typedef struct {
  128. char c[UTF_SIZ]; /* character code */
  129. uchar mode; /* attribute flags */
  130. ushort fg; /* foreground */
  131. ushort bg; /* background */
  132. uchar state; /* state flags */
  133. } Glyph;
  134. typedef Glyph* Line;
  135. typedef struct {
  136. Glyph attr; /* current char attributes */
  137. int x;
  138. int y;
  139. char state;
  140. } TCursor;
  141. /* CSI Escape sequence structs */
  142. /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
  143. typedef struct {
  144. char buf[ESC_BUF_SIZ]; /* raw string */
  145. int len; /* raw string length */
  146. char priv;
  147. int arg[ESC_ARG_SIZ];
  148. int narg; /* nb of args */
  149. char mode;
  150. } CSIEscape;
  151. /* STR Escape sequence structs */
  152. /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
  153. typedef struct {
  154. char type; /* ESC type ... */
  155. char buf[STR_BUF_SIZ]; /* raw string */
  156. int len; /* raw string length */
  157. char *args[STR_ARG_SIZ];
  158. int narg; /* nb of args */
  159. } STREscape;
  160. /* Internal representation of the screen */
  161. typedef struct {
  162. int row; /* nb row */
  163. int col; /* nb col */
  164. Line *line; /* screen */
  165. Line *alt; /* alternate screen */
  166. bool *dirty; /* dirtyness of lines */
  167. TCursor c; /* cursor */
  168. int top; /* top scroll limit */
  169. int bot; /* bottom scroll limit */
  170. int mode; /* terminal mode flags */
  171. int esc; /* escape state flags */
  172. bool *tabs;
  173. } Term;
  174. /* Purely graphic info */
  175. typedef struct {
  176. Display* dpy;
  177. Colormap cmap;
  178. Window win;
  179. XdbeBackBuffer buf;
  180. Atom xembed, wmdeletewin;
  181. XIM xim;
  182. XIC xic;
  183. XftDraw *xft_draw;
  184. Visual *vis;
  185. int scr;
  186. bool isfixed; /* is fixed geometry? */
  187. int fx, fy, fw, fh; /* fixed geometry */
  188. int tw, th; /* tty width and height */
  189. int w; /* window width */
  190. int h; /* window height */
  191. int ch; /* char height */
  192. int cw; /* char width */
  193. char state; /* focus, redraw, visible */
  194. } XWindow;
  195. typedef struct {
  196. KeySym k;
  197. uint mask;
  198. char s[ESC_BUF_SIZ];
  199. } Key;
  200. /* TODO: use better name for vars... */
  201. typedef struct {
  202. int mode;
  203. int bx, by;
  204. int ex, ey;
  205. struct {
  206. int x, y;
  207. } b, e;
  208. char *clip;
  209. Atom xtarget;
  210. bool alt;
  211. struct timeval tclick1;
  212. struct timeval tclick2;
  213. } Selection;
  214. #include "config.h"
  215. /* Font structure */
  216. typedef struct {
  217. int height;
  218. int width;
  219. int ascent;
  220. int descent;
  221. short lbearing;
  222. short rbearing;
  223. XftFont *xft_set;
  224. } Font;
  225. /* Drawing Context */
  226. typedef struct {
  227. XftColor xft_col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
  228. GC gc;
  229. Font font, bfont, ifont, ibfont;
  230. } DC;
  231. static void die(const char *, ...);
  232. static void draw(void);
  233. static void redraw(void);
  234. static void drawregion(int, int, int, int);
  235. static void execsh(void);
  236. static void sigchld(int);
  237. static void run(void);
  238. static void csidump(void);
  239. static void csihandle(void);
  240. static void csiparse(void);
  241. static void csireset(void);
  242. static void strdump(void);
  243. static void strhandle(void);
  244. static void strparse(void);
  245. static void strreset(void);
  246. static void tclearregion(int, int, int, int);
  247. static void tcursor(int);
  248. static void tdeletechar(int);
  249. static void tdeleteline(int);
  250. static void tinsertblank(int);
  251. static void tinsertblankline(int);
  252. static void tmoveto(int, int);
  253. static void tnew(int, int);
  254. static void tnewline(int);
  255. static void tputtab(bool);
  256. static void tputc(char *, int);
  257. static void treset(void);
  258. static int tresize(int, int);
  259. static void tscrollup(int, int);
  260. static void tscrolldown(int, int);
  261. static void tsetattr(int*, int);
  262. static void tsetchar(char *, Glyph *, int, int);
  263. static void tsetscroll(int, int);
  264. static void tswapscreen(void);
  265. static void tsetdirt(int, int);
  266. static void tsetmode(bool, bool, int *, int);
  267. static void tfulldirt(void);
  268. static void ttynew(void);
  269. static void ttyread(void);
  270. static void ttyresize(void);
  271. static void ttywrite(const char *, size_t);
  272. static void xdraws(char *, Glyph, int, int, int, int);
  273. static void xhints(void);
  274. static void xclear(int, int, int, int);
  275. static void xdrawcursor(void);
  276. static void xinit(void);
  277. static void xloadcols(void);
  278. static void xresettitle(void);
  279. static void xseturgency(int);
  280. static void xsetsel(char*);
  281. static void xtermclear(int, int, int, int);
  282. static void xresize(int, int);
  283. static void expose(XEvent *);
  284. static void visibility(XEvent *);
  285. static void unmap(XEvent *);
  286. static char *kmap(KeySym, uint);
  287. static void kpress(XEvent *);
  288. static void cmessage(XEvent *);
  289. static void resize(XEvent *);
  290. static void focus(XEvent *);
  291. static void brelease(XEvent *);
  292. static void bpress(XEvent *);
  293. static void bmotion(XEvent *);
  294. static void selnotify(XEvent *);
  295. static void selclear(XEvent *);
  296. static void selrequest(XEvent *);
  297. static void selinit(void);
  298. static inline bool selected(int, int);
  299. static void selcopy(void);
  300. static void selpaste(void);
  301. static void selscroll(int, int);
  302. static int utf8decode(char *, long *);
  303. static int utf8encode(long *, char *);
  304. static int utf8size(char *);
  305. static int isfullutf8(char *, int);
  306. static void *xmalloc(size_t);
  307. static void *xrealloc(void *, size_t);
  308. static void *xcalloc(size_t nmemb, size_t size);
  309. static char *smstrcat(char *, ...);
  310. static void (*handler[LASTEvent])(XEvent *) = {
  311. [KeyPress] = kpress,
  312. [ClientMessage] = cmessage,
  313. [ConfigureNotify] = resize,
  314. [VisibilityNotify] = visibility,
  315. [UnmapNotify] = unmap,
  316. [Expose] = expose,
  317. [FocusIn] = focus,
  318. [FocusOut] = focus,
  319. [MotionNotify] = bmotion,
  320. [ButtonPress] = bpress,
  321. [ButtonRelease] = brelease,
  322. [SelectionClear] = selclear,
  323. [SelectionNotify] = selnotify,
  324. [SelectionRequest] = selrequest,
  325. };
  326. /* Globals */
  327. static DC dc;
  328. static XWindow xw;
  329. static Term term;
  330. static CSIEscape csiescseq;
  331. static STREscape strescseq;
  332. static int cmdfd;
  333. static pid_t pid;
  334. static Selection sel;
  335. static int iofd = -1;
  336. static char **opt_cmd = NULL;
  337. static char *opt_io = NULL;
  338. static char *opt_title = NULL;
  339. static char *opt_embed = NULL;
  340. static char *opt_class = NULL;
  341. static char *opt_font = NULL;
  342. void *
  343. xmalloc(size_t len) {
  344. void *p = malloc(len);
  345. if(!p)
  346. die("Out of memory\n");
  347. return p;
  348. }
  349. void *
  350. xrealloc(void *p, size_t len) {
  351. if((p = realloc(p, len)) == NULL)
  352. die("Out of memory\n");
  353. return p;
  354. }
  355. void *
  356. xcalloc(size_t nmemb, size_t size) {
  357. void *p = calloc(nmemb, size);
  358. if(!p)
  359. die("Out of memory\n");
  360. return p;
  361. }
  362. char *
  363. smstrcat(char *src, ...)
  364. {
  365. va_list fmtargs;
  366. char *ret, *p, *v;
  367. int len, slen, flen;
  368. len = slen = strlen(src);
  369. va_start(fmtargs, src);
  370. for(;;) {
  371. v = va_arg(fmtargs, char *);
  372. if(v == NULL)
  373. break;
  374. len += strlen(v);
  375. }
  376. va_end(fmtargs);
  377. p = ret = xmalloc(len+1);
  378. memmove(p, src, slen);
  379. p += slen;
  380. va_start(fmtargs, src);
  381. for(;;) {
  382. v = va_arg(fmtargs, char *);
  383. if(v == NULL)
  384. break;
  385. flen = strlen(v);
  386. memmove(p, v, flen);
  387. p += flen;
  388. }
  389. va_end(fmtargs);
  390. ret[len] = '\0';
  391. return ret;
  392. }
  393. int
  394. utf8decode(char *s, long *u) {
  395. uchar c;
  396. int i, n, rtn;
  397. rtn = 1;
  398. c = *s;
  399. if(~c & B7) { /* 0xxxxxxx */
  400. *u = c;
  401. return rtn;
  402. } else if((c & (B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */
  403. *u = c&(B4|B3|B2|B1|B0);
  404. n = 1;
  405. } else if((c & (B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */
  406. *u = c&(B3|B2|B1|B0);
  407. n = 2;
  408. } else if((c & (B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */
  409. *u = c & (B2|B1|B0);
  410. n = 3;
  411. } else {
  412. goto invalid;
  413. }
  414. for(i = n, ++s; i > 0; --i, ++rtn, ++s) {
  415. c = *s;
  416. if((c & (B7|B6)) != B7) /* 10xxxxxx */
  417. goto invalid;
  418. *u <<= 6;
  419. *u |= c & (B5|B4|B3|B2|B1|B0);
  420. }
  421. if((n == 1 && *u < 0x80) ||
  422. (n == 2 && *u < 0x800) ||
  423. (n == 3 && *u < 0x10000) ||
  424. (*u >= 0xD800 && *u <= 0xDFFF)) {
  425. goto invalid;
  426. }
  427. return rtn;
  428. invalid:
  429. *u = 0xFFFD;
  430. return rtn;
  431. }
  432. int
  433. utf8encode(long *u, char *s) {
  434. uchar *sp;
  435. ulong uc;
  436. int i, n;
  437. sp = (uchar *)s;
  438. uc = *u;
  439. if(uc < 0x80) {
  440. *sp = uc; /* 0xxxxxxx */
  441. return 1;
  442. } else if(*u < 0x800) {
  443. *sp = (uc >> 6) | (B7|B6); /* 110xxxxx */
  444. n = 1;
  445. } else if(uc < 0x10000) {
  446. *sp = (uc >> 12) | (B7|B6|B5); /* 1110xxxx */
  447. n = 2;
  448. } else if(uc <= 0x10FFFF) {
  449. *sp = (uc >> 18) | (B7|B6|B5|B4); /* 11110xxx */
  450. n = 3;
  451. } else {
  452. goto invalid;
  453. }
  454. for(i=n,++sp; i>0; --i,++sp)
  455. *sp = ((uc >> 6*(i-1)) & (B5|B4|B3|B2|B1|B0)) | B7; /* 10xxxxxx */
  456. return n+1;
  457. invalid:
  458. /* U+FFFD */
  459. *s++ = '\xEF';
  460. *s++ = '\xBF';
  461. *s = '\xBD';
  462. return 3;
  463. }
  464. /* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode
  465. UTF-8 otherwise return 0 */
  466. int
  467. isfullutf8(char *s, int b) {
  468. uchar *c1, *c2, *c3;
  469. c1 = (uchar *)s;
  470. c2 = (uchar *)++s;
  471. c3 = (uchar *)++s;
  472. if(b < 1) {
  473. return 0;
  474. } else if((*c1&(B7|B6|B5)) == (B7|B6) && b == 1) {
  475. return 0;
  476. } else if((*c1&(B7|B6|B5|B4)) == (B7|B6|B5) &&
  477. ((b == 1) ||
  478. ((b == 2) && (*c2&(B7|B6)) == B7))) {
  479. return 0;
  480. } else if((*c1&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4) &&
  481. ((b == 1) ||
  482. ((b == 2) && (*c2&(B7|B6)) == B7) ||
  483. ((b == 3) && (*c2&(B7|B6)) == B7 && (*c3&(B7|B6)) == B7))) {
  484. return 0;
  485. } else {
  486. return 1;
  487. }
  488. }
  489. int
  490. utf8size(char *s) {
  491. uchar c = *s;
  492. if(~c&B7) {
  493. return 1;
  494. } else if((c&(B7|B6|B5)) == (B7|B6)) {
  495. return 2;
  496. } else if((c&(B7|B6|B5|B4)) == (B7|B6|B5)) {
  497. return 3;
  498. } else {
  499. return 4;
  500. }
  501. }
  502. void
  503. selinit(void) {
  504. memset(&sel.tclick1, 0, sizeof(sel.tclick1));
  505. memset(&sel.tclick2, 0, sizeof(sel.tclick2));
  506. sel.mode = 0;
  507. sel.bx = -1;
  508. sel.clip = NULL;
  509. sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
  510. if(sel.xtarget == None)
  511. sel.xtarget = XA_STRING;
  512. }
  513. static inline bool
  514. selected(int x, int y) {
  515. int bx, ex;
  516. if(sel.ey == y && sel.by == y) {
  517. bx = MIN(sel.bx, sel.ex);
  518. ex = MAX(sel.bx, sel.ex);
  519. return BETWEEN(x, bx, ex);
  520. }
  521. return ((sel.b.y < y && y < sel.e.y)
  522. || (y == sel.e.y && x <= sel.e.x))
  523. || (y == sel.b.y && x >= sel.b.x
  524. && (x <= sel.e.x || sel.b.y != sel.e.y));
  525. }
  526. void
  527. getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
  528. if(b)
  529. *b = e->xbutton.button;
  530. *x = X2COL(e->xbutton.x);
  531. *y = Y2ROW(e->xbutton.y);
  532. sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
  533. sel.b.y = MIN(sel.by, sel.ey);
  534. sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
  535. sel.e.y = MAX(sel.by, sel.ey);
  536. }
  537. void
  538. mousereport(XEvent *e) {
  539. int x = X2COL(e->xbutton.x);
  540. int y = Y2ROW(e->xbutton.y);
  541. int button = e->xbutton.button;
  542. int state = e->xbutton.state;
  543. char buf[] = { '\033', '[', 'M', 0, 32+x+1, 32+y+1 };
  544. static int ob, ox, oy;
  545. /* from urxvt */
  546. if(e->xbutton.type == MotionNotify) {
  547. if(!IS_SET(MODE_MOUSEMOTION) || (x == ox && y == oy))
  548. return;
  549. button = ob + 32;
  550. ox = x, oy = y;
  551. } else if(e->xbutton.type == ButtonRelease || button == AnyButton) {
  552. button = 3;
  553. } else {
  554. button -= Button1;
  555. if(button >= 3)
  556. button += 64 - 3;
  557. if(e->xbutton.type == ButtonPress) {
  558. ob = button;
  559. ox = x, oy = y;
  560. }
  561. }
  562. buf[3] = 32 + button + (state & ShiftMask ? 4 : 0)
  563. + (state & Mod4Mask ? 8 : 0)
  564. + (state & ControlMask ? 16 : 0);
  565. ttywrite(buf, sizeof(buf));
  566. }
  567. void
  568. bpress(XEvent *e) {
  569. if(IS_SET(MODE_MOUSE)) {
  570. mousereport(e);
  571. } else if(e->xbutton.button == Button1) {
  572. if(sel.bx != -1) {
  573. sel.bx = -1;
  574. tsetdirt(sel.b.y, sel.e.y);
  575. draw();
  576. }
  577. sel.mode = 1;
  578. sel.ex = sel.bx = X2COL(e->xbutton.x);
  579. sel.ey = sel.by = Y2ROW(e->xbutton.y);
  580. }
  581. }
  582. void
  583. selcopy(void) {
  584. char *str, *ptr, *p;
  585. int x, y, bufsize, is_selected = 0, size;
  586. Glyph *gp;
  587. if(sel.bx == -1) {
  588. str = NULL;
  589. } else {
  590. bufsize = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
  591. ptr = str = xmalloc(bufsize);
  592. /* append every set & selected glyph to the selection */
  593. for(y = 0; y < term.row; y++) {
  594. for(x = 0; x < term.col; x++) {
  595. gp = &term.line[y][x];
  596. if(!(is_selected = selected(x, y)))
  597. continue;
  598. p = (gp->state & GLYPH_SET) ? gp->c : " ";
  599. size = utf8size(p);
  600. memcpy(ptr, p, size);
  601. ptr += size;
  602. }
  603. /* \n at the end of every selected line except for the last one */
  604. if(is_selected && y < sel.e.y)
  605. *ptr++ = '\n';
  606. }
  607. *ptr = 0;
  608. }
  609. sel.alt = IS_SET(MODE_ALTSCREEN);
  610. xsetsel(str);
  611. }
  612. void
  613. selnotify(XEvent *e) {
  614. ulong nitems, ofs, rem;
  615. int format;
  616. uchar *data;
  617. Atom type;
  618. ofs = 0;
  619. do {
  620. if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
  621. False, AnyPropertyType, &type, &format,
  622. &nitems, &rem, &data)) {
  623. fprintf(stderr, "Clipboard allocation failed\n");
  624. return;
  625. }
  626. ttywrite((const char *) data, nitems * format / 8);
  627. XFree(data);
  628. /* number of 32-bit chunks returned */
  629. ofs += nitems * format / 32;
  630. } while(rem > 0);
  631. }
  632. void
  633. selpaste(void) {
  634. XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
  635. xw.win, CurrentTime);
  636. }
  637. void selclear(XEvent *e) {
  638. if(sel.bx == -1)
  639. return;
  640. sel.bx = -1;
  641. tsetdirt(sel.b.y, sel.e.y);
  642. }
  643. void
  644. selrequest(XEvent *e) {
  645. XSelectionRequestEvent *xsre;
  646. XSelectionEvent xev;
  647. Atom xa_targets, string;
  648. xsre = (XSelectionRequestEvent *) e;
  649. xev.type = SelectionNotify;
  650. xev.requestor = xsre->requestor;
  651. xev.selection = xsre->selection;
  652. xev.target = xsre->target;
  653. xev.time = xsre->time;
  654. /* reject */
  655. xev.property = None;
  656. xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
  657. if(xsre->target == xa_targets) {
  658. /* respond with the supported type */
  659. string = sel.xtarget;
  660. XChangeProperty(xsre->display, xsre->requestor, xsre->property,
  661. XA_ATOM, 32, PropModeReplace,
  662. (uchar *) &string, 1);
  663. xev.property = xsre->property;
  664. } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
  665. XChangeProperty(xsre->display, xsre->requestor, xsre->property,
  666. xsre->target, 8, PropModeReplace,
  667. (uchar *) sel.clip, strlen(sel.clip));
  668. xev.property = xsre->property;
  669. }
  670. /* all done, send a notification to the listener */
  671. if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
  672. fprintf(stderr, "Error sending SelectionNotify event\n");
  673. }
  674. void
  675. xsetsel(char *str) {
  676. /* register the selection for both the clipboard and the primary */
  677. Atom clipboard;
  678. free(sel.clip);
  679. sel.clip = str;
  680. XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
  681. clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
  682. XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
  683. }
  684. void
  685. brelease(XEvent *e) {
  686. struct timeval now;
  687. if(IS_SET(MODE_MOUSE)) {
  688. mousereport(e);
  689. return;
  690. }
  691. if(e->xbutton.button == Button2) {
  692. selpaste();
  693. } else if(e->xbutton.button == Button1) {
  694. sel.mode = 0;
  695. getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
  696. term.dirty[sel.ey] = 1;
  697. if(sel.bx == sel.ex && sel.by == sel.ey) {
  698. sel.bx = -1;
  699. gettimeofday(&now, NULL);
  700. if(TIMEDIFF(now, sel.tclick2) <= TRIPLECLICK_TIMEOUT) {
  701. /* triple click on the line */
  702. sel.b.x = sel.bx = 0;
  703. sel.e.x = sel.ex = term.col;
  704. sel.b.y = sel.e.y = sel.ey;
  705. selcopy();
  706. } else if(TIMEDIFF(now, sel.tclick1) <= DOUBLECLICK_TIMEOUT) {
  707. /* double click to select word */
  708. sel.bx = sel.ex;
  709. while(sel.bx > 0 && term.line[sel.ey][sel.bx-1].state & GLYPH_SET &&
  710. term.line[sel.ey][sel.bx-1].c[0] != ' ') {
  711. sel.bx--;
  712. }
  713. sel.b.x = sel.bx;
  714. while(sel.ex < term.col-1 && term.line[sel.ey][sel.ex+1].state & GLYPH_SET &&
  715. term.line[sel.ey][sel.ex+1].c[0] != ' ') {
  716. sel.ex++;
  717. }
  718. sel.e.x = sel.ex;
  719. sel.b.y = sel.e.y = sel.ey;
  720. selcopy();
  721. }
  722. } else {
  723. selcopy();
  724. }
  725. }
  726. memcpy(&sel.tclick2, &sel.tclick1, sizeof(struct timeval));
  727. gettimeofday(&sel.tclick1, NULL);
  728. }
  729. void
  730. bmotion(XEvent *e) {
  731. int starty, endy, oldey, oldex;
  732. if(IS_SET(MODE_MOUSE)) {
  733. mousereport(e);
  734. return;
  735. }
  736. if(sel.mode) {
  737. oldey = sel.ey;
  738. oldex = sel.ex;
  739. getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
  740. if(oldey != sel.ey || oldex != sel.ex) {
  741. starty = MIN(oldey, sel.ey);
  742. endy = MAX(oldey, sel.ey);
  743. tsetdirt(starty, endy);
  744. }
  745. }
  746. }
  747. void
  748. die(const char *errstr, ...) {
  749. va_list ap;
  750. va_start(ap, errstr);
  751. vfprintf(stderr, errstr, ap);
  752. va_end(ap);
  753. exit(EXIT_FAILURE);
  754. }
  755. void
  756. execsh(void) {
  757. char **args;
  758. char *envshell = getenv("SHELL");
  759. if (envshell == NULL)
  760. envshell ="/bin/sh";
  761. unsetenv("COLUMNS");
  762. unsetenv("LINES");
  763. unsetenv("TERMCAP");
  764. signal(SIGCHLD, SIG_DFL);
  765. signal(SIGHUP, SIG_DFL);
  766. signal(SIGINT, SIG_DFL);
  767. signal(SIGQUIT, SIG_DFL);
  768. signal(SIGTERM, SIG_DFL);
  769. signal(SIGALRM, SIG_DFL);
  770. DEFAULT(envshell, SHELL);
  771. putenv("TERM="TNAME);
  772. args = opt_cmd ? opt_cmd : (char*[]){envshell, "-i", NULL};
  773. execvp(args[0], args);
  774. exit(EXIT_FAILURE);
  775. }
  776. void
  777. sigchld(int a) {
  778. int stat = 0;
  779. if(waitpid(pid, &stat, 0) < 0)
  780. die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
  781. if(WIFEXITED(stat)) {
  782. exit(WEXITSTATUS(stat));
  783. } else {
  784. exit(EXIT_FAILURE);
  785. }
  786. }
  787. void
  788. ttynew(void) {
  789. int m, s;
  790. struct winsize w = {term.row, term.col, 0, 0};
  791. /* seems to work fine on linux, openbsd and freebsd */
  792. if(openpty(&m, &s, NULL, NULL, &w) < 0)
  793. die("openpty failed: %s\n", SERRNO);
  794. switch(pid = fork()) {
  795. case -1:
  796. die("fork failed\n");
  797. break;
  798. case 0:
  799. setsid(); /* create a new process group */
  800. dup2(s, STDIN_FILENO);
  801. dup2(s, STDOUT_FILENO);
  802. dup2(s, STDERR_FILENO);
  803. if(ioctl(s, TIOCSCTTY, NULL) < 0)
  804. die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
  805. close(s);
  806. close(m);
  807. execsh();
  808. break;
  809. default:
  810. close(s);
  811. cmdfd = m;
  812. signal(SIGCHLD, sigchld);
  813. if(opt_io) {
  814. if(!strcmp(opt_io, "-")) {
  815. iofd = STDOUT_FILENO;
  816. } else {
  817. if((iofd = open(opt_io, O_WRONLY | O_CREAT, 0666)) < 0) {
  818. fprintf(stderr, "Error opening %s:%s\n",
  819. opt_io, strerror(errno));
  820. }
  821. }
  822. }
  823. }
  824. }
  825. void
  826. dump(char c) {
  827. static int col;
  828. fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
  829. if(++col % 10 == 0)
  830. fprintf(stderr, "\n");
  831. }
  832. void
  833. ttyread(void) {
  834. static char buf[BUFSIZ];
  835. static int buflen = 0;
  836. char *ptr;
  837. char s[UTF_SIZ];
  838. int charsize; /* size of utf8 char in bytes */
  839. long utf8c;
  840. int ret;
  841. /* append read bytes to unprocessed bytes */
  842. if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
  843. die("Couldn't read from shell: %s\n", SERRNO);
  844. /* process every complete utf8 char */
  845. buflen += ret;
  846. ptr = buf;
  847. while(buflen >= UTF_SIZ || isfullutf8(ptr,buflen)) {
  848. charsize = utf8decode(ptr, &utf8c);
  849. utf8encode(&utf8c, s);
  850. tputc(s, charsize);
  851. ptr += charsize;
  852. buflen -= charsize;
  853. }
  854. /* keep any uncomplete utf8 char for the next call */
  855. memmove(buf, ptr, buflen);
  856. }
  857. void
  858. ttywrite(const char *s, size_t n) {
  859. if(write(cmdfd, s, n) == -1)
  860. die("write error on tty: %s\n", SERRNO);
  861. }
  862. void
  863. ttyresize(void) {
  864. struct winsize w;
  865. w.ws_row = term.row;
  866. w.ws_col = term.col;
  867. w.ws_xpixel = xw.tw;
  868. w.ws_ypixel = xw.th;
  869. if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
  870. fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
  871. }
  872. void
  873. tsetdirt(int top, int bot) {
  874. int i;
  875. LIMIT(top, 0, term.row-1);
  876. LIMIT(bot, 0, term.row-1);
  877. for(i = top; i <= bot; i++)
  878. term.dirty[i] = 1;
  879. }
  880. void
  881. tfulldirt(void) {
  882. tsetdirt(0, term.row-1);
  883. }
  884. void
  885. tcursor(int mode) {
  886. static TCursor c;
  887. if(mode == CURSOR_SAVE) {
  888. c = term.c;
  889. } else if(mode == CURSOR_LOAD) {
  890. term.c = c;
  891. tmoveto(c.x, c.y);
  892. }
  893. }
  894. void
  895. treset(void) {
  896. uint i;
  897. term.c = (TCursor){{
  898. .mode = ATTR_NULL,
  899. .fg = DefaultFG,
  900. .bg = DefaultBG
  901. }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
  902. memset(term.tabs, 0, term.col * sizeof(*term.tabs));
  903. for(i = TAB; i < term.col; i += TAB)
  904. term.tabs[i] = 1;
  905. term.top = 0;
  906. term.bot = term.row - 1;
  907. term.mode = MODE_WRAP;
  908. tclearregion(0, 0, term.col-1, term.row-1);
  909. }
  910. void
  911. tnew(int col, int row) {
  912. /* set screen size */
  913. term.row = row;
  914. term.col = col;
  915. term.line = xmalloc(term.row * sizeof(Line));
  916. term.alt = xmalloc(term.row * sizeof(Line));
  917. term.dirty = xmalloc(term.row * sizeof(*term.dirty));
  918. term.tabs = xmalloc(term.col * sizeof(*term.tabs));
  919. for(row = 0; row < term.row; row++) {
  920. term.line[row] = xmalloc(term.col * sizeof(Glyph));
  921. term.alt [row] = xmalloc(term.col * sizeof(Glyph));
  922. term.dirty[row] = 0;
  923. }
  924. memset(term.tabs, 0, term.col * sizeof(*term.tabs));
  925. /* setup screen */
  926. treset();
  927. }
  928. void
  929. tswapscreen(void) {
  930. Line *tmp = term.line;
  931. term.line = term.alt;
  932. term.alt = tmp;
  933. term.mode ^= MODE_ALTSCREEN;
  934. tfulldirt();
  935. }
  936. void
  937. tscrolldown(int orig, int n) {
  938. int i;
  939. Line temp;
  940. LIMIT(n, 0, term.bot-orig+1);
  941. tclearregion(0, term.bot-n+1, term.col-1, term.bot);
  942. for(i = term.bot; i >= orig+n; i--) {
  943. temp = term.line[i];
  944. term.line[i] = term.line[i-n];
  945. term.line[i-n] = temp;
  946. term.dirty[i] = 1;
  947. term.dirty[i-n] = 1;
  948. }
  949. selscroll(orig, n);
  950. }
  951. void
  952. tscrollup(int orig, int n) {
  953. int i;
  954. Line temp;
  955. LIMIT(n, 0, term.bot-orig+1);
  956. tclearregion(0, orig, term.col-1, orig+n-1);
  957. for(i = orig; i <= term.bot-n; i++) {
  958. temp = term.line[i];
  959. term.line[i] = term.line[i+n];
  960. term.line[i+n] = temp;
  961. term.dirty[i] = 1;
  962. term.dirty[i+n] = 1;
  963. }
  964. selscroll(orig, -n);
  965. }
  966. void
  967. selscroll(int orig, int n) {
  968. if(sel.bx == -1)
  969. return;
  970. if(BETWEEN(sel.by, orig, term.bot) || BETWEEN(sel.ey, orig, term.bot)) {
  971. if((sel.by += n) > term.bot || (sel.ey += n) < term.top) {
  972. sel.bx = -1;
  973. return;
  974. }
  975. if(sel.by < term.top) {
  976. sel.by = term.top;
  977. sel.bx = 0;
  978. }
  979. if(sel.ey > term.bot) {
  980. sel.ey = term.bot;
  981. sel.ex = term.col;
  982. }
  983. sel.b.y = sel.by, sel.b.x = sel.bx;
  984. sel.e.y = sel.ey, sel.e.x = sel.ex;
  985. }
  986. }
  987. void
  988. tnewline(int first_col) {
  989. int y = term.c.y;
  990. if(y == term.bot) {
  991. tscrollup(term.top, 1);
  992. } else {
  993. y++;
  994. }
  995. tmoveto(first_col ? 0 : term.c.x, y);
  996. }
  997. void
  998. csiparse(void) {
  999. /* int noarg = 1; */
  1000. char *p = csiescseq.buf;
  1001. csiescseq.narg = 0;
  1002. if(*p == '?')
  1003. csiescseq.priv = 1, p++;
  1004. while(p < csiescseq.buf+csiescseq.len) {
  1005. while(isdigit(*p)) {
  1006. csiescseq.arg[csiescseq.narg] *= 10;
  1007. csiescseq.arg[csiescseq.narg] += *p++ - '0'/*, noarg = 0 */;
  1008. }
  1009. if(*p == ';' && csiescseq.narg+1 < ESC_ARG_SIZ) {
  1010. csiescseq.narg++, p++;
  1011. } else {
  1012. csiescseq.mode = *p;
  1013. csiescseq.narg++;
  1014. return;
  1015. }
  1016. }
  1017. }
  1018. void
  1019. tmoveto(int x, int y) {
  1020. LIMIT(x, 0, term.col-1);
  1021. LIMIT(y, 0, term.row-1);
  1022. term.c.state &= ~CURSOR_WRAPNEXT;
  1023. term.c.x = x;
  1024. term.c.y = y;
  1025. }
  1026. void
  1027. tsetchar(char *c, Glyph *attr, int x, int y) {
  1028. static char *vt100_0[62] = { /* 0x41 - 0x7e */
  1029. "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
  1030. 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
  1031. 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
  1032. 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
  1033. "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
  1034. "␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
  1035. "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
  1036. "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
  1037. };
  1038. /*
  1039. * The table is proudly stolen from rxvt.
  1040. */
  1041. if(attr->mode & ATTR_GFX) {
  1042. if(c[0] >= 0x41 && c[0] <= 0x7e
  1043. && vt100_0[c[0] - 0x41]) {
  1044. c = vt100_0[c[0] - 0x41];
  1045. }
  1046. }
  1047. term.dirty[y] = 1;
  1048. term.line[y][x] = *attr;
  1049. memcpy(term.line[y][x].c, c, UTF_SIZ);
  1050. term.line[y][x].state |= GLYPH_SET;
  1051. }
  1052. void
  1053. tclearregion(int x1, int y1, int x2, int y2) {
  1054. int x, y, temp;
  1055. if(x1 > x2)
  1056. temp = x1, x1 = x2, x2 = temp;
  1057. if(y1 > y2)
  1058. temp = y1, y1 = y2, y2 = temp;
  1059. LIMIT(x1, 0, term.col-1);
  1060. LIMIT(x2, 0, term.col-1);
  1061. LIMIT(y1, 0, term.row-1);
  1062. LIMIT(y2, 0, term.row-1);
  1063. for(y = y1; y <= y2; y++) {
  1064. term.dirty[y] = 1;
  1065. for(x = x1; x <= x2; x++)
  1066. term.line[y][x].state = 0;
  1067. }
  1068. }
  1069. void
  1070. tdeletechar(int n) {
  1071. int src = term.c.x + n;
  1072. int dst = term.c.x;
  1073. int size = term.col - src;
  1074. term.dirty[term.c.y] = 1;
  1075. if(src >= term.col) {
  1076. tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
  1077. return;
  1078. }
  1079. memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
  1080. size * sizeof(Glyph));
  1081. tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
  1082. }
  1083. void
  1084. tinsertblank(int n) {
  1085. int src = term.c.x;
  1086. int dst = src + n;
  1087. int size = term.col - dst;
  1088. term.dirty[term.c.y] = 1;
  1089. if(dst >= term.col) {
  1090. tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
  1091. return;
  1092. }
  1093. memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
  1094. size * sizeof(Glyph));
  1095. tclearregion(src, term.c.y, dst - 1, term.c.y);
  1096. }
  1097. void
  1098. tinsertblankline(int n) {
  1099. if(term.c.y < term.top || term.c.y > term.bot)
  1100. return;
  1101. tscrolldown(term.c.y, n);
  1102. }
  1103. void
  1104. tdeleteline(int n) {
  1105. if(term.c.y < term.top || term.c.y > term.bot)
  1106. return;
  1107. tscrollup(term.c.y, n);
  1108. }
  1109. void
  1110. tsetattr(int *attr, int l) {
  1111. int i;
  1112. for(i = 0; i < l; i++) {
  1113. switch(attr[i]) {
  1114. case 0:
  1115. term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD \
  1116. | ATTR_ITALIC | ATTR_BLINK);
  1117. term.c.attr.fg = DefaultFG;
  1118. term.c.attr.bg = DefaultBG;
  1119. break;
  1120. case 1:
  1121. term.c.attr.mode |= ATTR_BOLD;
  1122. break;
  1123. case 3: /* enter standout (highlight) */
  1124. term.c.attr.mode |= ATTR_ITALIC;
  1125. break;
  1126. case 4:
  1127. term.c.attr.mode |= ATTR_UNDERLINE;
  1128. break;
  1129. case 5:
  1130. term.c.attr.mode |= ATTR_BLINK;
  1131. break;
  1132. case 7:
  1133. term.c.attr.mode |= ATTR_REVERSE;
  1134. break;
  1135. case 21:
  1136. case 22:
  1137. term.c.attr.mode &= ~ATTR_BOLD;
  1138. break;
  1139. case 23: /* leave standout (highlight) mode */
  1140. term.c.attr.mode &= ~ATTR_ITALIC;
  1141. break;
  1142. case 24:
  1143. term.c.attr.mode &= ~ATTR_UNDERLINE;
  1144. break;
  1145. case 25:
  1146. term.c.attr.mode &= ~ATTR_BLINK;
  1147. break;
  1148. case 27:
  1149. term.c.attr.mode &= ~ATTR_REVERSE;
  1150. break;
  1151. case 38:
  1152. if(i + 2 < l && attr[i + 1] == 5) {
  1153. i += 2;
  1154. if(BETWEEN(attr[i], 0, 255)) {
  1155. term.c.attr.fg = attr[i];
  1156. } else {
  1157. fprintf(stderr,
  1158. "erresc: bad fgcolor %d\n",
  1159. attr[i]);
  1160. }
  1161. } else {
  1162. fprintf(stderr,
  1163. "erresc(38): gfx attr %d unknown\n",
  1164. attr[i]);
  1165. }
  1166. break;
  1167. case 39:
  1168. term.c.attr.fg = DefaultFG;
  1169. break;
  1170. case 48:
  1171. if(i + 2 < l && attr[i + 1] == 5) {
  1172. i += 2;
  1173. if(BETWEEN(attr[i], 0, 255)) {
  1174. term.c.attr.bg = attr[i];
  1175. } else {
  1176. fprintf(stderr,
  1177. "erresc: bad bgcolor %d\n",
  1178. attr[i]);
  1179. }
  1180. } else {
  1181. fprintf(stderr,
  1182. "erresc(48): gfx attr %d unknown\n",
  1183. attr[i]);
  1184. }
  1185. break;
  1186. case 49:
  1187. term.c.attr.bg = DefaultBG;
  1188. break;
  1189. default:
  1190. if(BETWEEN(attr[i], 30, 37)) {
  1191. term.c.attr.fg = attr[i] - 30;
  1192. } else if(BETWEEN(attr[i], 40, 47)) {
  1193. term.c.attr.bg = attr[i] - 40;
  1194. } else if(BETWEEN(attr[i], 90, 97)) {
  1195. term.c.attr.fg = attr[i] - 90 + 8;
  1196. } else if(BETWEEN(attr[i], 100, 107)) {
  1197. term.c.attr.bg = attr[i] - 100 + 8;
  1198. } else {
  1199. fprintf(stderr,
  1200. "erresc(default): gfx attr %d unknown\n",
  1201. attr[i]), csidump();
  1202. }
  1203. break;
  1204. }
  1205. }
  1206. }
  1207. void
  1208. tsetscroll(int t, int b) {
  1209. int temp;
  1210. LIMIT(t, 0, term.row-1);
  1211. LIMIT(b, 0, term.row-1);
  1212. if(t > b) {
  1213. temp = t;
  1214. t = b;
  1215. b = temp;
  1216. }
  1217. term.top = t;
  1218. term.bot = b;
  1219. }
  1220. #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
  1221. void
  1222. tsetmode(bool priv, bool set, int *args, int narg) {
  1223. int *lim, mode;
  1224. for(lim = args + narg; args < lim; ++args) {
  1225. if(priv) {
  1226. switch(*args) {
  1227. break;
  1228. case 1: /* DECCKM -- Cursor key */
  1229. MODBIT(term.mode, set, MODE_APPKEYPAD);
  1230. break;
  1231. case 5: /* DECSCNM -- Reverse video */
  1232. mode = term.mode;
  1233. MODBIT(term.mode, set, MODE_REVERSE);
  1234. if(mode != term.mode)
  1235. redraw();
  1236. break;
  1237. case 6: /* XXX: DECOM -- Origin */
  1238. break;
  1239. case 7: /* DECAWM -- Auto wrap */
  1240. MODBIT(term.mode, set, MODE_WRAP);
  1241. break;
  1242. case 8: /* XXX: DECARM -- Auto repeat */
  1243. break;
  1244. case 0: /* Error (IGNORED) */
  1245. case 12: /* att610 -- Start blinking cursor (IGNORED) */
  1246. break;
  1247. case 25:
  1248. MODBIT(term.c.state, !set, CURSOR_HIDE);
  1249. break;
  1250. case 1000: /* 1000,1002: enable xterm mouse report */
  1251. MODBIT(term.mode, set, MODE_MOUSEBTN);
  1252. break;
  1253. case 1002:
  1254. MODBIT(term.mode, set, MODE_MOUSEMOTION);
  1255. break;
  1256. case 1049: /* = 1047 and 1048 */
  1257. case 47:
  1258. case 1047:
  1259. if(IS_SET(MODE_ALTSCREEN))
  1260. tclearregion(0, 0, term.col-1, term.row-1);
  1261. if((set && !IS_SET(MODE_ALTSCREEN)) ||
  1262. (!set && IS_SET(MODE_ALTSCREEN))) {
  1263. tswapscreen();
  1264. }
  1265. if(*args != 1049)
  1266. break;
  1267. /* pass through */
  1268. case 1048:
  1269. tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
  1270. break;
  1271. default:
  1272. /* case 2: DECANM -- ANSI/VT52 (NOT SUPPOURTED) */
  1273. /* case 3: DECCOLM -- Column (NOT SUPPORTED) */
  1274. /* case 4: DECSCLM -- Scroll (NOT SUPPORTED) */
  1275. /* case 18: DECPFF -- Printer feed (NOT SUPPORTED) */
  1276. /* case 19: DECPEX -- Printer extent (NOT SUPPORTED) */
  1277. /* case 42: DECNRCM -- National characters (NOT SUPPORTED) */
  1278. fprintf(stderr,
  1279. "erresc: unknown private set/reset mode %d\n",
  1280. *args);
  1281. break;
  1282. }
  1283. } else {
  1284. switch(*args) {
  1285. case 0: /* Error (IGNORED) */
  1286. break;
  1287. case 2: /* KAM -- keyboard action */
  1288. MODBIT(term.mode, set, MODE_KBDLOCK);
  1289. break;
  1290. case 4: /* IRM -- Insertion-replacement */
  1291. MODBIT(term.mode, set, MODE_INSERT);
  1292. break;
  1293. case 12: /* XXX: SRM -- Send/Receive */
  1294. break;
  1295. case 20: /* LNM -- Linefeed/new line */
  1296. MODBIT(term.mode, set, MODE_CRLF);
  1297. break;
  1298. default:
  1299. fprintf(stderr,
  1300. "erresc: unknown set/reset mode %d\n",
  1301. *args);
  1302. break;
  1303. }
  1304. }
  1305. }
  1306. }
  1307. #undef MODBIT
  1308. void
  1309. csihandle(void) {
  1310. switch(csiescseq.mode) {
  1311. default:
  1312. unknown:
  1313. fprintf(stderr, "erresc: unknown csi ");
  1314. csidump();
  1315. /* die(""); */
  1316. break;
  1317. case '@': /* ICH -- Insert <n> blank char */
  1318. DEFAULT(csiescseq.arg[0], 1);
  1319. tinsertblank(csiescseq.arg[0]);
  1320. break;
  1321. case 'A': /* CUU -- Cursor <n> Up */
  1322. case 'e':
  1323. DEFAULT(csiescseq.arg[0], 1);
  1324. tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
  1325. break;
  1326. case 'B': /* CUD -- Cursor <n> Down */
  1327. DEFAULT(csiescseq.arg[0], 1);
  1328. tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
  1329. break;
  1330. case 'c': /* DA -- Device Attributes */
  1331. if(csiescseq.arg[0] == 0)
  1332. ttywrite(VT102ID, sizeof(VT102ID) - 1);
  1333. break;
  1334. case 'C': /* CUF -- Cursor <n> Forward */
  1335. case 'a':
  1336. DEFAULT(csiescseq.arg[0], 1);
  1337. tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
  1338. break;
  1339. case 'D': /* CUB -- Cursor <n> Backward */
  1340. DEFAULT(csiescseq.arg[0], 1);
  1341. tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
  1342. break;
  1343. case 'E': /* CNL -- Cursor <n> Down and first col */
  1344. DEFAULT(csiescseq.arg[0], 1);
  1345. tmoveto(0, term.c.y+csiescseq.arg[0]);
  1346. break;
  1347. case 'F': /* CPL -- Cursor <n> Up and first col */
  1348. DEFAULT(csiescseq.arg[0], 1);
  1349. tmoveto(0, term.c.y-csiescseq.arg[0]);
  1350. break;
  1351. case 'g': /* TBC -- Tabulation clear */
  1352. switch (csiescseq.arg[0]) {
  1353. case 0: /* clear current tab stop */
  1354. term.tabs[term.c.x] = 0;
  1355. break;
  1356. case 3: /* clear all the tabs */
  1357. memset(term.tabs, 0, term.col * sizeof(*term.tabs));
  1358. break;
  1359. default:
  1360. goto unknown;
  1361. }
  1362. break;
  1363. case 'G': /* CHA -- Move to <col> */
  1364. case '`': /* HPA */
  1365. DEFAULT(csiescseq.arg[0], 1);
  1366. tmoveto(csiescseq.arg[0]-1, term.c.y);
  1367. break;
  1368. case 'H': /* CUP -- Move to <row> <col> */
  1369. case 'f': /* HVP */
  1370. DEFAULT(csiescseq.arg[0], 1);
  1371. DEFAULT(csiescseq.arg[1], 1);
  1372. tmoveto(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
  1373. break;
  1374. case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
  1375. DEFAULT(csiescseq.arg[0], 1);
  1376. while(csiescseq.arg[0]--)
  1377. tputtab(1);
  1378. break;
  1379. case 'J': /* ED -- Clear screen */
  1380. sel.bx = -1;
  1381. switch(csiescseq.arg[0]) {
  1382. case 0: /* below */
  1383. tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
  1384. if(term.c.y < term.row-1)
  1385. tclearregion(0, term.c.y+1, term.col-1, term.row-1);
  1386. break;
  1387. case 1: /* above */
  1388. if(term.c.y > 1)
  1389. tclearregion(0, 0, term.col-1, term.c.y-1);
  1390. tclearregion(0, term.c.y, term.c.x, term.c.y);
  1391. break;
  1392. case 2: /* all */
  1393. tclearregion(0, 0, term.col-1, term.row-1);
  1394. break;
  1395. default:
  1396. goto unknown;
  1397. }
  1398. break;
  1399. case 'K': /* EL -- Clear line */
  1400. switch(csiescseq.arg[0]) {
  1401. case 0: /* right */
  1402. tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
  1403. break;
  1404. case 1: /* left */
  1405. tclearregion(0, term.c.y, term.c.x, term.c.y);
  1406. break;
  1407. case 2: /* all */
  1408. tclearregion(0, term.c.y, term.col-1, term.c.y);
  1409. break;
  1410. }
  1411. break;
  1412. case 'S': /* SU -- Scroll <n> line up */
  1413. DEFAULT(csiescseq.arg[0], 1);
  1414. tscrollup(term.top, csiescseq.arg[0]);
  1415. break;
  1416. case 'T': /* SD -- Scroll <n> line down */
  1417. DEFAULT(csiescseq.arg[0], 1);
  1418. tscrolldown(term.top, csiescseq.arg[0]);
  1419. break;
  1420. case 'L': /* IL -- Insert <n> blank lines */
  1421. DEFAULT(csiescseq.arg[0], 1);
  1422. tinsertblankline(csiescseq.arg[0]);
  1423. break;
  1424. case 'l': /* RM -- Reset Mode */
  1425. tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
  1426. break;
  1427. case 'M': /* DL -- Delete <n> lines */
  1428. DEFAULT(csiescseq.arg[0], 1);
  1429. tdeleteline(csiescseq.arg[0]);
  1430. break;
  1431. case 'X': /* ECH -- Erase <n> char */
  1432. DEFAULT(csiescseq.arg[0], 1);
  1433. tclearregion(term.c.x, term.c.y, term.c.x + csiescseq.arg[0], term.c.y);
  1434. break;
  1435. case 'P': /* DCH -- Delete <n> char */
  1436. DEFAULT(csiescseq.arg[0], 1);
  1437. tdeletechar(csiescseq.arg[0]);
  1438. break;
  1439. case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
  1440. DEFAULT(csiescseq.arg[0], 1);
  1441. while(csiescseq.arg[0]--)
  1442. tputtab(0);
  1443. break;
  1444. case 'd': /* VPA -- Move to <row> */
  1445. DEFAULT(csiescseq.arg[0], 1);
  1446. tmoveto(term.c.x, csiescseq.arg[0]-1);
  1447. break;
  1448. case 'h': /* SM -- Set terminal mode */
  1449. tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
  1450. break;
  1451. case 'm': /* SGR -- Terminal attribute (color) */
  1452. tsetattr(csiescseq.arg, csiescseq.narg);
  1453. break;
  1454. case 'r': /* DECSTBM -- Set Scrolling Region */
  1455. if(csiescseq.priv) {
  1456. goto unknown;
  1457. } else {
  1458. DEFAULT(csiescseq.arg[0], 1);
  1459. DEFAULT(csiescseq.arg[1], term.row);
  1460. tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
  1461. tmoveto(0, 0);
  1462. }
  1463. break;
  1464. case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
  1465. tcursor(CURSOR_SAVE);
  1466. break;
  1467. case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
  1468. tcursor(CURSOR_LOAD);
  1469. break;
  1470. }
  1471. }
  1472. void
  1473. csidump(void) {
  1474. int i;
  1475. uint c;
  1476. printf("ESC[");
  1477. for(i = 0; i < csiescseq.len; i++) {
  1478. c = csiescseq.buf[i] & 0xff;
  1479. if(isprint(c)) {
  1480. putchar(c);
  1481. } else if(c == '\n') {
  1482. printf("(\\n)");
  1483. } else if(c == '\r') {
  1484. printf("(\\r)");
  1485. } else if(c == 0x1b) {
  1486. printf("(\\e)");
  1487. } else {
  1488. printf("(%02x)", c);
  1489. }
  1490. }
  1491. putchar('\n');
  1492. }
  1493. void
  1494. csireset(void) {
  1495. memset(&csiescseq, 0, sizeof(csiescseq));
  1496. }
  1497. void
  1498. strhandle(void) {
  1499. char *p;
  1500. /*
  1501. * TODO: make this being useful in case of color palette change.
  1502. */
  1503. strparse();
  1504. p = strescseq.buf;
  1505. switch(strescseq.type) {
  1506. case ']': /* OSC -- Operating System Command */
  1507. switch(p[0]) {
  1508. case '0':
  1509. case '1':
  1510. case '2':
  1511. /*
  1512. * TODO: Handle special chars in string, like umlauts.
  1513. */
  1514. if(p[1] == ';') {
  1515. XStoreName(xw.dpy, xw.win, strescseq.buf+2);
  1516. }
  1517. break;
  1518. case ';':
  1519. XStoreName(xw.dpy, xw.win, strescseq.buf+1);
  1520. break;
  1521. case '4': /* TODO: Set color (arg0) to "rgb:%hexr/$hexg/$hexb" (arg1) */
  1522. break;
  1523. default:
  1524. fprintf(stderr, "erresc: unknown str ");
  1525. strdump();
  1526. break;
  1527. }
  1528. break;
  1529. case 'k': /* old title set compatibility */
  1530. XStoreName(xw.dpy, xw.win, strescseq.buf);
  1531. break;
  1532. case 'P': /* DSC -- Device Control String */
  1533. case '_': /* APC -- Application Program Command */
  1534. case '^': /* PM -- Privacy Message */
  1535. default:
  1536. fprintf(stderr, "erresc: unknown str ");
  1537. strdump();
  1538. /* die(""); */
  1539. break;
  1540. }
  1541. }
  1542. void
  1543. strparse(void) {
  1544. /*
  1545. * TODO: Implement parsing like for CSI when required.
  1546. * Format: ESC type cmd ';' arg0 [';' argn] ESC \
  1547. */
  1548. return;
  1549. }
  1550. void
  1551. strdump(void) {
  1552. int i;
  1553. uint c;
  1554. printf("ESC%c", strescseq.type);
  1555. for(i = 0; i < strescseq.len; i++) {
  1556. c = strescseq.buf[i] & 0xff;
  1557. if(isprint(c)) {
  1558. putchar(c);
  1559. } else if(c == '\n') {
  1560. printf("(\\n)");
  1561. } else if(c == '\r') {
  1562. printf("(\\r)");
  1563. } else if(c == 0x1b) {
  1564. printf("(\\e)");
  1565. } else {
  1566. printf("(%02x)", c);
  1567. }
  1568. }
  1569. printf("ESC\\\n");
  1570. }
  1571. void
  1572. strreset(void) {
  1573. memset(&strescseq, 0, sizeof(strescseq));
  1574. }
  1575. void
  1576. tputtab(bool forward) {
  1577. uint x = term.c.x;
  1578. if(forward) {
  1579. if(x == term.col)
  1580. return;
  1581. for(++x; x < term.col && !term.tabs[x]; ++x)
  1582. /* nothing */ ;
  1583. } else {
  1584. if(x == 0)
  1585. return;
  1586. for(--x; x > 0 && !term.tabs[x]; --x)
  1587. /* nothing */ ;
  1588. }
  1589. tmoveto(x, term.c.y);
  1590. }
  1591. void
  1592. tputc(char *c, int len) {
  1593. uchar ascii = *c;
  1594. bool control = ascii < '\x20' || ascii == 0177;
  1595. if(iofd != -1)
  1596. write(iofd, c, len);
  1597. /*
  1598. * STR sequences must be checked before of anything
  1599. * because it can use some control codes as part of the sequence
  1600. */
  1601. if(term.esc & ESC_STR) {
  1602. switch(ascii) {
  1603. case '\033':
  1604. term.esc = ESC_START | ESC_STR_END;
  1605. break;
  1606. case '\a': /* backwards compatibility to xterm */
  1607. term.esc = 0;
  1608. strhandle();
  1609. break;
  1610. default:
  1611. strescseq.buf[strescseq.len++] = ascii;
  1612. if(strescseq.len+1 >= STR_BUF_SIZ) {
  1613. term.esc = 0;
  1614. strhandle();
  1615. }
  1616. }
  1617. return;
  1618. }
  1619. /*
  1620. * Actions of control codes must be performed as soon they arrive
  1621. * because they can be embedded inside a control sequence, and
  1622. * they must not cause conflicts with sequences.
  1623. */
  1624. if(control) {
  1625. switch(ascii) {
  1626. case '\t': /* HT */
  1627. tputtab(1);
  1628. return;
  1629. case '\b': /* BS */
  1630. tmoveto(term.c.x-1, term.c.y);
  1631. return;
  1632. case '\r': /* CR */
  1633. tmoveto(0, term.c.y);
  1634. return;
  1635. case '\f': /* LF */
  1636. case '\v': /* VT */
  1637. case '\n': /* LF */
  1638. /* go to first col if the mode is set */
  1639. tnewline(IS_SET(MODE_CRLF));
  1640. return;
  1641. case '\a': /* BEL */
  1642. if(!(xw.state & WIN_FOCUSED))
  1643. xseturgency(1);
  1644. return;
  1645. case '\033': /* ESC */
  1646. csireset();
  1647. term.esc = ESC_START;
  1648. return;
  1649. case '\016': /* SO */
  1650. term.c.attr.mode |= ATTR_GFX;
  1651. return;
  1652. case '\017': /* SI */
  1653. term.c.attr.mode &= ~ATTR_GFX;
  1654. return;
  1655. case '\032': /* SUB */
  1656. case '\030': /* CAN */
  1657. csireset();
  1658. return;
  1659. case '\005': /* ENQ (IGNORED) */
  1660. case '\000': /* NUL (IGNORED) */
  1661. case '\021': /* XON (IGNORED) */
  1662. case '\023': /* XOFF (IGNORED) */
  1663. case 0177: /* DEL (IGNORED) */
  1664. return;
  1665. }
  1666. } else if(term.esc & ESC_START) {
  1667. if(term.esc & ESC_CSI) {
  1668. csiescseq.buf[csiescseq.len++] = ascii;
  1669. if(BETWEEN(ascii, 0x40, 0x7E)
  1670. || csiescseq.len >= ESC_BUF_SIZ) {
  1671. term.esc = 0;
  1672. csiparse(), csihandle();
  1673. }
  1674. } else if(term.esc & ESC_STR_END) {
  1675. term.esc = 0;
  1676. if(ascii == '\\')
  1677. strhandle();
  1678. } else if(term.esc & ESC_ALTCHARSET) {
  1679. switch(ascii) {
  1680. case '0': /* Line drawing set */
  1681. term.c.attr.mode |= ATTR_GFX;
  1682. break;
  1683. case 'B': /* USASCII */
  1684. term.c.attr.mode &= ~ATTR_GFX;
  1685. break;
  1686. case 'A': /* UK (IGNORED) */
  1687. case '<': /* multinational charset (IGNORED) */
  1688. case '5': /* Finnish (IGNORED) */
  1689. case 'C': /* Finnish (IGNORED) */
  1690. case 'K': /* German (IGNORED) */
  1691. break;
  1692. default:
  1693. fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
  1694. }
  1695. term.esc = 0;
  1696. } else if(term.esc & ESC_TEST) {
  1697. if(ascii == '8') { /* DEC screen alignment test. */
  1698. char E[UTF_SIZ] = "E";
  1699. int x, y;
  1700. for(x = 0; x < term.col; ++x) {
  1701. for(y = 0; y < term.row; ++y)
  1702. tsetchar(E, &term.c.attr, x, y);
  1703. }
  1704. }
  1705. term.esc = 0;
  1706. } else {
  1707. switch(ascii) {
  1708. case '[':
  1709. term.esc |= ESC_CSI;
  1710. break;
  1711. case '#':
  1712. term.esc |= ESC_TEST;
  1713. break;
  1714. case 'P': /* DCS -- Device Control String */
  1715. case '_': /* APC -- Application Program Command */
  1716. case '^': /* PM -- Privacy Message */
  1717. case ']': /* OSC -- Operating System Command */
  1718. case 'k': /* old title set compatibility */
  1719. strreset();
  1720. strescseq.type = ascii;
  1721. term.esc |= ESC_STR;
  1722. break;
  1723. case '(': /* set primary charset G0 */
  1724. term.esc |= ESC_ALTCHARSET;
  1725. break;
  1726. case ')': /* set secondary charset G1 (IGNORED) */
  1727. case '*': /* set tertiary charset G2 (IGNORED) */
  1728. case '+': /* set quaternary charset G3 (IGNORED) */
  1729. term.esc = 0;
  1730. break;
  1731. case 'D': /* IND -- Linefeed */
  1732. if(term.c.y == term.bot) {
  1733. tscrollup(term.top, 1);
  1734. } else {
  1735. tmoveto(term.c.x, term.c.y+1);
  1736. }
  1737. term.esc = 0;
  1738. break;
  1739. case 'E': /* NEL -- Next line */
  1740. tnewline(1); /* always go to first col */
  1741. term.esc = 0;
  1742. break;
  1743. case 'H': /* HTS -- Horizontal tab stop */
  1744. term.tabs[term.c.x] = 1;
  1745. term.esc = 0;
  1746. break;
  1747. case 'M': /* RI -- Reverse index */
  1748. if(term.c.y == term.top) {
  1749. tscrolldown(term.top, 1);
  1750. } else {
  1751. tmoveto(term.c.x, term.c.y-1);
  1752. }
  1753. term.esc = 0;
  1754. break;
  1755. case 'Z': /* DECID -- Identify Terminal */
  1756. ttywrite(VT102ID, sizeof(VT102ID) - 1);
  1757. term.esc = 0;
  1758. break;
  1759. case 'c': /* RIS -- Reset to inital state */
  1760. treset();
  1761. term.esc = 0;
  1762. xresettitle();
  1763. break;
  1764. case '=': /* DECPAM -- Application keypad */
  1765. term.mode |= MODE_APPKEYPAD;
  1766. term.esc = 0;
  1767. break;
  1768. case '>': /* DECPNM -- Normal keypad */
  1769. term.mode &= ~MODE_APPKEYPAD;
  1770. term.esc = 0;
  1771. break;
  1772. case '7': /* DECSC -- Save Cursor */
  1773. tcursor(CURSOR_SAVE);
  1774. term.esc = 0;
  1775. break;
  1776. case '8': /* DECRC -- Restore Cursor */
  1777. tcursor(CURSOR_LOAD);
  1778. term.esc = 0;
  1779. break;
  1780. case '\\': /* ST -- Stop */
  1781. term.esc = 0;
  1782. break;
  1783. default:
  1784. fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
  1785. (uchar) ascii, isprint(ascii)? ascii:'.');
  1786. term.esc = 0;
  1787. }
  1788. }
  1789. /*
  1790. * All characters which forms part of a sequence are not
  1791. * printed
  1792. */
  1793. return;
  1794. }
  1795. /*
  1796. * Display control codes only if we are in graphic mode
  1797. */
  1798. if(control && !(term.c.attr.mode & ATTR_GFX))
  1799. return;
  1800. if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
  1801. sel.bx = -1;
  1802. if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
  1803. tnewline(1); /* always go to first col */
  1804. tsetchar(c, &term.c.attr, term.c.x, term.c.y);
  1805. if(term.c.x+1 < term.col)
  1806. tmoveto(term.c.x+1, term.c.y);
  1807. else
  1808. term.c.state |= CURSOR_WRAPNEXT;
  1809. }
  1810. int
  1811. tresize(int col, int row) {
  1812. int i, x;
  1813. int minrow = MIN(row, term.row);
  1814. int mincol = MIN(col, term.col);
  1815. int slide = term.c.y - row + 1;
  1816. bool *bp;
  1817. if(col < 1 || row < 1)
  1818. return 0;
  1819. /* free unneeded rows */
  1820. i = 0;
  1821. if(slide > 0) {
  1822. /* slide screen to keep cursor where we expect it -
  1823. * tscrollup would work here, but we can optimize to
  1824. * memmove because we're freeing the earlier lines */
  1825. for(/* i = 0 */; i < slide; i++) {
  1826. free(term.line[i]);
  1827. free(term.alt[i]);
  1828. }
  1829. memmove(term.line, term.line + slide, row * sizeof(Line));
  1830. memmove(term.alt, term.alt + slide, row * sizeof(Line));
  1831. }
  1832. for(i += row; i < term.row; i++) {
  1833. free(term.line[i]);
  1834. free(term.alt[i]);
  1835. }
  1836. /* resize to new height */
  1837. term.line = xrealloc(term.line, row * sizeof(Line));
  1838. term.alt = xrealloc(term.alt, row * sizeof(Line));
  1839. term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
  1840. term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
  1841. /* resize each row to new width, zero-pad if needed */
  1842. for(i = 0; i < minrow; i++) {
  1843. term.dirty[i] = 1;
  1844. term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
  1845. term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
  1846. for(x = mincol; x < col; x++) {
  1847. term.line[i][x].state = 0;
  1848. term.alt[i][x].state = 0;
  1849. }
  1850. }
  1851. /* allocate any new rows */
  1852. for(/* i == minrow */; i < row; i++) {
  1853. term.dirty[i] = 1;
  1854. term.line[i] = xcalloc(col, sizeof(Glyph));
  1855. term.alt [i] = xcalloc(col, sizeof(Glyph));
  1856. }
  1857. if(col > term.col) {
  1858. bp = term.tabs + term.col;
  1859. memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
  1860. while(--bp > term.tabs && !*bp)
  1861. /* nothing */ ;
  1862. for(bp += TAB; bp < term.tabs + col; bp += TAB)
  1863. *bp = 1;
  1864. }
  1865. /* update terminal size */
  1866. term.col = col, term.row = row;
  1867. /* make use of the LIMIT in tmoveto */
  1868. tmoveto(term.c.x, term.c.y);
  1869. /* reset scrolling region */
  1870. tsetscroll(0, row-1);
  1871. return (slide > 0);
  1872. }
  1873. void
  1874. xresize(int col, int row) {
  1875. xw.tw = MAX(1, 2*BORDER + col * xw.cw);
  1876. xw.th = MAX(1, 2*BORDER + row * xw.ch);
  1877. XftDrawChange(xw.xft_draw, xw.buf);
  1878. }
  1879. void
  1880. xloadcols(void) {
  1881. int i, r, g, b;
  1882. XRenderColor xft_color = { .alpha = 0 };
  1883. /* load colors [0-15] colors and [256-LEN(colorname)[ (config.h) */
  1884. for(i = 0; i < LEN(colorname); i++) {
  1885. if(!colorname[i])
  1886. continue;
  1887. if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, colorname[i], &dc.xft_col[i])) {
  1888. die("Could not allocate color '%s'\n", colorname[i]);
  1889. }
  1890. }
  1891. /* load colors [16-255] ; same colors as xterm */
  1892. for(i = 16, r = 0; r < 6; r++) {
  1893. for(g = 0; g < 6; g++) {
  1894. for(b = 0; b < 6; b++) {
  1895. xft_color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
  1896. xft_color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
  1897. xft_color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
  1898. if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &xft_color, &dc.xft_col[i])) {
  1899. die("Could not allocate color %d\n", i);
  1900. }
  1901. i++;
  1902. }
  1903. }
  1904. }
  1905. for(r = 0; r < 24; r++, i++) {
  1906. xft_color.red = xft_color.green = xft_color.blue = 0x0808 + 0x0a0a * r;
  1907. if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &xft_color,
  1908. &dc.xft_col[i])) {
  1909. die("Could not allocate color %d\n", i);
  1910. }
  1911. }
  1912. }
  1913. void
  1914. xtermclear(int col1, int row1, int col2, int row2) {
  1915. XftDrawRect(xw.xft_draw,
  1916. &dc.xft_col[IS_SET(MODE_REVERSE) ? DefaultFG : DefaultBG],
  1917. BORDER + col1 * xw.cw,
  1918. BORDER + row1 * xw.ch,
  1919. (col2-col1+1) * xw.cw,
  1920. (row2-row1+1) * xw.ch);
  1921. }
  1922. /*
  1923. * Absolute coordinates.
  1924. */
  1925. void
  1926. xclear(int x1, int y1, int x2, int y2) {
  1927. XftDrawRect(xw.xft_draw,
  1928. &dc.xft_col[IS_SET(MODE_REVERSE) ? DefaultFG : DefaultBG],
  1929. x1, y1, x2-x1, y2-y1);
  1930. }
  1931. void
  1932. xhints(void) {
  1933. XClassHint class = {opt_class ? opt_class : TNAME, TNAME};
  1934. XWMHints wm = {.flags = InputHint, .input = 1};
  1935. XSizeHints *sizeh = NULL;
  1936. sizeh = XAllocSizeHints();
  1937. if(xw.isfixed == False) {
  1938. sizeh->flags = PSize | PResizeInc | PBaseSize;
  1939. sizeh->height = xw.h;
  1940. sizeh->width = xw.w;
  1941. sizeh->height_inc = xw.ch;
  1942. sizeh->width_inc = xw.cw;
  1943. sizeh->base_height = 2*BORDER;
  1944. sizeh->base_width = 2*BORDER;
  1945. } else {
  1946. sizeh->flags = PMaxSize | PMinSize;
  1947. sizeh->min_width = sizeh->max_width = xw.fw;
  1948. sizeh->min_height = sizeh->max_height = xw.fh;
  1949. }
  1950. XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm, &class);
  1951. XFree(sizeh);
  1952. }
  1953. void
  1954. xinitfont(Font *f, char *fontstr) {
  1955. FcPattern *pattern, *match;
  1956. FcResult result;
  1957. pattern = FcNameParse((FcChar8 *)fontstr);
  1958. if(!pattern)
  1959. die("st: can't open font %s\n", fontstr);
  1960. match = XftFontMatch(xw.dpy, xw.scr, pattern, &result);
  1961. FcPatternDestroy(pattern);
  1962. if(!match)
  1963. die("st: can't open font %s\n", fontstr);
  1964. if(!(f->xft_set = XftFontOpenPattern(xw.dpy, match))) {
  1965. FcPatternDestroy(match);
  1966. die("st: can't open font %s.\n", fontstr);
  1967. }
  1968. f->ascent = f->xft_set->ascent;
  1969. f->descent = f->xft_set->descent;
  1970. f->lbearing = 0;
  1971. f->rbearing = f->xft_set->max_advance_width;
  1972. f->height = f->xft_set->height;
  1973. f->width = f->lbearing + f->rbearing;
  1974. }
  1975. void
  1976. initfonts(char *fontstr) {
  1977. char *fstr;
  1978. xinitfont(&dc.font, fontstr);
  1979. xw.cw = dc.font.width;
  1980. xw.ch = dc.font.height;
  1981. fstr = smstrcat(fontstr, ":weight=bold", NULL);
  1982. xinitfont(&dc.bfont, fstr);
  1983. free(fstr);
  1984. fstr = smstrcat(fontstr, ":slant=italic,oblique", NULL);
  1985. xinitfont(&dc.ifont, fstr);
  1986. free(fstr);
  1987. fstr = smstrcat(fontstr, ":weight=bold:slant=italic,oblique", NULL);
  1988. xinitfont(&dc.ibfont, fstr);
  1989. free(fstr);
  1990. }
  1991. void
  1992. xinit(void) {
  1993. XSetWindowAttributes attrs;
  1994. Cursor cursor;
  1995. Window parent;
  1996. int sw, sh, major, minor;
  1997. if(!(xw.dpy = XOpenDisplay(NULL)))
  1998. die("Can't open display\n");
  1999. xw.scr = XDefaultScreen(xw.dpy);
  2000. xw.vis = XDefaultVisual(xw.dpy, xw.scr);
  2001. /* font */
  2002. initfonts((opt_font != NULL)? opt_font : FONT);
  2003. /* colors */
  2004. xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
  2005. xloadcols();
  2006. /* adjust fixed window geometry */
  2007. if(xw.isfixed) {
  2008. sw = DisplayWidth(xw.dpy, xw.scr);
  2009. sh = DisplayHeight(xw.dpy, xw.scr);
  2010. if(xw.fx < 0)
  2011. xw.fx = sw + xw.fx - xw.fw - 1;
  2012. if(xw.fy < 0)
  2013. xw.fy = sh + xw.fy - xw.fh - 1;
  2014. xw.h = xw.fh;
  2015. xw.w = xw.fw;
  2016. } else {
  2017. /* window - default size */
  2018. xw.h = 2*BORDER + term.row * xw.ch;
  2019. xw.w = 2*BORDER + term.col * xw.cw;
  2020. xw.fx = 0;
  2021. xw.fy = 0;
  2022. }
  2023. attrs.background_pixel = dc.xft_col[DefaultBG].pixel;
  2024. attrs.border_pixel = dc.xft_col[DefaultBG].pixel;
  2025. attrs.bit_gravity = NorthWestGravity;
  2026. attrs.event_mask = FocusChangeMask | KeyPressMask
  2027. | ExposureMask | VisibilityChangeMask | StructureNotifyMask
  2028. | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
  2029. attrs.colormap = xw.cmap;
  2030. parent = opt_embed ? strtol(opt_embed, NULL, 0) : XRootWindow(xw.dpy, xw.scr);
  2031. xw.win = XCreateWindow(xw.dpy, parent, xw.fx, xw.fy,
  2032. xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
  2033. xw.vis,
  2034. CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
  2035. | CWColormap,
  2036. &attrs);
  2037. /* double buffering */
  2038. if(!XdbeQueryExtension(xw.dpy, &major, &minor))
  2039. die("Xdbe extension is not present\n");
  2040. xw.buf = XdbeAllocateBackBufferName(xw.dpy, xw.win, XdbeCopied);
  2041. /* Xft rendering context */
  2042. xw.xft_draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
  2043. /* input methods */
  2044. xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
  2045. xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
  2046. | XIMStatusNothing, XNClientWindow, xw.win,
  2047. XNFocusWindow, xw.win, NULL);
  2048. /* gc */
  2049. dc.gc = XCreateGC(xw.dpy, xw.win, 0, NULL);
  2050. /* white cursor, black outline */
  2051. cursor = XCreateFontCursor(xw.dpy, XC_xterm);
  2052. XDefineCursor(xw.dpy, xw.win, cursor);
  2053. XRecolorCursor(xw.dpy, cursor,
  2054. &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
  2055. &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
  2056. xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
  2057. xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
  2058. XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
  2059. xresettitle();
  2060. XMapWindow(xw.dpy, xw.win);
  2061. xhints();
  2062. XSync(xw.dpy, 0);
  2063. }
  2064. void
  2065. xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
  2066. int winx = BORDER + x * xw.cw, winy = BORDER + y * xw.ch,
  2067. width = charlen * xw.cw;
  2068. Font *font = &dc.font;
  2069. XGlyphInfo extents;
  2070. XftColor *fg = &dc.xft_col[base.fg], *bg = &dc.xft_col[base.bg],
  2071. *temp, revfg, revbg;
  2072. XRenderColor colfg, colbg;
  2073. if(base.mode & ATTR_REVERSE)
  2074. temp = fg, fg = bg, bg = temp;
  2075. if(base.mode & ATTR_BOLD) {
  2076. if(BETWEEN(base.fg, 0, 7)) {
  2077. /* basic system colors */
  2078. fg = &dc.xft_col[base.fg + 8];
  2079. } else if(BETWEEN(base.fg, 16, 195)) {
  2080. /* 256 colors */
  2081. fg = &dc.xft_col[base.fg + 36];
  2082. } else if(BETWEEN(base.fg, 232, 251)) {
  2083. /* greyscale */
  2084. fg = &dc.xft_col[base.fg + 4];
  2085. }
  2086. /*
  2087. * Those ranges will not be brightened:
  2088. * 8 - 15 – bright system colors
  2089. * 196 - 231 – highest 256 color cube
  2090. * 252 - 255 – brightest colors in greyscale
  2091. */
  2092. font = &dc.bfont;
  2093. }
  2094. if(base.mode & ATTR_ITALIC)
  2095. font = &dc.ifont;
  2096. if(base.mode & (ATTR_ITALIC|ATTR_ITALIC))
  2097. font = &dc.ibfont;
  2098. if(IS_SET(MODE_REVERSE)) {
  2099. if(fg == &dc.xft_col[DefaultFG]) {
  2100. fg = &dc.xft_col[DefaultBG];
  2101. } else {
  2102. colfg.red = ~fg->color.red;
  2103. colfg.green = ~fg->color.green;
  2104. colfg.blue = ~fg->color.blue;
  2105. colfg.alpha = fg->color.alpha;
  2106. XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
  2107. fg = &revfg;
  2108. }
  2109. if(bg == &dc.xft_col[DefaultBG]) {
  2110. bg = &dc.xft_col[DefaultFG];
  2111. } else {
  2112. colbg.red = ~bg->color.red;
  2113. colbg.green = ~bg->color.green;
  2114. colbg.blue = ~bg->color.blue;
  2115. colbg.alpha = bg->color.alpha;
  2116. XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &revbg);
  2117. bg = &revbg;
  2118. }
  2119. }
  2120. XftTextExtentsUtf8(xw.dpy, font->xft_set, (FcChar8 *)s, bytelen,
  2121. &extents);
  2122. width = extents.xOff;
  2123. /* Intelligent cleaning up of the borders. */
  2124. if(x == 0) {
  2125. xclear(0, (y == 0)? 0 : winy, BORDER,
  2126. winy + xw.ch + (y == term.row-1)? xw.h : 0);
  2127. }
  2128. if(x + charlen >= term.col-1) {
  2129. xclear(winx + width, (y == 0)? 0 : winy, xw.w,
  2130. (y == term.row-1)? xw.h : (winy + xw.ch));
  2131. }
  2132. if(y == 0)
  2133. xclear(winx, 0, winx + width, BORDER);
  2134. if(y == term.row-1)
  2135. xclear(winx, winy + xw.ch, winx + width, xw.h);
  2136. XftDrawRect(xw.xft_draw, bg, winx, winy, width, xw.ch);
  2137. XftDrawStringUtf8(xw.xft_draw, fg, font->xft_set, winx,
  2138. winy + font->ascent, (FcChar8 *)s, bytelen);
  2139. if(base.mode & ATTR_UNDERLINE) {
  2140. XftDrawRect(xw.xft_draw, fg, winx, winy + font->ascent + 1,
  2141. width, 1);
  2142. }
  2143. }
  2144. void
  2145. xdrawcursor(void) {
  2146. static int oldx = 0, oldy = 0;
  2147. int sl;
  2148. Glyph g = {{' '}, ATTR_NULL, DefaultBG, DefaultCS, 0};
  2149. LIMIT(oldx, 0, term.col-1);
  2150. LIMIT(oldy, 0, term.row-1);
  2151. if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
  2152. memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
  2153. /* remove the old cursor */
  2154. if(term.line[oldy][oldx].state & GLYPH_SET) {
  2155. sl = utf8size(term.line[oldy][oldx].c);
  2156. xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx,
  2157. oldy, 1, sl);
  2158. } else {
  2159. xtermclear(oldx, oldy, oldx, oldy);
  2160. }
  2161. /* draw the new one */
  2162. if(!(term.c.state & CURSOR_HIDE)) {
  2163. if(!(xw.state & WIN_FOCUSED))
  2164. g.bg = DefaultUCS;
  2165. if(IS_SET(MODE_REVERSE))
  2166. g.mode |= ATTR_REVERSE, g.fg = DefaultCS, g.bg = DefaultFG;
  2167. sl = utf8size(g.c);
  2168. xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
  2169. oldx = term.c.x, oldy = term.c.y;
  2170. }
  2171. }
  2172. void
  2173. xresettitle(void) {
  2174. XStoreName(xw.dpy, xw.win, opt_title ? opt_title : "st");
  2175. }
  2176. void
  2177. redraw(void) {
  2178. struct timespec tv = {0, REDRAW_TIMEOUT * 1000};
  2179. tfulldirt();
  2180. draw();
  2181. XSync(xw.dpy, False); /* necessary for a good tput flash */
  2182. nanosleep(&tv, NULL);
  2183. }
  2184. void
  2185. draw(void) {
  2186. XdbeSwapInfo swpinfo[1] = {{xw.win, XdbeCopied}};
  2187. drawregion(0, 0, term.col, term.row);
  2188. XdbeSwapBuffers(xw.dpy, swpinfo, 1);
  2189. }
  2190. void
  2191. drawregion(int x1, int y1, int x2, int y2) {
  2192. int ic, ib, x, y, ox, sl;
  2193. Glyph base, new;
  2194. char buf[DRAW_BUF_SIZ];
  2195. bool ena_sel = sel.bx != -1, alt = IS_SET(MODE_ALTSCREEN);
  2196. if((sel.alt && !alt) || (!sel.alt && alt))
  2197. ena_sel = 0;
  2198. if(!(xw.state & WIN_VISIBLE))
  2199. return;
  2200. for(y = y1; y < y2; y++) {
  2201. if(!term.dirty[y])
  2202. continue;
  2203. xtermclear(0, y, term.col, y);
  2204. term.dirty[y] = 0;
  2205. base = term.line[y][0];
  2206. ic = ib = ox = 0;
  2207. for(x = x1; x < x2; x++) {
  2208. new = term.line[y][x];
  2209. if(ena_sel && *(new.c) && selected(x, y))
  2210. new.mode ^= ATTR_REVERSE;
  2211. if(ib > 0 && (!(new.state & GLYPH_SET)
  2212. || ATTRCMP(base, new)
  2213. || ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
  2214. xdraws(buf, base, ox, y, ic, ib);
  2215. ic = ib = 0;
  2216. }
  2217. if(new.state & GLYPH_SET) {
  2218. if(ib == 0) {
  2219. ox = x;
  2220. base = new;
  2221. }
  2222. sl = utf8size(new.c);
  2223. memcpy(buf+ib, new.c, sl);
  2224. ib += sl;
  2225. ++ic;
  2226. }
  2227. }
  2228. if(ib > 0)
  2229. xdraws(buf, base, ox, y, ic, ib);
  2230. }
  2231. xdrawcursor();
  2232. }
  2233. void
  2234. expose(XEvent *ev) {
  2235. XExposeEvent *e = &ev->xexpose;
  2236. if(xw.state & WIN_REDRAW) {
  2237. if(!e->count)
  2238. xw.state &= ~WIN_REDRAW;
  2239. }
  2240. }
  2241. void
  2242. visibility(XEvent *ev) {
  2243. XVisibilityEvent *e = &ev->xvisibility;
  2244. if(e->state == VisibilityFullyObscured) {
  2245. xw.state &= ~WIN_VISIBLE;
  2246. } else if(!(xw.state & WIN_VISIBLE)) {
  2247. /* need a full redraw for next Expose, not just a buf copy */
  2248. xw.state |= WIN_VISIBLE | WIN_REDRAW;
  2249. }
  2250. }
  2251. void
  2252. unmap(XEvent *ev) {
  2253. xw.state &= ~WIN_VISIBLE;
  2254. }
  2255. void
  2256. xseturgency(int add) {
  2257. XWMHints *h = XGetWMHints(xw.dpy, xw.win);
  2258. h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
  2259. XSetWMHints(xw.dpy, xw.win, h);
  2260. XFree(h);
  2261. }
  2262. void
  2263. focus(XEvent *ev) {
  2264. if(ev->type == FocusIn) {
  2265. xw.state |= WIN_FOCUSED;
  2266. xseturgency(0);
  2267. } else {
  2268. xw.state &= ~WIN_FOCUSED;
  2269. }
  2270. }
  2271. char*
  2272. kmap(KeySym k, uint state) {
  2273. int i;
  2274. uint mask;
  2275. state &= ~Mod2Mask;
  2276. for(i = 0; i < LEN(key); i++) {
  2277. mask = key[i].mask;
  2278. if(key[i].k == k && ((state & mask) == mask
  2279. || (mask == XK_NO_MOD && !state))) {
  2280. return (char*)key[i].s;
  2281. }
  2282. }
  2283. return NULL;
  2284. }
  2285. void
  2286. kpress(XEvent *ev) {
  2287. XKeyEvent *e = &ev->xkey;
  2288. KeySym ksym;
  2289. char buf[32];
  2290. char *customkey;
  2291. int len;
  2292. int meta;
  2293. int shift;
  2294. Status status;
  2295. if (IS_SET(MODE_KBDLOCK))
  2296. return;
  2297. meta = e->state & Mod1Mask;
  2298. shift = e->state & ShiftMask;
  2299. len = XmbLookupString(xw.xic, e, buf, sizeof(buf), &ksym, &status);
  2300. /* 1. custom keys from config.h */
  2301. if((customkey = kmap(ksym, e->state))) {
  2302. ttywrite(customkey, strlen(customkey));
  2303. /* 2. hardcoded (overrides X lookup) */
  2304. } else {
  2305. switch(ksym) {
  2306. case XK_Up:
  2307. case XK_Down:
  2308. case XK_Left:
  2309. case XK_Right:
  2310. /* XXX: shift up/down doesn't work */
  2311. sprintf(buf, "\033%c%c",
  2312. IS_SET(MODE_APPKEYPAD) ? 'O' : '[',
  2313. (shift ? "dacb":"DACB")[ksym - XK_Left]);
  2314. ttywrite(buf, 3);
  2315. break;
  2316. case XK_Insert:
  2317. if(shift)
  2318. selpaste();
  2319. break;
  2320. case XK_Return:
  2321. if(IS_SET(MODE_CRLF)) {
  2322. ttywrite("\r\n", 2);
  2323. } else {
  2324. ttywrite("\r", 1);
  2325. }
  2326. break;
  2327. /* 3. X lookup */
  2328. default:
  2329. if(len > 0) {
  2330. if(meta && len == 1)
  2331. ttywrite("\033", 1);
  2332. ttywrite(buf, len);
  2333. }
  2334. break;
  2335. }
  2336. }
  2337. }
  2338. void
  2339. cmessage(XEvent *e) {
  2340. /* See xembed specs
  2341. http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html */
  2342. if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
  2343. if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
  2344. xw.state |= WIN_FOCUSED;
  2345. xseturgency(0);
  2346. } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
  2347. xw.state &= ~WIN_FOCUSED;
  2348. }
  2349. } else if(e->xclient.data.l[0] == xw.wmdeletewin) {
  2350. /* Send SIGHUP to shell */
  2351. kill(pid, SIGHUP);
  2352. exit(EXIT_SUCCESS);
  2353. }
  2354. }
  2355. void
  2356. resize(XEvent *e) {
  2357. int col, row;
  2358. if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
  2359. return;
  2360. xw.w = e->xconfigure.width;
  2361. xw.h = e->xconfigure.height;
  2362. col = (xw.w - 2*BORDER) / xw.cw;
  2363. row = (xw.h - 2*BORDER) / xw.ch;
  2364. if(col == term.col && row == term.row)
  2365. return;
  2366. tresize(col, row);
  2367. xresize(col, row);
  2368. ttyresize();
  2369. }
  2370. void
  2371. run(void) {
  2372. XEvent ev;
  2373. fd_set rfd;
  2374. int xfd = XConnectionNumber(xw.dpy), i;
  2375. struct timeval drawtimeout, *tv = NULL;
  2376. for(i = 0;; i++) {
  2377. FD_ZERO(&rfd);
  2378. FD_SET(cmdfd, &rfd);
  2379. FD_SET(xfd, &rfd);
  2380. if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv) < 0) {
  2381. if(errno == EINTR)
  2382. continue;
  2383. die("select failed: %s\n", SERRNO);
  2384. }
  2385. /*
  2386. * Stop after a certain number of reads so the user does not
  2387. * feel like the system is stuttering.
  2388. */
  2389. if(i < 1000 && FD_ISSET(cmdfd, &rfd)) {
  2390. ttyread();
  2391. /*
  2392. * Just wait a bit so it isn't disturbing the
  2393. * user and the system is able to write something.
  2394. */
  2395. drawtimeout.tv_sec = 0;
  2396. drawtimeout.tv_usec = 5;
  2397. tv = &drawtimeout;
  2398. continue;
  2399. }
  2400. i = 0;
  2401. tv = NULL;
  2402. while(XPending(xw.dpy)) {
  2403. XNextEvent(xw.dpy, &ev);
  2404. if(XFilterEvent(&ev, xw.win))
  2405. continue;
  2406. if(handler[ev.type])
  2407. (handler[ev.type])(&ev);
  2408. }
  2409. draw();
  2410. XFlush(xw.dpy);
  2411. }
  2412. }
  2413. int
  2414. main(int argc, char *argv[]) {
  2415. int i, bitm, xr, yr;
  2416. uint wr, hr;
  2417. xw.fw = xw.fh = xw.fx = xw.fy = 0;
  2418. xw.isfixed = False;
  2419. for(i = 1; i < argc; i++) {
  2420. switch(argv[i][0] != '-' || argv[i][2] ? -1 : argv[i][1]) {
  2421. case 'c':
  2422. if(++i < argc)
  2423. opt_class = argv[i];
  2424. break;
  2425. case 'e':
  2426. /* eat every remaining arguments */
  2427. if(++i < argc)
  2428. opt_cmd = &argv[i];
  2429. goto run;
  2430. case 'f':
  2431. if(++i < argc)
  2432. opt_font = argv[i];
  2433. break;
  2434. case 'g':
  2435. if(++i >= argc)
  2436. break;
  2437. bitm = XParseGeometry(argv[i], &xr, &yr, &wr, &hr);
  2438. if(bitm & XValue)
  2439. xw.fx = xr;
  2440. if(bitm & YValue)
  2441. xw.fy = yr;
  2442. if(bitm & WidthValue)
  2443. xw.fw = (int)wr;
  2444. if(bitm & HeightValue)
  2445. xw.fh = (int)hr;
  2446. if(bitm & XNegative && xw.fx == 0)
  2447. xw.fx = -1;
  2448. if(bitm & XNegative && xw.fy == 0)
  2449. xw.fy = -1;
  2450. if(xw.fh != 0 && xw.fw != 0)
  2451. xw.isfixed = True;
  2452. break;
  2453. case 'o':
  2454. if(++i < argc)
  2455. opt_io = argv[i];
  2456. break;
  2457. case 't':
  2458. if(++i < argc)
  2459. opt_title = argv[i];
  2460. break;
  2461. case 'v':
  2462. default:
  2463. die(USAGE);
  2464. case 'w':
  2465. if(++i < argc)
  2466. opt_embed = argv[i];
  2467. break;
  2468. }
  2469. }
  2470. run:
  2471. setlocale(LC_CTYPE, "");
  2472. tnew(80, 24);
  2473. ttynew();
  2474. xinit();
  2475. selinit();
  2476. run();
  2477. return 0;
  2478. }