#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
-#include <X11/Xlib.h>
#include <X11/Xatom.h>
-#include <X11/keysym.h>
+#include <X11/Xlib.h>
#include <X11/Xutil.h>
+#include <X11/cursorfont.h>
+#include <X11/keysym.h>
+
+#include <sys/time.h>
+#include <time.h>
#if defined(__linux)
#include <pty.h>
#define USAGE \
"st-" VERSION ", (c) 2010 st engineers\n" \
- "usage: st [-t title] [-c class] [-e cmd] [-v]\n"
+ "usage: st [-t title] [-c class] [-v] [-e cmd]\n"
/* Arbitrary sizes */
#define ESC_TITLE_SIZ 256
#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 DEFAULT(a, b) (a) = (a) ? (a) : (b)
#define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
#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))
+#define TIMEDIFFERENCE(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000)
/* Attribute, Cursor, Character state, Terminal mode, Screen draw mode */
enum { ATTR_NULL=0 , ATTR_REVERSE=1 , ATTR_UNDERLINE=2, ATTR_BOLD=4, ATTR_GFX=8 };
CURSOR_SAVE, CURSOR_LOAD };
enum { CURSOR_DEFAULT = 0, CURSOR_HIDE = 1, CURSOR_WRAPNEXT = 2 };
enum { GLYPH_SET=1, GLYPH_DIRTY=2 };
-enum { MODE_WRAP=1, MODE_INSERT=2, MODE_APPKEYPAD=4, MODE_ALTSCREEN=8,
+enum { MODE_WRAP=1, MODE_INSERT=2, MODE_APPKEYPAD=4, MODE_ALTSCREEN=8,
MODE_CRLF=16 };
enum { ESC_START=1, ESC_CSI=2, ESC_OSC=4, ESC_TITLE=8, ESC_ALTCHARSET=16 };
-enum { SCREEN_UPDATE, SCREEN_REDRAW };
enum { WIN_VISIBLE=1, WIN_REDRAW=2, WIN_FOCUSED=4 };
#undef B0
/* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
typedef struct {
char buf[ESC_BUF_SIZ]; /* raw string */
- int len; /* raw string length */
+ int len; /* raw string length */
char priv;
int arg[ESC_ARG_SIZ];
- int narg; /* nb of args */
+ int narg; /* nb of args */
char mode;
} CSIEscape;
/* Internal representation of the screen */
typedef struct {
- int row; /* nb row */
+ int row; /* nb row */
int col; /* nb col */
Line* line; /* screen */
Line* alt; /* alternate screen */
TCursor c; /* cursor */
- int top; /* top scroll limit */
+ int top; /* top scroll limit */
int bot; /* bottom scroll limit */
int mode; /* terminal mode flags */
int esc; /* escape state flags */
XIM xim;
XIC xic;
int scr;
- int w; /* window width */
+ int w; /* window width */
int h; /* window height */
int bufw; /* pixmap width */
int bufh; /* pixmap height */
int ch; /* char height */
int cw; /* char width */
char state; /* focus, redraw, visible */
-} XWindow;
+} XWindow;
typedef struct {
KeySym k;
+ unsigned int mask;
char s[ESC_BUF_SIZ];
} Key;
int mode;
int bx, by;
int ex, ey;
- struct {int x, y;} b, e;
+ struct {int x, y;} b, e;
char *clip;
+ Atom xtarget;
+ struct timeval tclick1;
+ struct timeval tclick2;
} Selection;
#include "config.h"
static void die(const char *errstr, ...);
-static void draw(int);
+static void draw();
+static void drawregion(int, int, int, int);
static void execsh(void);
static void sigchld(int);
static void run(void);
static void expose(XEvent *);
static void visibility(XEvent *);
static void unmap(XEvent *);
-static char* kmap(KeySym);
+static char* kmap(KeySym, unsigned int state);
static void kpress(XEvent *);
static void resize(XEvent *);
static void focus(XEvent *);
static void selinit(void);
static inline int selected(int, int);
static void selcopy(void);
-static void selpaste(void);
+static void selpaste();
static int utf8decode(char *, long *);
static int utf8encode(long *, char *);
static int cmdfd;
static pid_t pid;
static Selection sel;
-static char *opt_cmd = NULL;
+static char **opt_cmd = NULL;
static char *opt_title = NULL;
static char *opt_class = NULL;
else if((*c1&(B7|B6|B5)) == (B7|B6) && b == 1)
return 0;
else if((*c1&(B7|B6|B5|B4)) == (B7|B6|B5) &&
- ((b == 1) ||
+ ((b == 1) ||
((b == 2) && (*c2&(B7|B6)) == B7)))
return 0;
else if((*c1&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4) &&
return 2;
else if ((c&(B7|B6|B5|B4)) == (B7|B6|B5))
return 3;
- else
+ else
return 4;
}
void
selinit(void) {
+ sel.tclick1.tv_sec = 0;
+ sel.tclick1.tv_usec = 0;
sel.mode = 0;
sel.bx = -1;
sel.clip = NULL;
+ sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
+ if(sel.xtarget == None)
+ sel.xtarget = XA_STRING;
}
-static inline int
+static inline int
selected(int x, int y) {
if(sel.ey == y && sel.by == y) {
int bx = MIN(sel.bx, sel.ex);
int ex = MAX(sel.bx, sel.ex);
return BETWEEN(x, bx, ex);
}
- return ((sel.b.y < y&&y < sel.e.y) || (y==sel.e.y && x<=sel.e.x))
+ return ((sel.b.y < y&&y < sel.e.y) || (y==sel.e.y && x<=sel.e.x))
|| (y==sel.b.y && x>=sel.b.x && (x<=sel.e.x || sel.b.y!=sel.e.y));
}
if(b)
*b = e->xbutton.button;
- *x = e->xbutton.x/xw.cw;
- *y = e->xbutton.y/xw.ch;
+ *x = (e->xbutton.x - BORDER)/xw.cw;
+ *y = (e->xbutton.y - BORDER)/xw.ch;
sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
sel.b.y = MIN(sel.by, sel.ey);
sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
void
bpress(XEvent *e) {
sel.mode = 1;
- sel.ex = sel.bx = e->xbutton.x/xw.cw;
- sel.ey = sel.by = e->xbutton.y/xw.ch;
+ sel.ex = sel.bx = (e->xbutton.x - BORDER)/xw.cw;
+ sel.ey = sel.by = (e->xbutton.y - BORDER)/xw.ch;
}
void
memcpy(ptr, term.line[y][x].c, sl);
ptr += sl;
}
- if(ls)
- *ptr = '\n', ptr++;
+ if(ls && y < sel.e.y)
+ *ptr++ = '\n';
}
*ptr = 0;
}
void
selpaste() {
- XConvertSelection(xw.dpy, XA_PRIMARY, XA_STRING, XA_PRIMARY, xw.win, CurrentTime);
+ XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY, xw.win, CurrentTime);
}
void
xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
if(xsre->target == xa_targets) {
/* respond with the supported type */
- Atom string = XA_STRING;
+ Atom string = sel.xtarget;
XChangeProperty(xsre->display, xsre->requestor, xsre->property,
XA_ATOM, 32, PropModeReplace,
(unsigned char *) &string, 1);
xev.property = xsre->property;
- } else if(xsre->target == XA_STRING) {
+ } else if(xsre->target == sel.xtarget) {
XChangeProperty(xsre->display, xsre->requestor, xsre->property,
xsre->target, 8, PropModeReplace,
(unsigned char *) sel.clip, strlen(sel.clip));
XFlush(xw.dpy);
}
-/* TODO: doubleclick to select word */
void
brelease(XEvent *e) {
int b;
sel.mode = 0;
getbuttoninfo(e, &b, &sel.ex, &sel.ey);
- if(sel.bx==sel.ex && sel.by==sel.ey) {
+
+ if(sel.bx == sel.ex && sel.by == sel.ey) {
sel.bx = -1;
- if(b==2)
+ if(b == 2)
selpaste();
+
+ else if(b == 1) {
+ /* double click to select word */
+ struct timeval now;
+ gettimeofday(&now, NULL);
+
+ if(TIMEDIFFERENCE(now, sel.tclick1) <= DOUBLECLICK_TIMEOUT) {
+ sel.bx = sel.ex;
+ while(term.line[sel.ey][sel.bx-1].state & GLYPH_SET &&
+ term.line[sel.ey][sel.bx-1].c[0] != ' ') sel.bx--;
+ sel.b.x = sel.bx;
+ while(term.line[sel.ey][sel.ex+1].state & GLYPH_SET &&
+ term.line[sel.ey][sel.ex+1].c[0] != ' ') sel.ex++;
+ sel.e.x = sel.ex;
+ sel.b.y = sel.e.y = sel.ey;
+ selcopy();
+ }
+
+ /* triple click on the line */
+ if(TIMEDIFFERENCE(now, sel.tclick2) <= TRIPLECLICK_TIMEOUT) {
+ sel.b.x = sel.bx = 0;
+ sel.e.x = sel.ex = term.col;
+ sel.b.y = sel.e.y = sel.ey;
+ selcopy();
+ }
+ }
} else {
- if(b==1)
+ if(b == 1)
selcopy();
}
- draw(1);
+ memcpy(&sel.tclick2, &sel.tclick1, sizeof(struct timeval));
+ gettimeofday(&sel.tclick1, NULL);
+ draw();
}
void
bmotion(XEvent *e) {
- if (sel.mode) {
+ if(sel.mode) {
+ int oldey = sel.ey,
+ oldex = sel.ex;
getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
- /* XXX: draw() can't keep up, disabled for now.
- selection is visible on button release.
- draw(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, (sel.ey < term.row ? endy+1 : term.row));
+ }
}
}
void
execsh(void) {
- char *args[] = {getenv("SHELL"), "-i", NULL};
- if(opt_cmd)
- args[0] = opt_cmd, args[1] = NULL;
- else
- DEFAULT(args[0], SHELL);
+ char **args;
+ char *envshell = getenv("SHELL");
+
+ DEFAULT(envshell, "sh");
putenv("TERM="TNAME);
+ args = opt_cmd ? opt_cmd : (char*[]){envshell, "-i", NULL};
execvp(args[0], args);
+ exit(EXIT_FAILURE);
}
void
}
/* keep any uncomplete utf8 char for the next call */
- memcpy(buf, ptr, buflen);
+ memmove(buf, ptr, buflen);
}
void
ttywrite(const char *s, size_t n) {
+ {size_t nn;
+ for(nn = 0; nn < n; nn++)
+ dump(s[nn]);
+ }
if(write(cmdfd, s, n) == -1)
die("write error on tty: %s\n", SERRNO);
}
switch(escseq.mode) {
default:
unknown:
- printf("erresc: unknown csi ");
+ fprintf(stderr, "erresc: unknown csi ");
csidump();
/* die(""); */
break;
term.c.attr.mode &= ~ATTR_GFX;
break;
default:
- printf("esc unhandled charset: ESC ( %c\n", ascii);
+ fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
}
term.esc = 0;
} else {
void
xinit(void) {
XSetWindowAttributes attrs;
+ Cursor cursor;
if(!(xw.dpy = XOpenDisplay(NULL)))
die("Can't open display\n");
/* gc */
dc.gc = XCreateGC(xw.dpy, xw.win, 0, NULL);
+ /* 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});
+
XMapWindow(xw.dpy, xw.win);
xhints();
XStoreName(xw.dpy, xw.win, opt_title ? opt_title : "st");
dc.gc, r.x, r.y+dc.font.ascent, g.c, sl);
}
+void
+drawregion(int x0, int x1, int y0, int y1) {
+ draw();
+}
+
void
-draw(int dummy) {
+draw() {
int x, y;
xclear(0, 0, term.col-1, term.row-1);
#else
/* optimized drawing routine */
+void
+draw() {
+ drawregion(0, 0, term.col, term.row);
+}
+
void
-draw(int redraw_all) {
+drawregion(int x1, int y1, int x2, int y2) {
int ic, ib, x, y, ox, sl;
Glyph base, new;
char buf[DRAW_BUF_SIZ];
if(!(xw.state & WIN_VISIBLE))
return;
- xclear(0, 0, term.col-1, term.row-1);
- for(y = 0; y < term.row; y++) {
+ xclear(x1, y1, x2-1, y2-1);
+ for(y = y1; y < y2; y++) {
base = term.line[y][0];
ic = ib = ox = 0;
- for(x = 0; x < term.col; x++) {
+ for(x = x1; x < x2; x++) {
new = term.line[y][x];
- if(sel.bx!=-1 && *(new.c) && selected(x, y))
+ 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)) {
if(xw.state & WIN_REDRAW) {
if(!e->count) {
xw.state &= ~WIN_REDRAW;
- draw(SCREEN_REDRAW);
+ draw();
}
} else
XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, e->x-BORDER, e->y-BORDER,
xseturgency(0);
} else
xw.state &= ~WIN_FOCUSED;
- draw(SCREEN_UPDATE);
+ draw();
}
char*
-kmap(KeySym k) {
+kmap(KeySym k, unsigned int state) {
int i;
for(i = 0; i < LEN(key); i++)
- if(key[i].k == k)
+ if(key[i].k == k && (key[i].mask == 0 || key[i].mask & state))
return (char*)key[i].s;
return NULL;
}
len = XmbLookupString(xw.xic, e, buf, sizeof(buf), &ksym, &status);
/* 1. custom keys from config.h */
- if((customkey = kmap(ksym)))
+ if((customkey = kmap(ksym, e->state)))
ttywrite(customkey, strlen(customkey));
/* 2. hardcoded (overrides X lookup) */
else
case XK_Down:
case XK_Left:
case XK_Right:
- sprintf(buf, "\033%c%c", IS_SET(MODE_APPKEYPAD) ? 'O' : '[', "DACB"[ksym - XK_Left]);
+ /* XXX: shift up/down doesn't work */
+ sprintf(buf, "\033%c%c", IS_SET(MODE_APPKEYPAD) ? 'O' : '[', (shift ? "dacb":"DACB")[ksym - XK_Left]);
ttywrite(buf, 3);
break;
case XK_Insert:
if(meta && len == 1)
ttywrite("\033", 1);
ttywrite(buf, len);
- } else /* 4. nothing to send */
- fprintf(stderr, "errkey: %d\n", (int)ksym);
+ }
break;
}
}
if(col == term.col && row == term.row)
return;
if(tresize(col, row))
- draw(SCREEN_REDRAW);
+ draw();
ttyresize(col, row);
xresize(col, row);
}
}
if(FD_ISSET(cmdfd, &rfd)) {
ttyread();
- draw(SCREEN_UPDATE);
+ draw();
}
while(XPending(xw.dpy)) {
XNextEvent(xw.dpy, &ev);
if(++i < argc) opt_class = argv[i];
break;
case 'e':
- if(++i < argc) opt_cmd = argv[i];
+ if(++i < argc) opt_cmd = &argv[i];
break;
case 'v':
default:
die(USAGE);
}
+ /* -e eats every remaining arguments */
+ if(opt_cmd)
+ break;
}
setlocale(LC_CTYPE, "");
tnew(80, 24);
Got questions, comments, patches, etc.? Contact Jason Woofenden