1 9f1fdc12 2005-10-29 devnull #include <u.h>
  2 9f1fdc12 2005-10-29 devnull #include <libc.h>
  3 9f1fdc12 2005-10-29 devnull #include <bio.h>
  4 9f1fdc12 2005-10-29 devnull #include <thread.h>
  5 9f1fdc12 2005-10-29 devnull #include <plumb.h>
  6 3f8c36d6 2006-02-09 devnull #include <9pclient.h>
  7 9f1fdc12 2005-10-29 devnull #include "dat.h"
  8 9f1fdc12 2005-10-29 devnull 
  9 9f1fdc12 2005-10-29 devnull Window*
 10 9f1fdc12 2005-10-29 devnull newwindow(void)
 11 9f1fdc12 2005-10-29 devnull {
 12 9f1fdc12 2005-10-29 devnull 	char buf[12];
 13 9f1fdc12 2005-10-29 devnull 	Window *w;
 14 9f1fdc12 2005-10-29 devnull 
 15 9f1fdc12 2005-10-29 devnull 	w = emalloc(sizeof(Window));
 16 9f1fdc12 2005-10-29 devnull 	w->ctl = fsopen(acmefs, "new/ctl", ORDWR|OCEXEC);
 17 3f8c36d6 2006-02-09 devnull 	if(w->ctl == nil || fsread(w->ctl, buf, 12)!=12)
 18 9f1fdc12 2005-10-29 devnull 		error("can't open window ctl file: %r");
 19 9f1fdc12 2005-10-29 devnull 
 20 9f1fdc12 2005-10-29 devnull 	ctlprint(w->ctl, "noscroll\n");
 21 9f1fdc12 2005-10-29 devnull 	w->id = atoi(buf);
 22 3f8c36d6 2006-02-09 devnull 	w->event = winopenfile(w, "event");
 23 9f1fdc12 2005-10-29 devnull 	w->addr = nil;	/* will be opened when needed */
 24 9f1fdc12 2005-10-29 devnull 	w->body = nil;
 25 9f1fdc12 2005-10-29 devnull 	w->data = nil;
 26 9f1fdc12 2005-10-29 devnull 	w->cevent = chancreate(sizeof(Event*), 0);
 27 880ab2f1 2006-02-15 devnull 	w->ref = 1;
 28 9f1fdc12 2005-10-29 devnull 	return w;
 29 9f1fdc12 2005-10-29 devnull }
 30 9f1fdc12 2005-10-29 devnull 
 31 9f1fdc12 2005-10-29 devnull void
 32 880ab2f1 2006-02-15 devnull winincref(Window *w)
 33 880ab2f1 2006-02-15 devnull {
 34 880ab2f1 2006-02-15 devnull 	qlock(&w->lk);
 35 880ab2f1 2006-02-15 devnull 	++w->ref;
 36 880ab2f1 2006-02-15 devnull 	qunlock(&w->lk);
 37 880ab2f1 2006-02-15 devnull }
 38 880ab2f1 2006-02-15 devnull 
 39 880ab2f1 2006-02-15 devnull void
 40 880ab2f1 2006-02-15 devnull windecref(Window *w)
 41 880ab2f1 2006-02-15 devnull {
 42 880ab2f1 2006-02-15 devnull 	qlock(&w->lk);
 43 880ab2f1 2006-02-15 devnull 	if(--w->ref > 0){
 44 880ab2f1 2006-02-15 devnull 		qunlock(&w->lk);
 45 880ab2f1 2006-02-15 devnull 		return;
 46 880ab2f1 2006-02-15 devnull 	}
 47 880ab2f1 2006-02-15 devnull 	fsclose(w->event);
 48 880ab2f1 2006-02-15 devnull 	chanfree(w->cevent);
 49 880ab2f1 2006-02-15 devnull 	free(w);
 50 880ab2f1 2006-02-15 devnull }
 51 880ab2f1 2006-02-15 devnull 
 52 880ab2f1 2006-02-15 devnull void
 53 9f1fdc12 2005-10-29 devnull winsetdump(Window *w, char *dir, char *cmd)
 54 9f1fdc12 2005-10-29 devnull {
 55 9f1fdc12 2005-10-29 devnull 	if(dir != nil)
 56 9f1fdc12 2005-10-29 devnull 		ctlprint(w->ctl, "dumpdir %s\n", dir);
 57 9f1fdc12 2005-10-29 devnull 	if(cmd != nil)
 58 9f1fdc12 2005-10-29 devnull 		ctlprint(w->ctl, "dump %s\n", cmd);
 59 9f1fdc12 2005-10-29 devnull }
 60 9f1fdc12 2005-10-29 devnull 
 61 9f1fdc12 2005-10-29 devnull void
 62 9f1fdc12 2005-10-29 devnull wineventproc(void *v)
 63 9f1fdc12 2005-10-29 devnull {
 64 9f1fdc12 2005-10-29 devnull 	Window *w;
 65 9f1fdc12 2005-10-29 devnull 	int i;
 66 9f1fdc12 2005-10-29 devnull 
 67 9f1fdc12 2005-10-29 devnull 	w = v;
 68 9f1fdc12 2005-10-29 devnull 	for(i=0; ; i++){
 69 9f1fdc12 2005-10-29 devnull 		if(i >= NEVENT)
 70 9f1fdc12 2005-10-29 devnull 			i = 0;
 71 9f1fdc12 2005-10-29 devnull 		wingetevent(w, &w->e[i]);
 72 9f1fdc12 2005-10-29 devnull 		sendp(w->cevent, &w->e[i]);
 73 9f1fdc12 2005-10-29 devnull 	}
 74 9f1fdc12 2005-10-29 devnull }
 75 9f1fdc12 2005-10-29 devnull 
 76 9f1fdc12 2005-10-29 devnull static CFid*
 77 3f8c36d6 2006-02-09 devnull winopenfile1(Window *w, char *f, int m)
 78 9f1fdc12 2005-10-29 devnull {
 79 9f1fdc12 2005-10-29 devnull 	char buf[64];
 80 9f1fdc12 2005-10-29 devnull 	CFid* fd;
 81 9f1fdc12 2005-10-29 devnull 
 82 9f1fdc12 2005-10-29 devnull 	sprint(buf, "%d/%s", w->id, f);
 83 9f1fdc12 2005-10-29 devnull 	fd = fsopen(acmefs, buf, m|OCEXEC);
 84 9f1fdc12 2005-10-29 devnull 	if(fd == nil)
 85 9f1fdc12 2005-10-29 devnull 		error("can't open window file %s: %r", f);
 86 9f1fdc12 2005-10-29 devnull 	return fd;
 87 9f1fdc12 2005-10-29 devnull }
 88 9f1fdc12 2005-10-29 devnull 
 89 9f1fdc12 2005-10-29 devnull CFid*
 90 9f1fdc12 2005-10-29 devnull winopenfile(Window *w, char *f)
 91 9f1fdc12 2005-10-29 devnull {
 92 9f1fdc12 2005-10-29 devnull 	return winopenfile1(w, f, ORDWR);
 93 9f1fdc12 2005-10-29 devnull }
 94 9f1fdc12 2005-10-29 devnull 
 95 9f1fdc12 2005-10-29 devnull void
 96 9f1fdc12 2005-10-29 devnull wintagwrite(Window *w, char *s, int n)
 97 9f1fdc12 2005-10-29 devnull {
 98 9f1fdc12 2005-10-29 devnull 	CFid* fid;
 99 9f1fdc12 2005-10-29 devnull 
100 3f8c36d6 2006-02-09 devnull 	fid = winopenfile(w, "tag");
101 9f1fdc12 2005-10-29 devnull 	if(fswrite(fid, s, n) != n)
102 9f1fdc12 2005-10-29 devnull 		error("tag write: %r");
103 9f1fdc12 2005-10-29 devnull 	fsclose(fid);
104 9f1fdc12 2005-10-29 devnull }
105 9f1fdc12 2005-10-29 devnull 
106 9f1fdc12 2005-10-29 devnull void
107 9f1fdc12 2005-10-29 devnull winname(Window *w, char *s)
108 9f1fdc12 2005-10-29 devnull {
109 9f1fdc12 2005-10-29 devnull 	ctlprint(w->ctl, "name %s\n", s);
110 9f1fdc12 2005-10-29 devnull }
111 9f1fdc12 2005-10-29 devnull 
112 9f1fdc12 2005-10-29 devnull void
113 9f1fdc12 2005-10-29 devnull winopenbody(Window *w, int mode)
114 9f1fdc12 2005-10-29 devnull {
115 9f1fdc12 2005-10-29 devnull 	char buf[256];
116 9f1fdc12 2005-10-29 devnull 	CFid* fid;
117 9f1fdc12 2005-10-29 devnull 
118 9f1fdc12 2005-10-29 devnull 	sprint(buf, "%d/body", w->id);
119 3f8c36d6 2006-02-09 devnull 	fid = fsopen(acmefs, buf, mode|OCEXEC);
120 3f8c36d6 2006-02-09 devnull 	w->body = fid;
121 9f1fdc12 2005-10-29 devnull 	if(w->body == nil)
122 9f1fdc12 2005-10-29 devnull 		error("can't open window body file: %r");
123 9f1fdc12 2005-10-29 devnull }
124 9f1fdc12 2005-10-29 devnull 
125 9f1fdc12 2005-10-29 devnull void
126 9f1fdc12 2005-10-29 devnull winclosebody(Window *w)
127 9f1fdc12 2005-10-29 devnull {
128 9f1fdc12 2005-10-29 devnull 	if(w->body != nil){
129 9f1fdc12 2005-10-29 devnull 		fsclose(w->body);
130 9f1fdc12 2005-10-29 devnull 		w->body = nil;
131 9f1fdc12 2005-10-29 devnull 	}
132 9f1fdc12 2005-10-29 devnull }
133 9f1fdc12 2005-10-29 devnull 
134 9f1fdc12 2005-10-29 devnull void
135 9f1fdc12 2005-10-29 devnull winwritebody(Window *w, char *s, int n)
136 9f1fdc12 2005-10-29 devnull {
137 9f1fdc12 2005-10-29 devnull 	if(w->body == nil)
138 9f1fdc12 2005-10-29 devnull 		winopenbody(w, OWRITE);
139 9f1fdc12 2005-10-29 devnull 	if(fswrite(w->body, s, n) != n)
140 9f1fdc12 2005-10-29 devnull 		error("write error to window: %r");
141 9f1fdc12 2005-10-29 devnull }
142 9f1fdc12 2005-10-29 devnull 
143 9f1fdc12 2005-10-29 devnull int
144 9f1fdc12 2005-10-29 devnull wingetec(Window *w)
145 9f1fdc12 2005-10-29 devnull {
146 9f1fdc12 2005-10-29 devnull 	if(w->nbuf == 0){
147 9f1fdc12 2005-10-29 devnull 		w->nbuf = fsread(w->event, w->buf, sizeof w->buf);
148 9f1fdc12 2005-10-29 devnull 		if(w->nbuf <= 0){
149 9f1fdc12 2005-10-29 devnull 			/* probably because window has exited, and only called by wineventproc, so just shut down */
150 880ab2f1 2006-02-15 devnull 			windecref(w);
151 9f1fdc12 2005-10-29 devnull 			threadexits(nil);
152 9f1fdc12 2005-10-29 devnull 		}
153 9f1fdc12 2005-10-29 devnull 		w->bufp = w->buf;
154 9f1fdc12 2005-10-29 devnull 	}
155 9f1fdc12 2005-10-29 devnull 	w->nbuf--;
156 9f1fdc12 2005-10-29 devnull 	return *w->bufp++;
157 9f1fdc12 2005-10-29 devnull }
158 9f1fdc12 2005-10-29 devnull 
159 9f1fdc12 2005-10-29 devnull int
160 9f1fdc12 2005-10-29 devnull wingeten(Window *w)
161 9f1fdc12 2005-10-29 devnull {
162 9f1fdc12 2005-10-29 devnull 	int n, c;
163 9f1fdc12 2005-10-29 devnull 
164 9f1fdc12 2005-10-29 devnull 	n = 0;
165 9f1fdc12 2005-10-29 devnull 	while('0'<=(c=wingetec(w)) && c<='9')
166 9f1fdc12 2005-10-29 devnull 		n = n*10+(c-'0');
167 9f1fdc12 2005-10-29 devnull 	if(c != ' ')
168 9f1fdc12 2005-10-29 devnull 		error("event number syntax");
169 9f1fdc12 2005-10-29 devnull 	return n;
170 9f1fdc12 2005-10-29 devnull }
171 9f1fdc12 2005-10-29 devnull 
172 9f1fdc12 2005-10-29 devnull int
173 9f1fdc12 2005-10-29 devnull wingeter(Window *w, char *buf, int *nb)
174 9f1fdc12 2005-10-29 devnull {
175 9f1fdc12 2005-10-29 devnull 	Rune r;
176 9f1fdc12 2005-10-29 devnull 	int n;
177 9f1fdc12 2005-10-29 devnull 
178 9f1fdc12 2005-10-29 devnull 	r = wingetec(w);
179 9f1fdc12 2005-10-29 devnull 	buf[0] = r;
180 9f1fdc12 2005-10-29 devnull 	n = 1;
181 9f1fdc12 2005-10-29 devnull 	if(r >= Runeself) {
182 9f1fdc12 2005-10-29 devnull 		while(!fullrune(buf, n))
183 9f1fdc12 2005-10-29 devnull 			buf[n++] = wingetec(w);
184 9f1fdc12 2005-10-29 devnull 		chartorune(&r, buf);
185 9f1fdc12 2005-10-29 devnull 	} 
186 9f1fdc12 2005-10-29 devnull 	*nb = n;
187 9f1fdc12 2005-10-29 devnull 	return r;
188 9f1fdc12 2005-10-29 devnull }
189 9f1fdc12 2005-10-29 devnull 
190 9f1fdc12 2005-10-29 devnull void
191 9f1fdc12 2005-10-29 devnull wingetevent(Window *w, Event *e)
192 9f1fdc12 2005-10-29 devnull {
193 9f1fdc12 2005-10-29 devnull 	int i, nb;
194 9f1fdc12 2005-10-29 devnull 
195 9f1fdc12 2005-10-29 devnull 	e->c1 = wingetec(w);
196 9f1fdc12 2005-10-29 devnull 	e->c2 = wingetec(w);
197 9f1fdc12 2005-10-29 devnull 	e->q0 = wingeten(w);
198 9f1fdc12 2005-10-29 devnull 	e->q1 = wingeten(w);
199 9f1fdc12 2005-10-29 devnull 	e->flag = wingeten(w);
200 9f1fdc12 2005-10-29 devnull 	e->nr = wingeten(w);
201 9f1fdc12 2005-10-29 devnull 	if(e->nr > EVENTSIZE)
202 9f1fdc12 2005-10-29 devnull 		error("event string too long");
203 9f1fdc12 2005-10-29 devnull 	e->nb = 0;
204 9f1fdc12 2005-10-29 devnull 	for(i=0; i<e->nr; i++){
205 9f1fdc12 2005-10-29 devnull 		e->r[i] = wingeter(w, e->b+e->nb, &nb);
206 9f1fdc12 2005-10-29 devnull 		e->nb += nb;
207 9f1fdc12 2005-10-29 devnull 	}
208 9f1fdc12 2005-10-29 devnull 	e->r[e->nr] = 0;
209 9f1fdc12 2005-10-29 devnull 	e->b[e->nb] = 0;
210 9f1fdc12 2005-10-29 devnull 	if(wingetec(w) != '\n')
211 9f1fdc12 2005-10-29 devnull 		error("event syntax error");
212 9f1fdc12 2005-10-29 devnull }
213 9f1fdc12 2005-10-29 devnull 
214 9f1fdc12 2005-10-29 devnull void
215 9f1fdc12 2005-10-29 devnull winwriteevent(Window *w, Event *e)
216 9f1fdc12 2005-10-29 devnull {
217 9f1fdc12 2005-10-29 devnull 	fsprint(w->event, "%c%c%d %d\n", e->c1, e->c2, e->q0, e->q1);
218 9f1fdc12 2005-10-29 devnull }
219 9f1fdc12 2005-10-29 devnull 
220 9f1fdc12 2005-10-29 devnull void
221 9f1fdc12 2005-10-29 devnull winread(Window *w, uint q0, uint q1, char *data)
222 9f1fdc12 2005-10-29 devnull {
223 9f1fdc12 2005-10-29 devnull 	int m, n, nr;
224 9f1fdc12 2005-10-29 devnull 	char buf[256];
225 9f1fdc12 2005-10-29 devnull 
226 9f1fdc12 2005-10-29 devnull 	if(w->addr == nil)
227 3f8c36d6 2006-02-09 devnull 		w->addr = winopenfile(w, "addr");
228 9f1fdc12 2005-10-29 devnull 	if(w->data == nil)
229 3f8c36d6 2006-02-09 devnull 		w->data = winopenfile(w, "data");
230 9f1fdc12 2005-10-29 devnull 	m = q0;
231 9f1fdc12 2005-10-29 devnull 	while(m < q1){
232 9f1fdc12 2005-10-29 devnull 		n = sprint(buf, "#%d", m);
233 9f1fdc12 2005-10-29 devnull 		if(fswrite(w->addr, buf, n) != n)
234 9f1fdc12 2005-10-29 devnull 			error("error writing addr: %r");
235 9f1fdc12 2005-10-29 devnull 		n = fsread(w->data, buf, sizeof buf);
236 9f1fdc12 2005-10-29 devnull 		if(n <= 0)
237 9f1fdc12 2005-10-29 devnull 			error("reading data: %r");
238 9f1fdc12 2005-10-29 devnull 		nr = utfnlen(buf, n);
239 9f1fdc12 2005-10-29 devnull 		while(m+nr >q1){
240 9f1fdc12 2005-10-29 devnull 			do; while(n>0 && (buf[--n]&0xC0)==0x80);
241 9f1fdc12 2005-10-29 devnull 			--nr;
242 9f1fdc12 2005-10-29 devnull 		}
243 9f1fdc12 2005-10-29 devnull 		if(n == 0)
244 9f1fdc12 2005-10-29 devnull 			break;
245 9f1fdc12 2005-10-29 devnull 		memmove(data, buf, n);
246 9f1fdc12 2005-10-29 devnull 		data += n;
247 9f1fdc12 2005-10-29 devnull 		*data = 0;
248 9f1fdc12 2005-10-29 devnull 		m += nr;
249 9f1fdc12 2005-10-29 devnull 	}
250 9f1fdc12 2005-10-29 devnull }
251 9f1fdc12 2005-10-29 devnull 
252 9f1fdc12 2005-10-29 devnull void
253 9f1fdc12 2005-10-29 devnull windormant(Window *w)
254 9f1fdc12 2005-10-29 devnull {
255 9f1fdc12 2005-10-29 devnull 	if(w->addr != nil){
256 9f1fdc12 2005-10-29 devnull 		fsclose(w->addr);
257 9f1fdc12 2005-10-29 devnull 		w->addr = nil;
258 9f1fdc12 2005-10-29 devnull 	}
259 9f1fdc12 2005-10-29 devnull 	if(w->body != nil){
260 9f1fdc12 2005-10-29 devnull 		fsclose(w->body);
261 9f1fdc12 2005-10-29 devnull 		w->body = nil;
262 9f1fdc12 2005-10-29 devnull 	}
263 9f1fdc12 2005-10-29 devnull 	if(w->data != nil){
264 9f1fdc12 2005-10-29 devnull 		fsclose(w->data);
265 9f1fdc12 2005-10-29 devnull 		w->data = nil;
266 9f1fdc12 2005-10-29 devnull 	}
267 9f1fdc12 2005-10-29 devnull }
268 9f1fdc12 2005-10-29 devnull 
269 9f1fdc12 2005-10-29 devnull 
270 9f1fdc12 2005-10-29 devnull int
271 9f1fdc12 2005-10-29 devnull windel(Window *w, int sure)
272 9f1fdc12 2005-10-29 devnull {
273 3f8c36d6 2006-02-09 devnull 	if(sure)
274 9f1fdc12 2005-10-29 devnull 		fswrite(w->ctl, "delete\n", 7);
275 3f8c36d6 2006-02-09 devnull 	else if(fswrite(w->ctl, "del\n", 4) != 4)
276 9f1fdc12 2005-10-29 devnull 		return 0;
277 9f1fdc12 2005-10-29 devnull 	/* event proc will die due to read error from event file */
278 9f1fdc12 2005-10-29 devnull 	windormant(w);
279 9f1fdc12 2005-10-29 devnull 	fsclose(w->ctl);
280 9f1fdc12 2005-10-29 devnull 	w->ctl = nil;
281 9f1fdc12 2005-10-29 devnull 	return 1;
282 9f1fdc12 2005-10-29 devnull }
283 9f1fdc12 2005-10-29 devnull 
284 9f1fdc12 2005-10-29 devnull void
285 9f1fdc12 2005-10-29 devnull winclean(Window *w)
286 9f1fdc12 2005-10-29 devnull {
287 9f1fdc12 2005-10-29 devnull 	ctlprint(w->ctl, "clean\n");
288 9f1fdc12 2005-10-29 devnull }
289 9f1fdc12 2005-10-29 devnull 
290 9f1fdc12 2005-10-29 devnull int
291 9f1fdc12 2005-10-29 devnull winsetaddr(Window *w, char *addr, int errok)
292 9f1fdc12 2005-10-29 devnull {
293 9f1fdc12 2005-10-29 devnull 	if(w->addr == nil)
294 3f8c36d6 2006-02-09 devnull 		w->addr = winopenfile(w, "addr");
295 9f1fdc12 2005-10-29 devnull 	if(fswrite(w->addr, addr, strlen(addr)) < 0){
296 9f1fdc12 2005-10-29 devnull 		if(!errok)
297 9f1fdc12 2005-10-29 devnull 			error("error writing addr(%s): %r", addr);
298 9f1fdc12 2005-10-29 devnull 		return 0;
299 9f1fdc12 2005-10-29 devnull 	}
300 9f1fdc12 2005-10-29 devnull 	return 1;
301 9f1fdc12 2005-10-29 devnull }
302 9f1fdc12 2005-10-29 devnull 
303 9f1fdc12 2005-10-29 devnull int
304 9f1fdc12 2005-10-29 devnull winselect(Window *w, char *addr, int errok)
305 9f1fdc12 2005-10-29 devnull {
306 9f1fdc12 2005-10-29 devnull 	if(winsetaddr(w, addr, errok)){
307 9f1fdc12 2005-10-29 devnull 		ctlprint(w->ctl, "dot=addr\n");
308 9f1fdc12 2005-10-29 devnull 		return 1;
309 9f1fdc12 2005-10-29 devnull 	}
310 9f1fdc12 2005-10-29 devnull 	return 0;
311 9f1fdc12 2005-10-29 devnull }
312 9f1fdc12 2005-10-29 devnull 
313 9f1fdc12 2005-10-29 devnull char*
314 9f1fdc12 2005-10-29 devnull winreadbody(Window *w, int *np)	/* can't use readfile because acme doesn't report the length */
315 9f1fdc12 2005-10-29 devnull {
316 9f1fdc12 2005-10-29 devnull 	char *s;
317 9f1fdc12 2005-10-29 devnull 	int m, na, n;
318 9f1fdc12 2005-10-29 devnull 
319 9f1fdc12 2005-10-29 devnull 	if(w->body != nil)
320 9f1fdc12 2005-10-29 devnull 		winclosebody(w);
321 9f1fdc12 2005-10-29 devnull 	winopenbody(w, OREAD);
322 9f1fdc12 2005-10-29 devnull 	s = nil;
323 9f1fdc12 2005-10-29 devnull 	na = 0;
324 9f1fdc12 2005-10-29 devnull 	n = 0;
325 9f1fdc12 2005-10-29 devnull 	for(;;){
326 9f1fdc12 2005-10-29 devnull 		if(na < n+512){
327 9f1fdc12 2005-10-29 devnull 			na += 1024;
328 9f1fdc12 2005-10-29 devnull 			s = realloc(s, na+1);
329 9f1fdc12 2005-10-29 devnull 		}
330 9f1fdc12 2005-10-29 devnull 		m = fsread(w->body, s+n, na-n);
331 9f1fdc12 2005-10-29 devnull 		if(m <= 0)
332 9f1fdc12 2005-10-29 devnull 			break;
333 9f1fdc12 2005-10-29 devnull 		n += m;
334 9f1fdc12 2005-10-29 devnull 	}
335 9f1fdc12 2005-10-29 devnull 	s[n] = 0;
336 9f1fdc12 2005-10-29 devnull 	winclosebody(w);
337 9f1fdc12 2005-10-29 devnull 	*np = n;
338 9f1fdc12 2005-10-29 devnull 	return s;
339 9f1fdc12 2005-10-29 devnull }
340 9f1fdc12 2005-10-29 devnull 
341 9f1fdc12 2005-10-29 devnull char*
342 9f1fdc12 2005-10-29 devnull winselection(Window *w)
343 9f1fdc12 2005-10-29 devnull {
344 9f1fdc12 2005-10-29 devnull 	int m, n;
345 9f1fdc12 2005-10-29 devnull 	char *buf;
346 9f1fdc12 2005-10-29 devnull 	char tmp[256];
347 9f1fdc12 2005-10-29 devnull 	CFid* fid;
348 9f1fdc12 2005-10-29 devnull 
349 3f8c36d6 2006-02-09 devnull 	fid = winopenfile1(w, "rdsel", OREAD);
350 9f1fdc12 2005-10-29 devnull 	if(fid == nil)
351 9f1fdc12 2005-10-29 devnull 		error("can't open rdsel: %r");
352 9f1fdc12 2005-10-29 devnull 	n = 0;
353 9f1fdc12 2005-10-29 devnull 	buf = nil;
354 9f1fdc12 2005-10-29 devnull 	for(;;){
355 9f1fdc12 2005-10-29 devnull 		m = fsread(fid, tmp, sizeof tmp);
356 9f1fdc12 2005-10-29 devnull 		if(m <= 0)
357 9f1fdc12 2005-10-29 devnull 			break;
358 9f1fdc12 2005-10-29 devnull 		buf = erealloc(buf, n+m+1);
359 9f1fdc12 2005-10-29 devnull 		memmove(buf+n, tmp, m);
360 9f1fdc12 2005-10-29 devnull 		n += m;
361 9f1fdc12 2005-10-29 devnull 		buf[n] = '\0';
362 9f1fdc12 2005-10-29 devnull 	}
363 9f1fdc12 2005-10-29 devnull 	fsclose(fid);
364 9f1fdc12 2005-10-29 devnull 	return buf;
365 9f1fdc12 2005-10-29 devnull }