#include <limits.h>
#include <locale.h>
#include <stdarg.h>
+#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/select.h>
#include <sys/stat.h>
+#include <sys/time.h>
#include <sys/types.h>
#include <sys/wait.h>
+#include <time.h>
#include <unistd.h>
#include <X11/Xatom.h>
#include <X11/Xlib.h>
#include <X11/cursorfont.h>
#include <X11/keysym.h>
-#include <sys/time.h>
-#include <time.h>
-
#if defined(__linux)
#include <pty.h>
#elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
#endif
#define USAGE \
- "st " VERSION " (c) 2010-2011 st engineers\n" \
+ "st " VERSION " (c) 2010-2012 st engineers\n" \
"usage: st [-t title] [-c class] [-w windowid] [-v] [-e command...]\n"
/* XEMBED messages */
#define XK_NO_MOD UINT_MAX
#define XK_ANY_MOD 0
+#define SELECT_TIMEOUT (20*1000) /* 20 ms */
+#define DRAW_TIMEOUT (20*1000) /* 20 ms */
+
#define SERRNO strerror(errno)
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define MAX(a, b) ((a) < (b) ? (b) : (a))
#undef B0
enum { B0=1, B1=2, B2=4, B3=8, B4=16, B5=32, B6=64, B7=128 };
+typedef unsigned char uchar;
+typedef unsigned int uint;
+typedef unsigned long ulong;
+
typedef struct {
char c[UTF_SIZ]; /* character code */
- char mode; /* attribute flags */
- int fg; /* foreground */
- int bg; /* background */
- char state; /* state flags */
+ uchar mode; /* attribute flags */
+ uchar fg; /* foreground */
+ uchar bg; /* background */
+ uchar state; /* state flags */
} Glyph;
typedef Glyph* Line;
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 ch; /* char height */
int cw; /* char width */
char state; /* focus, redraw, visible */
+ struct timeval lastdraw;
} XWindow;
typedef struct {
KeySym k;
- unsigned int mask;
+ uint mask;
char s[ESC_BUF_SIZ];
} Key;
/* Drawing Context */
typedef struct {
- unsigned long col[256];
+ ulong col[256];
GC gc;
struct {
int ascent;
static void execsh(void);
static void sigchld(int);
static void run(void);
+static bool last_draw_too_old(void);
static void csidump(void);
static void csihandle(void);
static void tsetchar(char*);
static void tsetscroll(int, int);
static void tswapscreen(void);
+static void tfulldirt(void);
static void ttynew(void);
static void ttyread(void);
static void xdraws(char *, Glyph, int, int, int, int);
static void xhints(void);
static void xclear(int, int, int, int);
+static void xcopy(int, int, int, int);
static void xdrawcursor(void);
static void xinit(void);
static void xloadcols(void);
static void expose(XEvent *);
static void visibility(XEvent *);
static void unmap(XEvent *);
-static char* kmap(KeySym, unsigned int state);
+static char* kmap(KeySym, uint);
static void kpress(XEvent *);
static void cmessage(XEvent *);
static void resize(XEvent *);
static void selrequest(XEvent *);
static void selinit(void);
-static inline int selected(int, int);
+static inline bool selected(int, int);
static void selcopy(void);
static void selpaste();
static void selscroll(int, int);
int
utf8decode(char *s, long *u) {
- unsigned char c;
+ uchar c;
int i, n, rtn;
rtn = 1;
c = *s;
- if(~c&B7) { /* 0xxxxxxx */
+ if(~c & B7) { /* 0xxxxxxx */
*u = c;
return rtn;
- } else if((c&(B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */
+ } else if((c & (B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */
*u = c&(B4|B3|B2|B1|B0);
n = 1;
- } else if((c&(B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */
+ } else if((c & (B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */
*u = c&(B3|B2|B1|B0);
n = 2;
- } else if((c&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */
- *u = c&(B2|B1|B0);
+ } else if((c & (B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */
+ *u = c & (B2|B1|B0);
n = 3;
} else
goto invalid;
- for(i=n,++s; i>0; --i,++rtn,++s) {
+ for(i = n, ++s; i > 0; --i, ++rtn, ++s) {
c = *s;
- if((c&(B7|B6)) != B7) /* 10xxxxxx */
+ if((c & (B7|B6)) != B7) /* 10xxxxxx */
goto invalid;
*u <<= 6;
- *u |= c&(B5|B4|B3|B2|B1|B0);
+ *u |= c & (B5|B4|B3|B2|B1|B0);
}
if((n == 1 && *u < 0x80) ||
(n == 2 && *u < 0x800) ||
int
utf8encode(long *u, char *s) {
- unsigned char *sp;
- unsigned long uc;
+ uchar *sp;
+ ulong uc;
int i, n;
- sp = (unsigned char*) s;
+ sp = (uchar*) s;
uc = *u;
if(uc < 0x80) {
*sp = uc; /* 0xxxxxxx */
UTF-8 otherwise return 0 */
int
isfullutf8(char *s, int b) {
- unsigned char *c1, *c2, *c3;
+ uchar *c1, *c2, *c3;
- c1 = (unsigned char *) s;
- c2 = (unsigned char *) ++s;
- c3 = (unsigned char *) ++s;
+ c1 = (uchar *) s;
+ c2 = (uchar *) ++s;
+ c3 = (uchar *) ++s;
if(b < 1)
return 0;
else if((*c1&(B7|B6|B5)) == (B7|B6) && b == 1)
int
utf8size(char *s) {
- unsigned char c = *s;
+ uchar c = *s;
if(~c&B7)
return 1;
sel.xtarget = XA_STRING;
}
-static inline int
+static inline bool
selected(int x, int y) {
if(sel.ey == y && sel.by == y) {
int bx = MIN(sel.bx, sel.ex);
if(IS_SET(MODE_MOUSE))
mousereport(e);
else if(e->xbutton.button == Button1) {
+ if(sel.bx != -1)
+ for(int i=sel.b.y; i<=sel.e.y; i++)
+ term.dirty[i] = 1;
sel.mode = 1;
sel.ex = sel.bx = X2COL(e->xbutton.x);
sel.ey = sel.by = Y2ROW(e->xbutton.y);
void
selnotify(XEvent *e) {
- unsigned long nitems, ofs, rem;
+ ulong nitems, ofs, rem;
int format;
- unsigned char *data;
+ uchar *data;
Atom type;
ofs = 0;
Atom string = sel.xtarget;
XChangeProperty(xsre->display, xsre->requestor, xsre->property,
XA_ATOM, 32, PropModeReplace,
- (unsigned char *) &string, 1);
+ (uchar *) &string, 1);
xev.property = xsre->property;
- } else if(xsre->target == sel.xtarget) {
+ } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
XChangeProperty(xsre->display, xsre->requestor, xsre->property,
xsre->target, 8, PropModeReplace,
- (unsigned char *) sel.clip, strlen(sel.clip));
+ (uchar *) sel.clip, strlen(sel.clip));
xev.property = xsre->property;
}
else if(e->xbutton.button == Button1) {
sel.mode = 0;
getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
+ term.dirty[sel.ey] = 1;
if(sel.bx == sel.ex && sel.by == sel.ey) {
struct timeval now;
sel.bx = -1;
if(oldey != sel.ey || oldex != sel.ex) {
int starty = MIN(oldey, sel.ey);
int endy = MAX(oldey, sel.ey);
- drawregion(0, (starty > 0 ? starty : 0), term.col, (endy < term.row ? endy+1 : term.row));
+ for(int i = starty; i <= endy; i++)
+ term.dirty[i] = 1;
+ draw();
}
}
}
}
void
+tfulldirt(void)
+{
+ int i;
+ for(i = 0; i < term.row; i++)
+ term.dirty[i] = 1;
+}
+
+void
tcursor(int mode) {
static TCursor c;
term.row = row, term.col = col;
term.line = malloc(term.row * sizeof(Line));
term.alt = malloc(term.row * sizeof(Line));
+ term.dirty = malloc(term.row * sizeof(*term.dirty));
+
for(row = 0; row < term.row; row++) {
term.line[row] = malloc(term.col * sizeof(Glyph));
term.alt [row] = malloc(term.col * sizeof(Glyph));
+ term.dirty[row] = 0;
}
/* setup screen */
treset();
term.line = term.alt;
term.alt = tmp;
term.mode ^= MODE_ALTSCREEN;
+ tfulldirt();
}
void
temp = term.line[i];
term.line[i] = term.line[i-n];
term.line[i-n] = temp;
+
+ term.dirty[i] = 1;
+ term.dirty[i-n] = 1;
}
selscroll(orig, n);
temp = term.line[i];
term.line[i] = term.line[i+n];
term.line[i+n] = temp;
+
+ term.dirty[i] = 1;
+ term.dirty[i+n] = 1;
}
selscroll(orig, -n);
void
tsetchar(char *c) {
+ term.dirty[term.c.y] = 1;
term.line[term.c.y][term.c.x] = term.c.attr;
memcpy(term.line[term.c.y][term.c.x].c, c, UTF_SIZ);
term.line[term.c.y][term.c.x].state |= GLYPH_SET;
LIMIT(y1, 0, term.row-1);
LIMIT(y2, 0, term.row-1);
- for(y = y1; y <= y2; y++)
+ for(y = y1; y <= y2; y++) {
+ term.dirty[y] = 1;
for(x = x1; x <= x2; x++)
term.line[y][x].state = 0;
+ }
}
void
int src = term.c.x + n;
int dst = term.c.x;
int size = term.col - src;
+
+ term.dirty[term.c.y] = 1;
if(src >= term.col) {
tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
int dst = src + n;
int size = term.col - dst;
+ term.dirty[term.c.y] = 1;
+
if(dst >= term.col) {
tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
return;
void
csidump(void) {
- int i;
- printf("ESC [ %s", escseq.priv ? "? " : "");
- if(escseq.narg)
- for(i = 0; i < escseq.narg; i++)
- printf("%d ", escseq.arg[i]);
- if(escseq.mode)
- putchar(escseq.mode);
- putchar('\n');
+ fwrite("\033[", 1, 2, stdout);
+ fwrite(escseq.buf, 1, escseq.len, stdout);
}
void
break;
default:
fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
- (unsigned char) ascii, isprint(ascii)?ascii:'.');
+ (uchar) ascii, isprint(ascii)?ascii:'.');
term.esc = 0;
}
}
} else {
- if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey)) sel.bx = -1;
+ if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
+ sel.bx = -1;
switch(ascii) {
case '\t':
tputtab();
/* resize to new height */
term.line = realloc(term.line, row * sizeof(Line));
term.alt = realloc(term.alt, row * sizeof(Line));
+ term.dirty = realloc(term.dirty, row * sizeof(*term.dirty));
/* resize each row to new width, zero-pad if needed */
for(i = 0; i < minrow; i++) {
+ term.dirty[i] = 1;
term.line[i] = realloc(term.line[i], col * sizeof(Glyph));
term.alt[i] = realloc(term.alt[i], col * sizeof(Glyph));
for(x = mincol; x < col; x++) {
/* allocate any new rows */
for(/* i == minrow */; i < row; i++) {
+ term.dirty[i] = 1;
term.line[i] = calloc(col, sizeof(Glyph));
term.alt [i] = calloc(col, sizeof(Glyph));
}
tmoveto(term.c.x, term.c.y);
/* reset scrolling region */
tsetscroll(0, row-1);
+
return (slide > 0);
}
xloadcols(void) {
int i, r, g, b;
XColor color;
- unsigned long white = WhitePixel(xw.dpy, xw.scr);
+ ulong white = WhitePixel(xw.dpy, xw.scr);
- for(i = 0; i < 16; i++) {
+ for(i = 0; i < LEN(colorname); i++) {
if(!XAllocNamedColor(xw.dpy, xw.cmap, colorname[i], &color, &color)) {
dc.col[i] = white;
fprintf(stderr, "Could not allocate color '%s'\n", colorname[i]);
void
xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
- unsigned long xfg = dc.col[base.fg], xbg = dc.col[base.bg], temp;
+ int fg = base.fg, bg = base.bg, temp;
int winx = x*xw.cw, winy = y*xw.ch + dc.font.ascent, width = charlen*xw.cw;
+ XFontSet fontset = dc.font.set;
int i;
/* only switch default fg/bg if term is in RV mode */
if(IS_SET(MODE_REVERSE)) {
- if(base.fg == DefaultFG)
- xfg = dc.col[DefaultBG];
- if(base.bg == DefaultBG)
- xbg = dc.col[DefaultFG];
+ if(fg == DefaultFG)
+ fg = DefaultBG;
+ if(bg == DefaultBG)
+ bg = DefaultFG;
}
if(base.mode & ATTR_REVERSE)
- temp = xfg, xfg = xbg, xbg = temp;
+ temp = fg, fg = bg, bg = temp;
- XSetBackground(xw.dpy, dc.gc, xbg);
- XSetForeground(xw.dpy, dc.gc, xfg);
+ if(base.mode & ATTR_BOLD) {
+ fg += 8;
+ fontset = dc.bfont.set;
+ }
+
+ XSetBackground(xw.dpy, dc.gc, dc.col[bg]);
+ XSetForeground(xw.dpy, dc.gc, dc.col[fg]);
if(base.mode & ATTR_GFX) {
for(i = 0; i < bytelen; i++) {
- char c = gfx[(unsigned int)s[i] % 256];
+ char c = gfx[(uint)s[i] % 256];
if(c)
s[i] = c;
else if(s[i] > 0x5f)
}
}
- XmbDrawImageString(xw.dpy, xw.buf, base.mode & ATTR_BOLD ? dc.bfont.set : dc.font.set,
- dc.gc, winx, winy, s, bytelen);
+ XmbDrawImageString(xw.dpy, xw.buf, fontset, dc.gc, winx, winy, s, bytelen);
if(base.mode & ATTR_UNDERLINE)
XDrawLine(xw.dpy, xw.buf, dc.gc, winx, winy+1, winx+width-1, winy+1);
}
+/* copy buffer pixmap to screen pixmap */
+void
+xcopy(int x, int y, int cols, int rows) {
+ int src_x = x*xw.cw, src_y = y*xw.ch, src_w = cols*xw.cw, src_h = rows*xw.ch;
+ int dst_x = BORDER+src_x, dst_y = BORDER+src_y;
+ XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, src_x, src_y, src_w, src_h, dst_x, dst_y);
+}
+
void
xdrawcursor(void) {
static int oldx = 0;
xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx, oldy, 1, sl);
} else
xclear(oldx, oldy, oldx, oldy);
-
+
+ xcopy(oldx, oldy, 1, 1);
+
/* draw the new one */
- if(!(term.c.state & CURSOR_HIDE) && (xw.state & WIN_FOCUSED)) {
- sl = utf8size(g.c);
+ if(!(term.c.state & CURSOR_HIDE)) {
+ if(!(xw.state & WIN_FOCUSED))
+ g.bg = DefaultUCS;
+
if(IS_SET(MODE_REVERSE))
g.mode |= ATTR_REVERSE, g.fg = DefaultCS, g.bg = DefaultFG;
+
+ sl = utf8size(g.c);
xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
oldx = term.c.x, oldy = term.c.y;
}
+
+ xcopy(term.c.x, term.c.y, 1, 1);
}
void
draw() {
drawregion(0, 0, term.col, term.row);
+ gettimeofday(&xw.lastdraw, NULL);
}
void
if(!(xw.state & WIN_VISIBLE))
return;
- xclear(x1, y1, x2-1, y2-1);
for(y = y1; y < y2; y++) {
+ if(!term.dirty[y])
+ continue;
+ xclear(0, y, term.col, y);
+ term.dirty[y] = 0;
base = term.line[y][0];
ic = ib = ox = 0;
for(x = x1; x < x2; x++) {
if(sel.bx != -1 && *(new.c) && selected(x, y))
new.mode ^= ATTR_REVERSE;
if(ib > 0 && (!(new.state & GLYPH_SET) || ATTRCMP(base, new) ||
- ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
+ ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
xdraws(buf, base, ox, y, ic, ib);
ic = ib = 0;
}
}
if(ib > 0)
xdraws(buf, base, ox, y, ic, ib);
+ xcopy(0, y, term.col, 1);
}
xdrawcursor();
- XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER);
}
void
if(xw.state & WIN_REDRAW) {
if(!e->count) {
xw.state &= ~WIN_REDRAW;
- draw();
+ xcopy(0, 0, term.col, term.row);
}
} else
XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, e->x-BORDER, e->y-BORDER,
}
char*
-kmap(KeySym k, unsigned int state) {
+kmap(KeySym k, uint state) {
int i;
state &= ~Mod2Mask;
for(i = 0; i < LEN(key); i++) {
- unsigned int mask = key[i].mask;
+ uint mask = key[i].mask;
if(key[i].k == k && ((state & mask) == mask || (mask == XK_NO_MOD && !state)))
return (char*)key[i].s;
}
xresize(col, row);
}
+bool
+last_draw_too_old(void) {
+ struct timeval now;
+ gettimeofday(&now, NULL);
+ return TIMEDIFF(now, xw.lastdraw) >= DRAW_TIMEOUT/1000;
+}
+
void
run(void) {
XEvent ev;
fd_set rfd;
int xfd = XConnectionNumber(xw.dpy);
-
+ struct timeval timeout = {0};
+ bool stuff_to_print = 0;
+
for(;;) {
FD_ZERO(&rfd);
FD_SET(cmdfd, &rfd);
FD_SET(xfd, &rfd);
- if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, NULL) < 0) {
+ timeout.tv_sec = 0;
+ timeout.tv_usec = SELECT_TIMEOUT;
+ if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, &timeout) < 0) {
if(errno == EINTR)
continue;
die("select failed: %s\n", SERRNO);
}
if(FD_ISSET(cmdfd, &rfd)) {
ttyread();
+ stuff_to_print = 1;
+ }
+
+ if(stuff_to_print && last_draw_too_old()) {
+ stuff_to_print = 0;
draw();
}
+
while(XPending(xw.dpy)) {
XNextEvent(xw.dpy, &ev);
if(XFilterEvent(&ev, xw.win))
case 'w':
if(++i < argc) opt_embed = argv[i];
break;
- case 'e':
+ case 'e':
/* eat every remaining arguments */
if(++i < argc) opt_cmd = &argv[i];
goto run;
Got questions, comments, patches, etc.? Contact Jason Woofenden