From 697efb118af4dd79acf7b007bc8334ced22d3b99 Mon Sep 17 00:00:00 2001
From: Acclorite <140836141+Acclorite@users.noreply.github.com>
Date: Wed, 5 Mar 2025 18:24:22 +0200
Subject: [PATCH] =?UTF-8?q?=F0=9F=9B=A0=EF=B8=8F=20XML=20parser=20for=20FB?=
 =?UTF-8?q?2?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

* New XmlTextParser to parse FB2
---
 .../book_story/data/parser/TextParserImpl.kt  |  6 ++-
 .../data/parser/xml/XmlTextParser.kt          | 51 +++++++++++++++++++
 2 files changed, 55 insertions(+), 2 deletions(-)
 create mode 100644 app/src/main/java/ua/acclorite/book_story/data/parser/xml/XmlTextParser.kt

diff --git a/app/src/main/java/ua/acclorite/book_story/data/parser/TextParserImpl.kt b/app/src/main/java/ua/acclorite/book_story/data/parser/TextParserImpl.kt
index d7ac5354..c9f476b3 100644
--- a/app/src/main/java/ua/acclorite/book_story/data/parser/TextParserImpl.kt
+++ b/app/src/main/java/ua/acclorite/book_story/data/parser/TextParserImpl.kt
@@ -13,6 +13,7 @@ import ua.acclorite.book_story.data.parser.epub.EpubTextParser
 import ua.acclorite.book_story.data.parser.html.HtmlTextParser
 import ua.acclorite.book_story.data.parser.pdf.PdfTextParser
 import ua.acclorite.book_story.data.parser.txt.TxtTextParser
+import ua.acclorite.book_story.data.parser.xml.XmlTextParser
 import ua.acclorite.book_story.domain.file.CachedFile
 import ua.acclorite.book_story.domain.reader.ReaderText
 import javax.inject.Inject
@@ -26,7 +27,8 @@ class TextParserImpl @Inject constructor(
 
     // Document parser (HTML+Markdown)
     private val epubTextParser: EpubTextParser,
-    private val htmlTextParser: HtmlTextParser
+    private val htmlTextParser: HtmlTextParser,
+    private val xmlTextParser: XmlTextParser
 ) : TextParser {
 
     override suspend fun parse(cachedFile: CachedFile): List<ReaderText> {
@@ -51,7 +53,7 @@ class TextParserImpl @Inject constructor(
                 }
 
                 ".fb2" -> {
-                    htmlTextParser.parse(cachedFile)
+                    xmlTextParser.parse(cachedFile)
                 }
 
                 ".html" -> {
diff --git a/app/src/main/java/ua/acclorite/book_story/data/parser/xml/XmlTextParser.kt b/app/src/main/java/ua/acclorite/book_story/data/parser/xml/XmlTextParser.kt
new file mode 100644
index 00000000..736c5f89
--- /dev/null
+++ b/app/src/main/java/ua/acclorite/book_story/data/parser/xml/XmlTextParser.kt
@@ -0,0 +1,51 @@
+/*
+ * Book's Story — free and open-source Material You eBook reader.
+ * Copyright (C) 2024-2025 Acclorite
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+package ua.acclorite.book_story.data.parser.xml
+
+import android.util.Log
+import kotlinx.coroutines.yield
+import org.jsoup.Jsoup
+import org.jsoup.parser.Parser
+import ua.acclorite.book_story.data.parser.DocumentParser
+import ua.acclorite.book_story.data.parser.TextParser
+import ua.acclorite.book_story.domain.file.CachedFile
+import ua.acclorite.book_story.domain.reader.ReaderText
+import javax.inject.Inject
+
+private const val XML_TAG = "XML Parser"
+
+class XmlTextParser @Inject constructor(
+    private val documentParser: DocumentParser
+) : TextParser {
+
+    override suspend fun parse(cachedFile: CachedFile): List<ReaderText> {
+        Log.i(XML_TAG, "Started XML parsing: ${cachedFile.name}.")
+
+        return try {
+            val readerText = cachedFile.openInputStream()?.use { stream ->
+                documentParser.parseDocument(Jsoup.parse(stream, null, "", Parser.xmlParser()))
+            }
+
+            yield()
+
+            if (
+                readerText.isNullOrEmpty() ||
+                readerText.filterIsInstance<ReaderText.Text>().isEmpty() ||
+                readerText.filterIsInstance<ReaderText.Chapter>().isEmpty()
+            ) {
+                Log.e(XML_TAG, "Could not extract text from XML.")
+                return emptyList()
+            }
+
+            Log.i(XML_TAG, "Successfully finished XML parsing.")
+            readerText
+        } catch (e: Exception) {
+            e.printStackTrace()
+            emptyList()
+        }
+    }
+}
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