up

app/src/main/java/io/legado/app/help/BookHelp.kt

@@ -1,11 +1,35 @@
 package io.legado.app.help
 
+import io.legado.app.App
 import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.BookChapter
+import io.legado.app.utils.getPrefString
+import java.io.BufferedWriter
+import java.io.File
+import java.io.FileWriter
+import java.io.IOException
 
 object BookHelp {
 
+    var downloadPath = App.INSTANCE.getPrefString("downloadPath") ?: App.INSTANCE.getExternalFilesDir(null)
+
     fun saveContent(book: Book, bookChapter: BookChapter, content: String) {
+        if (content.isEmpty()) {
+            return
+        }
+        val filePath = getChapterPath(book, bookChapter)
+        val file = FileHelp.getFile(filePath)
+        //获取流并存储
+        try {
+            BufferedWriter(FileWriter(file)).use { writer ->
+                writer.write(bookChapter.title + "\n\n")
+                writer.write(content)
+                writer.write("\n\n")
+                writer.flush()
+            }
+        } catch (e: IOException) {
+            e.printStackTrace()
+        }
 
     }
 
@@ -21,6 +45,18 @@ object BookHelp {
         return null
     }
 
+    private fun getChapterPath(book: Book, bookChapter: BookChapter): String {
+        val bookFolder = formatFolderName(book.name + book.bookUrl)
+        val chapterFile = String.format("%05d-%s", bookChapter.index, formatFolderName(bookChapter.title))
+        return "$downloadPath${File.separator}book_cache${File.separator}$bookFolder${File.separator}$chapterFile.nb"
+    }
+
+    private fun formatFolderName(folderName: String): String {
+        return folderName.replace("/", "")
+            .replace(":", "")
+            .replace(".", "")
+    }
+
     fun formatAuthor(author: String?): String {
         return author
             ?.replace("作\\s*者[\\s:：]*".toRegex(), "")

app/src/main/java/io/legado/app/help/FileHelp.kt

@@ -0,0 +1,35 @@
+package io.legado.app.help
+
+import java.io.File
+import java.io.IOException
+
+object FileHelp {
+
+
+    //获取文件夹
+    fun getFolder(filePath: String): File {
+        val file = File(filePath)
+        //如果文件夹不存在，就创建它
+        if (!file.exists()) {
+            file.mkdirs()
+        }
+        return file
+    }
+
+    //获取文件
+    @Synchronized
+    fun getFile(filePath: String): File {
+        val file = File(filePath)
+        try {
+            if (!file.exists()) {
+                //创建父类文件夹
+                getFolder(file.parent)
+                //创建文件
+                file.createNewFile()
+            }
+        } catch (e: IOException) {
+        }
+
+        return file
+    }
+}