fill /acme

1 files changed, 315 insertions, 0 deletions

diff --git a/acme/bin/source/adict/_win.c b/acme/bin/source/adict/_win.c
new file mode 100644
index 000000000..18657c572
--- /dev/null
+++ b/acme/bin/source/adict/_win.c
@@ -0,0 +1,315 @@
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+#include <thread.h>
+#include "win.h"
+
+void*
+erealloc(void *p, uint n)
+{
+	p = realloc(p, n);
+	if(p == nil)
+		threadprint(2, "realloc failed: %r");
+	return p;
+}
+
+void
+wnew(Win *w)
+{
+	char buf[12];
+
+	w->ctl = open("/mnt/acme/new/ctl", ORDWR);
+	if(w->ctl<0 || read(w->ctl, buf, 12)!=12)
+		 threadprint (2, "can't open window ctl file: %r");
+	ctlwrite(w, "noscroll\n");
+	w->winid = atoi(buf);
+	w->event = openfile(w, "event");
+	w->addr = -1;	/* will be opened when needed */
+	w->body = nil;
+	w->data = -1;
+}
+
+int
+openfile(Win *w, char *f)
+{
+	char buf[64];
+	int fd;
+
+	sprint(buf, "/mnt/acme/%d/%s", w->winid, f);
+	fd = open(buf, ORDWR|OCEXEC);
+	if(fd < 0)
+		 threadprint (2,"can't open window %s file: %r", f);
+	return fd;
+}
+
+void
+openbody(Win *w, int mode)
+{
+	char buf[64];
+
+	sprint(buf, "/mnt/acme/%d/body", w->winid);
+	w->body = Bopen(buf, mode|OCEXEC);
+	if(w->body == nil)
+		 threadprint(2,"can't open window body file: %r");
+}
+
+void
+wwritebody(Win *w, char *s, int n)
+{
+	if(w->body == nil)
+		openbody(w, OWRITE);
+	if(Bwrite(w->body, s, n) != n)
+		  threadprint(2,"write error to window: %r");
+	Bflush(w->body);
+}
+
+void
+wreplace(Win *w, char *addr, char *repl, int nrepl)
+{
+	if(w->addr < 0)
+		w->addr = openfile(w, "addr");
+	if(w->data < 0)
+		w->data = openfile(w, "data");
+	if(write(w->addr, addr, strlen(addr)) < 0){
+		threadprint(2, "mail: warning: badd address %s:%r\n", addr);
+		return;
+	}
+	if(write(w->data, repl, nrepl) != nrepl)
+		 threadprint(2, "writing data: %r");
+}
+
+static int
+nrunes(char *s, int nb)
+{
+	int i, n;
+	Rune r;
+
+	n = 0;
+	for(i=0; i<nb; n++)
+		i += chartorune(&r, s+i);
+	return n;
+}
+
+void
+wread(Win *w, uint q0, uint q1, char *data)
+{
+	int m, n, nr;
+	char buf[256];
+
+	if(w->addr < 0)
+		w->addr = openfile(w, "addr");
+	if(w->data < 0)
+		w->data = openfile(w, "data");
+	m = q0;
+	while(m < q1){
+		n = sprint(buf, "#%d", m);
+		if(write(w->addr, buf, n) != n)
+			  threadprint(2,"writing addr: %r");
+		n = read(w->data, buf, sizeof buf);
+		if(n <= 0)
+			  threadprint(2,"reading data: %r");
+		nr = nrunes(buf, n);
+		while(m+nr >q1){
+			do; while(n>0 && (buf[--n]&0xC0)==0x80);
+			--nr;
+		}
+		if(n == 0)
+			break;
+		memmove(data, buf, n);
+		data += n;
+		*data = 0;
+		m += nr;
+	}
+}
+
+void
+wselect(Win *w, char *addr)
+{
+	if(w->addr < 0)
+		w->addr = openfile(w, "addr");
+	if(write(w->addr, addr, strlen(addr)) < 0)
+		  threadprint(2,"writing addr");
+	ctlwrite(w, "dot=addr\n");
+}
+
+void
+wtagwrite(Win *w, char *s, int n)
+{
+	int fd;
+
+	fd = openfile(w, "tag");
+	if(write(fd, s, n) != n)
+		  threadprint(2,"tag write: %r");
+	close(fd);
+}
+
+void
+ctlwrite(Win *w, char *s)
+{
+	int n;
+
+	n = strlen(s);
+	if(write(w->ctl, s, n) != n)
+		 threadprint(2,"write error to ctl file: %r");
+}
+
+int
+wdel(Win *w)
+{
+	if(write(w->ctl, "del\n", 4) != 4)
+		return False;
+	wdormant(w);
+	close(w->ctl);
+	w->ctl = -1;
+	close(w->event);
+	w->event = -1;
+	return True;
+}
+
+void
+wname(Win *w, char *s)
+{
+	char buf[128];
+
+	sprint(buf, "name %s\n", s);
+	ctlwrite(w, buf);
+}
+
+void
+wclean(Win *w)
+{
+	if(w->body)
+		Bflush(w->body);
+	ctlwrite(w, "clean\n");
+}
+
+void
+wdormant(Win *w)
+{
+	if(w->addr >= 0){
+		close(w->addr);
+		w->addr = -1;
+	}
+	if(w->body != nil){
+		Bterm(w->body);
+		w->body = nil;
+	}
+	if(w->data >= 0){
+		close(w->data);
+		w->data = -1;
+	}
+}
+
+int
+getec(Win *w)
+{
+	if(w->nbuf == 0){
+		w->nbuf = read(w->event, w->buf, sizeof w->buf);
+		if(w->nbuf <= 0)
+			  threadprint(2,"event read error: %r");
+		w->bufp = w->buf;
+	}
+	w->nbuf--;
+	return *w->bufp++;
+}
+
+int
+geten(Win *w)
+{
+	int n, c;
+
+	n = 0;
+	while('0'<=(c=getec(w)) && c<='9')
+		n = n*10+(c-'0');
+	if(c != ' ')
+		 threadprint(2, "event number syntax");
+	return n;
+}
+
+int
+geter(Win *w, char *buf, int *nb)
+{
+	Rune r;
+	int n;
+
+	r = getec(w);
+	buf[0] = r;
+	n = 1;
+	if(r < Runeself)
+		goto Return;
+	while(!fullrune(buf, n))
+		buf[n++] = getec(w);
+	chartorune(&r, buf);
+    Return:
+	*nb = n;
+	return r;
+}
+
+
+void
+wevent(Win *w, Event *e)
+{
+	int i, nb;
+
+	e->c1 = getec(w);
+	e->c2 = getec(w);
+	e->q0 = geten(w);
+	e->q1 = geten(w);
+	e->flag = geten(w);
+	e->nr = geten(w);
+	if(e->nr > EVENTSIZE)
+		  threadprint(2, "wevent: event string too long");
+	e->nb = 0;
+	for(i=0; i<e->nr; i++){
+		e->r[i] = geter(w, e->b+e->nb, &nb);
+		e->nb += nb;
+	}
+	e->r[e->nr] = 0;
+	e->b[e->nb] = 0;
+	if(getec(w) != '\n')
+		 threadprint(2, "wevent: event syntax 2");
+}
+
+void
+wslave(Win *w, Channel *ce)
+{
+	Event e;
+
+	while(recv(ce, &e) >= 0)
+		wevent(w, &e);
+}
+
+void
+wwriteevent(Win *w, Event *e)
+{
+	threadprint(w->event, "%c%c%d %d\n", e->c1, e->c2, e->q0, e->q1);
+}
+
+int
+wreadall(Win *w, char **sp)
+{
+	char *s;
+	int m, na, n;
+
+	if(w->body != nil)
+		Bterm(w->body);
+	openbody(w, OREAD);
+	s = nil;
+	na = 0;
+	n = 0;
+	for(;;){
+		if(na < n+512){
+			na += 1024;
+			s = erealloc(s, na+1);
+		}
+		m = Bread(w->body, s+n, na-n);
+		if(m <= 0)
+			break;
+		n += m;
+	}
+	s[n] = 0;
+	Bterm(w->body);
+	w->body = nil;
+	*sp = s;
+	return n;
+}