diff --git a/module/repo/control.php b/module/repo/control.php
index 3ceebe6e5d..b4eb47db02 100644
--- a/module/repo/control.php
+++ b/module/repo/control.php
@@ -369,7 +369,7 @@ class repo extends control
         }
 
         $this->commonAction($repoID, $objectID);
-        $this->repo->setBackSession('view', true);
+        $this->repoZen->setBackSession('view', true);
         $this->session->set('storyList', inlink('view',  "repoID=$repoID&objectID=$objectID&entry=$entry&revision=$revision&showBug=$showBug&encoding=$encoding"), 'product');
 
         return print($this->fetch('repo', 'monaco', "repoID=$repoID&objectID=$objectID&entry=$entry&revision=$revision&showBug=$showBug&encoding=$encoding"));
@@ -484,7 +484,7 @@ class repo extends control
     public function log(int $repoID = 0, int $objectID = 0, string $entry = '', string $revision = 'HEAD', string $type = 'dir', int $recTotal = 0, int $recPerPage = 50, int $pageID = 1)
     {
         if($this->get->repoPath) $entry = $this->get->repoPath;
-        $this->repo->setBackSession('log', true);
+        $this->repoZen->setBackSession('log', true);
         if($repoID == 0) $repoID = $this->session->repoID;
 
         $repo  = $this->repo->getByID($repoID);
@@ -1078,7 +1078,7 @@ class repo extends control
 
         $suffix   = '';
         if(isset($pathInfo["extension"])) $suffix = strtolower($pathInfo["extension"]);
-        if(!$suffix or (!array_key_exists($suffix, $this->config->program->suffix) and strpos($this->config->repo->images, "|$suffix|") === false)) $suffix = $this->repo->isBinary($content, $suffix) ? 'binary' : 'c';
+        if(!$suffix or (!array_key_exists($suffix, $this->config->program->suffix) and strpos($this->config->repo->images, "|$suffix|") === false)) $suffix = $this->repoZen->isBinary($content, $suffix) ? 'binary' : 'c';
 
         if(strpos($this->config->repo->images, "|$suffix|") !== false)
         {
@@ -1166,7 +1166,7 @@ class repo extends control
 
         $this->scm->setEngine($repo);
 
-        $this->repo->setRepoBranch($branch);
+        $this->repoZen->setRepoBranch($branch);
         helper::setcookie("syncBranch", $branch);
 
         $latestInDB = $this->dao->select('t1.*')->from(TABLE_REPOHISTORY)->alias('t1')
diff --git a/module/repo/model.php b/module/repo/model.php
index b65dfb4d59..d3a2f19519 100644
--- a/module/repo/model.php
+++ b/module/repo/model.php
@@ -1229,26 +1229,29 @@ class repoModel extends model
     }
 
     /**
+     * 更新代码库的提交次数。
      * Update commit count.
      *
      * @param  int    $repoID
      * @param  int    $count
      * @access public
-     * @return void
+     * @return bool
      */
-    public function updateCommitCount($repoID, $count)
+    public function updateCommitCount(int $repoID, int $count): bool
     {
-        return $this->dao->update(TABLE_REPO)->set('commits')->eq($count)->where('id')->eq($repoID)->exec();
+        $this->dao->update(TABLE_REPO)->set('commits')->eq($count)->where('id')->eq($repoID)->exec();
+        return !dao::isError();
     }
 
     /**
-     * Get unsync commits
+     * 获取未同步的提交。
+     * Get unsync commits.
      *
      * @param  object $repo
      * @access public
      * @return array
      */
-    public function getUnsyncedCommits($repo)
+    public function getUnsyncedCommits(object $repo): array
     {
         $repoID   = $repo->id;
         $lastInDB = $this->getLatestCommit($repoID);
@@ -1282,89 +1285,18 @@ class repoModel extends model
     }
 
     /**
-     * Get pre and next revision.
-     *
-     * @param  object $repo
-     * @param  string $entry
-     * @param  string $revision
-     * @param  string $fileType
-     * @param  string $method
-     *
-     * @access public
-     * @return object
-     */
-    public function getPreAndNext($repo, $entry, $revision = 'HEAD', $fileType = 'dir', $method = 'view')
-    {
-        $entry  = ltrim($entry, '/');
-        $entry  = $repo->prefix . '/' . $entry;
-        $repoID = $repo->id;
-
-        if($method == 'view')
-        {
-            $revisions = $this->dao->select('DISTINCT t1.revision,t1.commit')->from(TABLE_REPOHISTORY)->alias('t1')
-                ->leftJoin(TABLE_REPOFILES)->alias('t2')->on('t1.id=t2.revision')
-                ->leftJoin(TABLE_REPOBRANCH)->alias('t3')->on('t1.id=t3.revision')
-                ->where('t1.repo')->eq($repoID)
-                ->beginIF($this->cookie->repoBranch)->andWhere('t3.branch')->eq($this->cookie->repoBranch)->fi()
-                ->andWhere('t2.path')->eq("$entry")
-                ->orderBy('commit desc')
-                ->fetchPairs();
-        }
-        else
-        {
-            $revisions = $this->dao->select('DISTINCT t1.revision,t1.commit')->from(TABLE_REPOHISTORY)->alias('t1')
-                ->leftJoin(TABLE_REPOFILES)->alias('t2')->on('t1.id=t2.revision')
-                ->leftJoin(TABLE_REPOBRANCH)->alias('t3')->on('t1.id=t3.revision')
-                ->where('t1.repo')->eq($repoID)
-                ->beginIF($this->cookie->repoBranch)->andWhere('t3.branch')->eq($this->cookie->repoBranch)->fi()
-                ->beginIF($entry == '/')->andWhere('t2.revision = t1.id')->fi()
-                ->beginIF($fileType == 'dir' && $entry != '/')
-                ->andWhere('t2.parent', true)->like(rtrim($entry, '/') . "/%")
-                ->orWhere('t2.parent')->eq(rtrim($entry, '/'))
-                ->markRight(1)
-                ->fi()
-                ->beginIF($fileType == 'file' && $entry != '/')->andWhere('t2.path')->eq($entry)->fi()
-                ->orderBy('commit desc')
-                ->fetchPairs();
-        }
-
-        $preRevision  = false;
-        $preAndNext   = new stdclass();
-        $preAndNext->pre  = '';
-        $preAndNext->next = '';
-        foreach($revisions as $version => $commit)
-        {
-            /* Get next object. */
-            if($preRevision === true)
-            {
-                $preAndNext->next = $version;
-                break;
-            }
-
-            /* Get pre object. */
-            if($revision == $version)
-            {
-                if($preRevision) $preAndNext->pre = $preRevision;
-                $preRevision = true;
-            }
-            if($preRevision !== true) $preRevision = $version;
-        }
-        return $preAndNext;
-    }
-
-    /**
-     * Create link for repo
+     * 生成链接。
+     * Create link for repo.
      *
      * @param  string $method
      * @param  string $params
      * @param  string $viewType
-     * @param  bool   $onlybody
      * @access public
      * @return string
      */
-    public function createLink($method, $params = '', $viewType = '', $onlybody = false)
+    public function createLink(string $method, string $params = '', string $viewType = '')
     {
-        if($this->config->requestType == 'GET') return helper::createLink('repo', $method, $params, $viewType, $onlybody);
+        if($this->config->requestType == 'GET') return helper::createLink('repo', $method, $params, $viewType);
 
         $parsedParams = array();
         parse_str($params, $parsedParams);
@@ -1381,7 +1313,7 @@ class repoModel extends model
         }
 
         $params = http_build_query($parsedParams);
-        $link   = helper::createLink('repo', $method, $params, $viewType, $onlybody);
+        $link   = helper::createLink('repo', $method, $params, $viewType);
         if(empty($pathParams)) return $link;
 
         $link .= strpos($link, '?') === false ? '?' : '&';
@@ -1390,128 +1322,77 @@ class repoModel extends model
     }
 
     /**
-     * Set back session/
-     *
-     * @param  string $type
-     * @param  bool   $withOtherModule
-     * @access public
-     * @return void
-     */
-    public function setBackSession($type = 'list', $withOtherModule = false)
-    {
-        session_start();
-        $uri = $this->app->getURI(true);
-        if(!empty($_GET) and $this->config->requestType == 'PATH_INFO') $uri .= (strpos($uri, '?') === false ? '?' : '&') . http_build_query($_GET);
-
-        $backKey = 'repo' . ucfirst(strtolower($type));
-        $this->session->set($backKey, $uri);
-
-        if($type == 'list') unset($_SESSION['repoView']);
-        if($withOtherModule)
-        {
-            $this->session->set('bugList', $uri, 'qa');
-            $this->session->set('taskList', $uri, 'execution');
-        }
-        session_write_close();
-    }
-
-    /**
-     * Set repo branch.
-     *
-     * @param  string $branch
-     * @access public
-     * @return void
-     */
-    public function setRepoBranch($branch)
-    {
-        helper::setcookie("repoBranch", $branch, 0, $this->config->webRoot, '', $this->config->cookieSecure, false);
-        $_COOKIE['repoBranch'] = $branch;
-    }
-
-    /**
+     * 更新代码库的同步状态。
      * Mark synced status.
      *
      * @param  int    $repoID
      * @access public
-     * @return void
+     * @return bool
      */
-    public function markSynced($repoID)
+    public function markSynced(int $repoID): bool
     {
         $this->fixCommit($repoID);
         $this->dao->update(TABLE_REPO)->set('synced')->eq(1)->where('id')->eq($repoID)->exec();
+        return !dao::isError();
     }
 
     /**
+     * 更新提交记录的排序。
      * Fix commit.
      *
      * @param  int    $repoID
      * @access public
-     * @return void
+     * @return bool
      */
-    public function fixCommit($repoID)
+    public function fixCommit(int $repoID): bool
     {
-        $stmt = $this->dao->select('DISTINCT t1.id,t1.`time`')->from(TABLE_REPOHISTORY)->alias('t1')
+        $historyList = $this->dao->select('DISTINCT t1.id,t1.`time`')->from(TABLE_REPOHISTORY)->alias('t1')
             ->leftJoin(TABLE_REPOBRANCH)->alias('t2')->on('t1.id=t2.revision')
             ->where('t1.repo')->eq($repoID)
             ->beginIF($this->cookie->repoBranch)->andWhere('t2.branch')->eq($this->cookie->repoBranch)->fi()
             ->orderBy('time')
             ->query();
 
-        $i = 1;
-        while($repoHistory = $stmt->fetch())
+        foreach($historyList as $i => $repoHistory)
         {
-            $this->dao->update(TABLE_REPOHISTORY)->set('`commit`')->eq($i)->where('id')->eq($repoHistory->id)->exec();
             $i++;
+
+            $this->dao->update(TABLE_REPOHISTORY)->set('`commit`')->eq($i)->where('id')->eq($repoHistory->id)->exec();
         }
+
+        return !dao::isError();
     }
 
     /**
+     * 转义代码库文件路径。
      * Encode repo path.
      *
      * @param  string $path
      * @access public
      * @return string
      */
-    public function encodePath($path = '')
+    public function encodePath(string $path = ''): string
     {
         if(empty($path)) return $path;
         return helper::safe64Encode(urlencode($path));
     }
 
     /**
+     * 解析代码库文件路径。
      * Decode repo path.
      *
      * @param  string $path
      * @access public
      * @return string
      */
-    public function decodePath($path = '')
+    public function decodePath(string $path = ''): string
     {
         if(empty($path)) return $path;
         return trim(urldecode(helper::safe64Decode($path)), '/');
     }
 
     /**
-     * Check content is binary.
-     *
-     * @param  string $content
-     * @param  string $suffix
-     * @access public
-     * @return bool
-     */
-    public function isBinary($content, $suffix = '')
-    {
-        if(strpos($this->config->repo->binary, "|$suffix|") !== false) return true;
-
-        $blk = substr($content, 0, 512);
-        return (
-            substr_count($blk, "^\r\n")/512 > 0.3 ||
-            substr_count($blk, "^ -~")/512 > 0.3 ||
-            substr_count($blk, "\x00") > 0
-        );
-    }
-
-    /**
+     * 删除客户端代码工具生成的版本文件。
      * remove client version file.
      *
      * @access public
diff --git a/module/repo/test/model/getpreandnext.php b/module/repo/test/model/getpreandnext.php
deleted file mode 100644
index 141ba1e1ac..0000000000
--- a/module/repo/test/model/getpreandnext.php
+++ /dev/null
@@ -1,17 +0,0 @@
-#!/usr/bin/env php
-<?php
-include dirname(__FILE__, 5) . '/test/lib/init.php';
-include dirname(__FILE__, 2) . '/repo.class.php';
-su('admin');
-
-/**
-
-title=测试 repoModel->getPreAndNext();
-cid=1
-pid=1
-
-*/
-
-$repo = new repoTest();
-
-r($repo->getPreAndNextTest()) && p() && e();
\ No newline at end of file
diff --git a/module/repo/test/model/isbinary.php b/module/repo/test/model/isbinary.php
deleted file mode 100644
index 5d0d05504e..0000000000
--- a/module/repo/test/model/isbinary.php
+++ /dev/null
@@ -1,17 +0,0 @@
-#!/usr/bin/env php
-<?php
-include dirname(__FILE__, 5) . '/test/lib/init.php';
-include dirname(__FILE__, 2) . '/repo.class.php';
-su('admin');
-
-/**
-
-title=测试 repoModel->isBinary();
-cid=1
-pid=1
-
-*/
-
-$repo = new repoTest();
-
-r($repo->isBinaryTest()) && p() && e();
\ No newline at end of file
diff --git a/module/repo/test/model/setbacksession.php b/module/repo/test/model/setbacksession.php
deleted file mode 100644
index 37f5613ca8..0000000000
--- a/module/repo/test/model/setbacksession.php
+++ /dev/null
@@ -1,17 +0,0 @@
-#!/usr/bin/env php
-<?php
-include dirname(__FILE__, 5) . '/test/lib/init.php';
-include dirname(__FILE__, 2) . '/repo.class.php';
-su('admin');
-
-/**
-
-title=测试 repoModel->setBackSession();
-cid=1
-pid=1
-
-*/
-
-$repo = new repoTest();
-
-r($repo->setBackSessionTest()) && p() && e();
\ No newline at end of file
diff --git a/module/repo/test/model/setrepobranch.php b/module/repo/test/model/setrepobranch.php
deleted file mode 100644
index 2ae21dce9e..0000000000
--- a/module/repo/test/model/setrepobranch.php
+++ /dev/null
@@ -1,17 +0,0 @@
-#!/usr/bin/env php
-<?php
-include dirname(__FILE__, 5) . '/test/lib/init.php';
-include dirname(__FILE__, 2) . '/repo.class.php';
-su('admin');
-
-/**
-
-title=测试 repoModel->setRepoBranch();
-cid=1
-pid=1
-
-*/
-
-$repo = new repoTest();
-
-r($repo->setRepoBranchTest()) && p() && e();
\ No newline at end of file
diff --git a/module/repo/test/repo.class.php b/module/repo/test/repo.class.php
index 779217fbef..eda97b6899 100644
--- a/module/repo/test/repo.class.php
+++ b/module/repo/test/repo.class.php
@@ -297,15 +297,6 @@ class repoTest
         return $objects;
     }
 
-    public function getPreAndNextTest($repo, $entry, $revision = 'HEAD', $fileType = 'dir', $method = 'view')
-    {
-        $objects = $this->objectModel->getPreAndNext($repo, $entry, $revision, $fileType, $method);
-
-        if(dao::isError()) return dao::getError();
-
-        return $objects;
-    }
-
     public function createLinkTest($method, $params = '', $viewType = '', $onlybody = false)
     {
         $objects = $this->objectModel->createLink($method, $params, $viewType, $onlybody);
@@ -315,24 +306,6 @@ class repoTest
         return $objects;
     }
 
-    public function setBackSessionTest($type = 'list', $withOtherModule = false)
-    {
-        $objects = $this->objectModel->setBackSession($type, $withOtherModule);
-
-        if(dao::isError()) return dao::getError();
-
-        return $objects;
-    }
-
-    public function setRepoBranchTest($branch)
-    {
-        $objects = $this->objectModel->setRepoBranch($branch);
-
-        if(dao::isError()) return dao::getError();
-
-        return $objects;
-    }
-
     public function markSyncedTest($repoID)
     {
         $objects = $this->objectModel->markSynced($repoID);
@@ -369,15 +342,6 @@ class repoTest
         return $objects;
     }
 
-    public function isBinaryTest($content, $suffix = '')
-    {
-        $objects = $this->objectModel->isBinary($content, $suffix);
-
-        if(dao::isError()) return dao::getError();
-
-        return $objects;
-    }
-
     public function checkClientTest()
     {
         $objects = $this->objectModel->checkClient();
diff --git a/module/repo/zen.php b/module/repo/zen.php
index a258d24008..de70ebf1b2 100644
--- a/module/repo/zen.php
+++ b/module/repo/zen.php
@@ -854,13 +854,13 @@ class repoZen extends repo
 
             if(empty($branchID) and $this->cookie->repoBranch && $this->session->repoID == $repo->id) $branchID = $this->cookie->repoBranch;
             if(!isset($branches[$branchID]) && !isset($tags[$branchID])) $branchID = (string)key($branches);
-            if($branchID) $this->repo->setRepoBranch($branchID);
+            if($branchID) $this->setRepoBranch($branchID);
 
             return array($branchID, $branches, $tags);
         }
         else
         {
-            $this->repo->setRepoBranch('');
+            $this->setRepoBranch('');
             return array('', array(), array());
         }
     }
@@ -900,7 +900,7 @@ class repoZen extends repo
      */
     protected function setBrowseSession(): void
     {
-        $this->repo->setBackSession('list', true);
+        $this->setBackSession('list', true);
 
         session_start();
         $this->session->set('revisionList', $this->app->getURI(true));
@@ -1386,7 +1386,7 @@ class repoZen extends repo
                     }
                 }
 
-                $this->repo->setRepoBranch($branchID);
+                $this->setRepoBranch($branchID);
                 helper::setcookie("syncBranch", $branchID, 0, $this->config->webRoot, '', $this->config->cookieSecure, true);
             }
         }
@@ -1427,4 +1427,66 @@ class repoZen extends repo
         $this->dao->update(TABLE_REPO)->set('commits=commits + ' . $commitCount)->where('id')->eq($repo->id)->exec();
         return $type == 'batch' ?  $commitCount : $this->config->repo->repoSyncLog->finish;
     }
+
+    /**
+     * 设置返回链接。
+     * Set back session.
+     *
+     * @param  string $type
+     * @param  bool   $withOtherModule
+     * @access public
+     * @return void
+     */
+    public function setBackSession(string $type = 'list', bool $withOtherModule = false)
+    {
+        session_start();
+        $uri = $this->app->getURI(true);
+        if(!empty($_GET) and $this->config->requestType == 'PATH_INFO') $uri .= (strpos($uri, '?') === false ? '?' : '&') . http_build_query($_GET);
+
+        $backKey = 'repo' . ucfirst(strtolower($type));
+        $this->session->set($backKey, $uri);
+
+        if($type == 'list') unset($_SESSION['repoView']);
+        if($withOtherModule)
+        {
+            $this->session->set('bugList', $uri, 'qa');
+            $this->session->set('taskList', $uri, 'execution');
+        }
+        session_write_close();
+    }
+
+    /**
+     * 设置代码库分支。
+     * Set repo branch.
+     *
+     * @param  string $branch
+     * @access public
+     * @return void
+     */
+    public function setRepoBranch(string $branch)
+    {
+        helper::setcookie("repoBranch", $branch, 0, $this->config->webRoot, '', $this->config->cookieSecure, false);
+        $_COOKIE['repoBranch'] = $branch;
+    }
+
+    /**
+     * 检查是否是二进制文件。
+     * Check content is binary.
+     *
+     * @param  string $content
+     * @param  string $suffix
+     * @access public
+     * @return bool
+     */
+    public function isBinary(string $content, string $suffix = ''): bool
+    {
+        if(strpos($this->config->repo->binary, "|$suffix|") !== false) return true;
+
+        $blk = substr($content, 0, 512);
+        return (
+            substr_count($blk, "^\r\n")/512 > 0.3 ||
+            substr_count($blk, "^ -~")/512 > 0.3 ||
+            substr_count($blk, "\x00") > 0
+        );
+    }
 }