update

app/src/main/assets/updateLog.md

@@ -3,6 +3,18 @@
 * 关注合作公众号 **[小说拾遗]()** 获取好看的小说。
 - 旧版数据导入教程：先在旧版阅读(2.x)中进行备份，然后在新版阅读(3.x)【我的】->【备份与恢复】，选择【导入旧版本数据】。
 
+**2020/09/29**
+* 增加了几个方法用于处理文件
+```
+//文件下载,content为十六进制字符串,url用于生成文件名，返回文件路径
+downloadFile(content: String, url: String): String
+//文件解压,zipPath为压缩文件路径，返回解压路径
+unzipFile(zipPath: String): String
+//文件夹内所有文件读取
+getTxtInFolder(unzipPath: String): String
+```
+* 增加type字段，返回16进制字符串,栗:`https://www.baidu.com,{"type":"zip"}`
+
 **2020/09/24**
 * 修复规则解析bug
 

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

@@ -43,31 +43,57 @@ interface JsExtensions {
     }
 
     /**
-     * js实现读取压缩文件内的文件内容，并删除压缩文件
+     * js实现文件下载
      */
-    fun getTxtInZip(zipPath: String): String {
-        // 解压路径
+    fun downloadFile(content: String, url: String): String {
+        val zipPath = FileUtils.getPath(
+            FileUtils.createFolderIfNotExist(FileUtils.getCachePath()),
+            "${MD5Utils.md5Encode16(url)}.zip"
+        )
+        FileUtils.deleteFile(zipPath)
+        val zipFile = FileUtils.createFileIfNotExist(zipPath)
+        StringUtils.hexStringToByte(content).let {
+            if (it != null) {
+                zipFile.writeBytes(it)
+            }
+        }
+        return zipPath
+    }
+
+    /**
+     * js实现压缩文件解压
+     */
+    fun unzipFile(zipPath: String): String {
         val unzipPath = FileUtils.getPath(
             FileUtils.createFolderIfNotExist(FileUtils.getCachePath()),
             FileUtils.getNameExcludeExtension(zipPath)
         )
         FileUtils.deleteFile(unzipPath)
-        val unzipFolder = FileUtils.createFolderIfNotExist(unzipPath)
         val zipFile = FileUtils.createFileIfNotExist(zipPath)
+        val unzipFolder = FileUtils.createFolderIfNotExist(unzipPath)
         ZipUtils.unzipFile(zipFile, unzipFolder)
-        val content = StringBuilder()
+        FileUtils.deleteFile(zipPath)
+        return unzipPath
+    }
+
+    /**
+     * js实现文件夹内所有文件读取
+     */
+    fun getTxtInFolder(unzipPath: String): String {
+        val unzipFolder = FileUtils.createFolderIfNotExist(unzipPath)
+        val contents = StringBuilder()
         unzipFolder.listFiles().let {
             if (it != null) {
                 for (f in it) {
                     val charsetName = EncodingDetect.getEncode(f)
-                    content.append(String(f.readBytes(), Charset.forName(charsetName))).append("\n")
+                    contents.append(String(f.readBytes(), Charset.forName(charsetName)))
+                        .append("\n")
                 }
-                content.deleteCharAt(content.length - 1)
+                contents.deleteCharAt(contents.length - 1)
             }
         }
-        FileUtils.deleteFile(zipPath)
         FileUtils.deleteFile(unzipPath)
-        return content.toString()
+        return contents.toString()
     }
 
     /**

app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeUrl.kt

@@ -328,21 +328,8 @@ class AnalyzeUrl(
         jsStr: String? = null,
         sourceRegex: String? = null,
     ): Res {
-        if (type.equals("zip", true)) {
-            val zipPath = FileUtils.getPath(
-                FileUtils.createFolderIfNotExist(FileUtils.getCachePath()),
-                "${MD5Utils.md5Encode16(tag)}.zip"
-            )
-            FileUtils.deleteFile(zipPath)
-            getResponseBytes(tag).let {
-                return if (it != null) {
-                    FileUtils.createFileIfNotExist(zipPath).writeBytes(it)
-                    // 返回压缩文件的下载路径
-                    Res(url, zipPath)
-                } else {
-                    Res(url, "文件下载失败\n${zipPath}")
-                }
-            }
+        if (type != null) {
+            return Res(url, StringUtils.byteToHexString(getResponseBytes(tag)))
         }
         if (useWebView) {
             val params = AjaxWebView.AjaxParams(url)

app/src/main/java/io/legado/app/utils/StringUtils.kt

@@ -45,6 +45,7 @@ object StringUtils {
     //将时间转换成日期
     fun dateConvert(time: Long, pattern: String): String {
         val date = Date(time)
+
         @SuppressLint("SimpleDateFormat")
         val format = SimpleDateFormat(pattern)
         return format.format(date)
@@ -292,4 +293,30 @@ object StringUtils {
         return buf.toString()
     }
 
+    fun byteToHexString(bytes: ByteArray?): String {
+        if (bytes == null) return ""
+        val sb = StringBuilder(bytes.size * 2)
+        for (b in bytes) {
+            val hex = 0xff and b.toInt()
+            if (hex < 16) {
+                sb.append('0')
+            }
+            sb.append(Integer.toHexString(hex)).append(" ")
+        }
+        return sb.toString()
+    }
+
+    fun hexStringToByte(hexString: String): ByteArray? {
+        val hexStr = hexString.replace(" ", "")
+        val len = hexStr.length
+        val bytes = ByteArray(len / 2)
+        var i = 0
+        while (i < len) {
+            // 两位一组，表示一个字节,把这样表示的16进制字符串，还原成一个字节
+            bytes[i / 2] = ((Character.digit(hexString[i], 16) shl 4) +
+                    Character.digit(hexString[i + 1], 16)).toByte()
+            i += 2
+        }
+        return bytes
+    }
 }