1 /* See LICENSE for licence details. */
14 #include <sys/ioctl.h>
15 #include <sys/select.h>
18 #include <sys/types.h>
22 #include <X11/Xatom.h>
24 #include <X11/Xutil.h>
25 #include <X11/cursorfont.h>
26 #include <X11/keysym.h>
27 #include <X11/Xft/Xft.h>
28 #include <fontconfig/fontconfig.h>
36 #define Draw XftDraw *
37 #define Colour XftColor
38 #define Colourmap Colormap
39 #define Rectangle XRectangle
43 #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
45 #elif defined(__FreeBSD__) || defined(__DragonFly__)
51 #define XEMBED_FOCUS_IN 4
52 #define XEMBED_FOCUS_OUT 5
56 #define ESC_BUF_SIZ (128*UTF_SIZ)
57 #define ESC_ARG_SIZ 16
58 #define STR_BUF_SIZ ESC_BUF_SIZ
59 #define STR_ARG_SIZ ESC_ARG_SIZ
60 #define DRAW_BUF_SIZ 20*1024
61 #define XK_ANY_MOD UINT_MAX
63 #define XK_SWITCH_MOD (1<<13)
65 #define REDRAW_TIMEOUT (80*1000) /* 80 ms */
68 #define SERRNO strerror(errno)
69 #define MIN(a, b) ((a) < (b) ? (a) : (b))
70 #define MAX(a, b) ((a) < (b) ? (b) : (a))
71 #define LEN(a) (sizeof(a) / sizeof(a[0]))
72 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
73 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
74 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
75 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
76 #define IS_SET(flag) ((term.mode & (flag)) != 0)
77 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000)
79 #define VT102ID "\033[?6c"
81 enum glyph_attribute {
92 enum cursor_movement {
110 MODE_MOUSEMOTION = 64,
116 MODE_APPCURSOR = 2048,
117 MODE_MOUSESGR = 4096,
126 ESC_STR = 4, /* DSC, OSC, PM, APC */
128 ESC_STR_END = 16, /* a final string was encountered */
129 ESC_TEST = 32, /* Enter in test mode */
138 enum selection_type {
143 enum selection_snap {
150 enum { B0=1, B1=2, B2=4, B3=8, B4=16, B5=32, B6=64, B7=128 };
152 typedef unsigned char uchar;
153 typedef unsigned int uint;
154 typedef unsigned long ulong;
155 typedef unsigned short ushort;
158 char c[UTF_SIZ]; /* character code */
159 uchar mode; /* attribute flags */
160 ushort fg; /* foreground */
161 ushort bg; /* background */
167 Glyph attr; /* current char attributes */
173 /* CSI Escape sequence structs */
174 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
176 char buf[ESC_BUF_SIZ]; /* raw string */
177 int len; /* raw string length */
179 int arg[ESC_ARG_SIZ];
180 int narg; /* nb of args */
184 /* STR Escape sequence structs */
185 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
187 char type; /* ESC type ... */
188 char buf[STR_BUF_SIZ]; /* raw string */
189 int len; /* raw string length */
190 char *args[STR_ARG_SIZ];
191 int narg; /* nb of args */
194 /* Internal representation of the screen */
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 bool numlock; /* lock numbers in keyboard */
210 /* Purely graphic info */
216 Atom xembed, wmdeletewin;
222 bool isfixed; /* is fixed geometry? */
223 int fx, fy, fw, fh; /* fixed geometry */
224 int tw, th; /* tty width and height */
225 int w, h; /* window width and height */
226 int ch; /* char height */
227 int cw; /* char width */
228 char state; /* focus, redraw, visible */
241 /* three valued logic variables: 0 indifferent, 1 on, -1 off */
242 signed char appkey; /* application keypad */
243 signed char appcursor; /* application cursor */
244 signed char crlf; /* crlf mode */
247 /* TODO: use better name for vars... */
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
266 struct timeval tclick1;
267 struct timeval tclick2;
280 void (*func)(const Arg *);
284 /* function definitions used in config.h */
285 static void clippaste(const Arg *);
286 static void numlock(const Arg *);
287 static void selpaste(const Arg *);
288 static void xzoom(const Arg *);
290 /* Config.h for applying patches and the configuration. */
306 /* Drawing Context */
308 Colour col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
309 Font font, bfont, ifont, ibfont;
313 static void die(const char *, ...);
314 static void draw(void);
315 static void redraw(int);
316 static void drawregion(int, int, int, int);
317 static void execsh(void);
318 static void sigchld(int);
319 static void run(void);
321 static void csidump(void);
322 static void csihandle(void);
323 static void csiparse(void);
324 static void csireset(void);
325 static void strdump(void);
326 static void strhandle(void);
327 static void strparse(void);
328 static void strreset(void);
330 static int tattrset(int);
331 static void tclearregion(int, int, int, int);
332 static void tcursor(int);
333 static void tdeletechar(int);
334 static void tdeleteline(int);
335 static void tinsertblank(int);
336 static void tinsertblankline(int);
337 static void tmoveto(int, int);
338 static void tmoveato(int x, int y);
339 static void tnew(int, int);
340 static void tnewline(int);
341 static void tputtab(bool);
342 static void tputc(char *, int);
343 static void treset(void);
344 static int tresize(int, int);
345 static void tscrollup(int, int);
346 static void tscrolldown(int, int);
347 static void tsetattr(int*, int);
348 static void tsetchar(char *, Glyph *, int, int);
349 static void tsetscroll(int, int);
350 static void tswapscreen(void);
351 static void tsetdirt(int, int);
352 static void tsetdirtattr(int);
353 static void tsetmode(bool, bool, int *, int);
354 static void tfulldirt(void);
355 static void techo(char *, int);
357 static inline bool match(uint, uint);
358 static void ttynew(void);
359 static void ttyread(void);
360 static void ttyresize(void);
361 static void ttywrite(const char *, size_t);
363 static void xdraws(char *, Glyph, int, int, int, int);
364 static void xhints(void);
365 static void xclear(int, int, int, int);
366 static void xdrawcursor(void);
367 static void xinit(void);
368 static void xloadcols(void);
369 static int xsetcolorname(int, const char *);
370 static int xloadfont(Font *, FcPattern *);
371 static void xloadfonts(char *, int);
372 static int xloadfontset(Font *);
373 static void xsettitle(char *);
374 static void xresettitle(void);
375 static void xseturgency(int);
376 static void xsetsel(char*);
377 static void xtermclear(int, int, int, int);
378 static void xunloadfont(Font *f);
379 static void xunloadfonts(void);
380 static void xresize(int, int);
382 static void expose(XEvent *);
383 static void visibility(XEvent *);
384 static void unmap(XEvent *);
385 static char *kmap(KeySym, uint);
386 static void kpress(XEvent *);
387 static void cmessage(XEvent *);
388 static void cresize(int, int);
389 static void resize(XEvent *);
390 static void focus(XEvent *);
391 static void brelease(XEvent *);
392 static void bpress(XEvent *);
393 static void bmotion(XEvent *);
394 static void selnotify(XEvent *);
395 static void selclear(XEvent *);
396 static void selrequest(XEvent *);
398 static void selinit(void);
399 static void selsort(void);
400 static inline bool selected(int, int);
401 static void selcopy(void);
402 static void selscroll(int, int);
403 static void selsnap(int, int *, int *, int);
405 static int utf8decode(char *, long *);
406 static int utf8encode(long *, char *);
407 static int utf8size(char *);
408 static int isfullutf8(char *, int);
410 static ssize_t xwrite(int, char *, size_t);
411 static void *xmalloc(size_t);
412 static void *xrealloc(void *, size_t);
413 static void *xcalloc(size_t, size_t);
415 static void (*handler[LASTEvent])(XEvent *) = {
417 [ClientMessage] = cmessage,
418 [ConfigureNotify] = resize,
419 [VisibilityNotify] = visibility,
420 [UnmapNotify] = unmap,
424 [MotionNotify] = bmotion,
425 [ButtonPress] = bpress,
426 [ButtonRelease] = brelease,
427 [SelectionClear] = selclear,
428 [SelectionNotify] = selnotify,
429 [SelectionRequest] = selrequest,
436 static CSIEscape csiescseq;
437 static STREscape strescseq;
440 static Selection sel;
441 static int iofd = -1;
442 static char **opt_cmd = NULL;
443 static char *opt_io = NULL;
444 static char *opt_title = NULL;
445 static char *opt_embed = NULL;
446 static char *opt_class = NULL;
447 static char *opt_font = NULL;
449 static char *usedfont = NULL;
450 static int usedfontsize = 0;
452 /* Font Ring Cache */
467 * Fontcache is a ring buffer, with frccur as current position and frclen as
468 * the current length of used elements.
471 static Fontcache frc[1024];
472 static int frccur = -1, frclen = 0;
475 xwrite(int fd, char *s, size_t len) {
479 ssize_t r = write(fd, s, len);
489 xmalloc(size_t len) {
490 void *p = malloc(len);
493 die("Out of memory\n");
499 xrealloc(void *p, size_t len) {
500 if((p = realloc(p, len)) == NULL)
501 die("Out of memory\n");
507 xcalloc(size_t nmemb, size_t size) {
508 void *p = calloc(nmemb, size);
511 die("Out of memory\n");
517 utf8decode(char *s, long *u) {
523 if(~c & B7) { /* 0xxxxxxx */
526 } else if((c & (B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */
527 *u = c&(B4|B3|B2|B1|B0);
529 } else if((c & (B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */
530 *u = c&(B3|B2|B1|B0);
532 } else if((c & (B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */
539 for(i = n, ++s; i > 0; --i, ++rtn, ++s) {
541 if((c & (B7|B6)) != B7) /* 10xxxxxx */
544 *u |= c & (B5|B4|B3|B2|B1|B0);
547 if((n == 1 && *u < 0x80) ||
548 (n == 2 && *u < 0x800) ||
549 (n == 3 && *u < 0x10000) ||
550 (*u >= 0xD800 && *u <= 0xDFFF)) {
562 utf8encode(long *u, char *s) {
570 *sp = uc; /* 0xxxxxxx */
572 } else if(*u < 0x800) {
573 *sp = (uc >> 6) | (B7|B6); /* 110xxxxx */
575 } else if(uc < 0x10000) {
576 *sp = (uc >> 12) | (B7|B6|B5); /* 1110xxxx */
578 } else if(uc <= 0x10FFFF) {
579 *sp = (uc >> 18) | (B7|B6|B5|B4); /* 11110xxx */
585 for(i=n,++sp; i>0; --i,++sp)
586 *sp = ((uc >> 6*(i-1)) & (B5|B4|B3|B2|B1|B0)) | B7; /* 10xxxxxx */
598 /* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode
599 UTF-8 otherwise return 0 */
601 isfullutf8(char *s, int b) {
609 } else if((*c1&(B7|B6|B5)) == (B7|B6) && b == 1) {
611 } else if((*c1&(B7|B6|B5|B4)) == (B7|B6|B5) &&
613 ((b == 2) && (*c2&(B7|B6)) == B7))) {
615 } else if((*c1&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4) &&
617 ((b == 2) && (*c2&(B7|B6)) == B7) ||
618 ((b == 3) && (*c2&(B7|B6)) == B7 && (*c3&(B7|B6)) == B7))) {
631 } else if((c&(B7|B6|B5)) == (B7|B6)) {
633 } else if((c&(B7|B6|B5|B4)) == (B7|B6|B5)) {
642 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
643 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
647 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
648 if(sel.xtarget == None)
649 sel.xtarget = XA_STRING;
657 return LIMIT(x, 0, term.col-1);
665 return LIMIT(y, 0, term.row-1);
670 if(sel.ob.y == sel.oe.y) {
671 sel.nb.x = MIN(sel.ob.x, sel.oe.x);
672 sel.ne.x = MAX(sel.ob.x, sel.oe.x);
674 sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
675 sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
677 sel.nb.y = MIN(sel.ob.y, sel.oe.y);
678 sel.ne.y = MAX(sel.ob.y, sel.oe.y);
682 selected(int x, int y) {
683 if(sel.ne.y == y && sel.nb.y == y)
684 return BETWEEN(x, sel.nb.x, sel.ne.x);
686 if(sel.type == SEL_RECTANGULAR) {
687 return ((sel.nb.y <= y && y <= sel.ne.y)
688 && (sel.nb.x <= x && x <= sel.ne.x));
691 return ((sel.nb.y < y && y < sel.ne.y)
692 || (y == sel.ne.y && x <= sel.ne.x))
693 || (y == sel.nb.y && x >= sel.nb.x
694 && (x <= sel.ne.x || sel.nb.y != sel.ne.y));
698 selsnap(int mode, int *x, int *y, int direction) {
704 * Snap around if the word wraps around at the end or
705 * beginning of a line.
708 if(direction < 0 && *x <= 0) {
709 if(*y > 0 && term.line[*y - 1][term.col-1].mode
717 if(direction > 0 && *x >= term.col-1) {
718 if(*y < term.row-1 && term.line[*y][*x].mode
727 if(strchr(worddelimiters,
728 term.line[*y][*x + direction].c[0])) {
737 * Snap around if the the previous line or the current one
738 * has set ATTR_WRAP at its end. Then the whole next or
739 * previous line will be selected.
741 *x = (direction < 0) ? 0 : term.col - 1;
742 if(direction < 0 && *y > 0) {
743 for(; *y > 0; *y += direction) {
744 if(!(term.line[*y-1][term.col-1].mode
749 } else if(direction > 0 && *y < term.row-1) {
750 for(; *y < term.row; *y += direction) {
751 if(!(term.line[*y][term.col-1].mode
760 * Select the whole line when the end of line is reached.
764 while(--i > 0 && term.line[*y][i].c[0] == ' ')
774 getbuttoninfo(XEvent *e) {
776 uint state = e->xbutton.state &~Button1Mask;
778 sel.alt = IS_SET(MODE_ALTSCREEN);
780 sel.oe.x = x2col(e->xbutton.x);
781 sel.oe.y = y2row(e->xbutton.y);
783 if(sel.ob.y < sel.oe.y
784 || (sel.ob.y == sel.oe.y && sel.ob.x < sel.oe.x)) {
785 selsnap(sel.snap, &sel.ob.x, &sel.ob.y, -1);
786 selsnap(sel.snap, &sel.oe.x, &sel.oe.y, +1);
788 selsnap(sel.snap, &sel.oe.x, &sel.oe.y, -1);
789 selsnap(sel.snap, &sel.ob.x, &sel.ob.y, +1);
793 sel.type = SEL_REGULAR;
794 for(type = 1; type < LEN(selmasks); ++type) {
795 if(match(selmasks[type], state)) {
803 mousereport(XEvent *e) {
804 int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
805 button = e->xbutton.button, state = e->xbutton.state,
808 static int ob, ox, oy;
811 if(e->xbutton.type == MotionNotify) {
812 if(!IS_SET(MODE_MOUSEMOTION) || (x == ox && y == oy))
817 } else if(!IS_SET(MODE_MOUSESGR)
818 && (e->xbutton.type == ButtonRelease
819 || button == AnyButton)) {
825 if(e->xbutton.type == ButtonPress) {
832 button += (state & ShiftMask ? 4 : 0)
833 + (state & Mod4Mask ? 8 : 0)
834 + (state & ControlMask ? 16 : 0);
837 if(IS_SET(MODE_MOUSESGR)) {
838 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
840 e->xbutton.type == ButtonRelease ? 'm' : 'M');
841 } else if(x < 223 && y < 223) {
842 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
843 32+button, 32+x+1, 32+y+1);
856 if(IS_SET(MODE_MOUSE)) {
861 for(mk = mshortcuts; mk < mshortcuts + LEN(mshortcuts); mk++) {
862 if(e->xbutton.button == mk->b
863 && match(mk->mask, e->xbutton.state)) {
864 ttywrite(mk->s, strlen(mk->s));
865 if(IS_SET(MODE_ECHO))
866 techo(mk->s, strlen(mk->s));
871 if(e->xbutton.button == Button1) {
872 gettimeofday(&now, NULL);
874 /* Clear previous selection, logically and visually. */
877 tsetdirt(sel.nb.y, sel.ne.y);
881 sel.type = SEL_REGULAR;
882 sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
883 sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
886 * If the user clicks below predefined timeouts specific
887 * snapping behaviour is exposed.
889 if(TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
890 sel.snap = SNAP_LINE;
891 } else if(TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
892 sel.snap = SNAP_WORD;
896 selsnap(sel.snap, &sel.ob.x, &sel.ob.y, -1);
897 selsnap(sel.snap, &sel.oe.x, &sel.oe.y, +1);
901 * Draw selection, unless it's regular and we don't want to
902 * make clicks visible
906 tsetdirt(sel.nb.y, sel.ne.y);
909 sel.tclick2 = sel.tclick1;
917 int x, y, bufsize, size, i, ex;
923 bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
924 ptr = str = xmalloc(bufsize);
926 /* append every set & selected glyph to the selection */
927 for(y = sel.nb.y; y < sel.ne.y + 1; y++) {
928 gp = &term.line[y][0];
929 last = gp + term.col;
931 while(--last >= gp && !(selected(last - gp, y) && \
932 strcmp(last->c, " ") != 0))
935 for(x = 0; gp <= last; x++, ++gp) {
939 size = utf8size(gp->c);
940 memcpy(ptr, gp->c, size);
945 * Copy and pasting of line endings is inconsistent
946 * in the inconsistent terminal and GUI world.
947 * The best solution seems like to produce '\n' when
948 * something is copied from st and convert '\n' to
949 * '\r', when something to be pasted is received by
951 * FIXME: Fix the computer world.
953 if(y < sel.ne.y && !((gp-1)->mode & ATTR_WRAP))
957 * If the last selected line expands in the selection
958 * after the visible text '\n' is appended.
962 while(--i > 0 && term.line[y][i].c[0] == ' ')
965 if(sel.nb.y == sel.ne.y && sel.ne.x < sel.nb.x)
977 selnotify(XEvent *e) {
978 ulong nitems, ofs, rem;
980 uchar *data, *last, *repl;
985 if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
986 False, AnyPropertyType, &type, &format,
987 &nitems, &rem, &data)) {
988 fprintf(stderr, "Clipboard allocation failed\n");
993 * As seen in selcopy:
994 * Line endings are inconsistent in the terminal and GUI world
995 * copy and pasting. When receiving some selection data,
996 * replace all '\n' with '\r'.
997 * FIXME: Fix the computer world.
1000 last = data + nitems * format / 8;
1001 while((repl = memchr(repl, '\n', last - repl))) {
1005 ttywrite((const char *)data, nitems * format / 8);
1007 /* number of 32-bit chunks returned */
1008 ofs += nitems * format / 32;
1013 selpaste(const Arg *dummy) {
1014 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
1015 xw.win, CurrentTime);
1019 clippaste(const Arg *dummy) {
1022 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1023 XConvertSelection(xw.dpy, clipboard, sel.xtarget, XA_PRIMARY,
1024 xw.win, CurrentTime);
1028 selclear(XEvent *e) {
1032 tsetdirt(sel.nb.y, sel.ne.y);
1036 selrequest(XEvent *e) {
1037 XSelectionRequestEvent *xsre;
1038 XSelectionEvent xev;
1039 Atom xa_targets, string;
1041 xsre = (XSelectionRequestEvent *) e;
1042 xev.type = SelectionNotify;
1043 xev.requestor = xsre->requestor;
1044 xev.selection = xsre->selection;
1045 xev.target = xsre->target;
1046 xev.time = xsre->time;
1048 xev.property = None;
1050 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
1051 if(xsre->target == xa_targets) {
1052 /* respond with the supported type */
1053 string = sel.xtarget;
1054 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
1055 XA_ATOM, 32, PropModeReplace,
1056 (uchar *) &string, 1);
1057 xev.property = xsre->property;
1058 } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
1059 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
1060 xsre->target, 8, PropModeReplace,
1061 (uchar *) sel.clip, strlen(sel.clip));
1062 xev.property = xsre->property;
1065 /* all done, send a notification to the listener */
1066 if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
1067 fprintf(stderr, "Error sending SelectionNotify event\n");
1071 xsetsel(char *str) {
1072 /* register the selection for both the clipboard and the primary */
1078 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
1080 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
1081 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
1085 brelease(XEvent *e) {
1086 if(IS_SET(MODE_MOUSE)) {
1091 if(e->xbutton.button == Button2) {
1093 } else if(e->xbutton.button == Button1) {
1101 tsetdirt(sel.nb.y, sel.ne.y);
1106 bmotion(XEvent *e) {
1107 int oldey, oldex, oldsby, oldsey;
1109 if(IS_SET(MODE_MOUSE)) {
1124 if(oldey != sel.oe.y || oldex != sel.oe.x)
1125 tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
1129 die(const char *errstr, ...) {
1132 va_start(ap, errstr);
1133 vfprintf(stderr, errstr, ap);
1141 char *envshell = getenv("SHELL");
1142 const struct passwd *pass = getpwuid(getuid());
1143 char buf[sizeof(long) * 8 + 1];
1145 unsetenv("COLUMNS");
1147 unsetenv("TERMCAP");
1150 setenv("LOGNAME", pass->pw_name, 1);
1151 setenv("USER", pass->pw_name, 1);
1152 setenv("SHELL", pass->pw_shell, 0);
1153 setenv("HOME", pass->pw_dir, 0);
1156 snprintf(buf, sizeof(buf), "%lu", xw.win);
1157 setenv("WINDOWID", buf, 1);
1159 signal(SIGCHLD, SIG_DFL);
1160 signal(SIGHUP, SIG_DFL);
1161 signal(SIGINT, SIG_DFL);
1162 signal(SIGQUIT, SIG_DFL);
1163 signal(SIGTERM, SIG_DFL);
1164 signal(SIGALRM, SIG_DFL);
1166 DEFAULT(envshell, shell);
1167 setenv("TERM", termname, 1);
1168 args = opt_cmd ? opt_cmd : (char *[]){envshell, "-i", NULL};
1169 execvp(args[0], args);
1177 if(waitpid(pid, &stat, 0) < 0)
1178 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
1180 if(WIFEXITED(stat)) {
1181 exit(WEXITSTATUS(stat));
1190 struct winsize w = {term.row, term.col, 0, 0};
1192 /* seems to work fine on linux, openbsd and freebsd */
1193 if(openpty(&m, &s, NULL, NULL, &w) < 0)
1194 die("openpty failed: %s\n", SERRNO);
1196 switch(pid = fork()) {
1198 die("fork failed\n");
1201 setsid(); /* create a new process group */
1202 dup2(s, STDIN_FILENO);
1203 dup2(s, STDOUT_FILENO);
1204 dup2(s, STDERR_FILENO);
1205 if(ioctl(s, TIOCSCTTY, NULL) < 0)
1206 die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
1214 signal(SIGCHLD, sigchld);
1216 iofd = (!strcmp(opt_io, "-")) ?
1218 open(opt_io, O_WRONLY | O_CREAT, 0666);
1220 fprintf(stderr, "Error opening %s:%s\n",
1221 opt_io, strerror(errno));
1231 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
1233 fprintf(stderr, "\n");
1238 static char buf[BUFSIZ];
1239 static int buflen = 0;
1242 int charsize; /* size of utf8 char in bytes */
1246 /* append read bytes to unprocessed bytes */
1247 if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
1248 die("Couldn't read from shell: %s\n", SERRNO);
1250 /* process every complete utf8 char */
1253 while(buflen >= UTF_SIZ || isfullutf8(ptr,buflen)) {
1254 charsize = utf8decode(ptr, &utf8c);
1255 utf8encode(&utf8c, s);
1261 /* keep any uncomplete utf8 char for the next call */
1262 memmove(buf, ptr, buflen);
1266 ttywrite(const char *s, size_t n) {
1267 if(write(cmdfd, s, n) == -1)
1268 die("write error on tty: %s\n", SERRNO);
1275 w.ws_row = term.row;
1276 w.ws_col = term.col;
1277 w.ws_xpixel = xw.tw;
1278 w.ws_ypixel = xw.th;
1279 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
1280 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
1284 tattrset(int attr) {
1287 for(i = 0; i < term.row-1; i++) {
1288 for(j = 0; j < term.col-1; j++) {
1289 if(term.line[i][j].mode & attr)
1298 tsetdirt(int top, int bot) {
1301 LIMIT(top, 0, term.row-1);
1302 LIMIT(bot, 0, term.row-1);
1304 for(i = top; i <= bot; i++)
1309 tsetdirtattr(int attr) {
1312 for(i = 0; i < term.row-1; i++) {
1313 for(j = 0; j < term.col-1; j++) {
1314 if(term.line[i][j].mode & attr) {
1324 tsetdirt(0, term.row-1);
1331 if(mode == CURSOR_SAVE) {
1333 } else if(mode == CURSOR_LOAD) {
1343 term.c = (TCursor){{
1347 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1349 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1350 for(i = tabspaces; i < term.col; i += tabspaces)
1353 term.bot = term.row - 1;
1354 term.mode = MODE_WRAP;
1356 tclearregion(0, 0, term.col-1, term.row-1);
1358 tcursor(CURSOR_SAVE);
1362 tnew(int col, int row) {
1363 memset(&term, 0, sizeof(Term));
1372 Line *tmp = term.line;
1374 term.line = term.alt;
1376 term.mode ^= MODE_ALTSCREEN;
1381 tscrolldown(int orig, int n) {
1385 LIMIT(n, 0, term.bot-orig+1);
1387 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
1389 for(i = term.bot; i >= orig+n; i--) {
1390 temp = term.line[i];
1391 term.line[i] = term.line[i-n];
1392 term.line[i-n] = temp;
1395 term.dirty[i-n] = 1;
1402 tscrollup(int orig, int n) {
1405 LIMIT(n, 0, term.bot-orig+1);
1407 tclearregion(0, orig, term.col-1, orig+n-1);
1409 for(i = orig; i <= term.bot-n; i++) {
1410 temp = term.line[i];
1411 term.line[i] = term.line[i+n];
1412 term.line[i+n] = temp;
1415 term.dirty[i+n] = 1;
1418 selscroll(orig, -n);
1422 selscroll(int orig, int n) {
1426 if(BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
1427 if((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
1431 if(sel.type == SEL_RECTANGULAR) {
1432 if(sel.ob.y < term.top)
1433 sel.ob.y = term.top;
1434 if(sel.oe.y > term.bot)
1435 sel.oe.y = term.bot;
1437 if(sel.ob.y < term.top) {
1438 sel.ob.y = term.top;
1441 if(sel.oe.y > term.bot) {
1442 sel.oe.y = term.bot;
1443 sel.oe.x = term.col;
1451 tnewline(int first_col) {
1455 tscrollup(term.top, 1);
1459 tmoveto(first_col ? 0 : term.c.x, y);
1464 char *p = csiescseq.buf, *np;
1473 csiescseq.buf[csiescseq.len] = '\0';
1474 while(p < csiescseq.buf+csiescseq.len) {
1476 v = strtol(p, &np, 10);
1479 if(v == LONG_MAX || v == LONG_MIN)
1481 csiescseq.arg[csiescseq.narg++] = v;
1483 if(*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
1487 csiescseq.mode = *p;
1490 /* for absolute user moves, when decom is set */
1492 tmoveato(int x, int y) {
1493 tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
1497 tmoveto(int x, int y) {
1500 if(term.c.state & CURSOR_ORIGIN) {
1505 maxy = term.row - 1;
1507 LIMIT(x, 0, term.col-1);
1508 LIMIT(y, miny, maxy);
1509 term.c.state &= ~CURSOR_WRAPNEXT;
1515 tsetchar(char *c, Glyph *attr, int x, int y) {
1516 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1517 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1518 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1519 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1520 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1521 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1522 "", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1523 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1524 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1528 * The table is proudly stolen from rxvt.
1530 if(attr->mode & ATTR_GFX) {
1531 if(c[0] >= 0x41 && c[0] <= 0x7e
1532 && vt100_0[c[0] - 0x41]) {
1533 c = vt100_0[c[0] - 0x41];
1538 term.line[y][x] = *attr;
1539 memcpy(term.line[y][x].c, c, UTF_SIZ);
1543 tclearregion(int x1, int y1, int x2, int y2) {
1547 temp = x1, x1 = x2, x2 = temp;
1549 temp = y1, y1 = y2, y2 = temp;
1551 LIMIT(x1, 0, term.col-1);
1552 LIMIT(x2, 0, term.col-1);
1553 LIMIT(y1, 0, term.row-1);
1554 LIMIT(y2, 0, term.row-1);
1556 for(y = y1; y <= y2; y++) {
1558 for(x = x1; x <= x2; x++) {
1561 term.line[y][x] = term.c.attr;
1562 memcpy(term.line[y][x].c, " ", 2);
1568 tdeletechar(int n) {
1569 int src = term.c.x + n;
1571 int size = term.col - src;
1573 term.dirty[term.c.y] = 1;
1575 if(src >= term.col) {
1576 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1580 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
1581 size * sizeof(Glyph));
1582 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1586 tinsertblank(int n) {
1589 int size = term.col - dst;
1591 term.dirty[term.c.y] = 1;
1593 if(dst >= term.col) {
1594 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1598 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
1599 size * sizeof(Glyph));
1600 tclearregion(src, term.c.y, dst - 1, term.c.y);
1604 tinsertblankline(int n) {
1605 if(term.c.y < term.top || term.c.y > term.bot)
1608 tscrolldown(term.c.y, n);
1612 tdeleteline(int n) {
1613 if(term.c.y < term.top || term.c.y > term.bot)
1616 tscrollup(term.c.y, n);
1620 tsetattr(int *attr, int l) {
1623 for(i = 0; i < l; i++) {
1626 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE \
1627 | ATTR_BOLD | ATTR_ITALIC \
1629 term.c.attr.fg = defaultfg;
1630 term.c.attr.bg = defaultbg;
1633 term.c.attr.mode |= ATTR_BOLD;
1636 term.c.attr.mode |= ATTR_ITALIC;
1639 term.c.attr.mode |= ATTR_UNDERLINE;
1641 case 5: /* slow blink */
1642 case 6: /* rapid blink */
1643 term.c.attr.mode |= ATTR_BLINK;
1646 term.c.attr.mode |= ATTR_REVERSE;
1650 term.c.attr.mode &= ~ATTR_BOLD;
1653 term.c.attr.mode &= ~ATTR_ITALIC;
1656 term.c.attr.mode &= ~ATTR_UNDERLINE;
1660 term.c.attr.mode &= ~ATTR_BLINK;
1663 term.c.attr.mode &= ~ATTR_REVERSE;
1666 if(i + 2 < l && attr[i + 1] == 5) {
1668 if(BETWEEN(attr[i], 0, 255)) {
1669 term.c.attr.fg = attr[i];
1672 "erresc: bad fgcolor %d\n",
1677 "erresc(38): gfx attr %d unknown\n",
1682 term.c.attr.fg = defaultfg;
1685 if(i + 2 < l && attr[i + 1] == 5) {
1687 if(BETWEEN(attr[i], 0, 255)) {
1688 term.c.attr.bg = attr[i];
1691 "erresc: bad bgcolor %d\n",
1696 "erresc(48): gfx attr %d unknown\n",
1701 term.c.attr.bg = defaultbg;
1704 if(BETWEEN(attr[i], 30, 37)) {
1705 term.c.attr.fg = attr[i] - 30;
1706 } else if(BETWEEN(attr[i], 40, 47)) {
1707 term.c.attr.bg = attr[i] - 40;
1708 } else if(BETWEEN(attr[i], 90, 97)) {
1709 term.c.attr.fg = attr[i] - 90 + 8;
1710 } else if(BETWEEN(attr[i], 100, 107)) {
1711 term.c.attr.bg = attr[i] - 100 + 8;
1714 "erresc(default): gfx attr %d unknown\n",
1715 attr[i]), csidump();
1723 tsetscroll(int t, int b) {
1726 LIMIT(t, 0, term.row-1);
1727 LIMIT(b, 0, term.row-1);
1737 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
1740 tsetmode(bool priv, bool set, int *args, int narg) {
1744 for(lim = args + narg; args < lim; ++args) {
1748 case 1: /* DECCKM -- Cursor key */
1749 MODBIT(term.mode, set, MODE_APPCURSOR);
1751 case 5: /* DECSCNM -- Reverse video */
1753 MODBIT(term.mode, set, MODE_REVERSE);
1754 if(mode != term.mode)
1755 redraw(REDRAW_TIMEOUT);
1757 case 6: /* DECOM -- Origin */
1758 MODBIT(term.c.state, set, CURSOR_ORIGIN);
1761 case 7: /* DECAWM -- Auto wrap */
1762 MODBIT(term.mode, set, MODE_WRAP);
1764 case 0: /* Error (IGNORED) */
1765 case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
1766 case 3: /* DECCOLM -- Column (IGNORED) */
1767 case 4: /* DECSCLM -- Scroll (IGNORED) */
1768 case 8: /* DECARM -- Auto repeat (IGNORED) */
1769 case 18: /* DECPFF -- Printer feed (IGNORED) */
1770 case 19: /* DECPEX -- Printer extent (IGNORED) */
1771 case 42: /* DECNRCM -- National characters (IGNORED) */
1772 case 12: /* att610 -- Start blinking cursor (IGNORED) */
1774 case 25: /* DECTCEM -- Text Cursor Enable Mode */
1775 MODBIT(term.mode, !set, MODE_HIDE);
1777 case 1000: /* 1000,1002: enable xterm mouse report */
1778 MODBIT(term.mode, set, MODE_MOUSEBTN);
1779 MODBIT(term.mode, 0, MODE_MOUSEMOTION);
1782 MODBIT(term.mode, set, MODE_MOUSEMOTION);
1783 MODBIT(term.mode, 0, MODE_MOUSEBTN);
1786 MODBIT(term.mode, set, MODE_MOUSESGR);
1789 MODBIT(term.mode, set, MODE_8BIT);
1791 case 1049: /* = 1047 and 1048 */
1794 if (!allowaltscreen)
1797 alt = IS_SET(MODE_ALTSCREEN);
1799 tclearregion(0, 0, term.col-1,
1802 if(set ^ alt) /* set is always 1 or 0 */
1808 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1812 "erresc: unknown private set/reset mode %d\n",
1818 case 0: /* Error (IGNORED) */
1820 case 2: /* KAM -- keyboard action */
1821 MODBIT(term.mode, set, MODE_KBDLOCK);
1823 case 4: /* IRM -- Insertion-replacement */
1824 MODBIT(term.mode, set, MODE_INSERT);
1826 case 12: /* SRM -- Send/Receive */
1827 MODBIT(term.mode, !set, MODE_ECHO);
1829 case 20: /* LNM -- Linefeed/new line */
1830 MODBIT(term.mode, set, MODE_CRLF);
1834 "erresc: unknown set/reset mode %d\n",
1846 switch(csiescseq.mode) {
1849 fprintf(stderr, "erresc: unknown csi ");
1853 case '@': /* ICH -- Insert <n> blank char */
1854 DEFAULT(csiescseq.arg[0], 1);
1855 tinsertblank(csiescseq.arg[0]);
1857 case 'A': /* CUU -- Cursor <n> Up */
1858 DEFAULT(csiescseq.arg[0], 1);
1859 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
1861 case 'B': /* CUD -- Cursor <n> Down */
1862 case 'e': /* VPR --Cursor <n> Down */
1863 DEFAULT(csiescseq.arg[0], 1);
1864 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
1866 case 'c': /* DA -- Device Attributes */
1867 if(csiescseq.arg[0] == 0)
1868 ttywrite(VT102ID, sizeof(VT102ID) - 1);
1870 case 'C': /* CUF -- Cursor <n> Forward */
1871 case 'a': /* HPR -- Cursor <n> Forward */
1872 DEFAULT(csiescseq.arg[0], 1);
1873 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
1875 case 'D': /* CUB -- Cursor <n> Backward */
1876 DEFAULT(csiescseq.arg[0], 1);
1877 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
1879 case 'E': /* CNL -- Cursor <n> Down and first col */
1880 DEFAULT(csiescseq.arg[0], 1);
1881 tmoveto(0, term.c.y+csiescseq.arg[0]);
1883 case 'F': /* CPL -- Cursor <n> Up and first col */
1884 DEFAULT(csiescseq.arg[0], 1);
1885 tmoveto(0, term.c.y-csiescseq.arg[0]);
1887 case 'g': /* TBC -- Tabulation clear */
1888 switch(csiescseq.arg[0]) {
1889 case 0: /* clear current tab stop */
1890 term.tabs[term.c.x] = 0;
1892 case 3: /* clear all the tabs */
1893 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1899 case 'G': /* CHA -- Move to <col> */
1901 DEFAULT(csiescseq.arg[0], 1);
1902 tmoveto(csiescseq.arg[0]-1, term.c.y);
1904 case 'H': /* CUP -- Move to <row> <col> */
1906 DEFAULT(csiescseq.arg[0], 1);
1907 DEFAULT(csiescseq.arg[1], 1);
1908 tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
1910 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
1911 DEFAULT(csiescseq.arg[0], 1);
1912 while(csiescseq.arg[0]--)
1915 case 'J': /* ED -- Clear screen */
1917 switch(csiescseq.arg[0]) {
1919 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1920 if(term.c.y < term.row-1) {
1921 tclearregion(0, term.c.y+1, term.col-1,
1927 tclearregion(0, 0, term.col-1, term.c.y-1);
1928 tclearregion(0, term.c.y, term.c.x, term.c.y);
1931 tclearregion(0, 0, term.col-1, term.row-1);
1937 case 'K': /* EL -- Clear line */
1938 switch(csiescseq.arg[0]) {
1940 tclearregion(term.c.x, term.c.y, term.col-1,
1944 tclearregion(0, term.c.y, term.c.x, term.c.y);
1947 tclearregion(0, term.c.y, term.col-1, term.c.y);
1951 case 'S': /* SU -- Scroll <n> line up */
1952 DEFAULT(csiescseq.arg[0], 1);
1953 tscrollup(term.top, csiescseq.arg[0]);
1955 case 'T': /* SD -- Scroll <n> line down */
1956 DEFAULT(csiescseq.arg[0], 1);
1957 tscrolldown(term.top, csiescseq.arg[0]);
1959 case 'L': /* IL -- Insert <n> blank lines */
1960 DEFAULT(csiescseq.arg[0], 1);
1961 tinsertblankline(csiescseq.arg[0]);
1963 case 'l': /* RM -- Reset Mode */
1964 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
1966 case 'M': /* DL -- Delete <n> lines */
1967 DEFAULT(csiescseq.arg[0], 1);
1968 tdeleteline(csiescseq.arg[0]);
1970 case 'X': /* ECH -- Erase <n> char */
1971 DEFAULT(csiescseq.arg[0], 1);
1972 tclearregion(term.c.x, term.c.y,
1973 term.c.x + csiescseq.arg[0] - 1, term.c.y);
1975 case 'P': /* DCH -- Delete <n> char */
1976 DEFAULT(csiescseq.arg[0], 1);
1977 tdeletechar(csiescseq.arg[0]);
1979 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
1980 DEFAULT(csiescseq.arg[0], 1);
1981 while(csiescseq.arg[0]--)
1984 case 'd': /* VPA -- Move to <row> */
1985 DEFAULT(csiescseq.arg[0], 1);
1986 tmoveato(term.c.x, csiescseq.arg[0]-1);
1988 case 'h': /* SM -- Set terminal mode */
1989 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
1991 case 'm': /* SGR -- Terminal attribute (color) */
1992 tsetattr(csiescseq.arg, csiescseq.narg);
1994 case 'r': /* DECSTBM -- Set Scrolling Region */
1995 if(csiescseq.priv) {
1998 DEFAULT(csiescseq.arg[0], 1);
1999 DEFAULT(csiescseq.arg[1], term.row);
2000 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
2004 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
2005 tcursor(CURSOR_SAVE);
2007 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
2008 tcursor(CURSOR_LOAD);
2019 for(i = 0; i < csiescseq.len; i++) {
2020 c = csiescseq.buf[i] & 0xff;
2023 } else if(c == '\n') {
2025 } else if(c == '\r') {
2027 } else if(c == 0x1b) {
2030 printf("(%02x)", c);
2038 memset(&csiescseq, 0, sizeof(csiescseq));
2047 narg = strescseq.narg;
2049 switch(strescseq.type) {
2050 case ']': /* OSC -- Operating System Command */
2051 switch(i = atoi(strescseq.args[0])) {
2056 xsettitle(strescseq.args[1]);
2058 case 4: /* color set */
2061 p = strescseq.args[2];
2063 case 104: /* color reset, here p = NULL */
2064 j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
2065 if (!xsetcolorname(j, p)) {
2066 fprintf(stderr, "erresc: invalid color %s\n", p);
2069 * TODO if defaultbg color is changed, borders
2076 fprintf(stderr, "erresc: unknown str ");
2081 case 'k': /* old title set compatibility */
2082 xsettitle(strescseq.args[0]);
2084 case 'P': /* DSC -- Device Control String */
2085 case '_': /* APC -- Application Program Command */
2086 case '^': /* PM -- Privacy Message */
2088 fprintf(stderr, "erresc: unknown str ");
2097 char *p = strescseq.buf;
2100 strescseq.buf[strescseq.len] = '\0';
2101 while(p && strescseq.narg < STR_ARG_SIZ)
2102 strescseq.args[strescseq.narg++] = strsep(&p, ";");
2110 printf("ESC%c", strescseq.type);
2111 for(i = 0; i < strescseq.len; i++) {
2112 c = strescseq.buf[i] & 0xff;
2115 } else if(isprint(c)) {
2117 } else if(c == '\n') {
2119 } else if(c == '\r') {
2121 } else if(c == 0x1b) {
2124 printf("(%02x)", c);
2132 memset(&strescseq, 0, sizeof(strescseq));
2136 tputtab(bool forward) {
2142 for(++x; x < term.col && !term.tabs[x]; ++x)
2147 for(--x; x > 0 && !term.tabs[x]; --x)
2150 tmoveto(x, term.c.y);
2154 techo(char *buf, int len) {
2155 for(; len > 0; buf++, len--) {
2158 if(c == '\033') { /* escape */
2161 } else if(c < '\x20') { /* control code */
2162 if(c != '\n' && c != '\r' && c != '\t') {
2176 tputc(char *c, int len) {
2178 bool control = ascii < '\x20' || ascii == 0177;
2181 if(xwrite(iofd, c, len) < 0) {
2182 fprintf(stderr, "Error writing in %s:%s\n",
2183 opt_io, strerror(errno));
2190 * STR sequences must be checked before anything else
2191 * because it can use some control codes as part of the sequence.
2193 if(term.esc & ESC_STR) {
2196 term.esc = ESC_START | ESC_STR_END;
2198 case '\a': /* backwards compatibility to xterm */
2203 if(strescseq.len + len < sizeof(strescseq.buf) - 1) {
2204 memmove(&strescseq.buf[strescseq.len], c, len);
2205 strescseq.len += len;
2208 * Here is a bug in terminals. If the user never sends
2209 * some code to stop the str or esc command, then st
2210 * will stop responding. But this is better than
2211 * silently failing with unknown characters. At least
2212 * then users will report back.
2214 * In the case users ever get fixed, here is the code:
2226 * Actions of control codes must be performed as soon they arrive
2227 * because they can be embedded inside a control sequence, and
2228 * they must not cause conflicts with sequences.
2236 tmoveto(term.c.x-1, term.c.y);
2239 tmoveto(0, term.c.y);
2244 /* go to first col if the mode is set */
2245 tnewline(IS_SET(MODE_CRLF));
2247 case '\a': /* BEL */
2248 if(!(xw.state & WIN_FOCUSED))
2251 case '\033': /* ESC */
2253 term.esc = ESC_START;
2255 case '\016': /* SO */
2256 case '\017': /* SI */
2258 * Different charsets are hard to handle. Applications
2259 * should use the right alt charset escapes for the
2260 * only reason they still exist: line drawing. The
2261 * rest is incompatible history st should not support.
2264 case '\032': /* SUB */
2265 case '\030': /* CAN */
2268 case '\005': /* ENQ (IGNORED) */
2269 case '\000': /* NUL (IGNORED) */
2270 case '\021': /* XON (IGNORED) */
2271 case '\023': /* XOFF (IGNORED) */
2272 case 0177: /* DEL (IGNORED) */
2275 } else if(term.esc & ESC_START) {
2276 if(term.esc & ESC_CSI) {
2277 csiescseq.buf[csiescseq.len++] = ascii;
2278 if(BETWEEN(ascii, 0x40, 0x7E)
2279 || csiescseq.len >= \
2280 sizeof(csiescseq.buf)-1) {
2285 } else if(term.esc & ESC_STR_END) {
2289 } else if(term.esc & ESC_ALTCHARSET) {
2291 case '0': /* Line drawing set */
2292 term.c.attr.mode |= ATTR_GFX;
2294 case 'B': /* USASCII */
2295 term.c.attr.mode &= ~ATTR_GFX;
2297 case 'A': /* UK (IGNORED) */
2298 case '<': /* multinational charset (IGNORED) */
2299 case '5': /* Finnish (IGNORED) */
2300 case 'C': /* Finnish (IGNORED) */
2301 case 'K': /* German (IGNORED) */
2304 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
2307 } else if(term.esc & ESC_TEST) {
2308 if(ascii == '8') { /* DEC screen alignment test. */
2309 char E[UTF_SIZ] = "E";
2312 for(x = 0; x < term.col; ++x) {
2313 for(y = 0; y < term.row; ++y)
2314 tsetchar(E, &term.c.attr, x, y);
2321 term.esc |= ESC_CSI;
2324 term.esc |= ESC_TEST;
2326 case 'P': /* DCS -- Device Control String */
2327 case '_': /* APC -- Application Program Command */
2328 case '^': /* PM -- Privacy Message */
2329 case ']': /* OSC -- Operating System Command */
2330 case 'k': /* old title set compatibility */
2332 strescseq.type = ascii;
2333 term.esc |= ESC_STR;
2335 case '(': /* set primary charset G0 */
2336 term.esc |= ESC_ALTCHARSET;
2338 case ')': /* set secondary charset G1 (IGNORED) */
2339 case '*': /* set tertiary charset G2 (IGNORED) */
2340 case '+': /* set quaternary charset G3 (IGNORED) */
2343 case 'D': /* IND -- Linefeed */
2344 if(term.c.y == term.bot) {
2345 tscrollup(term.top, 1);
2347 tmoveto(term.c.x, term.c.y+1);
2351 case 'E': /* NEL -- Next line */
2352 tnewline(1); /* always go to first col */
2355 case 'H': /* HTS -- Horizontal tab stop */
2356 term.tabs[term.c.x] = 1;
2359 case 'M': /* RI -- Reverse index */
2360 if(term.c.y == term.top) {
2361 tscrolldown(term.top, 1);
2363 tmoveto(term.c.x, term.c.y-1);
2367 case 'Z': /* DECID -- Identify Terminal */
2368 ttywrite(VT102ID, sizeof(VT102ID) - 1);
2371 case 'c': /* RIS -- Reset to inital state */
2376 case '=': /* DECPAM -- Application keypad */
2377 term.mode |= MODE_APPKEYPAD;
2380 case '>': /* DECPNM -- Normal keypad */
2381 term.mode &= ~MODE_APPKEYPAD;
2384 case '7': /* DECSC -- Save Cursor */
2385 tcursor(CURSOR_SAVE);
2388 case '8': /* DECRC -- Restore Cursor */
2389 tcursor(CURSOR_LOAD);
2392 case '\\': /* ST -- Stop */
2396 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2397 (uchar) ascii, isprint(ascii)? ascii:'.');
2402 * All characters which form part of a sequence are not
2408 * Display control codes only if we are in graphic mode
2410 if(control && !(term.c.attr.mode & ATTR_GFX))
2412 if(sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
2414 if(IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
2415 term.line[term.c.y][term.c.x].mode |= ATTR_WRAP;
2419 if(IS_SET(MODE_INSERT) && term.c.x+1 < term.col) {
2420 memmove(&term.line[term.c.y][term.c.x+1],
2421 &term.line[term.c.y][term.c.x],
2422 (term.col - term.c.x - 1) * sizeof(Glyph));
2425 tsetchar(c, &term.c.attr, term.c.x, term.c.y);
2426 if(term.c.x+1 < term.col) {
2427 tmoveto(term.c.x+1, term.c.y);
2429 term.c.state |= CURSOR_WRAPNEXT;
2434 tresize(int col, int row) {
2436 int minrow = MIN(row, term.row);
2437 int mincol = MIN(col, term.col);
2438 int slide = term.c.y - row + 1;
2442 if(col < 1 || row < 1)
2445 /* free unneeded rows */
2449 * slide screen to keep cursor where we expect it -
2450 * tscrollup would work here, but we can optimize to
2451 * memmove because we're freeing the earlier lines
2453 for(/* i = 0 */; i < slide; i++) {
2457 memmove(term.line, term.line + slide, row * sizeof(Line));
2458 memmove(term.alt, term.alt + slide, row * sizeof(Line));
2460 for(i += row; i < term.row; i++) {
2465 /* resize to new height */
2466 term.line = xrealloc(term.line, row * sizeof(Line));
2467 term.alt = xrealloc(term.alt, row * sizeof(Line));
2468 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
2469 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
2471 /* resize each row to new width, zero-pad if needed */
2472 for(i = 0; i < minrow; i++) {
2474 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
2475 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
2478 /* allocate any new rows */
2479 for(/* i == minrow */; i < row; i++) {
2481 term.line[i] = xcalloc(col, sizeof(Glyph));
2482 term.alt [i] = xcalloc(col, sizeof(Glyph));
2484 if(col > term.col) {
2485 bp = term.tabs + term.col;
2487 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
2488 while(--bp > term.tabs && !*bp)
2490 for(bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
2493 /* update terminal size */
2496 /* reset scrolling region */
2497 tsetscroll(0, row-1);
2498 /* make use of the LIMIT in tmoveto */
2499 tmoveto(term.c.x, term.c.y);
2500 /* Clearing both screens */
2503 if(mincol < col && 0 < minrow) {
2504 tclearregion(mincol, 0, col - 1, minrow - 1);
2506 if(0 < col && minrow < row) {
2507 tclearregion(0, minrow, col - 1, row - 1);
2510 } while(orig != term.line);
2516 xresize(int col, int row) {
2517 xw.tw = MAX(1, col * xw.cw);
2518 xw.th = MAX(1, row * xw.ch);
2520 XFreePixmap(xw.dpy, xw.buf);
2521 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
2522 DefaultDepth(xw.dpy, xw.scr));
2523 XftDrawChange(xw.draw, xw.buf);
2524 xclear(0, 0, xw.w, xw.h);
2527 static inline ushort
2528 sixd_to_16bit(int x) {
2529 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
2535 XRenderColor color = { .alpha = 0xffff };
2537 /* load colors [0-15] colors and [256-LEN(colorname)[ (config.h) */
2538 for(i = 0; i < LEN(colorname); i++) {
2541 if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, colorname[i], &dc.col[i])) {
2542 die("Could not allocate color '%s'\n", colorname[i]);
2546 /* load colors [16-255] ; same colors as xterm */
2547 for(i = 16, r = 0; r < 6; r++) {
2548 for(g = 0; g < 6; g++) {
2549 for(b = 0; b < 6; b++) {
2550 color.red = sixd_to_16bit(r);
2551 color.green = sixd_to_16bit(g);
2552 color.blue = sixd_to_16bit(b);
2553 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &dc.col[i])) {
2554 die("Could not allocate color %d\n", i);
2561 for(r = 0; r < 24; r++, i++) {
2562 color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
2563 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color,
2565 die("Could not allocate color %d\n", i);
2571 xsetcolorname(int x, const char *name) {
2572 XRenderColor color = { .alpha = 0xffff };
2574 if (x < 0 || x > LEN(colorname))
2577 if(16 <= x && x < 16 + 216) {
2578 int r = (x - 16) / 36, g = ((x - 16) % 36) / 6, b = (x - 16) % 6;
2579 color.red = sixd_to_16bit(r);
2580 color.green = sixd_to_16bit(g);
2581 color.blue = sixd_to_16bit(b);
2582 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &colour))
2583 return 0; /* something went wrong */
2586 } else if (16 + 216 <= x && x < 256) {
2587 color.red = color.green = color.blue = 0x0808 + 0x0a0a * (x - (16 + 216));
2588 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &colour))
2589 return 0; /* something went wrong */
2593 name = colorname[x];
2596 if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, &colour))
2603 xtermclear(int col1, int row1, int col2, int row2) {
2604 XftDrawRect(xw.draw,
2605 &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
2606 borderpx + col1 * xw.cw,
2607 borderpx + row1 * xw.ch,
2608 (col2-col1+1) * xw.cw,
2609 (row2-row1+1) * xw.ch);
2613 * Absolute coordinates.
2616 xclear(int x1, int y1, int x2, int y2) {
2617 XftDrawRect(xw.draw,
2618 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
2619 x1, y1, x2-x1, y2-y1);
2624 XClassHint class = {opt_class ? opt_class : termname, termname};
2625 XWMHints wm = {.flags = InputHint, .input = 1};
2626 XSizeHints *sizeh = NULL;
2628 sizeh = XAllocSizeHints();
2629 if(xw.isfixed == False) {
2630 sizeh->flags = PSize | PResizeInc | PBaseSize;
2631 sizeh->height = xw.h;
2632 sizeh->width = xw.w;
2633 sizeh->height_inc = xw.ch;
2634 sizeh->width_inc = xw.cw;
2635 sizeh->base_height = 2 * borderpx;
2636 sizeh->base_width = 2 * borderpx;
2638 sizeh->flags = PMaxSize | PMinSize;
2639 sizeh->min_width = sizeh->max_width = xw.fw;
2640 sizeh->min_height = sizeh->max_height = xw.fh;
2643 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm, &class);
2648 xloadfont(Font *f, FcPattern *pattern) {
2652 match = FcFontMatch(NULL, pattern, &result);
2656 if(!(f->match = XftFontOpenPattern(xw.dpy, match))) {
2657 FcPatternDestroy(match);
2662 f->pattern = FcPatternDuplicate(pattern);
2664 f->ascent = f->match->ascent;
2665 f->descent = f->match->descent;
2667 f->rbearing = f->match->max_advance_width;
2669 f->height = f->ascent + f->descent;
2670 f->width = f->lbearing + f->rbearing;
2676 xloadfonts(char *fontstr, int fontsize) {
2681 if(fontstr[0] == '-') {
2682 pattern = XftXlfdParse(fontstr, False, False);
2684 pattern = FcNameParse((FcChar8 *)fontstr);
2688 die("st: can't open font %s\n", fontstr);
2691 FcPatternDel(pattern, FC_PIXEL_SIZE);
2692 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
2693 usedfontsize = fontsize;
2695 result = FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval);
2696 if(result == FcResultMatch) {
2697 usedfontsize = (int)fontval;
2700 * Default font size is 12, if none given. This is to
2701 * have a known usedfontsize value.
2703 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
2708 FcConfigSubstitute(0, pattern, FcMatchPattern);
2709 FcDefaultSubstitute(pattern);
2711 if(xloadfont(&dc.font, pattern))
2712 die("st: can't open font %s\n", fontstr);
2714 /* Setting character width and height. */
2715 xw.cw = dc.font.width;
2716 xw.ch = dc.font.height;
2718 FcPatternDel(pattern, FC_SLANT);
2719 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
2720 if(xloadfont(&dc.ifont, pattern))
2721 die("st: can't open font %s\n", fontstr);
2723 FcPatternDel(pattern, FC_WEIGHT);
2724 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
2725 if(xloadfont(&dc.ibfont, pattern))
2726 die("st: can't open font %s\n", fontstr);
2728 FcPatternDel(pattern, FC_SLANT);
2729 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
2730 if(xloadfont(&dc.bfont, pattern))
2731 die("st: can't open font %s\n", fontstr);
2733 FcPatternDestroy(pattern);
2737 xloadfontset(Font *f) {
2740 if(!(f->set = FcFontSort(0, f->pattern, FcTrue, 0, &result)))
2746 xunloadfont(Font *f) {
2747 XftFontClose(xw.dpy, f->match);
2748 FcPatternDestroy(f->pattern);
2750 FcFontSetDestroy(f->set);
2754 xunloadfonts(void) {
2758 * Free the loaded fonts in the font cache. This is done backwards
2761 for(i = 0, ip = frccur; i < frclen; i++, ip--) {
2764 XftFontClose(xw.dpy, frc[ip].font);
2769 xunloadfont(&dc.font);
2770 xunloadfont(&dc.bfont);
2771 xunloadfont(&dc.ifont);
2772 xunloadfont(&dc.ibfont);
2776 xzoom(const Arg *arg) {
2778 xloadfonts(usedfont, usedfontsize + arg->i);
2785 XSetWindowAttributes attrs;
2791 if(!(xw.dpy = XOpenDisplay(NULL)))
2792 die("Can't open display\n");
2793 xw.scr = XDefaultScreen(xw.dpy);
2794 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
2798 die("Could not init fontconfig.\n");
2800 usedfont = (opt_font == NULL)? font : opt_font;
2801 xloadfonts(usedfont, 0);
2804 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
2807 /* adjust fixed window geometry */
2809 sw = DisplayWidth(xw.dpy, xw.scr);
2810 sh = DisplayHeight(xw.dpy, xw.scr);
2812 xw.fx = sw + xw.fx - xw.fw - 1;
2814 xw.fy = sh + xw.fy - xw.fh - 1;
2819 /* window - default size */
2820 xw.h = 2 * borderpx + term.row * xw.ch;
2821 xw.w = 2 * borderpx + term.col * xw.cw;
2827 attrs.background_pixel = dc.col[defaultbg].pixel;
2828 attrs.border_pixel = dc.col[defaultbg].pixel;
2829 attrs.bit_gravity = NorthWestGravity;
2830 attrs.event_mask = FocusChangeMask | KeyPressMask
2831 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
2832 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
2833 attrs.colormap = xw.cmap;
2835 parent = opt_embed ? strtol(opt_embed, NULL, 0) : \
2836 XRootWindow(xw.dpy, xw.scr);
2837 xw.win = XCreateWindow(xw.dpy, parent, xw.fx, xw.fy,
2838 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
2840 CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
2844 memset(&gcvalues, 0, sizeof(gcvalues));
2845 gcvalues.graphics_exposures = False;
2846 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
2848 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
2849 DefaultDepth(xw.dpy, xw.scr));
2850 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
2851 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
2853 /* Xft rendering context */
2854 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
2857 if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
2858 XSetLocaleModifiers("@im=local");
2859 if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
2860 XSetLocaleModifiers("@im=");
2861 if((xw.xim = XOpenIM(xw.dpy,
2862 NULL, NULL, NULL)) == NULL) {
2863 die("XOpenIM failed. Could not open input"
2868 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
2869 | XIMStatusNothing, XNClientWindow, xw.win,
2870 XNFocusWindow, xw.win, NULL);
2872 die("XCreateIC failed. Could not obtain input method.\n");
2874 /* white cursor, black outline */
2875 cursor = XCreateFontCursor(xw.dpy, XC_xterm);
2876 XDefineCursor(xw.dpy, xw.win, cursor);
2877 XRecolorCursor(xw.dpy, cursor,
2878 &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
2879 &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
2881 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
2882 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
2883 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
2886 XMapWindow(xw.dpy, xw.win);
2892 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
2893 int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
2894 width = charlen * xw.cw, xp, i;
2896 int u8fl, u8fblen, u8cblen, doesexist;
2899 Font *font = &dc.font;
2901 FcPattern *fcpattern, *fontpattern;
2902 FcFontSet *fcsets[] = { NULL };
2903 FcCharSet *fccharset;
2904 Colour *fg, *bg, *temp, revfg, revbg;
2905 XRenderColor colfg, colbg;
2908 frcflags = FRC_NORMAL;
2910 if(base.mode & ATTR_ITALIC) {
2911 if(base.fg == defaultfg)
2912 base.fg = defaultitalic;
2914 frcflags = FRC_ITALIC;
2915 } else if((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD)) {
2916 if(base.fg == defaultfg)
2917 base.fg = defaultitalic;
2919 frcflags = FRC_ITALICBOLD;
2920 } else if(base.mode & ATTR_UNDERLINE) {
2921 if(base.fg == defaultfg)
2922 base.fg = defaultunderline;
2924 fg = &dc.col[base.fg];
2925 bg = &dc.col[base.bg];
2927 if(base.mode & ATTR_BOLD) {
2928 if(BETWEEN(base.fg, 0, 7)) {
2929 /* basic system colors */
2930 fg = &dc.col[base.fg + 8];
2931 } else if(BETWEEN(base.fg, 16, 195)) {
2933 fg = &dc.col[base.fg + 36];
2934 } else if(BETWEEN(base.fg, 232, 251)) {
2936 fg = &dc.col[base.fg + 4];
2939 * Those ranges will not be brightened:
2940 * 8 - 15 – bright system colors
2941 * 196 - 231 – highest 256 color cube
2942 * 252 - 255 – brightest colors in greyscale
2945 frcflags = FRC_BOLD;
2948 if(IS_SET(MODE_REVERSE)) {
2949 if(fg == &dc.col[defaultfg]) {
2950 fg = &dc.col[defaultbg];
2952 colfg.red = ~fg->color.red;
2953 colfg.green = ~fg->color.green;
2954 colfg.blue = ~fg->color.blue;
2955 colfg.alpha = fg->color.alpha;
2956 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
2960 if(bg == &dc.col[defaultbg]) {
2961 bg = &dc.col[defaultfg];
2963 colbg.red = ~bg->color.red;
2964 colbg.green = ~bg->color.green;
2965 colbg.blue = ~bg->color.blue;
2966 colbg.alpha = bg->color.alpha;
2967 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &revbg);
2972 if(base.mode & ATTR_REVERSE) {
2978 if(base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
2981 /* Intelligent cleaning up of the borders. */
2983 xclear(0, (y == 0)? 0 : winy, borderpx,
2984 winy + xw.ch + ((y >= term.row-1)? xw.h : 0));
2986 if(x + charlen >= term.col) {
2987 xclear(winx + width, (y == 0)? 0 : winy, xw.w,
2988 ((y >= term.row-1)? xw.h : (winy + xw.ch)));
2991 xclear(winx, 0, winx + width, borderpx);
2993 xclear(winx, winy + xw.ch, winx + width, xw.h);
2995 /* Clean up the region we want to draw to. */
2996 XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
2998 /* Set the clip region because Xft is sometimes dirty. */
3003 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
3005 for(xp = winx; bytelen > 0;) {
3007 * Search for the range in the to be printed string of glyphs
3008 * that are in the main font. Then print that range. If
3009 * some glyph is found that is not in the font, do the
3017 u8cblen = utf8decode(s, &u8char);
3021 doesexist = XftCharIndex(xw.dpy, font->match, u8char);
3022 if(!doesexist || bytelen <= 0) {
3031 XftDrawStringUtf8(xw.draw, fg,
3033 winy + font->ascent,
3036 xp += font->width * u8fl;
3049 /* Search the font cache. */
3050 for(i = 0; i < frclen; i++, frp--) {
3054 if(frc[frp].c == u8char
3055 && frc[frp].flags == frcflags) {
3060 /* Nothing was found. */
3064 fcsets[0] = font->set;
3067 * Nothing was found in the cache. Now use
3068 * some dozen of Fontconfig calls to get the
3069 * font for one single character.
3071 fcpattern = FcPatternDuplicate(font->pattern);
3072 fccharset = FcCharSetCreate();
3074 FcCharSetAddChar(fccharset, u8char);
3075 FcPatternAddCharSet(fcpattern, FC_CHARSET,
3077 FcPatternAddBool(fcpattern, FC_SCALABLE,
3080 FcConfigSubstitute(0, fcpattern,
3082 FcDefaultSubstitute(fcpattern);
3084 fontpattern = FcFontSetMatch(0, fcsets,
3085 FcTrue, fcpattern, &fcres);
3088 * Overwrite or create the new cache entry.
3092 if(frccur >= LEN(frc))
3094 if(frclen > LEN(frc)) {
3096 XftFontClose(xw.dpy, frc[frccur].font);
3099 frc[frccur].font = XftFontOpenPattern(xw.dpy,
3101 frc[frccur].c = u8char;
3102 frc[frccur].flags = frcflags;
3104 FcPatternDestroy(fcpattern);
3105 FcCharSetDestroy(fccharset);
3110 XftDrawStringUtf8(xw.draw, fg, frc[frp].font,
3111 xp, winy + frc[frp].font->ascent,
3112 (FcChar8 *)u8c, u8cblen);
3118 XftDrawStringUtf8(xw.draw, fg, font->set, winx,
3119 winy + font->ascent, (FcChar8 *)s, bytelen);
3122 if(base.mode & ATTR_UNDERLINE) {
3123 XftDrawRect(xw.draw, fg, winx, winy + font->ascent + 1,
3127 /* Reset clip to none. */
3128 XftDrawSetClip(xw.draw, 0);
3133 static int oldx = 0, oldy = 0;
3135 Glyph g = {{' '}, ATTR_NULL, defaultbg, defaultcs};
3137 LIMIT(oldx, 0, term.col-1);
3138 LIMIT(oldy, 0, term.row-1);
3140 memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
3142 /* remove the old cursor */
3143 sl = utf8size(term.line[oldy][oldx].c);
3144 xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx,
3147 /* draw the new one */
3148 if(!(IS_SET(MODE_HIDE))) {
3149 if(xw.state & WIN_FOCUSED) {
3150 if(IS_SET(MODE_REVERSE)) {
3151 g.mode |= ATTR_REVERSE;
3157 xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
3159 XftDrawRect(xw.draw, &dc.col[defaultcs],
3160 borderpx + term.c.x * xw.cw,
3161 borderpx + term.c.y * xw.ch,
3163 XftDrawRect(xw.draw, &dc.col[defaultcs],
3164 borderpx + term.c.x * xw.cw,
3165 borderpx + term.c.y * xw.ch,
3167 XftDrawRect(xw.draw, &dc.col[defaultcs],
3168 borderpx + (term.c.x + 1) * xw.cw - 1,
3169 borderpx + term.c.y * xw.ch,
3171 XftDrawRect(xw.draw, &dc.col[defaultcs],
3172 borderpx + term.c.x * xw.cw,
3173 borderpx + (term.c.y + 1) * xw.ch - 1,
3176 oldx = term.c.x, oldy = term.c.y;
3182 xsettitle(char *p) {
3185 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
3187 XSetWMName(xw.dpy, xw.win, &prop);
3192 xsettitle(opt_title ? opt_title : "st");
3196 redraw(int timeout) {
3197 struct timespec tv = {0, timeout * 1000};
3203 nanosleep(&tv, NULL);
3204 XSync(xw.dpy, False); /* necessary for a good tput flash */
3210 drawregion(0, 0, term.col, term.row);
3211 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w,
3213 XSetForeground(xw.dpy, dc.gc,
3214 dc.col[IS_SET(MODE_REVERSE)?
3215 defaultfg : defaultbg].pixel);
3219 drawregion(int x1, int y1, int x2, int y2) {
3220 int ic, ib, x, y, ox, sl;
3222 char buf[DRAW_BUF_SIZ];
3223 bool ena_sel = sel.ob.x != -1;
3225 if(sel.alt ^ IS_SET(MODE_ALTSCREEN))
3228 if(!(xw.state & WIN_VISIBLE))
3231 for(y = y1; y < y2; y++) {
3235 xtermclear(0, y, term.col, y);
3237 base = term.line[y][0];
3239 for(x = x1; x < x2; x++) {
3240 new = term.line[y][x];
3241 if(ena_sel && selected(x, y))
3242 new.mode ^= ATTR_REVERSE;
3243 if(ib > 0 && (ATTRCMP(base, new)
3244 || ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
3245 xdraws(buf, base, ox, y, ic, ib);
3253 sl = utf8size(new.c);
3254 memcpy(buf+ib, new.c, sl);
3259 xdraws(buf, base, ox, y, ic, ib);
3265 expose(XEvent *ev) {
3266 XExposeEvent *e = &ev->xexpose;
3268 if(xw.state & WIN_REDRAW) {
3270 xw.state &= ~WIN_REDRAW;
3276 visibility(XEvent *ev) {
3277 XVisibilityEvent *e = &ev->xvisibility;
3279 if(e->state == VisibilityFullyObscured) {
3280 xw.state &= ~WIN_VISIBLE;
3281 } else if(!(xw.state & WIN_VISIBLE)) {
3282 /* need a full redraw for next Expose, not just a buf copy */
3283 xw.state |= WIN_VISIBLE | WIN_REDRAW;
3289 xw.state &= ~WIN_VISIBLE;
3293 xseturgency(int add) {
3294 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
3296 h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
3297 XSetWMHints(xw.dpy, xw.win, h);
3303 XFocusChangeEvent *e = &ev->xfocus;
3305 if(e->mode == NotifyGrab)
3308 if(ev->type == FocusIn) {
3309 XSetICFocus(xw.xic);
3310 xw.state |= WIN_FOCUSED;
3313 XUnsetICFocus(xw.xic);
3314 xw.state &= ~WIN_FOCUSED;
3319 match(uint mask, uint state) {
3320 state &= ~(ignoremod);
3322 if(mask == XK_NO_MOD && state)
3324 if(mask != XK_ANY_MOD && mask != XK_NO_MOD && !state)
3326 if((state & mask) != state)
3332 numlock(const Arg *dummy) {
3337 kmap(KeySym k, uint state) {
3342 /* Check for mapped keys out of X11 function keys. */
3343 for(i = 0; i < LEN(mappedkeys); i++) {
3344 if(mappedkeys[i] == k)
3347 if(i == LEN(mappedkeys)) {
3348 if((k & 0xFFFF) < 0xFD00)
3352 for(kp = key; kp < key + LEN(key); kp++) {
3358 if(!match(mask, state))
3361 if(kp->appkey > 0) {
3362 if(!IS_SET(MODE_APPKEYPAD))
3364 if(term.numlock && kp->appkey == 2)
3366 } else if(kp->appkey < 0 && IS_SET(MODE_APPKEYPAD)) {
3370 if((kp->appcursor < 0 && IS_SET(MODE_APPCURSOR)) ||
3372 && !IS_SET(MODE_APPCURSOR))) {
3376 if((kp->crlf < 0 && IS_SET(MODE_CRLF)) ||
3377 (kp->crlf > 0 && !IS_SET(MODE_CRLF))) {
3388 kpress(XEvent *ev) {
3389 XKeyEvent *e = &ev->xkey;
3391 char xstr[31], buf[32], *customkey, *cp = buf;
3397 if(IS_SET(MODE_KBDLOCK))
3400 len = XmbLookupString(xw.xic, e, xstr, sizeof(xstr), &ksym, &status);
3401 e->state &= ~Mod2Mask;
3403 for(bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
3404 if(ksym == bp->keysym && match(bp->mod, e->state)) {
3405 bp->func(&(bp->arg));
3410 /* 2. custom keys from config.h */
3411 if((customkey = kmap(ksym, e->state))) {
3412 len = strlen(customkey);
3413 memcpy(buf, customkey, len);
3414 /* 3. hardcoded (overrides X lookup) */
3419 if(len == 1 && e->state & Mod1Mask) {
3420 if(IS_SET(MODE_8BIT)) {
3423 ret = utf8encode(&c, cp);
3432 memcpy(cp, xstr, len);
3433 len = cp - buf + len;
3437 if(IS_SET(MODE_ECHO))
3443 cmessage(XEvent *e) {
3446 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
3448 if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
3449 if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
3450 xw.state |= WIN_FOCUSED;
3452 } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
3453 xw.state &= ~WIN_FOCUSED;
3455 } else if(e->xclient.data.l[0] == xw.wmdeletewin) {
3456 /* Send SIGHUP to shell */
3463 cresize(int width, int height) {
3471 col = (xw.w - 2 * borderpx) / xw.cw;
3472 row = (xw.h - 2 * borderpx) / xw.ch;
3481 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
3484 cresize(e->xconfigure.width, e->xconfigure.height);
3491 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
3492 struct timeval drawtimeout, *tv = NULL, now, last, lastblink;
3494 gettimeofday(&lastblink, NULL);
3495 gettimeofday(&last, NULL);
3497 for(xev = actionfps;;) {
3499 FD_SET(cmdfd, &rfd);
3502 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv) < 0) {
3505 die("select failed: %s\n", SERRNO);
3507 if(FD_ISSET(cmdfd, &rfd)) {
3510 blinkset = tattrset(ATTR_BLINK);
3511 if(!blinkset && term.mode & ATTR_BLINK)
3512 term.mode &= ~(MODE_BLINK);
3516 if(FD_ISSET(xfd, &rfd))
3519 gettimeofday(&now, NULL);
3520 drawtimeout.tv_sec = 0;
3521 drawtimeout.tv_usec = (1000/xfps) * 1000;
3525 if(blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
3526 tsetdirtattr(ATTR_BLINK);
3527 term.mode ^= MODE_BLINK;
3528 gettimeofday(&lastblink, NULL);
3531 if(TIMEDIFF(now, last) \
3532 > (xev? (1000/xfps) : (1000/actionfps))) {
3538 while(XPending(xw.dpy)) {
3539 XNextEvent(xw.dpy, &ev);
3540 if(XFilterEvent(&ev, None))
3542 if(handler[ev.type])
3543 (handler[ev.type])(&ev);
3549 if(xev && !FD_ISSET(xfd, &rfd))
3551 if(!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
3553 if(TIMEDIFF(now, lastblink) \
3555 drawtimeout.tv_usec = 1;
3557 drawtimeout.tv_usec = (1000 * \
3572 die("%s " VERSION " (c) 2010-2013 st engineers\n" \
3573 "usage: st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]" \
3574 " [-t title] [-w windowid] [-e command ...]\n", argv0);
3578 main(int argc, char *argv[]) {
3582 xw.fw = xw.fh = xw.fx = xw.fy = 0;
3587 allowaltscreen = false;
3590 opt_class = EARGF(usage());
3593 /* eat all remaining arguments */
3598 opt_font = EARGF(usage());
3601 bitm = XParseGeometry(EARGF(usage()), &xr, &yr, &wr, &hr);
3606 if(bitm & WidthValue)
3608 if(bitm & HeightValue)
3610 if(bitm & XNegative && xw.fx == 0)
3612 if(bitm & XNegative && xw.fy == 0)
3615 if(xw.fh != 0 && xw.fw != 0)
3619 opt_io = EARGF(usage());
3622 opt_title = EARGF(usage());
3625 opt_embed = EARGF(usage());
3633 setlocale(LC_CTYPE, "");
3634 XSetLocaleModifiers("");
3640 cresize(xw.h, xw.w);