1 76193d7c 2003-09-30 devnull #include "sam.h"
  2 76193d7c 2003-09-30 devnull 
  3 76193d7c 2003-09-30 devnull Rune	genbuf[BLOCKSIZE];
  4 76193d7c 2003-09-30 devnull int	io;
  5 76193d7c 2003-09-30 devnull int	panicking;
  6 76193d7c 2003-09-30 devnull int	rescuing;
  7 76193d7c 2003-09-30 devnull String	genstr;
  8 76193d7c 2003-09-30 devnull String	rhs;
  9 76193d7c 2003-09-30 devnull String	curwd;
 10 76193d7c 2003-09-30 devnull String	cmdstr;
 11 76193d7c 2003-09-30 devnull Rune	empty[] = { 0 };
 12 76193d7c 2003-09-30 devnull char	*genc;
 13 76193d7c 2003-09-30 devnull File	*curfile;
 14 76193d7c 2003-09-30 devnull File	*flist;
 15 76193d7c 2003-09-30 devnull File	*cmd;
 16 76193d7c 2003-09-30 devnull jmp_buf	mainloop;
 17 76193d7c 2003-09-30 devnull List	tempfile;
 18 76193d7c 2003-09-30 devnull int	quitok = TRUE;
 19 76193d7c 2003-09-30 devnull int	downloaded;
 20 76193d7c 2003-09-30 devnull int	dflag;
 21 76193d7c 2003-09-30 devnull int	Rflag;
 22 76193d7c 2003-09-30 devnull char	*machine;
 23 76193d7c 2003-09-30 devnull char	*home;
 24 76193d7c 2003-09-30 devnull int	bpipeok;
 25 76193d7c 2003-09-30 devnull int	termlocked;
 26 76193d7c 2003-09-30 devnull char	*samterm = SAMTERM;
 27 76193d7c 2003-09-30 devnull char	*rsamname = RSAM;
 28 76193d7c 2003-09-30 devnull File	*lastfile;
 29 76193d7c 2003-09-30 devnull Disk	*disk;
 30 76193d7c 2003-09-30 devnull long	seq;
 31 76193d7c 2003-09-30 devnull 
 32 76193d7c 2003-09-30 devnull Rune	baddir[] = { '<', 'b', 'a', 'd', 'd', 'i', 'r', '>', '\n'};
 33 76193d7c 2003-09-30 devnull 
 34 76193d7c 2003-09-30 devnull void	usage(void);
 35 76193d7c 2003-09-30 devnull 
 36 ffcafb8c 2003-10-11 devnull extern int notify(void(*)(void*,char*));
 37 ffcafb8c 2003-10-11 devnull 
 38 ffcafb8c 2003-10-11 devnull int
 39 ffcafb8c 2003-10-11 devnull main(int argc, char *argv[])
 40 76193d7c 2003-09-30 devnull {
 41 76193d7c 2003-09-30 devnull 	int i;
 42 76193d7c 2003-09-30 devnull 	String *t;
 43 76193d7c 2003-09-30 devnull 	char **ap, **arg;
 44 76193d7c 2003-09-30 devnull 
 45 76193d7c 2003-09-30 devnull 	arg = argv++;
 46 76193d7c 2003-09-30 devnull 	ap = argv;
 47 76193d7c 2003-09-30 devnull 	while(argc>1 && argv[0] && argv[0][0]=='-'){
 48 76193d7c 2003-09-30 devnull 		switch(argv[0][1]){
 49 76193d7c 2003-09-30 devnull 		case 'd':
 50 76193d7c 2003-09-30 devnull 			dflag++;
 51 76193d7c 2003-09-30 devnull 			break;
 52 76193d7c 2003-09-30 devnull 
 53 76193d7c 2003-09-30 devnull 		case 'r':
 54 76193d7c 2003-09-30 devnull 			--argc, argv++;
 55 76193d7c 2003-09-30 devnull 			if(argc == 1)
 56 76193d7c 2003-09-30 devnull 				usage();
 57 76193d7c 2003-09-30 devnull 			machine = *argv;
 58 76193d7c 2003-09-30 devnull 			break;
 59 76193d7c 2003-09-30 devnull 
 60 76193d7c 2003-09-30 devnull 		case 'R':
 61 76193d7c 2003-09-30 devnull 			Rflag++;
 62 76193d7c 2003-09-30 devnull 			break;
 63 76193d7c 2003-09-30 devnull 
 64 76193d7c 2003-09-30 devnull 		case 't':
 65 76193d7c 2003-09-30 devnull 			--argc, argv++;
 66 76193d7c 2003-09-30 devnull 			if(argc == 1)
 67 76193d7c 2003-09-30 devnull 				usage();
 68 76193d7c 2003-09-30 devnull 			samterm = *argv;
 69 76193d7c 2003-09-30 devnull 			break;
 70 76193d7c 2003-09-30 devnull 
 71 76193d7c 2003-09-30 devnull 		case 's':
 72 76193d7c 2003-09-30 devnull 			--argc, argv++;
 73 76193d7c 2003-09-30 devnull 			if(argc == 1)
 74 76193d7c 2003-09-30 devnull 				usage();
 75 76193d7c 2003-09-30 devnull 			rsamname = *argv;
 76 76193d7c 2003-09-30 devnull 			break;
 77 76193d7c 2003-09-30 devnull 
 78 76193d7c 2003-09-30 devnull 		case 'x':       /* x11 option - strip the x */
 79 76193d7c 2003-09-30 devnull                         strcpy(*argv+1, *argv+2);
 80 76193d7c 2003-09-30 devnull                         *ap++ = *argv++;
 81 76193d7c 2003-09-30 devnull                         *ap++ = *argv;
 82 76193d7c 2003-09-30 devnull                         argc--;
 83 76193d7c 2003-09-30 devnull                         break;
 84 76193d7c 2003-09-30 devnull 
 85 76193d7c 2003-09-30 devnull 		default:
 86 76193d7c 2003-09-30 devnull 			dprint("sam: unknown flag %c\n", argv[0][1]);
 87 76193d7c 2003-09-30 devnull 			exits("usage");
 88 76193d7c 2003-09-30 devnull 		}
 89 76193d7c 2003-09-30 devnull 		--argc, argv++;
 90 76193d7c 2003-09-30 devnull 	}
 91 76193d7c 2003-09-30 devnull 	Strinit(&cmdstr);
 92 76193d7c 2003-09-30 devnull 	Strinit0(&lastpat);
 93 76193d7c 2003-09-30 devnull 	Strinit0(&lastregexp);
 94 76193d7c 2003-09-30 devnull 	Strinit0(&genstr);
 95 76193d7c 2003-09-30 devnull 	Strinit0(&rhs);
 96 76193d7c 2003-09-30 devnull 	Strinit0(&curwd);
 97 76193d7c 2003-09-30 devnull 	tempfile.listptr = emalloc(1);	/* so it can be freed later */
 98 76193d7c 2003-09-30 devnull 	Strinit0(&plan9cmd);
 99 76193d7c 2003-09-30 devnull 	home = getenv(HOME);
100 76193d7c 2003-09-30 devnull 	disk = diskinit();
101 76193d7c 2003-09-30 devnull 	if(home == 0)
102 76193d7c 2003-09-30 devnull 		home = "/";
103 76193d7c 2003-09-30 devnull 	if(!dflag)
104 76193d7c 2003-09-30 devnull 		startup(machine, Rflag, arg, ap);
105 76193d7c 2003-09-30 devnull 	notify(notifyf);
106 76193d7c 2003-09-30 devnull 	getcurwd();
107 76193d7c 2003-09-30 devnull 	if(argc>1){
108 76193d7c 2003-09-30 devnull 		for(i=0; i<argc-1; i++){
109 76193d7c 2003-09-30 devnull 			if(!setjmp(mainloop)){
110 76193d7c 2003-09-30 devnull 				t = tmpcstr(argv[i]);
111 76193d7c 2003-09-30 devnull 				Straddc(t, '\0');
112 76193d7c 2003-09-30 devnull 				Strduplstr(&genstr, t);
113 76193d7c 2003-09-30 devnull 				freetmpstr(t);
114 76193d7c 2003-09-30 devnull 				fixname(&genstr);
115 76193d7c 2003-09-30 devnull 				logsetname(newfile(), &genstr);
116 76193d7c 2003-09-30 devnull 			}
117 76193d7c 2003-09-30 devnull 		}
118 76193d7c 2003-09-30 devnull 	}else if(!downloaded)
119 76193d7c 2003-09-30 devnull 		newfile();
120 76193d7c 2003-09-30 devnull 	seq++;
121 76193d7c 2003-09-30 devnull 	if(file.nused)
122 76193d7c 2003-09-30 devnull 		current(file.filepptr[0]);
123 76193d7c 2003-09-30 devnull 	setjmp(mainloop);
124 76193d7c 2003-09-30 devnull 	cmdloop();
125 76193d7c 2003-09-30 devnull 	trytoquit();	/* if we already q'ed, quitok will be TRUE */
126 76193d7c 2003-09-30 devnull 	exits(0);
127 ffcafb8c 2003-10-11 devnull 	return 0;
128 76193d7c 2003-09-30 devnull }
129 76193d7c 2003-09-30 devnull 
130 76193d7c 2003-09-30 devnull void
131 76193d7c 2003-09-30 devnull usage(void)
132 76193d7c 2003-09-30 devnull {
133 76193d7c 2003-09-30 devnull 	dprint("usage: sam [-d] [-t samterm] [-s sam name] -r machine\n");
134 76193d7c 2003-09-30 devnull 	exits("usage");
135 76193d7c 2003-09-30 devnull }
136 76193d7c 2003-09-30 devnull 
137 76193d7c 2003-09-30 devnull void
138 76193d7c 2003-09-30 devnull rescue(void)
139 76193d7c 2003-09-30 devnull {
140 76193d7c 2003-09-30 devnull 	int i, nblank = 0;
141 76193d7c 2003-09-30 devnull 	File *f;
142 76193d7c 2003-09-30 devnull 	char *c;
143 76193d7c 2003-09-30 devnull 	char buf[256];
144 f7012583 2003-11-25 devnull 	char *root;
145 76193d7c 2003-09-30 devnull 
146 76193d7c 2003-09-30 devnull 	if(rescuing++)
147 76193d7c 2003-09-30 devnull 		return;
148 76193d7c 2003-09-30 devnull 	io = -1;
149 76193d7c 2003-09-30 devnull 	for(i=0; i<file.nused; i++){
150 76193d7c 2003-09-30 devnull 		f = file.filepptr[i];
151 522b0689 2003-09-30 devnull 		if(f==cmd || f->b.nc==0 || !fileisdirty(f))
152 76193d7c 2003-09-30 devnull 			continue;
153 76193d7c 2003-09-30 devnull 		if(io == -1){
154 76193d7c 2003-09-30 devnull 			sprint(buf, "%s/sam.save", home);
155 76193d7c 2003-09-30 devnull 			io = create(buf, 1, 0777);
156 76193d7c 2003-09-30 devnull 			if(io<0)
157 76193d7c 2003-09-30 devnull 				return;
158 76193d7c 2003-09-30 devnull 		}
159 76193d7c 2003-09-30 devnull 		if(f->name.s[0]){
160 76193d7c 2003-09-30 devnull 			c = Strtoc(&f->name);
161 76193d7c 2003-09-30 devnull 			strncpy(buf, c, sizeof buf-1);
162 76193d7c 2003-09-30 devnull 			buf[sizeof buf-1] = 0;
163 76193d7c 2003-09-30 devnull 			free(c);
164 76193d7c 2003-09-30 devnull 		}else
165 76193d7c 2003-09-30 devnull 			sprint(buf, "nameless.%d", nblank++);
166 f7012583 2003-11-25 devnull 		root = getenv("PLAN9");
167 f7012583 2003-11-25 devnull 		if(root == nil)
168 f7012583 2003-11-25 devnull 			root = "/usr/local/plan9";
169 f7012583 2003-11-25 devnull 		fprint(io, "#!/bin/sh\n%s/bin/samsave '%s' $* <<'---%s'\n", root, buf, buf);
170 522b0689 2003-09-30 devnull 		addr.r.p1 = 0, addr.r.p2 = f->b.nc;
171 76193d7c 2003-09-30 devnull 		writeio(f);
172 76193d7c 2003-09-30 devnull 		fprint(io, "\n---%s\n", (char *)buf);
173 76193d7c 2003-09-30 devnull 	}
174 76193d7c 2003-09-30 devnull }
175 76193d7c 2003-09-30 devnull 
176 76193d7c 2003-09-30 devnull void
177 76193d7c 2003-09-30 devnull panic(char *s)
178 76193d7c 2003-09-30 devnull {
179 76193d7c 2003-09-30 devnull 	int wasd;
180 76193d7c 2003-09-30 devnull 
181 76193d7c 2003-09-30 devnull 	if(!panicking++ && !setjmp(mainloop)){
182 76193d7c 2003-09-30 devnull 		wasd = downloaded;
183 76193d7c 2003-09-30 devnull 		downloaded = 0;
184 76193d7c 2003-09-30 devnull 		dprint("sam: panic: %s: %r\n", s);
185 76193d7c 2003-09-30 devnull 		if(wasd)
186 76193d7c 2003-09-30 devnull 			fprint(2, "sam: panic: %s: %r\n", s);
187 76193d7c 2003-09-30 devnull 		rescue();
188 76193d7c 2003-09-30 devnull 		abort();
189 76193d7c 2003-09-30 devnull 	}
190 76193d7c 2003-09-30 devnull }
191 76193d7c 2003-09-30 devnull 
192 76193d7c 2003-09-30 devnull void
193 76193d7c 2003-09-30 devnull hiccough(char *s)
194 76193d7c 2003-09-30 devnull {
195 76193d7c 2003-09-30 devnull 	File *f;
196 76193d7c 2003-09-30 devnull 	int i;
197 76193d7c 2003-09-30 devnull 
198 76193d7c 2003-09-30 devnull 	if(rescuing)
199 76193d7c 2003-09-30 devnull 		exits("rescue");
200 76193d7c 2003-09-30 devnull 	if(s)
201 76193d7c 2003-09-30 devnull 		dprint("%s\n", s);
202 76193d7c 2003-09-30 devnull 	resetcmd();
203 76193d7c 2003-09-30 devnull 	resetxec();
204 76193d7c 2003-09-30 devnull 	resetsys();
205 76193d7c 2003-09-30 devnull 	if(io > 0)
206 76193d7c 2003-09-30 devnull 		close(io);
207 76193d7c 2003-09-30 devnull 
208 76193d7c 2003-09-30 devnull 	/*
209 76193d7c 2003-09-30 devnull 	 * back out any logged changes & restore old sequences
210 76193d7c 2003-09-30 devnull 	 */
211 76193d7c 2003-09-30 devnull 	for(i=0; i<file.nused; i++){
212 76193d7c 2003-09-30 devnull 		f = file.filepptr[i];
213 76193d7c 2003-09-30 devnull 		if(f==cmd)
214 76193d7c 2003-09-30 devnull 			continue;
215 76193d7c 2003-09-30 devnull 		if(f->seq==seq){
216 76193d7c 2003-09-30 devnull 			bufdelete(&f->epsilon, 0, f->epsilon.nc);
217 76193d7c 2003-09-30 devnull 			f->seq = f->prevseq;
218 76193d7c 2003-09-30 devnull 			f->dot.r = f->prevdot;
219 76193d7c 2003-09-30 devnull 			f->mark = f->prevmark;
220 76193d7c 2003-09-30 devnull 			state(f, f->prevmod ? Dirty: Clean);
221 76193d7c 2003-09-30 devnull 		}
222 76193d7c 2003-09-30 devnull 	}
223 76193d7c 2003-09-30 devnull 
224 76193d7c 2003-09-30 devnull 	update();
225 76193d7c 2003-09-30 devnull 	if (curfile) {
226 76193d7c 2003-09-30 devnull 		if (curfile->unread)
227 76193d7c 2003-09-30 devnull 			curfile->unread = FALSE;
228 76193d7c 2003-09-30 devnull 		else if (downloaded)
229 76193d7c 2003-09-30 devnull 			outTs(Hcurrent, curfile->tag);
230 76193d7c 2003-09-30 devnull 	}
231 76193d7c 2003-09-30 devnull 	longjmp(mainloop, 1);
232 76193d7c 2003-09-30 devnull }
233 76193d7c 2003-09-30 devnull 
234 76193d7c 2003-09-30 devnull void
235 76193d7c 2003-09-30 devnull intr(void)
236 76193d7c 2003-09-30 devnull {
237 76193d7c 2003-09-30 devnull 	error(Eintr);
238 76193d7c 2003-09-30 devnull }
239 76193d7c 2003-09-30 devnull 
240 76193d7c 2003-09-30 devnull void
241 76193d7c 2003-09-30 devnull trytoclose(File *f)
242 76193d7c 2003-09-30 devnull {
243 76193d7c 2003-09-30 devnull 	char *t;
244 76193d7c 2003-09-30 devnull 	char buf[256];
245 76193d7c 2003-09-30 devnull 
246 76193d7c 2003-09-30 devnull 	if(f == cmd)	/* possible? */
247 76193d7c 2003-09-30 devnull 		return;
248 76193d7c 2003-09-30 devnull 	if(f->deleted)
249 76193d7c 2003-09-30 devnull 		return;
250 76193d7c 2003-09-30 devnull 	if(fileisdirty(f) && !f->closeok){
251 76193d7c 2003-09-30 devnull 		f->closeok = TRUE;
252 76193d7c 2003-09-30 devnull 		if(f->name.s[0]){
253 76193d7c 2003-09-30 devnull 			t = Strtoc(&f->name);
254 76193d7c 2003-09-30 devnull 			strncpy(buf, t, sizeof buf-1);
255 76193d7c 2003-09-30 devnull 			free(t);
256 76193d7c 2003-09-30 devnull 		}else
257 76193d7c 2003-09-30 devnull 			strcpy(buf, "nameless file");
258 76193d7c 2003-09-30 devnull 		error_s(Emodified, buf);
259 76193d7c 2003-09-30 devnull 	}
260 76193d7c 2003-09-30 devnull 	f->deleted = TRUE;
261 76193d7c 2003-09-30 devnull }
262 76193d7c 2003-09-30 devnull 
263 76193d7c 2003-09-30 devnull void
264 76193d7c 2003-09-30 devnull trytoquit(void)
265 76193d7c 2003-09-30 devnull {
266 76193d7c 2003-09-30 devnull 	int c;
267 76193d7c 2003-09-30 devnull 	File *f;
268 76193d7c 2003-09-30 devnull 
269 76193d7c 2003-09-30 devnull 	if(!quitok){
270 76193d7c 2003-09-30 devnull 		for(c = 0; c<file.nused; c++){
271 76193d7c 2003-09-30 devnull 			f = file.filepptr[c];
272 76193d7c 2003-09-30 devnull 			if(f!=cmd && fileisdirty(f)){
273 76193d7c 2003-09-30 devnull 				quitok = TRUE;
274 76193d7c 2003-09-30 devnull 				eof = FALSE;
275 76193d7c 2003-09-30 devnull 				error(Echanges);
276 76193d7c 2003-09-30 devnull 			}
277 76193d7c 2003-09-30 devnull 		}
278 76193d7c 2003-09-30 devnull 	}
279 76193d7c 2003-09-30 devnull }
280 76193d7c 2003-09-30 devnull 
281 76193d7c 2003-09-30 devnull void
282 76193d7c 2003-09-30 devnull load(File *f)
283 76193d7c 2003-09-30 devnull {
284 76193d7c 2003-09-30 devnull 	Address saveaddr;
285 76193d7c 2003-09-30 devnull 
286 76193d7c 2003-09-30 devnull 	Strduplstr(&genstr, &f->name);
287 76193d7c 2003-09-30 devnull 	filename(f);
288 76193d7c 2003-09-30 devnull 	if(f->name.s[0]){
289 76193d7c 2003-09-30 devnull 		saveaddr = addr;
290 76193d7c 2003-09-30 devnull 		edit(f, 'I');
291 76193d7c 2003-09-30 devnull 		addr = saveaddr;
292 76193d7c 2003-09-30 devnull 	}else{
293 76193d7c 2003-09-30 devnull 		f->unread = 0;
294 76193d7c 2003-09-30 devnull 		f->cleanseq = f->seq;
295 76193d7c 2003-09-30 devnull 	}
296 76193d7c 2003-09-30 devnull 
297 76193d7c 2003-09-30 devnull 	fileupdate(f, TRUE, TRUE);
298 76193d7c 2003-09-30 devnull }
299 76193d7c 2003-09-30 devnull 
300 76193d7c 2003-09-30 devnull void
301 76193d7c 2003-09-30 devnull cmdupdate(void)
302 76193d7c 2003-09-30 devnull {
303 76193d7c 2003-09-30 devnull 	if(cmd && cmd->seq!=0){
304 76193d7c 2003-09-30 devnull 		fileupdate(cmd, FALSE, downloaded);
305 522b0689 2003-09-30 devnull 		cmd->dot.r.p1 = cmd->dot.r.p2 = cmd->b.nc;
306 76193d7c 2003-09-30 devnull 		telldot(cmd);
307 76193d7c 2003-09-30 devnull 	}
308 76193d7c 2003-09-30 devnull }
309 76193d7c 2003-09-30 devnull 
310 76193d7c 2003-09-30 devnull void
311 76193d7c 2003-09-30 devnull delete(File *f)
312 76193d7c 2003-09-30 devnull {
313 76193d7c 2003-09-30 devnull 	if(downloaded && f->rasp)
314 76193d7c 2003-09-30 devnull 		outTs(Hclose, f->tag);
315 76193d7c 2003-09-30 devnull 	delfile(f);
316 76193d7c 2003-09-30 devnull 	if(f == curfile)
317 76193d7c 2003-09-30 devnull 		current(0);
318 76193d7c 2003-09-30 devnull }
319 76193d7c 2003-09-30 devnull 
320 76193d7c 2003-09-30 devnull void
321 76193d7c 2003-09-30 devnull update(void)
322 76193d7c 2003-09-30 devnull {
323 76193d7c 2003-09-30 devnull 	int i, anymod;
324 76193d7c 2003-09-30 devnull 	File *f;
325 76193d7c 2003-09-30 devnull 
326 76193d7c 2003-09-30 devnull 	settempfile();
327 76193d7c 2003-09-30 devnull 	for(anymod = i=0; i<tempfile.nused; i++){
328 76193d7c 2003-09-30 devnull 		f = tempfile.filepptr[i];
329 76193d7c 2003-09-30 devnull 		if(f==cmd)	/* cmd gets done in main() */
330 76193d7c 2003-09-30 devnull 			continue;
331 76193d7c 2003-09-30 devnull 		if(f->deleted) {
332 76193d7c 2003-09-30 devnull 			delete(f);
333 76193d7c 2003-09-30 devnull 			continue;
334 76193d7c 2003-09-30 devnull 		}
335 76193d7c 2003-09-30 devnull 		if(f->seq==seq && fileupdate(f, FALSE, downloaded))
336 76193d7c 2003-09-30 devnull 			anymod++;
337 76193d7c 2003-09-30 devnull 		if(f->rasp)
338 76193d7c 2003-09-30 devnull 			telldot(f);
339 76193d7c 2003-09-30 devnull 	}
340 76193d7c 2003-09-30 devnull 	if(anymod)
341 76193d7c 2003-09-30 devnull 		seq++;
342 76193d7c 2003-09-30 devnull }
343 76193d7c 2003-09-30 devnull 
344 76193d7c 2003-09-30 devnull File *
345 76193d7c 2003-09-30 devnull current(File *f)
346 76193d7c 2003-09-30 devnull {
347 76193d7c 2003-09-30 devnull 	return curfile = f;
348 76193d7c 2003-09-30 devnull }
349 76193d7c 2003-09-30 devnull 
350 76193d7c 2003-09-30 devnull void
351 76193d7c 2003-09-30 devnull edit(File *f, int cmd)
352 76193d7c 2003-09-30 devnull {
353 76193d7c 2003-09-30 devnull 	int empty = TRUE;
354 76193d7c 2003-09-30 devnull 	Posn p;
355 76193d7c 2003-09-30 devnull 	int nulls;
356 76193d7c 2003-09-30 devnull 
357 76193d7c 2003-09-30 devnull 	if(cmd == 'r')
358 76193d7c 2003-09-30 devnull 		logdelete(f, addr.r.p1, addr.r.p2);
359 76193d7c 2003-09-30 devnull 	if(cmd=='e' || cmd=='I'){
360 522b0689 2003-09-30 devnull 		logdelete(f, (Posn)0, f->b.nc);
361 522b0689 2003-09-30 devnull 		addr.r.p2 = f->b.nc;
362 522b0689 2003-09-30 devnull 	}else if(f->b.nc!=0 || (f->name.s[0] && Strcmp(&genstr, &f->name)!=0))
363 76193d7c 2003-09-30 devnull 		empty = FALSE;
364 76193d7c 2003-09-30 devnull 	if((io = open(genc, OREAD))<0) {
365 76193d7c 2003-09-30 devnull 		if (curfile && curfile->unread)
366 76193d7c 2003-09-30 devnull 			curfile->unread = FALSE;
367 76193d7c 2003-09-30 devnull 		error_r(Eopen, genc);
368 76193d7c 2003-09-30 devnull 	}
369 76193d7c 2003-09-30 devnull 	p = readio(f, &nulls, empty, TRUE);
370 76193d7c 2003-09-30 devnull 	closeio((cmd=='e' || cmd=='I')? -1 : p);
371 76193d7c 2003-09-30 devnull 	if(cmd == 'r')
372 76193d7c 2003-09-30 devnull 		f->ndot.r.p1 = addr.r.p2, f->ndot.r.p2 = addr.r.p2+p;
373 76193d7c 2003-09-30 devnull 	else
374 76193d7c 2003-09-30 devnull 		f->ndot.r.p1 = f->ndot.r.p2 = 0;
375 76193d7c 2003-09-30 devnull 	f->closeok = empty;
376 76193d7c 2003-09-30 devnull 	if (quitok)
377 76193d7c 2003-09-30 devnull 		quitok = empty;
378 76193d7c 2003-09-30 devnull 	else
379 76193d7c 2003-09-30 devnull 		quitok = FALSE;
380 76193d7c 2003-09-30 devnull 	state(f, empty && !nulls? Clean : Dirty);
381 76193d7c 2003-09-30 devnull 	if(empty && !nulls)
382 76193d7c 2003-09-30 devnull 		f->cleanseq = f->seq;
383 76193d7c 2003-09-30 devnull 	if(cmd == 'e')
384 76193d7c 2003-09-30 devnull 		filename(f);
385 76193d7c 2003-09-30 devnull }
386 76193d7c 2003-09-30 devnull 
387 76193d7c 2003-09-30 devnull int
388 76193d7c 2003-09-30 devnull getname(File *f, String *s, int save)
389 76193d7c 2003-09-30 devnull {
390 76193d7c 2003-09-30 devnull 	int c, i;
391 76193d7c 2003-09-30 devnull 
392 76193d7c 2003-09-30 devnull 	Strzero(&genstr);
393 76193d7c 2003-09-30 devnull 	if(genc){
394 76193d7c 2003-09-30 devnull 		free(genc);
395 76193d7c 2003-09-30 devnull 		genc = 0;
396 76193d7c 2003-09-30 devnull 	}
397 76193d7c 2003-09-30 devnull 	if(s==0 || (c = s->s[0])==0){		/* no name provided */
398 76193d7c 2003-09-30 devnull 		if(f)
399 76193d7c 2003-09-30 devnull 			Strduplstr(&genstr, &f->name);
400 76193d7c 2003-09-30 devnull 		goto Return;
401 76193d7c 2003-09-30 devnull 	}
402 76193d7c 2003-09-30 devnull 	if(c!=' ' && c!='\t')
403 76193d7c 2003-09-30 devnull 		error(Eblank);
404 76193d7c 2003-09-30 devnull 	for(i=0; (c=s->s[i])==' ' || c=='\t'; i++)
405 76193d7c 2003-09-30 devnull 		;
406 76193d7c 2003-09-30 devnull 	while(s->s[i] > ' ')
407 76193d7c 2003-09-30 devnull 		Straddc(&genstr, s->s[i++]);
408 76193d7c 2003-09-30 devnull 	if(s->s[i])
409 76193d7c 2003-09-30 devnull 		error(Enewline);
410 76193d7c 2003-09-30 devnull 	fixname(&genstr);
411 76193d7c 2003-09-30 devnull 	if(f && (save || f->name.s[0]==0)){
412 76193d7c 2003-09-30 devnull 		logsetname(f, &genstr);
413 76193d7c 2003-09-30 devnull 		if(Strcmp(&f->name, &genstr)){
414 76193d7c 2003-09-30 devnull 			quitok = f->closeok = FALSE;
415 76193d7c 2003-09-30 devnull 			f->qidpath = 0;
416 76193d7c 2003-09-30 devnull 			f->mtime = 0;
417 76193d7c 2003-09-30 devnull 			state(f, Dirty); /* if it's 'e', fix later */
418 76193d7c 2003-09-30 devnull 		}
419 76193d7c 2003-09-30 devnull 	}
420 76193d7c 2003-09-30 devnull     Return:
421 76193d7c 2003-09-30 devnull 	genc = Strtoc(&genstr);
422 76193d7c 2003-09-30 devnull 	i = genstr.n;
423 76193d7c 2003-09-30 devnull 	if(i && genstr.s[i-1]==0)
424 76193d7c 2003-09-30 devnull 		i--;
425 76193d7c 2003-09-30 devnull 	return i;	/* strlen(name) */
426 76193d7c 2003-09-30 devnull }
427 76193d7c 2003-09-30 devnull 
428 76193d7c 2003-09-30 devnull void
429 76193d7c 2003-09-30 devnull filename(File *f)
430 76193d7c 2003-09-30 devnull {
431 76193d7c 2003-09-30 devnull 	if(genc)
432 76193d7c 2003-09-30 devnull 		free(genc);
433 76193d7c 2003-09-30 devnull 	genc = Strtoc(&genstr);
434 76193d7c 2003-09-30 devnull 	dprint("%c%c%c %s\n", " '"[f->mod],
435 76193d7c 2003-09-30 devnull 		"-+"[f->rasp!=0], " ."[f==curfile], genc);
436 76193d7c 2003-09-30 devnull }
437 76193d7c 2003-09-30 devnull 
438 76193d7c 2003-09-30 devnull void
439 76193d7c 2003-09-30 devnull undostep(File *f, int isundo)
440 76193d7c 2003-09-30 devnull {
441 76193d7c 2003-09-30 devnull 	uint p1, p2;
442 76193d7c 2003-09-30 devnull 	int mod;
443 76193d7c 2003-09-30 devnull 
444 76193d7c 2003-09-30 devnull 	mod = f->mod;
445 76193d7c 2003-09-30 devnull 	fileundo(f, isundo, 1, &p1, &p2, TRUE);
446 76193d7c 2003-09-30 devnull 	f->ndot = f->dot;
447 76193d7c 2003-09-30 devnull 	if(f->mod){
448 76193d7c 2003-09-30 devnull 		f->closeok = 0;
449 76193d7c 2003-09-30 devnull 		quitok = 0;
450 76193d7c 2003-09-30 devnull 	}else
451 76193d7c 2003-09-30 devnull 		f->closeok = 1;
452 76193d7c 2003-09-30 devnull 
453 76193d7c 2003-09-30 devnull 	if(f->mod != mod){
454 76193d7c 2003-09-30 devnull 		f->mod = mod;
455 76193d7c 2003-09-30 devnull 		if(mod)
456 76193d7c 2003-09-30 devnull 			mod = Clean;
457 76193d7c 2003-09-30 devnull 		else
458 76193d7c 2003-09-30 devnull 			mod = Dirty;
459 76193d7c 2003-09-30 devnull 		state(f, mod);
460 76193d7c 2003-09-30 devnull 	}
461 76193d7c 2003-09-30 devnull }
462 76193d7c 2003-09-30 devnull 
463 76193d7c 2003-09-30 devnull int
464 76193d7c 2003-09-30 devnull undo(int isundo)
465 76193d7c 2003-09-30 devnull {
466 76193d7c 2003-09-30 devnull 	File *f;
467 76193d7c 2003-09-30 devnull 	int i;
468 76193d7c 2003-09-30 devnull 	Mod max;
469 76193d7c 2003-09-30 devnull 
470 76193d7c 2003-09-30 devnull 	max = undoseq(curfile, isundo);
471 76193d7c 2003-09-30 devnull 	if(max == 0)
472 76193d7c 2003-09-30 devnull 		return 0;
473 76193d7c 2003-09-30 devnull 	settempfile();
474 76193d7c 2003-09-30 devnull 	for(i = 0; i<tempfile.nused; i++){
475 76193d7c 2003-09-30 devnull 		f = tempfile.filepptr[i];
476 76193d7c 2003-09-30 devnull 		if(f!=cmd && undoseq(f, isundo)==max)
477 76193d7c 2003-09-30 devnull 			undostep(f, isundo);
478 76193d7c 2003-09-30 devnull 	}
479 76193d7c 2003-09-30 devnull 	return 1;
480 76193d7c 2003-09-30 devnull }
481 76193d7c 2003-09-30 devnull 
482 76193d7c 2003-09-30 devnull int
483 76193d7c 2003-09-30 devnull readcmd(String *s)
484 76193d7c 2003-09-30 devnull {
485 76193d7c 2003-09-30 devnull 	int retcode;
486 76193d7c 2003-09-30 devnull 
487 76193d7c 2003-09-30 devnull 	if(flist != 0)
488 76193d7c 2003-09-30 devnull 		fileclose(flist);
489 76193d7c 2003-09-30 devnull 	flist = fileopen();
490 76193d7c 2003-09-30 devnull 
491 522b0689 2003-09-30 devnull 	addr.r.p1 = 0, addr.r.p2 = flist->b.nc;
492 76193d7c 2003-09-30 devnull 	retcode = plan9(flist, '<', s, FALSE);
493 76193d7c 2003-09-30 devnull 	fileupdate(flist, FALSE, FALSE);
494 76193d7c 2003-09-30 devnull 	flist->seq = 0;
495 522b0689 2003-09-30 devnull 	if (flist->b.nc > BLOCKSIZE)
496 76193d7c 2003-09-30 devnull 		error(Etoolong);
497 76193d7c 2003-09-30 devnull 	Strzero(&genstr);
498 522b0689 2003-09-30 devnull 	Strinsure(&genstr, flist->b.nc);
499 522b0689 2003-09-30 devnull 	bufread(&flist->b, (Posn)0, genbuf, flist->b.nc);
500 522b0689 2003-09-30 devnull 	memmove(genstr.s, genbuf, flist->b.nc*RUNESIZE);
501 522b0689 2003-09-30 devnull 	genstr.n = flist->b.nc;
502 76193d7c 2003-09-30 devnull 	Straddc(&genstr, '\0');
503 76193d7c 2003-09-30 devnull 	return retcode;
504 76193d7c 2003-09-30 devnull }
505 76193d7c 2003-09-30 devnull 
506 76193d7c 2003-09-30 devnull void
507 76193d7c 2003-09-30 devnull getcurwd(void)
508 76193d7c 2003-09-30 devnull {
509 76193d7c 2003-09-30 devnull 	String *t;
510 76193d7c 2003-09-30 devnull 	char buf[256];
511 76193d7c 2003-09-30 devnull 
512 76193d7c 2003-09-30 devnull 	buf[0] = 0;
513 76193d7c 2003-09-30 devnull 	getwd(buf, sizeof(buf));
514 76193d7c 2003-09-30 devnull 	t = tmpcstr(buf);
515 76193d7c 2003-09-30 devnull 	Strduplstr(&curwd, t);
516 76193d7c 2003-09-30 devnull 	freetmpstr(t);
517 76193d7c 2003-09-30 devnull 	if(curwd.n == 0)
518 76193d7c 2003-09-30 devnull 		warn(Wpwd);
519 76193d7c 2003-09-30 devnull 	else if(curwd.s[curwd.n-1] != '/')
520 76193d7c 2003-09-30 devnull 		Straddc(&curwd, '/');
521 76193d7c 2003-09-30 devnull }
522 76193d7c 2003-09-30 devnull 
523 76193d7c 2003-09-30 devnull void
524 76193d7c 2003-09-30 devnull cd(String *str)
525 76193d7c 2003-09-30 devnull {
526 76193d7c 2003-09-30 devnull 	int i, fd;
527 76193d7c 2003-09-30 devnull 	char *s;
528 76193d7c 2003-09-30 devnull 	File *f;
529 76193d7c 2003-09-30 devnull 	String owd;
530 76193d7c 2003-09-30 devnull 
531 76193d7c 2003-09-30 devnull 	getcurwd();
532 76193d7c 2003-09-30 devnull 	if(getname((File *)0, str, FALSE))
533 76193d7c 2003-09-30 devnull 		s = genc;
534 76193d7c 2003-09-30 devnull 	else
535 76193d7c 2003-09-30 devnull 		s = home;
536 76193d7c 2003-09-30 devnull 	if(chdir(s))
537 76193d7c 2003-09-30 devnull 		syserror("chdir");
538 76193d7c 2003-09-30 devnull 	fd = open("/dev/wdir", OWRITE);
539 76193d7c 2003-09-30 devnull 	if(fd > 0)
540 76193d7c 2003-09-30 devnull 		write(fd, s, strlen(s));
541 76193d7c 2003-09-30 devnull 	dprint("!\n");
542 76193d7c 2003-09-30 devnull 	Strinit(&owd);
543 76193d7c 2003-09-30 devnull 	Strduplstr(&owd, &curwd);
544 76193d7c 2003-09-30 devnull 	getcurwd();
545 76193d7c 2003-09-30 devnull 	settempfile();
546 76193d7c 2003-09-30 devnull 	for(i=0; i<tempfile.nused; i++){
547 76193d7c 2003-09-30 devnull 		f = tempfile.filepptr[i];
548 76193d7c 2003-09-30 devnull 		if(f!=cmd && f->name.s[0]!='/' && f->name.s[0]!=0){
549 76193d7c 2003-09-30 devnull 			Strinsert(&f->name, &owd, (Posn)0);
550 76193d7c 2003-09-30 devnull 			fixname(&f->name);
551 76193d7c 2003-09-30 devnull 			sortname(f);
552 76193d7c 2003-09-30 devnull 		}else if(f != cmd && Strispre(&curwd, &f->name)){
553 76193d7c 2003-09-30 devnull 			fixname(&f->name);
554 76193d7c 2003-09-30 devnull 			sortname(f);
555 76193d7c 2003-09-30 devnull 		}
556 76193d7c 2003-09-30 devnull 	}
557 76193d7c 2003-09-30 devnull 	Strclose(&owd);
558 76193d7c 2003-09-30 devnull }
559 76193d7c 2003-09-30 devnull 
560 76193d7c 2003-09-30 devnull int
561 76193d7c 2003-09-30 devnull loadflist(String *s)
562 76193d7c 2003-09-30 devnull {
563 76193d7c 2003-09-30 devnull 	int c, i;
564 76193d7c 2003-09-30 devnull 
565 76193d7c 2003-09-30 devnull 	c = s->s[0];
566 76193d7c 2003-09-30 devnull 	for(i = 0; s->s[i]==' ' || s->s[i]=='\t'; i++)
567 76193d7c 2003-09-30 devnull 		;
568 76193d7c 2003-09-30 devnull 	if((c==' ' || c=='\t') && s->s[i]!='\n'){
569 76193d7c 2003-09-30 devnull 		if(s->s[i]=='<'){
570 76193d7c 2003-09-30 devnull 			Strdelete(s, 0L, (long)i+1);
571 76193d7c 2003-09-30 devnull 			readcmd(s);
572 76193d7c 2003-09-30 devnull 		}else{
573 76193d7c 2003-09-30 devnull 			Strzero(&genstr);
574 76193d7c 2003-09-30 devnull 			while((c = s->s[i++]) && c!='\n')
575 76193d7c 2003-09-30 devnull 				Straddc(&genstr, c);
576 76193d7c 2003-09-30 devnull 			Straddc(&genstr, '\0');
577 76193d7c 2003-09-30 devnull 		}
578 76193d7c 2003-09-30 devnull 	}else{
579 76193d7c 2003-09-30 devnull 		if(c != '\n')
580 76193d7c 2003-09-30 devnull 			error(Eblank);
581 76193d7c 2003-09-30 devnull 		Strdupl(&genstr, empty);
582 76193d7c 2003-09-30 devnull 	}
583 76193d7c 2003-09-30 devnull 	if(genc)
584 76193d7c 2003-09-30 devnull 		free(genc);
585 76193d7c 2003-09-30 devnull 	genc = Strtoc(&genstr);
586 76193d7c 2003-09-30 devnull 	return genstr.s[0];
587 76193d7c 2003-09-30 devnull }
588 76193d7c 2003-09-30 devnull 
589 76193d7c 2003-09-30 devnull File *
590 76193d7c 2003-09-30 devnull readflist(int readall, int delete)
591 76193d7c 2003-09-30 devnull {
592 76193d7c 2003-09-30 devnull 	Posn i;
593 76193d7c 2003-09-30 devnull 	int c;
594 76193d7c 2003-09-30 devnull 	File *f;
595 76193d7c 2003-09-30 devnull 	String t;
596 76193d7c 2003-09-30 devnull 
597 76193d7c 2003-09-30 devnull 	Strinit(&t);
598 76193d7c 2003-09-30 devnull 	for(i=0,f=0; f==0 || readall || delete; i++){	/* ++ skips blank */
599 76193d7c 2003-09-30 devnull 		Strdelete(&genstr, (Posn)0, i);
600 76193d7c 2003-09-30 devnull 		for(i=0; (c = genstr.s[i])==' ' || c=='\t' || c=='\n'; i++)
601 76193d7c 2003-09-30 devnull 			;
602 76193d7c 2003-09-30 devnull 		if(i >= genstr.n)
603 76193d7c 2003-09-30 devnull 			break;
604 76193d7c 2003-09-30 devnull 		Strdelete(&genstr, (Posn)0, i);
605 76193d7c 2003-09-30 devnull 		for(i=0; (c=genstr.s[i]) && c!=' ' && c!='\t' && c!='\n'; i++)
606 76193d7c 2003-09-30 devnull 			;
607 76193d7c 2003-09-30 devnull 
608 76193d7c 2003-09-30 devnull 		if(i == 0)
609 76193d7c 2003-09-30 devnull 			break;
610 76193d7c 2003-09-30 devnull 		genstr.s[i] = 0;
611 76193d7c 2003-09-30 devnull 		Strduplstr(&t, tmprstr(genstr.s, i+1));
612 76193d7c 2003-09-30 devnull 		fixname(&t);
613 76193d7c 2003-09-30 devnull 		f = lookfile(&t);
614 76193d7c 2003-09-30 devnull 		if(delete){
615 76193d7c 2003-09-30 devnull 			if(f == 0)
616 76193d7c 2003-09-30 devnull 				warn_S(Wfile, &t);
617 76193d7c 2003-09-30 devnull 			else
618 76193d7c 2003-09-30 devnull 				trytoclose(f);
619 76193d7c 2003-09-30 devnull 		}else if(f==0 && readall)
620 76193d7c 2003-09-30 devnull 			logsetname(f = newfile(), &t);
621 76193d7c 2003-09-30 devnull 	}
622 76193d7c 2003-09-30 devnull 	Strclose(&t);
623 76193d7c 2003-09-30 devnull 	return f;
624 76193d7c 2003-09-30 devnull }
625 76193d7c 2003-09-30 devnull 
626 76193d7c 2003-09-30 devnull File *
627 76193d7c 2003-09-30 devnull tofile(String *s)
628 76193d7c 2003-09-30 devnull {
629 76193d7c 2003-09-30 devnull 	File *f;
630 76193d7c 2003-09-30 devnull 
631 76193d7c 2003-09-30 devnull 	if(s->s[0] != ' ')
632 76193d7c 2003-09-30 devnull 		error(Eblank);
633 76193d7c 2003-09-30 devnull 	if(loadflist(s) == 0){
634 76193d7c 2003-09-30 devnull 		f = lookfile(&genstr);	/* empty string ==> nameless file */
635 76193d7c 2003-09-30 devnull 		if(f == 0)
636 76193d7c 2003-09-30 devnull 			error_s(Emenu, genc);
637 76193d7c 2003-09-30 devnull 	}else if((f=readflist(FALSE, FALSE)) == 0)
638 76193d7c 2003-09-30 devnull 		error_s(Emenu, genc);
639 76193d7c 2003-09-30 devnull 	return current(f);
640 76193d7c 2003-09-30 devnull }
641 76193d7c 2003-09-30 devnull 
642 76193d7c 2003-09-30 devnull File *
643 76193d7c 2003-09-30 devnull getfile(String *s)
644 76193d7c 2003-09-30 devnull {
645 76193d7c 2003-09-30 devnull 	File *f;
646 76193d7c 2003-09-30 devnull 
647 76193d7c 2003-09-30 devnull 	if(loadflist(s) == 0)
648 76193d7c 2003-09-30 devnull 		logsetname(f = newfile(), &genstr);
649 76193d7c 2003-09-30 devnull 	else if((f=readflist(TRUE, FALSE)) == 0)
650 76193d7c 2003-09-30 devnull 		error(Eblank);
651 76193d7c 2003-09-30 devnull 	return current(f);
652 76193d7c 2003-09-30 devnull }
653 76193d7c 2003-09-30 devnull 
654 76193d7c 2003-09-30 devnull void
655 76193d7c 2003-09-30 devnull closefiles(File *f, String *s)
656 76193d7c 2003-09-30 devnull {
657 76193d7c 2003-09-30 devnull 	if(s->s[0] == 0){
658 76193d7c 2003-09-30 devnull 		if(f == 0)
659 76193d7c 2003-09-30 devnull 			error(Enofile);
660 76193d7c 2003-09-30 devnull 		trytoclose(f);
661 76193d7c 2003-09-30 devnull 		return;
662 76193d7c 2003-09-30 devnull 	}
663 76193d7c 2003-09-30 devnull 	if(s->s[0] != ' ')
664 76193d7c 2003-09-30 devnull 		error(Eblank);
665 76193d7c 2003-09-30 devnull 	if(loadflist(s) == 0)
666 76193d7c 2003-09-30 devnull 		error(Enewline);
667 76193d7c 2003-09-30 devnull 	readflist(FALSE, TRUE);
668 76193d7c 2003-09-30 devnull }
669 76193d7c 2003-09-30 devnull 
670 76193d7c 2003-09-30 devnull void
671 76193d7c 2003-09-30 devnull copy(File *f, Address addr2)
672 76193d7c 2003-09-30 devnull {
673 76193d7c 2003-09-30 devnull 	Posn p;
674 76193d7c 2003-09-30 devnull 	int ni;
675 76193d7c 2003-09-30 devnull 	for(p=addr.r.p1; p<addr.r.p2; p+=ni){
676 76193d7c 2003-09-30 devnull 		ni = addr.r.p2-p;
677 76193d7c 2003-09-30 devnull 		if(ni > BLOCKSIZE)
678 76193d7c 2003-09-30 devnull 			ni = BLOCKSIZE;
679 522b0689 2003-09-30 devnull 		bufread(&f->b, p, genbuf, ni);
680 76193d7c 2003-09-30 devnull 		loginsert(addr2.f, addr2.r.p2, tmprstr(genbuf, ni)->s, ni);
681 76193d7c 2003-09-30 devnull 	}
682 76193d7c 2003-09-30 devnull 	addr2.f->ndot.r.p2 = addr2.r.p2+(f->dot.r.p2-f->dot.r.p1);
683 76193d7c 2003-09-30 devnull 	addr2.f->ndot.r.p1 = addr2.r.p2;
684 76193d7c 2003-09-30 devnull }
685 76193d7c 2003-09-30 devnull 
686 76193d7c 2003-09-30 devnull void
687 76193d7c 2003-09-30 devnull move(File *f, Address addr2)
688 76193d7c 2003-09-30 devnull {
689 76193d7c 2003-09-30 devnull 	if(addr.r.p2 <= addr2.r.p2){
690 76193d7c 2003-09-30 devnull 		logdelete(f, addr.r.p1, addr.r.p2);
691 76193d7c 2003-09-30 devnull 		copy(f, addr2);
692 76193d7c 2003-09-30 devnull 	}else if(addr.r.p1 >= addr2.r.p2){
693 76193d7c 2003-09-30 devnull 		copy(f, addr2);
694 76193d7c 2003-09-30 devnull 		logdelete(f, addr.r.p1, addr.r.p2);
695 76193d7c 2003-09-30 devnull 	}else
696 76193d7c 2003-09-30 devnull 		error(Eoverlap);
697 76193d7c 2003-09-30 devnull }
698 76193d7c 2003-09-30 devnull 
699 76193d7c 2003-09-30 devnull Posn
700 76193d7c 2003-09-30 devnull nlcount(File *f, Posn p0, Posn p1)
701 76193d7c 2003-09-30 devnull {
702 76193d7c 2003-09-30 devnull 	Posn nl = 0;
703 76193d7c 2003-09-30 devnull 
704 76193d7c 2003-09-30 devnull 	while(p0 < p1)
705 76193d7c 2003-09-30 devnull 		if(filereadc(f, p0++)=='\n')
706 76193d7c 2003-09-30 devnull 			nl++;
707 76193d7c 2003-09-30 devnull 	return nl;
708 76193d7c 2003-09-30 devnull }
709 76193d7c 2003-09-30 devnull 
710 76193d7c 2003-09-30 devnull void
711 76193d7c 2003-09-30 devnull printposn(File *f, int charsonly)
712 76193d7c 2003-09-30 devnull {
713 76193d7c 2003-09-30 devnull 	Posn l1, l2;
714 76193d7c 2003-09-30 devnull 
715 76193d7c 2003-09-30 devnull 	if(!charsonly){
716 76193d7c 2003-09-30 devnull 		l1 = 1+nlcount(f, (Posn)0, addr.r.p1);
717 76193d7c 2003-09-30 devnull 		l2 = l1+nlcount(f, addr.r.p1, addr.r.p2);
718 76193d7c 2003-09-30 devnull 		/* check if addr ends with '\n' */
719 76193d7c 2003-09-30 devnull 		if(addr.r.p2>0 && addr.r.p2>addr.r.p1 && filereadc(f, addr.r.p2-1)=='\n')
720 76193d7c 2003-09-30 devnull 			--l2;
721 76193d7c 2003-09-30 devnull 		dprint("%lud", l1);
722 76193d7c 2003-09-30 devnull 		if(l2 != l1)
723 76193d7c 2003-09-30 devnull 			dprint(",%lud", l2);
724 76193d7c 2003-09-30 devnull 		dprint("; ");
725 76193d7c 2003-09-30 devnull 	}
726 76193d7c 2003-09-30 devnull 	dprint("#%lud", addr.r.p1);
727 76193d7c 2003-09-30 devnull 	if(addr.r.p2 != addr.r.p1)
728 76193d7c 2003-09-30 devnull 		dprint(",#%lud", addr.r.p2);
729 76193d7c 2003-09-30 devnull 	dprint("\n");
730 76193d7c 2003-09-30 devnull }
731 76193d7c 2003-09-30 devnull 
732 76193d7c 2003-09-30 devnull void
733 76193d7c 2003-09-30 devnull settempfile(void)
734 76193d7c 2003-09-30 devnull {
735 76193d7c 2003-09-30 devnull 	if(tempfile.nalloc < file.nused){
736 76193d7c 2003-09-30 devnull 		free(tempfile.listptr);
737 76193d7c 2003-09-30 devnull 		tempfile.listptr = emalloc(sizeof(*tempfile.filepptr)*file.nused);
738 76193d7c 2003-09-30 devnull 		tempfile.nalloc = file.nused;
739 76193d7c 2003-09-30 devnull 	}
740 76193d7c 2003-09-30 devnull 	tempfile.nused = file.nused;
741 76193d7c 2003-09-30 devnull 	memmove(&tempfile.filepptr[0], &file.filepptr[0], file.nused*sizeof(File*));
742 76193d7c 2003-09-30 devnull }