From 1867487b94ec76ab54d561cab7c504cf10395ec9 Mon Sep 17 00:00:00 2001
From: kunfei <gekunfei@live.com>
Date: Tue, 10 Jan 2023 22:35:02 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 app/src/main/assets/updateLog.md                    |  1 +
 .../main/java/io/legado/app/help/CacheManager.kt    | 13 ++++++++++++-
 .../java/io/legado/app/utils/StringExtensions.kt    |  9 ++++++++-
 3 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/app/src/main/assets/updateLog.md b/app/src/main/assets/updateLog.md
index 5c80229b4..250c4e30a 100644
--- a/app/src/main/assets/updateLog.md
+++ b/app/src/main/assets/updateLog.md
@@ -14,6 +14,7 @@
 **2023/01/10**
 
 * 其他一些有分组的地方也支持独立排序
+* 优化搜索,优化缓存,尝试解决部分书源占用内存过大导致OOM
 * 修复中文AndroidZipFile不能读取非ASCII字符文件名 by ag2s20150909
 * 其它一些优化
 
diff --git a/app/src/main/java/io/legado/app/help/CacheManager.kt b/app/src/main/java/io/legado/app/help/CacheManager.kt
index 90309071b..33073bbb8 100644
--- a/app/src/main/java/io/legado/app/help/CacheManager.kt
+++ b/app/src/main/java/io/legado/app/help/CacheManager.kt
@@ -5,12 +5,23 @@ import io.legado.app.data.appDb
 import io.legado.app.data.entities.Cache
 import io.legado.app.model.analyzeRule.QueryTTF
 import io.legado.app.utils.ACache
+import io.legado.app.utils.memorySize
 
 @Suppress("unused")
 object CacheManager {
 
     private val queryTTFMap = hashMapOf<String, Pair<Long, QueryTTF>>()
-    private val memoryLruCache = object : LruCache<String, String>(100) {}
+
+    /**
+     * 最多只缓存50M的数据,防止OOM
+     */
+    private val memoryLruCache = object : LruCache<String, String>(1024 * 1024 * 50) {
+
+        override fun sizeOf(key: String, value: String): Int {
+            return value.memorySize()
+        }
+
+    }
 
     /**
      * saveTime 单位为秒
diff --git a/app/src/main/java/io/legado/app/utils/StringExtensions.kt b/app/src/main/java/io/legado/app/utils/StringExtensions.kt
index 3780e9ba8..74d7eac7a 100644
--- a/app/src/main/java/io/legado/app/utils/StringExtensions.kt
+++ b/app/src/main/java/io/legado/app/utils/StringExtensions.kt
@@ -6,7 +6,6 @@ import android.icu.text.Collator
 import android.icu.util.ULocale
 import android.net.Uri
 import android.text.Editable
-import cn.hutool.core.lang.Validator
 import io.legado.app.constant.AppPattern.dataUriRegex
 import java.io.File
 import java.util.*
@@ -90,6 +89,14 @@ fun String.cnCompare(other: String): Int {
     }
 }
 
+/**
+ * 字符串所占内存大小
+ */
+fun String?.memorySize(): Int {
+    this ?: return 0
+    return 40 + 2 * length
+}
+
 /**
  * 将字符串拆分为单个字符,包含emoji
  */