int
_fmtcpy(Fmt *f, void *vm, int n, int sz)
{
Rune *rt, *rs, r;
char *t, *s, *m, *me;
ulong fl;
int nc, w;
m = vm;
me = m + sz;
w = f->width;
fl = f->flags;
if((fl & FmtPrec) && n > f->prec)
n = f->prec;
if(f->runes){
if(!(fl & FmtLeft) && _rfmtpad(f, w - n) < 0)
return -1;
rt = f->to;
rs = f->stop;
for(nc = n; nc > 0; nc--){
r = *(uchar*)m;
if(r < Runeself)
m++;
else if((me - m) >= UTFmax || fullrune(m, me-m))
m += chartorune(&r, m);
else
break;
FMTRCHAR(f, rt, rs, r);
}
f->nfmt += rt - (Rune *)f->to;
f->to = rt;
if(m < me)
return -1;
if(fl & FmtLeft && _rfmtpad(f, w - n) < 0)
return -1;
}else{
if(!(fl & FmtLeft) && _fmtpad(f, w - n) < 0)
return -1;
t = f->to;
s = f->stop;
for(nc = n; nc > 0; nc--){
r = *(uchar*)m;
if(r < Runeself)
m++;
else if((me - m) >= UTFmax || fullrune(m, me-m))
m += chartorune(&r, m);
else
break;
FMTRUNE(f, t, s, r);
}
f->nfmt += t - (char *)f->to;
f->to = t;
if(fl & FmtLeft && _fmtpad(f, w - n) < 0)
return -1;
}
return 0;
}
int
__fmtrcpy(Fmt *f, const void *vm, int n)
{
Rune r, *m, *me, *rt, *rs;
char *t, *s;
ulong fl;
int w;
m = (Rune*)vm;
fl = f->flags;
w = 0;
if(fl & FmtWidth)
w = f->width;
if((fl & FmtPrec) && n > f->prec)
n = f->prec;
if(f->runes){
if(!(fl & FmtLeft) && __rfmtpad(f, w - n) < 0)
return -1;
rt = (Rune*)f->to;
rs = (Rune*)f->stop;
for(me = m + n; m < me; m++)
FMTRCHAR(f, rt, rs, *m);
f->nfmt += rt - (Rune *)f->to;
f->to = rt;
if(fl & FmtLeft && __rfmtpad(f, w - n) < 0)
return -1;
}else{
if(!(fl & FmtLeft) && __fmtpad(f, w - n) < 0)
return -1;
t = (char*)f->to;
s = (char*)f->stop;
for(me = m + n; m < me; m++){
r = *m;
FMTRUNE(f, t, s, r);
}
f->nfmt += t - (char *)f->to;
f->to = t;
if(fl & FmtLeft && __fmtpad(f, w - n) < 0)
return -1;
}
return 0;
}
int
fmtrune(Fmt *f, int r)
{
Rune *rt;
char *t;
int n;
if(f->runes){
rt = f->to;
FMTRCHAR(f, rt, f->stop, r);
f->to = rt;
n = 1;
}else{
t = f->to;
FMTRUNE(f, t, f->stop, r);
n = t - (char*)f->to;
f->to = t;
}
f->nfmt += n;
return 0;
}
int
dorfmt(Fmt *f, const Rune *fmt)
{
Rune *rt, *rs;
int r;
char *t, *s;
int nfmt;
nfmt = f->nfmt;
for(;;) {
if(f->runes) {
rt = f->to;
rs = f->stop;
while((r = *fmt++) && r != '%') {
FMTRCHAR(f, rt, rs, r);
}
f->nfmt += rt - (Rune *)f->to;
f->to = rt;
if(!r)
return f->nfmt - nfmt;
f->stop = rs;
} else {
t = f->to;
s = f->stop;
while((r = *fmt++) && r != '%') {
FMTRUNE(f, t, f->stop, r);
}
f->nfmt += t - (char *)f->to;
f->to = t;
if(!r)
return f->nfmt - nfmt;
f->stop = s;
}
fmt = __fmtdispatch(f, (Rune*)fmt, 1);
if(fmt == nil)
return -1;
}
return 0; /* not reached */
}
static int
qstrfmt(char *sin, Rune *rin, Quoteinfo *q, Fmt *f)
{
Rune r, *rm, *rme;
char *t, *s, *m, *me;
Rune *rt, *rs;
ulong fl;
int nc, w;
m = sin;
me = m + q->nbytesin;
rm = rin;
rme = rm + q->nrunesin;
fl = f->flags;
w = 0;
if(fl & FmtWidth)
w = f->width;
if(f->runes){
if(!(fl & FmtLeft) && __rfmtpad(f, w - q->nrunesout) < 0)
return -1;
}else{
if(!(fl & FmtLeft) && __fmtpad(f, w - q->nbytesout) < 0)
return -1;
}
t = (char*)f->to;
s = (char*)f->stop;
rt = (Rune*)f->to;
rs = (Rune*)f->stop;
if(f->runes)
FMTRCHAR(f, rt, rs, '\'');
else
FMTRUNE(f, t, s, '\'');
for(nc = q->nrunesin; nc > 0; nc--){
if(sin){
r = *(uchar*)m;
if(r < Runeself)
m++;
else if((me - m) >= UTFmax || fullrune(m, (int)(me-m)))
m += chartorune(&r, m);
else
break;
}else{
if(rm >= rme)
break;
r = *(uchar*)rm++;
}
if(f->runes){
FMTRCHAR(f, rt, rs, r);
if(r == '\'')
FMTRCHAR(f, rt, rs, r);
}else{
FMTRUNE(f, t, s, r);
if(r == '\'')
FMTRUNE(f, t, s, r);
}
}
if(f->runes){
FMTRCHAR(f, rt, rs, '\'');
USED(rs);
f->nfmt += (int)(rt - (Rune *)f->to);
f->to = rt;
if(fl & FmtLeft && __rfmtpad(f, w - q->nrunesout) < 0)
return -1;
}else{
FMTRUNE(f, t, s, '\'');
USED(s);
f->nfmt += (int)(t - (char *)f->to);
f->to = t;
if(fl & FmtLeft && __fmtpad(f, w - q->nbytesout) < 0)
return -1;
}
return 0;
}
