mihon/app/src/main/java/eu/kanade/tachiyomi/source/LocalSource.kt
2020-04-25 14:24:45 -04:00

268 lines
11 KiB
Kotlin

package eu.kanade.tachiyomi.source
import android.content.Context
import com.google.gson.Gson
import com.google.gson.JsonObject
import eu.kanade.tachiyomi.R
import eu.kanade.tachiyomi.source.model.Filter
import eu.kanade.tachiyomi.source.model.FilterList
import eu.kanade.tachiyomi.source.model.MangasPage
import eu.kanade.tachiyomi.source.model.Page
import eu.kanade.tachiyomi.source.model.SChapter
import eu.kanade.tachiyomi.source.model.SManga
import eu.kanade.tachiyomi.util.chapter.ChapterRecognition
import eu.kanade.tachiyomi.util.lang.compareToCaseInsensitiveNaturalOrder
import eu.kanade.tachiyomi.util.storage.DiskUtil
import eu.kanade.tachiyomi.util.storage.EpubFile
import eu.kanade.tachiyomi.util.system.ImageUtil
import java.io.File
import java.io.FileInputStream
import java.io.InputStream
import java.util.Locale
import java.util.Scanner
import java.util.concurrent.TimeUnit
import java.util.zip.ZipEntry
import java.util.zip.ZipFile
import junrar.Archive
import junrar.rarfile.FileHeader
import rx.Observable
import timber.log.Timber
class LocalSource(private val context: Context) : CatalogueSource {
companion object {
const val HELP_URL = "https://tachiyomi.org/help/guides/reading-local-manga/"
private const val COVER_NAME = "cover.jpg"
private val POPULAR_FILTERS = FilterList(OrderBy())
private val LATEST_FILTERS = FilterList(OrderBy().apply { state = Filter.Sort.Selection(1, false) })
private val LATEST_THRESHOLD = TimeUnit.MILLISECONDS.convert(7, TimeUnit.DAYS)
const val ID = 0L
fun updateCover(context: Context, manga: SManga, input: InputStream): File? {
val dir = getBaseDirectories(context).firstOrNull()
if (dir == null) {
input.close()
return null
}
val cover = File("${dir.absolutePath}/${manga.url}", COVER_NAME)
// It might not exist if using the external SD card
cover.parentFile.mkdirs()
input.use {
cover.outputStream().use {
input.copyTo(it)
}
}
return cover
}
private fun getBaseDirectories(context: Context): List<File> {
val c = context.getString(R.string.app_name) + File.separator + "local"
return DiskUtil.getExternalStorages(context).map { File(it.absolutePath, c) }
}
}
override val id = ID
override val name = context.getString(R.string.local_source)
override val lang = ""
override val supportsLatest = true
override fun toString() = context.getString(R.string.local_source)
override fun fetchPopularManga(page: Int) = fetchSearchManga(page, "", POPULAR_FILTERS)
override fun fetchSearchManga(page: Int, query: String, filters: FilterList): Observable<MangasPage> {
val baseDirs = getBaseDirectories(context)
val time = if (filters === LATEST_FILTERS) System.currentTimeMillis() - LATEST_THRESHOLD else 0L
var mangaDirs = baseDirs.mapNotNull { it.listFiles()?.toList() }
.flatten()
.filter { it.isDirectory && if (time == 0L) it.name.contains(query, ignoreCase = true) else it.lastModified() >= time }
.distinctBy { it.name }
val state = ((if (filters.isEmpty()) POPULAR_FILTERS else filters)[0] as OrderBy).state
when (state?.index) {
0 -> {
mangaDirs = if (state.ascending) {
mangaDirs.sortedBy { it.name.toLowerCase(Locale.ENGLISH) }
} else {
mangaDirs.sortedByDescending { it.name.toLowerCase(Locale.ENGLISH) }
}
}
1 -> {
mangaDirs = if (state.ascending) {
mangaDirs.sortedBy(File::lastModified)
} else {
mangaDirs.sortedByDescending(File::lastModified)
}
}
}
val mangas = mangaDirs.map { mangaDir ->
SManga.create().apply {
title = mangaDir.name
url = mangaDir.name
// Try to find the cover
for (dir in baseDirs) {
val cover = File("${dir.absolutePath}/$url", COVER_NAME)
if (cover.exists()) {
thumbnail_url = cover.absolutePath
break
}
}
// Copy the cover from the first chapter found.
if (thumbnail_url == null) {
val chapters = fetchChapterList(this).toBlocking().first()
if (chapters.isNotEmpty()) {
try {
val dest = updateCover(chapters.last(), this)
thumbnail_url = dest?.absolutePath
} catch (e: Exception) {
Timber.e(e)
}
}
}
}
}
return Observable.just(MangasPage(mangas, false))
}
override fun fetchLatestUpdates(page: Int) = fetchSearchManga(page, "", LATEST_FILTERS)
override fun fetchMangaDetails(manga: SManga): Observable<SManga> {
getBaseDirectories(context)
.mapNotNull { File(it, manga.url).listFiles()?.toList() }
.flatten()
.firstOrNull { it.extension == "json" }
?.apply {
val json = Gson().fromJson(Scanner(this).useDelimiter("\\Z").next(), JsonObject::class.java)
manga.title = json["title"]?.asString ?: manga.title
manga.author = json["author"]?.asString ?: manga.author
manga.artist = json["artist"]?.asString ?: manga.artist
manga.description = json["description"]?.asString ?: manga.description
manga.genre = json["genre"]?.asJsonArray?.joinToString(", ") { it.asString }
?: manga.genre
manga.status = json["status"]?.asInt ?: manga.status
}
return Observable.just(manga)
}
override fun fetchChapterList(manga: SManga): Observable<List<SChapter>> {
val chapters = getBaseDirectories(context)
.asSequence()
.mapNotNull { File(it, manga.url).listFiles()?.toList() }
.flatten()
.filter { it.isDirectory || isSupportedFile(it.extension) }
.map { chapterFile ->
SChapter.create().apply {
url = "${manga.url}/${chapterFile.name}"
val chapName = if (chapterFile.isDirectory) {
chapterFile.name
} else {
chapterFile.nameWithoutExtension
}
val chapNameCut = chapName.replace(manga.title, "", true).trim(' ', '-', '_')
name = if (chapNameCut.isEmpty()) chapName else chapNameCut
date_upload = chapterFile.lastModified()
ChapterRecognition.parseChapterNumber(this, manga)
}
}
.sortedWith(
Comparator { c1, c2 ->
val c = c2.chapter_number.compareTo(c1.chapter_number)
if (c == 0) c2.name.compareToCaseInsensitiveNaturalOrder(c1.name) else c
}
)
.toList()
return Observable.just(chapters)
}
override fun fetchPageList(chapter: SChapter): Observable<List<Page>> {
return Observable.error(Exception("Unused"))
}
private fun isSupportedFile(extension: String): Boolean {
return extension.toLowerCase() in setOf("zip", "rar", "cbr", "cbz", "epub")
}
fun getFormat(chapter: SChapter): Format {
val baseDirs = getBaseDirectories(context)
for (dir in baseDirs) {
val chapFile = File(dir, chapter.url)
if (!chapFile.exists()) continue
return getFormat(chapFile)
}
throw Exception("Chapter not found")
}
private fun getFormat(file: File): Format {
val extension = file.extension
return if (file.isDirectory) {
Format.Directory(file)
} else if (extension.equals("zip", true) || extension.equals("cbz", true)) {
Format.Zip(file)
} else if (extension.equals("rar", true) || extension.equals("cbr", true)) {
Format.Rar(file)
} else if (extension.equals("epub", true)) {
Format.Epub(file)
} else {
throw Exception("Invalid chapter format")
}
}
private fun updateCover(chapter: SChapter, manga: SManga): File? {
return when (val format = getFormat(chapter)) {
is Format.Directory -> {
val entry = format.file.listFiles()
.sortedWith(Comparator<File> { f1, f2 -> f1.name.compareToCaseInsensitiveNaturalOrder(f2.name) })
.find { !it.isDirectory && ImageUtil.isImage(it.name) { FileInputStream(it) } }
entry?.let { updateCover(context, manga, it.inputStream()) }
}
is Format.Zip -> {
ZipFile(format.file).use { zip ->
val entry = zip.entries().toList()
.sortedWith(Comparator<ZipEntry> { f1, f2 -> f1.name.compareToCaseInsensitiveNaturalOrder(f2.name) })
.find { !it.isDirectory && ImageUtil.isImage(it.name) { zip.getInputStream(it) } }
entry?.let { updateCover(context, manga, zip.getInputStream(it)) }
}
}
is Format.Rar -> {
Archive(format.file).use { archive ->
val entry = archive.fileHeaders
.sortedWith(Comparator<FileHeader> { f1, f2 -> f1.fileNameString.compareToCaseInsensitiveNaturalOrder(f2.fileNameString) })
.find { !it.isDirectory && ImageUtil.isImage(it.fileNameString) { archive.getInputStream(it) } }
entry?.let { updateCover(context, manga, archive.getInputStream(it)) }
}
}
is Format.Epub -> {
EpubFile(format.file).use { epub ->
val entry = epub.getImagesFromPages()
.firstOrNull()
?.let { epub.getEntry(it) }
entry?.let { updateCover(context, manga, epub.getInputStream(it)) }
}
}
}
}
private class OrderBy : Filter.Sort("Order by", arrayOf("Title", "Date"), Selection(0, true))
override fun getFilterList() = FilterList(OrderBy())
sealed class Format {
data class Directory(val file: File) : Format()
data class Zip(val file: File) : Format()
data class Rar(val file: File) : Format()
data class Epub(val file: File) : Format()
}
}