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parser.go
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/
parser.go
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package tnp
import (
"regexp"
"slices"
"sort"
"strconv"
"strings"
"github.com/samber/lo"
)
type MediaType string
const (
TypeTVSeries = MediaType("tv_series")
TypeTVSeason = MediaType("tv_season")
TypeMovie = MediaType("movie")
)
type Match struct {
Type string
Start int
End int
Content string
}
type Parsed struct {
Name string
Year string
Producer string
Codec string
BitDepth string
Audio string
Resoluton string
Quality string
Season []int
Episode []int
Network string
Excess []string
MediaType MediaType
AudioTrack string
}
func Parse(title string, standard bool) *Parsed {
var unmatch []string
matches := make(map[string]Match)
for t, ps := range Patterns {
for _, p := range ps {
r := regexp.MustCompile("(?i)" + p.Regex)
ms := r.FindAllStringSubmatchIndex(title, -1)
if ms == nil {
continue
}
m := ms[0]
if t == "year" {
m = ms[len(ms)-1]
}
start, end := m[0], m[1]
if len(m) > 2 && m[2] != -1 {
start, end = m[2], m[3]
}
if _, has := matches[t]; !has {
matches[t] = Match{
t,
m[0],
m[1],
lo.If(standard && p.Replace != "", p.Replace).Else(title[start:end]),
}
}
}
}
mts := lo.Values(matches)
sort.Slice(mts, func(i, j int) bool {
return mts[i].Start < mts[j].Start
})
i, mIdx := 0, 0
for i < len(title) {
var unmatched string
if mIdx < len(matches) {
m := mts[mIdx]
if m.Start > i {
unmatched = title[i:m.Start]
}
if i < m.End {
i = m.End
}
mIdx++
} else {
unmatched = title[i:]
i = len(title)
}
if len(unmatched) > 0 {
unmatch = append(unmatch, unmatched)
}
}
var (
name string
producer string
excess []string
)
if len(unmatch) > 0 {
name = strings.TrimSpace(unmatch[0])
unmatch = slices.Delete(unmatch, 0, 1)
trimRe := regexp.MustCompile(`(^[-_.\s(),]+)|([-.\\s,]+$)`)
splitRe := regexp.MustCompile(`\.\.+|\s+`)
for _, u := range unmatch {
trimed := trimRe.ReplaceAllString(u, "")
for _, e := range splitRe.Split(trimed, -1) {
if len(e) > 0 {
excess = append(excess, e)
}
}
}
}
if len(excess) > 0 {
producer = excess[len(excess)-1]
excess = slices.Delete(excess, len(excess)-1, len(excess))
}
parsed := new(Parsed)
for _, m := range matches {
if m.Content != "" {
switch m.Type {
case "year":
parsed.Year = m.Content
case "codec":
parsed.Codec = m.Content
case "audio":
parsed.Audio = m.Content
case "resolution":
parsed.Resoluton = m.Content
case "quality":
parsed.Quality = m.Content
case "season":
parsed.Season = getSeasonEpisode(m.Content)
case "episode":
parsed.Episode = getSeasonEpisode(m.Content)
case "network":
parsed.Network = m.Content
case "bit_depth":
parsed.BitDepth = m.Content
case "audio_track":
parsed.AudioTrack = m.Content
}
}
}
parsed.Name = name
parsed.Producer = producer
parsed.Excess = excess
if len(parsed.Season) > 1 {
parsed.MediaType = TypeTVSeries
} else if len(parsed.Season) > 0 {
parsed.MediaType = TypeTVSeason
} else {
parsed.MediaType = TypeMovie
}
return parsed
}
func getSeasonEpisode(match string) []int {
re := regexp.MustCompile(`[0-9]+`)
matches := re.FindAllString(match, -1)
var res []int
if len(matches) == 2 {
left, _ := strconv.Atoi(matches[0])
right, _ := strconv.Atoi(matches[1])
for i := left; i <= right; i++ {
res = append(res, i)
}
} else if len(matches) > 0 {
n, _ := strconv.Atoi(matches[0])
res = append(res, n)
}
return res
}