From 09d33bcd82a82cb55039d41651df13e17d6c3e59 Mon Sep 17 00:00:00 2001
From: Tom Sepez <tsepez@chromium.org>
Date: Wed, 19 Aug 2015 09:49:24 -0700
Subject: Merge to XFA: CFX_MapByteStringToPtr considered harmful (combo
 patch).

New manual edits: two unused members deleted, one adapted.
    fde_csscache.cpp
    fde_csscache.h
    fpdfxfa_doc.h
    fx_ge_fontmap.cpp

(cherry picked from commit 1d9dbd53b205b2b4d9e75a7eeb95e80837917ea3)
(cherry picked from commit cb4d0ea68308e3c51a6ba9551b393bb2f639afc4)
(cherry picked from commit 9cf44c2ed09a8b2ff243eb6dbb72a8cceae1b5ff)
(cherry picked from commit 2a2a6aa7f51352fc481e78f6ad9d41f2738bcc48)
(cherry picked from commit ce4ffb8183af3fa2bb5133f0f7370a88e064c516)
Original Review URL: https://codereview.chromium.org/1297723002 .

R=thestig@chromium.org

Review URL: https://codereview.chromium.org/1301793002 .
---
 xfa/src/fdp/src/css/fde_csscache.cpp | 75 +++++++++++++++---------------------
 xfa/src/fdp/src/css/fde_csscache.h   |  2 +-
 2 files changed, 32 insertions(+), 45 deletions(-)

(limited to 'xfa/src/fdp')

diff --git a/xfa/src/fdp/src/css/fde_csscache.cpp b/xfa/src/fdp/src/css/fde_csscache.cpp
index 8c5668047f..b04758649f 100644
--- a/xfa/src/fdp/src/css/fde_csscache.cpp
+++ b/xfa/src/fdp/src/css/fde_csscache.cpp
@@ -17,21 +17,16 @@ _FDE_CSSCACHEITEM::~_FDE_CSSCACHEITEM() {
 IFDE_CSSStyleSheetCache* IFDE_CSSStyleSheetCache::Create() {
   return new CFDE_CSSStyleSheetCache;
 }
+
 CFDE_CSSStyleSheetCache::CFDE_CSSStyleSheetCache()
     : m_pFixedStore(NULL), m_iMaxItems(5) {}
+
 CFDE_CSSStyleSheetCache::~CFDE_CSSStyleSheetCache() {
-  FX_POSITION pos = m_Stylesheets.GetStartPosition();
-  if (pos != NULL) {
-    CFX_ByteString szKey;
-    void* pValue;
-    while (pos != NULL) {
-      m_Stylesheets.GetNextAssoc(pos, szKey, pValue);
-      FDE_DeleteWith(FDE_CSSCACHEITEM, m_pFixedStore,
-                     (FDE_LPCSSCACHEITEM)pValue);
-    }
-    m_Stylesheets.RemoveAll();
+  for (const auto& pair : m_Stylesheets) {
+    FDE_DeleteWith(FDE_CSSCACHEITEM, m_pFixedStore, pair.second);
   }
-  if (m_pFixedStore != NULL) {
+  m_Stylesheets.clear();
+  if (m_pFixedStore) {
     m_pFixedStore->Release();
   }
 }
@@ -43,9 +38,9 @@ void CFDE_CSSStyleSheetCache::AddStyleSheet(const CFX_ByteStringC& szKey,
         FX_ALLOCTYPE_Fixed, FX_MAX(10, m_iMaxItems), sizeof(FDE_CSSCACHEITEM));
     FXSYS_assert(m_pFixedStore != NULL);
   }
-  void* pValue = NULL;
-  if (m_Stylesheets.Lookup(szKey, pValue)) {
-    FDE_LPCSSCACHEITEM pItem = (FDE_LPCSSCACHEITEM)pValue;
+  auto it = m_Stylesheets.find(szKey);
+  if (it != m_Stylesheets.end()) {
+    FDE_LPCSSCACHEITEM pItem = it->second;
     if (pItem->pStylesheet != pStyleSheet) {
       pItem->pStylesheet->Release();
       pItem->pStylesheet = pStyleSheet;
@@ -53,56 +48,48 @@ void CFDE_CSSStyleSheetCache::AddStyleSheet(const CFX_ByteStringC& szKey,
       pItem->dwActivity = 0;
     }
   } else {
-    while (m_Stylesheets.GetCount() >= m_iMaxItems) {
+    while (static_cast<int32_t>(m_Stylesheets.size()) >= m_iMaxItems) {
       RemoveLowestActivityItem();
     }
-    FDE_LPCSSCACHEITEM pItem =
+    m_Stylesheets[szKey] =
         FDE_NewWith(m_pFixedStore) FDE_CSSCACHEITEM(pStyleSheet);
-    FXSYS_assert(pItem != NULL);
-    m_Stylesheets.SetAt(szKey, pItem);
   }
 }
 IFDE_CSSStyleSheet* CFDE_CSSStyleSheetCache::GetStyleSheet(
     const CFX_ByteStringC& szKey) const {
-  void* pValue = NULL;
-  if (m_Stylesheets.Lookup(szKey, pValue)) {
-    FDE_LPCSSCACHEITEM pItem = (FDE_LPCSSCACHEITEM)pValue;
-    pItem->dwActivity++;
-    pItem->pStylesheet->AddRef();
-    return pItem->pStylesheet;
+  auto it = m_Stylesheets.find(szKey);
+  if (it == m_Stylesheets.end()) {
+    return nullptr;
   }
-  return NULL;
+  FDE_LPCSSCACHEITEM pItem = it->second;
+  pItem->dwActivity++;
+  pItem->pStylesheet->AddRef();
+  return pItem->pStylesheet;
 }
 void CFDE_CSSStyleSheetCache::RemoveStyleSheet(const CFX_ByteStringC& szKey) {
-  void* pValue = NULL;
-  if (!m_Stylesheets.Lookup(szKey, pValue)) {
+  auto it = m_Stylesheets.find(szKey);
+  if (it == m_Stylesheets.end()) {
     return;
   }
-  FDE_DeleteWith(FDE_CSSCACHEITEM, m_pFixedStore, (FDE_LPCSSCACHEITEM)pValue);
-  m_Stylesheets.RemoveKey(szKey);
+  FDE_DeleteWith(FDE_CSSCACHEITEM, m_pFixedStore, it->second);
+  m_Stylesheets.erase(it);
 }
 void CFDE_CSSStyleSheetCache::RemoveLowestActivityItem() {
-  FX_POSITION pos = m_Stylesheets.GetStartPosition();
-  CFX_ByteString szKey;
-  void* pValue;
-  FDE_LPCSSCACHEITEM pItem = NULL;
-  CFX_ByteString szItem;
-  while (pos != NULL) {
-    m_Stylesheets.GetNextAssoc(pos, szKey, pValue);
-    switch (szKey.GetID()) {
+  auto found = m_Stylesheets.end();
+  for (auto it = m_Stylesheets.begin(); it != m_Stylesheets.end(); ++it) {
+    switch (it->first.GetID()) {
       case FXBSTR_ID('#', 'U', 'S', 'E'):
       case FXBSTR_ID('#', 'A', 'G', 'E'):
         continue;
     }
-    FDE_LPCSSCACHEITEM p = (FDE_LPCSSCACHEITEM)pValue;
-    if (pItem == NULL || pItem->dwActivity > p->dwActivity) {
-      szItem = szKey;
-      pItem = p;
+    if (found == m_Stylesheets.end() ||
+        it->second->dwActivity > found->second->dwActivity) {
+      found = it;
     }
   }
-  if (pItem != NULL) {
-    FDE_DeleteWith(FDE_CSSCACHEITEM, m_pFixedStore, pItem);
-    m_Stylesheets.RemoveKey(szItem);
+  if (found != m_Stylesheets.end()) {
+    FDE_DeleteWith(FDE_CSSCACHEITEM, m_pFixedStore, found->second);
+    m_Stylesheets.erase(found);
   }
 }
 _FDE_CSSTAGCACHE::_FDE_CSSTAGCACHE(_FDE_CSSTAGCACHE* parent,
diff --git a/xfa/src/fdp/src/css/fde_csscache.h b/xfa/src/fdp/src/css/fde_csscache.h
index a5b85b7690..fd113a2159 100644
--- a/xfa/src/fdp/src/css/fde_csscache.h
+++ b/xfa/src/fdp/src/css/fde_csscache.h
@@ -32,7 +32,7 @@ class CFDE_CSSStyleSheetCache : public IFDE_CSSStyleSheetCache,
 
  protected:
   void RemoveLowestActivityItem();
-  CFX_MapByteStringToPtr m_Stylesheets;
+  std::map<CFX_ByteString, FDE_LPCSSCACHEITEM> m_Stylesheets;
   IFX_MEMAllocator* m_pFixedStore;
   int32_t m_iMaxItems;
 };
-- 
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