int
expandfile(Text *t, uint q0, uint q1, Expand *e)
{
int i, n, nname, colon, eval;
uint amin, amax;
Rune *r, c;
Window *w;
Runestr rs;
amax = q1;
if(q1 == q0){
colon = -1;
while(q1<t->file->b.nc && isfilec(c=textreadc(t, q1))){
if(c == ':'){
colon = q1;
break;
}
q1++;
}
while(q0>0 && (isfilec(c=textreadc(t, q0-1)) || isaddrc(c) || isregexc(c))){
q0--;
if(colon<0 && c==':')
colon = q0;
}
/*
* if it looks like it might begin file: , consume address chars after :
* otherwise terminate expansion at :
*/
if(colon >= 0){
q1 = colon;
if(colon<t->file->b.nc-1 && isaddrc(textreadc(t, colon+1))){
q1 = colon+1;
while(q1<t->file->b.nc && isaddrc(textreadc(t, q1)))
q1++;
}
}
if(q1 > q0)
if(colon >= 0){ /* stop at white space */
for(amax=colon+1; amax<t->file->b.nc; amax++)
if((c=textreadc(t, amax))==' ' || c=='\t' || c=='\n')
break;
}else
amax = t->file->b.nc;
}
amin = amax;
e->q0 = q0;
e->q1 = q1;
n = q1-q0;
if(n == 0)
return FALSE;
/* see if it's a file name */
r = runemalloc(n);
bufread(&t->file->b, q0, r, n);
/* first, does it have bad chars? */
nname = -1;
for(i=0; i<n; i++){
c = r[i];
if(c==':' && nname<0){
if(q0+i+1<t->file->b.nc && (i==n-1 || isaddrc(textreadc(t, q0+i+1))))
amin = q0+i;
else
goto Isntfile;
nname = i;
}
}
if(nname == -1)
nname = n;
for(i=0; i<nname; i++)
if(!isfilec(r[i]))
goto Isntfile;
/*
* See if it's a file name in <>, and turn that into an include
* file name if so. Should probably do it for "" too, but that's not
* restrictive enough syntax and checking for a #include earlier on the
* line would be silly.
*/
if(q0>0 && textreadc(t, q0-1)=='<' && q1<t->file->b.nc && textreadc(t, q1)=='>'){
rs = includename(t, r, nname);
r = rs.r;
nname = rs.nr;
}
else if(amin == q0)
goto Isfile;
else{
rs = dirname(t, r, nname);
r = rs.r;
nname = rs.nr;
}
e->bname = runetobyte(r, nname);
/* if it's already a window name, it's a file */
w = lookfile(r, nname);
if(w != nil)
goto Isfile;
/* if it's the name of a file, it's a file */
if(ismtpt(e->bname) || access(e->bname, 0) < 0){
free(e->bname);
e->bname = nil;
goto Isntfile;
}
Isfile:
e->name = r;
e->nname = nname;
e->u.at = t;
e->a0 = amin+1;
eval = FALSE;
address(TRUE, nil, range(-1,-1), range(0,0), t, e->a0, amax, tgetc, &eval, (uint*)&e->a1);
return TRUE;
Isntfile:
free(r);
return FALSE;
}
int
textload(Text *t, uint q0, char *file, int setqid)
{
Rune *rp;
Dirlist *dl, **dlp;
int fd, i, j, n, ndl, nulls;
uint q, q1;
Dir *d, *dbuf;
char *tmp;
Text *u;
if(t->ncache!=0 || t->file->b.nc || t->w==nil || t!=&t->w->body)
error("text.load");
if(t->w->isdir && t->file->nname==0){
warning(nil, "empty directory name");
return -1;
}
if(ismtpt(file)){
warning(nil, "will not open self mount point %s\n", file);
return -1;
}
fd = open(file, OREAD);
if(fd < 0){
warning(nil, "can't open %s: %r\n", file);
return -1;
}
d = dirfstat(fd);
if(d == nil){
warning(nil, "can't fstat %s: %r\n", file);
goto Rescue;
}
nulls = FALSE;
if(d->qid.type & QTDIR){
/* this is checked in get() but it's possible the file changed underfoot */
if(t->file->ntext > 1){
warning(nil, "%s is a directory; can't read with multiple windows on it\n", file);
goto Rescue;
}
t->w->isdir = TRUE;
t->w->filemenu = FALSE;
if(t->file->nname > 0 && t->file->name[t->file->nname-1] != '/'){
rp = runemalloc(t->file->nname+1);
runemove(rp, t->file->name, t->file->nname);
rp[t->file->nname] = '/';
winsetname(t->w, rp, t->file->nname+1);
free(rp);
}
dlp = nil;
ndl = 0;
dbuf = nil;
while((n=dirread(fd, &dbuf)) > 0){
for(i=0; i<n; i++){
dl = emalloc(sizeof(Dirlist));
j = strlen(dbuf[i].name);
tmp = emalloc(j+1+1);
memmove(tmp, dbuf[i].name, j);
if(dbuf[i].qid.type & QTDIR)
tmp[j++] = '/';
tmp[j] = '\0';
dl->r = bytetorune(tmp, &dl->nr);
dl->wid = stringwidth(t->fr.font, tmp);
free(tmp);
ndl++;
dlp = realloc(dlp, ndl*sizeof(Dirlist*));
dlp[ndl-1] = dl;
}
free(dbuf);
}
qsort(dlp, ndl, sizeof(Dirlist*), dircmp);
t->w->dlp = dlp;
t->w->ndl = ndl;
textcolumnate(t, dlp, ndl);
q1 = t->file->b.nc;
}else{
t->w->isdir = FALSE;
t->w->filemenu = TRUE;
q1 = q0 + fileload(t->file, q0, fd, &nulls);
}
if(setqid){
t->file->dev = d->dev;
t->file->mtime = d->mtime;
t->file->qidpath = d->qid.path;
}
close(fd);
rp = fbufalloc();
for(q=q0; q<q1; q+=n){
n = q1-q;
if(n > RBUFSIZE)
n = RBUFSIZE;
bufread(&t->file->b, q, rp, n);
if(q < t->org)
t->org += n;
else if(q <= t->org+t->fr.nchars)
frinsert(&t->fr, rp, rp+n, q-t->org);
if(t->fr.lastlinefull)
break;
}
fbuffree(rp);
for(i=0; i<t->file->ntext; i++){
u = t->file->text[i];
if(u != t){
if(u->org > u->file->b.nc) /* will be 0 because of reset(), but safety first */
u->org = 0;
textresize(u, u->all, TRUE);
textbacknl(u, u->org, 0); /* go to beginning of line */
}
textsetselect(u, q0, q0);
}
if(nulls)
warning(nil, "%s: NUL bytes elided\n", file);
free(d);
return q1-q0;
Rescue:
close(fd);
return -1;
}
