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package reply
import (
re2 "github.com/dlclark/regexp2"
)
const (
delimiter = "d"
embedded = "b"
empty = "e"
header = "h"
quote = "q"
signature = "s"
text = "t"
)
func classifyLine(line string) string {
if isEmptyLine(line) {
return empty
}
if isDelimiter(line) {
return delimiter
}
if isSignature(line) {
return signature
}
if isEmbeddedEmail(line) {
return embedded
}
if isHeader(line) {
return header
}
if isQuote(line) {
return quote
}
return text
}
func isEmptyLine(line string) bool {
ok, _ := re2.MustCompile(`^[[:blank:]]*$`, re2.RE2).MatchString(line)
return ok
}
func isQuote(line string) bool {
ok, _ := re2.MustCompile(`^[[:blank:]]*>`, re2.RE2).MatchString(line)
return ok
}
func isDelimiter(line string) bool {
ok, _ := re2.MustCompile(`^[[:blank:]]*([_,=+~#*ᐧ—]+|[\-]{4,}|[\-]+[[:blank:]])[[:blank:]]*$`, re2.RE2).MatchString(line)
return ok
}
func isSignature(line string) bool {
// remove any markdown links
stripped, _ := re2.MustCompile(`\[([^\]]+)\]\([^\)]+\)`, re2.RE2).Replace(line, "$1", 0, -1)
for _, r := range patterns["SIGNATURE_REGEXES"] {
ok, _ := r.MatchString(stripped)
if ok {
return true
}
}
return false
}
func isHeader(line string) bool {
for _, r := range patterns["EMAIL_HEADER_REGEXES"] {
ok, _ := r.MatchString(line)
if ok {
return true
}
}
return false
}
func isEmbeddedEmail(line string) bool {
for _, r := range patterns["EMBEDDED_REGEXES"] {
ok, _ := r.MatchString(line)
if ok {
return true
}
}
return false
}
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