fdo#68790: fix build error on Win when system locale=="Japanese(Japan)"

This patch modifies transex3.
Modified transex3 outputs a file with BOM(if MergeMode is true).
*.[hs]rc files with BOM avoid this problem.
This problem is that MSVC interprets UTF-8 source code without BOM as
 local codepage when system locale is "Japanese(Japan)".

Change-Id: I3e12499a91a954236f48e6d7e360d26c93d19ed6
Reviewed-on: https://gerrit.libreoffice.org/5851Tested-by: Markus Mohrhard <markus.mohrhard@googlemail.com>
Tested-by: Kohei Yoshida <libreoffice@kohei.us>
Reviewed-by: Kohei Yoshida <libreoffice@kohei.us>

l10ntools/inc/common.hxx

@@ -28,12 +28,14 @@ struct HandledArgs
     OString m_sMergeSrc;
     OString m_sLanguage;
     bool m_bMergeMode;
+    bool m_bUTF8BOM;
     HandledArgs()
         : m_sInputFile( OString() )
         , m_sOutputFile( OString() )
         , m_sMergeSrc( OString() )
         , m_sLanguage( OString() )
         , m_bMergeMode( false )
+        , m_bUTF8BOM( false )
     {}
 };
 

l10ntools/inc/export.hxx

@@ -226,9 +226,11 @@ private:
 
     void CutComment( OString &rText );
 
+    void WriteUTF8ByteOrderMarkToOutput() { *aOutput.mSimple << '\xEF' << '\xBB' << '\xBF'; }
+
 public:
     Export( const OString &rOutput );
-    Export(const OString &rMergeSource, const OString &rOutput, const OString &rLanguage);
+    Export(const OString &rMergeSource, const OString &rOutput, const OString &rLanguage, bool bUTF8BOM);
     ~Export();
 
     void Init();

l10ntools/source/common.cxx

@@ -43,6 +43,10 @@ bool handleArguments(
         {
             nState = STATE_LANGUAGES;
         }
+        else if ( OString( argv[ i ] ).toAsciiUpperCase() == "-B" )
+        {
+            o_aHandledArgs.m_bUTF8BOM = true;
+        }
         else
         {
             switch ( nState )
@@ -90,12 +94,13 @@ void writeUsage(const OString& rName, const OString& rFileType)
 {
     std::cout
         << " Syntax: " << rName.getStr()
-        << " -i FileIn -o FileOut [-m DataBase] [-l Lang]\n"
+        << " -i FileIn -o FileOut [-m DataBase] [-l Lang] [-b]\n"
         << " FileIn:   Source files (" << rFileType.getStr() << ")\n"
         << " FileOut:  Destination file (*.*)\n"
         << " DataBase: Mergedata (*.po)\n"
         << " Lang: Restrict the handled language; one element of\n"
-        << " (de, en-US, ...) or all\n";
+        << " (de, en-US, ...) or all\n"
+        << " -b:   Add UTF-8 Byte Order Mark to FileOut(use with -m option)\n";
 }
 
 void writePoEntry(

l10ntools/source/export.cxx

@@ -69,8 +69,8 @@ FILE * init(int argc, char ** argv) {
     }
 
     if (aArgs.m_bMergeMode) {
-        global::exporter.reset(
-            new Export(aArgs.m_sMergeSrc, aArgs.m_sOutputFile, aArgs.m_sLanguage));
+        global::exporter.reset(new Export(aArgs.m_sMergeSrc, aArgs.m_sOutputFile,
+                                          aArgs.m_sLanguage, aArgs.m_bUTF8BOM));
     } else {
         global::exporter.reset(new Export(aArgs.m_sOutputFile));
     }
@@ -198,7 +198,7 @@ Export::Export(const OString &rOutput)
 
 Export::Export(
     const OString &rMergeSource, const OString &rOutput,
-    const OString &rLanguage )
+    const OString &rLanguage, bool bUTF8BOM)
                 :
                 bDefine( sal_False ),
                 bNextMustBeDefineEOL( sal_False ),
@@ -218,6 +218,8 @@ Export::Export(
 {
     aOutput.mSimple = new std::ofstream();
     aOutput.mSimple->open(rOutput.getStr(), std::ios_base::out | std::ios_base::trunc);
+
+    if ( bUTF8BOM ) WriteUTF8ByteOrderMarkToOutput();
 }
 
 void Export::Init()

solenv/gbuild/AllLangResTarget.mk

@@ -50,7 +50,8 @@ $(call gb_Helper_abbreviate_dirs,\
 		-i $(3) \
 		-o $(1) \
 		-m $${MERGEINPUT} \
-		-l all) && \
+		-l all \
+		$(if $(filter MSC,$(COM)),$(if $(strip $(gb_WITH_LANG)),-b))) && \
 rm -rf $${MERGEINPUT}
 
 endef