Simple Terminal from SuckLess
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  1. /* See LICENSE for licence details. */
  2. #include <ctype.h>
  3. #include <errno.h>
  4. #include <fcntl.h>
  5. #include <limits.h>
  6. #include <locale.h>
  7. #include <pwd.h>
  8. #include <stdarg.h>
  9. #include <stdbool.h>
  10. #include <stdio.h>
  11. #include <stdlib.h>
  12. #include <string.h>
  13. #include <signal.h>
  14. #include <stdint.h>
  15. #include <sys/ioctl.h>
  16. #include <sys/select.h>
  17. #include <sys/stat.h>
  18. #include <sys/time.h>
  19. #include <sys/types.h>
  20. #include <sys/wait.h>
  21. #include <time.h>
  22. #include <unistd.h>
  23. #include <libgen.h>
  24. #include <X11/Xatom.h>
  25. #include <X11/Xlib.h>
  26. #include <X11/Xutil.h>
  27. #include <X11/cursorfont.h>
  28. #include <X11/keysym.h>
  29. #include <X11/Xft/Xft.h>
  30. #include <fontconfig/fontconfig.h>
  31. #include <wchar.h>
  32. #include "arg.h"
  33. char *argv0;
  34. #define Glyph Glyph_
  35. #define Font Font_
  36. #if defined(__linux)
  37. #include <pty.h>
  38. #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
  39. #include <util.h>
  40. #elif defined(__FreeBSD__) || defined(__DragonFly__)
  41. #include <libutil.h>
  42. #endif
  43. /* XEMBED messages */
  44. #define XEMBED_FOCUS_IN 4
  45. #define XEMBED_FOCUS_OUT 5
  46. /* Arbitrary sizes */
  47. #define UTF_INVALID 0xFFFD
  48. #define UTF_SIZ 4
  49. #define ESC_BUF_SIZ (128*UTF_SIZ)
  50. #define ESC_ARG_SIZ 16
  51. #define STR_BUF_SIZ ESC_BUF_SIZ
  52. #define STR_ARG_SIZ ESC_ARG_SIZ
  53. #define DRAW_BUF_SIZ 20*1024
  54. #define XK_ANY_MOD UINT_MAX
  55. #define XK_NO_MOD 0
  56. #define XK_SWITCH_MOD (1<<13)
  57. #define REDRAW_TIMEOUT (80*1000) /* 80 ms */
  58. /* macros */
  59. #define MIN(a, b) ((a) < (b) ? (a) : (b))
  60. #define MAX(a, b) ((a) < (b) ? (b) : (a))
  61. #define LEN(a) (sizeof(a) / sizeof(a)[0])
  62. #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
  63. #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
  64. #define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f))
  65. #define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
  66. #define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
  67. #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
  68. #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
  69. #define IS_SET(flag) ((term.mode & (flag)) != 0)
  70. #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000)
  71. #define CEIL(x) (((x) != (int) (x)) ? (x) + 1 : (x))
  72. #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
  73. #define TRUECOLOR(r,g,b) (1 << 24 | (r) << 16 | (g) << 8 | (b))
  74. #define IS_TRUECOL(x) (1 << 24 & (x))
  75. #define TRUERED(x) (((x) & 0xff0000) >> 8)
  76. #define TRUEGREEN(x) (((x) & 0xff00))
  77. #define TRUEBLUE(x) (((x) & 0xff) << 8)
  78. #define VT102ID "\033[?6c"
  79. enum glyph_attribute {
  80. ATTR_NULL = 0,
  81. ATTR_REVERSE = 1,
  82. ATTR_UNDERLINE = 2,
  83. ATTR_BOLD = 4,
  84. ATTR_GFX = 8,
  85. ATTR_ITALIC = 16,
  86. ATTR_BLINK = 32,
  87. ATTR_WRAP = 64,
  88. ATTR_WIDE = 128,
  89. ATTR_WDUMMY = 256,
  90. };
  91. enum cursor_movement {
  92. CURSOR_SAVE,
  93. CURSOR_LOAD
  94. };
  95. enum cursor_state {
  96. CURSOR_DEFAULT = 0,
  97. CURSOR_WRAPNEXT = 1,
  98. CURSOR_ORIGIN = 2
  99. };
  100. enum term_mode {
  101. MODE_WRAP = 1,
  102. MODE_INSERT = 2,
  103. MODE_APPKEYPAD = 4,
  104. MODE_ALTSCREEN = 8,
  105. MODE_CRLF = 16,
  106. MODE_MOUSEBTN = 32,
  107. MODE_MOUSEMOTION = 64,
  108. MODE_REVERSE = 128,
  109. MODE_KBDLOCK = 256,
  110. MODE_HIDE = 512,
  111. MODE_ECHO = 1024,
  112. MODE_APPCURSOR = 2048,
  113. MODE_MOUSESGR = 4096,
  114. MODE_8BIT = 8192,
  115. MODE_BLINK = 16384,
  116. MODE_FBLINK = 32768,
  117. MODE_FOCUS = 65536,
  118. MODE_MOUSEX10 = 131072,
  119. MODE_MOUSEMANY = 262144,
  120. MODE_BRCKTPASTE = 524288,
  121. MODE_PRINT = 1048576,
  122. MODE_MOUSE = MODE_MOUSEBTN|MODE_MOUSEMOTION|MODE_MOUSEX10\
  123. |MODE_MOUSEMANY,
  124. };
  125. enum charset {
  126. CS_GRAPHIC0,
  127. CS_GRAPHIC1,
  128. CS_UK,
  129. CS_USA,
  130. CS_MULTI,
  131. CS_GER,
  132. CS_FIN
  133. };
  134. enum escape_state {
  135. ESC_START = 1,
  136. ESC_CSI = 2,
  137. ESC_STR = 4, /* DCS, OSC, PM, APC */
  138. ESC_ALTCHARSET = 8,
  139. ESC_STR_END = 16, /* a final string was encountered */
  140. ESC_TEST = 32, /* Enter in test mode */
  141. };
  142. enum window_state {
  143. WIN_VISIBLE = 1,
  144. WIN_REDRAW = 2,
  145. WIN_FOCUSED = 4
  146. };
  147. enum selection_type {
  148. SEL_REGULAR = 1,
  149. SEL_RECTANGULAR = 2
  150. };
  151. enum selection_snap {
  152. SNAP_WORD = 1,
  153. SNAP_LINE = 2
  154. };
  155. typedef unsigned char uchar;
  156. typedef unsigned int uint;
  157. typedef unsigned long ulong;
  158. typedef unsigned short ushort;
  159. typedef XftDraw *Draw;
  160. typedef XftColor Colour;
  161. typedef Colormap Colourmap;
  162. typedef struct {
  163. char c[UTF_SIZ]; /* character code */
  164. ushort mode; /* attribute flags */
  165. uint32_t fg; /* foreground */
  166. uint32_t bg; /* background */
  167. } Glyph;
  168. typedef Glyph *Line;
  169. typedef struct {
  170. Glyph attr; /* current char attributes */
  171. int x;
  172. int y;
  173. char state;
  174. } TCursor;
  175. /* CSI Escape sequence structs */
  176. /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
  177. typedef struct {
  178. char buf[ESC_BUF_SIZ]; /* raw string */
  179. int len; /* raw string length */
  180. char priv;
  181. int arg[ESC_ARG_SIZ];
  182. int narg; /* nb of args */
  183. char mode;
  184. } CSIEscape;
  185. /* STR Escape sequence structs */
  186. /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
  187. typedef struct {
  188. char type; /* ESC type ... */
  189. char buf[STR_BUF_SIZ]; /* raw string */
  190. int len; /* raw string length */
  191. char *args[STR_ARG_SIZ];
  192. int narg; /* nb of args */
  193. } STREscape;
  194. /* Internal representation of the screen */
  195. typedef struct {
  196. int row; /* nb row */
  197. int col; /* nb col */
  198. Line *line; /* screen */
  199. Line *alt; /* alternate screen */
  200. bool *dirty; /* dirtyness of lines */
  201. TCursor c; /* cursor */
  202. int top; /* top scroll limit */
  203. int bot; /* bottom scroll limit */
  204. int mode; /* terminal mode flags */
  205. int esc; /* escape state flags */
  206. char trantbl[4]; /* charset table translation */
  207. int charset; /* current charset */
  208. int icharset; /* selected charset for sequence */
  209. bool numlock; /* lock numbers in keyboard */
  210. bool *tabs;
  211. } Term;
  212. /* Purely graphic info */
  213. typedef struct {
  214. Display *dpy;
  215. Colourmap cmap;
  216. Window win;
  217. Drawable buf;
  218. Atom xembed, wmdeletewin, netwmname, netwmpid;
  219. XIM xim;
  220. XIC xic;
  221. Draw draw;
  222. Visual *vis;
  223. XSetWindowAttributes attrs;
  224. int scr;
  225. bool isfixed; /* is fixed geometry? */
  226. int l, t; /* left and top offset */
  227. int gm; /* geometry mask */
  228. int tw, th; /* tty width and height */
  229. int w, h; /* window width and height */
  230. int ch; /* char height */
  231. int cw; /* char width */
  232. char state; /* focus, redraw, visible */
  233. } XWindow;
  234. typedef struct {
  235. uint b;
  236. uint mask;
  237. char *s;
  238. } Mousekey;
  239. typedef struct {
  240. KeySym k;
  241. uint mask;
  242. char *s;
  243. /* three valued logic variables: 0 indifferent, 1 on, -1 off */
  244. signed char appkey; /* application keypad */
  245. signed char appcursor; /* application cursor */
  246. signed char crlf; /* crlf mode */
  247. } Key;
  248. typedef struct {
  249. int mode;
  250. int type;
  251. int snap;
  252. /*
  253. * Selection variables:
  254. * nb normalized coordinates of the beginning of the selection
  255. * ne normalized coordinates of the end of the selection
  256. * ob original coordinates of the beginning of the selection
  257. * oe original coordinates of the end of the selection
  258. */
  259. struct {
  260. int x, y;
  261. } nb, ne, ob, oe;
  262. char *clip;
  263. Atom xtarget;
  264. bool alt;
  265. struct timeval tclick1;
  266. struct timeval tclick2;
  267. } Selection;
  268. typedef union {
  269. int i;
  270. uint ui;
  271. float f;
  272. const void *v;
  273. } Arg;
  274. typedef struct {
  275. uint mod;
  276. KeySym keysym;
  277. void (*func)(const Arg *);
  278. const Arg arg;
  279. } Shortcut;
  280. /* function definitions used in config.h */
  281. static void clippaste(const Arg *);
  282. static void numlock(const Arg *);
  283. static void selpaste(const Arg *);
  284. static void xzoom(const Arg *);
  285. static void printsel(const Arg *);
  286. static void printscreen(const Arg *) ;
  287. static void toggleprinter(const Arg *);
  288. /* Config.h for applying patches and the configuration. */
  289. #include "config.h"
  290. /* Font structure */
  291. typedef struct {
  292. int height;
  293. int width;
  294. int ascent;
  295. int descent;
  296. short lbearing;
  297. short rbearing;
  298. XftFont *match;
  299. FcFontSet *set;
  300. FcPattern *pattern;
  301. } Font;
  302. /* Drawing Context */
  303. typedef struct {
  304. Colour col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
  305. Font font, bfont, ifont, ibfont;
  306. GC gc;
  307. } DC;
  308. static void die(const char *, ...);
  309. static void draw(void);
  310. static void redraw(int);
  311. static void drawregion(int, int, int, int);
  312. static void execsh(void);
  313. static void sigchld(int);
  314. static void run(void);
  315. static void csidump(void);
  316. static void csihandle(void);
  317. static void csiparse(void);
  318. static void csireset(void);
  319. static void strdump(void);
  320. static void strhandle(void);
  321. static void strparse(void);
  322. static void strreset(void);
  323. static int tattrset(int);
  324. static void tprinter(char *, size_t);
  325. static void tdumpsel(void);
  326. static void tdumpline(int);
  327. static void tdump(void);
  328. static void tclearregion(int, int, int, int);
  329. static void tcursor(int);
  330. static void tdeletechar(int);
  331. static void tdeleteline(int);
  332. static void tinsertblank(int);
  333. static void tinsertblankline(int);
  334. static void tmoveto(int, int);
  335. static void tmoveato(int, int);
  336. static void tnew(int, int);
  337. static void tnewline(int);
  338. static void tputtab(int);
  339. static void tputc(char *, int);
  340. static void treset(void);
  341. static int tresize(int, int);
  342. static void tscrollup(int, int);
  343. static void tscrolldown(int, int);
  344. static void tsetattr(int *, int);
  345. static void tsetchar(char *, Glyph *, int, int);
  346. static void tsetscroll(int, int);
  347. static void tswapscreen(void);
  348. static void tsetdirt(int, int);
  349. static void tsetdirtattr(int);
  350. static void tsetmode(bool, bool, int *, int);
  351. static void tfulldirt(void);
  352. static void techo(char *, int);
  353. static bool tcontrolcode(uchar );
  354. static void tdectest(char );
  355. static int32_t tdefcolor(int *, int *, int);
  356. static void tselcs(void);
  357. static void tdeftran(char);
  358. static inline bool match(uint, uint);
  359. static void ttynew(void);
  360. static void ttyread(void);
  361. static void ttyresize(void);
  362. static void ttysend(char *, size_t);
  363. static void ttywrite(const char *, size_t);
  364. static void xdraws(char *, Glyph, int, int, int, int);
  365. static void xhints(void);
  366. static void xclear(int, int, int, int);
  367. static void xdrawcursor(void);
  368. static void xinit(void);
  369. static void xloadcols(void);
  370. static int xsetcolorname(int, const char *);
  371. static int xgeommasktogravity(int);
  372. static int xloadfont(Font *, FcPattern *);
  373. static void xloadfonts(char *, double);
  374. static int xloadfontset(Font *);
  375. static void xsettitle(char *);
  376. static void xresettitle(void);
  377. static void xsetpointermotion(int);
  378. static void xseturgency(int);
  379. static void xsetsel(char *);
  380. static void xtermclear(int, int, int, int);
  381. static void xunloadfont(Font *);
  382. static void xunloadfonts(void);
  383. static void xresize(int, int);
  384. static void expose(XEvent *);
  385. static void visibility(XEvent *);
  386. static void unmap(XEvent *);
  387. static char *kmap(KeySym, uint);
  388. static void kpress(XEvent *);
  389. static void cmessage(XEvent *);
  390. static void cresize(int, int);
  391. static void resize(XEvent *);
  392. static void focus(XEvent *);
  393. static void brelease(XEvent *);
  394. static void bpress(XEvent *);
  395. static void bmotion(XEvent *);
  396. static void selnotify(XEvent *);
  397. static void selclear(XEvent *);
  398. static void selrequest(XEvent *);
  399. static void selinit(void);
  400. static void selsort(void);
  401. static inline bool selected(int, int);
  402. static char *getsel(void);
  403. static void selcopy(void);
  404. static void selscroll(int, int);
  405. static void selsnap(int, int *, int *, int);
  406. static void getbuttoninfo(XEvent *);
  407. static void mousereport(XEvent *);
  408. static size_t utf8decode(char *, long *, size_t);
  409. static long utf8decodebyte(char, size_t *);
  410. static size_t utf8encode(long, char *, size_t);
  411. static char utf8encodebyte(long, size_t);
  412. static size_t utf8len(char *);
  413. static size_t utf8validate(long *, size_t);
  414. static ssize_t xwrite(int, const char *, size_t);
  415. static void *xmalloc(size_t);
  416. static void *xrealloc(void *, size_t);
  417. static char *xstrdup(char *);
  418. static void usage(void);
  419. static void (*handler[LASTEvent])(XEvent *) = {
  420. [KeyPress] = kpress,
  421. [ClientMessage] = cmessage,
  422. [ConfigureNotify] = resize,
  423. [VisibilityNotify] = visibility,
  424. [UnmapNotify] = unmap,
  425. [Expose] = expose,
  426. [FocusIn] = focus,
  427. [FocusOut] = focus,
  428. [MotionNotify] = bmotion,
  429. [ButtonPress] = bpress,
  430. [ButtonRelease] = brelease,
  431. [SelectionClear] = selclear,
  432. [SelectionNotify] = selnotify,
  433. [SelectionRequest] = selrequest,
  434. };
  435. /* Globals */
  436. static DC dc;
  437. static XWindow xw;
  438. static Term term;
  439. static CSIEscape csiescseq;
  440. static STREscape strescseq;
  441. static int cmdfd;
  442. static pid_t pid;
  443. static Selection sel;
  444. static int iofd = STDOUT_FILENO;
  445. static char **opt_cmd = NULL;
  446. static char *opt_io = NULL;
  447. static char *opt_title = NULL;
  448. static char *opt_embed = NULL;
  449. static char *opt_class = NULL;
  450. static char *opt_font = NULL;
  451. static int oldbutton = 3; /* button event on startup: 3 = release */
  452. static char *usedfont = NULL;
  453. static double usedfontsize = 0;
  454. static uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
  455. static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
  456. static long utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
  457. static long utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
  458. /* Font Ring Cache */
  459. enum {
  460. FRC_NORMAL,
  461. FRC_ITALIC,
  462. FRC_BOLD,
  463. FRC_ITALICBOLD
  464. };
  465. typedef struct {
  466. XftFont *font;
  467. int flags;
  468. } Fontcache;
  469. /* Fontcache is an array now. A new font will be appended to the array. */
  470. static Fontcache frc[16];
  471. static int frclen = 0;
  472. ssize_t
  473. xwrite(int fd, const char *s, size_t len) {
  474. size_t aux = len;
  475. while(len > 0) {
  476. ssize_t r = write(fd, s, len);
  477. if(r < 0)
  478. return r;
  479. len -= r;
  480. s += r;
  481. }
  482. return aux;
  483. }
  484. void *
  485. xmalloc(size_t len) {
  486. void *p = malloc(len);
  487. if(!p)
  488. die("Out of memory\n");
  489. return p;
  490. }
  491. void *
  492. xrealloc(void *p, size_t len) {
  493. if((p = realloc(p, len)) == NULL)
  494. die("Out of memory\n");
  495. return p;
  496. }
  497. char *
  498. xstrdup(char *s) {
  499. if((s = strdup(s)) == NULL)
  500. die("Out of memory\n");
  501. return s;
  502. }
  503. size_t
  504. utf8decode(char *c, long *u, size_t clen) {
  505. size_t i, j, len, type;
  506. long udecoded;
  507. *u = UTF_INVALID;
  508. if(!clen)
  509. return 0;
  510. udecoded = utf8decodebyte(c[0], &len);
  511. if(!BETWEEN(len, 1, UTF_SIZ))
  512. return 1;
  513. for(i = 1, j = 1; i < clen && j < len; ++i, ++j) {
  514. udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
  515. if(type != 0)
  516. return j;
  517. }
  518. if(j < len)
  519. return 0;
  520. *u = udecoded;
  521. utf8validate(u, len);
  522. return len;
  523. }
  524. long
  525. utf8decodebyte(char c, size_t *i) {
  526. for(*i = 0; *i < LEN(utfmask); ++(*i))
  527. if(((uchar)c & utfmask[*i]) == utfbyte[*i])
  528. return (uchar)c & ~utfmask[*i];
  529. return 0;
  530. }
  531. size_t
  532. utf8encode(long u, char *c, size_t clen) {
  533. size_t len, i;
  534. len = utf8validate(&u, 0);
  535. if(clen < len)
  536. return 0;
  537. for(i = len - 1; i != 0; --i) {
  538. c[i] = utf8encodebyte(u, 0);
  539. u >>= 6;
  540. }
  541. c[0] = utf8encodebyte(u, len);
  542. return len;
  543. }
  544. char
  545. utf8encodebyte(long u, size_t i) {
  546. return utfbyte[i] | (u & ~utfmask[i]);
  547. }
  548. size_t
  549. utf8len(char *c) {
  550. return utf8decode(c, &(long){0}, UTF_SIZ);
  551. }
  552. size_t
  553. utf8validate(long *u, size_t i) {
  554. if(!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
  555. *u = UTF_INVALID;
  556. for(i = 1; *u > utfmax[i]; ++i)
  557. ;
  558. return i;
  559. }
  560. static void
  561. selinit(void) {
  562. memset(&sel.tclick1, 0, sizeof(sel.tclick1));
  563. memset(&sel.tclick2, 0, sizeof(sel.tclick2));
  564. sel.mode = 0;
  565. sel.ob.x = -1;
  566. sel.clip = NULL;
  567. sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
  568. if(sel.xtarget == None)
  569. sel.xtarget = XA_STRING;
  570. }
  571. static int
  572. x2col(int x) {
  573. x -= borderpx;
  574. x /= xw.cw;
  575. return LIMIT(x, 0, term.col-1);
  576. }
  577. static int
  578. y2row(int y) {
  579. y -= borderpx;
  580. y /= xw.ch;
  581. return LIMIT(y, 0, term.row-1);
  582. }
  583. static void
  584. selsort(void) {
  585. if(sel.ob.y == sel.oe.y) {
  586. sel.nb.x = MIN(sel.ob.x, sel.oe.x);
  587. sel.ne.x = MAX(sel.ob.x, sel.oe.x);
  588. } else {
  589. sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
  590. sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
  591. }
  592. sel.nb.y = MIN(sel.ob.y, sel.oe.y);
  593. sel.ne.y = MAX(sel.ob.y, sel.oe.y);
  594. }
  595. static inline bool
  596. selected(int x, int y) {
  597. if(sel.ne.y == y && sel.nb.y == y)
  598. return BETWEEN(x, sel.nb.x, sel.ne.x);
  599. if(sel.type == SEL_RECTANGULAR) {
  600. return ((sel.nb.y <= y && y <= sel.ne.y)
  601. && (sel.nb.x <= x && x <= sel.ne.x));
  602. }
  603. return ((sel.nb.y < y && y < sel.ne.y)
  604. || (y == sel.ne.y && x <= sel.ne.x))
  605. || (y == sel.nb.y && x >= sel.nb.x
  606. && (x <= sel.ne.x || sel.nb.y != sel.ne.y));
  607. }
  608. void
  609. selsnap(int mode, int *x, int *y, int direction) {
  610. int i;
  611. switch(mode) {
  612. case SNAP_WORD:
  613. /*
  614. * Snap around if the word wraps around at the end or
  615. * beginning of a line.
  616. */
  617. for(;;) {
  618. if(direction < 0 && *x <= 0) {
  619. if(*y > 0 && term.line[*y - 1][term.col-1].mode
  620. & ATTR_WRAP) {
  621. *y -= 1;
  622. *x = term.col-1;
  623. } else {
  624. break;
  625. }
  626. }
  627. if(direction > 0 && *x >= term.col-1) {
  628. if(*y < term.row-1 && term.line[*y][*x].mode
  629. & ATTR_WRAP) {
  630. *y += 1;
  631. *x = 0;
  632. } else {
  633. break;
  634. }
  635. }
  636. if(term.line[*y][*x+direction].mode & ATTR_WDUMMY) {
  637. *x += direction;
  638. continue;
  639. }
  640. if(strchr(worddelimiters,
  641. term.line[*y][*x+direction].c[0])) {
  642. break;
  643. }
  644. *x += direction;
  645. }
  646. break;
  647. case SNAP_LINE:
  648. /*
  649. * Snap around if the the previous line or the current one
  650. * has set ATTR_WRAP at its end. Then the whole next or
  651. * previous line will be selected.
  652. */
  653. *x = (direction < 0) ? 0 : term.col - 1;
  654. if(direction < 0 && *y > 0) {
  655. for(; *y > 0; *y += direction) {
  656. if(!(term.line[*y-1][term.col-1].mode
  657. & ATTR_WRAP)) {
  658. break;
  659. }
  660. }
  661. } else if(direction > 0 && *y < term.row-1) {
  662. for(; *y < term.row; *y += direction) {
  663. if(!(term.line[*y][term.col-1].mode
  664. & ATTR_WRAP)) {
  665. break;
  666. }
  667. }
  668. }
  669. break;
  670. default:
  671. /*
  672. * Select the whole line when the end of line is reached.
  673. */
  674. if(direction > 0) {
  675. i = term.col;
  676. while(--i > 0 && term.line[*y][i].c[0] == ' ')
  677. /* nothing */;
  678. if(i > 0 && i < *x)
  679. *x = term.col - 1;
  680. }
  681. break;
  682. }
  683. }
  684. void
  685. getbuttoninfo(XEvent *e) {
  686. int type;
  687. uint state = e->xbutton.state &~Button1Mask;
  688. sel.alt = IS_SET(MODE_ALTSCREEN);
  689. sel.oe.x = x2col(e->xbutton.x);
  690. sel.oe.y = y2row(e->xbutton.y);
  691. if(sel.ob.y < sel.oe.y
  692. || (sel.ob.y == sel.oe.y && sel.ob.x < sel.oe.x)) {
  693. selsnap(sel.snap, &sel.ob.x, &sel.ob.y, -1);
  694. selsnap(sel.snap, &sel.oe.x, &sel.oe.y, +1);
  695. } else {
  696. selsnap(sel.snap, &sel.oe.x, &sel.oe.y, -1);
  697. selsnap(sel.snap, &sel.ob.x, &sel.ob.y, +1);
  698. }
  699. selsort();
  700. sel.type = SEL_REGULAR;
  701. for(type = 1; type < LEN(selmasks); ++type) {
  702. if(match(selmasks[type], state)) {
  703. sel.type = type;
  704. break;
  705. }
  706. }
  707. }
  708. void
  709. mousereport(XEvent *e) {
  710. int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
  711. button = e->xbutton.button, state = e->xbutton.state,
  712. len;
  713. char buf[40];
  714. static int ox, oy;
  715. /* from urxvt */
  716. if(e->xbutton.type == MotionNotify) {
  717. if(x == ox && y == oy)
  718. return;
  719. if(!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
  720. return;
  721. /* MOUSE_MOTION: no reporting if no button is pressed */
  722. if(IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
  723. return;
  724. button = oldbutton + 32;
  725. ox = x;
  726. oy = y;
  727. } else {
  728. if(!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
  729. button = 3;
  730. } else {
  731. button -= Button1;
  732. if(button >= 3)
  733. button += 64 - 3;
  734. }
  735. if(e->xbutton.type == ButtonPress) {
  736. oldbutton = button;
  737. ox = x;
  738. oy = y;
  739. } else if(e->xbutton.type == ButtonRelease) {
  740. oldbutton = 3;
  741. /* MODE_MOUSEX10: no button release reporting */
  742. if(IS_SET(MODE_MOUSEX10))
  743. return;
  744. }
  745. }
  746. if(!IS_SET(MODE_MOUSEX10)) {
  747. button += (state & ShiftMask ? 4 : 0)
  748. + (state & Mod4Mask ? 8 : 0)
  749. + (state & ControlMask ? 16 : 0);
  750. }
  751. len = 0;
  752. if(IS_SET(MODE_MOUSESGR)) {
  753. len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
  754. button, x+1, y+1,
  755. e->xbutton.type == ButtonRelease ? 'm' : 'M');
  756. } else if(x < 223 && y < 223) {
  757. len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
  758. 32+button, 32+x+1, 32+y+1);
  759. } else {
  760. return;
  761. }
  762. ttywrite(buf, len);
  763. }
  764. void
  765. bpress(XEvent *e) {
  766. struct timeval now;
  767. Mousekey *mk;
  768. if(IS_SET(MODE_MOUSE)) {
  769. mousereport(e);
  770. return;
  771. }
  772. for(mk = mshortcuts; mk < mshortcuts + LEN(mshortcuts); mk++) {
  773. if(e->xbutton.button == mk->b
  774. && match(mk->mask, e->xbutton.state)) {
  775. ttysend(mk->s, strlen(mk->s));
  776. return;
  777. }
  778. }
  779. if(e->xbutton.button == Button1) {
  780. gettimeofday(&now, NULL);
  781. /* Clear previous selection, logically and visually. */
  782. selclear(NULL);
  783. sel.mode = 1;
  784. sel.type = SEL_REGULAR;
  785. sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
  786. sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
  787. /*
  788. * If the user clicks below predefined timeouts specific
  789. * snapping behaviour is exposed.
  790. */
  791. if(TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
  792. sel.snap = SNAP_LINE;
  793. } else if(TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
  794. sel.snap = SNAP_WORD;
  795. } else {
  796. sel.snap = 0;
  797. }
  798. selsnap(sel.snap, &sel.ob.x, &sel.ob.y, -1);
  799. selsnap(sel.snap, &sel.oe.x, &sel.oe.y, +1);
  800. selsort();
  801. /*
  802. * Draw selection, unless it's regular and we don't want to
  803. * make clicks visible
  804. */
  805. if(sel.snap != 0) {
  806. sel.mode++;
  807. tsetdirt(sel.nb.y, sel.ne.y);
  808. }
  809. sel.tclick2 = sel.tclick1;
  810. sel.tclick1 = now;
  811. }
  812. }
  813. char *
  814. getsel(void) {
  815. char *str, *ptr;
  816. int x, y, bufsize, size, i, ex;
  817. Glyph *gp, *last;
  818. if(sel.ob.x == -1) {
  819. str = NULL;
  820. } else {
  821. bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
  822. ptr = str = xmalloc(bufsize);
  823. /* append every set & selected glyph to the selection */
  824. for(y = sel.nb.y; y < sel.ne.y + 1; y++) {
  825. gp = &term.line[y][0];
  826. last = &gp[term.col-1];
  827. while(last >= gp && !(selected(last - gp, y) &&
  828. strcmp(last->c, " ") != 0)) {
  829. --last;
  830. }
  831. for(x = 0; gp <= last; x++, ++gp) {
  832. if(!selected(x, y) || (gp->mode & ATTR_WDUMMY))
  833. continue;
  834. size = utf8len(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 && x > 0 && !((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. return str;
  867. }
  868. void
  869. selcopy(void) {
  870. xsetsel(getsel());
  871. }
  872. void
  873. selnotify(XEvent *e) {
  874. ulong nitems, ofs, rem;
  875. int format;
  876. uchar *data, *last, *repl;
  877. Atom type;
  878. ofs = 0;
  879. do {
  880. if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
  881. False, AnyPropertyType, &type, &format,
  882. &nitems, &rem, &data)) {
  883. fprintf(stderr, "Clipboard allocation failed\n");
  884. return;
  885. }
  886. /*
  887. * As seen in getsel:
  888. * Line endings are inconsistent in the terminal and GUI world
  889. * copy and pasting. When receiving some selection data,
  890. * replace all '\n' with '\r'.
  891. * FIXME: Fix the computer world.
  892. */
  893. repl = data;
  894. last = data + nitems * format / 8;
  895. while((repl = memchr(repl, '\n', last - repl))) {
  896. *repl++ = '\r';
  897. }
  898. if(IS_SET(MODE_BRCKTPASTE))
  899. ttywrite("\033[200~", 6);
  900. ttysend((char *)data, nitems * format / 8);
  901. if(IS_SET(MODE_BRCKTPASTE))
  902. ttywrite("\033[201~", 6);
  903. XFree(data);
  904. /* number of 32-bit chunks returned */
  905. ofs += nitems * format / 32;
  906. } while(rem > 0);
  907. }
  908. void
  909. selpaste(const Arg *dummy) {
  910. XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
  911. xw.win, CurrentTime);
  912. }
  913. void
  914. clippaste(const Arg *dummy) {
  915. Atom clipboard;
  916. clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
  917. XConvertSelection(xw.dpy, clipboard, sel.xtarget, XA_PRIMARY,
  918. xw.win, CurrentTime);
  919. }
  920. void
  921. selclear(XEvent *e) {
  922. if(sel.ob.x == -1)
  923. return;
  924. sel.ob.x = -1;
  925. tsetdirt(sel.nb.y, sel.ne.y);
  926. }
  927. void
  928. selrequest(XEvent *e) {
  929. XSelectionRequestEvent *xsre;
  930. XSelectionEvent xev;
  931. Atom xa_targets, string;
  932. xsre = (XSelectionRequestEvent *) e;
  933. xev.type = SelectionNotify;
  934. xev.requestor = xsre->requestor;
  935. xev.selection = xsre->selection;
  936. xev.target = xsre->target;
  937. xev.time = xsre->time;
  938. /* reject */
  939. xev.property = None;
  940. xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
  941. if(xsre->target == xa_targets) {
  942. /* respond with the supported type */
  943. string = sel.xtarget;
  944. XChangeProperty(xsre->display, xsre->requestor, xsre->property,
  945. XA_ATOM, 32, PropModeReplace,
  946. (uchar *) &string, 1);
  947. xev.property = xsre->property;
  948. } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
  949. XChangeProperty(xsre->display, xsre->requestor, xsre->property,
  950. xsre->target, 8, PropModeReplace,
  951. (uchar *) sel.clip, strlen(sel.clip));
  952. xev.property = xsre->property;
  953. }
  954. /* all done, send a notification to the listener */
  955. if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
  956. fprintf(stderr, "Error sending SelectionNotify event\n");
  957. }
  958. void
  959. xsetsel(char *str) {
  960. /* register the selection for both the clipboard and the primary */
  961. Atom clipboard;
  962. free(sel.clip);
  963. sel.clip = str;
  964. XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
  965. clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
  966. XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
  967. }
  968. void
  969. brelease(XEvent *e) {
  970. if(IS_SET(MODE_MOUSE)) {
  971. mousereport(e);
  972. return;
  973. }
  974. if(e->xbutton.button == Button2) {
  975. selpaste(NULL);
  976. } else if(e->xbutton.button == Button1) {
  977. if(sel.mode < 2) {
  978. selclear(NULL);
  979. } else {
  980. getbuttoninfo(e);
  981. selcopy();
  982. }
  983. sel.mode = 0;
  984. tsetdirt(sel.nb.y, sel.ne.y);
  985. }
  986. }
  987. void
  988. bmotion(XEvent *e) {
  989. int oldey, oldex, oldsby, oldsey;
  990. if(IS_SET(MODE_MOUSE)) {
  991. mousereport(e);
  992. return;
  993. }
  994. if(!sel.mode)
  995. return;
  996. sel.mode++;
  997. oldey = sel.oe.y;
  998. oldex = sel.oe.x;
  999. oldsby = sel.nb.y;
  1000. oldsey = sel.ne.y;
  1001. getbuttoninfo(e);
  1002. if(oldey != sel.oe.y || oldex != sel.oe.x)
  1003. tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
  1004. }
  1005. void
  1006. die(const char *errstr, ...) {
  1007. va_list ap;
  1008. va_start(ap, errstr);
  1009. vfprintf(stderr, errstr, ap);
  1010. va_end(ap);
  1011. exit(EXIT_FAILURE);
  1012. }
  1013. void
  1014. execsh(void) {
  1015. char **args;
  1016. char *envshell = getenv("SHELL");
  1017. const struct passwd *pass = getpwuid(getuid());
  1018. char buf[sizeof(long) * 8 + 1];
  1019. unsetenv("COLUMNS");
  1020. unsetenv("LINES");
  1021. unsetenv("TERMCAP");
  1022. if(pass) {
  1023. setenv("LOGNAME", pass->pw_name, 1);
  1024. setenv("USER", pass->pw_name, 1);
  1025. setenv("SHELL", pass->pw_shell, 0);
  1026. setenv("HOME", pass->pw_dir, 0);
  1027. }
  1028. snprintf(buf, sizeof(buf), "%lu", xw.win);
  1029. setenv("WINDOWID", buf, 1);
  1030. signal(SIGCHLD, SIG_DFL);
  1031. signal(SIGHUP, SIG_DFL);
  1032. signal(SIGINT, SIG_DFL);
  1033. signal(SIGQUIT, SIG_DFL);
  1034. signal(SIGTERM, SIG_DFL);
  1035. signal(SIGALRM, SIG_DFL);
  1036. DEFAULT(envshell, shell);
  1037. setenv("TERM", termname, 1);
  1038. args = opt_cmd ? opt_cmd : (char *[]){envshell, "-i", NULL};
  1039. execvp(args[0], args);
  1040. exit(EXIT_FAILURE);
  1041. }
  1042. void
  1043. sigchld(int a) {
  1044. int stat = 0;
  1045. if(waitpid(pid, &stat, 0) < 0)
  1046. die("Waiting for pid %hd failed: %s\n", pid, strerror(errno));
  1047. if(WIFEXITED(stat)) {
  1048. exit(WEXITSTATUS(stat));
  1049. } else {
  1050. exit(EXIT_FAILURE);
  1051. }
  1052. }
  1053. void
  1054. ttynew(void) {
  1055. int m, s;
  1056. struct winsize w = {term.row, term.col, 0, 0};
  1057. /* seems to work fine on linux, openbsd and freebsd */
  1058. if(openpty(&m, &s, NULL, NULL, &w) < 0)
  1059. die("openpty failed: %s\n", strerror(errno));
  1060. switch(pid = fork()) {
  1061. case -1:
  1062. die("fork failed\n");
  1063. break;
  1064. case 0:
  1065. setsid(); /* create a new process group */
  1066. dup2(s, STDIN_FILENO);
  1067. dup2(s, STDOUT_FILENO);
  1068. dup2(s, STDERR_FILENO);
  1069. if(ioctl(s, TIOCSCTTY, NULL) < 0)
  1070. die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
  1071. close(s);
  1072. close(m);
  1073. execsh();
  1074. break;
  1075. default:
  1076. close(s);
  1077. cmdfd = m;
  1078. signal(SIGCHLD, sigchld);
  1079. if(opt_io) {
  1080. term.mode |= MODE_PRINT;
  1081. iofd = (!strcmp(opt_io, "-")) ?
  1082. STDOUT_FILENO :
  1083. open(opt_io, O_WRONLY | O_CREAT, 0666);
  1084. if(iofd < 0) {
  1085. fprintf(stderr, "Error opening %s:%s\n",
  1086. opt_io, strerror(errno));
  1087. }
  1088. }
  1089. break;
  1090. }
  1091. }
  1092. void
  1093. ttyread(void) {
  1094. static char buf[BUFSIZ];
  1095. static int buflen = 0;
  1096. char *ptr;
  1097. char s[UTF_SIZ];
  1098. int charsize; /* size of utf8 char in bytes */
  1099. long unicodep;
  1100. int ret;
  1101. /* append read bytes to unprocessed bytes */
  1102. if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
  1103. die("Couldn't read from shell: %s\n", strerror(errno));
  1104. /* process every complete utf8 char */
  1105. buflen += ret;
  1106. ptr = buf;
  1107. while((charsize = utf8decode(ptr, &unicodep, buflen))) {
  1108. utf8encode(unicodep, s, UTF_SIZ);
  1109. tputc(s, charsize);
  1110. ptr += charsize;
  1111. buflen -= charsize;
  1112. }
  1113. /* keep any uncomplete utf8 char for the next call */
  1114. memmove(buf, ptr, buflen);
  1115. }
  1116. void
  1117. ttywrite(const char *s, size_t n) {
  1118. if(xwrite(cmdfd, s, n) == -1)
  1119. die("write error on tty: %s\n", strerror(errno));
  1120. }
  1121. void
  1122. ttysend(char *s, size_t n) {
  1123. ttywrite(s, n);
  1124. if(IS_SET(MODE_ECHO))
  1125. techo(s, n);
  1126. }
  1127. void
  1128. ttyresize(void) {
  1129. struct winsize w;
  1130. w.ws_row = term.row;
  1131. w.ws_col = term.col;
  1132. w.ws_xpixel = xw.tw;
  1133. w.ws_ypixel = xw.th;
  1134. if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
  1135. fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno));
  1136. }
  1137. int
  1138. tattrset(int attr) {
  1139. int i, j;
  1140. for(i = 0; i < term.row-1; i++) {
  1141. for(j = 0; j < term.col-1; j++) {
  1142. if(term.line[i][j].mode & attr)
  1143. return 1;
  1144. }
  1145. }
  1146. return 0;
  1147. }
  1148. void
  1149. tsetdirt(int top, int bot) {
  1150. int i;
  1151. LIMIT(top, 0, term.row-1);
  1152. LIMIT(bot, 0, term.row-1);
  1153. for(i = top; i <= bot; i++)
  1154. term.dirty[i] = 1;
  1155. }
  1156. void
  1157. tsetdirtattr(int attr) {
  1158. int i, j;
  1159. for(i = 0; i < term.row-1; i++) {
  1160. for(j = 0; j < term.col-1; j++) {
  1161. if(term.line[i][j].mode & attr) {
  1162. tsetdirt(i, i);
  1163. break;
  1164. }
  1165. }
  1166. }
  1167. }
  1168. void
  1169. tfulldirt(void) {
  1170. tsetdirt(0, term.row-1);
  1171. }
  1172. void
  1173. tcursor(int mode) {
  1174. static TCursor c[2];
  1175. bool alt = IS_SET(MODE_ALTSCREEN);
  1176. if(mode == CURSOR_SAVE) {
  1177. c[alt] = term.c;
  1178. } else if(mode == CURSOR_LOAD) {
  1179. term.c = c[alt];
  1180. tmoveto(c[alt].x, c[alt].y);
  1181. }
  1182. }
  1183. void
  1184. treset(void) {
  1185. uint i;
  1186. term.c = (TCursor){{
  1187. .mode = ATTR_NULL,
  1188. .fg = defaultfg,
  1189. .bg = defaultbg
  1190. }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
  1191. memset(term.tabs, 0, term.col * sizeof(*term.tabs));
  1192. for(i = tabspaces; i < term.col; i += tabspaces)
  1193. term.tabs[i] = 1;
  1194. term.top = 0;
  1195. term.bot = term.row - 1;
  1196. term.mode = MODE_WRAP;
  1197. memset(term.trantbl, sizeof(term.trantbl), CS_USA);
  1198. term.charset = 0;
  1199. tclearregion(0, 0, term.col-1, term.row-1);
  1200. tmoveto(0, 0);
  1201. tcursor(CURSOR_SAVE);
  1202. }
  1203. void
  1204. tnew(int col, int row) {
  1205. term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
  1206. tresize(col, row);
  1207. term.numlock = 1;
  1208. treset();
  1209. }
  1210. void
  1211. tswapscreen(void) {
  1212. Line *tmp = term.line;
  1213. term.line = term.alt;
  1214. term.alt = tmp;
  1215. term.mode ^= MODE_ALTSCREEN;
  1216. tfulldirt();
  1217. }
  1218. void
  1219. tscrolldown(int orig, int n) {
  1220. int i;
  1221. Line temp;
  1222. LIMIT(n, 0, term.bot-orig+1);
  1223. tsetdirt(orig, term.bot-n);
  1224. tclearregion(0, term.bot-n+1, term.col-1, term.bot);
  1225. for(i = term.bot; i >= orig+n; i--) {
  1226. temp = term.line[i];
  1227. term.line[i] = term.line[i-n];
  1228. term.line[i-n] = temp;
  1229. }
  1230. selscroll(orig, n);
  1231. }
  1232. void
  1233. tscrollup(int orig, int n) {
  1234. int i;
  1235. Line temp;
  1236. LIMIT(n, 0, term.bot-orig+1);
  1237. tclearregion(0, orig, term.col-1, orig+n-1);
  1238. tsetdirt(orig+n, term.bot);
  1239. for(i = orig; i <= term.bot-n; i++) {
  1240. temp = term.line[i];
  1241. term.line[i] = term.line[i+n];
  1242. term.line[i+n] = temp;
  1243. }
  1244. selscroll(orig, -n);
  1245. }
  1246. void
  1247. selscroll(int orig, int n) {
  1248. if(sel.ob.x == -1)
  1249. return;
  1250. if(BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
  1251. if((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
  1252. selclear(NULL);
  1253. return;
  1254. }
  1255. if(sel.type == SEL_RECTANGULAR) {
  1256. if(sel.ob.y < term.top)
  1257. sel.ob.y = term.top;
  1258. if(sel.oe.y > term.bot)
  1259. sel.oe.y = term.bot;
  1260. } else {
  1261. if(sel.ob.y < term.top) {
  1262. sel.ob.y = term.top;
  1263. sel.ob.x = 0;
  1264. }
  1265. if(sel.oe.y > term.bot) {
  1266. sel.oe.y = term.bot;
  1267. sel.oe.x = term.col;
  1268. }
  1269. }
  1270. selsort();
  1271. }
  1272. }
  1273. void
  1274. tnewline(int first_col) {
  1275. int y = term.c.y;
  1276. if(y == term.bot) {
  1277. tscrollup(term.top, 1);
  1278. } else {
  1279. y++;
  1280. }
  1281. tmoveto(first_col ? 0 : term.c.x, y);
  1282. }
  1283. void
  1284. csiparse(void) {
  1285. char *p = csiescseq.buf, *np;
  1286. long int v;
  1287. csiescseq.narg = 0;
  1288. if(*p == '?') {
  1289. csiescseq.priv = 1;
  1290. p++;
  1291. }
  1292. csiescseq.buf[csiescseq.len] = '\0';
  1293. while(p < csiescseq.buf+csiescseq.len) {
  1294. np = NULL;
  1295. v = strtol(p, &np, 10);
  1296. if(np == p)
  1297. v = 0;
  1298. if(v == LONG_MAX || v == LONG_MIN)
  1299. v = -1;
  1300. csiescseq.arg[csiescseq.narg++] = v;
  1301. p = np;
  1302. if(*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
  1303. break;
  1304. p++;
  1305. }
  1306. csiescseq.mode = *p;
  1307. }
  1308. /* for absolute user moves, when decom is set */
  1309. void
  1310. tmoveato(int x, int y) {
  1311. tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
  1312. }
  1313. void
  1314. tmoveto(int x, int y) {
  1315. int miny, maxy;
  1316. if(term.c.state & CURSOR_ORIGIN) {
  1317. miny = term.top;
  1318. maxy = term.bot;
  1319. } else {
  1320. miny = 0;
  1321. maxy = term.row - 1;
  1322. }
  1323. LIMIT(x, 0, term.col-1);
  1324. LIMIT(y, miny, maxy);
  1325. term.c.state &= ~CURSOR_WRAPNEXT;
  1326. term.c.x = x;
  1327. term.c.y = y;
  1328. }
  1329. void
  1330. tsetchar(char *c, Glyph *attr, int x, int y) {
  1331. static char *vt100_0[62] = { /* 0x41 - 0x7e */
  1332. "", "", "", "", "", "", "", /* A - G */
  1333. 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
  1334. 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
  1335. 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
  1336. "", "", "", "", "", "", "°", "±", /* ` - g */
  1337. "", "", "", "", "", "", "", "", /* h - o */
  1338. "", "", "", "", "", "", "", "", /* p - w */
  1339. "", "", "", "π", "", "£", "·", /* x - ~ */
  1340. };
  1341. /*
  1342. * The table is proudly stolen from rxvt.
  1343. */
  1344. if(attr->mode & ATTR_GFX) {
  1345. if(BETWEEN(c[0], 0x41, 0x7e) && vt100_0[c[0] - 0x41]) {
  1346. c = vt100_0[c[0] - 0x41];
  1347. }
  1348. }
  1349. if(term.line[y][x].mode & ATTR_WIDE) {
  1350. if(x+1 < term.col) {
  1351. term.line[y][x+1].c[0] = ' ';
  1352. term.line[y][x+1].mode &= ~ATTR_WDUMMY;
  1353. }
  1354. } else if(term.line[y][x].mode & ATTR_WDUMMY) {
  1355. term.line[y][x-1].c[0] = ' ';
  1356. term.line[y][x-1].mode &= ~ATTR_WIDE;
  1357. }
  1358. term.dirty[y] = 1;
  1359. term.line[y][x] = *attr;
  1360. memcpy(term.line[y][x].c, c, UTF_SIZ);
  1361. }
  1362. void
  1363. tclearregion(int x1, int y1, int x2, int y2) {
  1364. int x, y, temp;
  1365. if(x1 > x2)
  1366. temp = x1, x1 = x2, x2 = temp;
  1367. if(y1 > y2)
  1368. temp = y1, y1 = y2, y2 = temp;
  1369. LIMIT(x1, 0, term.col-1);
  1370. LIMIT(x2, 0, term.col-1);
  1371. LIMIT(y1, 0, term.row-1);
  1372. LIMIT(y2, 0, term.row-1);
  1373. for(y = y1; y <= y2; y++) {
  1374. term.dirty[y] = 1;
  1375. for(x = x1; x <= x2; x++) {
  1376. if(selected(x, y))
  1377. selclear(NULL);
  1378. term.line[y][x] = term.c.attr;
  1379. memcpy(term.line[y][x].c, " ", 2);
  1380. }
  1381. }
  1382. }
  1383. void
  1384. tdeletechar(int n) {
  1385. int dst, src, size;
  1386. Glyph *line;
  1387. LIMIT(n, 0, term.col - term.c.x);
  1388. dst = term.c.x;
  1389. src = term.c.x + n;
  1390. size = term.col - src;
  1391. line = term.line[term.c.y];
  1392. memmove(&line[dst], &line[src], size * sizeof(Glyph));
  1393. tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
  1394. }
  1395. void
  1396. tinsertblank(int n) {
  1397. int dst, src, size;
  1398. Glyph *line;
  1399. LIMIT(n, 0, term.col - term.c.x);
  1400. dst = term.c.x + n;
  1401. src = term.c.x;
  1402. size = term.col - dst;
  1403. line = term.line[term.c.y];
  1404. memmove(&line[dst], &line[src], size * sizeof(Glyph));
  1405. tclearregion(src, term.c.y, dst - 1, term.c.y);
  1406. }
  1407. void
  1408. tinsertblankline(int n) {
  1409. if(BETWEEN(term.c.y, term.top, term.bot))
  1410. tscrolldown(term.c.y, n);
  1411. }
  1412. void
  1413. tdeleteline(int n) {
  1414. if(BETWEEN(term.c.y, term.top, term.bot))
  1415. tscrollup(term.c.y, n);
  1416. }
  1417. int32_t
  1418. tdefcolor(int *attr, int *npar, int l) {
  1419. int32_t idx = -1;
  1420. uint r, g, b;
  1421. switch (attr[*npar + 1]) {
  1422. case 2: /* direct colour in RGB space */
  1423. if (*npar + 4 >= l) {
  1424. fprintf(stderr,
  1425. "erresc(38): Incorrect number of parameters (%d)\n",
  1426. *npar);
  1427. break;
  1428. }
  1429. r = attr[*npar + 2];
  1430. g = attr[*npar + 3];
  1431. b = attr[*npar + 4];
  1432. *npar += 4;
  1433. if(!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255))
  1434. fprintf(stderr, "erresc: bad rgb color (%d,%d,%d)\n",
  1435. r, g, b);
  1436. else
  1437. idx = TRUECOLOR(r, g, b);
  1438. break;
  1439. case 5: /* indexed colour */
  1440. if (*npar + 2 >= l) {
  1441. fprintf(stderr,
  1442. "erresc(38): Incorrect number of parameters (%d)\n",
  1443. *npar);
  1444. break;
  1445. }
  1446. *npar += 2;
  1447. if(!BETWEEN(attr[*npar], 0, 255))
  1448. fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]);
  1449. else
  1450. idx = attr[*npar];
  1451. break;
  1452. case 0: /* implemented defined (only foreground) */
  1453. case 1: /* transparent */
  1454. case 3: /* direct colour in CMY space */
  1455. case 4: /* direct colour in CMYK space */
  1456. default:
  1457. fprintf(stderr,
  1458. "erresc(38): gfx attr %d unknown\n", attr[*npar]);
  1459. break;
  1460. }
  1461. return idx;
  1462. }
  1463. void
  1464. tsetattr(int *attr, int l) {
  1465. int i;
  1466. int32_t idx;
  1467. for(i = 0; i < l; i++) {
  1468. switch(attr[i]) {
  1469. case 0:
  1470. term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE \
  1471. | ATTR_BOLD | ATTR_ITALIC \
  1472. | ATTR_BLINK);
  1473. term.c.attr.fg = defaultfg;
  1474. term.c.attr.bg = defaultbg;
  1475. break;
  1476. case 1:
  1477. term.c.attr.mode |= ATTR_BOLD;
  1478. break;
  1479. case 3:
  1480. term.c.attr.mode |= ATTR_ITALIC;
  1481. break;
  1482. case 4:
  1483. term.c.attr.mode |= ATTR_UNDERLINE;
  1484. break;
  1485. case 5: /* slow blink */
  1486. case 6: /* rapid blink */
  1487. term.c.attr.mode |= ATTR_BLINK;
  1488. break;
  1489. case 7:
  1490. term.c.attr.mode |= ATTR_REVERSE;
  1491. break;
  1492. case 21:
  1493. case 22:
  1494. term.c.attr.mode &= ~ATTR_BOLD;
  1495. break;
  1496. case 23:
  1497. term.c.attr.mode &= ~ATTR_ITALIC;
  1498. break;
  1499. case 24:
  1500. term.c.attr.mode &= ~ATTR_UNDERLINE;
  1501. break;
  1502. case 25:
  1503. case 26:
  1504. term.c.attr.mode &= ~ATTR_BLINK;
  1505. break;
  1506. case 27:
  1507. term.c.attr.mode &= ~ATTR_REVERSE;
  1508. break;
  1509. case 38:
  1510. if ((idx = tdefcolor(attr, &i, l)) >= 0)
  1511. term.c.attr.fg = idx;
  1512. break;
  1513. case 39:
  1514. term.c.attr.fg = defaultfg;
  1515. break;
  1516. case 48:
  1517. if ((idx = tdefcolor(attr, &i, l)) >= 0)
  1518. term.c.attr.bg = idx;
  1519. break;
  1520. case 49:
  1521. term.c.attr.bg = defaultbg;
  1522. break;
  1523. default:
  1524. if(BETWEEN(attr[i], 30, 37)) {
  1525. term.c.attr.fg = attr[i] - 30;
  1526. } else if(BETWEEN(attr[i], 40, 47)) {
  1527. term.c.attr.bg = attr[i] - 40;
  1528. } else if(BETWEEN(attr[i], 90, 97)) {
  1529. term.c.attr.fg = attr[i] - 90 + 8;
  1530. } else if(BETWEEN(attr[i], 100, 107)) {
  1531. term.c.attr.bg = attr[i] - 100 + 8;
  1532. } else {
  1533. fprintf(stderr,
  1534. "erresc(default): gfx attr %d unknown\n",
  1535. attr[i]), csidump();
  1536. }
  1537. break;
  1538. }
  1539. }
  1540. }
  1541. void
  1542. tsetscroll(int t, int b) {
  1543. int temp;
  1544. LIMIT(t, 0, term.row-1);
  1545. LIMIT(b, 0, term.row-1);
  1546. if(t > b) {
  1547. temp = t;
  1548. t = b;
  1549. b = temp;
  1550. }
  1551. term.top = t;
  1552. term.bot = b;
  1553. }
  1554. void
  1555. tsetmode(bool priv, bool set, int *args, int narg) {
  1556. int *lim, mode;
  1557. bool alt;
  1558. for(lim = args + narg; args < lim; ++args) {
  1559. if(priv) {
  1560. switch(*args) {
  1561. case 1: /* DECCKM -- Cursor key */
  1562. MODBIT(term.mode, set, MODE_APPCURSOR);
  1563. break;
  1564. case 5: /* DECSCNM -- Reverse video */
  1565. mode = term.mode;
  1566. MODBIT(term.mode, set, MODE_REVERSE);
  1567. if(mode != term.mode)
  1568. redraw(REDRAW_TIMEOUT);
  1569. break;
  1570. case 6: /* DECOM -- Origin */
  1571. MODBIT(term.c.state, set, CURSOR_ORIGIN);
  1572. tmoveato(0, 0);
  1573. break;
  1574. case 7: /* DECAWM -- Auto wrap */
  1575. MODBIT(term.mode, set, MODE_WRAP);
  1576. break;
  1577. case 0: /* Error (IGNORED) */
  1578. case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
  1579. case 3: /* DECCOLM -- Column (IGNORED) */
  1580. case 4: /* DECSCLM -- Scroll (IGNORED) */
  1581. case 8: /* DECARM -- Auto repeat (IGNORED) */
  1582. case 18: /* DECPFF -- Printer feed (IGNORED) */
  1583. case 19: /* DECPEX -- Printer extent (IGNORED) */
  1584. case 42: /* DECNRCM -- National characters (IGNORED) */
  1585. case 12: /* att610 -- Start blinking cursor (IGNORED) */
  1586. break;
  1587. case 25: /* DECTCEM -- Text Cursor Enable Mode */
  1588. MODBIT(term.mode, !set, MODE_HIDE);
  1589. break;
  1590. case 9: /* X10 mouse compatibility mode */
  1591. xsetpointermotion(0);
  1592. MODBIT(term.mode, 0, MODE_MOUSE);
  1593. MODBIT(term.mode, set, MODE_MOUSEX10);
  1594. break;
  1595. case 1000: /* 1000: report button press */
  1596. xsetpointermotion(0);
  1597. MODBIT(term.mode, 0, MODE_MOUSE);
  1598. MODBIT(term.mode, set, MODE_MOUSEBTN);
  1599. break;
  1600. case 1002: /* 1002: report motion on button press */
  1601. xsetpointermotion(0);
  1602. MODBIT(term.mode, 0, MODE_MOUSE);
  1603. MODBIT(term.mode, set, MODE_MOUSEMOTION);
  1604. break;
  1605. case 1003: /* 1003: enable all mouse motions */
  1606. xsetpointermotion(set);
  1607. MODBIT(term.mode, 0, MODE_MOUSE);
  1608. MODBIT(term.mode, set, MODE_MOUSEMANY);
  1609. break;
  1610. case 1004: /* 1004: send focus events to tty */
  1611. MODBIT(term.mode, set, MODE_FOCUS);
  1612. break;
  1613. case 1006: /* 1006: extended reporting mode */
  1614. MODBIT(term.mode, set, MODE_MOUSESGR);
  1615. break;
  1616. case 1034:
  1617. MODBIT(term.mode, set, MODE_8BIT);
  1618. break;
  1619. case 1049: /* swap screen & set/restore cursor as xterm */
  1620. if (!allowaltscreen)
  1621. break;
  1622. tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
  1623. /* FALLTHRU */
  1624. case 47: /* swap screen */
  1625. case 1047:
  1626. if (!allowaltscreen)
  1627. break;
  1628. alt = IS_SET(MODE_ALTSCREEN);
  1629. if(alt) {
  1630. tclearregion(0, 0, term.col-1,
  1631. term.row-1);
  1632. }
  1633. if(set ^ alt) /* set is always 1 or 0 */
  1634. tswapscreen();
  1635. if(*args != 1049)
  1636. break;
  1637. /* FALLTRU */
  1638. case 1048:
  1639. tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
  1640. break;
  1641. case 2004: /* 2004: bracketed paste mode */
  1642. MODBIT(term.mode, set, MODE_BRCKTPASTE);
  1643. break;
  1644. /* Not implemented mouse modes. See comments there. */
  1645. case 1001: /* mouse highlight mode; can hang the
  1646. terminal by design when implemented. */
  1647. case 1005: /* UTF-8 mouse mode; will confuse
  1648. applications not supporting UTF-8
  1649. and luit. */
  1650. case 1015: /* urxvt mangled mouse mode; incompatible
  1651. and can be mistaken for other control
  1652. codes. */
  1653. default:
  1654. fprintf(stderr,
  1655. "erresc: unknown private set/reset mode %d\n",
  1656. *args);
  1657. break;
  1658. }
  1659. } else {
  1660. switch(*args) {
  1661. case 0: /* Error (IGNORED) */
  1662. break;
  1663. case 2: /* KAM -- keyboard action */
  1664. MODBIT(term.mode, set, MODE_KBDLOCK);
  1665. break;
  1666. case 4: /* IRM -- Insertion-replacement */
  1667. MODBIT(term.mode, set, MODE_INSERT);
  1668. break;
  1669. case 12: /* SRM -- Send/Receive */
  1670. MODBIT(term.mode, !set, MODE_ECHO);
  1671. break;
  1672. case 20: /* LNM -- Linefeed/new line */
  1673. MODBIT(term.mode, set, MODE_CRLF);
  1674. break;
  1675. default:
  1676. fprintf(stderr,
  1677. "erresc: unknown set/reset mode %d\n",
  1678. *args);
  1679. break;
  1680. }
  1681. }
  1682. }
  1683. }
  1684. void
  1685. csihandle(void) {
  1686. char buf[40];
  1687. int len;
  1688. switch(csiescseq.mode) {
  1689. default:
  1690. unknown:
  1691. fprintf(stderr, "erresc: unknown csi ");
  1692. csidump();
  1693. /* die(""); */
  1694. break;
  1695. case '@': /* ICH -- Insert <n> blank char */
  1696. DEFAULT(csiescseq.arg[0], 1);
  1697. tinsertblank(csiescseq.arg[0]);
  1698. break;
  1699. case 'A': /* CUU -- Cursor <n> Up */
  1700. DEFAULT(csiescseq.arg[0], 1);
  1701. tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
  1702. break;
  1703. case 'B': /* CUD -- Cursor <n> Down */
  1704. case 'e': /* VPR --Cursor <n> Down */
  1705. DEFAULT(csiescseq.arg[0], 1);
  1706. tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
  1707. break;
  1708. case 'i': /* MC -- Media Copy */
  1709. switch(csiescseq.arg[0]) {
  1710. case 0:
  1711. tdump();
  1712. break;
  1713. case 1:
  1714. tdumpline(term.c.y);
  1715. break;
  1716. case 2:
  1717. tdumpsel();
  1718. break;
  1719. case 4:
  1720. term.mode &= ~MODE_PRINT;
  1721. break;
  1722. case 5:
  1723. term.mode |= MODE_PRINT;
  1724. break;
  1725. }
  1726. break;
  1727. case 'c': /* DA -- Device Attributes */
  1728. if(csiescseq.arg[0] == 0)
  1729. ttywrite(VT102ID, sizeof(VT102ID) - 1);
  1730. break;
  1731. case 'C': /* CUF -- Cursor <n> Forward */
  1732. case 'a': /* HPR -- Cursor <n> Forward */
  1733. DEFAULT(csiescseq.arg[0], 1);
  1734. tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
  1735. break;
  1736. case 'D': /* CUB -- Cursor <n> Backward */
  1737. DEFAULT(csiescseq.arg[0], 1);
  1738. tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
  1739. break;
  1740. case 'E': /* CNL -- Cursor <n> Down and first col */
  1741. DEFAULT(csiescseq.arg[0], 1);
  1742. tmoveto(0, term.c.y+csiescseq.arg[0]);
  1743. break;
  1744. case 'F': /* CPL -- Cursor <n> Up and first col */
  1745. DEFAULT(csiescseq.arg[0], 1);
  1746. tmoveto(0, term.c.y-csiescseq.arg[0]);
  1747. break;
  1748. case 'g': /* TBC -- Tabulation clear */
  1749. switch(csiescseq.arg[0]) {
  1750. case 0: /* clear current tab stop */
  1751. term.tabs[term.c.x] = 0;
  1752. break;
  1753. case 3: /* clear all the tabs */
  1754. memset(term.tabs, 0, term.col * sizeof(*term.tabs));
  1755. break;
  1756. default:
  1757. goto unknown;
  1758. }
  1759. break;
  1760. case 'G': /* CHA -- Move to <col> */
  1761. case '`': /* HPA */
  1762. DEFAULT(csiescseq.arg[0], 1);
  1763. tmoveto(csiescseq.arg[0]-1, term.c.y);
  1764. break;
  1765. case 'H': /* CUP -- Move to <row> <col> */
  1766. case 'f': /* HVP */
  1767. DEFAULT(csiescseq.arg[0], 1);
  1768. DEFAULT(csiescseq.arg[1], 1);
  1769. tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
  1770. break;
  1771. case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
  1772. DEFAULT(csiescseq.arg[0], 1);
  1773. tputtab(csiescseq.arg[0]);
  1774. break;
  1775. case 'J': /* ED -- Clear screen */
  1776. selclear(NULL);
  1777. switch(csiescseq.arg[0]) {
  1778. case 0: /* below */
  1779. tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
  1780. if(term.c.y < term.row-1) {
  1781. tclearregion(0, term.c.y+1, term.col-1,
  1782. term.row-1);
  1783. }
  1784. break;
  1785. case 1: /* above */
  1786. if(term.c.y > 1)
  1787. tclearregion(0, 0, term.col-1, term.c.y-1);
  1788. tclearregion(0, term.c.y, term.c.x, term.c.y);
  1789. break;
  1790. case 2: /* all */
  1791. tclearregion(0, 0, term.col-1, term.row-1);
  1792. break;
  1793. default:
  1794. goto unknown;
  1795. }
  1796. break;
  1797. case 'K': /* EL -- Clear line */
  1798. switch(csiescseq.arg[0]) {
  1799. case 0: /* right */
  1800. tclearregion(term.c.x, term.c.y, term.col-1,
  1801. term.c.y);
  1802. break;
  1803. case 1: /* left */
  1804. tclearregion(0, term.c.y, term.c.x, term.c.y);
  1805. break;
  1806. case 2: /* all */
  1807. tclearregion(0, term.c.y, term.col-1, term.c.y);
  1808. break;
  1809. }
  1810. break;
  1811. case 'S': /* SU -- Scroll <n> line up */
  1812. DEFAULT(csiescseq.arg[0], 1);
  1813. tscrollup(term.top, csiescseq.arg[0]);
  1814. break;
  1815. case 'T': /* SD -- Scroll <n> line down */
  1816. DEFAULT(csiescseq.arg[0], 1);
  1817. tscrolldown(term.top, csiescseq.arg[0]);
  1818. break;
  1819. case 'L': /* IL -- Insert <n> blank lines */
  1820. DEFAULT(csiescseq.arg[0], 1);
  1821. tinsertblankline(csiescseq.arg[0]);
  1822. break;
  1823. case 'l': /* RM -- Reset Mode */
  1824. tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
  1825. break;
  1826. case 'M': /* DL -- Delete <n> lines */
  1827. DEFAULT(csiescseq.arg[0], 1);
  1828. tdeleteline(csiescseq.arg[0]);
  1829. break;
  1830. case 'X': /* ECH -- Erase <n> char */
  1831. DEFAULT(csiescseq.arg[0], 1);
  1832. tclearregion(term.c.x, term.c.y,
  1833. term.c.x + csiescseq.arg[0] - 1, term.c.y);
  1834. break;
  1835. case 'P': /* DCH -- Delete <n> char */
  1836. DEFAULT(csiescseq.arg[0], 1);
  1837. tdeletechar(csiescseq.arg[0]);
  1838. break;
  1839. case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
  1840. DEFAULT(csiescseq.arg[0], 1);
  1841. tputtab(-csiescseq.arg[0]);
  1842. break;
  1843. case 'd': /* VPA -- Move to <row> */
  1844. DEFAULT(csiescseq.arg[0], 1);
  1845. tmoveato(term.c.x, csiescseq.arg[0]-1);
  1846. break;
  1847. case 'h': /* SM -- Set terminal mode */
  1848. tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
  1849. break;
  1850. case 'm': /* SGR -- Terminal attribute (color) */
  1851. tsetattr(csiescseq.arg, csiescseq.narg);
  1852. break;
  1853. case 'n': /* DSR – Device Status Report (cursor position) */
  1854. if (csiescseq.arg[0] == 6) {
  1855. len = snprintf(buf, sizeof(buf),"\033[%i;%iR",
  1856. term.c.y+1, term.c.x+1);
  1857. ttywrite(buf, len);
  1858. }
  1859. break;
  1860. case 'r': /* DECSTBM -- Set Scrolling Region */
  1861. if(csiescseq.priv) {
  1862. goto unknown;
  1863. } else {
  1864. DEFAULT(csiescseq.arg[0], 1);
  1865. DEFAULT(csiescseq.arg[1], term.row);
  1866. tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
  1867. tmoveato(0, 0);
  1868. }
  1869. break;
  1870. case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
  1871. tcursor(CURSOR_SAVE);
  1872. break;
  1873. case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
  1874. tcursor(CURSOR_LOAD);
  1875. break;
  1876. }
  1877. }
  1878. void
  1879. csidump(void) {
  1880. int i;
  1881. uint c;
  1882. printf("ESC[");
  1883. for(i = 0; i < csiescseq.len; i++) {
  1884. c = csiescseq.buf[i] & 0xff;
  1885. if(isprint(c)) {
  1886. putchar(c);
  1887. } else if(c == '\n') {
  1888. printf("(\\n)");
  1889. } else if(c == '\r') {
  1890. printf("(\\r)");
  1891. } else if(c == 0x1b) {
  1892. printf("(\\e)");
  1893. } else {
  1894. printf("(%02x)", c);
  1895. }
  1896. }
  1897. putchar('\n');
  1898. }
  1899. void
  1900. csireset(void) {
  1901. memset(&csiescseq, 0, sizeof(csiescseq));
  1902. }
  1903. void
  1904. strhandle(void) {
  1905. char *p = NULL;
  1906. int j, narg, par;
  1907. term.esc &= ~(ESC_STR_END|ESC_STR);
  1908. strparse();
  1909. narg = strescseq.narg;
  1910. par = atoi(strescseq.args[0]);
  1911. switch(strescseq.type) {
  1912. case ']': /* OSC -- Operating System Command */
  1913. switch(par) {
  1914. case 0:
  1915. case 1:
  1916. case 2:
  1917. if(narg > 1)
  1918. xsettitle(strescseq.args[1]);
  1919. return;
  1920. case 4: /* color set */
  1921. if(narg < 3)
  1922. break;
  1923. p = strescseq.args[2];
  1924. /* fall through */
  1925. case 104: /* color reset, here p = NULL */
  1926. j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
  1927. if (!xsetcolorname(j, p)) {
  1928. fprintf(stderr, "erresc: invalid color %s\n", p);
  1929. } else {
  1930. /*
  1931. * TODO if defaultbg color is changed, borders
  1932. * are dirty
  1933. */
  1934. redraw(0);
  1935. }
  1936. return;
  1937. }
  1938. break;
  1939. case 'k': /* old title set compatibility */
  1940. xsettitle(strescseq.args[0]);
  1941. return;
  1942. case 'P': /* DCS -- Device Control String */
  1943. case '_': /* APC -- Application Program Command */
  1944. case '^': /* PM -- Privacy Message */
  1945. return;
  1946. }
  1947. fprintf(stderr, "erresc: unknown str ");
  1948. strdump();
  1949. }
  1950. void
  1951. strparse(void) {
  1952. char *p = strescseq.buf;
  1953. strescseq.narg = 0;
  1954. strescseq.buf[strescseq.len] = '\0';
  1955. while(p && strescseq.narg < STR_ARG_SIZ)
  1956. strescseq.args[strescseq.narg++] = strsep(&p, ";");
  1957. }
  1958. void
  1959. strdump(void) {
  1960. int i;
  1961. uint c;
  1962. printf("ESC%c", strescseq.type);
  1963. for(i = 0; i < strescseq.len; i++) {
  1964. c = strescseq.buf[i] & 0xff;
  1965. if(c == '\0') {
  1966. return;
  1967. } else if(isprint(c)) {
  1968. putchar(c);
  1969. } else if(c == '\n') {
  1970. printf("(\\n)");
  1971. } else if(c == '\r') {
  1972. printf("(\\r)");
  1973. } else if(c == 0x1b) {
  1974. printf("(\\e)");
  1975. } else {
  1976. printf("(%02x)", c);
  1977. }
  1978. }
  1979. printf("ESC\\\n");
  1980. }
  1981. void
  1982. strreset(void) {
  1983. memset(&strescseq, 0, sizeof(strescseq));
  1984. }
  1985. void
  1986. tprinter(char *s, size_t len) {
  1987. if(iofd != -1 && xwrite(iofd, s, 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. void
  1995. toggleprinter(const Arg *arg) {
  1996. term.mode ^= MODE_PRINT;
  1997. }
  1998. void
  1999. printscreen(const Arg *arg) {
  2000. tdump();
  2001. }
  2002. void
  2003. printsel(const Arg *arg) {
  2004. tdumpsel();
  2005. }
  2006. void
  2007. tdumpsel(void) {
  2008. char *ptr;
  2009. if((ptr = getsel())) {
  2010. tprinter(ptr, strlen(ptr));
  2011. free(ptr);
  2012. }
  2013. }
  2014. void
  2015. tdumpline(int n) {
  2016. Glyph *bp, *end;
  2017. bp = &term.line[n][0];
  2018. end = &bp[term.col-1];
  2019. while(end > bp && !strcmp(" ", end->c))
  2020. --end;
  2021. if(bp != end || strcmp(bp->c, " ")) {
  2022. for( ;bp <= end; ++bp)
  2023. tprinter(bp->c, strlen(bp->c));
  2024. }
  2025. tprinter("\n", 1);
  2026. }
  2027. void
  2028. tdump(void) {
  2029. int i;
  2030. for(i = 0; i < term.row; ++i)
  2031. tdumpline(i);
  2032. }
  2033. void
  2034. tputtab(int n) {
  2035. uint x = term.c.x;
  2036. if(n > 0) {
  2037. while(x < term.col && n--)
  2038. for(++x; x < term.col && !term.tabs[x]; ++x)
  2039. /* nothing */ ;
  2040. } else if(n < 0) {
  2041. while(x > 0 && n++)
  2042. for(--x; x > 0 && !term.tabs[x]; --x)
  2043. /* nothing */ ;
  2044. }
  2045. tmoveto(x, term.c.y);
  2046. }
  2047. void
  2048. techo(char *buf, int len) {
  2049. for(; len > 0; buf++, len--) {
  2050. char c = *buf;
  2051. if(ISCONTROL(c)) { /* control code */
  2052. if(c & 0x80) {
  2053. c &= 0x7f;
  2054. tputc("^", 1);
  2055. tputc("[", 1);
  2056. } else if(c != '\n' && c != '\r' && c != '\t') {
  2057. c ^= '\x40';
  2058. tputc("^", 1);
  2059. }
  2060. tputc(&c, 1);
  2061. } else {
  2062. break;
  2063. }
  2064. }
  2065. if(len)
  2066. tputc(buf, len);
  2067. }
  2068. void
  2069. tdeftran(char ascii) {
  2070. char c, (*bp)[2];
  2071. static char tbl[][2] = {
  2072. {'0', CS_GRAPHIC0}, {'1', CS_GRAPHIC1}, {'A', CS_UK},
  2073. {'B', CS_USA}, {'<', CS_MULTI}, {'K', CS_GER},
  2074. {'5', CS_FIN}, {'C', CS_FIN},
  2075. {0, 0}
  2076. };
  2077. for (bp = &tbl[0]; (c = (*bp)[0]) && c != ascii; ++bp)
  2078. /* nothing */;
  2079. if (c == 0)
  2080. fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
  2081. else
  2082. term.trantbl[term.icharset] = (*bp)[1];
  2083. }
  2084. void
  2085. tselcs(void) {
  2086. MODBIT(term.c.attr.mode,
  2087. term.trantbl[term.charset] == CS_GRAPHIC0,
  2088. ATTR_GFX);
  2089. }
  2090. bool
  2091. tcontrolcode(uchar ascii) {
  2092. static char question[UTF_SIZ] = "?";
  2093. switch(ascii) {
  2094. case '\t': /* HT */
  2095. tputtab(1);
  2096. break;
  2097. case '\b': /* BS */
  2098. tmoveto(term.c.x-1, term.c.y);
  2099. break;
  2100. case '\r': /* CR */
  2101. tmoveto(0, term.c.y);
  2102. break;
  2103. case '\f': /* LF */
  2104. case '\v': /* VT */
  2105. case '\n': /* LF */
  2106. /* go to first col if the mode is set */
  2107. tnewline(IS_SET(MODE_CRLF));
  2108. break;
  2109. case '\a': /* BEL */
  2110. if(term.esc & ESC_STR_END) {
  2111. /* backwards compatibility to xterm */
  2112. strhandle();
  2113. } else {
  2114. if(!(xw.state & WIN_FOCUSED))
  2115. xseturgency(1);
  2116. if (bellvolume)
  2117. XBell(xw.dpy, bellvolume);
  2118. }
  2119. break;
  2120. case '\033': /* ESC */
  2121. csireset();
  2122. term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST);
  2123. term.esc |= ESC_START;
  2124. return 1;
  2125. case '\016': /* SO */
  2126. term.charset = 0;
  2127. tselcs();
  2128. break;
  2129. case '\017': /* SI */
  2130. term.charset = 1;
  2131. tselcs();
  2132. break;
  2133. case '\032': /* SUB */
  2134. tsetchar(question, &term.c.attr, term.c.x, term.c.y);
  2135. case '\030': /* CAN */
  2136. csireset();
  2137. break;
  2138. case '\005': /* ENQ (IGNORED) */
  2139. case '\000': /* NUL (IGNORED) */
  2140. case '\021': /* XON (IGNORED) */
  2141. case '\023': /* XOFF (IGNORED) */
  2142. case 0177: /* DEL (IGNORED) */
  2143. case 0x84: /* TODO: IND */
  2144. case 0x85: /* TODO: NEL */
  2145. case 0x88: /* TODO: HTS */
  2146. case 0x8d: /* TODO: RI */
  2147. case 0x8e: /* TODO: SS2 */
  2148. case 0x8f: /* TODO: SS3 */
  2149. case 0x90: /* TODO: DCS */
  2150. case 0x98: /* TODO: SOS */
  2151. case 0x9a: /* TODO: DECID */
  2152. case 0x9b: /* TODO: CSI */
  2153. case 0x9c: /* TODO: ST */
  2154. case 0x9d: /* TODO: OSC */
  2155. case 0x9e: /* TODO: PM */
  2156. case 0x9f: /* TODO: APC */
  2157. break;
  2158. default:
  2159. return 0;
  2160. }
  2161. term.esc &= ~(ESC_STR_END|ESC_STR);
  2162. return 1;
  2163. }
  2164. void
  2165. tdectest(char c) {
  2166. static char E[UTF_SIZ] = "E";
  2167. int x, y;
  2168. if(c == '8') { /* DEC screen alignment test. */
  2169. for(x = 0; x < term.col; ++x) {
  2170. for(y = 0; y < term.row; ++y)
  2171. tsetchar(E, &term.c.attr, x, y);
  2172. }
  2173. }
  2174. }
  2175. void
  2176. tputc(char *c, int len) {
  2177. uchar ascii;
  2178. bool control;
  2179. long unicodep;
  2180. int width;
  2181. Glyph *gp;
  2182. if(len == 1) {
  2183. width = 1;
  2184. unicodep = ascii = *c;
  2185. } else {
  2186. utf8decode(c, &unicodep, UTF_SIZ);
  2187. width = wcwidth(unicodep);
  2188. control = ISCONTROLC1(unicodep);
  2189. ascii = unicodep;
  2190. }
  2191. if(IS_SET(MODE_PRINT))
  2192. tprinter(c, len);
  2193. control = ISCONTROL(unicodep);
  2194. /*
  2195. * STR sequence must be checked before anything else
  2196. * because it uses all following characters until it
  2197. * receives a ESC, a SUB, a ST or any other C1 control
  2198. * character.
  2199. */
  2200. if(term.esc & ESC_STR) {
  2201. if(width == 1 &&
  2202. (ascii == '\a' || ascii == 030 ||
  2203. ascii == 032 || ascii == 033 ||
  2204. ISCONTROLC1(unicodep))) {
  2205. term.esc &= ~ESC_STR;
  2206. term.esc |= ESC_STR_END;
  2207. } else if(strescseq.len + len < sizeof(strescseq.buf) - 1) {
  2208. memmove(&strescseq.buf[strescseq.len], c, len);
  2209. strescseq.len += len;
  2210. return;
  2211. } else {
  2212. /*
  2213. * Here is a bug in terminals. If the user never sends
  2214. * some code to stop the str or esc command, then st
  2215. * will stop responding. But this is better than
  2216. * silently failing with unknown characters. At least
  2217. * then users will report back.
  2218. *
  2219. * In the case users ever get fixed, here is the code:
  2220. */
  2221. /*
  2222. * term.esc = 0;
  2223. * strhandle();
  2224. */
  2225. return;
  2226. }
  2227. }
  2228. /*
  2229. * Actions of control codes must be performed as soon they arrive
  2230. * because they can be embedded inside a control sequence, and
  2231. * they must not cause conflicts with sequences.
  2232. */
  2233. if(control) {
  2234. if (tcontrolcode(ascii))
  2235. return;
  2236. } else if(term.esc & ESC_START) {
  2237. if(term.esc & ESC_CSI) {
  2238. csiescseq.buf[csiescseq.len++] = ascii;
  2239. if(BETWEEN(ascii, 0x40, 0x7E)
  2240. || csiescseq.len >= \
  2241. sizeof(csiescseq.buf)-1) {
  2242. term.esc = 0;
  2243. csiparse();
  2244. csihandle();
  2245. }
  2246. return;
  2247. } else if(term.esc & ESC_ALTCHARSET) {
  2248. tdeftran(ascii);
  2249. tselcs();
  2250. } else if(term.esc & ESC_TEST) {
  2251. tdectest(ascii);
  2252. } else {
  2253. switch(ascii) {
  2254. case '[':
  2255. term.esc |= ESC_CSI;
  2256. return;
  2257. case '#':
  2258. term.esc |= ESC_TEST;
  2259. return;
  2260. case 'P': /* DCS -- Device Control String */
  2261. case '_': /* APC -- Application Program Command */
  2262. case '^': /* PM -- Privacy Message */
  2263. case ']': /* OSC -- Operating System Command */
  2264. case 'k': /* old title set compatibility */
  2265. strreset();
  2266. strescseq.type = ascii;
  2267. term.esc |= ESC_STR;
  2268. return;
  2269. case '(': /* set primary charset G0 */
  2270. case ')': /* set secondary charset G1 */
  2271. case '*': /* set tertiary charset G2 */
  2272. case '+': /* set quaternary charset G3 */
  2273. term.icharset = ascii - '(';
  2274. term.esc |= ESC_ALTCHARSET;
  2275. return;
  2276. case 'D': /* IND -- Linefeed */
  2277. if(term.c.y == term.bot) {
  2278. tscrollup(term.top, 1);
  2279. } else {
  2280. tmoveto(term.c.x, term.c.y+1);
  2281. }
  2282. break;
  2283. case 'E': /* NEL -- Next line */
  2284. tnewline(1); /* always go to first col */
  2285. break;
  2286. case 'H': /* HTS -- Horizontal tab stop */
  2287. term.tabs[term.c.x] = 1;
  2288. break;
  2289. case 'M': /* RI -- Reverse index */
  2290. if(term.c.y == term.top) {
  2291. tscrolldown(term.top, 1);
  2292. } else {
  2293. tmoveto(term.c.x, term.c.y-1);
  2294. }
  2295. break;
  2296. case 'Z': /* DECID -- Identify Terminal */
  2297. ttywrite(VT102ID, sizeof(VT102ID) - 1);
  2298. break;
  2299. case 'c': /* RIS -- Reset to inital state */
  2300. treset();
  2301. xresettitle();
  2302. xloadcols();
  2303. break;
  2304. case '=': /* DECPAM -- Application keypad */
  2305. term.mode |= MODE_APPKEYPAD;
  2306. break;
  2307. case '>': /* DECPNM -- Normal keypad */
  2308. term.mode &= ~MODE_APPKEYPAD;
  2309. break;
  2310. case '7': /* DECSC -- Save Cursor */
  2311. tcursor(CURSOR_SAVE);
  2312. break;
  2313. case '8': /* DECRC -- Restore Cursor */
  2314. tcursor(CURSOR_LOAD);
  2315. break;
  2316. case '\\': /* ST -- String Terminator */
  2317. if(term.esc & ESC_STR_END)
  2318. strhandle();
  2319. break;
  2320. default:
  2321. fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
  2322. (uchar) ascii, isprint(ascii)? ascii:'.');
  2323. break;
  2324. }
  2325. }
  2326. term.esc = 0;
  2327. /*
  2328. * All characters which form part of a sequence are not
  2329. * printed
  2330. */
  2331. return;
  2332. }
  2333. /*
  2334. * Display control codes only if we are in graphic mode
  2335. */
  2336. if(control && !(term.c.attr.mode & ATTR_GFX))
  2337. return;
  2338. if(sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
  2339. selclear(NULL);
  2340. gp = &term.line[term.c.y][term.c.x];
  2341. if(IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
  2342. gp->mode |= ATTR_WRAP;
  2343. tnewline(1);
  2344. }
  2345. if(IS_SET(MODE_INSERT) && term.c.x+1 < term.col)
  2346. memmove(gp+1, gp, (term.col - term.c.x - 1) * sizeof(Glyph));
  2347. if(term.c.x+width > term.col)
  2348. tnewline(1);
  2349. tsetchar(c, &term.c.attr, term.c.x, term.c.y);
  2350. if(width == 2) {
  2351. gp->mode |= ATTR_WIDE;
  2352. if(term.c.x+1 < term.col) {
  2353. gp[1].c[0] = '\0';
  2354. gp[1].mode = ATTR_WDUMMY;
  2355. }
  2356. }
  2357. if(term.c.x+width < term.col) {
  2358. tmoveto(term.c.x+width, term.c.y);
  2359. } else {
  2360. term.c.state |= CURSOR_WRAPNEXT;
  2361. }
  2362. }
  2363. int
  2364. tresize(int col, int row) {
  2365. int i;
  2366. int minrow = MIN(row, term.row);
  2367. int mincol = MIN(col, term.col);
  2368. int slide = term.c.y - row + 1;
  2369. bool *bp;
  2370. Line *orig;
  2371. if(col < 1 || row < 1)
  2372. return 0;
  2373. /* free unneeded rows */
  2374. i = 0;
  2375. if(slide > 0) {
  2376. /*
  2377. * slide screen to keep cursor where we expect it -
  2378. * tscrollup would work here, but we can optimize to
  2379. * memmove because we're freeing the earlier lines
  2380. */
  2381. for(/* i = 0 */; i < slide; i++) {
  2382. free(term.line[i]);
  2383. free(term.alt[i]);
  2384. }
  2385. memmove(term.line, term.line + slide, row * sizeof(Line));
  2386. memmove(term.alt, term.alt + slide, row * sizeof(Line));
  2387. }
  2388. for(i += row; i < term.row; i++) {
  2389. free(term.line[i]);
  2390. free(term.alt[i]);
  2391. }
  2392. /* resize to new height */
  2393. term.line = xrealloc(term.line, row * sizeof(Line));
  2394. term.alt = xrealloc(term.alt, row * sizeof(Line));
  2395. term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
  2396. term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
  2397. /* resize each row to new width, zero-pad if needed */
  2398. for(i = 0; i < minrow; i++) {
  2399. term.dirty[i] = 1;
  2400. term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
  2401. term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
  2402. }
  2403. /* allocate any new rows */
  2404. for(/* i == minrow */; i < row; i++) {
  2405. term.dirty[i] = 1;
  2406. term.line[i] = xmalloc(col * sizeof(Glyph));
  2407. term.alt[i] = xmalloc(col * sizeof(Glyph));
  2408. }
  2409. if(col > term.col) {
  2410. bp = term.tabs + term.col;
  2411. memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
  2412. while(--bp > term.tabs && !*bp)
  2413. /* nothing */ ;
  2414. for(bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
  2415. *bp = 1;
  2416. }
  2417. /* update terminal size */
  2418. term.col = col;
  2419. term.row = row;
  2420. /* reset scrolling region */
  2421. tsetscroll(0, row-1);
  2422. /* make use of the LIMIT in tmoveto */
  2423. tmoveto(term.c.x, term.c.y);
  2424. /* Clearing both screens */
  2425. orig = term.line;
  2426. do {
  2427. if(mincol < col && 0 < minrow) {
  2428. tclearregion(mincol, 0, col - 1, minrow - 1);
  2429. }
  2430. if(0 < col && minrow < row) {
  2431. tclearregion(0, minrow, col - 1, row - 1);
  2432. }
  2433. tcursor(CURSOR_SAVE);
  2434. tswapscreen();
  2435. tcursor(CURSOR_LOAD);
  2436. } while(orig != term.line);
  2437. return (slide > 0);
  2438. }
  2439. void
  2440. xresize(int col, int row) {
  2441. xw.tw = MAX(1, col * xw.cw);
  2442. xw.th = MAX(1, row * xw.ch);
  2443. XFreePixmap(xw.dpy, xw.buf);
  2444. xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
  2445. DefaultDepth(xw.dpy, xw.scr));
  2446. XftDrawChange(xw.draw, xw.buf);
  2447. xclear(0, 0, xw.w, xw.h);
  2448. }
  2449. static inline ushort
  2450. sixd_to_16bit(int x) {
  2451. return x == 0 ? 0 : 0x3737 + 0x2828 * x;
  2452. }
  2453. void
  2454. xloadcols(void) {
  2455. int i, r, g, b;
  2456. XRenderColor color = { .alpha = 0xffff };
  2457. static bool loaded;
  2458. Colour *cp;
  2459. if(loaded) {
  2460. for (cp = dc.col; cp < dc.col + LEN(dc.col); ++cp)
  2461. XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
  2462. }
  2463. /* load colors [0-15] colors and [256-LEN(colorname)[ (config.h) */
  2464. for(i = 0; i < LEN(colorname); i++) {
  2465. if(!colorname[i])
  2466. continue;
  2467. if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, colorname[i], &dc.col[i])) {
  2468. die("Could not allocate color '%s'\n", colorname[i]);
  2469. }
  2470. }
  2471. /* load colors [16-255] ; same colors as xterm */
  2472. for(i = 16, r = 0; r < 6; r++) {
  2473. for(g = 0; g < 6; g++) {
  2474. for(b = 0; b < 6; b++) {
  2475. color.red = sixd_to_16bit(r);
  2476. color.green = sixd_to_16bit(g);
  2477. color.blue = sixd_to_16bit(b);
  2478. if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &dc.col[i])) {
  2479. die("Could not allocate color %d\n", i);
  2480. }
  2481. i++;
  2482. }
  2483. }
  2484. }
  2485. for(r = 0; r < 24; r++, i++) {
  2486. color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
  2487. if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color,
  2488. &dc.col[i])) {
  2489. die("Could not allocate color %d\n", i);
  2490. }
  2491. }
  2492. loaded = true;
  2493. }
  2494. int
  2495. xsetcolorname(int x, const char *name) {
  2496. XRenderColor color = { .alpha = 0xffff };
  2497. Colour colour;
  2498. if(!BETWEEN(x, 0, LEN(colorname)))
  2499. return -1;
  2500. if(!name) {
  2501. if(BETWEEN(x, 16, 16 + 215)) {
  2502. int r = (x - 16) / 36, g = ((x - 16) % 36) / 6, b = (x - 16) % 6;
  2503. color.red = sixd_to_16bit(r);
  2504. color.green = sixd_to_16bit(g);
  2505. color.blue = sixd_to_16bit(b);
  2506. if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &colour))
  2507. return 0; /* something went wrong */
  2508. dc.col[x] = colour;
  2509. return 1;
  2510. } else if(BETWEEN(x, 16 + 216, 255)) {
  2511. color.red = color.green = color.blue = 0x0808 + 0x0a0a * (x - (16 + 216));
  2512. if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &colour))
  2513. return 0; /* something went wrong */
  2514. dc.col[x] = colour;
  2515. return 1;
  2516. } else {
  2517. name = colorname[x];
  2518. }
  2519. }
  2520. if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, &colour))
  2521. return 0;
  2522. dc.col[x] = colour;
  2523. return 1;
  2524. }
  2525. void
  2526. xtermclear(int col1, int row1, int col2, int row2) {
  2527. XftDrawRect(xw.draw,
  2528. &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
  2529. borderpx + col1 * xw.cw,
  2530. borderpx + row1 * xw.ch,
  2531. (col2-col1+1) * xw.cw,
  2532. (row2-row1+1) * xw.ch);
  2533. }
  2534. /*
  2535. * Absolute coordinates.
  2536. */
  2537. void
  2538. xclear(int x1, int y1, int x2, int y2) {
  2539. XftDrawRect(xw.draw,
  2540. &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
  2541. x1, y1, x2-x1, y2-y1);
  2542. }
  2543. void
  2544. xhints(void) {
  2545. XClassHint class = {opt_class ? opt_class : termname, termname};
  2546. XWMHints wm = {.flags = InputHint, .input = 1};
  2547. XSizeHints *sizeh = NULL;
  2548. sizeh = XAllocSizeHints();
  2549. sizeh->flags = PSize | PResizeInc | PBaseSize;
  2550. sizeh->height = xw.h;
  2551. sizeh->width = xw.w;
  2552. sizeh->height_inc = xw.ch;
  2553. sizeh->width_inc = xw.cw;
  2554. sizeh->base_height = 2 * borderpx;
  2555. sizeh->base_width = 2 * borderpx;
  2556. if(xw.isfixed == True) {
  2557. sizeh->flags |= PMaxSize | PMinSize;
  2558. sizeh->min_width = sizeh->max_width = xw.w;
  2559. sizeh->min_height = sizeh->max_height = xw.h;
  2560. }
  2561. if(xw.gm & (XValue|YValue)) {
  2562. sizeh->flags |= USPosition | PWinGravity;
  2563. sizeh->x = xw.l;
  2564. sizeh->y = xw.t;
  2565. sizeh->win_gravity = xgeommasktogravity(xw.gm);
  2566. }
  2567. XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
  2568. &class);
  2569. XFree(sizeh);
  2570. }
  2571. int
  2572. xgeommasktogravity(int mask) {
  2573. switch(mask & (XNegative|YNegative)) {
  2574. case 0:
  2575. return NorthWestGravity;
  2576. case XNegative:
  2577. return NorthEastGravity;
  2578. case YNegative:
  2579. return SouthWestGravity;
  2580. }
  2581. return SouthEastGravity;
  2582. }
  2583. int
  2584. xloadfont(Font *f, FcPattern *pattern) {
  2585. FcPattern *match;
  2586. FcResult result;
  2587. match = FcFontMatch(NULL, pattern, &result);
  2588. if(!match)
  2589. return 1;
  2590. if(!(f->match = XftFontOpenPattern(xw.dpy, match))) {
  2591. FcPatternDestroy(match);
  2592. return 1;
  2593. }
  2594. f->set = NULL;
  2595. f->pattern = FcPatternDuplicate(pattern);
  2596. f->ascent = f->match->ascent;
  2597. f->descent = f->match->descent;
  2598. f->lbearing = 0;
  2599. f->rbearing = f->match->max_advance_width;
  2600. f->height = f->ascent + f->descent;
  2601. f->width = f->lbearing + f->rbearing;
  2602. return 0;
  2603. }
  2604. void
  2605. xloadfonts(char *fontstr, double fontsize) {
  2606. FcPattern *pattern;
  2607. FcResult r_sz, r_psz;
  2608. double fontval;
  2609. if(fontstr[0] == '-') {
  2610. pattern = XftXlfdParse(fontstr, False, False);
  2611. } else {
  2612. pattern = FcNameParse((FcChar8 *)fontstr);
  2613. }
  2614. if(!pattern)
  2615. die("st: can't open font %s\n", fontstr);
  2616. if(fontsize > 0) {
  2617. FcPatternDel(pattern, FC_PIXEL_SIZE);
  2618. FcPatternDel(pattern, FC_SIZE);
  2619. FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
  2620. usedfontsize = fontsize;
  2621. } else {
  2622. r_psz = FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval);
  2623. r_sz = FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval);
  2624. if(r_psz == FcResultMatch) {
  2625. usedfontsize = fontval;
  2626. } else if(r_sz == FcResultMatch) {
  2627. usedfontsize = -1;
  2628. } else {
  2629. /*
  2630. * Default font size is 12, if none given. This is to
  2631. * have a known usedfontsize value.
  2632. */
  2633. FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
  2634. usedfontsize = 12;
  2635. }
  2636. }
  2637. FcConfigSubstitute(0, pattern, FcMatchPattern);
  2638. FcDefaultSubstitute(pattern);
  2639. if(xloadfont(&dc.font, pattern))
  2640. die("st: can't open font %s\n", fontstr);
  2641. if(usedfontsize < 0) {
  2642. FcPatternGetDouble(dc.font.match->pattern,
  2643. FC_PIXEL_SIZE, 0, &fontval);
  2644. usedfontsize = fontval;
  2645. }
  2646. /* Setting character width and height. */
  2647. xw.cw = CEIL(dc.font.width * cwscale);
  2648. xw.ch = CEIL(dc.font.height * chscale);
  2649. FcPatternDel(pattern, FC_SLANT);
  2650. FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
  2651. if(xloadfont(&dc.ifont, pattern))
  2652. die("st: can't open font %s\n", fontstr);
  2653. FcPatternDel(pattern, FC_WEIGHT);
  2654. FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
  2655. if(xloadfont(&dc.ibfont, pattern))
  2656. die("st: can't open font %s\n", fontstr);
  2657. FcPatternDel(pattern, FC_SLANT);
  2658. FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
  2659. if(xloadfont(&dc.bfont, pattern))
  2660. die("st: can't open font %s\n", fontstr);
  2661. FcPatternDestroy(pattern);
  2662. }
  2663. int
  2664. xloadfontset(Font *f) {
  2665. FcResult result;
  2666. if(!(f->set = FcFontSort(0, f->pattern, FcTrue, 0, &result)))
  2667. return 1;
  2668. return 0;
  2669. }
  2670. void
  2671. xunloadfont(Font *f) {
  2672. XftFontClose(xw.dpy, f->match);
  2673. FcPatternDestroy(f->pattern);
  2674. if(f->set)
  2675. FcFontSetDestroy(f->set);
  2676. }
  2677. void
  2678. xunloadfonts(void) {
  2679. int i;
  2680. /* Free the loaded fonts in the font cache. */
  2681. for(i = 0; i < frclen; i++) {
  2682. XftFontClose(xw.dpy, frc[i].font);
  2683. }
  2684. frclen = 0;
  2685. xunloadfont(&dc.font);
  2686. xunloadfont(&dc.bfont);
  2687. xunloadfont(&dc.ifont);
  2688. xunloadfont(&dc.ibfont);
  2689. }
  2690. void
  2691. xzoom(const Arg *arg) {
  2692. xunloadfonts();
  2693. xloadfonts(usedfont, usedfontsize + arg->i);
  2694. cresize(0, 0);
  2695. redraw(0);
  2696. }
  2697. void
  2698. xinit(void) {
  2699. XGCValues gcvalues;
  2700. Cursor cursor;
  2701. Window parent;
  2702. pid_t thispid = getpid();
  2703. if(!(xw.dpy = XOpenDisplay(NULL)))
  2704. die("Can't open display\n");
  2705. xw.scr = XDefaultScreen(xw.dpy);
  2706. xw.vis = XDefaultVisual(xw.dpy, xw.scr);
  2707. /* font */
  2708. if(!FcInit())
  2709. die("Could not init fontconfig.\n");
  2710. usedfont = (opt_font == NULL)? font : opt_font;
  2711. xloadfonts(usedfont, 0);
  2712. /* colors */
  2713. xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
  2714. xloadcols();
  2715. /* adjust fixed window geometry */
  2716. xw.w = 2 * borderpx + term.col * xw.cw;
  2717. xw.h = 2 * borderpx + term.row * xw.ch;
  2718. if(xw.gm & XNegative)
  2719. xw.l += DisplayWidth(xw.dpy, xw.scr) - xw.w - 2;
  2720. if(xw.gm & YNegative)
  2721. xw.t += DisplayWidth(xw.dpy, xw.scr) - xw.h - 2;
  2722. /* Events */
  2723. xw.attrs.background_pixel = dc.col[defaultbg].pixel;
  2724. xw.attrs.border_pixel = dc.col[defaultbg].pixel;
  2725. xw.attrs.bit_gravity = NorthWestGravity;
  2726. xw.attrs.event_mask = FocusChangeMask | KeyPressMask
  2727. | ExposureMask | VisibilityChangeMask | StructureNotifyMask
  2728. | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
  2729. xw.attrs.colormap = xw.cmap;
  2730. parent = opt_embed ? strtol(opt_embed, NULL, 0) : \
  2731. XRootWindow(xw.dpy, xw.scr);
  2732. xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
  2733. xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
  2734. xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
  2735. | CWEventMask | CWColormap, &xw.attrs);
  2736. memset(&gcvalues, 0, sizeof(gcvalues));
  2737. gcvalues.graphics_exposures = False;
  2738. dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
  2739. &gcvalues);
  2740. xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
  2741. DefaultDepth(xw.dpy, xw.scr));
  2742. XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
  2743. XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
  2744. /* Xft rendering context */
  2745. xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
  2746. /* input methods */
  2747. if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
  2748. XSetLocaleModifiers("@im=local");
  2749. if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
  2750. XSetLocaleModifiers("@im=");
  2751. if((xw.xim = XOpenIM(xw.dpy,
  2752. NULL, NULL, NULL)) == NULL) {
  2753. die("XOpenIM failed. Could not open input"
  2754. " device.\n");
  2755. }
  2756. }
  2757. }
  2758. xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
  2759. | XIMStatusNothing, XNClientWindow, xw.win,
  2760. XNFocusWindow, xw.win, NULL);
  2761. if(xw.xic == NULL)
  2762. die("XCreateIC failed. Could not obtain input method.\n");
  2763. /* white cursor, black outline */
  2764. cursor = XCreateFontCursor(xw.dpy, XC_xterm);
  2765. XDefineCursor(xw.dpy, xw.win, cursor);
  2766. XRecolorCursor(xw.dpy, cursor,
  2767. &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
  2768. &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
  2769. xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
  2770. xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
  2771. xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
  2772. XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
  2773. xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
  2774. XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
  2775. PropModeReplace, (uchar *)&thispid, 1);
  2776. xresettitle();
  2777. XMapWindow(xw.dpy, xw.win);
  2778. xhints();
  2779. XSync(xw.dpy, False);
  2780. }
  2781. void
  2782. xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
  2783. int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
  2784. width = charlen * xw.cw, xp, i;
  2785. int frcflags;
  2786. int u8fl, u8fblen, u8cblen, doesexist;
  2787. char *u8c, *u8fs;
  2788. long unicodep;
  2789. Font *font = &dc.font;
  2790. FcResult fcres;
  2791. FcPattern *fcpattern, *fontpattern;
  2792. FcFontSet *fcsets[] = { NULL };
  2793. FcCharSet *fccharset;
  2794. Colour *fg, *bg, *temp, revfg, revbg, truefg, truebg;
  2795. XRenderColor colfg, colbg;
  2796. XRectangle r;
  2797. int oneatatime;
  2798. frcflags = FRC_NORMAL;
  2799. if(base.mode & ATTR_ITALIC) {
  2800. if(base.fg == defaultfg)
  2801. base.fg = defaultitalic;
  2802. font = &dc.ifont;
  2803. frcflags = FRC_ITALIC;
  2804. } else if((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD)) {
  2805. if(base.fg == defaultfg)
  2806. base.fg = defaultitalic;
  2807. font = &dc.ibfont;
  2808. frcflags = FRC_ITALICBOLD;
  2809. } else if(base.mode & ATTR_UNDERLINE) {
  2810. if(base.fg == defaultfg)
  2811. base.fg = defaultunderline;
  2812. }
  2813. if(IS_TRUECOL(base.fg)) {
  2814. colfg.alpha = 0xffff;
  2815. colfg.red = TRUERED(base.fg);
  2816. colfg.green = TRUEGREEN(base.fg);
  2817. colfg.blue = TRUEBLUE(base.fg);
  2818. XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
  2819. fg = &truefg;
  2820. } else {
  2821. fg = &dc.col[base.fg];
  2822. }
  2823. if(IS_TRUECOL(base.bg)) {
  2824. colbg.alpha = 0xffff;
  2825. colbg.green = TRUEGREEN(base.bg);
  2826. colbg.red = TRUERED(base.bg);
  2827. colbg.blue = TRUEBLUE(base.bg);
  2828. XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
  2829. bg = &truebg;
  2830. } else {
  2831. bg = &dc.col[base.bg];
  2832. }
  2833. if(base.mode & ATTR_BOLD) {
  2834. if(BETWEEN(base.fg, 0, 7)) {
  2835. /* basic system colors */
  2836. fg = &dc.col[base.fg + 8];
  2837. } else if(BETWEEN(base.fg, 16, 195)) {
  2838. /* 256 colors */
  2839. fg = &dc.col[base.fg + 36];
  2840. } else if(BETWEEN(base.fg, 232, 251)) {
  2841. /* greyscale */
  2842. fg = &dc.col[base.fg + 4];
  2843. }
  2844. /*
  2845. * Those ranges will not be brightened:
  2846. * 8 - 15 bright system colors
  2847. * 196 - 231 highest 256 color cube
  2848. * 252 - 255 brightest colors in greyscale
  2849. */
  2850. font = &dc.bfont;
  2851. frcflags = FRC_BOLD;
  2852. }
  2853. if(IS_SET(MODE_REVERSE)) {
  2854. if(fg == &dc.col[defaultfg]) {
  2855. fg = &dc.col[defaultbg];
  2856. } else {
  2857. colfg.red = ~fg->color.red;
  2858. colfg.green = ~fg->color.green;
  2859. colfg.blue = ~fg->color.blue;
  2860. colfg.alpha = fg->color.alpha;
  2861. XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
  2862. &revfg);
  2863. fg = &revfg;
  2864. }
  2865. if(bg == &dc.col[defaultbg]) {
  2866. bg = &dc.col[defaultfg];
  2867. } else {
  2868. colbg.red = ~bg->color.red;
  2869. colbg.green = ~bg->color.green;
  2870. colbg.blue = ~bg->color.blue;
  2871. colbg.alpha = bg->color.alpha;
  2872. XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
  2873. &revbg);
  2874. bg = &revbg;
  2875. }
  2876. }
  2877. if(base.mode & ATTR_REVERSE) {
  2878. temp = fg;
  2879. fg = bg;
  2880. bg = temp;
  2881. }
  2882. if(base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
  2883. fg = bg;
  2884. /* Intelligent cleaning up of the borders. */
  2885. if(x == 0) {
  2886. xclear(0, (y == 0)? 0 : winy, borderpx,
  2887. winy + xw.ch + ((y >= term.row-1)? xw.h : 0));
  2888. }
  2889. if(x + charlen >= term.col) {
  2890. xclear(winx + width, (y == 0)? 0 : winy, xw.w,
  2891. ((y >= term.row-1)? xw.h : (winy + xw.ch)));
  2892. }
  2893. if(y == 0)
  2894. xclear(winx, 0, winx + width, borderpx);
  2895. if(y == term.row-1)
  2896. xclear(winx, winy + xw.ch, winx + width, xw.h);
  2897. /* Clean up the region we want to draw to. */
  2898. XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
  2899. /* Set the clip region because Xft is sometimes dirty. */
  2900. r.x = 0;
  2901. r.y = 0;
  2902. r.height = xw.ch;
  2903. r.width = width;
  2904. XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
  2905. for(xp = winx; bytelen > 0;) {
  2906. /*
  2907. * Search for the range in the to be printed string of glyphs
  2908. * that are in the main font. Then print that range. If
  2909. * some glyph is found that is not in the font, do the
  2910. * fallback dance.
  2911. */
  2912. u8fs = s;
  2913. u8fblen = 0;
  2914. u8fl = 0;
  2915. oneatatime = font->width != xw.cw;
  2916. for(;;) {
  2917. u8c = s;
  2918. u8cblen = utf8decode(s, &unicodep, UTF_SIZ);
  2919. s += u8cblen;
  2920. bytelen -= u8cblen;
  2921. doesexist = XftCharExists(xw.dpy, font->match, unicodep);
  2922. if(oneatatime || !doesexist || bytelen <= 0) {
  2923. if(oneatatime || bytelen <= 0) {
  2924. if(doesexist) {
  2925. u8fl++;
  2926. u8fblen += u8cblen;
  2927. }
  2928. }
  2929. if(u8fl > 0) {
  2930. XftDrawStringUtf8(xw.draw, fg,
  2931. font->match, xp,
  2932. winy + font->ascent,
  2933. (FcChar8 *)u8fs,
  2934. u8fblen);
  2935. xp += xw.cw * u8fl;
  2936. }
  2937. break;
  2938. }
  2939. u8fl++;
  2940. u8fblen += u8cblen;
  2941. }
  2942. if(doesexist) {
  2943. if(oneatatime)
  2944. continue;
  2945. break;
  2946. }
  2947. /* Search the font cache. */
  2948. for(i = 0; i < frclen; i++) {
  2949. if(XftCharExists(xw.dpy, frc[i].font, unicodep)
  2950. && frc[i].flags == frcflags) {
  2951. break;
  2952. }
  2953. }
  2954. /* Nothing was found. */
  2955. if(i >= frclen) {
  2956. if(!font->set)
  2957. xloadfontset(font);
  2958. fcsets[0] = font->set;
  2959. /*
  2960. * Nothing was found in the cache. Now use
  2961. * some dozen of Fontconfig calls to get the
  2962. * font for one single character.
  2963. *
  2964. * Xft and fontconfig are design failures.
  2965. */
  2966. fcpattern = FcPatternDuplicate(font->pattern);
  2967. fccharset = FcCharSetCreate();
  2968. FcCharSetAddChar(fccharset, unicodep);
  2969. FcPatternAddCharSet(fcpattern, FC_CHARSET,
  2970. fccharset);
  2971. FcPatternAddBool(fcpattern, FC_SCALABLE,
  2972. FcTrue);
  2973. FcConfigSubstitute(0, fcpattern,
  2974. FcMatchPattern);
  2975. FcDefaultSubstitute(fcpattern);
  2976. fontpattern = FcFontSetMatch(0, fcsets,
  2977. FcTrue, fcpattern, &fcres);
  2978. /*
  2979. * Overwrite or create the new cache entry.
  2980. */
  2981. if(frclen >= LEN(frc)) {
  2982. frclen = LEN(frc) - 1;
  2983. XftFontClose(xw.dpy, frc[frclen].font);
  2984. }
  2985. frc[frclen].font = XftFontOpenPattern(xw.dpy,
  2986. fontpattern);
  2987. frc[frclen].flags = frcflags;
  2988. i = frclen;
  2989. frclen++;
  2990. FcPatternDestroy(fcpattern);
  2991. FcCharSetDestroy(fccharset);
  2992. }
  2993. XftDrawStringUtf8(xw.draw, fg, frc[i].font,
  2994. xp, winy + frc[i].font->ascent,
  2995. (FcChar8 *)u8c, u8cblen);
  2996. xp += xw.cw * wcwidth(unicodep);
  2997. }
  2998. /*
  2999. * This is how the loop above actually should be. Why does the
  3000. * application have to care about font details?
  3001. *
  3002. * I have to repeat: Xft and Fontconfig are design failures.
  3003. */
  3004. /*
  3005. XftDrawStringUtf8(xw.draw, fg, font->set, winx,
  3006. winy + font->ascent, (FcChar8 *)s, bytelen);
  3007. */
  3008. if(base.mode & ATTR_UNDERLINE) {
  3009. XftDrawRect(xw.draw, fg, winx, winy + font->ascent + 1,
  3010. width, 1);
  3011. }
  3012. /* Reset clip to none. */
  3013. XftDrawSetClip(xw.draw, 0);
  3014. }
  3015. void
  3016. xdrawcursor(void) {
  3017. static int oldx = 0, oldy = 0;
  3018. int sl, width, curx;
  3019. Glyph g = {{' '}, ATTR_NULL, defaultbg, defaultcs};
  3020. LIMIT(oldx, 0, term.col-1);
  3021. LIMIT(oldy, 0, term.row-1);
  3022. curx = term.c.x;
  3023. /* adjust position if in dummy */
  3024. if(term.line[oldy][oldx].mode & ATTR_WDUMMY)
  3025. oldx--;
  3026. if(term.line[term.c.y][curx].mode & ATTR_WDUMMY)
  3027. curx--;
  3028. memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
  3029. /* remove the old cursor */
  3030. sl = utf8len(term.line[oldy][oldx].c);
  3031. width = (term.line[oldy][oldx].mode & ATTR_WIDE)? 2 : 1;
  3032. xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx,
  3033. oldy, width, sl);
  3034. /* draw the new one */
  3035. if(!(IS_SET(MODE_HIDE))) {
  3036. if(xw.state & WIN_FOCUSED) {
  3037. if(IS_SET(MODE_REVERSE)) {
  3038. g.mode |= ATTR_REVERSE;
  3039. g.fg = defaultcs;
  3040. g.bg = defaultfg;
  3041. }
  3042. sl = utf8len(g.c);
  3043. width = (term.line[term.c.y][curx].mode & ATTR_WIDE)\
  3044. ? 2 : 1;
  3045. xdraws(g.c, g, term.c.x, term.c.y, width, sl);
  3046. } else {
  3047. XftDrawRect(xw.draw, &dc.col[defaultcs],
  3048. borderpx + curx * xw.cw,
  3049. borderpx + term.c.y * xw.ch,
  3050. xw.cw - 1, 1);
  3051. XftDrawRect(xw.draw, &dc.col[defaultcs],
  3052. borderpx + curx * xw.cw,
  3053. borderpx + term.c.y * xw.ch,
  3054. 1, xw.ch - 1);
  3055. XftDrawRect(xw.draw, &dc.col[defaultcs],
  3056. borderpx + (curx + 1) * xw.cw - 1,
  3057. borderpx + term.c.y * xw.ch,
  3058. 1, xw.ch - 1);
  3059. XftDrawRect(xw.draw, &dc.col[defaultcs],
  3060. borderpx + curx * xw.cw,
  3061. borderpx + (term.c.y + 1) * xw.ch - 1,
  3062. xw.cw, 1);
  3063. }
  3064. oldx = curx, oldy = term.c.y;
  3065. }
  3066. }
  3067. void
  3068. xsettitle(char *p) {
  3069. XTextProperty prop;
  3070. Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
  3071. &prop);
  3072. XSetWMName(xw.dpy, xw.win, &prop);
  3073. XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
  3074. XFree(prop.value);
  3075. }
  3076. void
  3077. xresettitle(void) {
  3078. xsettitle(opt_title ? opt_title : "st");
  3079. }
  3080. void
  3081. redraw(int timeout) {
  3082. struct timespec tv = {0, timeout * 1000};
  3083. draw();
  3084. if(timeout > 0) {
  3085. nanosleep(&tv, NULL);
  3086. XSync(xw.dpy, False); /* necessary for a good tput flash */
  3087. }
  3088. }
  3089. void
  3090. draw(void) {
  3091. drawregion(0, 0, term.col, term.row);
  3092. XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w,
  3093. xw.h, 0, 0);
  3094. XSetForeground(xw.dpy, dc.gc,
  3095. dc.col[IS_SET(MODE_REVERSE)?
  3096. defaultfg : defaultbg].pixel);
  3097. }
  3098. void
  3099. drawregion(int x1, int y1, int x2, int y2) {
  3100. int ic, ib, x, y, ox, sl;
  3101. Glyph base, new;
  3102. char buf[DRAW_BUF_SIZ];
  3103. bool ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
  3104. long unicodep;
  3105. if(!(xw.state & WIN_VISIBLE))
  3106. return;
  3107. for(y = y1; y < y2; y++) {
  3108. if(!term.dirty[y])
  3109. continue;
  3110. xtermclear(0, y, term.col, y);
  3111. term.dirty[y] = 0;
  3112. base = term.line[y][0];
  3113. ic = ib = ox = 0;
  3114. for(x = x1; x < x2; x++) {
  3115. new = term.line[y][x];
  3116. if(new.mode == ATTR_WDUMMY)
  3117. continue;
  3118. if(ena_sel && selected(x, y))
  3119. new.mode ^= ATTR_REVERSE;
  3120. if(ib > 0 && (ATTRCMP(base, new)
  3121. || ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
  3122. xdraws(buf, base, ox, y, ic, ib);
  3123. ic = ib = 0;
  3124. }
  3125. if(ib == 0) {
  3126. ox = x;
  3127. base = new;
  3128. }
  3129. sl = utf8decode(new.c, &unicodep, UTF_SIZ);
  3130. memcpy(buf+ib, new.c, sl);
  3131. ib += sl;
  3132. ic += (new.mode & ATTR_WIDE)? 2 : 1;
  3133. }
  3134. if(ib > 0)
  3135. xdraws(buf, base, ox, y, ic, ib);
  3136. }
  3137. xdrawcursor();
  3138. }
  3139. void
  3140. expose(XEvent *ev) {
  3141. XExposeEvent *e = &ev->xexpose;
  3142. if(xw.state & WIN_REDRAW) {
  3143. if(!e->count)
  3144. xw.state &= ~WIN_REDRAW;
  3145. }
  3146. redraw(0);
  3147. }
  3148. void
  3149. visibility(XEvent *ev) {
  3150. XVisibilityEvent *e = &ev->xvisibility;
  3151. if(e->state == VisibilityFullyObscured) {
  3152. xw.state &= ~WIN_VISIBLE;
  3153. } else if(!(xw.state & WIN_VISIBLE)) {
  3154. /* need a full redraw for next Expose, not just a buf copy */
  3155. xw.state |= WIN_VISIBLE | WIN_REDRAW;
  3156. }
  3157. }
  3158. void
  3159. unmap(XEvent *ev) {
  3160. xw.state &= ~WIN_VISIBLE;
  3161. }
  3162. void
  3163. xsetpointermotion(int set) {
  3164. MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
  3165. XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
  3166. }
  3167. void
  3168. xseturgency(int add) {
  3169. XWMHints *h = XGetWMHints(xw.dpy, xw.win);
  3170. MODBIT(h->flags, add, XUrgencyHint);
  3171. XSetWMHints(xw.dpy, xw.win, h);
  3172. XFree(h);
  3173. }
  3174. void
  3175. focus(XEvent *ev) {
  3176. XFocusChangeEvent *e = &ev->xfocus;
  3177. if(e->mode == NotifyGrab)
  3178. return;
  3179. if(ev->type == FocusIn) {
  3180. XSetICFocus(xw.xic);
  3181. xw.state |= WIN_FOCUSED;
  3182. xseturgency(0);
  3183. if(IS_SET(MODE_FOCUS))
  3184. ttywrite("\033[I", 3);
  3185. } else {
  3186. XUnsetICFocus(xw.xic);
  3187. xw.state &= ~WIN_FOCUSED;
  3188. if(IS_SET(MODE_FOCUS))
  3189. ttywrite("\033[O", 3);
  3190. }
  3191. }
  3192. static inline bool
  3193. match(uint mask, uint state) {
  3194. return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
  3195. }
  3196. void
  3197. numlock(const Arg *dummy) {
  3198. term.numlock ^= 1;
  3199. }
  3200. char*
  3201. kmap(KeySym k, uint state) {
  3202. Key *kp;
  3203. int i;
  3204. /* Check for mapped keys out of X11 function keys. */
  3205. for(i = 0; i < LEN(mappedkeys); i++) {
  3206. if(mappedkeys[i] == k)
  3207. break;
  3208. }
  3209. if(i == LEN(mappedkeys)) {
  3210. if((k & 0xFFFF) < 0xFD00)
  3211. return NULL;
  3212. }
  3213. for(kp = key; kp < key + LEN(key); kp++) {
  3214. if(kp->k != k)
  3215. continue;
  3216. if(!match(kp->mask, state))
  3217. continue;
  3218. if(IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
  3219. continue;
  3220. if(term.numlock && kp->appkey == 2)
  3221. continue;
  3222. if(IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
  3223. continue;
  3224. if(IS_SET(MODE_CRLF) ? kp->crlf < 0 : kp->crlf > 0)
  3225. continue;
  3226. return kp->s;
  3227. }
  3228. return NULL;
  3229. }
  3230. void
  3231. kpress(XEvent *ev) {
  3232. XKeyEvent *e = &ev->xkey;
  3233. KeySym ksym;
  3234. char buf[32], *customkey;
  3235. int len;
  3236. long c;
  3237. Status status;
  3238. Shortcut *bp;
  3239. if(IS_SET(MODE_KBDLOCK))
  3240. return;
  3241. len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
  3242. /* 1. shortcuts */
  3243. for(bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
  3244. if(ksym == bp->keysym && match(bp->mod, e->state)) {
  3245. bp->func(&(bp->arg));
  3246. return;
  3247. }
  3248. }
  3249. /* 2. custom keys from config.h */
  3250. if((customkey = kmap(ksym, e->state))) {
  3251. ttysend(customkey, strlen(customkey));
  3252. return;
  3253. }
  3254. /* 3. composed string from input method */
  3255. if(len == 0)
  3256. return;
  3257. if(len == 1 && e->state & Mod1Mask) {
  3258. if(IS_SET(MODE_8BIT)) {
  3259. if(*buf < 0177) {
  3260. c = *buf | 0x80;
  3261. len = utf8encode(c, buf, UTF_SIZ);
  3262. }
  3263. } else {
  3264. buf[1] = buf[0];
  3265. buf[0] = '\033';
  3266. len = 2;
  3267. }
  3268. }
  3269. ttysend(buf, len);
  3270. }
  3271. void
  3272. cmessage(XEvent *e) {
  3273. /*
  3274. * See xembed specs
  3275. * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
  3276. */
  3277. if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
  3278. if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
  3279. xw.state |= WIN_FOCUSED;
  3280. xseturgency(0);
  3281. } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
  3282. xw.state &= ~WIN_FOCUSED;
  3283. }
  3284. } else if(e->xclient.data.l[0] == xw.wmdeletewin) {
  3285. /* Send SIGHUP to shell */
  3286. kill(pid, SIGHUP);
  3287. exit(EXIT_SUCCESS);
  3288. }
  3289. }
  3290. void
  3291. cresize(int width, int height) {
  3292. int col, row;
  3293. if(width != 0)
  3294. xw.w = width;
  3295. if(height != 0)
  3296. xw.h = height;
  3297. col = (xw.w - 2 * borderpx) / xw.cw;
  3298. row = (xw.h - 2 * borderpx) / xw.ch;
  3299. tresize(col, row);
  3300. xresize(col, row);
  3301. ttyresize();
  3302. }
  3303. void
  3304. resize(XEvent *e) {
  3305. if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
  3306. return;
  3307. cresize(e->xconfigure.width, e->xconfigure.height);
  3308. }
  3309. void
  3310. run(void) {
  3311. XEvent ev;
  3312. int w = xw.w, h = xw.h;
  3313. fd_set rfd;
  3314. int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
  3315. struct timeval drawtimeout, *tv = NULL, now, last, lastblink;
  3316. /* Waiting for window mapping */
  3317. while(1) {
  3318. XNextEvent(xw.dpy, &ev);
  3319. if(ev.type == ConfigureNotify) {
  3320. w = ev.xconfigure.width;
  3321. h = ev.xconfigure.height;
  3322. } else if(ev.type == MapNotify) {
  3323. break;
  3324. }
  3325. }
  3326. ttynew();
  3327. cresize(w, h);
  3328. gettimeofday(&last, NULL);
  3329. lastblink = last;
  3330. for(xev = actionfps;;) {
  3331. long deltatime;
  3332. FD_ZERO(&rfd);
  3333. FD_SET(cmdfd, &rfd);
  3334. FD_SET(xfd, &rfd);
  3335. if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv) < 0) {
  3336. if(errno == EINTR)
  3337. continue;
  3338. die("select failed: %s\n", strerror(errno));
  3339. }
  3340. if(FD_ISSET(cmdfd, &rfd)) {
  3341. ttyread();
  3342. if(blinktimeout) {
  3343. blinkset = tattrset(ATTR_BLINK);
  3344. if(!blinkset)
  3345. MODBIT(term.mode, 0, MODE_BLINK);
  3346. }
  3347. }
  3348. if(FD_ISSET(xfd, &rfd))
  3349. xev = actionfps;
  3350. gettimeofday(&now, NULL);
  3351. drawtimeout.tv_sec = 0;
  3352. drawtimeout.tv_usec = (1000/xfps) * 1000;
  3353. tv = &drawtimeout;
  3354. dodraw = 0;
  3355. if(blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
  3356. tsetdirtattr(ATTR_BLINK);
  3357. term.mode ^= MODE_BLINK;
  3358. lastblink = now;
  3359. dodraw = 1;
  3360. }
  3361. deltatime = TIMEDIFF(now, last);
  3362. if(deltatime > (xev? (1000/xfps) : (1000/actionfps))
  3363. || deltatime < 0) {
  3364. dodraw = 1;
  3365. last = now;
  3366. }
  3367. if(dodraw) {
  3368. while(XPending(xw.dpy)) {
  3369. XNextEvent(xw.dpy, &ev);
  3370. if(XFilterEvent(&ev, None))
  3371. continue;
  3372. if(handler[ev.type])
  3373. (handler[ev.type])(&ev);
  3374. }
  3375. draw();
  3376. XFlush(xw.dpy);
  3377. if(xev && !FD_ISSET(xfd, &rfd))
  3378. xev--;
  3379. if(!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
  3380. if(blinkset) {
  3381. if(TIMEDIFF(now, lastblink) \
  3382. > blinktimeout) {
  3383. drawtimeout.tv_usec = 1;
  3384. } else {
  3385. drawtimeout.tv_usec = (1000 * \
  3386. (blinktimeout - \
  3387. TIMEDIFF(now,
  3388. lastblink)));
  3389. }
  3390. } else {
  3391. tv = NULL;
  3392. }
  3393. }
  3394. }
  3395. }
  3396. }
  3397. void
  3398. usage(void) {
  3399. die("%s " VERSION " (c) 2010-2014 st engineers\n" \
  3400. "usage: st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]" \
  3401. " [-t title] [-w windowid] [-e command ...]\n", argv0);
  3402. }
  3403. int
  3404. main(int argc, char *argv[]) {
  3405. char *titles;
  3406. uint cols = 80, rows = 24;
  3407. xw.l = xw.t = 0;
  3408. xw.isfixed = False;
  3409. ARGBEGIN {
  3410. case 'a':
  3411. allowaltscreen = false;
  3412. break;
  3413. case 'c':
  3414. opt_class = EARGF(usage());
  3415. break;
  3416. case 'e':
  3417. /* eat all remaining arguments */
  3418. if(argc > 1) {
  3419. opt_cmd = &argv[1];
  3420. if(argv[1] != NULL && opt_title == NULL) {
  3421. titles = xstrdup(argv[1]);
  3422. opt_title = basename(titles);
  3423. }
  3424. }
  3425. goto run;
  3426. case 'f':
  3427. opt_font = EARGF(usage());
  3428. break;
  3429. case 'g':
  3430. xw.gm = XParseGeometry(EARGF(usage()),
  3431. &xw.l, &xw.t, &cols, &rows);
  3432. break;
  3433. case 'i':
  3434. xw.isfixed = True;
  3435. break;
  3436. case 'o':
  3437. opt_io = EARGF(usage());
  3438. break;
  3439. case 't':
  3440. opt_title = EARGF(usage());
  3441. break;
  3442. case 'w':
  3443. opt_embed = EARGF(usage());
  3444. break;
  3445. case 'v':
  3446. default:
  3447. usage();
  3448. } ARGEND;
  3449. run:
  3450. setlocale(LC_CTYPE, "");
  3451. XSetLocaleModifiers("");
  3452. tnew(cols? cols : 1, rows? rows : 1);
  3453. xinit();
  3454. selinit();
  3455. run();
  3456. return 0;
  3457. }