1 /* See LICENSE for license details. */
14 #include <sys/ioctl.h>
15 #include <sys/select.h>
18 #include <sys/types.h>
24 #include <fontconfig/fontconfig.h>
28 #include <X11/cursorfont.h>
29 #include <X11/Xft/Xft.h>
41 #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
43 #elif defined(__FreeBSD__) || defined(__DragonFly__)
48 #define UTF_INVALID 0xFFFD
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
55 #define NUMMAXLEN(x) ((int)(sizeof(x) * 2.56 + 0.5) + 1)
56 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
57 #define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f) || (c) == '\177')
58 #define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
59 #define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
60 #define ISDELIM(u) (utf8strchr(worddelimiters, u) != NULL)
63 #define ISO14755CMD "dmenu -w %lu -p codepoint: </dev/null"
65 enum cursor_movement {
89 ESC_STR = 4, /* OSC, PM, APC */
91 ESC_STR_END = 16, /* a final string was encountered */
92 ESC_TEST = 32, /* Enter in test mode */
97 /* CSI Escape sequence structs */
98 /* ESC '[' [[ [<priv>] <arg> [;]] <mode> [<mode>]] */
100 char buf[ESC_BUF_SIZ]; /* raw string */
101 int len; /* raw string length */
103 int arg[ESC_ARG_SIZ];
104 int narg; /* nb of args */
108 /* STR Escape sequence structs */
109 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
111 char type; /* ESC type ... */
112 char buf[STR_BUF_SIZ]; /* raw string */
113 int len; /* raw string length */
114 char *args[STR_ARG_SIZ];
115 int narg; /* nb of args */
122 /* three valued logic variables: 0 indifferent, 1 on, -1 off */
123 signed char appkey; /* application keypad */
124 signed char appcursor; /* application cursor */
125 signed char crlf; /* crlf mode */
128 /* function definitions used in config.h */
129 static void clipcopy(const Arg *);
130 static void clippaste(const Arg *);
131 static void numlock(const Arg *);
132 static void selpaste(const Arg *);
133 static void zoom(const Arg *);
134 static void zoomabs(const Arg *);
135 static void zoomreset(const Arg *);
136 static void printsel(const Arg *);
137 static void printscreen(const Arg *) ;
138 static void iso14755(const Arg *);
139 static void toggleprinter(const Arg *);
140 static void sendbreak(const Arg *);
142 /* config.h for applying patches and the configuration. */
145 static void execsh(void);
146 static void stty(void);
147 static void sigchld(int);
149 static void csidump(void);
150 static void csihandle(void);
151 static void csiparse(void);
152 static void csireset(void);
153 static int eschandle(uchar);
154 static void strdump(void);
155 static void strhandle(void);
156 static void strparse(void);
157 static void strreset(void);
159 static void tprinter(char *, size_t);
160 static void tdumpsel(void);
161 static void tdumpline(int);
162 static void tdump(void);
163 static void tclearregion(int, int, int, int);
164 static void tcursor(int);
165 static void tdeletechar(int);
166 static void tdeleteline(int);
167 static void tinsertblank(int);
168 static void tinsertblankline(int);
169 static int tlinelen(int);
170 static void tmoveto(int, int);
171 static void tmoveato(int, int);
172 static void tnewline(int);
173 static void tputtab(int);
174 static void tputc(Rune);
175 static void treset(void);
176 static void tresize(int, int);
177 static void tscrollup(int, int);
178 static void tscrolldown(int, int);
179 static void tsetattr(int *, int);
180 static void tsetchar(Rune, Glyph *, int, int);
181 static void tsetscroll(int, int);
182 static void tswapscreen(void);
183 static void tsetmode(int, int, int *, int);
184 static void tfulldirt(void);
185 static void techo(Rune);
186 static void tcontrolcode(uchar );
187 static void tdectest(char );
188 static void tdefutf8(char);
189 static int32_t tdefcolor(int *, int *, int);
190 static void tdeftran(char);
191 static void tstrsequence(uchar);
193 static void selscroll(int, int);
194 static void selsnap(int *, int *, int);
196 static Rune utf8decodebyte(char, size_t *);
197 static char utf8encodebyte(Rune, size_t);
198 static char *utf8strchr(char *s, Rune u);
199 static size_t utf8validate(Rune *, size_t);
201 static ssize_t xwrite(int, const char *, size_t);
202 static void *xrealloc(void *, size_t);
210 char **opt_cmd = NULL;
211 char *opt_class = NULL;
212 char *opt_embed = NULL;
213 char *opt_font = NULL;
215 char *opt_line = NULL;
216 char *opt_name = NULL;
217 char *opt_title = NULL;
218 int oldbutton = 3; /* button event on startup: 3 = release */
220 static CSIEscape csiescseq;
221 static STREscape strescseq;
224 char *usedfont = NULL;
225 double usedfontsize = 0;
226 double defaultfontsize = 0;
228 static uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
229 static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
230 static Rune utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
231 static Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
233 /* config.h array lengths */
234 size_t colornamelen = LEN(colorname);
235 size_t mshortcutslen = LEN(mshortcuts);
236 size_t shortcutslen = LEN(shortcuts);
237 size_t selmaskslen = LEN(selmasks);
240 xwrite(int fd, const char *s, size_t len)
246 r = write(fd, s, len);
259 void *p = malloc(len);
262 die("Out of memory\n");
268 xrealloc(void *p, size_t len)
270 if ((p = realloc(p, len)) == NULL)
271 die("Out of memory\n");
279 if ((s = strdup(s)) == NULL)
280 die("Out of memory\n");
286 utf8decode(char *c, Rune *u, size_t clen)
288 size_t i, j, len, type;
294 udecoded = utf8decodebyte(c[0], &len);
295 if (!BETWEEN(len, 1, UTF_SIZ))
297 for (i = 1, j = 1; i < clen && j < len; ++i, ++j) {
298 udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
305 utf8validate(u, len);
311 utf8decodebyte(char c, size_t *i)
313 for (*i = 0; *i < LEN(utfmask); ++(*i))
314 if (((uchar)c & utfmask[*i]) == utfbyte[*i])
315 return (uchar)c & ~utfmask[*i];
321 utf8encode(Rune u, char *c)
325 len = utf8validate(&u, 0);
329 for (i = len - 1; i != 0; --i) {
330 c[i] = utf8encodebyte(u, 0);
333 c[0] = utf8encodebyte(u, len);
339 utf8encodebyte(Rune u, size_t i)
341 return utfbyte[i] | (u & ~utfmask[i]);
345 utf8strchr(char *s, Rune u)
351 for (i = 0, j = 0; i < len; i += j) {
352 if (!(j = utf8decode(&s[i], &r, len - i)))
362 utf8validate(Rune *u, size_t i)
364 if (!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
366 for (i = 1; *u > utfmax[i]; ++i)
375 clock_gettime(CLOCK_MONOTONIC, &sel.tclick1);
376 clock_gettime(CLOCK_MONOTONIC, &sel.tclick2);
381 sel.clipboard = NULL;
390 return LIMIT(x, 0, term.col-1);
399 return LIMIT(y, 0, term.row-1);
407 if (term.line[y][i - 1].mode & ATTR_WRAP)
410 while (i > 0 && term.line[y][i - 1].u == ' ')
421 if (sel.type == SEL_REGULAR && sel.ob.y != sel.oe.y) {
422 sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
423 sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
425 sel.nb.x = MIN(sel.ob.x, sel.oe.x);
426 sel.ne.x = MAX(sel.ob.x, sel.oe.x);
428 sel.nb.y = MIN(sel.ob.y, sel.oe.y);
429 sel.ne.y = MAX(sel.ob.y, sel.oe.y);
431 selsnap(&sel.nb.x, &sel.nb.y, -1);
432 selsnap(&sel.ne.x, &sel.ne.y, +1);
434 /* expand selection over line breaks */
435 if (sel.type == SEL_RECTANGULAR)
437 i = tlinelen(sel.nb.y);
440 if (tlinelen(sel.ne.y) <= sel.ne.x)
441 sel.ne.x = term.col - 1;
445 selected(int x, int y)
447 if (sel.mode == SEL_EMPTY)
450 if (sel.type == SEL_RECTANGULAR)
451 return BETWEEN(y, sel.nb.y, sel.ne.y)
452 && BETWEEN(x, sel.nb.x, sel.ne.x);
454 return BETWEEN(y, sel.nb.y, sel.ne.y)
455 && (y != sel.nb.y || x >= sel.nb.x)
456 && (y != sel.ne.y || x <= sel.ne.x);
460 selsnap(int *x, int *y, int direction)
462 int newx, newy, xt, yt;
463 int delim, prevdelim;
469 * Snap around if the word wraps around at the end or
470 * beginning of a line.
472 prevgp = &term.line[*y][*x];
473 prevdelim = ISDELIM(prevgp->u);
475 newx = *x + direction;
477 if (!BETWEEN(newx, 0, term.col - 1)) {
479 newx = (newx + term.col) % term.col;
480 if (!BETWEEN(newy, 0, term.row - 1))
486 yt = newy, xt = newx;
487 if (!(term.line[yt][xt].mode & ATTR_WRAP))
491 if (newx >= tlinelen(newy))
494 gp = &term.line[newy][newx];
495 delim = ISDELIM(gp->u);
496 if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
497 || (delim && gp->u != prevgp->u)))
508 * Snap around if the the previous line or the current one
509 * has set ATTR_WRAP at its end. Then the whole next or
510 * previous line will be selected.
512 *x = (direction < 0) ? 0 : term.col - 1;
514 for (; *y > 0; *y += direction) {
515 if (!(term.line[*y-1][term.col-1].mode
520 } else if (direction > 0) {
521 for (; *y < term.row-1; *y += direction) {
522 if (!(term.line[*y][term.col-1].mode
536 int y, bufsize, lastx, linelen;
542 bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
543 ptr = str = xmalloc(bufsize);
545 /* append every set & selected glyph to the selection */
546 for (y = sel.nb.y; y <= sel.ne.y; y++) {
547 if ((linelen = tlinelen(y)) == 0) {
552 if (sel.type == SEL_RECTANGULAR) {
553 gp = &term.line[y][sel.nb.x];
556 gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0];
557 lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
559 last = &term.line[y][MIN(lastx, linelen-1)];
560 while (last >= gp && last->u == ' ')
563 for ( ; gp <= last; ++gp) {
564 if (gp->mode & ATTR_WDUMMY)
567 ptr += utf8encode(gp->u, ptr);
571 * Copy and pasting of line endings is inconsistent
572 * in the inconsistent terminal and GUI world.
573 * The best solution seems like to produce '\n' when
574 * something is copied from st and convert '\n' to
575 * '\r', when something to be pasted is received by
577 * FIXME: Fix the computer world.
579 if ((y < sel.ne.y || lastx >= linelen) && !(last->mode & ATTR_WRAP))
587 selpaste(const Arg *dummy)
593 clipcopy(const Arg *dummy)
599 clippaste(const Arg *dummy)
611 tsetdirt(sel.nb.y, sel.ne.y);
615 die(const char *errstr, ...)
619 va_start(ap, errstr);
620 vfprintf(stderr, errstr, ap);
628 char **args, *sh, *prog;
629 const struct passwd *pw;
632 if ((pw = getpwuid(getuid())) == NULL) {
634 die("getpwuid:%s\n", strerror(errno));
636 die("who are you?\n");
639 if ((sh = getenv("SHELL")) == NULL)
640 sh = (pw->pw_shell[0]) ? pw->pw_shell : shell;
648 args = (opt_cmd) ? opt_cmd : (char *[]) {prog, NULL};
653 setenv("LOGNAME", pw->pw_name, 1);
654 setenv("USER", pw->pw_name, 1);
655 setenv("SHELL", sh, 1);
656 setenv("HOME", pw->pw_dir, 1);
657 setenv("TERM", termname, 1);
660 signal(SIGCHLD, SIG_DFL);
661 signal(SIGHUP, SIG_DFL);
662 signal(SIGINT, SIG_DFL);
663 signal(SIGQUIT, SIG_DFL);
664 signal(SIGTERM, SIG_DFL);
665 signal(SIGALRM, SIG_DFL);
677 if ((p = waitpid(pid, &stat, WNOHANG)) < 0)
678 die("Waiting for pid %hd failed: %s\n", pid, strerror(errno));
683 if (!WIFEXITED(stat) || WEXITSTATUS(stat))
684 die("child finished with error '%d'\n", stat);
692 char cmd[_POSIX_ARG_MAX], **p, *q, *s;
695 if ((n = strlen(stty_args)) > sizeof(cmd)-1)
696 die("incorrect stty parameters\n");
697 memcpy(cmd, stty_args, n);
699 siz = sizeof(cmd) - n;
700 for (p = opt_cmd; p && (s = *p); ++p) {
701 if ((n = strlen(s)) > siz-1)
702 die("stty parameter length too long\n");
709 if (system(cmd) != 0)
710 perror("Couldn't call stty");
717 struct winsize w = {term.row, term.col, 0, 0};
720 term.mode |= MODE_PRINT;
721 iofd = (!strcmp(opt_io, "-")) ?
722 1 : open(opt_io, O_WRONLY | O_CREAT, 0666);
724 fprintf(stderr, "Error opening %s:%s\n",
725 opt_io, strerror(errno));
730 if ((cmdfd = open(opt_line, O_RDWR)) < 0)
731 die("open line failed: %s\n", strerror(errno));
737 /* seems to work fine on linux, openbsd and freebsd */
738 if (openpty(&m, &s, NULL, NULL, &w) < 0)
739 die("openpty failed: %s\n", strerror(errno));
741 switch (pid = fork()) {
743 die("fork failed\n");
747 setsid(); /* create a new process group */
751 if (ioctl(s, TIOCSCTTY, NULL) < 0)
752 die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
760 signal(SIGCHLD, sigchld);
768 static char buf[BUFSIZ];
769 static int buflen = 0;
771 int charsize; /* size of utf8 char in bytes */
775 /* append read bytes to unprocessed bytes */
776 if ((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
777 die("Couldn't read from shell: %s\n", strerror(errno));
783 if (IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) {
784 /* process a complete utf8 char */
785 charsize = utf8decode(ptr, &unicodep, buflen);
795 tputc(*ptr++ & 0xFF);
799 /* keep any uncomplete utf8 char for the next call */
801 memmove(buf, ptr, buflen);
807 ttywrite(const char *s, size_t n)
814 * Remember that we are using a pty, which might be a modem line.
815 * Writing too much will clog the line. That's why we are doing this
817 * FIXME: Migrate the world to Plan 9.
825 /* Check if we can write. */
826 if (pselect(cmdfd+1, &rfd, &wfd, NULL, NULL, NULL) < 0) {
829 die("select failed: %s\n", strerror(errno));
831 if (FD_ISSET(cmdfd, &wfd)) {
833 * Only write the bytes written by ttywrite() or the
834 * default of 256. This seems to be a reasonable value
835 * for a serial line. Bigger values might clog the I/O.
837 if ((r = write(cmdfd, s, (n < lim)? n : lim)) < 0)
841 * We weren't able to write out everything.
842 * This means the buffer is getting full
850 /* All bytes have been written. */
854 if (FD_ISSET(cmdfd, &rfd))
860 die("write error on tty: %s\n", strerror(errno));
864 ttysend(char *s, size_t n)
871 if (!IS_SET(MODE_ECHO))
875 for (t = s; t < lim; t += len) {
876 if (IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) {
877 len = utf8decode(t, &u, n);
896 w.ws_xpixel = win.tw;
897 w.ws_ypixel = win.th;
898 if (ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
899 fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno));
907 for (i = 0; i < term.row-1; i++) {
908 for (j = 0; j < term.col-1; j++) {
909 if (term.line[i][j].mode & attr)
918 tsetdirt(int top, int bot)
922 LIMIT(top, 0, term.row-1);
923 LIMIT(bot, 0, term.row-1);
925 for (i = top; i <= bot; i++)
930 tsetdirtattr(int attr)
934 for (i = 0; i < term.row-1; i++) {
935 for (j = 0; j < term.col-1; j++) {
936 if (term.line[i][j].mode & attr) {
947 tsetdirt(0, term.row-1);
954 int alt = IS_SET(MODE_ALTSCREEN);
956 if (mode == CURSOR_SAVE) {
958 } else if (mode == CURSOR_LOAD) {
960 tmoveto(c[alt].x, c[alt].y);
973 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
975 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
976 for (i = tabspaces; i < term.col; i += tabspaces)
979 term.bot = term.row - 1;
980 term.mode = MODE_WRAP|MODE_UTF8;
981 memset(term.trantbl, CS_USA, sizeof(term.trantbl));
984 for (i = 0; i < 2; i++) {
986 tcursor(CURSOR_SAVE);
987 tclearregion(0, 0, term.col-1, term.row-1);
993 tnew(int col, int row)
995 term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
1005 Line *tmp = term.line;
1007 term.line = term.alt;
1009 term.mode ^= MODE_ALTSCREEN;
1014 tscrolldown(int orig, int n)
1019 LIMIT(n, 0, term.bot-orig+1);
1021 tsetdirt(orig, term.bot-n);
1022 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
1024 for (i = term.bot; i >= orig+n; i--) {
1025 temp = term.line[i];
1026 term.line[i] = term.line[i-n];
1027 term.line[i-n] = temp;
1034 tscrollup(int orig, int n)
1039 LIMIT(n, 0, term.bot-orig+1);
1041 tclearregion(0, orig, term.col-1, orig+n-1);
1042 tsetdirt(orig+n, term.bot);
1044 for (i = orig; i <= term.bot-n; i++) {
1045 temp = term.line[i];
1046 term.line[i] = term.line[i+n];
1047 term.line[i+n] = temp;
1050 selscroll(orig, -n);
1054 selscroll(int orig, int n)
1059 if (BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
1060 if ((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
1064 if (sel.type == SEL_RECTANGULAR) {
1065 if (sel.ob.y < term.top)
1066 sel.ob.y = term.top;
1067 if (sel.oe.y > term.bot)
1068 sel.oe.y = term.bot;
1070 if (sel.ob.y < term.top) {
1071 sel.ob.y = term.top;
1074 if (sel.oe.y > term.bot) {
1075 sel.oe.y = term.bot;
1076 sel.oe.x = term.col;
1084 tnewline(int first_col)
1088 if (y == term.bot) {
1089 tscrollup(term.top, 1);
1093 tmoveto(first_col ? 0 : term.c.x, y);
1099 char *p = csiescseq.buf, *np;
1108 csiescseq.buf[csiescseq.len] = '\0';
1109 while (p < csiescseq.buf+csiescseq.len) {
1111 v = strtol(p, &np, 10);
1114 if (v == LONG_MAX || v == LONG_MIN)
1116 csiescseq.arg[csiescseq.narg++] = v;
1118 if (*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
1122 csiescseq.mode[0] = *p++;
1123 csiescseq.mode[1] = (p < csiescseq.buf+csiescseq.len) ? *p : '\0';
1126 /* for absolute user moves, when decom is set */
1128 tmoveato(int x, int y)
1130 tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
1134 tmoveto(int x, int y)
1138 if (term.c.state & CURSOR_ORIGIN) {
1143 maxy = term.row - 1;
1145 term.c.state &= ~CURSOR_WRAPNEXT;
1146 term.c.x = LIMIT(x, 0, term.col-1);
1147 term.c.y = LIMIT(y, miny, maxy);
1151 tsetchar(Rune u, Glyph *attr, int x, int y)
1153 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1154 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1155 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1156 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1157 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1158 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1159 "", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1160 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1161 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1165 * The table is proudly stolen from rxvt.
1167 if (term.trantbl[term.charset] == CS_GRAPHIC0 &&
1168 BETWEEN(u, 0x41, 0x7e) && vt100_0[u - 0x41])
1169 utf8decode(vt100_0[u - 0x41], &u, UTF_SIZ);
1171 if (term.line[y][x].mode & ATTR_WIDE) {
1172 if (x+1 < term.col) {
1173 term.line[y][x+1].u = ' ';
1174 term.line[y][x+1].mode &= ~ATTR_WDUMMY;
1176 } else if (term.line[y][x].mode & ATTR_WDUMMY) {
1177 term.line[y][x-1].u = ' ';
1178 term.line[y][x-1].mode &= ~ATTR_WIDE;
1182 term.line[y][x] = *attr;
1183 term.line[y][x].u = u;
1187 tclearregion(int x1, int y1, int x2, int y2)
1193 temp = x1, x1 = x2, x2 = temp;
1195 temp = y1, y1 = y2, y2 = temp;
1197 LIMIT(x1, 0, term.col-1);
1198 LIMIT(x2, 0, term.col-1);
1199 LIMIT(y1, 0, term.row-1);
1200 LIMIT(y2, 0, term.row-1);
1202 for (y = y1; y <= y2; y++) {
1204 for (x = x1; x <= x2; x++) {
1205 gp = &term.line[y][x];
1208 gp->fg = term.c.attr.fg;
1209 gp->bg = term.c.attr.bg;
1222 LIMIT(n, 0, term.col - term.c.x);
1226 size = term.col - src;
1227 line = term.line[term.c.y];
1229 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1230 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1239 LIMIT(n, 0, term.col - term.c.x);
1243 size = term.col - dst;
1244 line = term.line[term.c.y];
1246 memmove(&line[dst], &line[src], size * sizeof(Glyph));
1247 tclearregion(src, term.c.y, dst - 1, term.c.y);
1251 tinsertblankline(int n)
1253 if (BETWEEN(term.c.y, term.top, term.bot))
1254 tscrolldown(term.c.y, n);
1260 if (BETWEEN(term.c.y, term.top, term.bot))
1261 tscrollup(term.c.y, n);
1265 tdefcolor(int *attr, int *npar, int l)
1270 switch (attr[*npar + 1]) {
1271 case 2: /* direct color in RGB space */
1272 if (*npar + 4 >= l) {
1274 "erresc(38): Incorrect number of parameters (%d)\n",
1278 r = attr[*npar + 2];
1279 g = attr[*npar + 3];
1280 b = attr[*npar + 4];
1282 if (!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255))
1283 fprintf(stderr, "erresc: bad rgb color (%u,%u,%u)\n",
1286 idx = TRUECOLOR(r, g, b);
1288 case 5: /* indexed color */
1289 if (*npar + 2 >= l) {
1291 "erresc(38): Incorrect number of parameters (%d)\n",
1296 if (!BETWEEN(attr[*npar], 0, 255))
1297 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]);
1301 case 0: /* implemented defined (only foreground) */
1302 case 1: /* transparent */
1303 case 3: /* direct color in CMY space */
1304 case 4: /* direct color in CMYK space */
1307 "erresc(38): gfx attr %d unknown\n", attr[*npar]);
1315 tsetattr(int *attr, int l)
1320 for (i = 0; i < l; i++) {
1323 term.c.attr.mode &= ~(
1332 term.c.attr.fg = defaultfg;
1333 term.c.attr.bg = defaultbg;
1336 term.c.attr.mode |= ATTR_BOLD;
1339 term.c.attr.mode |= ATTR_FAINT;
1342 term.c.attr.mode |= ATTR_ITALIC;
1345 term.c.attr.mode |= ATTR_UNDERLINE;
1347 case 5: /* slow blink */
1349 case 6: /* rapid blink */
1350 term.c.attr.mode |= ATTR_BLINK;
1353 term.c.attr.mode |= ATTR_REVERSE;
1356 term.c.attr.mode |= ATTR_INVISIBLE;
1359 term.c.attr.mode |= ATTR_STRUCK;
1362 term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT);
1365 term.c.attr.mode &= ~ATTR_ITALIC;
1368 term.c.attr.mode &= ~ATTR_UNDERLINE;
1371 term.c.attr.mode &= ~ATTR_BLINK;
1374 term.c.attr.mode &= ~ATTR_REVERSE;
1377 term.c.attr.mode &= ~ATTR_INVISIBLE;
1380 term.c.attr.mode &= ~ATTR_STRUCK;
1383 if ((idx = tdefcolor(attr, &i, l)) >= 0)
1384 term.c.attr.fg = idx;
1387 term.c.attr.fg = defaultfg;
1390 if ((idx = tdefcolor(attr, &i, l)) >= 0)
1391 term.c.attr.bg = idx;
1394 term.c.attr.bg = defaultbg;
1397 if (BETWEEN(attr[i], 30, 37)) {
1398 term.c.attr.fg = attr[i] - 30;
1399 } else if (BETWEEN(attr[i], 40, 47)) {
1400 term.c.attr.bg = attr[i] - 40;
1401 } else if (BETWEEN(attr[i], 90, 97)) {
1402 term.c.attr.fg = attr[i] - 90 + 8;
1403 } else if (BETWEEN(attr[i], 100, 107)) {
1404 term.c.attr.bg = attr[i] - 100 + 8;
1407 "erresc(default): gfx attr %d unknown\n",
1408 attr[i]), csidump();
1416 tsetscroll(int t, int b)
1420 LIMIT(t, 0, term.row-1);
1421 LIMIT(b, 0, term.row-1);
1432 tsetmode(int priv, int set, int *args, int narg)
1437 for (lim = args + narg; args < lim; ++args) {
1440 case 1: /* DECCKM -- Cursor key */
1441 MODBIT(term.mode, set, MODE_APPCURSOR);
1443 case 5: /* DECSCNM -- Reverse video */
1445 MODBIT(term.mode, set, MODE_REVERSE);
1446 if (mode != term.mode)
1449 case 6: /* DECOM -- Origin */
1450 MODBIT(term.c.state, set, CURSOR_ORIGIN);
1453 case 7: /* DECAWM -- Auto wrap */
1454 MODBIT(term.mode, set, MODE_WRAP);
1456 case 0: /* Error (IGNORED) */
1457 case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
1458 case 3: /* DECCOLM -- Column (IGNORED) */
1459 case 4: /* DECSCLM -- Scroll (IGNORED) */
1460 case 8: /* DECARM -- Auto repeat (IGNORED) */
1461 case 18: /* DECPFF -- Printer feed (IGNORED) */
1462 case 19: /* DECPEX -- Printer extent (IGNORED) */
1463 case 42: /* DECNRCM -- National characters (IGNORED) */
1464 case 12: /* att610 -- Start blinking cursor (IGNORED) */
1466 case 25: /* DECTCEM -- Text Cursor Enable Mode */
1467 MODBIT(term.mode, !set, MODE_HIDE);
1469 case 9: /* X10 mouse compatibility mode */
1470 xsetpointermotion(0);
1471 MODBIT(term.mode, 0, MODE_MOUSE);
1472 MODBIT(term.mode, set, MODE_MOUSEX10);
1474 case 1000: /* 1000: report button press */
1475 xsetpointermotion(0);
1476 MODBIT(term.mode, 0, MODE_MOUSE);
1477 MODBIT(term.mode, set, MODE_MOUSEBTN);
1479 case 1002: /* 1002: report motion on button press */
1480 xsetpointermotion(0);
1481 MODBIT(term.mode, 0, MODE_MOUSE);
1482 MODBIT(term.mode, set, MODE_MOUSEMOTION);
1484 case 1003: /* 1003: enable all mouse motions */
1485 xsetpointermotion(set);
1486 MODBIT(term.mode, 0, MODE_MOUSE);
1487 MODBIT(term.mode, set, MODE_MOUSEMANY);
1489 case 1004: /* 1004: send focus events to tty */
1490 MODBIT(term.mode, set, MODE_FOCUS);
1492 case 1006: /* 1006: extended reporting mode */
1493 MODBIT(term.mode, set, MODE_MOUSESGR);
1496 MODBIT(term.mode, set, MODE_8BIT);
1498 case 1049: /* swap screen & set/restore cursor as xterm */
1499 if (!allowaltscreen)
1501 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1503 case 47: /* swap screen */
1505 if (!allowaltscreen)
1507 alt = IS_SET(MODE_ALTSCREEN);
1509 tclearregion(0, 0, term.col-1,
1512 if (set ^ alt) /* set is always 1 or 0 */
1518 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1520 case 2004: /* 2004: bracketed paste mode */
1521 MODBIT(term.mode, set, MODE_BRCKTPASTE);
1523 /* Not implemented mouse modes. See comments there. */
1524 case 1001: /* mouse highlight mode; can hang the
1525 terminal by design when implemented. */
1526 case 1005: /* UTF-8 mouse mode; will confuse
1527 applications not supporting UTF-8
1529 case 1015: /* urxvt mangled mouse mode; incompatible
1530 and can be mistaken for other control
1534 "erresc: unknown private set/reset mode %d\n",
1540 case 0: /* Error (IGNORED) */
1542 case 2: /* KAM -- keyboard action */
1543 MODBIT(term.mode, set, MODE_KBDLOCK);
1545 case 4: /* IRM -- Insertion-replacement */
1546 MODBIT(term.mode, set, MODE_INSERT);
1548 case 12: /* SRM -- Send/Receive */
1549 MODBIT(term.mode, !set, MODE_ECHO);
1551 case 20: /* LNM -- Linefeed/new line */
1552 MODBIT(term.mode, set, MODE_CRLF);
1556 "erresc: unknown set/reset mode %d\n",
1570 switch (csiescseq.mode[0]) {
1573 fprintf(stderr, "erresc: unknown csi ");
1577 case '@': /* ICH -- Insert <n> blank char */
1578 DEFAULT(csiescseq.arg[0], 1);
1579 tinsertblank(csiescseq.arg[0]);
1581 case 'A': /* CUU -- Cursor <n> Up */
1582 DEFAULT(csiescseq.arg[0], 1);
1583 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
1585 case 'B': /* CUD -- Cursor <n> Down */
1586 case 'e': /* VPR --Cursor <n> Down */
1587 DEFAULT(csiescseq.arg[0], 1);
1588 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
1590 case 'i': /* MC -- Media Copy */
1591 switch (csiescseq.arg[0]) {
1596 tdumpline(term.c.y);
1602 term.mode &= ~MODE_PRINT;
1605 term.mode |= MODE_PRINT;
1609 case 'c': /* DA -- Device Attributes */
1610 if (csiescseq.arg[0] == 0)
1611 ttywrite(vtiden, sizeof(vtiden) - 1);
1613 case 'C': /* CUF -- Cursor <n> Forward */
1614 case 'a': /* HPR -- Cursor <n> Forward */
1615 DEFAULT(csiescseq.arg[0], 1);
1616 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
1618 case 'D': /* CUB -- Cursor <n> Backward */
1619 DEFAULT(csiescseq.arg[0], 1);
1620 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
1622 case 'E': /* CNL -- Cursor <n> Down and first col */
1623 DEFAULT(csiescseq.arg[0], 1);
1624 tmoveto(0, term.c.y+csiescseq.arg[0]);
1626 case 'F': /* CPL -- Cursor <n> Up and first col */
1627 DEFAULT(csiescseq.arg[0], 1);
1628 tmoveto(0, term.c.y-csiescseq.arg[0]);
1630 case 'g': /* TBC -- Tabulation clear */
1631 switch (csiescseq.arg[0]) {
1632 case 0: /* clear current tab stop */
1633 term.tabs[term.c.x] = 0;
1635 case 3: /* clear all the tabs */
1636 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1642 case 'G': /* CHA -- Move to <col> */
1644 DEFAULT(csiescseq.arg[0], 1);
1645 tmoveto(csiescseq.arg[0]-1, term.c.y);
1647 case 'H': /* CUP -- Move to <row> <col> */
1649 DEFAULT(csiescseq.arg[0], 1);
1650 DEFAULT(csiescseq.arg[1], 1);
1651 tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
1653 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
1654 DEFAULT(csiescseq.arg[0], 1);
1655 tputtab(csiescseq.arg[0]);
1657 case 'J': /* ED -- Clear screen */
1659 switch (csiescseq.arg[0]) {
1661 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1662 if (term.c.y < term.row-1) {
1663 tclearregion(0, term.c.y+1, term.col-1,
1669 tclearregion(0, 0, term.col-1, term.c.y-1);
1670 tclearregion(0, term.c.y, term.c.x, term.c.y);
1673 tclearregion(0, 0, term.col-1, term.row-1);
1679 case 'K': /* EL -- Clear line */
1680 switch (csiescseq.arg[0]) {
1682 tclearregion(term.c.x, term.c.y, term.col-1,
1686 tclearregion(0, term.c.y, term.c.x, term.c.y);
1689 tclearregion(0, term.c.y, term.col-1, term.c.y);
1693 case 'S': /* SU -- Scroll <n> line up */
1694 DEFAULT(csiescseq.arg[0], 1);
1695 tscrollup(term.top, csiescseq.arg[0]);
1697 case 'T': /* SD -- Scroll <n> line down */
1698 DEFAULT(csiescseq.arg[0], 1);
1699 tscrolldown(term.top, csiescseq.arg[0]);
1701 case 'L': /* IL -- Insert <n> blank lines */
1702 DEFAULT(csiescseq.arg[0], 1);
1703 tinsertblankline(csiescseq.arg[0]);
1705 case 'l': /* RM -- Reset Mode */
1706 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
1708 case 'M': /* DL -- Delete <n> lines */
1709 DEFAULT(csiescseq.arg[0], 1);
1710 tdeleteline(csiescseq.arg[0]);
1712 case 'X': /* ECH -- Erase <n> char */
1713 DEFAULT(csiescseq.arg[0], 1);
1714 tclearregion(term.c.x, term.c.y,
1715 term.c.x + csiescseq.arg[0] - 1, term.c.y);
1717 case 'P': /* DCH -- Delete <n> char */
1718 DEFAULT(csiescseq.arg[0], 1);
1719 tdeletechar(csiescseq.arg[0]);
1721 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
1722 DEFAULT(csiescseq.arg[0], 1);
1723 tputtab(-csiescseq.arg[0]);
1725 case 'd': /* VPA -- Move to <row> */
1726 DEFAULT(csiescseq.arg[0], 1);
1727 tmoveato(term.c.x, csiescseq.arg[0]-1);
1729 case 'h': /* SM -- Set terminal mode */
1730 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
1732 case 'm': /* SGR -- Terminal attribute (color) */
1733 tsetattr(csiescseq.arg, csiescseq.narg);
1735 case 'n': /* DSR – Device Status Report (cursor position) */
1736 if (csiescseq.arg[0] == 6) {
1737 len = snprintf(buf, sizeof(buf),"\033[%i;%iR",
1738 term.c.y+1, term.c.x+1);
1742 case 'r': /* DECSTBM -- Set Scrolling Region */
1743 if (csiescseq.priv) {
1746 DEFAULT(csiescseq.arg[0], 1);
1747 DEFAULT(csiescseq.arg[1], term.row);
1748 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
1752 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
1753 tcursor(CURSOR_SAVE);
1755 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
1756 tcursor(CURSOR_LOAD);
1759 switch (csiescseq.mode[1]) {
1760 case 'q': /* DECSCUSR -- Set Cursor Style */
1761 DEFAULT(csiescseq.arg[0], 1);
1762 if (!BETWEEN(csiescseq.arg[0], 0, 6)) {
1765 win.cursor = csiescseq.arg[0];
1780 fprintf(stderr, "ESC[");
1781 for (i = 0; i < csiescseq.len; i++) {
1782 c = csiescseq.buf[i] & 0xff;
1785 } else if (c == '\n') {
1786 fprintf(stderr, "(\\n)");
1787 } else if (c == '\r') {
1788 fprintf(stderr, "(\\r)");
1789 } else if (c == 0x1b) {
1790 fprintf(stderr, "(\\e)");
1792 fprintf(stderr, "(%02x)", c);
1801 memset(&csiescseq, 0, sizeof(csiescseq));
1810 term.esc &= ~(ESC_STR_END|ESC_STR);
1812 par = (narg = strescseq.narg) ? atoi(strescseq.args[0]) : 0;
1814 switch (strescseq.type) {
1815 case ']': /* OSC -- Operating System Command */
1821 xsettitle(strescseq.args[1]);
1823 case 4: /* color set */
1826 p = strescseq.args[2];
1828 case 104: /* color reset, here p = NULL */
1829 j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
1830 if (xsetcolorname(j, p)) {
1831 fprintf(stderr, "erresc: invalid color %s\n", p);
1834 * TODO if defaultbg color is changed, borders
1842 case 'k': /* old title set compatibility */
1843 xsettitle(strescseq.args[0]);
1845 case 'P': /* DCS -- Device Control String */
1846 term.mode |= ESC_DCS;
1847 case '_': /* APC -- Application Program Command */
1848 case '^': /* PM -- Privacy Message */
1852 fprintf(stderr, "erresc: unknown str ");
1860 char *p = strescseq.buf;
1863 strescseq.buf[strescseq.len] = '\0';
1868 while (strescseq.narg < STR_ARG_SIZ) {
1869 strescseq.args[strescseq.narg++] = p;
1870 while ((c = *p) != ';' && c != '\0')
1884 fprintf(stderr, "ESC%c", strescseq.type);
1885 for (i = 0; i < strescseq.len; i++) {
1886 c = strescseq.buf[i] & 0xff;
1890 } else if (isprint(c)) {
1892 } else if (c == '\n') {
1893 fprintf(stderr, "(\\n)");
1894 } else if (c == '\r') {
1895 fprintf(stderr, "(\\r)");
1896 } else if (c == 0x1b) {
1897 fprintf(stderr, "(\\e)");
1899 fprintf(stderr, "(%02x)", c);
1902 fprintf(stderr, "ESC\\\n");
1908 memset(&strescseq, 0, sizeof(strescseq));
1912 sendbreak(const Arg *arg)
1914 if (tcsendbreak(cmdfd, 0))
1915 perror("Error sending break");
1919 tprinter(char *s, size_t len)
1921 if (iofd != -1 && xwrite(iofd, s, len) < 0) {
1922 fprintf(stderr, "Error writing in %s:%s\n",
1923 opt_io, strerror(errno));
1930 iso14755(const Arg *arg)
1932 unsigned long id = xwinid();
1933 char cmd[sizeof(ISO14755CMD) + NUMMAXLEN(id)];
1935 char *us, *e, codepoint[9], uc[UTF_SIZ];
1936 unsigned long utf32;
1938 snprintf(cmd, sizeof(cmd), ISO14755CMD, id);
1939 if (!(p = popen(cmd, "r")))
1942 us = fgets(codepoint, sizeof(codepoint), p);
1945 if (!us || *us == '\0' || *us == '-' || strlen(us) > 7)
1947 if ((utf32 = strtoul(us, &e, 16)) == ULONG_MAX ||
1948 (*e != '\n' && *e != '\0'))
1951 ttysend(uc, utf8encode(utf32, uc));
1955 toggleprinter(const Arg *arg)
1957 term.mode ^= MODE_PRINT;
1961 printscreen(const Arg *arg)
1967 printsel(const Arg *arg)
1977 if ((ptr = getsel())) {
1978 tprinter(ptr, strlen(ptr));
1989 bp = &term.line[n][0];
1990 end = &bp[MIN(tlinelen(n), term.col) - 1];
1991 if (bp != end || bp->u != ' ') {
1992 for ( ;bp <= end; ++bp)
1993 tprinter(buf, utf8encode(bp->u, buf));
2003 for (i = 0; i < term.row; ++i)
2013 while (x < term.col && n--)
2014 for (++x; x < term.col && !term.tabs[x]; ++x)
2017 while (x > 0 && n++)
2018 for (--x; x > 0 && !term.tabs[x]; --x)
2021 term.c.x = LIMIT(x, 0, term.col-1);
2027 if (ISCONTROL(u)) { /* control code */
2032 } else if (u != '\n' && u != '\r' && u != '\t') {
2041 tdefutf8(char ascii)
2044 term.mode |= MODE_UTF8;
2045 else if (ascii == '@')
2046 term.mode &= ~MODE_UTF8;
2050 tdeftran(char ascii)
2052 static char cs[] = "0B";
2053 static int vcs[] = {CS_GRAPHIC0, CS_USA};
2056 if ((p = strchr(cs, ascii)) == NULL) {
2057 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
2059 term.trantbl[term.icharset] = vcs[p - cs];
2068 if (c == '8') { /* DEC screen alignment test. */
2069 for (x = 0; x < term.col; ++x) {
2070 for (y = 0; y < term.row; ++y)
2071 tsetchar('E', &term.c.attr, x, y);
2077 tstrsequence(uchar c)
2082 case 0x90: /* DCS -- Device Control String */
2084 term.esc |= ESC_DCS;
2086 case 0x9f: /* APC -- Application Program Command */
2089 case 0x9e: /* PM -- Privacy Message */
2092 case 0x9d: /* OSC -- Operating System Command */
2097 term.esc |= ESC_STR;
2101 tcontrolcode(uchar ascii)
2108 tmoveto(term.c.x-1, term.c.y);
2111 tmoveto(0, term.c.y);
2116 /* go to first col if the mode is set */
2117 tnewline(IS_SET(MODE_CRLF));
2119 case '\a': /* BEL */
2120 if (term.esc & ESC_STR_END) {
2121 /* backwards compatibility to xterm */
2124 if (!(win.state & WIN_FOCUSED))
2130 case '\033': /* ESC */
2132 term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST);
2133 term.esc |= ESC_START;
2135 case '\016': /* SO (LS1 -- Locking shift 1) */
2136 case '\017': /* SI (LS0 -- Locking shift 0) */
2137 term.charset = 1 - (ascii - '\016');
2139 case '\032': /* SUB */
2140 tsetchar('?', &term.c.attr, term.c.x, term.c.y);
2141 case '\030': /* CAN */
2144 case '\005': /* ENQ (IGNORED) */
2145 case '\000': /* NUL (IGNORED) */
2146 case '\021': /* XON (IGNORED) */
2147 case '\023': /* XOFF (IGNORED) */
2148 case 0177: /* DEL (IGNORED) */
2150 case 0x80: /* TODO: PAD */
2151 case 0x81: /* TODO: HOP */
2152 case 0x82: /* TODO: BPH */
2153 case 0x83: /* TODO: NBH */
2154 case 0x84: /* TODO: IND */
2156 case 0x85: /* NEL -- Next line */
2157 tnewline(1); /* always go to first col */
2159 case 0x86: /* TODO: SSA */
2160 case 0x87: /* TODO: ESA */
2162 case 0x88: /* HTS -- Horizontal tab stop */
2163 term.tabs[term.c.x] = 1;
2165 case 0x89: /* TODO: HTJ */
2166 case 0x8a: /* TODO: VTS */
2167 case 0x8b: /* TODO: PLD */
2168 case 0x8c: /* TODO: PLU */
2169 case 0x8d: /* TODO: RI */
2170 case 0x8e: /* TODO: SS2 */
2171 case 0x8f: /* TODO: SS3 */
2172 case 0x91: /* TODO: PU1 */
2173 case 0x92: /* TODO: PU2 */
2174 case 0x93: /* TODO: STS */
2175 case 0x94: /* TODO: CCH */
2176 case 0x95: /* TODO: MW */
2177 case 0x96: /* TODO: SPA */
2178 case 0x97: /* TODO: EPA */
2179 case 0x98: /* TODO: SOS */
2180 case 0x99: /* TODO: SGCI */
2182 case 0x9a: /* DECID -- Identify Terminal */
2183 ttywrite(vtiden, sizeof(vtiden) - 1);
2185 case 0x9b: /* TODO: CSI */
2186 case 0x9c: /* TODO: ST */
2188 case 0x90: /* DCS -- Device Control String */
2189 case 0x9d: /* OSC -- Operating System Command */
2190 case 0x9e: /* PM -- Privacy Message */
2191 case 0x9f: /* APC -- Application Program Command */
2192 tstrsequence(ascii);
2195 /* only CAN, SUB, \a and C1 chars interrupt a sequence */
2196 term.esc &= ~(ESC_STR_END|ESC_STR);
2200 * returns 1 when the sequence is finished and it hasn't to read
2201 * more characters for this sequence, otherwise 0
2204 eschandle(uchar ascii)
2208 term.esc |= ESC_CSI;
2211 term.esc |= ESC_TEST;
2214 term.esc |= ESC_UTF8;
2216 case 'P': /* DCS -- Device Control String */
2217 case '_': /* APC -- Application Program Command */
2218 case '^': /* PM -- Privacy Message */
2219 case ']': /* OSC -- Operating System Command */
2220 case 'k': /* old title set compatibility */
2221 tstrsequence(ascii);
2223 case 'n': /* LS2 -- Locking shift 2 */
2224 case 'o': /* LS3 -- Locking shift 3 */
2225 term.charset = 2 + (ascii - 'n');
2227 case '(': /* GZD4 -- set primary charset G0 */
2228 case ')': /* G1D4 -- set secondary charset G1 */
2229 case '*': /* G2D4 -- set tertiary charset G2 */
2230 case '+': /* G3D4 -- set quaternary charset G3 */
2231 term.icharset = ascii - '(';
2232 term.esc |= ESC_ALTCHARSET;
2234 case 'D': /* IND -- Linefeed */
2235 if (term.c.y == term.bot) {
2236 tscrollup(term.top, 1);
2238 tmoveto(term.c.x, term.c.y+1);
2241 case 'E': /* NEL -- Next line */
2242 tnewline(1); /* always go to first col */
2244 case 'H': /* HTS -- Horizontal tab stop */
2245 term.tabs[term.c.x] = 1;
2247 case 'M': /* RI -- Reverse index */
2248 if (term.c.y == term.top) {
2249 tscrolldown(term.top, 1);
2251 tmoveto(term.c.x, term.c.y-1);
2254 case 'Z': /* DECID -- Identify Terminal */
2255 ttywrite(vtiden, sizeof(vtiden) - 1);
2257 case 'c': /* RIS -- Reset to inital state */
2262 case '=': /* DECPAM -- Application keypad */
2263 term.mode |= MODE_APPKEYPAD;
2265 case '>': /* DECPNM -- Normal keypad */
2266 term.mode &= ~MODE_APPKEYPAD;
2268 case '7': /* DECSC -- Save Cursor */
2269 tcursor(CURSOR_SAVE);
2271 case '8': /* DECRC -- Restore Cursor */
2272 tcursor(CURSOR_LOAD);
2274 case '\\': /* ST -- String Terminator */
2275 if (term.esc & ESC_STR_END)
2279 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2280 (uchar) ascii, isprint(ascii)? ascii:'.');
2294 control = ISCONTROL(u);
2295 if (!IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) {
2299 len = utf8encode(u, c);
2300 if (!control && (width = wcwidth(u)) == -1) {
2301 memcpy(c, "\357\277\275", 4); /* UTF_INVALID */
2306 if (IS_SET(MODE_PRINT))
2310 * STR sequence must be checked before anything else
2311 * because it uses all following characters until it
2312 * receives a ESC, a SUB, a ST or any other C1 control
2315 if (term.esc & ESC_STR) {
2316 if (u == '\a' || u == 030 || u == 032 || u == 033 ||
2318 term.esc &= ~(ESC_START|ESC_STR|ESC_DCS);
2319 if (IS_SET(MODE_SIXEL)) {
2320 /* TODO: render sixel */;
2321 term.mode &= ~MODE_SIXEL;
2324 term.esc |= ESC_STR_END;
2325 goto check_control_code;
2329 if (IS_SET(MODE_SIXEL)) {
2330 /* TODO: implement sixel mode */
2333 if (term.esc&ESC_DCS && strescseq.len == 0 && u == 'q')
2334 term.mode |= MODE_SIXEL;
2336 if (strescseq.len+len >= sizeof(strescseq.buf)-1) {
2338 * Here is a bug in terminals. If the user never sends
2339 * some code to stop the str or esc command, then st
2340 * will stop responding. But this is better than
2341 * silently failing with unknown characters. At least
2342 * then users will report back.
2344 * In the case users ever get fixed, here is the code:
2353 memmove(&strescseq.buf[strescseq.len], c, len);
2354 strescseq.len += len;
2360 * Actions of control codes must be performed as soon they arrive
2361 * because they can be embedded inside a control sequence, and
2362 * they must not cause conflicts with sequences.
2367 * control codes are not shown ever
2370 } else if (term.esc & ESC_START) {
2371 if (term.esc & ESC_CSI) {
2372 csiescseq.buf[csiescseq.len++] = u;
2373 if (BETWEEN(u, 0x40, 0x7E)
2374 || csiescseq.len >= \
2375 sizeof(csiescseq.buf)-1) {
2381 } else if (term.esc & ESC_UTF8) {
2383 } else if (term.esc & ESC_ALTCHARSET) {
2385 } else if (term.esc & ESC_TEST) {
2390 /* sequence already finished */
2394 * All characters which form part of a sequence are not
2399 if (sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
2402 gp = &term.line[term.c.y][term.c.x];
2403 if (IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
2404 gp->mode |= ATTR_WRAP;
2406 gp = &term.line[term.c.y][term.c.x];
2409 if (IS_SET(MODE_INSERT) && term.c.x+width < term.col)
2410 memmove(gp+width, gp, (term.col - term.c.x - width) * sizeof(Glyph));
2412 if (term.c.x+width > term.col) {
2414 gp = &term.line[term.c.y][term.c.x];
2417 tsetchar(u, &term.c.attr, term.c.x, term.c.y);
2420 gp->mode |= ATTR_WIDE;
2421 if (term.c.x+1 < term.col) {
2423 gp[1].mode = ATTR_WDUMMY;
2426 if (term.c.x+width < term.col) {
2427 tmoveto(term.c.x+width, term.c.y);
2429 term.c.state |= CURSOR_WRAPNEXT;
2434 tresize(int col, int row)
2437 int minrow = MIN(row, term.row);
2438 int mincol = MIN(col, term.col);
2442 if (col < 1 || row < 1) {
2444 "tresize: error resizing to %dx%d\n", col, row);
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 <= term.c.y - row; i++) {
2457 /* ensure that both src and dst are not NULL */
2459 memmove(term.line, term.line + i, row * sizeof(Line));
2460 memmove(term.alt, term.alt + i, row * sizeof(Line));
2462 for (i += row; i < term.row; i++) {
2467 /* resize to new width */
2468 term.specbuf = xrealloc(term.specbuf, col * sizeof(GlyphFontSpec));
2470 /* resize to new height */
2471 term.line = xrealloc(term.line, row * sizeof(Line));
2472 term.alt = xrealloc(term.alt, row * sizeof(Line));
2473 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
2474 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
2476 /* resize each row to new width, zero-pad if needed */
2477 for (i = 0; i < minrow; i++) {
2478 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
2479 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
2482 /* allocate any new rows */
2483 for (/* i == minrow */; i < row; i++) {
2484 term.line[i] = xmalloc(col * sizeof(Glyph));
2485 term.alt[i] = xmalloc(col * sizeof(Glyph));
2487 if (col > term.col) {
2488 bp = term.tabs + term.col;
2490 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
2491 while (--bp > term.tabs && !*bp)
2493 for (bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
2496 /* update terminal size */
2499 /* reset scrolling region */
2500 tsetscroll(0, row-1);
2501 /* make use of the LIMIT in tmoveto */
2502 tmoveto(term.c.x, term.c.y);
2503 /* Clearing both screens (it makes dirty all lines) */
2505 for (i = 0; i < 2; i++) {
2506 if (mincol < col && 0 < minrow) {
2507 tclearregion(mincol, 0, col - 1, minrow - 1);
2509 if (0 < col && minrow < row) {
2510 tclearregion(0, minrow, col - 1, row - 1);
2513 tcursor(CURSOR_LOAD);
2519 zoom(const Arg *arg)
2523 larg.f = usedfontsize + arg->f;
2528 zoomabs(const Arg *arg)
2531 xloadfonts(usedfont, arg->f);
2539 zoomreset(const Arg *arg)
2543 if (defaultfontsize > 0) {
2544 larg.f = defaultfontsize;
2552 xsettitle(opt_title ? opt_title : "st");
2563 match(uint mask, uint state)
2565 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
2569 numlock(const Arg *dummy)
2575 kmap(KeySym k, uint state)
2580 /* Check for mapped keys out of X11 function keys. */
2581 for (i = 0; i < LEN(mappedkeys); i++) {
2582 if (mappedkeys[i] == k)
2585 if (i == LEN(mappedkeys)) {
2586 if ((k & 0xFFFF) < 0xFD00)
2590 for (kp = key; kp < key + LEN(key); kp++) {
2594 if (!match(kp->mask, state))
2597 if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
2599 if (term.numlock && kp->appkey == 2)
2602 if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
2605 if (IS_SET(MODE_CRLF) ? kp->crlf < 0 : kp->crlf > 0)
2615 cresize(int width, int height)
2624 col = (win.w - 2 * borderpx) / win.cw;
2625 row = (win.h - 2 * borderpx) / win.ch;
2634 die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"
2635 " [-n name] [-o file]\n"
2636 " [-T title] [-t title] [-w windowid]"
2637 " [[-e] command [args ...]]\n"
2638 " %s [-aiv] [-c class] [-f font] [-g geometry]"
2639 " [-n name] [-o file]\n"
2640 " [-T title] [-t title] [-w windowid] -l line"
2641 " [stty_args ...]\n", argv0, argv0);