st.c 81 KB

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