func collect_words(bufferp unsafe.Pointer, isEditMode bool, rep unsafe.Pointer) {
var start_iter, end_iter C.GtkTextIter
buf := (*C.GtkTextBuffer)(bufferp)
C.gtk_text_buffer_get_start_iter(buf, &start_iter)
C.gtk_text_buffer_get_end_iter(buf, &end_iter)
text := []byte(C.GoString((*C.char)(C.gtk_text_buffer_get_text(buf, &start_iter, &end_iter, C.gtk_false()))))
C.gtk_text_buffer_get_iter_at_mark(buf, &start_iter, C.gtk_text_buffer_get_insert(buf))
cursor_char_offset := int(C.gtk_text_iter_get_offset(&start_iter))
go func() {
byte_offset := 0
char_offset := 0
re := (*regexp.Regexp)(rep)
decode_byte_offset := 0
var word_start_char_offset, word_end_char_offset int
var size int
for {
// find next word
loc := re.FindIndex(text[byte_offset:])
if loc == nil {
return
}
// convert byte offset to char offset
byte_offset += loc[0]
for decode_byte_offset < byte_offset {
_, size = utf8.DecodeRune(text[decode_byte_offset:])
decode_byte_offset += size
char_offset += 1
}
word_start_char_offset = char_offset
byte_offset += loc[1] - loc[0]
for decode_byte_offset < byte_offset {
_, size = utf8.DecodeRune(text[decode_byte_offset:])
decode_byte_offset += size
char_offset += 1
}
word_end_char_offset = char_offset
// skip current word in edit mode
if isEditMode {
if cursor_char_offset >= word_start_char_offset && cursor_char_offset <= word_end_char_offset {
continue
}
}
// add to global vocabulary
GlobalVocabulary.Add(string(text[byte_offset-(loc[1]-loc[0]) : byte_offset]))
}
}()
}
// GetOffset is a wrapper around gtk_text_iter_get_offset().
func (v *TextIter) GetOffset() int {
return int(C.gtk_text_iter_get_offset(v.native()))
}