From 2af4bdbcf1c71f98fb8e7ad56faa5d7561f6c0cc Mon Sep 17 00:00:00 2001
From: Gauthier Roebroeck <gauthier.roebroeck@gmail.com>
Date: Mon, 30 Sep 2019 11:44:07 +0800
Subject: [PATCH] properly release open files after accessing PDF files (fixes
 #10)

---
 .../infrastructure/archive/PdfExtractor.kt    | 26 +++++++++++--------
 1 file changed, 15 insertions(+), 11 deletions(-)

diff --git a/komga/src/main/kotlin/org/gotson/komga/infrastructure/archive/PdfExtractor.kt b/komga/src/main/kotlin/org/gotson/komga/infrastructure/archive/PdfExtractor.kt
index 80ad2beaa..f39e952eb 100644
--- a/komga/src/main/kotlin/org/gotson/komga/infrastructure/archive/PdfExtractor.kt
+++ b/komga/src/main/kotlin/org/gotson/komga/infrastructure/archive/PdfExtractor.kt
@@ -18,21 +18,25 @@ class PdfExtractor : ArchiveExtractor() {
   private val resolution = 1536F
 
   override fun getPagesList(path: Path): List<BookPage> =
-      PDDocument.load(Files.newInputStream(path)).use { pdf ->
-        (0 until pdf.numberOfPages).map { index ->
-          BookPage(index.toString(), mediaType)
+      Files.newInputStream(path).use { inputStream ->
+        PDDocument.load(inputStream).use { pdf ->
+          (0 until pdf.numberOfPages).map { index ->
+            BookPage(index.toString(), mediaType)
+          }
         }
       }
 
   override fun getPageStream(path: Path, entryName: String): ByteArray =
-      PDDocument.load(Files.newInputStream(path)).use { pdf ->
-        val pageNumber = entryName.toInt()
-        val page = pdf.getPage(pageNumber)
-        val scale = resolution / minOf(page.cropBox.width, page.cropBox.height)
-        val image = PDFRenderer(pdf).renderImage(pageNumber, scale, ImageType.RGB)
-        ByteArrayOutputStream().use { out ->
-          ImageIO.write(image, imageIOFormat, out)
-          out.toByteArray()
+      Files.newInputStream(path).use { inputStream ->
+        PDDocument.load(inputStream).use { pdf ->
+          val pageNumber = entryName.toInt()
+          val page = pdf.getPage(pageNumber)
+          val scale = resolution / minOf(page.cropBox.width, page.cropBox.height)
+          val image = PDFRenderer(pdf).renderImage(pageNumber, scale, ImageType.RGB)
+          ByteArrayOutputStream().use { out ->
+            ImageIO.write(image, imageIOFormat, out)
+            out.toByteArray()
+          }
         }
       }
 }
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