st.c 63 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 <pwd.h>
  9. #include <stdarg.h>
  10. #include <stdbool.h>
  11. #include <stdio.h>
  12. #include <stdlib.h>
  13. #include <string.h>
  14. #include <signal.h>
  15. #include <sys/ioctl.h>
  16. #include <sys/select.h>
  17. #include <sys/stat.h>
  18. #include <sys/time.h>
  19. #include <sys/types.h>
  20. #include <sys/wait.h>
  21. #include <time.h>
  22. #include <unistd.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/extensions/Xdbe.h>
  29. #include <X11/Xft/Xft.h>
  30. #include <fontconfig/fontconfig.h>
  31. #define Glyph Glyph_
  32. #define Font Font_
  33. #define Draw XftDraw *
  34. #define Colour XftColor
  35. #define Colourmap Colormap
  36. #if defined(__linux)
  37. #include <pty.h>
  38. #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
  39. #include <util.h>
  40. #elif defined(__FreeBSD__) || defined(__DragonFly__)
  41. #include <libutil.h>
  42. #endif
  43. #define USAGE \
  44. "st " VERSION " (c) 2010-2012 st engineers\n" \
  45. "usage: st [-v] [-c class] [-f font] [-g geometry] [-o file]" \
  46. " [-t title] [-w windowid] [-e command ...]\n"
  47. /* XEMBED messages */
  48. #define XEMBED_FOCUS_IN 4
  49. #define XEMBED_FOCUS_OUT 5
  50. /* Arbitrary sizes */
  51. #define ESC_BUF_SIZ 256
  52. #define ESC_ARG_SIZ 16
  53. #define STR_BUF_SIZ 256
  54. #define STR_ARG_SIZ 16
  55. #define DRAW_BUF_SIZ 20*1024
  56. #define UTF_SIZ 4
  57. #define XK_NO_MOD UINT_MAX
  58. #define XK_ANY_MOD 0
  59. #define REDRAW_TIMEOUT (80*1000) /* 80 ms */
  60. /* macros */
  61. #define CLEANMASK(mask) (mask & (ShiftMask|ControlMask|Mod1Mask|Mod2Mask|Mod3Mask|Mod4Mask|Mod5Mask))
  62. #define SERRNO strerror(errno)
  63. #define MIN(a, b) ((a) < (b) ? (a) : (b))
  64. #define MAX(a, b) ((a) < (b) ? (b) : (a))
  65. #define LEN(a) (sizeof(a) / sizeof(a[0]))
  66. #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
  67. #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
  68. #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
  69. #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
  70. #define IS_SET(flag) (term.mode & (flag))
  71. #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000)
  72. #define VT102ID "\033[?6c"
  73. enum glyph_attribute {
  74. ATTR_NULL = 0,
  75. ATTR_REVERSE = 1,
  76. ATTR_UNDERLINE = 2,
  77. ATTR_BOLD = 4,
  78. ATTR_GFX = 8,
  79. ATTR_ITALIC = 16,
  80. ATTR_BLINK = 32,
  81. };
  82. enum cursor_movement {
  83. CURSOR_UP,
  84. CURSOR_DOWN,
  85. CURSOR_LEFT,
  86. CURSOR_RIGHT,
  87. CURSOR_SAVE,
  88. CURSOR_LOAD
  89. };
  90. enum cursor_state {
  91. CURSOR_DEFAULT = 0,
  92. CURSOR_WRAPNEXT = 1,
  93. CURSOR_ORIGIN = 2
  94. };
  95. enum glyph_state {
  96. GLYPH_SET = 1,
  97. GLYPH_DIRTY = 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_MOUSE = 32|64,
  108. MODE_REVERSE = 128,
  109. MODE_KBDLOCK = 256,
  110. MODE_HIDE = 512
  111. };
  112. enum escape_state {
  113. ESC_START = 1,
  114. ESC_CSI = 2,
  115. ESC_STR = 4, /* DSC, OSC, PM, APC */
  116. ESC_ALTCHARSET = 8,
  117. ESC_STR_END = 16, /* a final string was encountered */
  118. ESC_TEST = 32, /* Enter in test mode */
  119. };
  120. enum window_state {
  121. WIN_VISIBLE = 1,
  122. WIN_REDRAW = 2,
  123. WIN_FOCUSED = 4
  124. };
  125. /* bit macro */
  126. #undef B0
  127. enum { B0=1, B1=2, B2=4, B3=8, B4=16, B5=32, B6=64, B7=128 };
  128. typedef unsigned char uchar;
  129. typedef unsigned int uint;
  130. typedef unsigned long ulong;
  131. typedef unsigned short ushort;
  132. typedef struct {
  133. char c[UTF_SIZ]; /* character code */
  134. uchar mode; /* attribute flags */
  135. ushort fg; /* foreground */
  136. ushort bg; /* background */
  137. uchar state; /* state flags */
  138. } Glyph;
  139. typedef Glyph* Line;
  140. typedef struct {
  141. Glyph attr; /* current char attributes */
  142. int x;
  143. int y;
  144. char state;
  145. } TCursor;
  146. /* CSI Escape sequence structs */
  147. /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
  148. typedef struct {
  149. char buf[ESC_BUF_SIZ]; /* raw string */
  150. int len; /* raw string length */
  151. char priv;
  152. int arg[ESC_ARG_SIZ];
  153. int narg; /* nb of args */
  154. char mode;
  155. } CSIEscape;
  156. /* STR Escape sequence structs */
  157. /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
  158. typedef struct {
  159. char type; /* ESC type ... */
  160. char buf[STR_BUF_SIZ]; /* raw string */
  161. int len; /* raw string length */
  162. char *args[STR_ARG_SIZ];
  163. int narg; /* nb of args */
  164. } STREscape;
  165. /* Internal representation of the screen */
  166. typedef struct {
  167. int row; /* nb row */
  168. int col; /* nb col */
  169. Line *line; /* screen */
  170. Line *alt; /* alternate screen */
  171. bool *dirty; /* dirtyness of lines */
  172. TCursor c; /* cursor */
  173. int top; /* top scroll limit */
  174. int bot; /* bottom scroll limit */
  175. int mode; /* terminal mode flags */
  176. int esc; /* escape state flags */
  177. bool *tabs;
  178. } Term;
  179. /* Purely graphic info */
  180. typedef struct {
  181. Display *dpy;
  182. Colourmap cmap;
  183. Window win;
  184. XdbeBackBuffer buf;
  185. Atom xembed, wmdeletewin;
  186. XIM xim;
  187. XIC xic;
  188. Draw draw;
  189. Visual *vis;
  190. int scr;
  191. bool isfixed; /* is fixed geometry? */
  192. int fx, fy, fw, fh; /* fixed geometry */
  193. int tw, th; /* tty width and height */
  194. int w; /* window width */
  195. int h; /* window height */
  196. int ch; /* char height */
  197. int cw; /* char width */
  198. char state; /* focus, redraw, visible */
  199. } XWindow;
  200. typedef struct {
  201. KeySym k;
  202. uint mask;
  203. char s[ESC_BUF_SIZ];
  204. } Key;
  205. /* TODO: use better name for vars... */
  206. typedef struct {
  207. int mode;
  208. int bx, by;
  209. int ex, ey;
  210. struct {
  211. int x, y;
  212. } b, e;
  213. char *clip;
  214. Atom xtarget;
  215. bool alt;
  216. struct timeval tclick1;
  217. struct timeval tclick2;
  218. } Selection;
  219. typedef union {
  220. int i;
  221. unsigned int ui;
  222. float f;
  223. const void *v;
  224. } Arg;
  225. typedef struct {
  226. unsigned int mod;
  227. KeySym keysym;
  228. void (*func)(const Arg *);
  229. const Arg arg;
  230. } Shortcut;
  231. /* function definitions used in config.h */
  232. static void xzoom(const Arg *);
  233. /* Config.h for applying patches and the configuration. */
  234. #include "config.h"
  235. /* Font structure */
  236. typedef struct {
  237. int height;
  238. int width;
  239. int ascent;
  240. int descent;
  241. short lbearing;
  242. short rbearing;
  243. XftFont *set;
  244. } Font;
  245. /* Drawing Context */
  246. typedef struct {
  247. Colour col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
  248. Font font, bfont, ifont, ibfont;
  249. } DC;
  250. static void die(const char *, ...);
  251. static void draw(void);
  252. static void redraw(void);
  253. static void drawregion(int, int, int, int);
  254. static void execsh(void);
  255. static void sigchld(int);
  256. static void run(void);
  257. static void csidump(void);
  258. static void csihandle(void);
  259. static void csiparse(void);
  260. static void csireset(void);
  261. static void strdump(void);
  262. static void strhandle(void);
  263. static void strparse(void);
  264. static void strreset(void);
  265. static void tclearregion(int, int, int, int);
  266. static void tcursor(int);
  267. static void tdeletechar(int);
  268. static void tdeleteline(int);
  269. static void tinsertblank(int);
  270. static void tinsertblankline(int);
  271. static void tmoveto(int, int);
  272. static void tmoveato(int x, int y);
  273. static void tnew(int, int);
  274. static void tnewline(int);
  275. static void tputtab(bool);
  276. static void tputc(char *, int);
  277. static void treset(void);
  278. static int tresize(int, int);
  279. static void tscrollup(int, int);
  280. static void tscrolldown(int, int);
  281. static void tsetattr(int*, int);
  282. static void tsetchar(char *, Glyph *, int, int);
  283. static void tsetscroll(int, int);
  284. static void tswapscreen(void);
  285. static void tsetdirt(int, int);
  286. static void tsetmode(bool, bool, int *, int);
  287. static void tfulldirt(void);
  288. static void ttynew(void);
  289. static void ttyread(void);
  290. static void ttyresize(void);
  291. static void ttywrite(const char *, size_t);
  292. static void xdraws(char *, Glyph, int, int, int, int);
  293. static void xhints(void);
  294. static void xclear(int, int, int, int);
  295. static void xdrawcursor(void);
  296. static void xinit(void);
  297. static void xloadcols(void);
  298. static void xresettitle(void);
  299. static void xseturgency(int);
  300. static void xsetsel(char*);
  301. static void xtermclear(int, int, int, int);
  302. static void xresize(int, int);
  303. static void expose(XEvent *);
  304. static void visibility(XEvent *);
  305. static void unmap(XEvent *);
  306. static char *kmap(KeySym, uint);
  307. static void kpress(XEvent *);
  308. static void cmessage(XEvent *);
  309. static void cresize(int width, int height);
  310. static void resize(XEvent *);
  311. static void focus(XEvent *);
  312. static void brelease(XEvent *);
  313. static void bpress(XEvent *);
  314. static void bmotion(XEvent *);
  315. static void selnotify(XEvent *);
  316. static void selclear(XEvent *);
  317. static void selrequest(XEvent *);
  318. static void selinit(void);
  319. static inline bool selected(int, int);
  320. static void selcopy(void);
  321. static void selpaste(void);
  322. static void selscroll(int, int);
  323. static int utf8decode(char *, long *);
  324. static int utf8encode(long *, char *);
  325. static int utf8size(char *);
  326. static int isfullutf8(char *, int);
  327. static ssize_t xwrite(int, char *, size_t);
  328. static void *xmalloc(size_t);
  329. static void *xrealloc(void *, size_t);
  330. static void *xcalloc(size_t nmemb, size_t size);
  331. static void (*handler[LASTEvent])(XEvent *) = {
  332. [KeyPress] = kpress,
  333. [ClientMessage] = cmessage,
  334. [ConfigureNotify] = resize,
  335. [VisibilityNotify] = visibility,
  336. [UnmapNotify] = unmap,
  337. [Expose] = expose,
  338. [FocusIn] = focus,
  339. [FocusOut] = focus,
  340. [MotionNotify] = bmotion,
  341. [ButtonPress] = bpress,
  342. [ButtonRelease] = brelease,
  343. [SelectionClear] = selclear,
  344. [SelectionNotify] = selnotify,
  345. [SelectionRequest] = selrequest,
  346. };
  347. /* Globals */
  348. static DC dc;
  349. static XWindow xw;
  350. static Term term;
  351. static CSIEscape csiescseq;
  352. static STREscape strescseq;
  353. static int cmdfd;
  354. static pid_t pid;
  355. static Selection sel;
  356. static int iofd = -1;
  357. static char **opt_cmd = NULL;
  358. static char *opt_io = NULL;
  359. static char *opt_title = NULL;
  360. static char *opt_embed = NULL;
  361. static char *opt_class = NULL;
  362. static char *opt_font = NULL;
  363. static char *usedfont = NULL;
  364. static int usedfontsize = 0;
  365. ssize_t
  366. xwrite(int fd, char *s, size_t len) {
  367. size_t aux = len;
  368. while(len > 0) {
  369. ssize_t r = write(fd, s, len);
  370. if(r < 0)
  371. return r;
  372. len -= r;
  373. s += r;
  374. }
  375. return aux;
  376. }
  377. void *
  378. xmalloc(size_t len) {
  379. void *p = malloc(len);
  380. if(!p)
  381. die("Out of memory\n");
  382. return p;
  383. }
  384. void *
  385. xrealloc(void *p, size_t len) {
  386. if((p = realloc(p, len)) == NULL)
  387. die("Out of memory\n");
  388. return p;
  389. }
  390. void *
  391. xcalloc(size_t nmemb, size_t size) {
  392. void *p = calloc(nmemb, size);
  393. if(!p)
  394. die("Out of memory\n");
  395. return p;
  396. }
  397. int
  398. utf8decode(char *s, long *u) {
  399. uchar c;
  400. int i, n, rtn;
  401. rtn = 1;
  402. c = *s;
  403. if(~c & B7) { /* 0xxxxxxx */
  404. *u = c;
  405. return rtn;
  406. } else if((c & (B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */
  407. *u = c&(B4|B3|B2|B1|B0);
  408. n = 1;
  409. } else if((c & (B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */
  410. *u = c&(B3|B2|B1|B0);
  411. n = 2;
  412. } else if((c & (B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */
  413. *u = c & (B2|B1|B0);
  414. n = 3;
  415. } else {
  416. goto invalid;
  417. }
  418. for(i = n, ++s; i > 0; --i, ++rtn, ++s) {
  419. c = *s;
  420. if((c & (B7|B6)) != B7) /* 10xxxxxx */
  421. goto invalid;
  422. *u <<= 6;
  423. *u |= c & (B5|B4|B3|B2|B1|B0);
  424. }
  425. if((n == 1 && *u < 0x80) ||
  426. (n == 2 && *u < 0x800) ||
  427. (n == 3 && *u < 0x10000) ||
  428. (*u >= 0xD800 && *u <= 0xDFFF)) {
  429. goto invalid;
  430. }
  431. return rtn;
  432. invalid:
  433. *u = 0xFFFD;
  434. return rtn;
  435. }
  436. int
  437. utf8encode(long *u, char *s) {
  438. uchar *sp;
  439. ulong uc;
  440. int i, n;
  441. sp = (uchar *)s;
  442. uc = *u;
  443. if(uc < 0x80) {
  444. *sp = uc; /* 0xxxxxxx */
  445. return 1;
  446. } else if(*u < 0x800) {
  447. *sp = (uc >> 6) | (B7|B6); /* 110xxxxx */
  448. n = 1;
  449. } else if(uc < 0x10000) {
  450. *sp = (uc >> 12) | (B7|B6|B5); /* 1110xxxx */
  451. n = 2;
  452. } else if(uc <= 0x10FFFF) {
  453. *sp = (uc >> 18) | (B7|B6|B5|B4); /* 11110xxx */
  454. n = 3;
  455. } else {
  456. goto invalid;
  457. }
  458. for(i=n,++sp; i>0; --i,++sp)
  459. *sp = ((uc >> 6*(i-1)) & (B5|B4|B3|B2|B1|B0)) | B7; /* 10xxxxxx */
  460. return n+1;
  461. invalid:
  462. /* U+FFFD */
  463. *s++ = '\xEF';
  464. *s++ = '\xBF';
  465. *s = '\xBD';
  466. return 3;
  467. }
  468. /* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode
  469. UTF-8 otherwise return 0 */
  470. int
  471. isfullutf8(char *s, int b) {
  472. uchar *c1, *c2, *c3;
  473. c1 = (uchar *)s;
  474. c2 = (uchar *)++s;
  475. c3 = (uchar *)++s;
  476. if(b < 1) {
  477. return 0;
  478. } else if((*c1&(B7|B6|B5)) == (B7|B6) && b == 1) {
  479. return 0;
  480. } else if((*c1&(B7|B6|B5|B4)) == (B7|B6|B5) &&
  481. ((b == 1) ||
  482. ((b == 2) && (*c2&(B7|B6)) == B7))) {
  483. return 0;
  484. } else if((*c1&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4) &&
  485. ((b == 1) ||
  486. ((b == 2) && (*c2&(B7|B6)) == B7) ||
  487. ((b == 3) && (*c2&(B7|B6)) == B7 && (*c3&(B7|B6)) == B7))) {
  488. return 0;
  489. } else {
  490. return 1;
  491. }
  492. }
  493. int
  494. utf8size(char *s) {
  495. uchar c = *s;
  496. if(~c&B7) {
  497. return 1;
  498. } else if((c&(B7|B6|B5)) == (B7|B6)) {
  499. return 2;
  500. } else if((c&(B7|B6|B5|B4)) == (B7|B6|B5)) {
  501. return 3;
  502. } else {
  503. return 4;
  504. }
  505. }
  506. void
  507. selinit(void) {
  508. memset(&sel.tclick1, 0, sizeof(sel.tclick1));
  509. memset(&sel.tclick2, 0, sizeof(sel.tclick2));
  510. sel.mode = 0;
  511. sel.bx = -1;
  512. sel.clip = NULL;
  513. sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
  514. if(sel.xtarget == None)
  515. sel.xtarget = XA_STRING;
  516. }
  517. static int
  518. x2col(int x) {
  519. x -= borderpx;
  520. x /= xw.cw;
  521. return LIMIT(x, 0, term.col-1);
  522. }
  523. static int
  524. y2row(int y) {
  525. y -= borderpx;
  526. y /= xw.ch;
  527. return LIMIT(y, 0, term.row-1);
  528. }
  529. static inline bool
  530. selected(int x, int y) {
  531. int bx, ex;
  532. if(sel.ey == y && sel.by == y) {
  533. bx = MIN(sel.bx, sel.ex);
  534. ex = MAX(sel.bx, sel.ex);
  535. return BETWEEN(x, bx, ex);
  536. }
  537. return ((sel.b.y < y && y < sel.e.y)
  538. || (y == sel.e.y && x <= sel.e.x))
  539. || (y == sel.b.y && x >= sel.b.x
  540. && (x <= sel.e.x || sel.b.y != sel.e.y));
  541. }
  542. void
  543. getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
  544. if(b)
  545. *b = e->xbutton.button;
  546. *x = x2col(e->xbutton.x);
  547. *y = y2row(e->xbutton.y);
  548. sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
  549. sel.b.y = MIN(sel.by, sel.ey);
  550. sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
  551. sel.e.y = MAX(sel.by, sel.ey);
  552. }
  553. void
  554. mousereport(XEvent *e) {
  555. int x = x2col(e->xbutton.x);
  556. int y = y2row(e->xbutton.y);
  557. int button = e->xbutton.button;
  558. int state = e->xbutton.state;
  559. char buf[] = { '\033', '[', 'M', 0, 32+x+1, 32+y+1 };
  560. static int ob, ox, oy;
  561. /* from urxvt */
  562. if(e->xbutton.type == MotionNotify) {
  563. if(!IS_SET(MODE_MOUSEMOTION) || (x == ox && y == oy))
  564. return;
  565. button = ob + 32;
  566. ox = x, oy = y;
  567. } else if(e->xbutton.type == ButtonRelease || button == AnyButton) {
  568. button = 3;
  569. } else {
  570. button -= Button1;
  571. if(button >= 3)
  572. button += 64 - 3;
  573. if(e->xbutton.type == ButtonPress) {
  574. ob = button;
  575. ox = x, oy = y;
  576. }
  577. }
  578. buf[3] = 32 + button + (state & ShiftMask ? 4 : 0)
  579. + (state & Mod4Mask ? 8 : 0)
  580. + (state & ControlMask ? 16 : 0);
  581. ttywrite(buf, sizeof(buf));
  582. }
  583. void
  584. bpress(XEvent *e) {
  585. if(IS_SET(MODE_MOUSE)) {
  586. mousereport(e);
  587. } else if(e->xbutton.button == Button1) {
  588. if(sel.bx != -1) {
  589. sel.bx = -1;
  590. tsetdirt(sel.b.y, sel.e.y);
  591. draw();
  592. }
  593. sel.mode = 1;
  594. sel.ex = sel.bx = x2col(e->xbutton.x);
  595. sel.ey = sel.by = y2row(e->xbutton.y);
  596. } else if(e->xbutton.button == Button4) {
  597. ttywrite("\031", 1);
  598. } else if(e->xbutton.button == Button5) {
  599. ttywrite("\005", 1);
  600. }
  601. }
  602. void
  603. selcopy(void) {
  604. char *str, *ptr, *p;
  605. int x, y, bufsize, is_selected = 0, size;
  606. Glyph *gp, *last;
  607. if(sel.bx == -1) {
  608. str = NULL;
  609. } else {
  610. bufsize = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
  611. ptr = str = xmalloc(bufsize);
  612. /* append every set & selected glyph to the selection */
  613. for(y = 0; y < term.row; y++) {
  614. gp = &term.line[y][0];
  615. last = gp + term.col;
  616. while(--last >= gp && !(last->state & GLYPH_SET))
  617. /* nothing */;
  618. for(x = 0; gp <= last; x++, ++gp) {
  619. if(!(is_selected = selected(x, y)))
  620. continue;
  621. p = (gp->state & GLYPH_SET) ? gp->c : " ";
  622. size = utf8size(p);
  623. memcpy(ptr, p, size);
  624. ptr += size;
  625. }
  626. /* \n at the end of every selected line except for the last one */
  627. if(is_selected && y < sel.e.y)
  628. *ptr++ = '\n';
  629. }
  630. *ptr = 0;
  631. }
  632. sel.alt = IS_SET(MODE_ALTSCREEN);
  633. xsetsel(str);
  634. }
  635. void
  636. selnotify(XEvent *e) {
  637. ulong nitems, ofs, rem;
  638. int format;
  639. uchar *data;
  640. Atom type;
  641. ofs = 0;
  642. do {
  643. if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
  644. False, AnyPropertyType, &type, &format,
  645. &nitems, &rem, &data)) {
  646. fprintf(stderr, "Clipboard allocation failed\n");
  647. return;
  648. }
  649. ttywrite((const char *) data, nitems * format / 8);
  650. XFree(data);
  651. /* number of 32-bit chunks returned */
  652. ofs += nitems * format / 32;
  653. } while(rem > 0);
  654. }
  655. void
  656. selpaste(void) {
  657. XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
  658. xw.win, CurrentTime);
  659. }
  660. void selclear(XEvent *e) {
  661. if(sel.bx == -1)
  662. return;
  663. sel.bx = -1;
  664. tsetdirt(sel.b.y, sel.e.y);
  665. }
  666. void
  667. selrequest(XEvent *e) {
  668. XSelectionRequestEvent *xsre;
  669. XSelectionEvent xev;
  670. Atom xa_targets, string;
  671. xsre = (XSelectionRequestEvent *) e;
  672. xev.type = SelectionNotify;
  673. xev.requestor = xsre->requestor;
  674. xev.selection = xsre->selection;
  675. xev.target = xsre->target;
  676. xev.time = xsre->time;
  677. /* reject */
  678. xev.property = None;
  679. xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
  680. if(xsre->target == xa_targets) {
  681. /* respond with the supported type */
  682. string = sel.xtarget;
  683. XChangeProperty(xsre->display, xsre->requestor, xsre->property,
  684. XA_ATOM, 32, PropModeReplace,
  685. (uchar *) &string, 1);
  686. xev.property = xsre->property;
  687. } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
  688. XChangeProperty(xsre->display, xsre->requestor, xsre->property,
  689. xsre->target, 8, PropModeReplace,
  690. (uchar *) sel.clip, strlen(sel.clip));
  691. xev.property = xsre->property;
  692. }
  693. /* all done, send a notification to the listener */
  694. if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
  695. fprintf(stderr, "Error sending SelectionNotify event\n");
  696. }
  697. void
  698. xsetsel(char *str) {
  699. /* register the selection for both the clipboard and the primary */
  700. Atom clipboard;
  701. free(sel.clip);
  702. sel.clip = str;
  703. XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
  704. clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
  705. XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
  706. }
  707. void
  708. brelease(XEvent *e) {
  709. struct timeval now;
  710. if(IS_SET(MODE_MOUSE)) {
  711. mousereport(e);
  712. return;
  713. }
  714. if(e->xbutton.button == Button2) {
  715. selpaste();
  716. } else if(e->xbutton.button == Button1) {
  717. sel.mode = 0;
  718. getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
  719. term.dirty[sel.ey] = 1;
  720. if(sel.bx == sel.ex && sel.by == sel.ey) {
  721. sel.bx = -1;
  722. gettimeofday(&now, NULL);
  723. if(TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
  724. /* triple click on the line */
  725. sel.b.x = sel.bx = 0;
  726. sel.e.x = sel.ex = term.col;
  727. sel.b.y = sel.e.y = sel.ey;
  728. selcopy();
  729. } else if(TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
  730. /* double click to select word */
  731. sel.bx = sel.ex;
  732. while(sel.bx > 0 && term.line[sel.ey][sel.bx-1].state & GLYPH_SET &&
  733. term.line[sel.ey][sel.bx-1].c[0] != ' ') {
  734. sel.bx--;
  735. }
  736. sel.b.x = sel.bx;
  737. while(sel.ex < term.col-1 && term.line[sel.ey][sel.ex+1].state & GLYPH_SET &&
  738. term.line[sel.ey][sel.ex+1].c[0] != ' ') {
  739. sel.ex++;
  740. }
  741. sel.e.x = sel.ex;
  742. sel.b.y = sel.e.y = sel.ey;
  743. selcopy();
  744. }
  745. } else {
  746. selcopy();
  747. }
  748. }
  749. memcpy(&sel.tclick2, &sel.tclick1, sizeof(struct timeval));
  750. gettimeofday(&sel.tclick1, NULL);
  751. }
  752. void
  753. bmotion(XEvent *e) {
  754. int starty, endy, oldey, oldex;
  755. if(IS_SET(MODE_MOUSE)) {
  756. mousereport(e);
  757. return;
  758. }
  759. if(sel.mode) {
  760. oldey = sel.ey;
  761. oldex = sel.ex;
  762. getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
  763. if(oldey != sel.ey || oldex != sel.ex) {
  764. starty = MIN(oldey, sel.ey);
  765. endy = MAX(oldey, sel.ey);
  766. tsetdirt(starty, endy);
  767. }
  768. }
  769. }
  770. void
  771. die(const char *errstr, ...) {
  772. va_list ap;
  773. va_start(ap, errstr);
  774. vfprintf(stderr, errstr, ap);
  775. va_end(ap);
  776. exit(EXIT_FAILURE);
  777. }
  778. void
  779. execsh(void) {
  780. char **args;
  781. char *envshell = getenv("SHELL");
  782. const struct passwd *pass = getpwuid(getuid());
  783. char buf[sizeof(long) * 8 + 1];
  784. unsetenv("COLUMNS");
  785. unsetenv("LINES");
  786. unsetenv("TERMCAP");
  787. if(pass) {
  788. setenv("LOGNAME", pass->pw_name, 1);
  789. setenv("USER", pass->pw_name, 1);
  790. setenv("SHELL", pass->pw_shell, 0);
  791. setenv("HOME", pass->pw_dir, 0);
  792. }
  793. snprintf(buf, sizeof(buf), "%lu", xw.win);
  794. setenv("WINDOWID", buf, 1);
  795. signal(SIGCHLD, SIG_DFL);
  796. signal(SIGHUP, SIG_DFL);
  797. signal(SIGINT, SIG_DFL);
  798. signal(SIGQUIT, SIG_DFL);
  799. signal(SIGTERM, SIG_DFL);
  800. signal(SIGALRM, SIG_DFL);
  801. DEFAULT(envshell, shell);
  802. setenv("TERM", termname, 1);
  803. args = opt_cmd ? opt_cmd : (char *[]){envshell, "-i", NULL};
  804. execvp(args[0], args);
  805. exit(EXIT_FAILURE);
  806. }
  807. void
  808. sigchld(int a) {
  809. int stat = 0;
  810. if(waitpid(pid, &stat, 0) < 0)
  811. die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
  812. if(WIFEXITED(stat)) {
  813. exit(WEXITSTATUS(stat));
  814. } else {
  815. exit(EXIT_FAILURE);
  816. }
  817. }
  818. void
  819. ttynew(void) {
  820. int m, s;
  821. struct winsize w = {term.row, term.col, 0, 0};
  822. /* seems to work fine on linux, openbsd and freebsd */
  823. if(openpty(&m, &s, NULL, NULL, &w) < 0)
  824. die("openpty failed: %s\n", SERRNO);
  825. switch(pid = fork()) {
  826. case -1:
  827. die("fork failed\n");
  828. break;
  829. case 0:
  830. setsid(); /* create a new process group */
  831. dup2(s, STDIN_FILENO);
  832. dup2(s, STDOUT_FILENO);
  833. dup2(s, STDERR_FILENO);
  834. if(ioctl(s, TIOCSCTTY, NULL) < 0)
  835. die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
  836. close(s);
  837. close(m);
  838. execsh();
  839. break;
  840. default:
  841. close(s);
  842. cmdfd = m;
  843. signal(SIGCHLD, sigchld);
  844. if(opt_io) {
  845. iofd = (!strcmp(opt_io, "-")) ?
  846. STDOUT_FILENO :
  847. open(opt_io, O_WRONLY | O_CREAT, 0666);
  848. if(iofd < 0) {
  849. fprintf(stderr, "Error opening %s:%s\n",
  850. opt_io, strerror(errno));
  851. }
  852. }
  853. }
  854. }
  855. void
  856. dump(char c) {
  857. static int col;
  858. fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
  859. if(++col % 10 == 0)
  860. fprintf(stderr, "\n");
  861. }
  862. void
  863. ttyread(void) {
  864. static char buf[BUFSIZ];
  865. static int buflen = 0;
  866. char *ptr;
  867. char s[UTF_SIZ];
  868. int charsize; /* size of utf8 char in bytes */
  869. long utf8c;
  870. int ret;
  871. /* append read bytes to unprocessed bytes */
  872. if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
  873. die("Couldn't read from shell: %s\n", SERRNO);
  874. /* process every complete utf8 char */
  875. buflen += ret;
  876. ptr = buf;
  877. while(buflen >= UTF_SIZ || isfullutf8(ptr,buflen)) {
  878. charsize = utf8decode(ptr, &utf8c);
  879. utf8encode(&utf8c, s);
  880. tputc(s, charsize);
  881. ptr += charsize;
  882. buflen -= charsize;
  883. }
  884. /* keep any uncomplete utf8 char for the next call */
  885. memmove(buf, ptr, buflen);
  886. }
  887. void
  888. ttywrite(const char *s, size_t n) {
  889. if(write(cmdfd, s, n) == -1)
  890. die("write error on tty: %s\n", SERRNO);
  891. }
  892. void
  893. ttyresize(void) {
  894. struct winsize w;
  895. w.ws_row = term.row;
  896. w.ws_col = term.col;
  897. w.ws_xpixel = xw.tw;
  898. w.ws_ypixel = xw.th;
  899. if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
  900. fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
  901. }
  902. void
  903. tsetdirt(int top, int bot) {
  904. int i;
  905. LIMIT(top, 0, term.row-1);
  906. LIMIT(bot, 0, term.row-1);
  907. for(i = top; i <= bot; i++)
  908. term.dirty[i] = 1;
  909. }
  910. void
  911. tfulldirt(void) {
  912. tsetdirt(0, term.row-1);
  913. }
  914. void
  915. tcursor(int mode) {
  916. static TCursor c;
  917. if(mode == CURSOR_SAVE) {
  918. c = term.c;
  919. } else if(mode == CURSOR_LOAD) {
  920. term.c = c;
  921. tmoveto(c.x, c.y);
  922. }
  923. }
  924. void
  925. treset(void) {
  926. uint i;
  927. term.c = (TCursor){{
  928. .mode = ATTR_NULL,
  929. .fg = defaultfg,
  930. .bg = defaultbg
  931. }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
  932. memset(term.tabs, 0, term.col * sizeof(*term.tabs));
  933. for(i = tabspaces; i < term.col; i += tabspaces)
  934. term.tabs[i] = 1;
  935. term.top = 0;
  936. term.bot = term.row - 1;
  937. term.mode = MODE_WRAP;
  938. tclearregion(0, 0, term.col-1, term.row-1);
  939. tmoveto(0, 0);
  940. tcursor(CURSOR_SAVE);
  941. }
  942. void
  943. tnew(int col, int row) {
  944. /* set screen size */
  945. term.row = row;
  946. term.col = col;
  947. term.line = xmalloc(term.row * sizeof(Line));
  948. term.alt = xmalloc(term.row * sizeof(Line));
  949. term.dirty = xmalloc(term.row * sizeof(*term.dirty));
  950. term.tabs = xmalloc(term.col * sizeof(*term.tabs));
  951. for(row = 0; row < term.row; row++) {
  952. term.line[row] = xmalloc(term.col * sizeof(Glyph));
  953. term.alt [row] = xmalloc(term.col * sizeof(Glyph));
  954. term.dirty[row] = 0;
  955. }
  956. memset(term.tabs, 0, term.col * sizeof(*term.tabs));
  957. /* setup screen */
  958. treset();
  959. }
  960. void
  961. tswapscreen(void) {
  962. Line *tmp = term.line;
  963. term.line = term.alt;
  964. term.alt = tmp;
  965. term.mode ^= MODE_ALTSCREEN;
  966. tfulldirt();
  967. }
  968. void
  969. tscrolldown(int orig, int n) {
  970. int i;
  971. Line temp;
  972. LIMIT(n, 0, term.bot-orig+1);
  973. tclearregion(0, term.bot-n+1, term.col-1, term.bot);
  974. for(i = term.bot; i >= orig+n; i--) {
  975. temp = term.line[i];
  976. term.line[i] = term.line[i-n];
  977. term.line[i-n] = temp;
  978. term.dirty[i] = 1;
  979. term.dirty[i-n] = 1;
  980. }
  981. selscroll(orig, n);
  982. }
  983. void
  984. tscrollup(int orig, int n) {
  985. int i;
  986. Line temp;
  987. LIMIT(n, 0, term.bot-orig+1);
  988. tclearregion(0, orig, term.col-1, orig+n-1);
  989. for(i = orig; i <= term.bot-n; i++) {
  990. temp = term.line[i];
  991. term.line[i] = term.line[i+n];
  992. term.line[i+n] = temp;
  993. term.dirty[i] = 1;
  994. term.dirty[i+n] = 1;
  995. }
  996. selscroll(orig, -n);
  997. }
  998. void
  999. selscroll(int orig, int n) {
  1000. if(sel.bx == -1)
  1001. return;
  1002. if(BETWEEN(sel.by, orig, term.bot) || BETWEEN(sel.ey, orig, term.bot)) {
  1003. if((sel.by += n) > term.bot || (sel.ey += n) < term.top) {
  1004. sel.bx = -1;
  1005. return;
  1006. }
  1007. if(sel.by < term.top) {
  1008. sel.by = term.top;
  1009. sel.bx = 0;
  1010. }
  1011. if(sel.ey > term.bot) {
  1012. sel.ey = term.bot;
  1013. sel.ex = term.col;
  1014. }
  1015. sel.b.y = sel.by, sel.b.x = sel.bx;
  1016. sel.e.y = sel.ey, sel.e.x = sel.ex;
  1017. }
  1018. }
  1019. void
  1020. tnewline(int first_col) {
  1021. int y = term.c.y;
  1022. if(y == term.bot) {
  1023. tscrollup(term.top, 1);
  1024. } else {
  1025. y++;
  1026. }
  1027. tmoveto(first_col ? 0 : term.c.x, y);
  1028. }
  1029. void
  1030. csiparse(void) {
  1031. /* int noarg = 1; */
  1032. char *p = csiescseq.buf;
  1033. csiescseq.narg = 0;
  1034. if(*p == '?')
  1035. csiescseq.priv = 1, p++;
  1036. while(p < csiescseq.buf+csiescseq.len) {
  1037. while(isdigit(*p)) {
  1038. csiescseq.arg[csiescseq.narg] *= 10;
  1039. csiescseq.arg[csiescseq.narg] += *p++ - '0'/*, noarg = 0 */;
  1040. }
  1041. if(*p == ';' && csiescseq.narg+1 < ESC_ARG_SIZ) {
  1042. csiescseq.narg++, p++;
  1043. } else {
  1044. csiescseq.mode = *p;
  1045. csiescseq.narg++;
  1046. return;
  1047. }
  1048. }
  1049. }
  1050. /* for absolute user moves, when decom is set */
  1051. void
  1052. tmoveato(int x, int y) {
  1053. tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
  1054. }
  1055. void
  1056. tmoveto(int x, int y) {
  1057. int miny, maxy;
  1058. if(term.c.state & CURSOR_ORIGIN) {
  1059. miny = term.top;
  1060. maxy = term.bot;
  1061. } else {
  1062. miny = 0;
  1063. maxy = term.row - 1;
  1064. }
  1065. LIMIT(x, 0, term.col-1);
  1066. LIMIT(y, miny, maxy);
  1067. term.c.state &= ~CURSOR_WRAPNEXT;
  1068. term.c.x = x;
  1069. term.c.y = y;
  1070. }
  1071. void
  1072. tsetchar(char *c, Glyph *attr, int x, int y) {
  1073. static char *vt100_0[62] = { /* 0x41 - 0x7e */
  1074. "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
  1075. 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
  1076. 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
  1077. 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
  1078. "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
  1079. "␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
  1080. "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
  1081. "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
  1082. };
  1083. /*
  1084. * The table is proudly stolen from rxvt.
  1085. */
  1086. if(attr->mode & ATTR_GFX) {
  1087. if(c[0] >= 0x41 && c[0] <= 0x7e
  1088. && vt100_0[c[0] - 0x41]) {
  1089. c = vt100_0[c[0] - 0x41];
  1090. }
  1091. }
  1092. term.dirty[y] = 1;
  1093. term.line[y][x] = *attr;
  1094. memcpy(term.line[y][x].c, c, UTF_SIZ);
  1095. term.line[y][x].state |= GLYPH_SET;
  1096. }
  1097. void
  1098. tclearregion(int x1, int y1, int x2, int y2) {
  1099. int x, y, temp;
  1100. if(x1 > x2)
  1101. temp = x1, x1 = x2, x2 = temp;
  1102. if(y1 > y2)
  1103. temp = y1, y1 = y2, y2 = temp;
  1104. LIMIT(x1, 0, term.col-1);
  1105. LIMIT(x2, 0, term.col-1);
  1106. LIMIT(y1, 0, term.row-1);
  1107. LIMIT(y2, 0, term.row-1);
  1108. for(y = y1; y <= y2; y++) {
  1109. term.dirty[y] = 1;
  1110. for(x = x1; x <= x2; x++)
  1111. term.line[y][x].state = 0;
  1112. }
  1113. }
  1114. void
  1115. tdeletechar(int n) {
  1116. int src = term.c.x + n;
  1117. int dst = term.c.x;
  1118. int size = term.col - src;
  1119. term.dirty[term.c.y] = 1;
  1120. if(src >= term.col) {
  1121. tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
  1122. return;
  1123. }
  1124. memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
  1125. size * sizeof(Glyph));
  1126. tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
  1127. }
  1128. void
  1129. tinsertblank(int n) {
  1130. int src = term.c.x;
  1131. int dst = src + n;
  1132. int size = term.col - dst;
  1133. term.dirty[term.c.y] = 1;
  1134. if(dst >= term.col) {
  1135. tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
  1136. return;
  1137. }
  1138. memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
  1139. size * sizeof(Glyph));
  1140. tclearregion(src, term.c.y, dst - 1, term.c.y);
  1141. }
  1142. void
  1143. tinsertblankline(int n) {
  1144. if(term.c.y < term.top || term.c.y > term.bot)
  1145. return;
  1146. tscrolldown(term.c.y, n);
  1147. }
  1148. void
  1149. tdeleteline(int n) {
  1150. if(term.c.y < term.top || term.c.y > term.bot)
  1151. return;
  1152. tscrollup(term.c.y, n);
  1153. }
  1154. void
  1155. tsetattr(int *attr, int l) {
  1156. int i;
  1157. for(i = 0; i < l; i++) {
  1158. switch(attr[i]) {
  1159. case 0:
  1160. term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD \
  1161. | ATTR_ITALIC | ATTR_BLINK);
  1162. term.c.attr.fg = defaultfg;
  1163. term.c.attr.bg = defaultbg;
  1164. break;
  1165. case 1:
  1166. term.c.attr.mode |= ATTR_BOLD;
  1167. break;
  1168. case 3: /* enter standout (highlight) */
  1169. term.c.attr.mode |= ATTR_ITALIC;
  1170. break;
  1171. case 4:
  1172. term.c.attr.mode |= ATTR_UNDERLINE;
  1173. break;
  1174. case 5:
  1175. term.c.attr.mode |= ATTR_BLINK;
  1176. break;
  1177. case 7:
  1178. term.c.attr.mode |= ATTR_REVERSE;
  1179. break;
  1180. case 21:
  1181. case 22:
  1182. term.c.attr.mode &= ~ATTR_BOLD;
  1183. break;
  1184. case 23: /* leave standout (highlight) mode */
  1185. term.c.attr.mode &= ~ATTR_ITALIC;
  1186. break;
  1187. case 24:
  1188. term.c.attr.mode &= ~ATTR_UNDERLINE;
  1189. break;
  1190. case 25:
  1191. term.c.attr.mode &= ~ATTR_BLINK;
  1192. break;
  1193. case 27:
  1194. term.c.attr.mode &= ~ATTR_REVERSE;
  1195. break;
  1196. case 38:
  1197. if(i + 2 < l && attr[i + 1] == 5) {
  1198. i += 2;
  1199. if(BETWEEN(attr[i], 0, 255)) {
  1200. term.c.attr.fg = attr[i];
  1201. } else {
  1202. fprintf(stderr,
  1203. "erresc: bad fgcolor %d\n",
  1204. attr[i]);
  1205. }
  1206. } else {
  1207. fprintf(stderr,
  1208. "erresc(38): gfx attr %d unknown\n",
  1209. attr[i]);
  1210. }
  1211. break;
  1212. case 39:
  1213. term.c.attr.fg = defaultfg;
  1214. break;
  1215. case 48:
  1216. if(i + 2 < l && attr[i + 1] == 5) {
  1217. i += 2;
  1218. if(BETWEEN(attr[i], 0, 255)) {
  1219. term.c.attr.bg = attr[i];
  1220. } else {
  1221. fprintf(stderr,
  1222. "erresc: bad bgcolor %d\n",
  1223. attr[i]);
  1224. }
  1225. } else {
  1226. fprintf(stderr,
  1227. "erresc(48): gfx attr %d unknown\n",
  1228. attr[i]);
  1229. }
  1230. break;
  1231. case 49:
  1232. term.c.attr.bg = defaultbg;
  1233. break;
  1234. default:
  1235. if(BETWEEN(attr[i], 30, 37)) {
  1236. term.c.attr.fg = attr[i] - 30;
  1237. } else if(BETWEEN(attr[i], 40, 47)) {
  1238. term.c.attr.bg = attr[i] - 40;
  1239. } else if(BETWEEN(attr[i], 90, 97)) {
  1240. term.c.attr.fg = attr[i] - 90 + 8;
  1241. } else if(BETWEEN(attr[i], 100, 107)) {
  1242. term.c.attr.bg = attr[i] - 100 + 8;
  1243. } else {
  1244. fprintf(stderr,
  1245. "erresc(default): gfx attr %d unknown\n",
  1246. attr[i]), csidump();
  1247. }
  1248. break;
  1249. }
  1250. }
  1251. }
  1252. void
  1253. tsetscroll(int t, int b) {
  1254. int temp;
  1255. LIMIT(t, 0, term.row-1);
  1256. LIMIT(b, 0, term.row-1);
  1257. if(t > b) {
  1258. temp = t;
  1259. t = b;
  1260. b = temp;
  1261. }
  1262. term.top = t;
  1263. term.bot = b;
  1264. }
  1265. #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
  1266. void
  1267. tsetmode(bool priv, bool set, int *args, int narg) {
  1268. int *lim, mode;
  1269. bool alt;
  1270. for(lim = args + narg; args < lim; ++args) {
  1271. if(priv) {
  1272. switch(*args) {
  1273. break;
  1274. case 1: /* DECCKM -- Cursor key */
  1275. MODBIT(term.mode, set, MODE_APPKEYPAD);
  1276. break;
  1277. case 5: /* DECSCNM -- Reverse video */
  1278. mode = term.mode;
  1279. MODBIT(term.mode, set, MODE_REVERSE);
  1280. if(mode != term.mode)
  1281. redraw();
  1282. break;
  1283. case 6: /* DECOM -- Origin */
  1284. MODBIT(term.c.state, set, CURSOR_ORIGIN);
  1285. tmoveato(0, 0);
  1286. break;
  1287. case 7: /* DECAWM -- Auto wrap */
  1288. MODBIT(term.mode, set, MODE_WRAP);
  1289. break;
  1290. case 0: /* Error (IGNORED) */
  1291. case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
  1292. case 3: /* DECCOLM -- Column (IGNORED) */
  1293. case 4: /* DECSCLM -- Scroll (IGNORED) */
  1294. case 8: /* DECARM -- Auto repeat (IGNORED) */
  1295. case 18: /* DECPFF -- Printer feed (IGNORED) */
  1296. case 19: /* DECPEX -- Printer extent (IGNORED) */
  1297. case 42: /* DECNRCM -- National characters (IGNORED) */
  1298. case 12: /* att610 -- Start blinking cursor (IGNORED) */
  1299. break;
  1300. case 25: /* DECTCEM -- Text Cursor Enable Mode */
  1301. MODBIT(term.mode, !set, MODE_HIDE);
  1302. break;
  1303. case 1000: /* 1000,1002: enable xterm mouse report */
  1304. MODBIT(term.mode, set, MODE_MOUSEBTN);
  1305. break;
  1306. case 1002:
  1307. MODBIT(term.mode, set, MODE_MOUSEMOTION);
  1308. break;
  1309. case 1049: /* = 1047 and 1048 */
  1310. case 47:
  1311. case 1047: {
  1312. alt = IS_SET(MODE_ALTSCREEN) != 0;
  1313. if(alt)
  1314. tclearregion(0, 0, term.col-1, term.row-1);
  1315. if(set ^ alt) /* set is always 1 or 0 */
  1316. tswapscreen();
  1317. if(*args != 1049)
  1318. break;
  1319. }
  1320. /* pass through */
  1321. case 1048:
  1322. tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
  1323. break;
  1324. default:
  1325. fprintf(stderr,
  1326. "erresc: unknown private set/reset mode %d\n",
  1327. *args);
  1328. break;
  1329. }
  1330. } else {
  1331. switch(*args) {
  1332. case 0: /* Error (IGNORED) */
  1333. break;
  1334. case 2: /* KAM -- keyboard action */
  1335. MODBIT(term.mode, set, MODE_KBDLOCK);
  1336. break;
  1337. case 4: /* IRM -- Insertion-replacement */
  1338. MODBIT(term.mode, set, MODE_INSERT);
  1339. break;
  1340. case 12: /* XXX: SRM -- Send/Receive */
  1341. break;
  1342. case 20: /* LNM -- Linefeed/new line */
  1343. MODBIT(term.mode, set, MODE_CRLF);
  1344. break;
  1345. default:
  1346. fprintf(stderr,
  1347. "erresc: unknown set/reset mode %d\n",
  1348. *args);
  1349. break;
  1350. }
  1351. }
  1352. }
  1353. }
  1354. #undef MODBIT
  1355. void
  1356. csihandle(void) {
  1357. switch(csiescseq.mode) {
  1358. default:
  1359. unknown:
  1360. fprintf(stderr, "erresc: unknown csi ");
  1361. csidump();
  1362. /* die(""); */
  1363. break;
  1364. case '@': /* ICH -- Insert <n> blank char */
  1365. DEFAULT(csiescseq.arg[0], 1);
  1366. tinsertblank(csiescseq.arg[0]);
  1367. break;
  1368. case 'A': /* CUU -- Cursor <n> Up */
  1369. DEFAULT(csiescseq.arg[0], 1);
  1370. tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
  1371. break;
  1372. case 'B': /* CUD -- Cursor <n> Down */
  1373. case 'e': /* VPR --Cursor <n> Down */
  1374. DEFAULT(csiescseq.arg[0], 1);
  1375. tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
  1376. break;
  1377. case 'c': /* DA -- Device Attributes */
  1378. if(csiescseq.arg[0] == 0)
  1379. ttywrite(VT102ID, sizeof(VT102ID) - 1);
  1380. break;
  1381. case 'C': /* CUF -- Cursor <n> Forward */
  1382. case 'a': /* HPR -- Cursor <n> Forward */
  1383. DEFAULT(csiescseq.arg[0], 1);
  1384. tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
  1385. break;
  1386. case 'D': /* CUB -- Cursor <n> Backward */
  1387. DEFAULT(csiescseq.arg[0], 1);
  1388. tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
  1389. break;
  1390. case 'E': /* CNL -- Cursor <n> Down and first col */
  1391. DEFAULT(csiescseq.arg[0], 1);
  1392. tmoveto(0, term.c.y+csiescseq.arg[0]);
  1393. break;
  1394. case 'F': /* CPL -- Cursor <n> Up and first col */
  1395. DEFAULT(csiescseq.arg[0], 1);
  1396. tmoveto(0, term.c.y-csiescseq.arg[0]);
  1397. break;
  1398. case 'g': /* TBC -- Tabulation clear */
  1399. switch (csiescseq.arg[0]) {
  1400. case 0: /* clear current tab stop */
  1401. term.tabs[term.c.x] = 0;
  1402. break;
  1403. case 3: /* clear all the tabs */
  1404. memset(term.tabs, 0, term.col * sizeof(*term.tabs));
  1405. break;
  1406. default:
  1407. goto unknown;
  1408. }
  1409. break;
  1410. case 'G': /* CHA -- Move to <col> */
  1411. case '`': /* HPA */
  1412. DEFAULT(csiescseq.arg[0], 1);
  1413. tmoveto(csiescseq.arg[0]-1, term.c.y);
  1414. break;
  1415. case 'H': /* CUP -- Move to <row> <col> */
  1416. case 'f': /* HVP */
  1417. DEFAULT(csiescseq.arg[0], 1);
  1418. DEFAULT(csiescseq.arg[1], 1);
  1419. tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
  1420. break;
  1421. case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
  1422. DEFAULT(csiescseq.arg[0], 1);
  1423. while(csiescseq.arg[0]--)
  1424. tputtab(1);
  1425. break;
  1426. case 'J': /* ED -- Clear screen */
  1427. sel.bx = -1;
  1428. switch(csiescseq.arg[0]) {
  1429. case 0: /* below */
  1430. tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
  1431. if(term.c.y < term.row-1)
  1432. tclearregion(0, term.c.y+1, term.col-1, term.row-1);
  1433. break;
  1434. case 1: /* above */
  1435. if(term.c.y > 1)
  1436. tclearregion(0, 0, term.col-1, term.c.y-1);
  1437. tclearregion(0, term.c.y, term.c.x, term.c.y);
  1438. break;
  1439. case 2: /* all */
  1440. tclearregion(0, 0, term.col-1, term.row-1);
  1441. break;
  1442. default:
  1443. goto unknown;
  1444. }
  1445. break;
  1446. case 'K': /* EL -- Clear line */
  1447. switch(csiescseq.arg[0]) {
  1448. case 0: /* right */
  1449. tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
  1450. break;
  1451. case 1: /* left */
  1452. tclearregion(0, term.c.y, term.c.x, term.c.y);
  1453. break;
  1454. case 2: /* all */
  1455. tclearregion(0, term.c.y, term.col-1, term.c.y);
  1456. break;
  1457. }
  1458. break;
  1459. case 'S': /* SU -- Scroll <n> line up */
  1460. DEFAULT(csiescseq.arg[0], 1);
  1461. tscrollup(term.top, csiescseq.arg[0]);
  1462. break;
  1463. case 'T': /* SD -- Scroll <n> line down */
  1464. DEFAULT(csiescseq.arg[0], 1);
  1465. tscrolldown(term.top, csiescseq.arg[0]);
  1466. break;
  1467. case 'L': /* IL -- Insert <n> blank lines */
  1468. DEFAULT(csiescseq.arg[0], 1);
  1469. tinsertblankline(csiescseq.arg[0]);
  1470. break;
  1471. case 'l': /* RM -- Reset Mode */
  1472. tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
  1473. break;
  1474. case 'M': /* DL -- Delete <n> lines */
  1475. DEFAULT(csiescseq.arg[0], 1);
  1476. tdeleteline(csiescseq.arg[0]);
  1477. break;
  1478. case 'X': /* ECH -- Erase <n> char */
  1479. DEFAULT(csiescseq.arg[0], 1);
  1480. tclearregion(term.c.x, term.c.y, term.c.x + csiescseq.arg[0], term.c.y);
  1481. break;
  1482. case 'P': /* DCH -- Delete <n> char */
  1483. DEFAULT(csiescseq.arg[0], 1);
  1484. tdeletechar(csiescseq.arg[0]);
  1485. break;
  1486. case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
  1487. DEFAULT(csiescseq.arg[0], 1);
  1488. while(csiescseq.arg[0]--)
  1489. tputtab(0);
  1490. break;
  1491. case 'd': /* VPA -- Move to <row> */
  1492. DEFAULT(csiescseq.arg[0], 1);
  1493. tmoveato(term.c.x, csiescseq.arg[0]-1);
  1494. break;
  1495. case 'h': /* SM -- Set terminal mode */
  1496. tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
  1497. break;
  1498. case 'm': /* SGR -- Terminal attribute (color) */
  1499. tsetattr(csiescseq.arg, csiescseq.narg);
  1500. break;
  1501. case 'r': /* DECSTBM -- Set Scrolling Region */
  1502. if(csiescseq.priv) {
  1503. goto unknown;
  1504. } else {
  1505. DEFAULT(csiescseq.arg[0], 1);
  1506. DEFAULT(csiescseq.arg[1], term.row);
  1507. tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
  1508. tmoveato(0, 0);
  1509. }
  1510. break;
  1511. case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
  1512. tcursor(CURSOR_SAVE);
  1513. break;
  1514. case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
  1515. tcursor(CURSOR_LOAD);
  1516. break;
  1517. }
  1518. }
  1519. void
  1520. csidump(void) {
  1521. int i;
  1522. uint c;
  1523. printf("ESC[");
  1524. for(i = 0; i < csiescseq.len; i++) {
  1525. c = csiescseq.buf[i] & 0xff;
  1526. if(isprint(c)) {
  1527. putchar(c);
  1528. } else if(c == '\n') {
  1529. printf("(\\n)");
  1530. } else if(c == '\r') {
  1531. printf("(\\r)");
  1532. } else if(c == 0x1b) {
  1533. printf("(\\e)");
  1534. } else {
  1535. printf("(%02x)", c);
  1536. }
  1537. }
  1538. putchar('\n');
  1539. }
  1540. void
  1541. csireset(void) {
  1542. memset(&csiescseq, 0, sizeof(csiescseq));
  1543. }
  1544. void
  1545. strhandle(void) {
  1546. char *p;
  1547. /*
  1548. * TODO: make this being useful in case of color palette change.
  1549. */
  1550. strparse();
  1551. p = strescseq.buf;
  1552. switch(strescseq.type) {
  1553. case ']': /* OSC -- Operating System Command */
  1554. switch(p[0]) {
  1555. case '0':
  1556. case '1':
  1557. case '2':
  1558. /*
  1559. * TODO: Handle special chars in string, like umlauts.
  1560. */
  1561. if(p[1] == ';') {
  1562. XStoreName(xw.dpy, xw.win, strescseq.buf+2);
  1563. }
  1564. break;
  1565. case ';':
  1566. XStoreName(xw.dpy, xw.win, strescseq.buf+1);
  1567. break;
  1568. case '4': /* TODO: Set color (arg0) to "rgb:%hexr/$hexg/$hexb" (arg1) */
  1569. break;
  1570. default:
  1571. fprintf(stderr, "erresc: unknown str ");
  1572. strdump();
  1573. break;
  1574. }
  1575. break;
  1576. case 'k': /* old title set compatibility */
  1577. XStoreName(xw.dpy, xw.win, strescseq.buf);
  1578. break;
  1579. case 'P': /* DSC -- Device Control String */
  1580. case '_': /* APC -- Application Program Command */
  1581. case '^': /* PM -- Privacy Message */
  1582. default:
  1583. fprintf(stderr, "erresc: unknown str ");
  1584. strdump();
  1585. /* die(""); */
  1586. break;
  1587. }
  1588. }
  1589. void
  1590. strparse(void) {
  1591. /*
  1592. * TODO: Implement parsing like for CSI when required.
  1593. * Format: ESC type cmd ';' arg0 [';' argn] ESC \
  1594. */
  1595. return;
  1596. }
  1597. void
  1598. strdump(void) {
  1599. int i;
  1600. uint c;
  1601. printf("ESC%c", strescseq.type);
  1602. for(i = 0; i < strescseq.len; i++) {
  1603. c = strescseq.buf[i] & 0xff;
  1604. if(isprint(c)) {
  1605. putchar(c);
  1606. } else if(c == '\n') {
  1607. printf("(\\n)");
  1608. } else if(c == '\r') {
  1609. printf("(\\r)");
  1610. } else if(c == 0x1b) {
  1611. printf("(\\e)");
  1612. } else {
  1613. printf("(%02x)", c);
  1614. }
  1615. }
  1616. printf("ESC\\\n");
  1617. }
  1618. void
  1619. strreset(void) {
  1620. memset(&strescseq, 0, sizeof(strescseq));
  1621. }
  1622. void
  1623. tputtab(bool forward) {
  1624. uint x = term.c.x;
  1625. if(forward) {
  1626. if(x == term.col)
  1627. return;
  1628. for(++x; x < term.col && !term.tabs[x]; ++x)
  1629. /* nothing */ ;
  1630. } else {
  1631. if(x == 0)
  1632. return;
  1633. for(--x; x > 0 && !term.tabs[x]; --x)
  1634. /* nothing */ ;
  1635. }
  1636. tmoveto(x, term.c.y);
  1637. }
  1638. void
  1639. tputc(char *c, int len) {
  1640. uchar ascii = *c;
  1641. bool control = ascii < '\x20' || ascii == 0177;
  1642. if(iofd != -1) {
  1643. if (xwrite(iofd, c, len) < 0) {
  1644. fprintf(stderr, "Error writting in %s:%s\n",
  1645. opt_io, strerror(errno));
  1646. close(iofd);
  1647. iofd = -1;
  1648. }
  1649. }
  1650. /*
  1651. * STR sequences must be checked before anything else
  1652. * because it can use some control codes as part of the sequence.
  1653. */
  1654. if(term.esc & ESC_STR) {
  1655. switch(ascii) {
  1656. case '\033':
  1657. term.esc = ESC_START | ESC_STR_END;
  1658. break;
  1659. case '\a': /* backwards compatibility to xterm */
  1660. term.esc = 0;
  1661. strhandle();
  1662. break;
  1663. default:
  1664. strescseq.buf[strescseq.len++] = ascii;
  1665. if(strescseq.len+1 >= STR_BUF_SIZ) {
  1666. term.esc = 0;
  1667. strhandle();
  1668. }
  1669. }
  1670. return;
  1671. }
  1672. /*
  1673. * Actions of control codes must be performed as soon they arrive
  1674. * because they can be embedded inside a control sequence, and
  1675. * they must not cause conflicts with sequences.
  1676. */
  1677. if(control) {
  1678. switch(ascii) {
  1679. case '\t': /* HT */
  1680. tputtab(1);
  1681. return;
  1682. case '\b': /* BS */
  1683. tmoveto(term.c.x-1, term.c.y);
  1684. return;
  1685. case '\r': /* CR */
  1686. tmoveto(0, term.c.y);
  1687. return;
  1688. case '\f': /* LF */
  1689. case '\v': /* VT */
  1690. case '\n': /* LF */
  1691. /* go to first col if the mode is set */
  1692. tnewline(IS_SET(MODE_CRLF));
  1693. return;
  1694. case '\a': /* BEL */
  1695. if(!(xw.state & WIN_FOCUSED))
  1696. xseturgency(1);
  1697. return;
  1698. case '\033': /* ESC */
  1699. csireset();
  1700. term.esc = ESC_START;
  1701. return;
  1702. case '\016': /* SO */
  1703. term.c.attr.mode |= ATTR_GFX;
  1704. return;
  1705. case '\017': /* SI */
  1706. term.c.attr.mode &= ~ATTR_GFX;
  1707. return;
  1708. case '\032': /* SUB */
  1709. case '\030': /* CAN */
  1710. csireset();
  1711. return;
  1712. case '\005': /* ENQ (IGNORED) */
  1713. case '\000': /* NUL (IGNORED) */
  1714. case '\021': /* XON (IGNORED) */
  1715. case '\023': /* XOFF (IGNORED) */
  1716. case 0177: /* DEL (IGNORED) */
  1717. return;
  1718. }
  1719. } else if(term.esc & ESC_START) {
  1720. if(term.esc & ESC_CSI) {
  1721. csiescseq.buf[csiescseq.len++] = ascii;
  1722. if(BETWEEN(ascii, 0x40, 0x7E)
  1723. || csiescseq.len >= ESC_BUF_SIZ) {
  1724. term.esc = 0;
  1725. csiparse(), csihandle();
  1726. }
  1727. } else if(term.esc & ESC_STR_END) {
  1728. term.esc = 0;
  1729. if(ascii == '\\')
  1730. strhandle();
  1731. } else if(term.esc & ESC_ALTCHARSET) {
  1732. switch(ascii) {
  1733. case '0': /* Line drawing set */
  1734. term.c.attr.mode |= ATTR_GFX;
  1735. break;
  1736. case 'B': /* USASCII */
  1737. term.c.attr.mode &= ~ATTR_GFX;
  1738. break;
  1739. case 'A': /* UK (IGNORED) */
  1740. case '<': /* multinational charset (IGNORED) */
  1741. case '5': /* Finnish (IGNORED) */
  1742. case 'C': /* Finnish (IGNORED) */
  1743. case 'K': /* German (IGNORED) */
  1744. break;
  1745. default:
  1746. fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
  1747. }
  1748. term.esc = 0;
  1749. } else if(term.esc & ESC_TEST) {
  1750. if(ascii == '8') { /* DEC screen alignment test. */
  1751. char E[UTF_SIZ] = "E";
  1752. int x, y;
  1753. for(x = 0; x < term.col; ++x) {
  1754. for(y = 0; y < term.row; ++y)
  1755. tsetchar(E, &term.c.attr, x, y);
  1756. }
  1757. }
  1758. term.esc = 0;
  1759. } else {
  1760. switch(ascii) {
  1761. case '[':
  1762. term.esc |= ESC_CSI;
  1763. break;
  1764. case '#':
  1765. term.esc |= ESC_TEST;
  1766. break;
  1767. case 'P': /* DCS -- Device Control String */
  1768. case '_': /* APC -- Application Program Command */
  1769. case '^': /* PM -- Privacy Message */
  1770. case ']': /* OSC -- Operating System Command */
  1771. case 'k': /* old title set compatibility */
  1772. strreset();
  1773. strescseq.type = ascii;
  1774. term.esc |= ESC_STR;
  1775. break;
  1776. case '(': /* set primary charset G0 */
  1777. term.esc |= ESC_ALTCHARSET;
  1778. break;
  1779. case ')': /* set secondary charset G1 (IGNORED) */
  1780. case '*': /* set tertiary charset G2 (IGNORED) */
  1781. case '+': /* set quaternary charset G3 (IGNORED) */
  1782. term.esc = 0;
  1783. break;
  1784. case 'D': /* IND -- Linefeed */
  1785. if(term.c.y == term.bot) {
  1786. tscrollup(term.top, 1);
  1787. } else {
  1788. tmoveto(term.c.x, term.c.y+1);
  1789. }
  1790. term.esc = 0;
  1791. break;
  1792. case 'E': /* NEL -- Next line */
  1793. tnewline(1); /* always go to first col */
  1794. term.esc = 0;
  1795. break;
  1796. case 'H': /* HTS -- Horizontal tab stop */
  1797. term.tabs[term.c.x] = 1;
  1798. term.esc = 0;
  1799. break;
  1800. case 'M': /* RI -- Reverse index */
  1801. if(term.c.y == term.top) {
  1802. tscrolldown(term.top, 1);
  1803. } else {
  1804. tmoveto(term.c.x, term.c.y-1);
  1805. }
  1806. term.esc = 0;
  1807. break;
  1808. case 'Z': /* DECID -- Identify Terminal */
  1809. ttywrite(VT102ID, sizeof(VT102ID) - 1);
  1810. term.esc = 0;
  1811. break;
  1812. case 'c': /* RIS -- Reset to inital state */
  1813. treset();
  1814. term.esc = 0;
  1815. xresettitle();
  1816. break;
  1817. case '=': /* DECPAM -- Application keypad */
  1818. term.mode |= MODE_APPKEYPAD;
  1819. term.esc = 0;
  1820. break;
  1821. case '>': /* DECPNM -- Normal keypad */
  1822. term.mode &= ~MODE_APPKEYPAD;
  1823. term.esc = 0;
  1824. break;
  1825. case '7': /* DECSC -- Save Cursor */
  1826. tcursor(CURSOR_SAVE);
  1827. term.esc = 0;
  1828. break;
  1829. case '8': /* DECRC -- Restore Cursor */
  1830. tcursor(CURSOR_LOAD);
  1831. term.esc = 0;
  1832. break;
  1833. case '\\': /* ST -- Stop */
  1834. term.esc = 0;
  1835. break;
  1836. default:
  1837. fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
  1838. (uchar) ascii, isprint(ascii)? ascii:'.');
  1839. term.esc = 0;
  1840. }
  1841. }
  1842. /*
  1843. * All characters which forms part of a sequence are not
  1844. * printed
  1845. */
  1846. return;
  1847. }
  1848. /*
  1849. * Display control codes only if we are in graphic mode
  1850. */
  1851. if(control && !(term.c.attr.mode & ATTR_GFX))
  1852. return;
  1853. if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
  1854. sel.bx = -1;
  1855. if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
  1856. tnewline(1); /* always go to first col */
  1857. tsetchar(c, &term.c.attr, term.c.x, term.c.y);
  1858. if(term.c.x+1 < term.col)
  1859. tmoveto(term.c.x+1, term.c.y);
  1860. else
  1861. term.c.state |= CURSOR_WRAPNEXT;
  1862. }
  1863. int
  1864. tresize(int col, int row) {
  1865. int i, x;
  1866. int minrow = MIN(row, term.row);
  1867. int mincol = MIN(col, term.col);
  1868. int slide = term.c.y - row + 1;
  1869. bool *bp;
  1870. if(col < 1 || row < 1)
  1871. return 0;
  1872. /* free unneeded rows */
  1873. i = 0;
  1874. if(slide > 0) {
  1875. /* slide screen to keep cursor where we expect it -
  1876. * tscrollup would work here, but we can optimize to
  1877. * memmove because we're freeing the earlier lines */
  1878. for(/* i = 0 */; i < slide; i++) {
  1879. free(term.line[i]);
  1880. free(term.alt[i]);
  1881. }
  1882. memmove(term.line, term.line + slide, row * sizeof(Line));
  1883. memmove(term.alt, term.alt + slide, row * sizeof(Line));
  1884. }
  1885. for(i += row; i < term.row; i++) {
  1886. free(term.line[i]);
  1887. free(term.alt[i]);
  1888. }
  1889. /* resize to new height */
  1890. term.line = xrealloc(term.line, row * sizeof(Line));
  1891. term.alt = xrealloc(term.alt, row * sizeof(Line));
  1892. term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
  1893. term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
  1894. /* resize each row to new width, zero-pad if needed */
  1895. for(i = 0; i < minrow; i++) {
  1896. term.dirty[i] = 1;
  1897. term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
  1898. term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
  1899. for(x = mincol; x < col; x++) {
  1900. term.line[i][x].state = 0;
  1901. term.alt[i][x].state = 0;
  1902. }
  1903. }
  1904. /* allocate any new rows */
  1905. for(/* i == minrow */; i < row; i++) {
  1906. term.dirty[i] = 1;
  1907. term.line[i] = xcalloc(col, sizeof(Glyph));
  1908. term.alt [i] = xcalloc(col, sizeof(Glyph));
  1909. }
  1910. if(col > term.col) {
  1911. bp = term.tabs + term.col;
  1912. memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
  1913. while(--bp > term.tabs && !*bp)
  1914. /* nothing */ ;
  1915. for(bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
  1916. *bp = 1;
  1917. }
  1918. /* update terminal size */
  1919. term.col = col;
  1920. term.row = row;
  1921. /* reset scrolling region */
  1922. tsetscroll(0, row-1);
  1923. /* make use of the LIMIT in tmoveto */
  1924. tmoveto(term.c.x, term.c.y);
  1925. return (slide > 0);
  1926. }
  1927. void
  1928. xresize(int col, int row) {
  1929. xw.tw = MAX(1, 2*borderpx + col * xw.cw);
  1930. xw.th = MAX(1, 2*borderpx + row * xw.ch);
  1931. XftDrawChange(xw.draw, xw.buf);
  1932. }
  1933. void
  1934. xloadcols(void) {
  1935. int i, r, g, b;
  1936. XRenderColor color = { .alpha = 0 };
  1937. /* load colors [0-15] colors and [256-LEN(colorname)[ (config.h) */
  1938. for(i = 0; i < LEN(colorname); i++) {
  1939. if(!colorname[i])
  1940. continue;
  1941. if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, colorname[i], &dc.col[i])) {
  1942. die("Could not allocate color '%s'\n", colorname[i]);
  1943. }
  1944. }
  1945. /* load colors [16-255] ; same colors as xterm */
  1946. for(i = 16, r = 0; r < 6; r++) {
  1947. for(g = 0; g < 6; g++) {
  1948. for(b = 0; b < 6; b++) {
  1949. color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
  1950. color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
  1951. color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
  1952. if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &dc.col[i])) {
  1953. die("Could not allocate color %d\n", i);
  1954. }
  1955. i++;
  1956. }
  1957. }
  1958. }
  1959. for(r = 0; r < 24; r++, i++) {
  1960. color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
  1961. if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color,
  1962. &dc.col[i])) {
  1963. die("Could not allocate color %d\n", i);
  1964. }
  1965. }
  1966. }
  1967. void
  1968. xtermclear(int col1, int row1, int col2, int row2) {
  1969. XftDrawRect(xw.draw,
  1970. &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
  1971. borderpx + col1 * xw.cw,
  1972. borderpx + row1 * xw.ch,
  1973. (col2-col1+1) * xw.cw,
  1974. (row2-row1+1) * xw.ch);
  1975. }
  1976. /*
  1977. * Absolute coordinates.
  1978. */
  1979. void
  1980. xclear(int x1, int y1, int x2, int y2) {
  1981. XftDrawRect(xw.draw,
  1982. &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
  1983. x1, y1, x2-x1, y2-y1);
  1984. }
  1985. void
  1986. xhints(void) {
  1987. XClassHint class = {opt_class ? opt_class : termname, termname};
  1988. XWMHints wm = {.flags = InputHint, .input = 1};
  1989. XSizeHints *sizeh = NULL;
  1990. sizeh = XAllocSizeHints();
  1991. if(xw.isfixed == False) {
  1992. sizeh->flags = PSize | PResizeInc | PBaseSize;
  1993. sizeh->height = xw.h;
  1994. sizeh->width = xw.w;
  1995. sizeh->height_inc = xw.ch;
  1996. sizeh->width_inc = xw.cw;
  1997. sizeh->base_height = 2*borderpx;
  1998. sizeh->base_width = 2*borderpx;
  1999. } else {
  2000. sizeh->flags = PMaxSize | PMinSize;
  2001. sizeh->min_width = sizeh->max_width = xw.fw;
  2002. sizeh->min_height = sizeh->max_height = xw.fh;
  2003. }
  2004. XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm, &class);
  2005. XFree(sizeh);
  2006. }
  2007. int
  2008. xloadfont(Font *f, FcPattern *pattern) {
  2009. FcPattern *match;
  2010. FcResult result;
  2011. match = XftFontMatch(xw.dpy, xw.scr, pattern, &result);
  2012. if(!match)
  2013. return 1;
  2014. if(!(f->set = XftFontOpenPattern(xw.dpy, match))) {
  2015. FcPatternDestroy(match);
  2016. return 1;
  2017. }
  2018. f->ascent = f->set->ascent;
  2019. f->descent = f->set->descent;
  2020. f->lbearing = 0;
  2021. f->rbearing = f->set->max_advance_width;
  2022. f->height = f->set->height;
  2023. f->width = f->lbearing + f->rbearing;
  2024. return 0;
  2025. }
  2026. void
  2027. xloadfonts(char *fontstr, int fontsize) {
  2028. FcPattern *pattern;
  2029. FcResult result;
  2030. double fontval;
  2031. if(fontstr[0] == '-') {
  2032. pattern = XftXlfdParse(fontstr, False, False);
  2033. } else {
  2034. pattern = FcNameParse((FcChar8 *)fontstr);
  2035. }
  2036. if(!pattern)
  2037. die("st: can't open font %s\n", fontstr);
  2038. if(fontsize > 0) {
  2039. FcPatternDel(pattern, FC_PIXEL_SIZE);
  2040. FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
  2041. usedfontsize = fontsize;
  2042. } else {
  2043. result = FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval);
  2044. if(result == FcResultMatch) {
  2045. usedfontsize = (int)fontval;
  2046. } else {
  2047. /*
  2048. * Default font size is 12, if none given. This is to
  2049. * have a known usedfontsize value.
  2050. */
  2051. FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
  2052. usedfontsize = 12;
  2053. }
  2054. }
  2055. if(xloadfont(&dc.font, pattern))
  2056. die("st: can't open font %s\n", fontstr);
  2057. /* Setting character width and height. */
  2058. xw.cw = dc.font.width;
  2059. xw.ch = dc.font.height;
  2060. FcPatternDel(pattern, FC_WEIGHT);
  2061. FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
  2062. if(xloadfont(&dc.bfont, pattern))
  2063. die("st: can't open font %s\n", fontstr);
  2064. FcPatternDel(pattern, FC_SLANT);
  2065. FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
  2066. if(xloadfont(&dc.ibfont, pattern))
  2067. die("st: can't open font %s\n", fontstr);
  2068. FcPatternDel(pattern, FC_WEIGHT);
  2069. if(xloadfont(&dc.ifont, pattern))
  2070. die("st: can't open font %s\n", fontstr);
  2071. FcPatternDestroy(pattern);
  2072. }
  2073. void
  2074. xzoom(const Arg *arg)
  2075. {
  2076. xloadfonts(usedfont, usedfontsize + arg->i);
  2077. cresize(0, 0);
  2078. draw();
  2079. }
  2080. void
  2081. xinit(void) {
  2082. XSetWindowAttributes attrs;
  2083. Cursor cursor;
  2084. Window parent;
  2085. int sw, sh, major, minor;
  2086. if(!(xw.dpy = XOpenDisplay(NULL)))
  2087. die("Can't open display\n");
  2088. xw.scr = XDefaultScreen(xw.dpy);
  2089. xw.vis = XDefaultVisual(xw.dpy, xw.scr);
  2090. /* font */
  2091. usedfont = (opt_font == NULL)? font : opt_font;
  2092. xloadfonts(usedfont, 0);
  2093. /* colors */
  2094. xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
  2095. xloadcols();
  2096. /* adjust fixed window geometry */
  2097. if(xw.isfixed) {
  2098. sw = DisplayWidth(xw.dpy, xw.scr);
  2099. sh = DisplayHeight(xw.dpy, xw.scr);
  2100. if(xw.fx < 0)
  2101. xw.fx = sw + xw.fx - xw.fw - 1;
  2102. if(xw.fy < 0)
  2103. xw.fy = sh + xw.fy - xw.fh - 1;
  2104. xw.h = xw.fh;
  2105. xw.w = xw.fw;
  2106. } else {
  2107. /* window - default size */
  2108. xw.h = 2*borderpx + term.row * xw.ch;
  2109. xw.w = 2*borderpx + term.col * xw.cw;
  2110. xw.fx = 0;
  2111. xw.fy = 0;
  2112. }
  2113. attrs.background_pixel = dc.col[defaultbg].pixel;
  2114. attrs.border_pixel = dc.col[defaultbg].pixel;
  2115. attrs.bit_gravity = NorthWestGravity;
  2116. attrs.event_mask = FocusChangeMask | KeyPressMask
  2117. | ExposureMask | VisibilityChangeMask | StructureNotifyMask
  2118. | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
  2119. attrs.colormap = xw.cmap;
  2120. parent = opt_embed ? strtol(opt_embed, NULL, 0) : XRootWindow(xw.dpy, xw.scr);
  2121. xw.win = XCreateWindow(xw.dpy, parent, xw.fx, xw.fy,
  2122. xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
  2123. xw.vis,
  2124. CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
  2125. | CWColormap,
  2126. &attrs);
  2127. /* double buffering */
  2128. if(!XdbeQueryExtension(xw.dpy, &major, &minor))
  2129. die("Xdbe extension is not present\n");
  2130. xw.buf = XdbeAllocateBackBufferName(xw.dpy, xw.win, XdbeCopied);
  2131. /* Xft rendering context */
  2132. xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
  2133. /* input methods */
  2134. xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
  2135. xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
  2136. | XIMStatusNothing, XNClientWindow, xw.win,
  2137. XNFocusWindow, xw.win, NULL);
  2138. /* white cursor, black outline */
  2139. cursor = XCreateFontCursor(xw.dpy, XC_xterm);
  2140. XDefineCursor(xw.dpy, xw.win, cursor);
  2141. XRecolorCursor(xw.dpy, cursor,
  2142. &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
  2143. &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
  2144. xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
  2145. xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
  2146. XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
  2147. xresettitle();
  2148. XMapWindow(xw.dpy, xw.win);
  2149. xhints();
  2150. XSync(xw.dpy, 0);
  2151. }
  2152. void
  2153. xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
  2154. int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
  2155. width = charlen * xw.cw;
  2156. Font *font = &dc.font;
  2157. XGlyphInfo extents;
  2158. Colour *fg = &dc.col[base.fg], *bg = &dc.col[base.bg],
  2159. *temp, revfg, revbg;
  2160. XRenderColor colfg, colbg;
  2161. if(base.mode & ATTR_BOLD) {
  2162. if(BETWEEN(base.fg, 0, 7)) {
  2163. /* basic system colors */
  2164. fg = &dc.col[base.fg + 8];
  2165. } else if(BETWEEN(base.fg, 16, 195)) {
  2166. /* 256 colors */
  2167. fg = &dc.col[base.fg + 36];
  2168. } else if(BETWEEN(base.fg, 232, 251)) {
  2169. /* greyscale */
  2170. fg = &dc.col[base.fg + 4];
  2171. }
  2172. /*
  2173. * Those ranges will not be brightened:
  2174. * 8 - 15 – bright system colors
  2175. * 196 - 231 – highest 256 color cube
  2176. * 252 - 255 – brightest colors in greyscale
  2177. */
  2178. font = &dc.bfont;
  2179. }
  2180. if(base.mode & ATTR_ITALIC)
  2181. font = &dc.ifont;
  2182. if((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD))
  2183. font = &dc.ibfont;
  2184. if(IS_SET(MODE_REVERSE)) {
  2185. if(fg == &dc.col[defaultfg]) {
  2186. fg = &dc.col[defaultbg];
  2187. } else {
  2188. colfg.red = ~fg->color.red;
  2189. colfg.green = ~fg->color.green;
  2190. colfg.blue = ~fg->color.blue;
  2191. colfg.alpha = fg->color.alpha;
  2192. XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
  2193. fg = &revfg;
  2194. }
  2195. if(bg == &dc.col[defaultbg]) {
  2196. bg = &dc.col[defaultfg];
  2197. } else {
  2198. colbg.red = ~bg->color.red;
  2199. colbg.green = ~bg->color.green;
  2200. colbg.blue = ~bg->color.blue;
  2201. colbg.alpha = bg->color.alpha;
  2202. XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &revbg);
  2203. bg = &revbg;
  2204. }
  2205. }
  2206. if(base.mode & ATTR_REVERSE)
  2207. temp = fg, fg = bg, bg = temp;
  2208. XftTextExtentsUtf8(xw.dpy, font->set, (FcChar8 *)s, bytelen,
  2209. &extents);
  2210. width = extents.xOff;
  2211. /* Intelligent cleaning up of the borders. */
  2212. if(x == 0) {
  2213. xclear(0, (y == 0)? 0 : winy, borderpx,
  2214. winy + xw.ch + (y == term.row-1)? xw.h : 0);
  2215. }
  2216. if(x + charlen >= term.col-1) {
  2217. xclear(winx + width, (y == 0)? 0 : winy, xw.w,
  2218. (y == term.row-1)? xw.h : (winy + xw.ch));
  2219. }
  2220. if(y == 0)
  2221. xclear(winx, 0, winx + width, borderpx);
  2222. if(y == term.row-1)
  2223. xclear(winx, winy + xw.ch, winx + width, xw.h);
  2224. XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
  2225. XftDrawStringUtf8(xw.draw, fg, font->set, winx,
  2226. winy + font->ascent, (FcChar8 *)s, bytelen);
  2227. if(base.mode & ATTR_UNDERLINE) {
  2228. XftDrawRect(xw.draw, fg, winx, winy + font->ascent + 1,
  2229. width, 1);
  2230. }
  2231. }
  2232. void
  2233. xdrawcursor(void) {
  2234. static int oldx = 0, oldy = 0;
  2235. int sl;
  2236. Glyph g = {{' '}, ATTR_NULL, defaultbg, defaultcs, 0};
  2237. LIMIT(oldx, 0, term.col-1);
  2238. LIMIT(oldy, 0, term.row-1);
  2239. if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
  2240. memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
  2241. /* remove the old cursor */
  2242. if(term.line[oldy][oldx].state & GLYPH_SET) {
  2243. sl = utf8size(term.line[oldy][oldx].c);
  2244. xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx,
  2245. oldy, 1, sl);
  2246. } else {
  2247. xtermclear(oldx, oldy, oldx, oldy);
  2248. }
  2249. /* draw the new one */
  2250. if(!(IS_SET(MODE_HIDE))) {
  2251. if(!(xw.state & WIN_FOCUSED))
  2252. g.bg = defaultucs;
  2253. if(IS_SET(MODE_REVERSE))
  2254. g.mode |= ATTR_REVERSE, g.fg = defaultcs, g.bg = defaultfg;
  2255. sl = utf8size(g.c);
  2256. xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
  2257. oldx = term.c.x, oldy = term.c.y;
  2258. }
  2259. }
  2260. void
  2261. xresettitle(void) {
  2262. XStoreName(xw.dpy, xw.win, opt_title ? opt_title : "st");
  2263. }
  2264. void
  2265. redraw(void) {
  2266. struct timespec tv = {0, REDRAW_TIMEOUT * 1000};
  2267. tfulldirt();
  2268. draw();
  2269. XSync(xw.dpy, False); /* necessary for a good tput flash */
  2270. nanosleep(&tv, NULL);
  2271. }
  2272. void
  2273. draw(void) {
  2274. XdbeSwapInfo swpinfo[1] = {{xw.win, XdbeCopied}};
  2275. drawregion(0, 0, term.col, term.row);
  2276. XdbeSwapBuffers(xw.dpy, swpinfo, 1);
  2277. }
  2278. void
  2279. drawregion(int x1, int y1, int x2, int y2) {
  2280. int ic, ib, x, y, ox, sl;
  2281. Glyph base, new;
  2282. char buf[DRAW_BUF_SIZ];
  2283. bool ena_sel = sel.bx != -1, alt = IS_SET(MODE_ALTSCREEN) != 0;
  2284. if((sel.alt != 0) ^ alt)
  2285. ena_sel = 0;
  2286. if(!(xw.state & WIN_VISIBLE))
  2287. return;
  2288. for(y = y1; y < y2; y++) {
  2289. if(!term.dirty[y])
  2290. continue;
  2291. xtermclear(0, y, term.col, y);
  2292. term.dirty[y] = 0;
  2293. base = term.line[y][0];
  2294. ic = ib = ox = 0;
  2295. for(x = x1; x < x2; x++) {
  2296. new = term.line[y][x];
  2297. if(ena_sel && *(new.c) && selected(x, y))
  2298. new.mode ^= ATTR_REVERSE;
  2299. if(ib > 0 && (!(new.state & GLYPH_SET)
  2300. || ATTRCMP(base, new)
  2301. || ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
  2302. xdraws(buf, base, ox, y, ic, ib);
  2303. ic = ib = 0;
  2304. }
  2305. if(new.state & GLYPH_SET) {
  2306. if(ib == 0) {
  2307. ox = x;
  2308. base = new;
  2309. }
  2310. sl = utf8size(new.c);
  2311. memcpy(buf+ib, new.c, sl);
  2312. ib += sl;
  2313. ++ic;
  2314. }
  2315. }
  2316. if(ib > 0)
  2317. xdraws(buf, base, ox, y, ic, ib);
  2318. }
  2319. xdrawcursor();
  2320. }
  2321. void
  2322. expose(XEvent *ev) {
  2323. XExposeEvent *e = &ev->xexpose;
  2324. if(xw.state & WIN_REDRAW) {
  2325. if(!e->count)
  2326. xw.state &= ~WIN_REDRAW;
  2327. }
  2328. }
  2329. void
  2330. visibility(XEvent *ev) {
  2331. XVisibilityEvent *e = &ev->xvisibility;
  2332. if(e->state == VisibilityFullyObscured) {
  2333. xw.state &= ~WIN_VISIBLE;
  2334. } else if(!(xw.state & WIN_VISIBLE)) {
  2335. /* need a full redraw for next Expose, not just a buf copy */
  2336. xw.state |= WIN_VISIBLE | WIN_REDRAW;
  2337. }
  2338. }
  2339. void
  2340. unmap(XEvent *ev) {
  2341. xw.state &= ~WIN_VISIBLE;
  2342. }
  2343. void
  2344. xseturgency(int add) {
  2345. XWMHints *h = XGetWMHints(xw.dpy, xw.win);
  2346. h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
  2347. XSetWMHints(xw.dpy, xw.win, h);
  2348. XFree(h);
  2349. }
  2350. void
  2351. focus(XEvent *ev) {
  2352. if(ev->type == FocusIn) {
  2353. XSetICFocus(xw.xic);
  2354. xw.state |= WIN_FOCUSED;
  2355. xseturgency(0);
  2356. } else {
  2357. XUnsetICFocus(xw.xic);
  2358. xw.state &= ~WIN_FOCUSED;
  2359. }
  2360. }
  2361. char*
  2362. kmap(KeySym k, uint state) {
  2363. int i;
  2364. uint mask;
  2365. state &= ~Mod2Mask;
  2366. for(i = 0; i < LEN(key); i++) {
  2367. mask = key[i].mask;
  2368. if(key[i].k == k && ((state & mask) == mask
  2369. || (mask == XK_NO_MOD && !state))) {
  2370. return (char*)key[i].s;
  2371. }
  2372. }
  2373. return NULL;
  2374. }
  2375. void
  2376. kpress(XEvent *ev) {
  2377. XKeyEvent *e = &ev->xkey;
  2378. KeySym ksym;
  2379. char buf[32], *customkey;
  2380. int len, meta, shift, i;
  2381. Status status;
  2382. if (IS_SET(MODE_KBDLOCK))
  2383. return;
  2384. meta = e->state & Mod1Mask;
  2385. shift = e->state & ShiftMask;
  2386. len = XmbLookupString(xw.xic, e, buf, sizeof(buf), &ksym, &status);
  2387. /* 1. shortcuts */
  2388. for(i = 0; i < LEN(shortcuts); i++) {
  2389. if((ksym == shortcuts[i].keysym)
  2390. && (CLEANMASK(shortcuts[i].mod) == \
  2391. CLEANMASK(e->state))
  2392. && shortcuts[i].func) {
  2393. shortcuts[i].func(&(shortcuts[i].arg));
  2394. }
  2395. }
  2396. /* 2. custom keys from config.h */
  2397. if((customkey = kmap(ksym, e->state))) {
  2398. ttywrite(customkey, strlen(customkey));
  2399. /* 2. hardcoded (overrides X lookup) */
  2400. } else {
  2401. switch(ksym) {
  2402. case XK_Up:
  2403. case XK_Down:
  2404. case XK_Left:
  2405. case XK_Right:
  2406. /* XXX: shift up/down doesn't work */
  2407. sprintf(buf, "\033%c%c",
  2408. IS_SET(MODE_APPKEYPAD) ? 'O' : '[',
  2409. (shift ? "dacb":"DACB")[ksym - XK_Left]);
  2410. ttywrite(buf, 3);
  2411. break;
  2412. case XK_Insert:
  2413. if(shift)
  2414. selpaste();
  2415. break;
  2416. case XK_Return:
  2417. if(meta)
  2418. ttywrite("\033", 1);
  2419. if(IS_SET(MODE_CRLF)) {
  2420. ttywrite("\r\n", 2);
  2421. } else {
  2422. ttywrite("\r", 1);
  2423. }
  2424. break;
  2425. /* 3. X lookup */
  2426. default:
  2427. if(len > 0) {
  2428. if(meta && len == 1)
  2429. ttywrite("\033", 1);
  2430. ttywrite(buf, len);
  2431. }
  2432. break;
  2433. }
  2434. }
  2435. }
  2436. void
  2437. cmessage(XEvent *e) {
  2438. /* See xembed specs
  2439. http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html */
  2440. if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
  2441. if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
  2442. xw.state |= WIN_FOCUSED;
  2443. xseturgency(0);
  2444. } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
  2445. xw.state &= ~WIN_FOCUSED;
  2446. }
  2447. } else if(e->xclient.data.l[0] == xw.wmdeletewin) {
  2448. /* Send SIGHUP to shell */
  2449. kill(pid, SIGHUP);
  2450. exit(EXIT_SUCCESS);
  2451. }
  2452. }
  2453. void
  2454. cresize(int width, int height)
  2455. {
  2456. int col, row;
  2457. if(width != 0)
  2458. xw.w = width;
  2459. if(height != 0)
  2460. xw.h = height;
  2461. col = (xw.w - 2*borderpx) / xw.cw;
  2462. row = (xw.h - 2*borderpx) / xw.ch;
  2463. tresize(col, row);
  2464. xresize(col, row);
  2465. ttyresize();
  2466. }
  2467. void
  2468. resize(XEvent *e) {
  2469. if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
  2470. return;
  2471. cresize(e->xconfigure.width, e->xconfigure.height);
  2472. }
  2473. void
  2474. run(void) {
  2475. XEvent ev;
  2476. fd_set rfd;
  2477. int xfd = XConnectionNumber(xw.dpy), i;
  2478. struct timeval drawtimeout, *tv = NULL;
  2479. for(i = 0;; i++) {
  2480. FD_ZERO(&rfd);
  2481. FD_SET(cmdfd, &rfd);
  2482. FD_SET(xfd, &rfd);
  2483. if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv) < 0) {
  2484. if(errno == EINTR)
  2485. continue;
  2486. die("select failed: %s\n", SERRNO);
  2487. }
  2488. /*
  2489. * Stop after a certain number of reads so the user does not
  2490. * feel like the system is stuttering.
  2491. */
  2492. if(i < 1000 && FD_ISSET(cmdfd, &rfd)) {
  2493. ttyread();
  2494. /*
  2495. * Just wait a bit so it isn't disturbing the
  2496. * user and the system is able to write something.
  2497. */
  2498. drawtimeout.tv_sec = 0;
  2499. drawtimeout.tv_usec = 5;
  2500. tv = &drawtimeout;
  2501. continue;
  2502. }
  2503. i = 0;
  2504. tv = NULL;
  2505. while(XPending(xw.dpy)) {
  2506. XNextEvent(xw.dpy, &ev);
  2507. if(XFilterEvent(&ev, None))
  2508. continue;
  2509. if(handler[ev.type])
  2510. (handler[ev.type])(&ev);
  2511. }
  2512. draw();
  2513. XFlush(xw.dpy);
  2514. }
  2515. }
  2516. int
  2517. main(int argc, char *argv[]) {
  2518. int i, bitm, xr, yr;
  2519. uint wr, hr;
  2520. xw.fw = xw.fh = xw.fx = xw.fy = 0;
  2521. xw.isfixed = False;
  2522. for(i = 1; i < argc; i++) {
  2523. switch(argv[i][0] != '-' || argv[i][2] ? -1 : argv[i][1]) {
  2524. case 'c':
  2525. if(++i < argc)
  2526. opt_class = argv[i];
  2527. break;
  2528. case 'e':
  2529. /* eat every remaining arguments */
  2530. if(++i < argc)
  2531. opt_cmd = &argv[i];
  2532. goto run;
  2533. case 'f':
  2534. if(++i < argc)
  2535. opt_font = argv[i];
  2536. break;
  2537. case 'g':
  2538. if(++i >= argc)
  2539. break;
  2540. bitm = XParseGeometry(argv[i], &xr, &yr, &wr, &hr);
  2541. if(bitm & XValue)
  2542. xw.fx = xr;
  2543. if(bitm & YValue)
  2544. xw.fy = yr;
  2545. if(bitm & WidthValue)
  2546. xw.fw = (int)wr;
  2547. if(bitm & HeightValue)
  2548. xw.fh = (int)hr;
  2549. if(bitm & XNegative && xw.fx == 0)
  2550. xw.fx = -1;
  2551. if(bitm & XNegative && xw.fy == 0)
  2552. xw.fy = -1;
  2553. if(xw.fh != 0 && xw.fw != 0)
  2554. xw.isfixed = True;
  2555. break;
  2556. case 'o':
  2557. if(++i < argc)
  2558. opt_io = argv[i];
  2559. break;
  2560. case 't':
  2561. if(++i < argc)
  2562. opt_title = argv[i];
  2563. break;
  2564. case 'v':
  2565. default:
  2566. die(USAGE);
  2567. case 'w':
  2568. if(++i < argc)
  2569. opt_embed = argv[i];
  2570. break;
  2571. }
  2572. }
  2573. run:
  2574. setlocale(LC_CTYPE, "");
  2575. XSetLocaleModifiers("");
  2576. tnew(80, 24);
  2577. xinit();
  2578. ttynew();
  2579. selinit();
  2580. run();
  2581. return 0;
  2582. }