func (r *Regexp) findSubmatchIndex(rs []rune, ls []int) []int {
rptr, err := r.validRegexpPtr()
if err != nil {
return nil
}
matchData := C.pcre2_match_data_create_from_pattern(rptr, nil)
defer C.pcre2_match_data_free(matchData)
out := []int(nil)
options := 0
count := r.matchRuneArray(rs, 0, options, matchData)
if count <= 0 {
return nil
}
ovector := pcre2GetOvectorPointer(matchData, count)
for i := 0; i < count; i++ {
ovec0 := int(ovector[2*i])
b1 := 0
for x := 0; x < ovec0; x++ {
b1 += ls[x]
}
ovec1 := int(ovector[2*i+1])
b2 := b1
for x := ovec0; x < ovec1; x++ {
b2 += ls[x]
}
out = append(out, []int{b1, b2}...)
}
return out
}
func (r *Regexp) findAllSubmatchIndex(rs []rune, ls []int, n int) [][]int {
if n == 0 {
return nil
}
rptr, err := r.validRegexpPtr()
if err != nil {
return nil
}
matchData := C.pcre2_match_data_create_from_pattern(rptr, nil)
defer C.pcre2_match_data_free(matchData)
out := [][]int(nil)
offset := 0
options := 0
for len(rs) > 0 {
count := r.matchRuneArray(rs, 0, options, matchData)
if count <= 0 {
break
}
ovector := pcre2GetOvectorPointer(matchData, count)
curmatch := make([]int, 0, count)
for i := 0; i < count; i++ {
ovec2i := int(ovector[2*i])
b1 := 0
for x := 0; x < ovec2i; x++ {
b1 += ls[x]
}
b2 := b1
for x := ovec2i; x < int(ovector[2*i+1]); x++ {
b2 += ls[x]
}
curmatch = append(curmatch, offset+b1, offset+b2)
}
out = append(out, curmatch)
units := int(ovector[1])
for x := 0; x < units; x++ {
offset += ls[x]
}
rs = rs[units:]
ls = ls[units:]
if n > 0 && len(out) >= n {
break
}
}
return out
}
func (r *Regexp) matchRuneArray(rs []rune, offset int, options int, matchData *C.pcre2_match_data) int {
rptr, err := r.validRegexpPtr()
if err != nil {
return -1
}
if matchData == nil {
matchData = C.pcre2_match_data_create_from_pattern(rptr, nil)
defer C.pcre2_match_data_free(matchData)
}
rc := C.pcre2_match(
rptr,
(C.PCRE2_SPTR)(unsafe.Pointer(&rs[0])),
C.size_t(len(rs)),
(C.PCRE2_SIZE)(offset),
(C.uint32_t)(options),
matchData,
nil,
)
return int(rc)
}