/* See LICENSE for license details. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "arg.h" char *argv0; #define Glyph Glyph_ #define Font Font_ #if defined(__linux) #include #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__) #include #elif defined(__FreeBSD__) || defined(__DragonFly__) #include #endif /* XEMBED messages */ #define XEMBED_FOCUS_IN 4 #define XEMBED_FOCUS_OUT 5 /* Arbitrary sizes */ #define UTF_INVALID 0xFFFD #define UTF_SIZ 4 #define ESC_BUF_SIZ (128*UTF_SIZ) #define ESC_ARG_SIZ 16 #define STR_BUF_SIZ ESC_BUF_SIZ #define STR_ARG_SIZ ESC_ARG_SIZ #define DRAW_BUF_SIZ 20*1024 #define XK_ANY_MOD UINT_MAX #define XK_NO_MOD 0 #define XK_SWITCH_MOD (1<<13) /* macros */ #define MIN(a, b) ((a) < (b) ? (a) : (b)) #define MAX(a, b) ((a) < (b) ? (b) : (a)) #define LEN(a) (sizeof(a) / sizeof(a)[0]) #define DEFAULT(a, b) (a) = (a) ? (a) : (b) #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b)) #define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f) || (c) == '\177') #define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f)) #define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c)) #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x) #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg) #define IS_SET(flag) ((term.mode & (flag)) != 0) #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_nsec-t2.tv_nsec)/1E6) #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit))) #define TRUECOLOR(r,g,b) (1 << 24 | (r) << 16 | (g) << 8 | (b)) #define IS_TRUECOL(x) (1 << 24 & (x)) #define TRUERED(x) (((x) & 0xff0000) >> 8) #define TRUEGREEN(x) (((x) & 0xff00)) #define TRUEBLUE(x) (((x) & 0xff) << 8) enum glyph_attribute { ATTR_NULL = 0, ATTR_BOLD = 1 << 0, ATTR_FAINT = 1 << 1, ATTR_ITALIC = 1 << 2, ATTR_UNDERLINE = 1 << 3, ATTR_BLINK = 1 << 4, ATTR_REVERSE = 1 << 5, ATTR_INVISIBLE = 1 << 6, ATTR_STRUCK = 1 << 7, ATTR_WRAP = 1 << 8, ATTR_WIDE = 1 << 9, ATTR_WDUMMY = 1 << 10, }; enum cursor_movement { CURSOR_SAVE, CURSOR_LOAD }; enum cursor_state { CURSOR_DEFAULT = 0, CURSOR_WRAPNEXT = 1, CURSOR_ORIGIN = 2 }; enum term_mode { MODE_WRAP = 1 << 0, MODE_INSERT = 1 << 1, MODE_APPKEYPAD = 1 << 2, MODE_ALTSCREEN = 1 << 3, MODE_CRLF = 1 << 4, MODE_MOUSEBTN = 1 << 5, MODE_MOUSEMOTION = 1 << 6, MODE_REVERSE = 1 << 7, MODE_KBDLOCK = 1 << 8, MODE_HIDE = 1 << 9, MODE_ECHO = 1 << 10, MODE_APPCURSOR = 1 << 11, MODE_MOUSESGR = 1 << 12, MODE_8BIT = 1 << 13, MODE_BLINK = 1 << 14, MODE_FBLINK = 1 << 15, MODE_FOCUS = 1 << 16, MODE_MOUSEX10 = 1 << 17, MODE_MOUSEMANY = 1 << 18, MODE_BRCKTPASTE = 1 << 19, MODE_PRINT = 1 << 20, MODE_MOUSE = MODE_MOUSEBTN|MODE_MOUSEMOTION|MODE_MOUSEX10\ |MODE_MOUSEMANY, }; enum charset { CS_GRAPHIC0, CS_GRAPHIC1, CS_UK, CS_USA, CS_MULTI, CS_GER, CS_FIN }; enum escape_state { ESC_START = 1, ESC_CSI = 2, ESC_STR = 4, /* DCS, OSC, PM, APC */ ESC_ALTCHARSET = 8, ESC_STR_END = 16, /* a final string was encountered */ ESC_TEST = 32, /* Enter in test mode */ }; enum window_state { WIN_VISIBLE = 1, WIN_REDRAW = 2, WIN_FOCUSED = 4 }; enum selection_type { SEL_REGULAR = 1, SEL_RECTANGULAR = 2 }; enum selection_snap { SNAP_WORD = 1, SNAP_LINE = 2 }; typedef unsigned char uchar; typedef unsigned int uint; typedef unsigned long ulong; typedef unsigned short ushort; typedef XftDraw *Draw; typedef XftColor Color; typedef struct { char c[UTF_SIZ]; /* character code */ ushort mode; /* attribute flags */ uint32_t fg; /* foreground */ uint32_t bg; /* background */ } Glyph; typedef Glyph *Line; typedef struct { Glyph attr; /* current char attributes */ int x; int y; char state; } TCursor; /* CSI Escape sequence structs */ /* ESC '[' [[ [] [;]] []] */ typedef struct { char buf[ESC_BUF_SIZ]; /* raw string */ int len; /* raw string length */ char priv; int arg[ESC_ARG_SIZ]; int narg; /* nb of args */ char mode[2]; } CSIEscape; /* STR Escape sequence structs */ /* ESC type [[ [] [;]] ] ESC '\' */ typedef struct { char type; /* ESC type ... */ char buf[STR_BUF_SIZ]; /* raw string */ int len; /* raw string length */ char *args[STR_ARG_SIZ]; int narg; /* nb of args */ } STREscape; /* Internal representation of the screen */ typedef struct { int row; /* nb row */ int col; /* nb col */ Line *line; /* screen */ Line *alt; /* alternate screen */ bool *dirty; /* dirtyness of lines */ TCursor c; /* cursor */ int top; /* top scroll limit */ int bot; /* bottom scroll limit */ int mode; /* terminal mode flags */ int esc; /* escape state flags */ char trantbl[4]; /* charset table translation */ int charset; /* current charset */ int icharset; /* selected charset for sequence */ bool numlock; /* lock numbers in keyboard */ bool *tabs; } Term; /* Purely graphic info */ typedef struct { Display *dpy; Colormap cmap; Window win; Drawable buf; Atom xembed, wmdeletewin, netwmname, netwmpid; XIM xim; XIC xic; Draw draw; Visual *vis; XSetWindowAttributes attrs; int scr; bool isfixed; /* is fixed geometry? */ int l, t; /* left and top offset */ int gm; /* geometry mask */ int tw, th; /* tty width and height */ int w, h; /* window width and height */ int ch; /* char height */ int cw; /* char width */ char state; /* focus, redraw, visible */ int cursor; /* cursor style */ } XWindow; typedef struct { uint b; uint mask; char *s; } Mousekey; typedef struct { KeySym k; uint mask; char *s; /* three valued logic variables: 0 indifferent, 1 on, -1 off */ signed char appkey; /* application keypad */ signed char appcursor; /* application cursor */ signed char crlf; /* crlf mode */ } Key; typedef struct { int mode; int type; int snap; /* * Selection variables: * nb – normalized coordinates of the beginning of the selection * ne – normalized coordinates of the end of the selection * ob – original coordinates of the beginning of the selection * oe – original coordinates of the end of the selection */ struct { int x, y; } nb, ne, ob, oe; char *primary, *clipboard; Atom xtarget; bool alt; struct timespec tclick1; struct timespec tclick2; } Selection; typedef union { int i; uint ui; float f; const void *v; } Arg; typedef struct { uint mod; KeySym keysym; void (*func)(const Arg *); const Arg arg; } Shortcut; /* function definitions used in config.h */ static void clipcopy(const Arg *); static void clippaste(const Arg *); static void numlock(const Arg *); static void selpaste(const Arg *); static void xzoom(const Arg *); static void xzoomabs(const Arg *); static void xzoomreset(const Arg *); static void printsel(const Arg *); static void printscreen(const Arg *) ; static void toggleprinter(const Arg *); /* Config.h for applying patches and the configuration. */ #include "config.h" /* Font structure */ typedef struct { int height; int width; int ascent; int descent; short lbearing; short rbearing; XftFont *match; FcFontSet *set; FcPattern *pattern; } Font; /* Drawing Context */ typedef struct { Color col[MAX(LEN(colorname), 256)]; Font font, bfont, ifont, ibfont; GC gc; } DC; static void die(const char *, ...); static void draw(void); static void redraw(void); static void drawregion(int, int, int, int); static void execsh(void); static void sigchld(int); static void run(void); static void csidump(void); static void csihandle(void); static void csiparse(void); static void csireset(void); static int eschandle(uchar); static void strdump(void); static void strhandle(void); static void strparse(void); static void strreset(void); static int tattrset(int); static void tprinter(char *, size_t); static void tdumpsel(void); static void tdumpline(int); static void tdump(void); static void tclearregion(int, int, int, int); static void tcursor(int); static void tdeletechar(int); static void tdeleteline(int); static void tinsertblank(int); static void tinsertblankline(int); static int tlinelen(int); static void tmoveto(int, int); static void tmoveato(int, int); static void tnew(int, int); static void tnewline(int); static void tputtab(int); static void tputc(char *, int); static void treset(void); static void tresize(int, int); static void tscrollup(int, int); static void tscrolldown(int, int); static void tsetattr(int *, int); static void tsetchar(char *, Glyph *, int, int); static void tsetscroll(int, int); static void tswapscreen(void); static void tsetdirt(int, int); static void tsetdirtattr(int); static void tsetmode(bool, bool, int *, int); static void tfulldirt(void); static void techo(char *, int); static void tcontrolcode(uchar ); static void tdectest(char ); static int32_t tdefcolor(int *, int *, int); static void tdeftran(char); static inline bool match(uint, uint); static void ttynew(void); static void ttyread(void); static void ttyresize(void); static void ttysend(char *, size_t); static void ttywrite(const char *, size_t); static void tstrsequence(uchar); static inline ushort sixd_to_16bit(int); static void xdraws(char *, Glyph, int, int, int, int); static void xhints(void); static void xclear(int, int, int, int); static void xdrawcursor(void); static void xinit(void); static void xloadcols(void); static int xsetcolorname(int, const char *); static int xgeommasktogravity(int); static int xloadfont(Font *, FcPattern *); static void xloadfonts(char *, double); static void xsettitle(char *); static void xresettitle(void); static void xsetpointermotion(int); static void xseturgency(int); static void xsetsel(char *, Time); static void xtermclear(int, int, int, int); static void xunloadfont(Font *); static void xunloadfonts(void); static void xresize(int, int); static void expose(XEvent *); static void visibility(XEvent *); static void unmap(XEvent *); static char *kmap(KeySym, uint); static void kpress(XEvent *); static void cmessage(XEvent *); static void cresize(int, int); static void resize(XEvent *); static void focus(XEvent *); static void brelease(XEvent *); static void bpress(XEvent *); static void bmotion(XEvent *); static void selnotify(XEvent *); static void selclear(XEvent *); static void selrequest(XEvent *); static void selinit(void); static void selnormalize(void); static inline bool selected(int, int); static char *getsel(void); static void selcopy(Time); static void selscroll(int, int); static void selsnap(int, int *, int *, int); static int x2col(int); static int y2row(int); static void getbuttoninfo(XEvent *); static void mousereport(XEvent *); static size_t utf8decode(char *, long *, size_t); static long utf8decodebyte(char, size_t *); static size_t utf8encode(long, char *, size_t); static char utf8encodebyte(long, size_t); static size_t utf8len(char *); static size_t utf8validate(long *, size_t); static ssize_t xwrite(int, const char *, size_t); static void *xmalloc(size_t); static void *xrealloc(void *, size_t); static char *xstrdup(char *); static void usage(void); static void (*handler[LASTEvent])(XEvent *) = { [KeyPress] = kpress, [ClientMessage] = cmessage, [ConfigureNotify] = resize, [VisibilityNotify] = visibility, [UnmapNotify] = unmap, [Expose] = expose, [FocusIn] = focus, [FocusOut] = focus, [MotionNotify] = bmotion, [ButtonPress] = bpress, [ButtonRelease] = brelease, /* * Uncomment if you want the selection to disappear when you select something * different in another window. */ /* [SelectionClear] = selclear, */ [SelectionNotify] = selnotify, [SelectionRequest] = selrequest, }; /* Globals */ static DC dc; static XWindow xw; static Term term; static CSIEscape csiescseq; static STREscape strescseq; static int cmdfd; static pid_t pid; static Selection sel; static int iofd = STDOUT_FILENO; static char **opt_cmd = NULL; static char *opt_io = NULL; static char *opt_title = NULL; static char *opt_embed = NULL; static char *opt_class = NULL; static char *opt_font = NULL; static int oldbutton = 3; /* button event on startup: 3 = release */ static char *usedfont = NULL; static double usedfontsize = 0; static double defaultfontsize = 0; static uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0}; static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8}; static long utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000}; static long utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF}; /* Font Ring Cache */ enum { FRC_NORMAL, FRC_ITALIC, FRC_BOLD, FRC_ITALICBOLD }; typedef struct { XftFont *font; int flags; long unicodep; } Fontcache; /* Fontcache is an array now. A new font will be appended to the array. */ static Fontcache frc[16]; static int frclen = 0; ssize_t xwrite(int fd, const char *s, size_t len) { size_t aux = len; while(len > 0) { ssize_t r = write(fd, s, len); if(r < 0) return r; len -= r; s += r; } return aux; } void * xmalloc(size_t len) { void *p = malloc(len); if(!p) die("Out of memory\n"); return p; } void * xrealloc(void *p, size_t len) { if((p = realloc(p, len)) == NULL) die("Out of memory\n"); return p; } char * xstrdup(char *s) { if((s = strdup(s)) == NULL) die("Out of memory\n"); return s; } size_t utf8decode(char *c, long *u, size_t clen) { size_t i, j, len, type; long udecoded; *u = UTF_INVALID; if(!clen) return 0; udecoded = utf8decodebyte(c[0], &len); if(!BETWEEN(len, 1, UTF_SIZ)) return 1; for(i = 1, j = 1; i < clen && j < len; ++i, ++j) { udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type); if(type != 0) return j; } if(j < len) return 0; *u = udecoded; utf8validate(u, len); return len; } long utf8decodebyte(char c, size_t *i) { for(*i = 0; *i < LEN(utfmask); ++(*i)) if(((uchar)c & utfmask[*i]) == utfbyte[*i]) return (uchar)c & ~utfmask[*i]; return 0; } size_t utf8encode(long u, char *c, size_t clen) { size_t len, i; len = utf8validate(&u, 0); if(clen < len) return 0; for(i = len - 1; i != 0; --i) { c[i] = utf8encodebyte(u, 0); u >>= 6; } c[0] = utf8encodebyte(u, len); return len; } char utf8encodebyte(long u, size_t i) { return utfbyte[i] | (u & ~utfmask[i]); } size_t utf8len(char *c) { return utf8decode(c, &(long){0}, UTF_SIZ); } size_t utf8validate(long *u, size_t i) { if(!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF)) *u = UTF_INVALID; for(i = 1; *u > utfmax[i]; ++i) ; return i; } void selinit(void) { memset(&sel.tclick1, 0, sizeof(sel.tclick1)); memset(&sel.tclick2, 0, sizeof(sel.tclick2)); sel.mode = 0; sel.ob.x = -1; sel.primary = NULL; sel.clipboard = NULL; sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0); if(sel.xtarget == None) sel.xtarget = XA_STRING; } int x2col(int x) { x -= borderpx; x /= xw.cw; return LIMIT(x, 0, term.col-1); } int y2row(int y) { y -= borderpx; y /= xw.ch; return LIMIT(y, 0, term.row-1); } int tlinelen(int y) { int i = term.col; if(term.line[y][i - 1].mode & ATTR_WRAP) return i; while(i > 0 && term.line[y][i - 1].c[0] == ' ') --i; return i; } void selnormalize(void) { int i; if(sel.ob.y == sel.oe.y || sel.type == SEL_RECTANGULAR) { sel.nb.x = MIN(sel.ob.x, sel.oe.x); sel.ne.x = MAX(sel.ob.x, sel.oe.x); } else { sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x; sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x; } sel.nb.y = MIN(sel.ob.y, sel.oe.y); sel.ne.y = MAX(sel.ob.y, sel.oe.y); selsnap(sel.snap, &sel.nb.x, &sel.nb.y, -1); selsnap(sel.snap, &sel.ne.x, &sel.ne.y, +1); /* expand selection over line breaks */ if (sel.type == SEL_RECTANGULAR) return; i = tlinelen(sel.nb.y); if (i < sel.nb.x) sel.nb.x = i; if (tlinelen(sel.ne.y) <= sel.ne.x) sel.ne.x = term.col - 1; } bool selected(int x, int y) { if(sel.type == SEL_RECTANGULAR) return BETWEEN(y, sel.nb.y, sel.ne.y) && BETWEEN(x, sel.nb.x, sel.ne.x); return BETWEEN(y, sel.nb.y, sel.ne.y) && (y != sel.nb.y || x >= sel.nb.x) && (y != sel.ne.y || x <= sel.ne.x); } void selsnap(int mode, int *x, int *y, int direction) { int newx, newy, xt, yt; bool delim, prevdelim; Glyph *gp, *prevgp; switch(mode) { case SNAP_WORD: /* * Snap around if the word wraps around at the end or * beginning of a line. */ prevgp = &term.line[*y][*x]; prevdelim = strchr(worddelimiters, prevgp->c[0]) != NULL; for(;;) { newx = *x + direction; newy = *y; if(!BETWEEN(newx, 0, term.col - 1)) { newy += direction; newx = (newx + term.col) % term.col; if (!BETWEEN(newy, 0, term.row - 1)) break; if(direction > 0) yt = *y, xt = *x; else yt = newy, xt = newx; if(!(term.line[yt][xt].mode & ATTR_WRAP)) break; } if (newx >= tlinelen(newy)) break; gp = &term.line[newy][newx]; delim = strchr(worddelimiters, gp->c[0]) != NULL; if(!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim || (delim && gp->c[0] != prevgp->c[0]))) break; *x = newx; *y = newy; prevgp = gp; prevdelim = delim; } break; case SNAP_LINE: /* * Snap around if the the previous line or the current one * has set ATTR_WRAP at its end. Then the whole next or * previous line will be selected. */ *x = (direction < 0) ? 0 : term.col - 1; if(direction < 0 && *y > 0) { for(; *y > 0; *y += direction) { if(!(term.line[*y-1][term.col-1].mode & ATTR_WRAP)) { break; } } } else if(direction > 0 && *y < term.row-1) { for(; *y < term.row; *y += direction) { if(!(term.line[*y][term.col-1].mode & ATTR_WRAP)) { break; } } } break; } } void getbuttoninfo(XEvent *e) { int type; uint state = e->xbutton.state & ~(Button1Mask | forceselmod); sel.alt = IS_SET(MODE_ALTSCREEN); sel.oe.x = x2col(e->xbutton.x); sel.oe.y = y2row(e->xbutton.y); selnormalize(); sel.type = SEL_REGULAR; for(type = 1; type < LEN(selmasks); ++type) { if(match(selmasks[type], state)) { sel.type = type; break; } } } void mousereport(XEvent *e) { int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y), button = e->xbutton.button, state = e->xbutton.state, len; char buf[40]; static int ox, oy; /* from urxvt */ if(e->xbutton.type == MotionNotify) { if(x == ox && y == oy) return; if(!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY)) return; /* MOUSE_MOTION: no reporting if no button is pressed */ if(IS_SET(MODE_MOUSEMOTION) && oldbutton == 3) return; button = oldbutton + 32; ox = x; oy = y; } else { if(!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) { button = 3; } else { button -= Button1; if(button >= 3) button += 64 - 3; } if(e->xbutton.type == ButtonPress) { oldbutton = button; ox = x; oy = y; } else if(e->xbutton.type == ButtonRelease) { oldbutton = 3; /* MODE_MOUSEX10: no button release reporting */ if(IS_SET(MODE_MOUSEX10)) return; if (button == 64 || button == 65) return; } } if(!IS_SET(MODE_MOUSEX10)) { button += (state & ShiftMask ? 4 : 0) + (state & Mod4Mask ? 8 : 0) + (state & ControlMask ? 16 : 0); } len = 0; if(IS_SET(MODE_MOUSESGR)) { len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c", button, x+1, y+1, e->xbutton.type == ButtonRelease ? 'm' : 'M'); } else if(x < 223 && y < 223) { len = snprintf(buf, sizeof(buf), "\033[M%c%c%c", 32+button, 32+x+1, 32+y+1); } else { return; } ttywrite(buf, len); } void bpress(XEvent *e) { struct timespec now; Mousekey *mk; if(IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) { mousereport(e); return; } for(mk = mshortcuts; mk < mshortcuts + LEN(mshortcuts); mk++) { if(e->xbutton.button == mk->b && match(mk->mask, e->xbutton.state)) { ttysend(mk->s, strlen(mk->s)); return; } } if(e->xbutton.button == Button1) { clock_gettime(CLOCK_MONOTONIC, &now); /* Clear previous selection, logically and visually. */ selclear(NULL); sel.mode = 1; sel.type = SEL_REGULAR; sel.oe.x = sel.ob.x = x2col(e->xbutton.x); sel.oe.y = sel.ob.y = y2row(e->xbutton.y); /* * If the user clicks below predefined timeouts specific * snapping behaviour is exposed. */ if(TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) { sel.snap = SNAP_LINE; } else if(TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) { sel.snap = SNAP_WORD; } else { sel.snap = 0; } selnormalize(); /* * Draw selection, unless it's regular and we don't want to * make clicks visible */ if(sel.snap != 0) { sel.mode++; tsetdirt(sel.nb.y, sel.ne.y); } sel.tclick2 = sel.tclick1; sel.tclick1 = now; } } char * getsel(void) { char *str, *ptr; int y, bufsize, size, lastx, linelen; Glyph *gp, *last; if(sel.ob.x == -1) return NULL; bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ; ptr = str = xmalloc(bufsize); /* append every set & selected glyph to the selection */ for(y = sel.nb.y; y <= sel.ne.y; y++) { linelen = tlinelen(y); if(sel.type == SEL_RECTANGULAR) { gp = &term.line[y][sel.nb.x]; lastx = sel.ne.x; } else { gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0]; lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1; } last = &term.line[y][MIN(lastx, linelen-1)]; while(last >= gp && last->c[0] == ' ') --last; for( ; gp <= last; ++gp) { if(gp->mode & ATTR_WDUMMY) continue; size = utf8len(gp->c); memcpy(ptr, gp->c, size); ptr += size; } /* * Copy and pasting of line endings is inconsistent * in the inconsistent terminal and GUI world. * The best solution seems like to produce '\n' when * something is copied from st and convert '\n' to * '\r', when something to be pasted is received by * st. * FIXME: Fix the computer world. */ if((y < sel.ne.y || lastx >= linelen) && !(last->mode & ATTR_WRAP)) *ptr++ = '\n'; } *ptr = 0; return str; } void selcopy(Time t) { xsetsel(getsel(), t); } void selnotify(XEvent *e) { ulong nitems, ofs, rem; int format; uchar *data, *last, *repl; Atom type; XSelectionEvent *xsev; ofs = 0; xsev = &e->xselection; if (xsev->property == None) return; do { if(XGetWindowProperty(xw.dpy, xw.win, xsev->property, ofs, BUFSIZ/4, False, AnyPropertyType, &type, &format, &nitems, &rem, &data)) { fprintf(stderr, "Clipboard allocation failed\n"); return; } /* * As seen in getsel: * Line endings are inconsistent in the terminal and GUI world * copy and pasting. When receiving some selection data, * replace all '\n' with '\r'. * FIXME: Fix the computer world. */ repl = data; last = data + nitems * format / 8; while((repl = memchr(repl, '\n', last - repl))) { *repl++ = '\r'; } if(IS_SET(MODE_BRCKTPASTE)) ttywrite("\033[200~", 6); ttysend((char *)data, nitems * format / 8); if(IS_SET(MODE_BRCKTPASTE)) ttywrite("\033[201~", 6); XFree(data); /* number of 32-bit chunks returned */ ofs += nitems * format / 32; } while(rem > 0); } void selpaste(const Arg *dummy) { XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY, xw.win, CurrentTime); } void clipcopy(const Arg *dummy) { Atom clipboard; if(sel.clipboard != NULL) free(sel.clipboard); if(sel.primary != NULL) { sel.clipboard = xstrdup(sel.primary); clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0); XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime); } } void clippaste(const Arg *dummy) { Atom clipboard; clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0); XConvertSelection(xw.dpy, clipboard, sel.xtarget, clipboard, xw.win, CurrentTime); } void selclear(XEvent *e) { if(sel.ob.x == -1) return; sel.ob.x = -1; tsetdirt(sel.nb.y, sel.ne.y); } void selrequest(XEvent *e) { XSelectionRequestEvent *xsre; XSelectionEvent xev; Atom xa_targets, string, clipboard; char *seltext; xsre = (XSelectionRequestEvent *) e; xev.type = SelectionNotify; xev.requestor = xsre->requestor; xev.selection = xsre->selection; xev.target = xsre->target; xev.time = xsre->time; if (xsre->property == None) xsre->property = xsre->target; /* reject */ xev.property = None; xa_targets = XInternAtom(xw.dpy, "TARGETS", 0); if(xsre->target == xa_targets) { /* respond with the supported type */ string = sel.xtarget; XChangeProperty(xsre->display, xsre->requestor, xsre->property, XA_ATOM, 32, PropModeReplace, (uchar *) &string, 1); xev.property = xsre->property; } else if(xsre->target == sel.xtarget || xsre->target == XA_STRING) { /* * xith XA_STRING non ascii characters may be incorrect in the * requestor. It is not our problem, use utf8. */ clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0); if(xsre->selection == XA_PRIMARY) { seltext = sel.primary; } else if(xsre->selection == clipboard) { seltext = sel.clipboard; } else { fprintf(stderr, "Unhandled clipboard selection 0x%lx\n", xsre->selection); return; } if(seltext != NULL) { XChangeProperty(xsre->display, xsre->requestor, xsre->property, xsre->target, 8, PropModeReplace, (uchar *)seltext, strlen(seltext)); xev.property = xsre->property; } } /* all done, send a notification to the listener */ if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev)) fprintf(stderr, "Error sending SelectionNotify event\n"); } void xsetsel(char *str, Time t) { free(sel.primary); sel.primary = str; XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t); if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win) selclear(0); } void brelease(XEvent *e) { if(IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) { mousereport(e); return; } if(e->xbutton.button == Button2) { selpaste(NULL); } else if(e->xbutton.button == Button1) { if(sel.mode < 2) { selclear(NULL); } else { getbuttoninfo(e); selcopy(e->xbutton.time); } sel.mode = 0; tsetdirt(sel.nb.y, sel.ne.y); } } void bmotion(XEvent *e) { int oldey, oldex, oldsby, oldsey; if(IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) { mousereport(e); return; } if(!sel.mode) return; sel.mode++; oldey = sel.oe.y; oldex = sel.oe.x; oldsby = sel.nb.y; oldsey = sel.ne.y; getbuttoninfo(e); if(oldey != sel.oe.y || oldex != sel.oe.x) tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey)); } void die(const char *errstr, ...) { va_list ap; va_start(ap, errstr); vfprintf(stderr, errstr, ap); va_end(ap); exit(EXIT_FAILURE); } void execsh(void) { char **args, *sh, *prog; const struct passwd *pw; char buf[sizeof(long) * 8 + 1]; errno = 0; if((pw = getpwuid(getuid())) == NULL) { if(errno) die("getpwuid:%s\n", strerror(errno)); else die("who are you?\n"); } if (!(sh = getenv("SHELL"))) { sh = (pw->pw_shell[0]) ? pw->pw_shell : shell; } if(opt_cmd) prog = opt_cmd[0]; else if(utmp) prog = utmp; else prog = sh; args = (opt_cmd) ? opt_cmd : (char *[]) {prog, NULL}; snprintf(buf, sizeof(buf), "%lu", xw.win); unsetenv("COLUMNS"); unsetenv("LINES"); unsetenv("TERMCAP"); setenv("LOGNAME", pw->pw_name, 1); setenv("USER", pw->pw_name, 1); setenv("SHELL", sh, 1); setenv("HOME", pw->pw_dir, 1); setenv("TERM", termname, 1); setenv("WINDOWID", buf, 1); signal(SIGCHLD, SIG_DFL); signal(SIGHUP, SIG_DFL); signal(SIGINT, SIG_DFL); signal(SIGQUIT, SIG_DFL); signal(SIGTERM, SIG_DFL); signal(SIGALRM, SIG_DFL); execvp(prog, args); _exit(EXIT_FAILURE); } void sigchld(int a) { int stat, ret; if(waitpid(pid, &stat, 0) < 0) die("Waiting for pid %hd failed: %s\n", pid, strerror(errno)); ret = WIFEXITED(stat) ? WEXITSTATUS(stat) : EXIT_FAILURE; if (ret != EXIT_SUCCESS) die("child finished with error '%d'\n", stat); exit(EXIT_SUCCESS); } void ttynew(void) { int m, s; struct winsize w = {term.row, term.col, 0, 0}; /* seems to work fine on linux, openbsd and freebsd */ if(openpty(&m, &s, NULL, NULL, &w) < 0) die("openpty failed: %s\n", strerror(errno)); switch(pid = fork()) { case -1: die("fork failed\n"); break; case 0: setsid(); /* create a new process group */ dup2(s, STDIN_FILENO); dup2(s, STDOUT_FILENO); dup2(s, STDERR_FILENO); if(ioctl(s, TIOCSCTTY, NULL) < 0) die("ioctl TIOCSCTTY failed: %s\n", strerror(errno)); close(s); close(m); execsh(); break; default: close(s); cmdfd = m; signal(SIGCHLD, sigchld); if(opt_io) { term.mode |= MODE_PRINT; iofd = (!strcmp(opt_io, "-")) ? STDOUT_FILENO : open(opt_io, O_WRONLY | O_CREAT, 0666); if(iofd < 0) { fprintf(stderr, "Error opening %s:%s\n", opt_io, strerror(errno)); } } break; } } void ttyread(void) { static char buf[BUFSIZ]; static int buflen = 0; char *ptr; char s[UTF_SIZ]; int charsize; /* size of utf8 char in bytes */ long unicodep; int ret; /* append read bytes to unprocessed bytes */ if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0) die("Couldn't read from shell: %s\n", strerror(errno)); /* process every complete utf8 char */ buflen += ret; ptr = buf; while((charsize = utf8decode(ptr, &unicodep, buflen))) { utf8encode(unicodep, s, UTF_SIZ); tputc(s, charsize); ptr += charsize; buflen -= charsize; } /* keep any uncomplete utf8 char for the next call */ memmove(buf, ptr, buflen); } void ttywrite(const char *s, size_t n) { if(xwrite(cmdfd, s, n) == -1) die("write error on tty: %s\n", strerror(errno)); } void ttysend(char *s, size_t n) { ttywrite(s, n); if(IS_SET(MODE_ECHO)) techo(s, n); } void ttyresize(void) { struct winsize w; w.ws_row = term.row; w.ws_col = term.col; w.ws_xpixel = xw.tw; w.ws_ypixel = xw.th; if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0) fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno)); } int tattrset(int attr) { int i, j; for(i = 0; i < term.row-1; i++) { for(j = 0; j < term.col-1; j++) { if(term.line[i][j].mode & attr) return 1; } } return 0; } void tsetdirt(int top, int bot) { int i; LIMIT(top, 0, term.row-1); LIMIT(bot, 0, term.row-1); for(i = top; i <= bot; i++) term.dirty[i] = 1; } void tsetdirtattr(int attr) { int i, j; for(i = 0; i < term.row-1; i++) { for(j = 0; j < term.col-1; j++) { if(term.line[i][j].mode & attr) { tsetdirt(i, i); break; } } } } void tfulldirt(void) { tsetdirt(0, term.row-1); } void tcursor(int mode) { static TCursor c[2]; bool alt = IS_SET(MODE_ALTSCREEN); if(mode == CURSOR_SAVE) { c[alt] = term.c; } else if(mode == CURSOR_LOAD) { term.c = c[alt]; tmoveto(c[alt].x, c[alt].y); } } void treset(void) { uint i; term.c = (TCursor){{ .mode = ATTR_NULL, .fg = defaultfg, .bg = defaultbg }, .x = 0, .y = 0, .state = CURSOR_DEFAULT}; memset(term.tabs, 0, term.col * sizeof(*term.tabs)); for(i = tabspaces; i < term.col; i += tabspaces) term.tabs[i] = 1; term.top = 0; term.bot = term.row - 1; term.mode = MODE_WRAP; memset(term.trantbl, sizeof(term.trantbl), CS_USA); term.charset = 0; for(i = 0; i < 2; i++) { tmoveto(0, 0); tcursor(CURSOR_SAVE); tclearregion(0, 0, term.col-1, term.row-1); tswapscreen(); } } void tnew(int col, int row) { term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } }; tresize(col, row); term.numlock = 1; treset(); } void tswapscreen(void) { Line *tmp = term.line; term.line = term.alt; term.alt = tmp; term.mode ^= MODE_ALTSCREEN; tfulldirt(); } void tscrolldown(int orig, int n) { int i; Line temp; LIMIT(n, 0, term.bot-orig+1); tsetdirt(orig, term.bot-n); tclearregion(0, term.bot-n+1, term.col-1, term.bot); for(i = term.bot; i >= orig+n; i--) { temp = term.line[i]; term.line[i] = term.line[i-n]; term.line[i-n] = temp; } selscroll(orig, n); } void tscrollup(int orig, int n) { int i; Line temp; LIMIT(n, 0, term.bot-orig+1); tclearregion(0, orig, term.col-1, orig+n-1); tsetdirt(orig+n, term.bot); for(i = orig; i <= term.bot-n; i++) { temp = term.line[i]; term.line[i] = term.line[i+n]; term.line[i+n] = temp; } selscroll(orig, -n); } void selscroll(int orig, int n) { if(sel.ob.x == -1) return; if(BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) { if((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) { selclear(NULL); return; } if(sel.type == SEL_RECTANGULAR) { if(sel.ob.y < term.top) sel.ob.y = term.top; if(sel.oe.y > term.bot) sel.oe.y = term.bot; } else { if(sel.ob.y < term.top) { sel.ob.y = term.top; sel.ob.x = 0; } if(sel.oe.y > term.bot) { sel.oe.y = term.bot; sel.oe.x = term.col; } } selnormalize(); } } void tnewline(int first_col) { int y = term.c.y; if(y == term.bot) { tscrollup(term.top, 1); } else { y++; } tmoveto(first_col ? 0 : term.c.x, y); } void csiparse(void) { char *p = csiescseq.buf, *np; long int v; csiescseq.narg = 0; if(*p == '?') { csiescseq.priv = 1; p++; } csiescseq.buf[csiescseq.len] = '\0'; while(p < csiescseq.buf+csiescseq.len) { np = NULL; v = strtol(p, &np, 10); if(np == p) v = 0; if(v == LONG_MAX || v == LONG_MIN) v = -1; csiescseq.arg[csiescseq.narg++] = v; p = np; if(*p != ';' || csiescseq.narg == ESC_ARG_SIZ) break; p++; } csiescseq.mode[0] = *p++; csiescseq.mode[1] = (p < csiescseq.buf+csiescseq.len) ? *p : '\0'; } /* for absolute user moves, when decom is set */ void tmoveato(int x, int y) { tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0)); } void tmoveto(int x, int y) { int miny, maxy; if(term.c.state & CURSOR_ORIGIN) { miny = term.top; maxy = term.bot; } else { miny = 0; maxy = term.row - 1; } term.c.state &= ~CURSOR_WRAPNEXT; term.c.x = LIMIT(x, 0, term.col-1); term.c.y = LIMIT(y, miny, maxy); } void tsetchar(char *c, Glyph *attr, int x, int y) { static char *vt100_0[62] = { /* 0x41 - 0x7e */ "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */ 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */ 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */ 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */ "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */ "␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */ "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */ "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */ }; /* * The table is proudly stolen from rxvt. */ if(term.trantbl[term.charset] == CS_GRAPHIC0) { if(BETWEEN(c[0], 0x41, 0x7e) && vt100_0[c[0] - 0x41]) { c = vt100_0[c[0] - 0x41]; } } if(term.line[y][x].mode & ATTR_WIDE) { if(x+1 < term.col) { term.line[y][x+1].c[0] = ' '; term.line[y][x+1].mode &= ~ATTR_WDUMMY; } } else if(term.line[y][x].mode & ATTR_WDUMMY) { term.line[y][x-1].c[0] = ' '; term.line[y][x-1].mode &= ~ATTR_WIDE; } term.dirty[y] = 1; term.line[y][x] = *attr; memcpy(term.line[y][x].c, c, UTF_SIZ); } void tclearregion(int x1, int y1, int x2, int y2) { int x, y, temp; Glyph *gp; if(x1 > x2) temp = x1, x1 = x2, x2 = temp; if(y1 > y2) temp = y1, y1 = y2, y2 = temp; LIMIT(x1, 0, term.col-1); LIMIT(x2, 0, term.col-1); LIMIT(y1, 0, term.row-1); LIMIT(y2, 0, term.row-1); for(y = y1; y <= y2; y++) { term.dirty[y] = 1; for(x = x1; x <= x2; x++) { gp = &term.line[y][x]; if(selected(x, y)) selclear(NULL); gp->fg = term.c.attr.fg; gp->bg = term.c.attr.bg; gp->mode = 0; memcpy(gp->c, " ", 2); } } } void tdeletechar(int n) { int dst, src, size; Glyph *line; LIMIT(n, 0, term.col - term.c.x); dst = term.c.x; src = term.c.x + n; size = term.col - src; line = term.line[term.c.y]; memmove(&line[dst], &line[src], size * sizeof(Glyph)); tclearregion(term.col-n, term.c.y, term.col-1, term.c.y); } void tinsertblank(int n) { int dst, src, size; Glyph *line; LIMIT(n, 0, term.col - term.c.x); dst = term.c.x + n; src = term.c.x; size = term.col - dst; line = term.line[term.c.y]; memmove(&line[dst], &line[src], size * sizeof(Glyph)); tclearregion(src, term.c.y, dst - 1, term.c.y); } void tinsertblankline(int n) { if(BETWEEN(term.c.y, term.top, term.bot)) tscrolldown(term.c.y, n); } void tdeleteline(int n) { if(BETWEEN(term.c.y, term.top, term.bot)) tscrollup(term.c.y, n); } int32_t tdefcolor(int *attr, int *npar, int l) { int32_t idx = -1; uint r, g, b; switch (attr[*npar + 1]) { case 2: /* direct color in RGB space */ if (*npar + 4 >= l) { fprintf(stderr, "erresc(38): Incorrect number of parameters (%d)\n", *npar); break; } r = attr[*npar + 2]; g = attr[*npar + 3]; b = attr[*npar + 4]; *npar += 4; if(!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255)) fprintf(stderr, "erresc: bad rgb color (%d,%d,%d)\n", r, g, b); else idx = TRUECOLOR(r, g, b); break; case 5: /* indexed color */ if (*npar + 2 >= l) { fprintf(stderr, "erresc(38): Incorrect number of parameters (%d)\n", *npar); break; } *npar += 2; if(!BETWEEN(attr[*npar], 0, 255)) fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]); else idx = attr[*npar]; break; case 0: /* implemented defined (only foreground) */ case 1: /* transparent */ case 3: /* direct color in CMY space */ case 4: /* direct color in CMYK space */ default: fprintf(stderr, "erresc(38): gfx attr %d unknown\n", attr[*npar]); break; } return idx; } void tsetattr(int *attr, int l) { int i; int32_t idx; for(i = 0; i < l; i++) { switch(attr[i]) { case 0: term.c.attr.mode &= ~( ATTR_BOLD | ATTR_FAINT | ATTR_ITALIC | ATTR_UNDERLINE | ATTR_BLINK | ATTR_REVERSE | ATTR_INVISIBLE | ATTR_STRUCK ); term.c.attr.fg = defaultfg; term.c.attr.bg = defaultbg; break; case 1: term.c.attr.mode |= ATTR_BOLD; break; case 2: term.c.attr.mode |= ATTR_FAINT; break; case 3: term.c.attr.mode |= ATTR_ITALIC; break; case 4: term.c.attr.mode |= ATTR_UNDERLINE; break; case 5: /* slow blink */ /* FALLTHROUGH */ case 6: /* rapid blink */ term.c.attr.mode |= ATTR_BLINK; break; case 7: term.c.attr.mode |= ATTR_REVERSE; break; case 8: term.c.attr.mode |= ATTR_INVISIBLE; break; case 9: term.c.attr.mode |= ATTR_STRUCK; break; case 22: term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT); break; case 23: term.c.attr.mode &= ~ATTR_ITALIC; break; case 24: term.c.attr.mode &= ~ATTR_UNDERLINE; break; case 25: term.c.attr.mode &= ~ATTR_BLINK; break; case 27: term.c.attr.mode &= ~ATTR_REVERSE; break; case 28: term.c.attr.mode &= ~ATTR_INVISIBLE; break; case 29: term.c.attr.mode &= ~ATTR_STRUCK; break; case 38: if ((idx = tdefcolor(attr, &i, l)) >= 0) term.c.attr.fg = idx; break; case 39: term.c.attr.fg = defaultfg; break; case 48: if ((idx = tdefcolor(attr, &i, l)) >= 0) term.c.attr.bg = idx; break; case 49: term.c.attr.bg = defaultbg; break; default: if(BETWEEN(attr[i], 30, 37)) { term.c.attr.fg = attr[i] - 30; } else if(BETWEEN(attr[i], 40, 47)) { term.c.attr.bg = attr[i] - 40; } else if(BETWEEN(attr[i], 90, 97)) { term.c.attr.fg = attr[i] - 90 + 8; } else if(BETWEEN(attr[i], 100, 107)) { term.c.attr.bg = attr[i] - 100 + 8; } else { fprintf(stderr, "erresc(default): gfx attr %d unknown\n", attr[i]), csidump(); } break; } } } void tsetscroll(int t, int b) { int temp; LIMIT(t, 0, term.row-1); LIMIT(b, 0, term.row-1); if(t > b) { temp = t; t = b; b = temp; } term.top = t; term.bot = b; } void tsetmode(bool priv, bool set, int *args, int narg) { int *lim, mode; bool alt; for(lim = args + narg; args < lim; ++args) { if(priv) { switch(*args) { case 1: /* DECCKM -- Cursor key */ MODBIT(term.mode, set, MODE_APPCURSOR); break; case 5: /* DECSCNM -- Reverse video */ mode = term.mode; MODBIT(term.mode, set, MODE_REVERSE); if(mode != term.mode) redraw(); break; case 6: /* DECOM -- Origin */ MODBIT(term.c.state, set, CURSOR_ORIGIN); tmoveato(0, 0); break; case 7: /* DECAWM -- Auto wrap */ MODBIT(term.mode, set, MODE_WRAP); break; case 0: /* Error (IGNORED) */ case 2: /* DECANM -- ANSI/VT52 (IGNORED) */ case 3: /* DECCOLM -- Column (IGNORED) */ case 4: /* DECSCLM -- Scroll (IGNORED) */ case 8: /* DECARM -- Auto repeat (IGNORED) */ case 18: /* DECPFF -- Printer feed (IGNORED) */ case 19: /* DECPEX -- Printer extent (IGNORED) */ case 42: /* DECNRCM -- National characters (IGNORED) */ case 12: /* att610 -- Start blinking cursor (IGNORED) */ break; case 25: /* DECTCEM -- Text Cursor Enable Mode */ MODBIT(term.mode, !set, MODE_HIDE); break; case 9: /* X10 mouse compatibility mode */ xsetpointermotion(0); MODBIT(term.mode, 0, MODE_MOUSE); MODBIT(term.mode, set, MODE_MOUSEX10); break; case 1000: /* 1000: report button press */ xsetpointermotion(0); MODBIT(term.mode, 0, MODE_MOUSE); MODBIT(term.mode, set, MODE_MOUSEBTN); break; case 1002: /* 1002: report motion on button press */ xsetpointermotion(0); MODBIT(term.mode, 0, MODE_MOUSE); MODBIT(term.mode, set, MODE_MOUSEMOTION); break; case 1003: /* 1003: enable all mouse motions */ xsetpointermotion(set); MODBIT(term.mode, 0, MODE_MOUSE); MODBIT(term.mode, set, MODE_MOUSEMANY); break; case 1004: /* 1004: send focus events to tty */ MODBIT(term.mode, set, MODE_FOCUS); break; case 1006: /* 1006: extended reporting mode */ MODBIT(term.mode, set, MODE_MOUSESGR); break; case 1034: MODBIT(term.mode, set, MODE_8BIT); break; case 1049: /* swap screen & set/restore cursor as xterm */ if (!allowaltscreen) break; tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD); /* FALLTHROUGH */ case 47: /* swap screen */ case 1047: if (!allowaltscreen) break; alt = IS_SET(MODE_ALTSCREEN); if(alt) { tclearregion(0, 0, term.col-1, term.row-1); } if(set ^ alt) /* set is always 1 or 0 */ tswapscreen(); if(*args != 1049) break; /* FALLTHROUGH */ case 1048: tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD); break; case 2004: /* 2004: bracketed paste mode */ MODBIT(term.mode, set, MODE_BRCKTPASTE); break; /* Not implemented mouse modes. See comments there. */ case 1001: /* mouse highlight mode; can hang the terminal by design when implemented. */ case 1005: /* UTF-8 mouse mode; will confuse applications not supporting UTF-8 and luit. */ case 1015: /* urxvt mangled mouse mode; incompatible and can be mistaken for other control codes. */ default: fprintf(stderr, "erresc: unknown private set/reset mode %d\n", *args); break; } } else { switch(*args) { case 0: /* Error (IGNORED) */ break; case 2: /* KAM -- keyboard action */ MODBIT(term.mode, set, MODE_KBDLOCK); break; case 4: /* IRM -- Insertion-replacement */ MODBIT(term.mode, set, MODE_INSERT); break; case 12: /* SRM -- Send/Receive */ MODBIT(term.mode, !set, MODE_ECHO); break; case 20: /* LNM -- Linefeed/new line */ MODBIT(term.mode, set, MODE_CRLF); break; default: fprintf(stderr, "erresc: unknown set/reset mode %d\n", *args); break; } } } } void csihandle(void) { char buf[40]; int len; switch(csiescseq.mode[0]) { default: unknown: fprintf(stderr, "erresc: unknown csi "); csidump(); /* die(""); */ break; case '@': /* ICH -- Insert blank char */ DEFAULT(csiescseq.arg[0], 1); tinsertblank(csiescseq.arg[0]); break; case 'A': /* CUU -- Cursor Up */ DEFAULT(csiescseq.arg[0], 1); tmoveto(term.c.x, term.c.y-csiescseq.arg[0]); break; case 'B': /* CUD -- Cursor Down */ case 'e': /* VPR --Cursor Down */ DEFAULT(csiescseq.arg[0], 1); tmoveto(term.c.x, term.c.y+csiescseq.arg[0]); break; case 'i': /* MC -- Media Copy */ switch(csiescseq.arg[0]) { case 0: tdump(); break; case 1: tdumpline(term.c.y); break; case 2: tdumpsel(); break; case 4: term.mode &= ~MODE_PRINT; break; case 5: term.mode |= MODE_PRINT; break; } break; case 'c': /* DA -- Device Attributes */ if(csiescseq.arg[0] == 0) ttywrite(vtiden, sizeof(vtiden) - 1); break; case 'C': /* CUF -- Cursor Forward */ case 'a': /* HPR -- Cursor Forward */ DEFAULT(csiescseq.arg[0], 1); tmoveto(term.c.x+csiescseq.arg[0], term.c.y); break; case 'D': /* CUB -- Cursor Backward */ DEFAULT(csiescseq.arg[0], 1); tmoveto(term.c.x-csiescseq.arg[0], term.c.y); break; case 'E': /* CNL -- Cursor Down and first col */ DEFAULT(csiescseq.arg[0], 1); tmoveto(0, term.c.y+csiescseq.arg[0]); break; case 'F': /* CPL -- Cursor Up and first col */ DEFAULT(csiescseq.arg[0], 1); tmoveto(0, term.c.y-csiescseq.arg[0]); break; case 'g': /* TBC -- Tabulation clear */ switch(csiescseq.arg[0]) { case 0: /* clear current tab stop */ term.tabs[term.c.x] = 0; break; case 3: /* clear all the tabs */ memset(term.tabs, 0, term.col * sizeof(*term.tabs)); break; default: goto unknown; } break; case 'G': /* CHA -- Move to */ case '`': /* HPA */ DEFAULT(csiescseq.arg[0], 1); tmoveto(csiescseq.arg[0]-1, term.c.y); break; case 'H': /* CUP -- Move to */ case 'f': /* HVP */ DEFAULT(csiescseq.arg[0], 1); DEFAULT(csiescseq.arg[1], 1); tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1); break; case 'I': /* CHT -- Cursor Forward Tabulation tab stops */ DEFAULT(csiescseq.arg[0], 1); tputtab(csiescseq.arg[0]); break; case 'J': /* ED -- Clear screen */ selclear(NULL); switch(csiescseq.arg[0]) { case 0: /* below */ tclearregion(term.c.x, term.c.y, term.col-1, term.c.y); if(term.c.y < term.row-1) { tclearregion(0, term.c.y+1, term.col-1, term.row-1); } break; case 1: /* above */ if(term.c.y > 1) tclearregion(0, 0, term.col-1, term.c.y-1); tclearregion(0, term.c.y, term.c.x, term.c.y); break; case 2: /* all */ tclearregion(0, 0, term.col-1, term.row-1); break; default: goto unknown; } break; case 'K': /* EL -- Clear line */ switch(csiescseq.arg[0]) { case 0: /* right */ tclearregion(term.c.x, term.c.y, term.col-1, term.c.y); break; case 1: /* left */ tclearregion(0, term.c.y, term.c.x, term.c.y); break; case 2: /* all */ tclearregion(0, term.c.y, term.col-1, term.c.y); break; } break; case 'S': /* SU -- Scroll line up */ DEFAULT(csiescseq.arg[0], 1); tscrollup(term.top, csiescseq.arg[0]); break; case 'T': /* SD -- Scroll line down */ DEFAULT(csiescseq.arg[0], 1); tscrolldown(term.top, csiescseq.arg[0]); break; case 'L': /* IL -- Insert blank lines */ DEFAULT(csiescseq.arg[0], 1); tinsertblankline(csiescseq.arg[0]); break; case 'l': /* RM -- Reset Mode */ tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg); break; case 'M': /* DL -- Delete lines */ DEFAULT(csiescseq.arg[0], 1); tdeleteline(csiescseq.arg[0]); break; case 'X': /* ECH -- Erase char */ DEFAULT(csiescseq.arg[0], 1); tclearregion(term.c.x, term.c.y, term.c.x + csiescseq.arg[0] - 1, term.c.y); break; case 'P': /* DCH -- Delete char */ DEFAULT(csiescseq.arg[0], 1); tdeletechar(csiescseq.arg[0]); break; case 'Z': /* CBT -- Cursor Backward Tabulation tab stops */ DEFAULT(csiescseq.arg[0], 1); tputtab(-csiescseq.arg[0]); break; case 'd': /* VPA -- Move to */ DEFAULT(csiescseq.arg[0], 1); tmoveato(term.c.x, csiescseq.arg[0]-1); break; case 'h': /* SM -- Set terminal mode */ tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg); break; case 'm': /* SGR -- Terminal attribute (color) */ tsetattr(csiescseq.arg, csiescseq.narg); break; case 'n': /* DSR – Device Status Report (cursor position) */ if (csiescseq.arg[0] == 6) { len = snprintf(buf, sizeof(buf),"\033[%i;%iR", term.c.y+1, term.c.x+1); ttywrite(buf, len); } break; case 'r': /* DECSTBM -- Set Scrolling Region */ if(csiescseq.priv) { goto unknown; } else { DEFAULT(csiescseq.arg[0], 1); DEFAULT(csiescseq.arg[1], term.row); tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1); tmoveato(0, 0); } break; case 's': /* DECSC -- Save cursor position (ANSI.SYS) */ tcursor(CURSOR_SAVE); break; case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */ tcursor(CURSOR_LOAD); break; case ' ': switch (csiescseq.mode[1]) { case 'q': /* DECSCUSR -- Set Cursor Style */ DEFAULT(csiescseq.arg[0], 1); if (!BETWEEN(csiescseq.arg[0], 0, 6)) { goto unknown; } xw.cursor = csiescseq.arg[0]; break; default: goto unknown; } break; } } void csidump(void) { int i; uint c; printf("ESC["); for(i = 0; i < csiescseq.len; i++) { c = csiescseq.buf[i] & 0xff; if(isprint(c)) { putchar(c); } else if(c == '\n') { printf("(\\n)"); } else if(c == '\r') { printf("(\\r)"); } else if(c == 0x1b) { printf("(\\e)"); } else { printf("(%02x)", c); } } putchar('\n'); } void csireset(void) { memset(&csiescseq, 0, sizeof(csiescseq)); } void strhandle(void) { char *p = NULL; int j, narg, par; term.esc &= ~(ESC_STR_END|ESC_STR); strparse(); narg = strescseq.narg; par = atoi(strescseq.args[0]); switch(strescseq.type) { case ']': /* OSC -- Operating System Command */ switch(par) { case 0: case 1: case 2: if(narg > 1) xsettitle(strescseq.args[1]); return; case 4: /* color set */ if(narg < 3) break; p = strescseq.args[2]; /* FALLTHROUGH */ case 104: /* color reset, here p = NULL */ j = (narg > 1) ? atoi(strescseq.args[1]) : -1; if(xsetcolorname(j, p)) { fprintf(stderr, "erresc: invalid color %s\n", p); } else { /* * TODO if defaultbg color is changed, borders * are dirty */ redraw(); } return; } break; case 'k': /* old title set compatibility */ xsettitle(strescseq.args[0]); return; case 'P': /* DCS -- Device Control String */ case '_': /* APC -- Application Program Command */ case '^': /* PM -- Privacy Message */ return; } fprintf(stderr, "erresc: unknown str "); strdump(); } void strparse(void) { int c; char *p = strescseq.buf; strescseq.narg = 0; strescseq.buf[strescseq.len] = '\0'; if(*p == '\0') return; while(strescseq.narg < STR_ARG_SIZ) { strescseq.args[strescseq.narg++] = p; while((c = *p) != ';' && c != '\0') ++p; if(c == '\0') return; *p++ = '\0'; } } void strdump(void) { int i; uint c; printf("ESC%c", strescseq.type); for(i = 0; i < strescseq.len; i++) { c = strescseq.buf[i] & 0xff; if(c == '\0') { return; } else if(isprint(c)) { putchar(c); } else if(c == '\n') { printf("(\\n)"); } else if(c == '\r') { printf("(\\r)"); } else if(c == 0x1b) { printf("(\\e)"); } else { printf("(%02x)", c); } } printf("ESC\\\n"); } void strreset(void) { memset(&strescseq, 0, sizeof(strescseq)); } void tprinter(char *s, size_t len) { if(iofd != -1 && xwrite(iofd, s, len) < 0) { fprintf(stderr, "Error writing in %s:%s\n", opt_io, strerror(errno)); close(iofd); iofd = -1; } } void toggleprinter(const Arg *arg) { term.mode ^= MODE_PRINT; } void printscreen(const Arg *arg) { tdump(); } void printsel(const Arg *arg) { tdumpsel(); } void tdumpsel(void) { char *ptr; if((ptr = getsel())) { tprinter(ptr, strlen(ptr)); free(ptr); } } void tdumpline(int n) { Glyph *bp, *end; bp = &term.line[n][0]; end = &bp[MIN(tlinelen(n), term.col) - 1]; if(bp != end || bp->c[0] != ' ') { for( ;bp <= end; ++bp) tprinter(bp->c, utf8len(bp->c)); } tprinter("\n", 1); } void tdump(void) { int i; for(i = 0; i < term.row; ++i) tdumpline(i); } void tputtab(int n) { uint x = term.c.x; if(n > 0) { while(x < term.col && n--) for(++x; x < term.col && !term.tabs[x]; ++x) /* nothing */ ; } else if(n < 0) { while(x > 0 && n++) for(--x; x > 0 && !term.tabs[x]; --x) /* nothing */ ; } term.c.x = LIMIT(x, 0, term.col-1); } void techo(char *buf, int len) { for(; len > 0; buf++, len--) { char c = *buf; if(ISCONTROL((uchar) c)) { /* control code */ if(c & 0x80) { c &= 0x7f; tputc("^", 1); tputc("[", 1); } else if(c != '\n' && c != '\r' && c != '\t') { c ^= 0x40; tputc("^", 1); } tputc(&c, 1); } else { break; } } if(len) tputc(buf, len); } void tdeftran(char ascii) { static char cs[] = "0B"; static int vcs[] = {CS_GRAPHIC0, CS_USA}; char *p; if((p = strchr(cs, ascii)) == NULL) { fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii); } else { term.trantbl[term.icharset] = vcs[p - cs]; } } void tdectest(char c) { static char E[UTF_SIZ] = "E"; int x, y; if(c == '8') { /* DEC screen alignment test. */ for(x = 0; x < term.col; ++x) { for(y = 0; y < term.row; ++y) tsetchar(E, &term.c.attr, x, y); } } } void tstrsequence(uchar c) { switch (c) { case 0x90: /* DCS -- Device Control String */ c = 'P'; break; case 0x9f: /* APC -- Application Program Command */ c = '_'; break; case 0x9e: /* PM -- Privacy Message */ c = '^'; break; case 0x9d: /* OSC -- Operating System Command */ c = ']'; break; } strreset(); strescseq.type = c; term.esc |= ESC_STR; return; } void tcontrolcode(uchar ascii) { static char question[UTF_SIZ] = "?"; switch(ascii) { case '\t': /* HT */ tputtab(1); return; case '\b': /* BS */ tmoveto(term.c.x-1, term.c.y); return; case '\r': /* CR */ tmoveto(0, term.c.y); return; case '\f': /* LF */ case '\v': /* VT */ case '\n': /* LF */ /* go to first col if the mode is set */ tnewline(IS_SET(MODE_CRLF)); return; case '\a': /* BEL */ if(term.esc & ESC_STR_END) { /* backwards compatibility to xterm */ strhandle(); } else { if(!(xw.state & WIN_FOCUSED)) xseturgency(1); if (bellvolume) XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL); } break; case '\033': /* ESC */ csireset(); term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST); term.esc |= ESC_START; return; case '\016': /* SO (LS1 -- Locking shift 1) */ case '\017': /* SI (LS0 -- Locking shift 0) */ term.charset = 1 - (ascii - '\016'); return; case '\032': /* SUB */ tsetchar(question, &term.c.attr, term.c.x, term.c.y); case '\030': /* CAN */ csireset(); break; case '\005': /* ENQ (IGNORED) */ case '\000': /* NUL (IGNORED) */ case '\021': /* XON (IGNORED) */ case '\023': /* XOFF (IGNORED) */ case 0177: /* DEL (IGNORED) */ return; case 0x84: /* TODO: IND */ break; case 0x85: /* NEL -- Next line */ tnewline(1); /* always go to first col */ break; case 0x88: /* HTS -- Horizontal tab stop */ term.tabs[term.c.x] = 1; break; case 0x8d: /* TODO: RI */ case 0x8e: /* TODO: SS2 */ case 0x8f: /* TODO: SS3 */ case 0x98: /* TODO: SOS */ break; case 0x9a: /* DECID -- Identify Terminal */ ttywrite(vtiden, sizeof(vtiden) - 1); break; case 0x9b: /* TODO: CSI */ case 0x9c: /* TODO: ST */ break; case 0x90: /* DCS -- Device Control String */ case 0x9f: /* APC -- Application Program Command */ case 0x9e: /* PM -- Privacy Message */ case 0x9d: /* OSC -- Operating System Command */ tstrsequence(ascii); return; } /* only CAN, SUB, \a and C1 chars interrupt a sequence */ term.esc &= ~(ESC_STR_END|ESC_STR); return; } /* * returns 1 when the sequence is finished and it hasn't to read * more characters for this sequence, otherwise 0 */ int eschandle(uchar ascii) { switch(ascii) { case '[': term.esc |= ESC_CSI; return 0; case '#': term.esc |= ESC_TEST; return 0; case 'P': /* DCS -- Device Control String */ case '_': /* APC -- Application Program Command */ case '^': /* PM -- Privacy Message */ case ']': /* OSC -- Operating System Command */ case 'k': /* old title set compatibility */ tstrsequence(ascii); return 0; case 'n': /* LS2 -- Locking shift 2 */ case 'o': /* LS3 -- Locking shift 3 */ term.charset = 2 + (ascii - 'n'); break; case '(': /* GZD4 -- set primary charset G0 */ case ')': /* G1D4 -- set secondary charset G1 */ case '*': /* G2D4 -- set tertiary charset G2 */ case '+': /* G3D4 -- set quaternary charset G3 */ term.icharset = ascii - '('; term.esc |= ESC_ALTCHARSET; return 0; case 'D': /* IND -- Linefeed */ if(term.c.y == term.bot) { tscrollup(term.top, 1); } else { tmoveto(term.c.x, term.c.y+1); } break; case 'E': /* NEL -- Next line */ tnewline(1); /* always go to first col */ break; case 'H': /* HTS -- Horizontal tab stop */ term.tabs[term.c.x] = 1; break; case 'M': /* RI -- Reverse index */ if(term.c.y == term.top) { tscrolldown(term.top, 1); } else { tmoveto(term.c.x, term.c.y-1); } break; case 'Z': /* DECID -- Identify Terminal */ ttywrite(vtiden, sizeof(vtiden) - 1); break; case 'c': /* RIS -- Reset to inital state */ treset(); xresettitle(); xloadcols(); break; case '=': /* DECPAM -- Application keypad */ term.mode |= MODE_APPKEYPAD; break; case '>': /* DECPNM -- Normal keypad */ term.mode &= ~MODE_APPKEYPAD; break; case '7': /* DECSC -- Save Cursor */ tcursor(CURSOR_SAVE); break; case '8': /* DECRC -- Restore Cursor */ tcursor(CURSOR_LOAD); break; case '\\': /* ST -- String Terminator */ if(term.esc & ESC_STR_END) strhandle(); break; default: fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n", (uchar) ascii, isprint(ascii)? ascii:'.'); break; } return 1; } void tputc(char *c, int len) { uchar ascii; bool control; long unicodep; int width; Glyph *gp; if(len == 1) { width = 1; unicodep = ascii = *c; } else { utf8decode(c, &unicodep, UTF_SIZ); if ((width = wcwidth(unicodep)) == -1) { c = "\357\277\275"; /* UTF_INVALID */ width = 1; } ascii = unicodep; } if(IS_SET(MODE_PRINT)) tprinter(c, len); control = ISCONTROL(unicodep); /* * STR sequence must be checked before anything else * because it uses all following characters until it * receives a ESC, a SUB, a ST or any other C1 control * character. */ if(term.esc & ESC_STR) { if(len == 1 && (ascii == '\a' || ascii == 030 || ascii == 032 || ascii == 033 || ISCONTROLC1(unicodep))) { term.esc &= ~(ESC_START|ESC_STR); term.esc |= ESC_STR_END; } else if(strescseq.len + len < sizeof(strescseq.buf) - 1) { memmove(&strescseq.buf[strescseq.len], c, len); strescseq.len += len; return; } else { /* * Here is a bug in terminals. If the user never sends * some code to stop the str or esc command, then st * will stop responding. But this is better than * silently failing with unknown characters. At least * then users will report back. * * In the case users ever get fixed, here is the code: */ /* * term.esc = 0; * strhandle(); */ return; } } /* * Actions of control codes must be performed as soon they arrive * because they can be embedded inside a control sequence, and * they must not cause conflicts with sequences. */ if(control) { tcontrolcode(ascii); /* * control codes are not shown ever */ return; } else if(term.esc & ESC_START) { if(term.esc & ESC_CSI) { csiescseq.buf[csiescseq.len++] = ascii; if(BETWEEN(ascii, 0x40, 0x7E) || csiescseq.len >= \ sizeof(csiescseq.buf)-1) { term.esc = 0; csiparse(); csihandle(); } return; } else if(term.esc & ESC_ALTCHARSET) { tdeftran(ascii); } else if(term.esc & ESC_TEST) { tdectest(ascii); } else { if (!eschandle(ascii)) return; /* sequence already finished */ } term.esc = 0; /* * All characters which form part of a sequence are not * printed */ return; } if(sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y)) selclear(NULL); gp = &term.line[term.c.y][term.c.x]; if(IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) { gp->mode |= ATTR_WRAP; tnewline(1); gp = &term.line[term.c.y][term.c.x]; } if(IS_SET(MODE_INSERT) && term.c.x+width < term.col) memmove(gp+width, gp, (term.col - term.c.x - width) * sizeof(Glyph)); if(term.c.x+width > term.col) { tnewline(1); gp = &term.line[term.c.y][term.c.x]; } tsetchar(c, &term.c.attr, term.c.x, term.c.y); if(width == 2) { gp->mode |= ATTR_WIDE; if(term.c.x+1 < term.col) { gp[1].c[0] = '\0'; gp[1].mode = ATTR_WDUMMY; } } if(term.c.x+width < term.col) { tmoveto(term.c.x+width, term.c.y); } else { term.c.state |= CURSOR_WRAPNEXT; } } void tresize(int col, int row) { int i; int minrow = MIN(row, term.row); int mincol = MIN(col, term.col); bool *bp; TCursor c; if(col < 1 || row < 1) { fprintf(stderr, "tresize: error resizing to %dx%d\n", col, row); return; } /* * slide screen to keep cursor where we expect it - * tscrollup would work here, but we can optimize to * memmove because we're freeing the earlier lines */ for(i = 0; i <= term.c.y - row; i++) { free(term.line[i]); free(term.alt[i]); } /* ensure that both src and dst are not NULL */ if (i > 0) { memmove(term.line, term.line + i, row * sizeof(Line)); memmove(term.alt, term.alt + i, row * sizeof(Line)); } for(i += row; i < term.row; i++) { free(term.line[i]); free(term.alt[i]); } /* resize to new height */ term.line = xrealloc(term.line, row * sizeof(Line)); term.alt = xrealloc(term.alt, row * sizeof(Line)); term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty)); term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs)); /* resize each row to new width, zero-pad if needed */ for(i = 0; i < minrow; i++) { term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph)); term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph)); } /* allocate any new rows */ for(/* i == minrow */; i < row; i++) { term.line[i] = xmalloc(col * sizeof(Glyph)); term.alt[i] = xmalloc(col * sizeof(Glyph)); } if(col > term.col) { bp = term.tabs + term.col; memset(bp, 0, sizeof(*term.tabs) * (col - term.col)); while(--bp > term.tabs && !*bp) /* nothing */ ; for(bp += tabspaces; bp < term.tabs + col; bp += tabspaces) *bp = 1; } /* update terminal size */ term.col = col; term.row = row; /* reset scrolling region */ tsetscroll(0, row-1); /* make use of the LIMIT in tmoveto */ tmoveto(term.c.x, term.c.y); /* Clearing both screens (it makes dirty all lines) */ c = term.c; for(i = 0; i < 2; i++) { if(mincol < col && 0 < minrow) { tclearregion(mincol, 0, col - 1, minrow - 1); } if(0 < col && minrow < row) { tclearregion(0, minrow, col - 1, row - 1); } tswapscreen(); tcursor(CURSOR_LOAD); } term.c = c; } void xresize(int col, int row) { xw.tw = MAX(1, col * xw.cw); xw.th = MAX(1, row * xw.ch); XFreePixmap(xw.dpy, xw.buf); xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h, DefaultDepth(xw.dpy, xw.scr)); XftDrawChange(xw.draw, xw.buf); xclear(0, 0, xw.w, xw.h); } ushort sixd_to_16bit(int x) { return x == 0 ? 0 : 0x3737 + 0x2828 * x; } void xloadcols(void) { int i; XRenderColor color = { .alpha = 0xffff }; static bool loaded; Color *cp; if(loaded) { for (cp = dc.col; cp < dc.col + LEN(dc.col); ++cp) XftColorFree(xw.dpy, xw.vis, xw.cmap, cp); } /* load colors [0-15] and [256-LEN(colorname)] (config.h) */ for(i = 0; i < LEN(colorname); i++) { if(!colorname[i]) continue; if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, colorname[i], &dc.col[i])) { die("Could not allocate color '%s'\n", colorname[i]); } } /* load colors [16-231] ; same colors as xterm */ for(i = 16; i < 6*6*6+16; i++) { color.red = sixd_to_16bit( ((i-16)/36)%6 ); color.green = sixd_to_16bit( ((i-16)/6) %6 ); color.blue = sixd_to_16bit( ((i-16)/1) %6 ); if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &dc.col[i])) die("Could not allocate color %d\n", i); } /* load colors [232-255] ; grayscale */ for(; i < 256; i++) { color.red = color.green = color.blue = 0x0808 + 0x0a0a * (i-(6*6*6+16)); if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &dc.col[i])) die("Could not allocate color %d\n", i); } loaded = true; } int xsetcolorname(int x, const char *name) { XRenderColor color = { .alpha = 0xffff }; Color ncolor; if(!BETWEEN(x, 0, LEN(colorname))) return 1; if(!name) { if(BETWEEN(x, 16, 16 + 215)) { /* 256 color */ color.red = sixd_to_16bit( ((x-16)/36)%6 ); color.green = sixd_to_16bit( ((x-16)/6) %6 ); color.blue = sixd_to_16bit( ((x-16)/1) %6 ); if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &ncolor)) { return 1; } XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]); dc.col[x] = ncolor; return 0; } else if(BETWEEN(x, 16 + 216, 255)) { /* greyscale */ color.red = color.green = color.blue = \ 0x0808 + 0x0a0a * (x - (16 + 216)); if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &ncolor)) { return 1; } XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]); dc.col[x] = ncolor; return 0; } else { /* system colors */ name = colorname[x]; } } if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, &ncolor)) return 1; XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]); dc.col[x] = ncolor; return 0; } void xtermclear(int col1, int row1, int col2, int row2) { XftDrawRect(xw.draw, &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg], borderpx + col1 * xw.cw, borderpx + row1 * xw.ch, (col2-col1+1) * xw.cw, (row2-row1+1) * xw.ch); } /* * Absolute coordinates. */ void xclear(int x1, int y1, int x2, int y2) { XftDrawRect(xw.draw, &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg], x1, y1, x2-x1, y2-y1); } void xhints(void) { XClassHint class = {opt_class ? opt_class : termname, termname}; XWMHints wm = {.flags = InputHint, .input = 1}; XSizeHints *sizeh = NULL; sizeh = XAllocSizeHints(); sizeh->flags = PSize | PResizeInc | PBaseSize; sizeh->height = xw.h; sizeh->width = xw.w; sizeh->height_inc = xw.ch; sizeh->width_inc = xw.cw; sizeh->base_height = 2 * borderpx; sizeh->base_width = 2 * borderpx; if(xw.isfixed == True) { sizeh->flags |= PMaxSize | PMinSize; sizeh->min_width = sizeh->max_width = xw.w; sizeh->min_height = sizeh->max_height = xw.h; } if(xw.gm & (XValue|YValue)) { sizeh->flags |= USPosition | PWinGravity; sizeh->x = xw.l; sizeh->y = xw.t; sizeh->win_gravity = xgeommasktogravity(xw.gm); } XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm, &class); XFree(sizeh); } int xgeommasktogravity(int mask) { switch(mask & (XNegative|YNegative)) { case 0: return NorthWestGravity; case XNegative: return NorthEastGravity; case YNegative: return SouthWestGravity; } return SouthEastGravity; } int xloadfont(Font *f, FcPattern *pattern) { FcPattern *match; FcResult result; match = FcFontMatch(NULL, pattern, &result); if(!match) return 1; if(!(f->match = XftFontOpenPattern(xw.dpy, match))) { FcPatternDestroy(match); return 1; } f->set = NULL; f->pattern = FcPatternDuplicate(pattern); f->ascent = f->match->ascent; f->descent = f->match->descent; f->lbearing = 0; f->rbearing = f->match->max_advance_width; f->height = f->ascent + f->descent; f->width = f->lbearing + f->rbearing; return 0; } void xloadfonts(char *fontstr, double fontsize) { FcPattern *pattern; FcResult r_sz, r_psz; double fontval; float ceilf(float); if(fontstr[0] == '-') { pattern = XftXlfdParse(fontstr, False, False); } else { pattern = FcNameParse((FcChar8 *)fontstr); } if(!pattern) die("st: can't open font %s\n", fontstr); if(fontsize > 1) { FcPatternDel(pattern, FC_PIXEL_SIZE); FcPatternDel(pattern, FC_SIZE); FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize); usedfontsize = fontsize; } else { r_psz = FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval); r_sz = FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval); if(r_psz == FcResultMatch) { usedfontsize = fontval; } else if(r_sz == FcResultMatch) { usedfontsize = -1; } else { /* * Default font size is 12, if none given. This is to * have a known usedfontsize value. */ FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12); usedfontsize = 12; } defaultfontsize = usedfontsize; } FcConfigSubstitute(0, pattern, FcMatchPattern); FcDefaultSubstitute(pattern); if(xloadfont(&dc.font, pattern)) die("st: can't open font %s\n", fontstr); if(usedfontsize < 0) { FcPatternGetDouble(dc.font.match->pattern, FC_PIXEL_SIZE, 0, &fontval); usedfontsize = fontval; if(fontsize == 0) defaultfontsize = fontval; } /* Setting character width and height. */ xw.cw = ceilf(dc.font.width * cwscale); xw.ch = ceilf(dc.font.height * chscale); FcPatternDel(pattern, FC_SLANT); FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC); if(xloadfont(&dc.ifont, pattern)) die("st: can't open font %s\n", fontstr); FcPatternDel(pattern, FC_WEIGHT); FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD); if(xloadfont(&dc.ibfont, pattern)) die("st: can't open font %s\n", fontstr); FcPatternDel(pattern, FC_SLANT); FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN); if(xloadfont(&dc.bfont, pattern)) die("st: can't open font %s\n", fontstr); FcPatternDestroy(pattern); } void xunloadfont(Font *f) { XftFontClose(xw.dpy, f->match); FcPatternDestroy(f->pattern); if(f->set) FcFontSetDestroy(f->set); } void xunloadfonts(void) { /* Free the loaded fonts in the font cache. */ while(frclen > 0) XftFontClose(xw.dpy, frc[--frclen].font); xunloadfont(&dc.font); xunloadfont(&dc.bfont); xunloadfont(&dc.ifont); xunloadfont(&dc.ibfont); } void xzoom(const Arg *arg) { Arg larg; larg.i = usedfontsize + arg->i; xzoomabs(&larg); } void xzoomabs(const Arg *arg) { xunloadfonts(); xloadfonts(usedfont, arg->i); cresize(0, 0); redraw(); xhints(); } void xzoomreset(const Arg *arg) { Arg larg; if(defaultfontsize > 0) { larg.i = defaultfontsize; xzoomabs(&larg); } } void xinit(void) { XGCValues gcvalues; Cursor cursor; Window parent; pid_t thispid = getpid(); if(!(xw.dpy = XOpenDisplay(NULL))) die("Can't open display\n"); xw.scr = XDefaultScreen(xw.dpy); xw.vis = XDefaultVisual(xw.dpy, xw.scr); /* font */ if(!FcInit()) die("Could not init fontconfig.\n"); usedfont = (opt_font == NULL)? font : opt_font; xloadfonts(usedfont, 0); /* colors */ xw.cmap = XDefaultColormap(xw.dpy, xw.scr); xloadcols(); /* adjust fixed window geometry */ xw.w = 2 * borderpx + term.col * xw.cw; xw.h = 2 * borderpx + term.row * xw.ch; if(xw.gm & XNegative) xw.l += DisplayWidth(xw.dpy, xw.scr) - xw.w - 2; if(xw.gm & YNegative) xw.t += DisplayWidth(xw.dpy, xw.scr) - xw.h - 2; /* Events */ xw.attrs.background_pixel = dc.col[defaultbg].pixel; xw.attrs.border_pixel = dc.col[defaultbg].pixel; xw.attrs.bit_gravity = NorthWestGravity; xw.attrs.event_mask = FocusChangeMask | KeyPressMask | ExposureMask | VisibilityChangeMask | StructureNotifyMask | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask; xw.attrs.colormap = xw.cmap; if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0)))) parent = XRootWindow(xw.dpy, xw.scr); xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t, xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput, xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask | CWColormap, &xw.attrs); memset(&gcvalues, 0, sizeof(gcvalues)); gcvalues.graphics_exposures = False; dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures, &gcvalues); xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h, DefaultDepth(xw.dpy, xw.scr)); XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel); XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h); /* Xft rendering context */ xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap); /* input methods */ if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) { XSetLocaleModifiers("@im=local"); if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) { XSetLocaleModifiers("@im="); if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) { die("XOpenIM failed. Could not open input" " device.\n"); } } } xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing | XIMStatusNothing, XNClientWindow, xw.win, XNFocusWindow, xw.win, NULL); if(xw.xic == NULL) die("XCreateIC failed. Could not obtain input method.\n"); /* white cursor, black outline */ cursor = XCreateFontCursor(xw.dpy, XC_xterm); XDefineCursor(xw.dpy, xw.win, cursor); XRecolorCursor(xw.dpy, cursor, &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff}, &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000}); xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False); xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False); xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False); XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1); xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False); XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32, PropModeReplace, (uchar *)&thispid, 1); xresettitle(); XMapWindow(xw.dpy, xw.win); xhints(); XSync(xw.dpy, False); } void xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) { int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch, width = charlen * xw.cw, xp, i; int frcflags, charexists; int u8fl, u8fblen, u8cblen, doesexist; char *u8c, *u8fs; long unicodep; Font *font = &dc.font; FcResult fcres; FcPattern *fcpattern, *fontpattern; FcFontSet *fcsets[] = { NULL }; FcCharSet *fccharset; Color *fg, *bg, *temp, revfg, revbg, truefg, truebg; XRenderColor colfg, colbg; XRectangle r; int oneatatime; frcflags = FRC_NORMAL; if(base.mode & ATTR_ITALIC) { if(base.fg == defaultfg) base.fg = defaultitalic; font = &dc.ifont; frcflags = FRC_ITALIC; } else if((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD)) { if(base.fg == defaultfg) base.fg = defaultitalic; font = &dc.ibfont; frcflags = FRC_ITALICBOLD; } else if(base.mode & ATTR_UNDERLINE) { if(base.fg == defaultfg) base.fg = defaultunderline; } if(IS_TRUECOL(base.fg)) { colfg.alpha = 0xffff; colfg.red = TRUERED(base.fg); colfg.green = TRUEGREEN(base.fg); colfg.blue = TRUEBLUE(base.fg); XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg); fg = &truefg; } else { fg = &dc.col[base.fg]; } if(IS_TRUECOL(base.bg)) { colbg.alpha = 0xffff; colbg.green = TRUEGREEN(base.bg); colbg.red = TRUERED(base.bg); colbg.blue = TRUEBLUE(base.bg); XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg); bg = &truebg; } else { bg = &dc.col[base.bg]; } if(base.mode & ATTR_BOLD) { /* * change basic system colors [0-7] * to bright system colors [8-15] */ if(BETWEEN(base.fg, 0, 7) && !(base.mode & ATTR_FAINT)) fg = &dc.col[base.fg + 8]; if(base.mode & ATTR_ITALIC) { font = &dc.ibfont; frcflags = FRC_ITALICBOLD; } else { font = &dc.bfont; frcflags = FRC_BOLD; } } if(IS_SET(MODE_REVERSE)) { if(fg == &dc.col[defaultfg]) { fg = &dc.col[defaultbg]; } else { colfg.red = ~fg->color.red; colfg.green = ~fg->color.green; colfg.blue = ~fg->color.blue; colfg.alpha = fg->color.alpha; XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg); fg = &revfg; } if(bg == &dc.col[defaultbg]) { bg = &dc.col[defaultfg]; } else { colbg.red = ~bg->color.red; colbg.green = ~bg->color.green; colbg.blue = ~bg->color.blue; colbg.alpha = bg->color.alpha; XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &revbg); bg = &revbg; } } if(base.mode & ATTR_REVERSE) { temp = fg; fg = bg; bg = temp; } if(base.mode & ATTR_FAINT && !(base.mode & ATTR_BOLD)) { colfg.red = fg->color.red / 2; colfg.green = fg->color.green / 2; colfg.blue = fg->color.blue / 2; XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg); fg = &revfg; } if(base.mode & ATTR_BLINK && term.mode & MODE_BLINK) fg = bg; if(base.mode & ATTR_INVISIBLE) fg = bg; /* Intelligent cleaning up of the borders. */ if(x == 0) { xclear(0, (y == 0)? 0 : winy, borderpx, winy + xw.ch + ((y >= term.row-1)? xw.h : 0)); } if(x + charlen >= term.col) { xclear(winx + width, (y == 0)? 0 : winy, xw.w, ((y >= term.row-1)? xw.h : (winy + xw.ch))); } if(y == 0) xclear(winx, 0, winx + width, borderpx); if(y == term.row-1) xclear(winx, winy + xw.ch, winx + width, xw.h); /* Clean up the region we want to draw to. */ XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch); /* Set the clip region because Xft is sometimes dirty. */ r.x = 0; r.y = 0; r.height = xw.ch; r.width = width; XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1); for(xp = winx; bytelen > 0;) { /* * Search for the range in the to be printed string of glyphs * that are in the main font. Then print that range. If * some glyph is found that is not in the font, do the * fallback dance. */ u8fs = s; u8fblen = 0; u8fl = 0; oneatatime = font->width != xw.cw; for(;;) { u8c = s; u8cblen = utf8decode(s, &unicodep, UTF_SIZ); s += u8cblen; bytelen -= u8cblen; doesexist = XftCharExists(xw.dpy, font->match, unicodep); if(doesexist) { u8fl++; u8fblen += u8cblen; if(!oneatatime && bytelen > 0) continue; } if(u8fl > 0) { XftDrawStringUtf8(xw.draw, fg, font->match, xp, winy + font->ascent, (FcChar8 *)u8fs, u8fblen); xp += xw.cw * u8fl; } break; } if(doesexist) { if(oneatatime) continue; break; } /* Search the font cache. */ for(i = 0; i < frclen; i++) { charexists = XftCharExists(xw.dpy, frc[i].font, unicodep); /* Everything correct. */ if(charexists && frc[i].flags == frcflags) break; /* We got a default font for a not found glyph. */ if(!charexists && frc[i].flags == frcflags \ && frc[i].unicodep == unicodep) { break; } } /* Nothing was found. */ if(i >= frclen) { if(!font->set) font->set = FcFontSort(0, font->pattern, FcTrue, 0, &fcres); fcsets[0] = font->set; /* * Nothing was found in the cache. Now use * some dozen of Fontconfig calls to get the * font for one single character. * * Xft and fontconfig are design failures. */ fcpattern = FcPatternDuplicate(font->pattern); fccharset = FcCharSetCreate(); FcCharSetAddChar(fccharset, unicodep); FcPatternAddCharSet(fcpattern, FC_CHARSET, fccharset); FcPatternAddBool(fcpattern, FC_SCALABLE, FcTrue); FcConfigSubstitute(0, fcpattern, FcMatchPattern); FcDefaultSubstitute(fcpattern); fontpattern = FcFontSetMatch(0, fcsets, 1, fcpattern, &fcres); /* * Overwrite or create the new cache entry. */ if(frclen >= LEN(frc)) { frclen = LEN(frc) - 1; XftFontClose(xw.dpy, frc[frclen].font); frc[frclen].unicodep = 0; } frc[frclen].font = XftFontOpenPattern(xw.dpy, fontpattern); frc[frclen].flags = frcflags; frc[frclen].unicodep = unicodep; i = frclen; frclen++; FcPatternDestroy(fcpattern); FcCharSetDestroy(fccharset); } XftDrawStringUtf8(xw.draw, fg, frc[i].font, xp, winy + frc[i].font->ascent, (FcChar8 *)u8c, u8cblen); xp += xw.cw * wcwidth(unicodep); } /* * This is how the loop above actually should be. Why does the * application have to care about font details? * * I have to repeat: Xft and Fontconfig are design failures. */ /* XftDrawStringUtf8(xw.draw, fg, font->set, winx, winy + font->ascent, (FcChar8 *)s, bytelen); */ if(base.mode & ATTR_UNDERLINE) { XftDrawRect(xw.draw, fg, winx, winy + font->ascent + 1, width, 1); } if(base.mode & ATTR_STRUCK) { XftDrawRect(xw.draw, fg, winx, winy + 2 * font->ascent / 3, width, 1); } /* Reset clip to none. */ XftDrawSetClip(xw.draw, 0); } void xdrawcursor(void) { static int oldx = 0, oldy = 0; int sl, width, curx; Glyph g = {{' '}, ATTR_NULL, defaultbg, defaultcs}; LIMIT(oldx, 0, term.col-1); LIMIT(oldy, 0, term.row-1); curx = term.c.x; /* adjust position if in dummy */ if(term.line[oldy][oldx].mode & ATTR_WDUMMY) oldx--; if(term.line[term.c.y][curx].mode & ATTR_WDUMMY) curx--; memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ); /* remove the old cursor */ sl = utf8len(term.line[oldy][oldx].c); width = (term.line[oldy][oldx].mode & ATTR_WIDE)? 2 : 1; xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx, oldy, width, sl); if(IS_SET(MODE_HIDE)) return; /* draw the new one */ if(xw.state & WIN_FOCUSED) { switch (xw.cursor) { case 0: /* Blinking Block */ case 1: /* Blinking Block (Default) */ case 2: /* Steady Block */ if(IS_SET(MODE_REVERSE)) { g.mode |= ATTR_REVERSE; g.fg = defaultcs; g.bg = defaultfg; } sl = utf8len(g.c); width = (term.line[term.c.y][curx].mode & ATTR_WIDE)\ ? 2 : 1; xdraws(g.c, g, term.c.x, term.c.y, width, sl); break; case 3: /* Blinking Underline */ case 4: /* Steady Underline */ XftDrawRect(xw.draw, &dc.col[defaultcs], borderpx + curx * xw.cw, borderpx + (term.c.y + 1) * xw.ch - cursorthickness, xw.cw, cursorthickness); break; case 5: /* Blinking bar */ case 6: /* Steady bar */ XftDrawRect(xw.draw, &dc.col[defaultcs], borderpx + curx * xw.cw, borderpx + term.c.y * xw.ch, cursorthickness, xw.ch); break; } } else { XftDrawRect(xw.draw, &dc.col[defaultcs], borderpx + curx * xw.cw, borderpx + term.c.y * xw.ch, xw.cw - 1, 1); XftDrawRect(xw.draw, &dc.col[defaultcs], borderpx + curx * xw.cw, borderpx + term.c.y * xw.ch, 1, xw.ch - 1); XftDrawRect(xw.draw, &dc.col[defaultcs], borderpx + (curx + 1) * xw.cw - 1, borderpx + term.c.y * xw.ch, 1, xw.ch - 1); XftDrawRect(xw.draw, &dc.col[defaultcs], borderpx + curx * xw.cw, borderpx + (term.c.y + 1) * xw.ch - 1, xw.cw, 1); } oldx = curx, oldy = term.c.y; } void xsettitle(char *p) { XTextProperty prop; Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle, &prop); XSetWMName(xw.dpy, xw.win, &prop); XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname); XFree(prop.value); } void xresettitle(void) { xsettitle(opt_title ? opt_title : "st"); } void redraw(void) { tfulldirt(); draw(); } void draw(void) { drawregion(0, 0, term.col, term.row); XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w, xw.h, 0, 0); XSetForeground(xw.dpy, dc.gc, dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg].pixel); } void drawregion(int x1, int y1, int x2, int y2) { int ic, ib, x, y, ox, sl; Glyph base, new; char buf[DRAW_BUF_SIZ]; bool ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN); long unicodep; if(!(xw.state & WIN_VISIBLE)) return; for(y = y1; y < y2; y++) { if(!term.dirty[y]) continue; xtermclear(0, y, term.col, y); term.dirty[y] = 0; base = term.line[y][0]; ic = ib = ox = 0; for(x = x1; x < x2; x++) { new = term.line[y][x]; if(new.mode == ATTR_WDUMMY) continue; if(ena_sel && selected(x, y)) new.mode ^= ATTR_REVERSE; if(ib > 0 && (ATTRCMP(base, new) || ib >= DRAW_BUF_SIZ-UTF_SIZ)) { xdraws(buf, base, ox, y, ic, ib); ic = ib = 0; } if(ib == 0) { ox = x; base = new; } sl = utf8decode(new.c, &unicodep, UTF_SIZ); memcpy(buf+ib, new.c, sl); ib += sl; ic += (new.mode & ATTR_WIDE)? 2 : 1; } if(ib > 0) xdraws(buf, base, ox, y, ic, ib); } xdrawcursor(); } void expose(XEvent *ev) { XExposeEvent *e = &ev->xexpose; if(xw.state & WIN_REDRAW) { if(!e->count) xw.state &= ~WIN_REDRAW; } redraw(); } void visibility(XEvent *ev) { XVisibilityEvent *e = &ev->xvisibility; if(e->state == VisibilityFullyObscured) { xw.state &= ~WIN_VISIBLE; } else if(!(xw.state & WIN_VISIBLE)) { /* need a full redraw for next Expose, not just a buf copy */ xw.state |= WIN_VISIBLE | WIN_REDRAW; } } void unmap(XEvent *ev) { xw.state &= ~WIN_VISIBLE; } void xsetpointermotion(int set) { MODBIT(xw.attrs.event_mask, set, PointerMotionMask); XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs); } void xseturgency(int add) { XWMHints *h = XGetWMHints(xw.dpy, xw.win); MODBIT(h->flags, add, XUrgencyHint); XSetWMHints(xw.dpy, xw.win, h); XFree(h); } void focus(XEvent *ev) { XFocusChangeEvent *e = &ev->xfocus; if(e->mode == NotifyGrab) return; if(ev->type == FocusIn) { XSetICFocus(xw.xic); xw.state |= WIN_FOCUSED; xseturgency(0); if(IS_SET(MODE_FOCUS)) ttywrite("\033[I", 3); } else { XUnsetICFocus(xw.xic); xw.state &= ~WIN_FOCUSED; if(IS_SET(MODE_FOCUS)) ttywrite("\033[O", 3); } } bool match(uint mask, uint state) { return mask == XK_ANY_MOD || mask == (state & ~ignoremod); } void numlock(const Arg *dummy) { term.numlock ^= 1; } char* kmap(KeySym k, uint state) { Key *kp; int i; /* Check for mapped keys out of X11 function keys. */ for(i = 0; i < LEN(mappedkeys); i++) { if(mappedkeys[i] == k) break; } if(i == LEN(mappedkeys)) { if((k & 0xFFFF) < 0xFD00) return NULL; } for(kp = key; kp < key + LEN(key); kp++) { if(kp->k != k) continue; if(!match(kp->mask, state)) continue; if(IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0) continue; if(term.numlock && kp->appkey == 2) continue; if(IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0) continue; if(IS_SET(MODE_CRLF) ? kp->crlf < 0 : kp->crlf > 0) continue; return kp->s; } return NULL; } void kpress(XEvent *ev) { XKeyEvent *e = &ev->xkey; KeySym ksym; char buf[32], *customkey; int len; long c; Status status; Shortcut *bp; if(IS_SET(MODE_KBDLOCK)) return; len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status); /* 1. shortcuts */ for(bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) { if(ksym == bp->keysym && match(bp->mod, e->state)) { bp->func(&(bp->arg)); return; } } /* 2. custom keys from config.h */ if((customkey = kmap(ksym, e->state))) { ttysend(customkey, strlen(customkey)); return; } /* 3. composed string from input method */ if(len == 0) return; if(len == 1 && e->state & Mod1Mask) { if(IS_SET(MODE_8BIT)) { if(*buf < 0177) { c = *buf | 0x80; len = utf8encode(c, buf, UTF_SIZ); } } else { buf[1] = buf[0]; buf[0] = '\033'; len = 2; } } ttysend(buf, len); } void cmessage(XEvent *e) { /* * See xembed specs * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html */ if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) { if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) { xw.state |= WIN_FOCUSED; xseturgency(0); } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) { xw.state &= ~WIN_FOCUSED; } } else if(e->xclient.data.l[0] == xw.wmdeletewin) { /* Send SIGHUP to shell */ kill(pid, SIGHUP); exit(EXIT_SUCCESS); } } void cresize(int width, int height) { int col, row; if(width != 0) xw.w = width; if(height != 0) xw.h = height; col = (xw.w - 2 * borderpx) / xw.cw; row = (xw.h - 2 * borderpx) / xw.ch; tresize(col, row); xresize(col, row); ttyresize(); } void resize(XEvent *e) { if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h) return; cresize(e->xconfigure.width, e->xconfigure.height); } void run(void) { XEvent ev; int w = xw.w, h = xw.h; fd_set rfd; int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0; struct timespec drawtimeout, *tv = NULL, now, last, lastblink; long deltatime; /* Waiting for window mapping */ do { XNextEvent(xw.dpy, &ev); if(ev.type == ConfigureNotify) { w = ev.xconfigure.width; h = ev.xconfigure.height; } } while(ev.type != MapNotify); ttynew(); cresize(w, h); clock_gettime(CLOCK_MONOTONIC, &last); lastblink = last; for(xev = actionfps;;) { FD_ZERO(&rfd); FD_SET(cmdfd, &rfd); FD_SET(xfd, &rfd); if(pselect(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) { if(errno == EINTR) continue; die("select failed: %s\n", strerror(errno)); } if(FD_ISSET(cmdfd, &rfd)) { ttyread(); if(blinktimeout) { blinkset = tattrset(ATTR_BLINK); if(!blinkset) MODBIT(term.mode, 0, MODE_BLINK); } } if(FD_ISSET(xfd, &rfd)) xev = actionfps; clock_gettime(CLOCK_MONOTONIC, &now); drawtimeout.tv_sec = 0; drawtimeout.tv_nsec = (1000/xfps) * 1E6; tv = &drawtimeout; dodraw = 0; if(blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) { tsetdirtattr(ATTR_BLINK); term.mode ^= MODE_BLINK; lastblink = now; dodraw = 1; } deltatime = TIMEDIFF(now, last); if(deltatime > (xev? (1000/xfps) : (1000/actionfps)) || deltatime < 0) { dodraw = 1; last = now; } if(dodraw) { while(XPending(xw.dpy)) { XNextEvent(xw.dpy, &ev); if(XFilterEvent(&ev, None)) continue; if(handler[ev.type]) (handler[ev.type])(&ev); } draw(); XFlush(xw.dpy); if(xev && !FD_ISSET(xfd, &rfd)) xev--; if(!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) { if(blinkset) { if(TIMEDIFF(now, lastblink) \ > blinktimeout) { drawtimeout.tv_nsec = 1000; } else { drawtimeout.tv_nsec = (1E6 * \ (blinktimeout - \ TIMEDIFF(now, lastblink))); } drawtimeout.tv_sec = \ drawtimeout.tv_nsec / 1E9; drawtimeout.tv_nsec %= (long)1E9; } else { tv = NULL; } } } } } void usage(void) { die("%s " VERSION " (c) 2010-2015 st engineers\n" \ "usage: st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]\n" " [-i] [-t title] [-w windowid] [-e command ...] [command ...]\n", argv0); } int main(int argc, char *argv[]) { uint cols = 80, rows = 24; xw.l = xw.t = 0; xw.isfixed = False; xw.cursor = 0; ARGBEGIN { case 'a': allowaltscreen = false; break; case 'c': opt_class = EARGF(usage()); break; case 'e': if(argc > 1) --argc, ++argv; goto run; case 'f': opt_font = EARGF(usage()); break; case 'g': xw.gm = XParseGeometry(EARGF(usage()), &xw.l, &xw.t, &cols, &rows); break; case 'i': xw.isfixed = True; break; case 'o': opt_io = EARGF(usage()); break; case 't': opt_title = EARGF(usage()); break; case 'w': opt_embed = EARGF(usage()); break; case 'v': default: usage(); } ARGEND; run: if(argc > 0) { /* eat all remaining arguments */ opt_cmd = argv; if(!opt_title) opt_title = basename(xstrdup(argv[0])); } setlocale(LC_CTYPE, ""); XSetLocaleModifiers(""); tnew(MAX(cols, 1), MAX(rows, 1)); xinit(); selinit(); run(); return 0; }