1 files changed, 44 insertions, 0 deletions
diff --git a/xfa/fde/css/cfde_csstagcache.cpp b/xfa/fde/css/cfde_csstagcache.cpp
new file mode 100644
index 0000000000..13e37982df
--- /dev/null
+++ b/xfa/fde/css/cfde_csstagcache.cpp
@@ -0,0 +1,44 @@
+// Copyright 2017 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "xfa/fde/css/cfde_csstagcache.h"
+
+#include <algorithm>
+
+#include "core/fxcrt/fx_ext.h"
+#include "xfa/fxfa/app/cxfa_csstagprovider.h"
+
+CFDE_CSSTagCache::CFDE_CSSTagCache(CFDE_CSSTagCache* parent,
+                                   CXFA_CSSTagProvider* tag)
+    : pTag(tag), pParent(parent), dwIDHash(0), dwTagHash(0), iClassIndex(0) {
+  static const uint32_t s_dwIDHash = FX_HashCode_GetW(L"id", true);
+  static const uint32_t s_dwClassHash = FX_HashCode_GetW(L"class", true);
+  dwTagHash = FX_HashCode_GetW(pTag->GetTagName().AsStringC(), true);
+
+  for (auto it : *pTag) {
+    CFX_WideString wsValue = it.first;
+    CFX_WideString wsName = it.second;
+    uint32_t dwNameHash = FX_HashCode_GetW(wsName.AsStringC(), true);
+    if (dwNameHash == s_dwClassHash) {
+      uint32_t dwHash = FX_HashCode_GetW(wsValue.AsStringC(), false);
+      dwClassHashes.push_back(dwHash);
+    } else if (dwNameHash == s_dwIDHash) {
+      dwIDHash = FX_HashCode_GetW(wsValue.AsStringC(), false);
+    }
+  }
+}
+
+CFDE_CSSTagCache::CFDE_CSSTagCache(const CFDE_CSSTagCache& it)
+    : pTag(it.pTag),
+      pParent(it.pParent),
+      dwIDHash(it.dwIDHash),
+      dwTagHash(it.dwTagHash),
+      iClassIndex(0) {
+  std::copy(it.dwClassHashes.begin(), it.dwClassHashes.end(),
+            dwClassHashes.begin());
+}
+
+CFDE_CSSTagCache::~CFDE_CSSTagCache() {}