Use ComicInfo.xml for chapter metadata in localSource (#2332)

Co-authored-by: AntsyLich <59261191+AntsyLich@users.noreply.github.com>

CHANGELOG.md

@@ -11,6 +11,9 @@ The format is a modified version of [Keep a Changelog](https://keepachangelog.co
 - `Other` - for technical stuff.
 
 ## [Unreleased]
+### Changed
+- LocalSource now reads ComicInfo.xml file for chapter (if available) to display chapter title, number and scanlator ([@raxod502](https://github.com/radian-software)) ([#2332](https://github.com/mihonapp/mihon/pull/2332))
+
 ### Fixes
 - Fixed scrollbar sometimes not showing during scroll or not reaching the bottom with few items ([@anirudhsnayak](https://github.com/anirudhsnayak)) ([#2304](https://github.com/mihonapp/mihon/pull/2304))
 

source-local/src/androidMain/kotlin/tachiyomi/source/local/LocalSource.kt

@@ -190,7 +190,7 @@ actual class LocalSource(
                 noXmlFile == null -> {
                     val chapterArchives = mangaDirFiles.filter(Archive::isSupported)
 
-                    val copiedFile = copyComicInfoFileFromArchive(chapterArchives, mangaDir)
+                    val copiedFile = copyComicInfoFileFromChapters(chapterArchives, mangaDir)
                     if (copiedFile != null) {
                         setMangaDetailsFromComicInfoFile(copiedFile.openInputStream(), manga)
                     } else {
@@ -206,13 +206,24 @@ actual class LocalSource(
         return@withIOContext manga
     }
 
-    private fun copyComicInfoFileFromArchive(chapterArchives: List<UniFile>, folder: UniFile): UniFile? {
+    private fun <T> getComicInfoForChapter(chapter: UniFile, block: (InputStream) -> T): T? {
+        if (chapter.isDirectory) {
+            return chapter.findFile(COMIC_INFO_FILE)?.let { file ->
+                file.openInputStream().use(block)
+            }
+        } else {
+            return chapter.archiveReader(context).use { reader ->
+                reader.getInputStream(COMIC_INFO_FILE)?.use(block)
+            }
+        }
+    }
+
+    private fun copyComicInfoFileFromChapters(chapterArchives: List<UniFile>, folder: UniFile): UniFile? {
         for (chapter in chapterArchives) {
-            chapter.archiveReader(context).use { reader ->
+            val file = getComicInfoForChapter(chapter) f@{ stream ->
-                reader.getInputStream(COMIC_INFO_FILE)?.use { stream ->
+                return@f copyComicInfoFile(stream, folder)
-                    return copyComicInfoFile(stream, folder)
-                }
             }
+            if (file != null) return file
         }
         return null
     }
@@ -225,12 +236,22 @@ actual class LocalSource(
         }
     }
 
-    private fun setMangaDetailsFromComicInfoFile(stream: InputStream, manga: SManga) {
+    private fun parseComicInfo(stream: InputStream): ComicInfo {
-        val comicInfo = AndroidXmlReader(stream, StandardCharsets.UTF_8.name()).use {
+        return AndroidXmlReader(stream, StandardCharsets.UTF_8.name()).use {
             xml.decodeFromReader<ComicInfo>(it)
         }
+    }
 
-        manga.copyFromComicInfo(comicInfo)
+    private fun setMangaDetailsFromComicInfoFile(stream: InputStream, manga: SManga) {
+        manga.copyFromComicInfo(parseComicInfo(stream))
+    }
+
+    private fun setChapterDetailsFromComicInfoFile(stream: InputStream, chapter: SChapter) {
+        val comicInfo = parseComicInfo(stream)
+
+        comicInfo.title?.let { chapter.name = it.value }
+        comicInfo.number?.value?.toFloatOrNull()?.let { chapter.chapter_number = it }
+        comicInfo.translator?.let { chapter.scanlator = it.value }
     }
 
     // Chapters
@@ -257,6 +278,10 @@ actual class LocalSource(
                         format.file.epubReader(context).use { epub ->
                             epub.fillMetadata(manga, this)
                         }
+                    } else {
+                        getComicInfoForChapter(chapterFile) { stream ->
+                            setChapterDetailsFromComicInfoFile(stream, this)
+                        }
                     }
                 }
             }