297 lines
7.8 KiB
Java
297 lines
7.8 KiB
Java
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package net.sourceforge.filebot.similarity;
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import static java.util.Arrays.*;
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import static java.util.Collections.*;
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import static java.util.regex.Pattern.*;
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import java.io.File;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collection;
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import java.util.List;
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import java.util.Scanner;
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import java.util.regex.MatchResult;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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public class SeasonEpisodeMatcher {
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public static final SeasonEpisodeFilter DEFAULT_SANITY = new SeasonEpisodeFilter(50, 50, 1000);
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private SeasonEpisodePattern[] patterns;
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private Pattern seasonPattern;
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public SeasonEpisodeMatcher(SeasonEpisodeFilter sanity, boolean strict) {
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patterns = new SeasonEpisodePattern[5];
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// match patterns like Season 01 Episode 02, ...
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patterns[0] = new SeasonEpisodePattern(null, "(?<!\\p{Alnum})(?i:season|series)[^\\p{Alnum}]{0,3}(\\d{1,4})[^\\p{Alnum}]{0,3}(?i:episode)[^\\p{Alnum}]{0,3}(\\d{1,4})[^\\p{Alnum}]{0,3}(?!\\p{Digit})");
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// match patterns like S01E01, s01e02, ... [s01]_[e02], s01.e02, s01e02a, s2010e01 ... s01e01-02-03-04, [s01]_[e01-02-03-04] ...
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patterns[1] = new SeasonEpisodePattern(null, "(?<!\\p{Digit})[Ss](\\d{1,2}|\\d{4})[^\\p{Alnum}]{0,3}[Ee][Pp]?(((?<=[^._ ])[Ee]?[Pp]?\\d{1,3}(\\D|$))+)") {
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@Override
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protected Collection<SxE> process(MatchResult match) {
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List<SxE> matches = new ArrayList<SxE>(2);
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Scanner epno = new Scanner(match.group(2)).useDelimiter("\\D+");
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while (epno.hasNext()) {
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matches.add(new SxE(match.group(1), epno.next()));
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}
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return matches;
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}
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};
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// match patterns like 1x01, 1.02, ..., 1x01a, 10x01, 10.02, ... 1x01-02-03-04, 1x01x02x03x04 ...
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patterns[2] = new SeasonEpisodePattern(sanity, "(?<!\\p{Alnum}|\\d{4}[.])(\\d{1,2})[xe.](((?<=[^._ ])\\d{2,3}(\\D|$))+)") {
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@Override
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protected Collection<SxE> process(MatchResult match) {
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List<SxE> matches = new ArrayList<SxE>(2);
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Scanner epno = new Scanner(match.group(2)).useDelimiter("\\D+");
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while (epno.hasNext()) {
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matches.add(new SxE(match.group(1), epno.next()));
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}
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return matches;
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}
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};
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// match patterns like ep1, ep.1, ...
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patterns[3] = new SeasonEpisodePattern(sanity, "(?<!\\p{Alnum})(?i:e|ep|episode)[^\\p{Alnum}]{0,3}(\\d{1,3})(?!\\p{Digit})") {
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@Override
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protected Collection<SxE> process(MatchResult match) {
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// regex doesn't match season
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return singleton(new SxE(null, match.group(1)));
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}
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};
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// match patterns like 01, 102, 1003 (enclosed in separators)
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patterns[4] = new SeasonEpisodePattern(sanity, "(?<!\\p{Alnum})([0-2]?\\d?)(\\d{2})(?!\\p{Alnum})") {
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@Override
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protected Collection<SxE> process(MatchResult match) {
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// interpret match as season and episode
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SxE seasonEpisode = new SxE(match.group(1), match.group(2));
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// interpret match as episode number only
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SxE absoluteEpisode = new SxE(null, match.group(1) + match.group(2));
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// return both matches, unless they are one and the same
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return seasonEpisode.equals(absoluteEpisode) ? singleton(seasonEpisode) : asList(seasonEpisode, absoluteEpisode);
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}
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};
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// only use S00E00 and SxE pattern in strict mode
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if (strict) {
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patterns = new SeasonEpisodePattern[] { patterns[0], patterns[1], patterns[2] };
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}
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// season folder pattern for complementing partial sxe info from filename
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seasonPattern = compile("Season[-._ ]?(\\d{1,2})", CASE_INSENSITIVE | UNICODE_CASE);
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}
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/**
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* Try to get season and episode numbers for the given string.
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*
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* @param name match this string against the a set of know patterns
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* @return the matches returned by the first pattern that returns any matches for this
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* string, or null if no pattern returned any matches
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*/
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public List<SxE> match(CharSequence name) {
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for (SeasonEpisodePattern pattern : patterns) {
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List<SxE> match = pattern.match(name);
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if (!match.isEmpty()) {
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// current pattern did match
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return match;
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}
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}
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return null;
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}
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public List<SxE> match(File file) {
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for (SeasonEpisodePattern pattern : patterns) {
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List<SxE> match = pattern.match(file.getName());
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if (!match.isEmpty()) {
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// current pattern did match
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for (int i = 0; i < match.size(); i++) {
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if (match.get(i).season < 0) {
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Matcher sm = seasonPattern.matcher(file.getPath());
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if (sm.find()) {
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match.set(i, new SxE(Integer.parseInt(sm.group(1)), match.get(i).episode));
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}
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}
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}
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return match;
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}
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}
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return null;
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}
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public int find(CharSequence name, int fromIndex) {
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for (SeasonEpisodePattern pattern : patterns) {
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int index = pattern.find(name, fromIndex);
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if (index >= 0) {
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// current pattern did match
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return index;
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}
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}
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return -1;
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}
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public Matcher matcher(CharSequence name) {
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for (SeasonEpisodePattern pattern : patterns) {
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Matcher matcher = pattern.matcher(name);
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// check if current pattern matches
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if (matcher.find()) {
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// reset matcher state
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return matcher.reset();
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}
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}
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return null;
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}
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public static class SxE {
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public static final int UNDEFINED = -1;
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public final int season;
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public final int episode;
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public SxE(Integer season, Integer episode) {
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this.season = season != null ? season : UNDEFINED;
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this.episode = episode != null ? episode : UNDEFINED;
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}
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public SxE(String season, String episode) {
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this.season = parse(season);
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this.episode = parse(episode);
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}
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protected int parse(String number) {
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try {
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return Integer.parseInt(number);
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} catch (Exception e) {
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return UNDEFINED;
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}
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}
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@Override
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public boolean equals(Object object) {
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if (object instanceof SxE) {
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SxE other = (SxE) object;
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return this.season == other.season && this.episode == other.episode;
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}
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return false;
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}
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@Override
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public int hashCode() {
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return Arrays.hashCode(new Object[] { season, episode });
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}
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@Override
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public String toString() {
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return season >= 0 ? String.format("%dx%02d", season, episode) : String.format("%02d", episode);
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}
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}
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public static class SeasonEpisodeFilter {
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public final int seasonLimit;
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public final int seasonEpisodeLimit;
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public final int absoluteEpisodeLimit;
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public SeasonEpisodeFilter(int seasonLimit, int seasonEpisodeLimit, int absoluteEpisodeLimit) {
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this.seasonLimit = seasonLimit;
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this.seasonEpisodeLimit = seasonEpisodeLimit;
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this.absoluteEpisodeLimit = absoluteEpisodeLimit;
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}
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boolean filter(SxE sxe) {
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return (sxe.season >= 0 && sxe.season < seasonLimit && sxe.episode < seasonEpisodeLimit) || (sxe.season < 0 && sxe.episode < absoluteEpisodeLimit);
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}
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}
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public static class SeasonEpisodePattern {
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protected final Pattern pattern;
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protected final SeasonEpisodeFilter sanity;
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public SeasonEpisodePattern(SeasonEpisodeFilter sanity, String pattern) {
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this.pattern = Pattern.compile(pattern);
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this.sanity = sanity;
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}
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public Matcher matcher(CharSequence name) {
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return pattern.matcher(name);
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}
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protected Collection<SxE> process(MatchResult match) {
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return singleton(new SxE(match.group(1), match.group(2)));
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}
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public List<SxE> match(CharSequence name) {
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// name will probably contain no more than two matches
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List<SxE> matches = new ArrayList<SxE>(2);
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Matcher matcher = matcher(name);
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while (matcher.find()) {
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for (SxE value : process(matcher)) {
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if (sanity == null || sanity.filter(value)) {
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matches.add(value);
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}
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}
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}
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return matches;
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}
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public int find(CharSequence name, int fromIndex) {
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Matcher matcher = matcher(name).region(fromIndex, name.length());
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while (matcher.find()) {
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for (SxE value : process(matcher)) {
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if (sanity == null || sanity.filter(value)) {
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return matcher.start();
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}
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}
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}
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return -1;
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}
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}
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}
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