Add fpdfppo_embeddertest.cpp.

The lack of coverage of the fpdfppo APIs was noticed while
trying to diagnose another issue.  Adding basic calls to
these APIs then kicked out an assert in XFA, where duplicate
global CFXA_TimeZoneProviders were not expected.  These are
cheap to create except for the global C RTL tzset() call, so
keep track of that and make these on demand.

Review-Url: https://codereview.chromium.org/2488403004

4 files changed, 22 insertions, 43 deletions

diff --git a/xfa/fxfa/parser/xfa_locale.cpp b/xfa/fxfa/parser/xfa_locale.cpp
index 8c106209aa..5b18bcf64b 100644
--- a/xfa/fxfa/parser/xfa_locale.cpp
+++ b/xfa/fxfa/parser/xfa_locale.cpp
@@ -103,8 +103,9 @@ void CXFA_XMLLocale::GetMeridiemName(CFX_WideString& wsMeridiemName,
   wsMeridiemName = GetCalendarSymbol("meridiem", bAM ? 0 : 1, false);
 }
 
-void CXFA_XMLLocale::GetTimeZone(FX_TIMEZONE& tz) const {
-  CXFA_TimeZoneProvider::Get()->GetTimeZone(tz);
+void CXFA_XMLLocale::GetTimeZone(FX_TIMEZONE* tz) const {
+  CXFA_TimeZoneProvider provider;
+  provider.GetTimeZone(tz);
 }
 
 void CXFA_XMLLocale::GetEraName(CFX_WideString& wsEraName, bool bAD) const {
@@ -288,8 +289,9 @@ void CXFA_NodeLocale::GetMeridiemName(CFX_WideString& wsMeridiemName,
       GetCalendarSymbol(XFA_Element::MeridiemNames, bAM ? 0 : 1, false);
 }
 
-void CXFA_NodeLocale::GetTimeZone(FX_TIMEZONE& tz) const {
-  CXFA_TimeZoneProvider::Get()->GetTimeZone(tz);
+void CXFA_NodeLocale::GetTimeZone(FX_TIMEZONE* tz) const {
+  CXFA_TimeZoneProvider provider;
+  provider.GetTimeZone(tz);
 }
 
 void CXFA_NodeLocale::GetEraName(CFX_WideString& wsEraName, bool bAD) const {
diff --git a/xfa/fxfa/parser/xfa_locale.h b/xfa/fxfa/parser/xfa_locale.h
index b9a3259ead..6d03843419 100644
--- a/xfa/fxfa/parser/xfa_locale.h
+++ b/xfa/fxfa/parser/xfa_locale.h
@@ -31,7 +31,7 @@ class CXFA_XMLLocale : public IFX_Locale {
                   bool bAbbr = true) const override;
   void GetMeridiemName(CFX_WideString& wsMeridiemName,
                        bool bAM = true) const override;
-  void GetTimeZone(FX_TIMEZONE& tz) const override;
+  void GetTimeZone(FX_TIMEZONE* tz) const override;
   void GetEraName(CFX_WideString& wsEraName, bool bAD = true) const override;
 
   void GetDatePattern(FX_LOCALEDATETIMESUBCATEGORY eType,
@@ -73,7 +73,7 @@ class CXFA_NodeLocale : public IFX_Locale {
                   bool bAbbr = true) const override;
   void GetMeridiemName(CFX_WideString& wsMeridiemName,
                        bool bAM = true) const override;
-  void GetTimeZone(FX_TIMEZONE& tz) const override;
+  void GetTimeZone(FX_TIMEZONE* tz) const override;
   void GetEraName(CFX_WideString& wsEraName, bool bAD = true) const override;
 
   void GetDatePattern(FX_LOCALEDATETIMESUBCATEGORY eType,
diff --git a/xfa/fxfa/parser/xfa_localemgr.cpp b/xfa/fxfa/parser/xfa_localemgr.cpp
index 74565a7ea0..cfa5801e3c 100644
--- a/xfa/fxfa/parser/xfa_localemgr.cpp
+++ b/xfa/fxfa/parser/xfa_localemgr.cpp
@@ -6,6 +6,8 @@
 
 #include "xfa/fxfa/parser/xfa_localemgr.h"
 
+#include <time.h>
+
 #include <memory>
 #include <utility>
 
@@ -1245,37 +1247,21 @@ CFX_WideStringC CXFA_LocaleMgr::GetConfigLocaleName(CXFA_Node* pConfig) {
   return m_wsConfigLocale.AsStringC();
 }
 
-static CXFA_TimeZoneProvider* g_pProvider = nullptr;
-
-// Static.
-CXFA_TimeZoneProvider* CXFA_TimeZoneProvider::Create() {
-  ASSERT(!g_pProvider);
-  g_pProvider = new CXFA_TimeZoneProvider();
-  return g_pProvider;
-}
-
-// Static.
-CXFA_TimeZoneProvider* CXFA_TimeZoneProvider::Get() {
-  if (!g_pProvider) {
-    g_pProvider = new CXFA_TimeZoneProvider();
-  }
-  return g_pProvider;
-}
-
-// Static.
-void CXFA_TimeZoneProvider::Destroy() {
-  delete g_pProvider;
-  g_pProvider = nullptr;
-}
+static bool g_bProviderTimeZoneSet = false;
 
-#include <time.h>
 CXFA_TimeZoneProvider::CXFA_TimeZoneProvider() {
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
-  _tzset();
+  if (!g_bProviderTimeZoneSet) {
+    g_bProviderTimeZoneSet = true;
+    _tzset();
+  }
   m_tz.tzHour = (int8_t)(_timezone / 3600 * -1);
   m_tz.tzMinute = (int8_t)((FXSYS_abs(_timezone) % 3600) / 60);
 #else
-  tzset();
+  if (!g_bProviderTimeZoneSet) {
+    g_bProviderTimeZoneSet = true;
+    tzset();
+  }
   m_tz.tzHour = (int8_t)(timezone / 3600 * -1);
   m_tz.tzMinute = (int8_t)((FXSYS_abs((int)timezone) % 3600) / 60);
 #endif
@@ -1283,10 +1269,6 @@ CXFA_TimeZoneProvider::CXFA_TimeZoneProvider() {
 
 CXFA_TimeZoneProvider::~CXFA_TimeZoneProvider() {}
 
-void CXFA_TimeZoneProvider::SetTimeZone(FX_TIMEZONE& tz) {
-  m_tz = tz;
-}
-
-void CXFA_TimeZoneProvider::GetTimeZone(FX_TIMEZONE& tz) {
-  tz = m_tz;
+void CXFA_TimeZoneProvider::GetTimeZone(FX_TIMEZONE* tz) const {
+  *tz = m_tz;
 }
diff --git a/xfa/fxfa/parser/xfa_localemgr.h b/xfa/fxfa/parser/xfa_localemgr.h
index 51c6a3b5fb..eb405dcfc7 100644
--- a/xfa/fxfa/parser/xfa_localemgr.h
+++ b/xfa/fxfa/parser/xfa_localemgr.h
@@ -62,12 +62,7 @@ class CXFA_TimeZoneProvider {
   CXFA_TimeZoneProvider();
   ~CXFA_TimeZoneProvider();
 
-  static CXFA_TimeZoneProvider* Create();
-  static CXFA_TimeZoneProvider* Get();
-  static void Destroy();
-
-  void SetTimeZone(FX_TIMEZONE& tz);
-  void GetTimeZone(FX_TIMEZONE& tz);
+  void GetTimeZone(FX_TIMEZONE* tz) const;
 
  private:
   FX_TIMEZONE m_tz;