/* See LICENSE for licence details. */
-#define _XOPEN_SOURCE
+#define _XOPEN_SOURCE 600
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
enum { ATnone=0 , ATreverse=1 , ATunderline=2, ATbold=4 };
enum { CSup, CSdown, CSright, CSleft, CShide, CSdraw, CSwrap, CSsave, CSload };
enum { CRset=1, CRupdate=2 };
-enum { TMwrap=1, TMinsert=2, TMaltcharset };
+enum { TMwrap=1, TMinsert=2 };
enum { SCupdate, SCredraw };
typedef int Color;
GC gc;
} DC;
-void die(const char *errstr, ...);
-void draw(int);
-void execsh(void);
-void sigchld(int);
-char* kmap(KeySym);
-void kpress(XKeyEvent *);
-void resize(XEvent *);
-void run(void);
-
-int escaddc(char);
-int escfinal(char);
-void escdump(void);
-void eschandle(void);
-void escparse(void);
-void escreset(void);
-
-void tclearregion(int, int, int, int);
-void tcpos(int);
-void tcursor(int);
-void tdeletechar(int);
-void tdeleteline(int);
-void tdump(void);
-void tinsertblank(int);
-void tinsertblankline(int);
-void tmoveto(int, int);
-void tnew(int, int);
-void tnewline(void);
-void tputc(char);
-void tputs(char*, int);
-void tresize(int, int);
-void tscroll(void);
-void tsetattr(int*, int);
-void tsetchar(char);
-void tsetscroll(int, int);
-
-void ttynew(void);
-void ttyread(void);
-void ttyresize(int, int);
-void ttywrite(char *, size_t);
-
-unsigned long xgetcol(const char *);
-void xclear(int, int, int, int);
-void xcursor(int);
-void xdrawc(int, int, Glyph);
-void xinit(void);
-void xscroll(void);
-
+static void die(const char *errstr, ...);
+static void draw(int);
+static void execsh(void);
+static void sigchld(int);
+static void run(void);
+
+static int escaddc(char);
+static int escfinal(char);
+static void escdump(void);
+static void eschandle(void);
+static void escparse(void);
+static void escreset(void);
+
+static void tclearregion(int, int, int, int);
+static void tcpos(int);
+static void tcursor(int);
+static void tdeletechar(int);
+static void tdeleteline(int);
+static void tdump(void);
+static void tinsertblank(int);
+static void tinsertblankline(int);
+static void tmoveto(int, int);
+static void tnew(int, int);
+static void tnewline(void);
+static void tputc(char);
+static void tputs(char*, int);
+static void tresize(int, int);
+static void tscroll(void);
+static void tsetattr(int*, int);
+static void tsetchar(char);
+static void tsetscroll(int, int);
+
+static void ttynew(void);
+static void ttyread(void);
+static void ttyresize(int, int);
+static void ttywrite(const char *, size_t);
+
+static unsigned long xgetcol(const char *);
+static void xclear(int, int, int, int);
+static void xcursor(int);
+static void xdrawc(int, int, Glyph);
+static void xinit(void);
+static void xscroll(void);
+
+static void expose(XEvent *);
+static void kpress(XEvent *);
+static void resize(XEvent *);
+
+static void (*handler[LASTEvent])(XEvent *) = {
+ [KeyPress] = kpress,
+ [Expose] = expose,
+ [ConfigureNotify] = resize
+};
/* Globals */
-DC dc;
-XWindow xw;
-Term term;
-Escseq escseq;
-int cmdfd;
-pid_t pid;
-int running;
+static DC dc;
+static XWindow xw;
+static Term term;
+static Escseq escseq;
+static int cmdfd;
+static pid_t pid;
+static int running;
void
die(const char *errstr, ...) {
exit(EXIT_FAILURE);
}
-
void
ttynew(void) {
int m, s;
}
void
-ttywrite(char *s, size_t n) {
+ttywrite(const char *s, size_t n) {
if(write(cmdfd, s, n) == -1)
die("write error on tty: %s\n", SERRNO);
}
tscroll(void) {
Line temp = term.line[term.top];
int i;
-
+ /* X stuff _before_ the line swapping (results in wrong line index) */
+ xscroll();
for(i = term.top; i < term.bot; i++)
term.line[i] = term.line[i+1];
memset(temp, 0, sizeof(Glyph) * term.col);
term.line[term.bot] = temp;
- xscroll();
}
void
tnewline(void) {
int y = term.c.y + 1;
-
- if(y > term.bot) {
+ if(y > term.bot)
tscroll(), y = term.bot;
- }
tmoveto(0, y);
}
}
void
+tsetlinestate(int n, int state) {
+ int i;
+ for(i = 0; i < term.col; i++)
+ term.line[n][i].state |= state;
+}
+
+void
tinsertblankline (int n) {
int i;
Line blank;
term.line[i-n] = blank;
/* blank it */
memset(blank, 0, term.col * sizeof(Glyph));
+ tsetlinestate(i, CRupdate);
+ tsetlinestate(i-n, CRupdate);
}
}
-
void
tdeleteline(int n) {
int i;
term.line[i+n] = blank;
/* blank it */
memset(blank, 0, term.col * sizeof(Glyph));
+ tsetlinestate(i, CRupdate);
+ tsetlinestate(i-n, CRupdate);
}
}
tsetattr(int *attr, int l) {
int i;
- for(i = 0; i < l; i++) {
- switch(attr[i]) {
- case 0:
- memset(&term.c.attr, 0, sizeof(term.c.attr));
- term.c.attr.fg = DefaultFG;
- term.c.attr.bg = DefaultBG;
- break;
- case 1:
- term.c.attr.mode |= ATbold;
- break;
- case 4:
- term.c.attr.mode |= ATunderline;
- break;
- case 7:
- term.c.attr.mode |= ATreverse;
- break;
- case 8:
- term.c.hidden = CShide;
- break;
- case 22:
- term.c.attr.mode &= ~ATbold;
- break;
- case 24:
- term.c.attr.mode &= ~ATunderline;
- break;
- case 27:
- term.c.attr.mode &= ~ATreverse;
- break;
- case 39:
- term.c.attr.fg = DefaultFG;
- break;
- case 49:
- term.c.attr.fg = 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;
- break;
- }
+ for(i = 0; i < l; i++) {
+ switch(attr[i]) {
+ case 0:
+ memset(&term.c.attr, 0, sizeof(term.c.attr));
+ term.c.attr.fg = DefaultFG;
+ term.c.attr.bg = DefaultBG;
+ break;
+ case 1:
+ term.c.attr.mode |= ATbold;
+ break;
+ case 4:
+ term.c.attr.mode |= ATunderline;
+ break;
+ case 7:
+ term.c.attr.mode |= ATreverse;
+ break;
+ case 8:
+ term.c.hidden = CShide;
+ break;
+ case 22:
+ term.c.attr.mode &= ~ATbold;
+ break;
+ case 24:
+ term.c.attr.mode &= ~ATunderline;
+ break;
+ case 27:
+ term.c.attr.mode &= ~ATreverse;
+ break;
+ case 39:
+ term.c.attr.fg = DefaultFG;
+ break;
+ case 49:
+ term.c.attr.fg = 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;
+ break;
}
+ }
}
void
term.bot = b;
}
-
void
-eschandle(void) {
+eschandle(void) {
switch(escseq.pre) {
default:
goto unknown_seq;
return color.pixel;
}
-
void
xclear(int x1, int y1, int x2, int y2) {
XClearArea(xw.dis, xw.win,
False);
}
-
void
xscroll(void) {
int srcy = (term.top+1) * xw.ch;
xclear(0, term.bot, term.col-1, term.bot);
}
-
-
-
void
xinit(void) {
XGCValues values;
/* remove the old cursor */
if(term.line[oldy][oldx].state & CRset)
xdrawc(oldx, oldy, term.line[oldy][oldx]);
- else xclear(oldx, oldy, oldx, oldy); /* XXX: maybe a bug */
- if(mode == CSdraw && !term.c.hidden) {
+ else
+ xclear(oldx, oldy, oldx, oldy);
+ /* draw the new one */
+ if(mode == CSdraw) {
xdrawc(term.c.x, term.c.y, g);
oldx = term.c.x, oldy = term.c.y;
}
}
-
void
draw(int redraw_all) {
int x, y;
if(redraw_all)
XClearWindow(xw.dis, xw.win);
+
/* XXX: drawing could be optimised */
for(y = 0; y < term.row; y++) {
for(x = 0; x < term.col; x++) {
changed = term.line[y][x].state & CRupdate;
set = term.line[y][x].state & CRset;
- if((changed && set) || (redraw_all && set)) {
+ if(redraw_all || changed) {
term.line[y][x].state &= ~CRupdate;
- xdrawc(x, y, term.line[y][x]);
+ if(set)
+ xdrawc(x, y, term.line[y][x]);
+ else
+ xclear(x, y, x, y);
}
}
}
xcursor(CSdraw);
}
-char*
-kmap(KeySym k) {
- int i;
- for(i = 0; i < LEN(key); i++)
- if(key[i].k == k)
- return (char*)key[i].s;
- return NULL;
+void
+expose(XEvent *ev) {
+ draw(SCredraw);
}
void
-kpress(XKeyEvent *e) {
+kpress(XEvent *ev) {
+ XKeyEvent *e = &ev->xkey;
KeySym ksym;
char buf[32];
int len;
int meta;
int shift;
- char* skmap;
meta = e->state & Mod1Mask;
shift = e->state & ShiftMask;
len = XLookupString(e, buf, sizeof(buf), &ksym, NULL);
- if(skmap = kmap(ksym))
- ttywrite(skmap, strlen(skmap));
+ if(key[ksym])
+ ttywrite(key[ksym], strlen(key[ksym]));
else if(len > 0) {
buf[sizeof(buf)-1] = '\0';
if(meta && len == 1)
void
run(void) {
- int ret;
XEvent ev;
fd_set rfd;
int xfd = XConnectionNumber(xw.dis);
running = 1;
XSelectInput(xw.dis, xw.win, ExposureMask | KeyPressMask | StructureNotifyMask);
XResizeWindow(xw.dis, xw.win, xw.w , xw.h); /* fix resize bug in wmii (?) */
-
+
while(running) {
FD_ZERO(&rfd);
FD_SET(cmdfd, &rfd);
FD_SET(xfd, &rfd);
- XFlush(xw.dis);
- ret = select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, NULL);
-
- if(ret < 0)
+ if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, NULL) == -1) {
+ if(errno == EINTR)
+ continue;
die("select failed: %s\n", SERRNO);
-
- if(FD_ISSET(xfd, &rfd)) {
- while(XPending(xw.dis)) {
- XNextEvent(xw.dis, &ev);
- switch (ev.type) {
- default:
- break;
- case KeyPress:
- kpress(&ev.xkey);
- break;
- case Expose:
- draw(SCredraw);
- break;
- case ConfigureNotify:
- resize(&ev);
- break;
- }
- }
}
if(FD_ISSET(cmdfd, &rfd)) {
ttyread();
draw(SCupdate);
}
+ while(XPending(xw.dis)) {
+ XNextEvent(xw.dis, &ev);
+ if(handler[ev.type])
+ (handler[ev.type])(&ev);
+ }
}
}
Got questions, comments, patches, etc.? Contact Jason Woofenden