Make CFGAS_StringFormatter::SplitOnBars() static.

Avoid needless creation of some formatter objects.

Change-Id: I28fb8cd115c3a6b5d00043bddf76c60e47c05043
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/51871
Commit-Queue: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>

xfa/fgas/crt/cfgas_stringformatter.cpp

diff --git a/xfa/fgas/crt/cfgas_stringformatter.cpp b/xfa/fgas/crt/cfgas_stringformatter.cpp
index ee8321f..5ce7d12 100644
--- a/xfa/fgas/crt/cfgas_stringformatter.cpp
+++ b/xfa/fgas/crt/cfgas_stringformatter.cpp
@@ -829,6 +829,7 @@
 
 CFGAS_StringFormatter::~CFGAS_StringFormatter() {}
 
+// static
 std::vector<WideString> CFGAS_StringFormatter::SplitOnBars(
     const WideString& wsFormatString) {
   std::vector<WideString> wsPatterns;

xfa/fgas/crt/cfgas_stringformatter.h

diff --git a/xfa/fgas/crt/cfgas_stringformatter.h b/xfa/fgas/crt/cfgas_stringformatter.h
index 9583724..ed18828 100644
--- a/xfa/fgas/crt/cfgas_stringformatter.h
+++ b/xfa/fgas/crt/cfgas_stringformatter.h
@@ -25,7 +25,8 @@
   explicit CFGAS_StringFormatter(LocaleMgrIface* pLocaleMgr);
   ~CFGAS_StringFormatter();
 
-  std::vector<WideString> SplitOnBars(const WideString& wsFormatString);
+  static std::vector<WideString> SplitOnBars(const WideString& wsFormatString);
+
   FX_LOCALECATEGORY GetCategory(const WideString& wsPattern) const;
 
   bool ParseText(const WideString& wsSrcText,

xfa/fgas/crt/cfgas_stringformatter_unittest.cpp

diff --git a/xfa/fgas/crt/cfgas_stringformatter_unittest.cpp b/xfa/fgas/crt/cfgas_stringformatter_unittest.cpp
index c3e7c39..b0acfaf 100644
--- a/xfa/fgas/crt/cfgas_stringformatter_unittest.cpp
+++ b/xfa/fgas/crt/cfgas_stringformatter_unittest.cpp
@@ -288,16 +288,16 @@
 // }
 
 TEST_F(CFGAS_StringFormatterTest, SplitFormatString) {
-  std::vector<WideString> results = fmt(L"en")->SplitOnBars(L"");
+  std::vector<WideString> results = CFGAS_StringFormatter::SplitOnBars(L"");
   EXPECT_EQ(1UL, results.size());
   EXPECT_TRUE(results[0].IsEmpty());
 
-  results = fmt(L"en")->SplitOnBars(L"|");
+  results = CFGAS_StringFormatter::SplitOnBars(L"|");
   EXPECT_EQ(2UL, results.size());
   EXPECT_TRUE(results[0].IsEmpty());
   EXPECT_TRUE(results[1].IsEmpty());
 
-  results = fmt(L"en")->SplitOnBars(
+  results = CFGAS_StringFormatter::SplitOnBars(
       L"null{'No|data'} | null{} | text{999*9999} | text{999*999*9999}");
   EXPECT_EQ(4UL, results.size());
 

xfa/fxfa/parser/cxfa_localevalue.cpp

diff --git a/xfa/fxfa/parser/cxfa_localevalue.cpp b/xfa/fxfa/parser/cxfa_localevalue.cpp
index d9515e7..04f70ec 100644
--- a/xfa/fxfa/parser/cxfa_localevalue.cpp
+++ b/xfa/fxfa/parser/cxfa_localevalue.cpp
@@ -127,11 +127,12 @@
   if (!m_pLocaleMgr)
     return false;
 
+  std::vector<WideString> wsPatterns =
+      CFGAS_StringFormatter::SplitOnBars(wsPattern);
+
   WideString wsOutput;
   ScopedLocale scoped_locale(m_pLocaleMgr.Get(), pLocale);
-
   auto pFormat = pdfium::MakeUnique<CFGAS_StringFormatter>(m_pLocaleMgr.Get());
-  std::vector<WideString> wsPatterns = pFormat->SplitOnBars(wsPattern);
   bool bRet = false;
   size_t i = 0;
   for (; !bRet && i < wsPatterns.size(); i++) {
@@ -261,8 +262,7 @@
                                       LocaleIface* pLocale,
                                       XFA_VALUEPICTURE eValueType) const {
   wsResult.clear();
-  auto pFormat = pdfium::MakeUnique<CFGAS_StringFormatter>(m_pLocaleMgr.Get());
-  for (const auto& pattern : pFormat->SplitOnBars(wsFormat)) {
+  for (const auto& pattern : CFGAS_StringFormatter::SplitOnBars(wsFormat)) {
     if (FormatSinglePattern(wsResult, pattern, pLocale, eValueType))
       return true;
   }
@@ -542,9 +542,11 @@
   if (!m_pLocaleMgr)
     return false;
 
+  std::vector<WideString> wsPatterns =
+      CFGAS_StringFormatter::SplitOnBars(wsPattern);
+
   ScopedLocale scoped_locale(m_pLocaleMgr.Get(), pLocale);
   auto pFormat = pdfium::MakeUnique<CFGAS_StringFormatter>(m_pLocaleMgr.Get());
-  std::vector<WideString> wsPatterns = pFormat->SplitOnBars(wsPattern);
   bool bRet = false;
   for (size_t i = 0; !bRet && i < wsPatterns.size(); i++) {
     const WideString& wsFormat = wsPatterns[i];