598 lines
11 KiB
C
598 lines
11 KiB
C
#include <u.h>
|
|
#include <libc.h>
|
|
#include <draw.h>
|
|
#include <plumb.h>
|
|
#include <regexp.h>
|
|
#include <bio.h>
|
|
#include <9pclient.h>
|
|
#include "faces.h"
|
|
|
|
enum /* number of deleted faces to cache */
|
|
{
|
|
Nsave = 20,
|
|
};
|
|
|
|
static Facefile *facefiles;
|
|
static int nsaved;
|
|
static char *facedom;
|
|
static char *libface;
|
|
static char *homeface;
|
|
static char *machinelist;
|
|
|
|
/*
|
|
* Loading the files is slow enough on a dial-up line to be worth this trouble
|
|
*/
|
|
typedef struct Readcache Readcache;
|
|
struct Readcache {
|
|
char *file;
|
|
char *data;
|
|
long mtime;
|
|
long rdtime;
|
|
Readcache *next;
|
|
};
|
|
|
|
static Readcache *rcache;
|
|
|
|
ulong
|
|
dirlen(char *s)
|
|
{
|
|
Dir *d;
|
|
ulong len;
|
|
|
|
d = dirstat(s);
|
|
if(d == nil)
|
|
return 0;
|
|
len = d->length;
|
|
free(d);
|
|
return len;
|
|
}
|
|
|
|
ulong
|
|
fsdirlen(CFsys *fs,char *s)
|
|
{
|
|
Dir *d;
|
|
ulong len;
|
|
|
|
d = fsdirstat(fs,s);
|
|
if(d == nil)
|
|
return 0;
|
|
len = d->length;
|
|
free(d);
|
|
return len;
|
|
}
|
|
|
|
ulong
|
|
dirmtime(char *s)
|
|
{
|
|
Dir *d;
|
|
ulong t;
|
|
|
|
d = dirstat(s);
|
|
if(d == nil)
|
|
return 0;
|
|
t = d->mtime;
|
|
free(d);
|
|
return t;
|
|
}
|
|
|
|
static char*
|
|
doreadfile(char *s)
|
|
{
|
|
char *p;
|
|
int fd, n;
|
|
ulong len;
|
|
|
|
len = dirlen(s);
|
|
if(len == 0)
|
|
return nil;
|
|
|
|
p = malloc(len+1);
|
|
if(p == nil)
|
|
return nil;
|
|
|
|
if((fd = open(s, OREAD)) < 0
|
|
|| (n = readn(fd, p, len)) < 0) {
|
|
close(fd);
|
|
free(p);
|
|
return nil;
|
|
}
|
|
|
|
p[n] = '\0';
|
|
return p;
|
|
}
|
|
|
|
static char*
|
|
readfile(char *s)
|
|
{
|
|
Readcache *r, **l;
|
|
char *p;
|
|
ulong mtime;
|
|
|
|
for(l=&rcache, r=*l; r; l=&r->next, r=*l) {
|
|
if(strcmp(r->file, s) != 0)
|
|
continue;
|
|
|
|
/*
|
|
* if it's less than 30 seconds since we read it, or it
|
|
* hasn't changed, send back our copy
|
|
*/
|
|
if(time(0) - r->rdtime < 30)
|
|
return strdup(r->data);
|
|
if(dirmtime(s) == r->mtime) {
|
|
r->rdtime = time(0);
|
|
return strdup(r->data);
|
|
}
|
|
|
|
/* out of date, remove this and fall out of loop */
|
|
*l = r->next;
|
|
free(r->file);
|
|
free(r->data);
|
|
free(r);
|
|
break;
|
|
}
|
|
|
|
/* add to cache */
|
|
mtime = dirmtime(s);
|
|
if(mtime == 0)
|
|
return nil;
|
|
|
|
if((p = doreadfile(s)) == nil)
|
|
return nil;
|
|
|
|
r = malloc(sizeof(*r));
|
|
if(r == nil)
|
|
return nil;
|
|
r->mtime = mtime;
|
|
r->file = estrdup(s);
|
|
r->data = p;
|
|
r->rdtime = time(0);
|
|
r->next = rcache;
|
|
rcache = r;
|
|
return strdup(r->data);
|
|
}
|
|
|
|
static char*
|
|
translatedomain(char *dom, char *list)
|
|
{
|
|
static char buf[200];
|
|
char *p, *ep, *q, *nextp, *file;
|
|
char *bbuf, *ebuf;
|
|
Reprog *exp;
|
|
|
|
if(dom == nil || *dom == 0)
|
|
return nil;
|
|
|
|
if(list == nil || (file = readfile(list)) == nil)
|
|
return dom;
|
|
|
|
for(p=file; p; p=nextp) {
|
|
if(nextp = strchr(p, '\n'))
|
|
*nextp++ = '\0';
|
|
|
|
if(*p == '#' || (q = strpbrk(p, " \t")) == nil || q-p > sizeof(buf)-2)
|
|
continue;
|
|
|
|
bbuf = buf+1;
|
|
ebuf = buf+(1+(q-p));
|
|
strncpy(bbuf, p, ebuf-bbuf);
|
|
*ebuf = 0;
|
|
if(*bbuf != '^')
|
|
*--bbuf = '^';
|
|
if(ebuf[-1] != '$') {
|
|
*ebuf++ = '$';
|
|
*ebuf = 0;
|
|
}
|
|
|
|
if((exp = regcomp(bbuf)) == nil){
|
|
fprint(2, "bad regexp in machinelist: %s\n", bbuf);
|
|
killall("regexp");
|
|
}
|
|
|
|
if(regexec(exp, dom, 0, 0)){
|
|
free(exp);
|
|
ep = p+strlen(p);
|
|
q += strspn(q, " \t");
|
|
if(ep-q+2 > sizeof buf) {
|
|
fprint(2, "huge replacement in machinelist: %.*s\n", utfnlen(q, ep-q), q);
|
|
exits("bad big replacement");
|
|
}
|
|
strncpy(buf, q, ep-q);
|
|
ebuf = buf+(ep-q);
|
|
*ebuf = 0;
|
|
while(ebuf > buf && (ebuf[-1] == ' ' || ebuf[-1] == '\t'))
|
|
*--ebuf = 0;
|
|
free(file);
|
|
return buf;
|
|
}
|
|
free(exp);
|
|
}
|
|
free(file);
|
|
|
|
return dom;
|
|
}
|
|
|
|
static char*
|
|
tryfindpicture(char *dom, char *user, char *dir, char *dict)
|
|
{
|
|
static char buf[1024];
|
|
char *file, *p, *nextp, *q;
|
|
|
|
if((file = readfile(dict)) == nil)
|
|
return nil;
|
|
|
|
snprint(buf, sizeof buf, "%s/%s", dom, user);
|
|
|
|
for(p=file; p; p=nextp){
|
|
if(nextp = strchr(p, '\n'))
|
|
*nextp++ = '\0';
|
|
|
|
if(*p == '#' || (q = strpbrk(p, " \t")) == nil)
|
|
continue;
|
|
*q++ = 0;
|
|
|
|
if(strcmp(buf, p) == 0){
|
|
q += strspn(q, " \t");
|
|
snprint(buf, sizeof buf, "%s/%s", dir, q);
|
|
q = buf+strlen(buf);
|
|
while(q > buf && (q[-1] == ' ' || q[-1] == '\t'))
|
|
*--q = 0;
|
|
free(file);
|
|
return estrdup(buf);
|
|
}
|
|
}
|
|
free(file);
|
|
return nil;
|
|
}
|
|
|
|
static char*
|
|
estrstrdup(char *a, char *b)
|
|
{
|
|
char *t;
|
|
|
|
t = emalloc(strlen(a)+strlen(b)+1);
|
|
strcpy(t, a);
|
|
strcat(t, b);
|
|
return t;
|
|
}
|
|
|
|
static char*
|
|
tryfindfiledir(char *dom, char *user, char *dir)
|
|
{
|
|
char *dict, *ndir, *x;
|
|
int fd;
|
|
int i, n;
|
|
Dir *d;
|
|
|
|
/*
|
|
* If this directory has a .machinelist, use it.
|
|
*/
|
|
x = estrstrdup(dir, "/.machinelist");
|
|
dom = estrdup(translatedomain(dom, x));
|
|
free(x);
|
|
|
|
/*
|
|
* If this directory has a .dict, use it.
|
|
*/
|
|
dict = estrstrdup(dir, "/.dict");
|
|
if(access(dict, AEXIST) >= 0){
|
|
x = tryfindpicture(dom, user, dir, dict);
|
|
free(dict);
|
|
free(dom);
|
|
return x;
|
|
}
|
|
free(dict);
|
|
|
|
/*
|
|
* If not, recurse into subdirectories.
|
|
* Ignore 48x48xN directories for now.
|
|
*/
|
|
if((fd = open(dir, OREAD)) < 0)
|
|
return nil;
|
|
while((n = dirread(fd, &d)) > 0){
|
|
for(i=0; i<n; i++){
|
|
if((d[i].mode&DMDIR)&& strncmp(d[i].name, "48x48x", 6) != 0){
|
|
ndir = emalloc(strlen(dir)+1+strlen(d[i].name)+1);
|
|
strcpy(ndir, dir);
|
|
strcat(ndir, "/");
|
|
strcat(ndir, d[i].name);
|
|
if((x = tryfindfiledir(dom, user, ndir)) != nil){
|
|
free(ndir);
|
|
free(d);
|
|
close(fd);
|
|
free(dom);
|
|
return x;
|
|
}
|
|
}
|
|
}
|
|
free(d);
|
|
}
|
|
close(fd);
|
|
|
|
/*
|
|
* Handle 48x48xN directories in the right order.
|
|
*/
|
|
ndir = estrstrdup(dir, "/48x48x8");
|
|
for(i=8; i>0; i>>=1){
|
|
ndir[strlen(ndir)-1] = i+'0';
|
|
if(access(ndir, AEXIST) >= 0 && (x = tryfindfiledir(dom, user, ndir)) != nil){
|
|
free(ndir);
|
|
free(dom);
|
|
return x;
|
|
}
|
|
}
|
|
free(ndir);
|
|
free(dom);
|
|
return nil;
|
|
}
|
|
|
|
static char*
|
|
tryfindfile(char *dom, char *user)
|
|
{
|
|
char *p;
|
|
|
|
while(dom && *dom){
|
|
if(homeface && (p = tryfindfiledir(dom, user, homeface)) != nil)
|
|
return p;
|
|
if((p = tryfindfiledir(dom, user, libface)) != nil)
|
|
return p;
|
|
if((dom = strchr(dom, '.')) == nil)
|
|
break;
|
|
dom++;
|
|
}
|
|
return nil;
|
|
}
|
|
|
|
char*
|
|
findfile(Face *f, char *dom, char *user)
|
|
{
|
|
char *p;
|
|
|
|
if(facedom == nil){
|
|
facedom = getenv("facedom");
|
|
if(facedom == nil)
|
|
facedom = DEFAULT;
|
|
}
|
|
if(libface == nil)
|
|
libface = unsharp("#9/face");
|
|
if(machinelist == nil)
|
|
machinelist = estrstrdup(libface, "/.machinelist");
|
|
if(homeface == nil)
|
|
homeface = smprint("%s/lib/face", getenv("HOME"));
|
|
|
|
dom = translatedomain(dom, machinelist);
|
|
if(dom == nil)
|
|
dom = facedom;
|
|
|
|
f->unknown = 0;
|
|
if((p = tryfindfile(dom, user)) != nil)
|
|
return p;
|
|
f->unknown = 1;
|
|
p = tryfindfile(dom, "unknown");
|
|
if(p != nil || strcmp(dom, facedom) == 0)
|
|
return p;
|
|
return tryfindfile("unknown", "unknown");
|
|
}
|
|
|
|
static
|
|
void
|
|
clearsaved(void)
|
|
{
|
|
Facefile *f, *next, **lf;
|
|
|
|
lf = &facefiles;
|
|
for(f=facefiles; f!=nil; f=next){
|
|
next = f->next;
|
|
if(f->ref > 0){
|
|
*lf = f;
|
|
lf = &(f->next);
|
|
continue;
|
|
}
|
|
if(f->image != display->black && f->image != display->white)
|
|
freeimage(f->image);
|
|
free(f->file);
|
|
free(f);
|
|
}
|
|
*lf = nil;
|
|
nsaved = 0;
|
|
}
|
|
|
|
void
|
|
freefacefile(Facefile *f)
|
|
{
|
|
if(f==nil || f->ref-->1)
|
|
return;
|
|
if(++nsaved > Nsave)
|
|
clearsaved();
|
|
}
|
|
|
|
static Image*
|
|
myallocimage(ulong chan)
|
|
{
|
|
Image *img;
|
|
img = allocimage(display, Rect(0,0,Facesize,Facesize), chan, 0, DNofill);
|
|
if(img == nil){
|
|
clearsaved();
|
|
img = allocimage(display, Rect(0,0,Facesize,Facesize), chan, 0, DNofill);
|
|
if(img == nil)
|
|
return nil;
|
|
}
|
|
return img;
|
|
}
|
|
|
|
|
|
static Image*
|
|
readbit(int fd, ulong chan)
|
|
{
|
|
char buf[4096], hx[4], *p;
|
|
uchar data[Facesize*Facesize]; /* more than enough */
|
|
int nhx, i, n, ndata, nbit;
|
|
Image *img;
|
|
|
|
n = readn(fd, buf, sizeof buf);
|
|
if(n <= 0)
|
|
return nil;
|
|
if(n >= sizeof buf)
|
|
n = sizeof(buf)-1;
|
|
buf[n] = '\0';
|
|
|
|
n = 0;
|
|
nhx = 0;
|
|
nbit = chantodepth(chan);
|
|
ndata = (Facesize*Facesize*nbit)/8;
|
|
p = buf;
|
|
while(n < ndata) {
|
|
p = strpbrk(p+1, "0123456789abcdefABCDEF");
|
|
if(p == nil)
|
|
break;
|
|
if(p[0] == '0' && p[1] == 'x')
|
|
continue;
|
|
|
|
hx[nhx] = *p;
|
|
if(++nhx == 2) {
|
|
hx[nhx] = 0;
|
|
i = strtoul(hx, 0, 16);
|
|
data[n++] = i;
|
|
nhx = 0;
|
|
}
|
|
}
|
|
if(n < ndata)
|
|
return allocimage(display, Rect(0,0,Facesize,Facesize), CMAP8, 0, 0x88888888);
|
|
|
|
img = myallocimage(chan);
|
|
if(img == nil)
|
|
return nil;
|
|
loadimage(img, img->r, data, ndata);
|
|
return img;
|
|
}
|
|
|
|
static Facefile*
|
|
readface(char *fn)
|
|
{
|
|
int x, y, fd;
|
|
uchar bits;
|
|
uchar *p;
|
|
Image *mask;
|
|
Image *face;
|
|
char buf[16];
|
|
uchar data[Facesize*Facesize];
|
|
uchar mdata[(Facesize*Facesize)/8];
|
|
Facefile *f;
|
|
Dir *d;
|
|
|
|
for(f=facefiles; f!=nil; f=f->next){
|
|
if(strcmp(fn, f->file) == 0){
|
|
if(f->image == nil)
|
|
break;
|
|
if(time(0) - f->rdtime >= 30) {
|
|
if(dirmtime(fn) != f->mtime){
|
|
f = nil;
|
|
break;
|
|
}
|
|
f->rdtime = time(0);
|
|
}
|
|
f->ref++;
|
|
return f;
|
|
}
|
|
}
|
|
|
|
if((fd = open(fn, OREAD)) < 0)
|
|
return nil;
|
|
|
|
if(readn(fd, buf, sizeof buf) != sizeof buf){
|
|
close(fd);
|
|
return nil;
|
|
}
|
|
|
|
seek(fd, 0, 0);
|
|
|
|
mask = nil;
|
|
if(buf[0] == '0' && buf[1] == 'x'){
|
|
/* greyscale faces are just masks that we draw black through! */
|
|
if(buf[2+8] == ',') /* ldepth 1 */
|
|
mask = readbit(fd, GREY2);
|
|
else
|
|
mask = readbit(fd, GREY1);
|
|
face = display->black;
|
|
}else{
|
|
face = readimage(display, fd, 0);
|
|
if(face == nil)
|
|
goto Done;
|
|
else if(face->chan == GREY4 || face->chan == GREY8){ /* greyscale: use inversion as mask */
|
|
mask = myallocimage(face->chan);
|
|
/* okay if mask is nil: that will copy the image white background and all */
|
|
if(mask == nil)
|
|
goto Done;
|
|
|
|
/* invert greyscale image */
|
|
draw(mask, mask->r, display->white, nil, ZP);
|
|
gendraw(mask, mask->r, display->black, ZP, face, face->r.min);
|
|
freeimage(face);
|
|
face = display->black;
|
|
}else if(face->depth == 8){ /* snarf the bytes back and do a fill. */
|
|
mask = myallocimage(GREY1);
|
|
if(mask == nil)
|
|
goto Done;
|
|
if(unloadimage(face, face->r, data, Facesize*Facesize) != Facesize*Facesize){
|
|
freeimage(mask);
|
|
goto Done;
|
|
}
|
|
bits = 0;
|
|
p = mdata;
|
|
for(y=0; y<Facesize; y++){
|
|
for(x=0; x<Facesize; x++){
|
|
bits <<= 1;
|
|
if(data[Facesize*y+x] != 0xFF)
|
|
bits |= 1;
|
|
if((x&7) == 7)
|
|
*p++ = bits&0xFF;
|
|
}
|
|
}
|
|
if(loadimage(mask, mask->r, mdata, sizeof mdata) != sizeof mdata){
|
|
freeimage(mask);
|
|
goto Done;
|
|
}
|
|
}
|
|
}
|
|
|
|
Done:
|
|
/* always add at beginning of list, so updated files don't collide in cache */
|
|
if(f == nil){
|
|
f = emalloc(sizeof(Facefile));
|
|
f->file = estrdup(fn);
|
|
d = dirfstat(fd);
|
|
if(d != nil){
|
|
f->mtime = d->mtime;
|
|
free(d);
|
|
}
|
|
f->next = facefiles;
|
|
facefiles = f;
|
|
}
|
|
f->ref++;
|
|
f->image = face;
|
|
f->mask = mask;
|
|
f->rdtime = time(0);
|
|
close(fd);
|
|
return f;
|
|
}
|
|
|
|
void
|
|
findbit(Face *f)
|
|
{
|
|
char *fn;
|
|
|
|
fn = findfile(f, f->str[Sdomain], f->str[Suser]);
|
|
if(fn) {
|
|
if(strstr(fn, "unknown"))
|
|
f->unknown = 1;
|
|
f->file = readface(fn);
|
|
}
|
|
if(f->file){
|
|
f->bit = f->file->image;
|
|
f->mask = f->file->mask;
|
|
}else{
|
|
/* if returns nil, this is still ok: draw(nil) works */
|
|
f->bit = allocimage(display, Rect(0,0,1,1), CMAP8, 1, DYellow);
|
|
replclipr(f->bit, 1, Rect(0, 0, Facesize, Facesize));
|
|
f->mask = nil;
|
|
}
|
|
}
|