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package escape
func IsImageOrLink(chars []byte, index int) int {
if chars[index] == '!' {
return isImageOrLinkStartExclamation(chars, index)
}
if chars[index] == '[' {
return isImageOrLinkStartBracket(chars, index)
}
return -1
}
func isImageOrLinkStartExclamation(chars []byte, index int) int {
nextIndex := index + 1
if nextIndex < len(chars) && chars[nextIndex] == '[' {
// It could be the start of an image
return 1
}
return -1
}
func isImageOrLinkStartBracket(chars []byte, index int) int {
for i := index + 1; i < len(chars); i++ {
if chars[i] == '\n' {
return -1
}
if chars[i] == ']' {
return 1
}
}
return -1
}
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