Improve utilities

src/main/kotlin/org/koitharu/kotatsu/parsers/exception/ContentUnavailableException.kt

@@ -1,3 +1,3 @@
 package org.koitharu.kotatsu.parsers.exception
 
-class ContentUnavailableException(message: String) : RuntimeException(message)
+public class ContentUnavailableException(message: String) : RuntimeException(message)

src/main/kotlin/org/koitharu/kotatsu/parsers/exception/GraphQLException.kt

@@ -2,11 +2,12 @@ package org.koitharu.kotatsu.parsers.exception
 
 import okio.IOException
 import org.json.JSONArray
+import org.koitharu.kotatsu.parsers.InternalParsersApi
 import org.koitharu.kotatsu.parsers.util.json.mapJSON
 
-class GraphQLException(private val errors: JSONArray) : IOException() {
+public class GraphQLException @InternalParsersApi constructor(private val errors: JSONArray) : IOException() {
 
-	val messages = errors.mapJSON {
+	public val messages = errors.mapJSON {
 		it.getString("message")
 	}
 

src/main/kotlin/org/koitharu/kotatsu/parsers/exception/NotFoundException.kt

@@ -3,7 +3,7 @@ package org.koitharu.kotatsu.parsers.exception
 import org.jsoup.HttpStatusException
 import java.net.HttpURLConnection
 
-class NotFoundException(
+public class NotFoundException(
 	message: String,
 	url: String,
 ) : HttpStatusException(message, HttpURLConnection.HTTP_NOT_FOUND, url)

src/main/kotlin/org/koitharu/kotatsu/parsers/exception/ParseException.kt

@@ -2,8 +2,8 @@ package org.koitharu.kotatsu.parsers.exception
 
 import org.koitharu.kotatsu.parsers.InternalParsersApi
 
-class ParseException @InternalParsersApi @JvmOverloads constructor(
+public class ParseException @InternalParsersApi @JvmOverloads constructor(
-	val shortMessage: String?,
+	public val shortMessage: String?,
-	val url: String,
+	public val url: String,
 	cause: Throwable? = null,
 ) : RuntimeException("$shortMessage at $url", cause)

src/main/kotlin/org/koitharu/kotatsu/parsers/exception/TooManyRequestExceptions.kt

@@ -4,18 +4,18 @@ import okio.IOException
 import java.time.Instant
 import java.time.temporal.ChronoUnit
 
-class TooManyRequestExceptions(
+public class TooManyRequestExceptions(
-	val url: String,
+	public val url: String,
 	retryAfter: Long,
 ) : IOException("Too man requests") {
 
-	val retryAt: Instant? = if (retryAfter > 0 && retryAfter < Long.MAX_VALUE) {
+	public val retryAt: Instant? = if (retryAfter > 0 && retryAfter < Long.MAX_VALUE) {
 		Instant.now().plusMillis(retryAfter)
 	} else {
 		null
 	}
 
-	fun getRetryDelay(): Long {
+	public fun getRetryDelay(): Long {
 		if (retryAt == null) {
 			return -1L
 		}

src/main/kotlin/org/koitharu/kotatsu/parsers/model/ContentRating.kt

@@ -1,6 +1,6 @@
 package org.koitharu.kotatsu.parsers.model
 
-enum class ContentRating {
+public enum class ContentRating {
 	SAFE,
 	SUGGESTIVE,
 	ADULT

src/main/kotlin/org/koitharu/kotatsu/parsers/model/ContentType.kt

@@ -1,6 +1,6 @@
 package org.koitharu.kotatsu.parsers.model
 
-enum class ContentType {
+public enum class ContentType {
 
 	/**
 	 * Standard manga, manhua, webtoons, etc

src/main/kotlin/org/koitharu/kotatsu/parsers/model/Demographic.kt

@@ -1,6 +1,6 @@
 package org.koitharu.kotatsu.parsers.model
 
-enum class Demographic {
+public enum class Demographic {
 	SHOUNEN,
 	SHOUJO,
 	SEINEN,

src/main/kotlin/org/koitharu/kotatsu/parsers/model/Favicon.kt

@@ -2,14 +2,14 @@ package org.koitharu.kotatsu.parsers.model
 
 import okhttp3.HttpUrl.Companion.toHttpUrl
 
-class Favicon internal constructor(
+public class Favicon(
-	@JvmField val url: String,
+	@JvmField public val url: String,
-	@JvmField val size: Int,
+	@JvmField public val size: Int,
 	@JvmField internal val rel: String?,
 ) : Comparable<Favicon> {
 
 	@JvmField
-	val type: String = url.toHttpUrl().pathSegments.last()
+	public val type: String = url.toHttpUrl().pathSegments.last()
 		.substringAfterLast('.', "").lowercase()
 
 	override fun compareTo(other: Favicon): Int {

src/main/kotlin/org/koitharu/kotatsu/parsers/model/Favicons.kt

@@ -1,8 +1,8 @@
 package org.koitharu.kotatsu.parsers.model
 
-class Favicons internal constructor(
+public class Favicons(
 	favicons: Collection<Favicon>,
-	@JvmField val referer: String?,
+	@JvmField public val referer: String?,
 ) : Collection<Favicon> {
 
 	private val icons = favicons.sortedDescending()
@@ -18,7 +18,7 @@ class Favicons internal constructor(
 
 	override fun iterator(): Iterator<Favicon> = icons.iterator()
 
-	operator fun minus(victim: Favicon): Favicons = Favicons(
+	public operator fun minus(victim: Favicon): Favicons = Favicons(
 		favicons = icons.filterNot { it == victim },
 		referer = referer,
 	)
@@ -30,7 +30,7 @@ class Favicons internal constructor(
 	 * @param types supported file types, e.g. png, svg, ico. May be null but not empty
 	 */
 	@JvmOverloads
-	fun find(size: Int, types: Set<String>? = null): Favicon? {
+	public fun find(size: Int, types: Set<String>? = null): Favicon? {
 		if (icons.isEmpty()) {
 			return null
 		}
@@ -48,11 +48,12 @@ class Favicons internal constructor(
 		return result
 	}
 
-	companion object {
+	public companion object {
 
 		@JvmStatic
-		fun empty() = Favicons(emptySet(), null)
+		public val EMPTY: Favicons = Favicons(emptySet(), null)
 
-		fun single(url: String) = Favicons(setOf(Favicon(url, 0, null)), null)
+		@JvmStatic
+		public fun single(url: String): Favicons = Favicons(setOf(Favicon(url, 0, null)), null)
 	}
 }

src/main/kotlin/org/koitharu/kotatsu/parsers/model/MangaListFilter.kt

@@ -17,19 +17,24 @@ public data class MangaListFilter(
 	@JvmField val yearTo: Int = YEAR_UNKNOWN,
 ) {
 
-	public fun isEmpty(): Boolean = tags.isEmpty() &&
+	private fun isNonSearchOptionsEmpty(): Boolean = tags.isEmpty() &&
 		tagsExclude.isEmpty() &&
 		locale == null &&
 		originalLocale == null &&
 		states.isEmpty() &&
 		contentRating.isEmpty() &&
-		query == null &&
 		year == YEAR_UNKNOWN &&
 		yearFrom == YEAR_UNKNOWN &&
 		yearTo == YEAR_UNKNOWN &&
 		types.isEmpty() &&
 		demographics.isEmpty()
 
+	public fun isEmpty(): Boolean = isNonSearchOptionsEmpty() && query.isNullOrEmpty()
+
+	public fun isNotEmpty(): Boolean = !isEmpty()
+
+	public fun hasNonSearchOptions(): Boolean = !isNonSearchOptionsEmpty()
+
 	public companion object {
 
 		@JvmStatic

src/main/kotlin/org/koitharu/kotatsu/parsers/model/MangaPage.kt

@@ -2,23 +2,23 @@ package org.koitharu.kotatsu.parsers.model
 
 import org.koitharu.kotatsu.parsers.MangaParser
 
-class MangaPage(
+public class MangaPage(
 	/**
 	 * Unique identifier for manga
 	 */
-	@JvmField val id: Long,
+	@JvmField public val id: Long,
 	/**
 	 * Relative url to page (**without** a domain) or any other uri.
 	 * Used principally in parsers.
 	 * May contain link to image or html page.
 	 * @see MangaParser.getPageUrl
 	 */
-	@JvmField val url: String,
+	@JvmField public val url: String,
 	/**
 	 * Absolute url of the small page image if exists, null otherwise
 	 */
-	@JvmField val preview: String?,
+	@JvmField public val preview: String?,
-	@JvmField val source: MangaSource,
+	@JvmField public val source: MangaSource,
 ) {
 
 	override fun equals(other: Any?): Boolean {

src/main/kotlin/org/koitharu/kotatsu/parsers/model/SortOrder.kt

@@ -1,6 +1,6 @@
 package org.koitharu.kotatsu.parsers.model
 
-enum class SortOrder {
+public enum class SortOrder {
 	UPDATED,
 	UPDATED_ASC,
 	POPULARITY,

src/main/kotlin/org/koitharu/kotatsu/parsers/network/OkHttpWebClient.kt

@@ -13,7 +13,7 @@ import org.koitharu.kotatsu.parsers.util.await
 import org.koitharu.kotatsu.parsers.util.parseJson
 import java.net.HttpURLConnection
 
-class OkHttpWebClient(
+public class OkHttpWebClient(
 	private val httpClient: OkHttpClient,
 	private val mangaSource: MangaSource,
 ) : WebClient {

src/main/kotlin/org/koitharu/kotatsu/parsers/network/UserAgents.kt

@@ -1,16 +1,17 @@
 package org.koitharu.kotatsu.parsers.network
 
-object UserAgents {
+public object UserAgents {
 
-	const val CHROME_MOBILE =
+	public const val CHROME_MOBILE: String =
 		"Mozilla/5.0 (Linux; Android 13) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.196 Mobile Safari/537.36"
 
-	const val FIREFOX_MOBILE = "Mozilla/5.0 (Android 14; Mobile; LG-M255; rv:123.0) Gecko/123.0 Firefox/123.0"
+	public const val FIREFOX_MOBILE: String =
+		"Mozilla/5.0 (Android 14; Mobile; LG-M255; rv:123.0) Gecko/123.0 Firefox/123.0"
 
-	const val CHROME_DESKTOP =
+	public const val CHROME_DESKTOP: String =
 		"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36"
 
-	const val FIREFOX_DESKTOP = "Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/116.0"
+	public const val FIREFOX_DESKTOP: String = "Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/116.0"
 
-	const val KOTATSU = "Kotatsu/6.8 (Android 13;;; en)"
+	public const val KOTATSU: String = "Kotatsu/6.8 (Android 13;;; en)"
 }

src/main/kotlin/org/koitharu/kotatsu/parsers/network/WebClient.kt

@@ -6,54 +6,55 @@ import okhttp3.HttpUrl.Companion.toHttpUrl
 import okhttp3.Response
 import org.json.JSONObject
 
-interface WebClient {
+public interface WebClient {
 
 	/**
 	 * Do a GET http request to specific url
 	 * @param url
 	 */
-	suspend fun httpGet(url: String): Response = httpGet(url.toHttpUrl())
+	public suspend fun httpGet(url: String): Response = httpGet(url.toHttpUrl())
 
-	suspend fun httpGet(url: String, extraHeaders: Headers?): Response = httpGet(url.toHttpUrl(), extraHeaders)
+	public suspend fun httpGet(url: String, extraHeaders: Headers?): Response = httpGet(url.toHttpUrl(), extraHeaders)
 
 	/**
 	 * Do a GET http request to specific url
 	 * @param url
 	 */
-	suspend fun httpGet(url: HttpUrl): Response = httpGet(url, null)
+	public suspend fun httpGet(url: HttpUrl): Response = httpGet(url, null)
 
 	/**
 	 * Do a GET http request to specific url
 	 * @param url
 	 * @param extraHeaders additional HTTP headers for request
 	 */
-	suspend fun httpGet(url: HttpUrl, extraHeaders: Headers?): Response
+	public suspend fun httpGet(url: HttpUrl, extraHeaders: Headers?): Response
 
 	/**
 	 * Do a HEAD http request to specific url
 	 * @param url
 	 */
-	suspend fun httpHead(url: String): Response = httpHead(url.toHttpUrl())
+	public suspend fun httpHead(url: String): Response = httpHead(url.toHttpUrl())
 
 	/**
 	 * Do a HEAD http request to specific url
 	 * @param url
 	 */
-	suspend fun httpHead(url: HttpUrl): Response
+	public suspend fun httpHead(url: HttpUrl): Response
 
 	/**
 	 * Do a POST http request to specific url with `multipart/form-data` payload
 	 * @param url
 	 * @param form payload as key=>value map
 	 */
-	suspend fun httpPost(url: String, form: Map<String, String>): Response = httpPost(url.toHttpUrl(), form, null)
+	public suspend fun httpPost(url: String, form: Map<String, String>): Response =
+		httpPost(url.toHttpUrl(), form, null)
 
 	/**
 	 * Do a POST http request to specific url with `multipart/form-data` payload
 	 * @param url
 	 * @param form payload as key=>value map
 	 */
-	suspend fun httpPost(url: HttpUrl, form: Map<String, String>): Response = httpPost(url, form, null)
+	public suspend fun httpPost(url: HttpUrl, form: Map<String, String>): Response = httpPost(url, form, null)
 
 	/**
 	 * Do a POST http request to specific url with `multipart/form-data` payload
@@ -61,21 +62,21 @@ interface WebClient {
 	 * @param form payload as key=>value map
 	 * @param extraHeaders additional HTTP headers for request
 	 */
-	suspend fun httpPost(url: HttpUrl, form: Map<String, String>, extraHeaders: Headers?): Response
+	public suspend fun httpPost(url: HttpUrl, form: Map<String, String>, extraHeaders: Headers?): Response
 
 	/**
 	 * Do a POST http request to specific url with `multipart/form-data` payload
 	 * @param url
 	 * @param payload payload as `key=value` string with `&` separator
 	 */
-	suspend fun httpPost(url: String, payload: String): Response = httpPost(url.toHttpUrl(), payload, null)
+	public suspend fun httpPost(url: String, payload: String): Response = httpPost(url.toHttpUrl(), payload, null)
 
 	/**
 	 * Do a POST http request to specific url with `multipart/form-data` payload
 	 * @param url
 	 * @param payload payload as `key=value` string with `&` separator
 	 */
-	suspend fun httpPost(url: HttpUrl, payload: String): Response = httpPost(url, payload, null)
+	public suspend fun httpPost(url: HttpUrl, payload: String): Response = httpPost(url, payload, null)
 
 	/**
 	 * Do a POST http request to specific url with `multipart/form-data` payload
@@ -83,21 +84,21 @@ interface WebClient {
 	 * @param payload payload as `key=value` string with `&` separator
 	 * @param extraHeaders additional HTTP headers for request
 	 */
-	suspend fun httpPost(url: HttpUrl, payload: String, extraHeaders: Headers?): Response
+	public suspend fun httpPost(url: HttpUrl, payload: String, extraHeaders: Headers?): Response
 
 	/**
 	 * Do a POST http request to specific url with json payload
 	 * @param url
 	 * @param body
 	 */
-	suspend fun httpPost(url: String, body: JSONObject): Response = httpPost(url.toHttpUrl(), body, null)
+	public suspend fun httpPost(url: String, body: JSONObject): Response = httpPost(url.toHttpUrl(), body, null)
 
 	/**
 	 * Do a POST http request to specific url with json payload
 	 * @param url
 	 * @param body
 	 */
-	suspend fun httpPost(url: HttpUrl, body: JSONObject): Response = httpPost(url, body, null)
+	public suspend fun httpPost(url: HttpUrl, body: JSONObject): Response = httpPost(url, body, null)
 
 	/**
 	 * Do a POST http request to specific url with json payload
@@ -105,12 +106,12 @@ interface WebClient {
 	 * @param body
 	 * @param extraHeaders additional HTTP headers for request
 	 */
-	suspend fun httpPost(url: HttpUrl, body: JSONObject, extraHeaders: Headers?): Response
+	public suspend fun httpPost(url: HttpUrl, body: JSONObject, extraHeaders: Headers?): Response
 
 	/**
 	 * Do a GraphQL request to specific url
 	 * @param endpoint an url
 	 * @param query GraphQL request payload
 	 */
-	suspend fun graphQLQuery(endpoint: String, query: String): JSONObject
+	public suspend fun graphQLQuery(endpoint: String, query: String): JSONObject
 }

src/main/kotlin/org/koitharu/kotatsu/parsers/site/all/BatoToParser.kt

@@ -177,12 +177,12 @@ internal class BatoToParser(context: MangaLoaderContext) : PagedMangaParser(
 
 					append("&genres=")
 					if (filter.tags.isNotEmpty()) {
-						appendAll(filter.tags, ",") { it.key }
+						filter.tags.joinTo(this, ",") { it.key }
 					}
 
 					append("|")
 					if (filter.tagsExclude.isNotEmpty()) {
-						appendAll(filter.tagsExclude, ",") { it.key }
+						filter.tagsExclude.joinTo(this, ",") { it.key }
 					}
 
 					if (filter.contentRating.isNotEmpty()) {

src/main/kotlin/org/koitharu/kotatsu/parsers/site/all/MangaPark.kt

@@ -79,14 +79,10 @@ internal class MangaPark(context: MangaLoaderContext) :
 			}
 
 			append("&genres=")
-			if (filter.tags.isNotEmpty()) {
+			filter.tags.joinTo(this, ",") { it.key }
-				appendAll(filter.tags, ",") { it.key }
-			}
 
 			append("|")
-			if (filter.tagsExclude.isNotEmpty()) {
+			filter.tagsExclude.joinTo(this, ",") { it.key }
-				appendAll(filter.tagsExclude, ",") { it.key }
-			}
 
 			if (filter.contentRating.isNotEmpty()) {
 				filter.contentRating.oneOrThrowIfMany()?.let {

src/main/kotlin/org/koitharu/kotatsu/parsers/site/iken/IkenParser.kt

@@ -61,7 +61,7 @@ internal abstract class IkenParser(
 
 					if (filter.tags.isNotEmpty()) {
 						append("&genreIds=")
-						appendAll(filter.tags, ",") { it.key }
+						filter.tags.joinTo(this, ",") { it.key }
 					}
 
 					append("&seriesType=&seriesStatus=")

src/main/kotlin/org/koitharu/kotatsu/parsers/site/ru/DesuMeParser.kt

@@ -56,7 +56,7 @@ internal class DesuMeParser(context: MangaLoaderContext) : PagedMangaParser(cont
 			append(page)
 			if (filter.tags.isNotEmpty()) {
 				append("&genres=")
-				appendAll(filter.tags, ",") { it.key }
+				filter.tags.joinTo(this, ",") { it.key }
 			}
 			if (!filter.query.isNullOrEmpty()) {
 				append("&search=")

src/main/kotlin/org/koitharu/kotatsu/parsers/util/Collection.kt

@@ -6,7 +6,7 @@ import androidx.collection.ArrayMap
 import androidx.collection.ArraySet
 import java.util.*
 
-fun <T> MutableCollection<T>.replaceWith(subject: Iterable<T>) {
+public fun <T> MutableCollection<T>.replaceWith(subject: Iterable<T>) {
 	clear()
 	addAll(subject)
 }
@@ -23,7 +23,7 @@ fun <T> List<T>.medianOrNull(): T? = when {
 	else -> get((size / 2).coerceIn(indices))
 }
 
-inline fun <T, R> Collection<T>.mapToSet(transform: (T) -> R): Set<R> {
+public inline fun <T, R> Collection<T>.mapToSet(transform: (T) -> R): Set<R> {
 	return mapTo(ArraySet(size), transform)
 }
 
@@ -35,13 +35,13 @@ inline fun <T, R> Collection<T>.mapNotNullToSet(transform: (T) -> R?): Set<R> {
 	return destination
 }
 
-inline fun <T, reified R> Array<T>.mapToArray(transform: (T) -> R): Array<R> = Array(size) { i ->
+public inline fun <T, reified R> Array<T>.mapToArray(transform: (T) -> R): Array<R> = Array(size) { i ->
 	transform(get(i))
 }
 
 fun <K, V> List<Pair<K, V>>.toMutableMap(): MutableMap<K, V> = toMap(ArrayMap(size))
 
-fun <T> MutableList<T>.move(sourceIndex: Int, targetIndex: Int) {
+public fun <T> MutableList<T>.move(sourceIndex: Int, targetIndex: Int) {
 	if (sourceIndex <= targetIndex) {
 		Collections.rotate(subList(sourceIndex, targetIndex + 1), -1)
 	} else {

src/main/kotlin/org/koitharu/kotatsu/parsers/util/CookieJar.kt

@@ -8,7 +8,7 @@ import okhttp3.HttpUrl
 
 private const val SCHEME_HTTPS = "https"
 
-fun CookieJar.insertCookies(domain: String, vararg cookies: String) {
+public fun CookieJar.insertCookies(domain: String, vararg cookies: String) {
 	val url = safeUrlOf(domain) ?: return
 	saveFromResponse(
 		url,
@@ -18,17 +18,17 @@ fun CookieJar.insertCookies(domain: String, vararg cookies: String) {
 	)
 }
 
-fun CookieJar.insertCookie(domain: String, cookie: Cookie) {
+public fun CookieJar.insertCookie(domain: String, cookie: Cookie) {
 	val url = safeUrlOf(domain) ?: return
 	saveFromResponse(url, listOf(cookie))
 }
 
-fun CookieJar.getCookies(domain: String): List<Cookie> {
+public fun CookieJar.getCookies(domain: String): List<Cookie> {
 	val url = safeUrlOf(domain) ?: return emptyList()
 	return loadForRequest(url)
 }
 
-fun CookieJar.copyCookies(oldDomain: String, newDomain: String, names: Array<String>? = null) {
+public fun CookieJar.copyCookies(oldDomain: String, newDomain: String, names: Array<String>? = null) {
 	val url = HttpUrl.Builder()
 		.scheme(SCHEME_HTTPS)
 		.host(oldDomain)

src/main/kotlin/org/koitharu/kotatsu/parsers/util/CryptoAES.kt

@@ -1,11 +1,13 @@
 package org.koitharu.kotatsu.parsers.util
 
+import org.koitharu.kotatsu.parsers.InternalParsersApi
 import org.koitharu.kotatsu.parsers.MangaLoaderContext
 import java.security.MessageDigest
 import java.util.*
 import javax.crypto.Cipher
 import javax.crypto.spec.IvParameterSpec
 import javax.crypto.spec.SecretKeySpec
+import kotlin.Throws
 
 private const val HASH_CIPHER = "AES/CBC/PKCS7PADDING"
 private const val AES = "AES"
@@ -14,7 +16,8 @@ private const val KDF_DIGEST = "MD5"
 /**
  * Conforming with CryptoJS AES method
  */
-class CryptoAES(
+@InternalParsersApi
+public class CryptoAES(
 	private val context: MangaLoaderContext,
 ) {
 
@@ -27,7 +30,7 @@ class CryptoAES(
 	 * @param password passphrase
 	 */
 	@Throws(Exception::class)
-	fun decrypt(cipherText: String, password: String): String {
+	public fun decrypt(cipherText: String, password: String): String {
 		val ctBytes = context.decodeBase64(cipherText)
 		val saltBytes = Arrays.copyOfRange(ctBytes, 8, 16)
 		val cipherTextBytes = Arrays.copyOfRange(ctBytes, 16, ctBytes.size)
@@ -48,7 +51,7 @@ class CryptoAES(
 	 * @param ivBytes iv as a bytearray
 	 */
 	@Throws(Exception::class)
-	fun decrypt(cipherText: String, keyBytes: ByteArray, ivBytes: ByteArray): String {
+	public fun decrypt(cipherText: String, keyBytes: ByteArray, ivBytes: ByteArray): String {
 		val cipherTextBytes = context.decodeBase64(cipherText)
 		return decryptAES(cipherTextBytes, keyBytes, ivBytes)
 	}

src/main/kotlin/org/koitharu/kotatsu/parsers/util/Jsoup.kt

@@ -7,6 +7,7 @@ import org.jsoup.nodes.Element
 import org.jsoup.select.Elements
 import org.jsoup.select.QueryParser
 import org.jsoup.select.Selector
+import org.koitharu.kotatsu.parsers.InternalParsersApi
 import org.koitharu.kotatsu.parsers.exception.ParseException
 
 val Element.host: String?
@@ -154,8 +155,22 @@ fun Element.attrOrNull(vararg names: String): String? {
 	return null
 }
 
+@InternalParsersApi
 @JvmOverloads
-fun Element.src(names: Array<String> = arrayOf("data-src", "data-cfsrc", "data-original", "data-cdn", "data-sizes", "data-lazy-src", "data-srcset", "original-src", "data-wpfc-original-src", "src")): String? {
+public fun Element.src(
+	names: Array<String> = arrayOf(
+		"data-src",
+		"data-cfsrc",
+		"data-original",
+		"data-cdn",
+		"data-sizes",
+		"data-lazy-src",
+		"data-srcset",
+		"original-src",
+		"data-wpfc-original-src",
+		"src",
+	),
+): String? {
 	for (name in names) {
 		val value = attrAsAbsoluteUrlOrNull(name)
 		if (value != null) {

src/main/kotlin/org/koitharu/kotatsu/parsers/util/MangaParserEnv.kt

@@ -17,7 +17,7 @@ import org.koitharu.kotatsu.parsers.model.*
  * @see [MangaPage.id]
  */
 @InternalParsersApi
-fun MangaParser.generateUid(url: String): Long {
+public fun MangaParser.generateUid(url: String): Long {
 	var h = 1125899906842597L
 	source.name.forEach { c ->
 		h = 31 * h + c.code
@@ -36,7 +36,7 @@ fun MangaParser.generateUid(url: String): Long {
  * @see [MangaPage.id]
  */
 @InternalParsersApi
-fun MangaParser.generateUid(id: Long): Long {
+public fun MangaParser.generateUid(id: Long): Long {
 	var h = 1125899906842597L
 	source.name.forEach { c ->
 		h = 31 * h + c.code
@@ -46,32 +46,32 @@ fun MangaParser.generateUid(id: Long): Long {
 }
 
 @InternalParsersApi
-fun Element.parseFailed(message: String? = null): Nothing {
+public fun Element.parseFailed(message: String? = null): Nothing {
 	throw ParseException(message, ownerDocument()?.location() ?: baseUri(), null)
 }
 
 @InternalParsersApi
-fun Set<MangaTag>?.oneOrThrowIfMany(): MangaTag? = oneOrThrowIfMany(
+public fun Set<MangaTag>?.oneOrThrowIfMany(): MangaTag? = oneOrThrowIfMany(
 	ErrorMessages.FILTER_MULTIPLE_GENRES_NOT_SUPPORTED,
 )
 
 @InternalParsersApi
-fun Set<MangaState>?.oneOrThrowIfMany(): MangaState? = oneOrThrowIfMany(
+public fun Set<MangaState>?.oneOrThrowIfMany(): MangaState? = oneOrThrowIfMany(
 	ErrorMessages.FILTER_MULTIPLE_STATES_NOT_SUPPORTED,
 )
 
 @InternalParsersApi
-fun Set<ContentType>?.oneOrThrowIfMany(): ContentType? = oneOrThrowIfMany(
+public fun Set<ContentType>?.oneOrThrowIfMany(): ContentType? = oneOrThrowIfMany(
 	ErrorMessages.FILTER_MULTIPLE_CONTENT_TYPES_NOT_SUPPORTED,
 )
 
 @InternalParsersApi
-fun Set<Demographic>?.oneOrThrowIfMany(): Demographic? = oneOrThrowIfMany(
+public fun Set<Demographic>?.oneOrThrowIfMany(): Demographic? = oneOrThrowIfMany(
 	ErrorMessages.FILTER_MULTIPLE_DEMOGRAPHICS_NOT_SUPPORTED,
 )
 
 @InternalParsersApi
-fun Set<ContentRating>?.oneOrThrowIfMany(): ContentRating? = oneOrThrowIfMany(
+public fun Set<ContentRating>?.oneOrThrowIfMany(): ContentRating? = oneOrThrowIfMany(
 	ErrorMessages.FILTER_MULTIPLE_CONTENT_RATING_NOT_SUPPORTED,
 )
 
@@ -81,17 +81,19 @@ private fun <T> Set<T>?.oneOrThrowIfMany(msg: String): T? = when {
 	else -> throw IllegalArgumentException(msg)
 }
 
-val MangaParser.domain: String
+public val MangaParser.domain: String
 	get() {
 		return config[configKeyDomain]
 	}
 
-fun MangaParser.getDomain(subdomain: String): String {
+@InternalParsersApi
+public fun MangaParser.getDomain(subdomain: String): String {
 	val domain = domain
 	return subdomain + "." + domain.removePrefix("www.")
 }
 
-fun MangaParser.urlBuilder(subdomain: String? = null): HttpUrl.Builder {
+@InternalParsersApi
+public fun MangaParser.urlBuilder(subdomain: String? = null): HttpUrl.Builder {
 	return HttpUrl.Builder()
 		.scheme("https")
 		.host(if (subdomain == null) domain else "$subdomain.$domain")

src/main/kotlin/org/koitharu/kotatsu/parsers/util/MangaParsersUtils.kt

@@ -0,0 +1,13 @@
+@file:JvmName("MangaParsersUtils")
+
+package org.koitharu.kotatsu.parsers.util
+
+import org.koitharu.kotatsu.parsers.model.MangaListFilter
+import kotlin.contracts.contract
+
+public fun MangaListFilter?.isNullOrEmpty(): Boolean {
+	contract {
+		returns(false) implies (this@isNullOrEmpty != null)
+	}
+	return this == null || this.isEmpty()
+}

src/main/kotlin/org/koitharu/kotatsu/parsers/util/Number.kt

@@ -7,7 +7,7 @@ import java.text.NumberFormat
 import java.util.*
 import kotlin.math.absoluteValue
 
-fun Number.format(decimals: Int = 0, decPoint: Char = '.', thousandsSep: Char? = ' '): String {
+public fun Number.format(decimals: Int = 0, decPoint: Char = '.', thousandsSep: Char? = ' '): String {
 	val formatter = NumberFormat.getInstance(Locale.US) as DecimalFormat
 	val symbols = formatter.decimalFormatSymbols
 	if (thousandsSep != null) {
@@ -29,7 +29,7 @@ fun Number.format(decimals: Int = 0, decPoint: Char = '.', thousandsSep: Char? =
 	}
 }
 
-fun Float.toIntUp(): Int {
+public fun Float.toIntUp(): Int {
 	val intValue = toInt()
 	return if ((this - intValue.toFloat()).absoluteValue <= 0.00001) {
 		intValue
@@ -38,7 +38,7 @@ fun Float.toIntUp(): Int {
 	}
 }
 
-infix fun Int.upBy(step: Int): Int {
+public infix fun Int.upBy(step: Int): Int {
 	val mod = this % step
 	return if (mod == 0) {
 		this
@@ -47,7 +47,7 @@ infix fun Int.upBy(step: Int): Int {
 	}
 }
 
-fun Number.formatSimple(): String {
+public fun Number.formatSimple(): String {
 	val raw = toString()
 	return if (raw.endsWith(".0") || raw.endsWith(",0")) {
 		raw.dropLast(2)
@@ -56,7 +56,7 @@ fun Number.formatSimple(): String {
 	}
 }
 
-inline fun Int.ifZero(defaultVale: () -> Int): Int = if (this == 0) {
+public inline fun Int.ifZero(defaultVale: () -> Int): Int = if (this == 0) {
 	defaultVale()
 } else {
 	this

src/main/kotlin/org/koitharu/kotatsu/parsers/util/OkHttp.kt

@@ -7,19 +7,19 @@ import okhttp3.Call
 import okhttp3.Headers
 import okhttp3.Response
 
-suspend fun Call.await(): Response = suspendCancellableCoroutine { continuation ->
+public suspend fun Call.await(): Response = suspendCancellableCoroutine { continuation ->
 	val callback = ContinuationCallCallback(this, continuation)
 	enqueue(callback)
 	continuation.invokeOnCancellation(callback)
 }
 
-val Response.mimeType: String?
+public val Response.mimeType: String?
 	get() = header("content-type")?.takeUnless { it.isEmpty() }
 
-val Response.contentDisposition: String?
+public val Response.contentDisposition: String?
 	get() = header("Content-Disposition")
 
-fun Headers.Builder.mergeWith(other: Headers, replaceExisting: Boolean): Headers.Builder {
+public fun Headers.Builder.mergeWith(other: Headers, replaceExisting: Boolean): Headers.Builder {
 	for ((name, value) in other) {
 		if (replaceExisting || this[name] == null) {
 			this[name] = value
@@ -28,11 +28,11 @@ fun Headers.Builder.mergeWith(other: Headers, replaceExisting: Boolean): Headers
 	return this
 }
 
-fun Response.copy() = newBuilder()
+public fun Response.copy(): Response = newBuilder()
 	.body(peekBody(Long.MAX_VALUE))
 	.build()
 
-fun Response.Builder.setHeader(name: String, value: String?) = if (value == null) {
+public fun Response.Builder.setHeader(name: String, value: String?): Response.Builder = if (value == null) {
 	removeHeader(name)
 } else {
 	header(name, value)

src/main/kotlin/org/koitharu/kotatsu/parsers/util/Paginator.kt

@@ -3,12 +3,12 @@ package org.koitharu.kotatsu.parsers.util
 import androidx.collection.SparseArrayCompat
 import androidx.collection.set
 
-class Paginator(private val initialPageSize: Int) {
+public class Paginator internal constructor(private val initialPageSize: Int) {
 
-	var firstPage = 1
+	public var firstPage: Int = 1
 	private var pages = SparseArrayCompat<Int>()
 
-	fun getPage(offset: Int): Int {
+	internal fun getPage(offset: Int): Int {
 		if (offset == 0) { // just an optimization
 			return firstPage
 		}
@@ -19,7 +19,7 @@ class Paginator(private val initialPageSize: Int) {
 		return intPage + firstPage + if (tail == 0) 0 else 1
 	}
 
-	fun onListReceived(offset: Int, page: Int, count: Int) {
+	internal fun onListReceived(offset: Int, page: Int, count: Int) {
 		pages[offset + count] = if (count > 0) page + 1 else page
 	}
 }

src/main/kotlin/org/koitharu/kotatsu/parsers/util/Parse.kt

@@ -5,10 +5,12 @@ package org.koitharu.kotatsu.parsers.util
 import okhttp3.Response
 import okhttp3.ResponseBody
 import okhttp3.internal.closeQuietly
+import org.jetbrains.annotations.Blocking
 import org.json.JSONArray
 import org.json.JSONObject
 import org.jsoup.Jsoup
 import org.jsoup.nodes.Document
+import org.koitharu.kotatsu.parsers.InternalParsersApi
 import java.text.DateFormat
 
 /**
@@ -16,7 +18,8 @@ import java.text.DateFormat
  * @see [parseJson]
  * @see [parseJsonArray]
  */
-fun Response.parseHtml(): Document = try {
+@Blocking
+public fun Response.parseHtml(): Document = try {
 	val body = requireBody()
 	val charset = body.contentType()?.charset()?.name()
 	Jsoup.parse(body.byteStream(), charset, request.url.toString())
@@ -29,7 +32,7 @@ fun Response.parseHtml(): Document = try {
  * @see [parseJsonArray]
  * @see [parseHtml]
  */
-fun Response.parseJson(): JSONObject = try {
+public fun Response.parseJson(): JSONObject = try {
 	JSONObject(requireBody().string())
 } finally {
 	closeQuietly()
@@ -40,19 +43,19 @@ fun Response.parseJson(): JSONObject = try {
  * @see [parseJson]
  * @see [parseHtml]
  */
-fun Response.parseJsonArray(): JSONArray = try {
+public fun Response.parseJsonArray(): JSONArray = try {
 	JSONArray(requireBody().string())
 } finally {
 	closeQuietly()
 }
 
-fun Response.parseRaw(): String = try {
+public fun Response.parseRaw(): String = try {
 	requireBody().string()
 } finally {
 	closeQuietly()
 }
 
-fun Response.parseBytes(): ByteArray = try {
+public fun Response.parseBytes(): ByteArray = try {
 	requireBody().bytes()
 } finally {
 	closeQuietly()
@@ -62,7 +65,7 @@ fun Response.parseBytes(): ByteArray = try {
  * Convert url to relative if it is on [domain]
  * @return an url relative to the [domain] or absolute, if domain is mismatching
  */
-fun String.toRelativeUrl(domain: String): String {
+public fun String.toRelativeUrl(domain: String): String {
 	if (isEmpty() || startsWith("/")) {
 		return this
 	}
@@ -73,13 +76,13 @@ fun String.toRelativeUrl(domain: String): String {
  * Convert url to absolute with specified domain
  * @return an absolute url with [domain] if this is relative
  */
-fun String.toAbsoluteUrl(domain: String): String = when {
+public fun String.toAbsoluteUrl(domain: String): String = when {
 	this.startsWith("//") -> "https:$this"
 	this.startsWith('/') -> "https://$domain$this"
 	else -> this
 }
 
-fun concatUrl(host: String, path: String): String {
+public fun concatUrl(host: String, path: String): String {
 	val hostWithSlash = host.endsWith('/')
 	val pathWithSlash = path.startsWith('/')
 	val hostWithScheme = if (host.startsWith("//")) "https:$host" else host
@@ -90,7 +93,8 @@ fun concatUrl(host: String, path: String): String {
 	}
 }
 
-fun DateFormat.tryParse(str: String?): Long = if (str.isNullOrEmpty()) {
+@InternalParsersApi
+public fun DateFormat.tryParse(str: String?): Long = if (str.isNullOrEmpty()) {
 //	assert(false) { "Date string is null or empty" }
 	0L
 } else {

src/main/kotlin/org/koitharu/kotatsu/parsers/util/RelatedMangaFinder.kt

@@ -9,13 +9,13 @@ import org.koitharu.kotatsu.parsers.model.Manga
 import org.koitharu.kotatsu.parsers.model.MangaListFilter
 import org.koitharu.kotatsu.parsers.model.SortOrder
 
-class RelatedMangaFinder(
+public class RelatedMangaFinder(
 	private val parsers: Collection<MangaParser>,
 ) {
 
 	private val regexWhitespace = Regex("\\s+")
 
-	suspend operator fun invoke(seed: Manga): List<Manga> = coroutineScope {
+	public suspend operator fun invoke(seed: Manga): List<Manga> = coroutineScope {
 		parsers.singleOrNull()?.let { parser ->
 			findRelatedImpl(this, parser, seed)
 		} ?: parsers.map { parser ->

src/main/kotlin/org/koitharu/kotatsu/parsers/util/Result.kt

@@ -2,7 +2,7 @@ package org.koitharu.kotatsu.parsers.util
 
 import kotlinx.coroutines.CancellationException
 
-inline fun <T, R> T.runCatchingCancellable(block: T.() -> R): Result<R> {
+public inline fun <T, R> T.runCatchingCancellable(block: T.() -> R): Result<R> {
 	return try {
 		Result.success(block())
 	} catch (e: InterruptedException) {
@@ -14,14 +14,14 @@ inline fun <T, R> T.runCatchingCancellable(block: T.() -> R): Result<R> {
 	}
 }
 
-inline fun <R, T : R> Result<T>.recoverCatchingCancellable(transform: (exception: Throwable) -> R): Result<R> {
+public inline fun <R, T : R> Result<T>.recoverCatchingCancellable(transform: (exception: Throwable) -> R): Result<R> {
 	return when (val exception = exceptionOrNull()) {
 		null -> this
 		else -> runCatchingCancellable { transform(exception) }
 	}
 }
 
-inline fun <R : Any, T : R> Result<T>.recoverNotNull(transform: (exception: Throwable) -> R?): Result<R> {
+public inline fun <R : Any, T : R> Result<T>.recoverNotNull(transform: (exception: Throwable) -> R?): Result<R> {
 	return when (val exception = exceptionOrNull()) {
 		null -> this
 		else -> transform(exception)?.let(Result.Companion::success) ?: this

src/main/kotlin/org/koitharu/kotatsu/parsers/util/SoftSuspendLazy.kt

@@ -7,14 +7,14 @@ import java.lang.ref.SoftReference
 /**
  * Like a [SuspendLazy] but with [SoftReference] under the hood
  */
-class SoftSuspendLazy<T : Any>(
+public class SoftSuspendLazy<T : Any>(
 	private val initializer: suspend () -> T,
 ) {
 
 	private val mutex = Mutex()
 	private var cachedValue: SoftReference<T>? = null
 
-	suspend fun get(): T {
+	public suspend fun get(): T {
 		// fast way
 		cachedValue?.get()?.let {
 			return it
@@ -29,9 +29,9 @@ class SoftSuspendLazy<T : Any>(
 		}
 	}
 
-	suspend fun tryGet() = runCatchingCancellable { get() }
+	public suspend fun tryGet(): Result<T> = runCatchingCancellable { get() }
 
-	fun peek(): T? {
+	public fun peek(): T? {
 		return cachedValue?.get()
 	}
 }

src/main/kotlin/org/koitharu/kotatsu/parsers/util/String.kt

@@ -12,7 +12,7 @@ import java.security.MessageDigest
 import java.util.*
 import kotlin.math.min
 
-fun String.removeSurrounding(vararg chars: Char): String {
+public fun String.removeSurrounding(vararg chars: Char): String {
 	if (isEmpty()) {
 		return this
 	}
@@ -24,7 +24,7 @@ fun String.removeSurrounding(vararg chars: Char): String {
 	return this
 }
 
-fun String.toCamelCase(): String {
+public fun String.toCamelCase(): String {
 	if (isEmpty()) {
 		return this
 	}
@@ -43,15 +43,15 @@ fun String.toCamelCase(): String {
 	return result.toString()
 }
 
-fun String.toTitleCase(): String {
+public fun String.toTitleCase(): String {
 	return replaceFirstChar { x -> x.uppercase() }
 }
 
-fun String.toTitleCase(locale: Locale): String {
+public fun String.toTitleCase(locale: Locale): String {
 	return replaceFirstChar { x -> x.uppercase(locale) }
 }
 
-fun String.transliterate(skipMissing: Boolean): String {
+public fun String.transliterate(skipMissing: Boolean): String {
 	val cyr = charArrayOf(
 		'а', 'б', 'в', 'г', 'д', 'е', 'ж', 'з', 'и', 'й', 'к', 'л', 'м', 'н', 'о', 'п',
 		'р', 'с', 'т', 'у', 'ф', 'х', 'ц', 'ч', 'ш', 'щ', 'ъ', 'ы', 'ь', 'э', 'ю', 'я', 'ё', 'ў',
@@ -76,15 +76,15 @@ fun String.transliterate(skipMissing: Boolean): String {
 	}
 }
 
-fun String.toFileNameSafe() = this.transliterate(false)
+public fun String.toFileNameSafe() = this.transliterate(false)
 	.replace(Regex("[^a-z0-9_\\-]", arraySetOf(RegexOption.IGNORE_CASE)), " ")
 	.replace(Regex("\\s+"), "_")
 
-fun String.ellipsize(maxLength: Int) = if (this.length > maxLength) {
+public fun String.ellipsize(maxLength: Int) = if (this.length > maxLength) {
 	this.take(maxLength - 1) + Typography.ellipsis
 } else this
 
-fun String.splitTwoParts(delimiter: Char): Pair<String, String>? {
+public fun String.splitTwoParts(delimiter: Char): Pair<String, String>? {
 	val indices = MutableIntList(4)
 	for ((i, c) in this.withIndex()) {
 		if (c == delimiter) {
@@ -98,13 +98,13 @@ fun String.splitTwoParts(delimiter: Char): Pair<String, String>? {
 	return substring(0, index) to substring(index + 1)
 }
 
-fun String.urlEncoded(): String = URLEncoder.encode(this, Charsets.UTF_8.name())
+public fun String.urlEncoded(): String = URLEncoder.encode(this, Charsets.UTF_8.name())
 
-fun String.urlDecode(): String = URLDecoder.decode(this, Charsets.UTF_8.name())
+public fun String.urlDecode(): String = URLDecoder.decode(this, Charsets.UTF_8.name())
 
-fun String.nl2br() = replace("\n", "<br>")
+public fun String.nl2br() = replace("\n", "<br>")
 
-fun ByteArray.byte2HexFormatted(): String {
+public fun ByteArray.byte2HexFormatted(): String {
 	val str = StringBuilder(size * 2)
 	for (i in indices) {
 		var h = Integer.toHexString(this[i].toInt())
@@ -123,14 +123,14 @@ fun ByteArray.byte2HexFormatted(): String {
 	return str.toString()
 }
 
-fun String.md5(): String {
+public fun String.md5(): String {
 	val md = MessageDigest.getInstance("MD5")
 	return BigInteger(1, md.digest(toByteArray()))
 		.toString(16)
 		.padStart(32, '0')
 }
 
-fun String.substringBetween(from: String, to: String, fallbackValue: String = this): String {
+public fun String.substringBetween(from: String, to: String, fallbackValue: String = this): String {
 	val fromIndex = indexOf(from)
 	if (fromIndex == -1) {
 		return fallbackValue
@@ -143,7 +143,7 @@ fun String.substringBetween(from: String, to: String, fallbackValue: String = th
 	}
 }
 
-fun String.substringBetweenFirst(from: String, to: String): String? {
+public fun String.substringBetweenFirst(from: String, to: String): String? {
 	val fromIndex = indexOf(from)
 	if (fromIndex == -1) {
 		return null
@@ -156,7 +156,7 @@ fun String.substringBetweenFirst(from: String, to: String): String? {
 	}
 }
 
-fun String.substringBetweenLast(from: String, to: String, fallbackValue: String = this): String {
+public fun String.substringBetweenLast(from: String, to: String, fallbackValue: String = this): String {
 	val fromIndex = lastIndexOf(from)
 	if (fromIndex == -1) {
 		return fallbackValue
@@ -169,16 +169,16 @@ fun String.substringBetweenLast(from: String, to: String, fallbackValue: String
 	}
 }
 
-fun String.find(regex: Regex) = regex.find(this)?.value
+public fun String.find(regex: Regex) = regex.find(this)?.value
 
-fun String.removeSuffix(suffix: Char): String {
+public fun String.removeSuffix(suffix: Char): String {
 	if (lastOrNull() == suffix) {
 		return substring(0, length - 1)
 	}
 	return this
 }
 
-fun String.levenshteinDistance(other: String): Int {
+public fun String.levenshteinDistance(other: String): Int {
 	if (this == other) {
 		return 0
 	}
@@ -219,7 +219,7 @@ fun String.levenshteinDistance(other: String): Int {
 /**
  * @param threshold 0 = exact match
  */
-fun String.almostEquals(other: String, @FloatRange(from = 0.0) threshold: Float): Boolean {
+public fun String.almostEquals(other: String, @FloatRange(from = 0.0) threshold: Float): Boolean {
 	if (threshold <= 0f) {
 		return equals(other, ignoreCase = true)
 	}
@@ -227,24 +227,7 @@ fun String.almostEquals(other: String, @FloatRange(from = 0.0) threshold: Float)
 	return diff < threshold
 }
 
-
+public fun String.isNumeric() = all { c -> c.isDigit() }
-inline fun <T> Appendable.appendAll(
-	items: Iterable<T>,
-	separator: CharSequence,
-	transform: (T) -> CharSequence = { it.toString() },
-) {
-	var isFirst = true
-	for (item in items) {
-		if (isFirst) {
-			isFirst = false
-		} else {
-			append(separator)
-		}
-		append(transform(item))
-	}
-}
-
-fun String.isNumeric() = all { c -> c.isDigit() }
 
 internal fun StringBuilder.removeTrailingZero() {
 	if (length > 2 && get(length - 1) == '0') {

src/main/kotlin/org/koitharu/kotatsu/parsers/util/SuspendLazy.kt

@@ -3,7 +3,7 @@ package org.koitharu.kotatsu.parsers.util
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
 
-class SuspendLazy<T>(
+public class SuspendLazy<T>(
 	private val initializer: suspend () -> T,
 ) {
 
@@ -11,7 +11,7 @@ class SuspendLazy<T>(
 	private var cachedValue: Any? = Uninitialized
 
 	@Suppress("UNCHECKED_CAST")
-	suspend fun get(): T {
+	public suspend fun get(): T {
 		// fast way
 		cachedValue.let {
 			if (it !== Uninitialized) {
@@ -30,10 +30,10 @@ class SuspendLazy<T>(
 		}
 	}
 
-	suspend fun tryGet() = runCatchingCancellable { get() }
+	public suspend fun tryGet(): Result<T> = runCatchingCancellable { get() }
 
 	@Suppress("UNCHECKED_CAST")
-	fun peek(): T? {
+	public fun peek(): T? {
 		return cachedValue?.takeUnless { it === Uninitialized } as T?
 	}
 

src/main/kotlin/org/koitharu/kotatsu/parsers/util/json/EscapeUtils.kt

@@ -1,6 +1,6 @@
 package org.koitharu.kotatsu.parsers.util.json
 
-fun String.unescapeJson(): String {
+public fun String.unescapeJson(): String {
 	val builder = StringBuilder()
 	var i = 0
 	while (i < length) {

src/main/kotlin/org/koitharu/kotatsu/parsers/util/json/JsonExt.kt

@@ -130,7 +130,7 @@ fun JSONArray.associateByKey(key: String): Map<String, JSONObject> {
 	return destination
 }
 
-fun JSONArray?.isNullOrEmpty(): Boolean {
+public fun JSONArray?.isNullOrEmpty(): Boolean {
 	contract {
 		returns(false) implies (this@isNullOrEmpty != null)
 	}