func replre(s string, re *sre.ReProg, to string, glob bool) string {
rfrom := []rune(s)
rto := []rune(to)
nrefs := 0
for i := 0; i < len(rto)-1; i++ {
if nb := rto[i+1]; rto[i] == '\\' {
if nb >= '0' && nb <= '9' {
nb -= '0'
rto[i] = nb
nrefs++
n := copy(rto[i+1:], rto[i+2:])
rto = rto[:i+1+n]
} else if nb == '\\' {
n := copy(rto[i+1:], rto[i+2:])
rto = rto[:i+1+n]
}
}
}
st := 0
for {
cmd.Dprintf("re match [%d:%d]\n", st, len(rfrom))
rg := re.ExecRunes(rfrom, st, len(rfrom))
if len(rg) == 0 {
break
}
r0 := rg[0]
var ns []rune
ns = append(ns, rfrom[:r0.P0]...)
if nrefs == 0 {
ns = append(ns, rto...)
} else {
for _, r := range rto {
if r > 10 {
ns = append(ns, r)
continue
}
if r < rune(len(rg)) {
t := rfrom[rg[r].P0:rg[r].P1]
ns = append(ns, t...)
}
}
}
st = len(ns)
ns = append(ns, rfrom[r0.P1:]...)
rfrom = ns
if !glob {
break
}
}
return string(rfrom)
}
func cmdXY(s *Sam, c *Cmd) {
if s.inXY {
panic("can't next X or Y commands")
}
s.inXY = true
defer func() { s.inXY = false }()
var re *sre.ReProg
var err error
if c.Rexp != nil {
if re, err = sre.Compile(c.Rexp, sre.Fwd); err != nil {
panic(fmt.Sprintf("%c: regexp: %s", c.Ch, err))
}
} else if c.Ch == 'Y' {
panic("Y: no regexp given")
}
nf := make([]*file, len(s.f))
copy(nf, s.f)
for _, f := range nf {
matches := true
if re != nil {
nm := f.MenuLine() + "\n"
rg := re.ExecStr(nm, 0, len(nm))
matches = len(rg) > 0
}
if (c.Ch == 'X' && !matches) || (c.Ch == 'Y' && matches) {
continue
}
c.dot = f.Sel()
for _, child := range c.Child {
child.dot = c.dot
if err := s.runCmd(child); err != nil {
s.Out <- fmt.Sprintf("%s\n", err)
}
}
}
}