osl: unx osl_getNextDirectoryItem() cleanup

I could not easily tell on first reading this function if Directory was
a pointer or not (it is), so changed name to pDirectory). The signature
was too long, so fixed this, whitespacing was inconsistent so small
change there. Also converted to more contentional testing of nullptr.

Change-Id: Ia8b1d33a4a4fbe3e050d63116997ef57a28d73b3
Reviewed-on: https://gerrit.libreoffice.org/39537Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Michael Stahl <mstahl@redhat.com>

sal/osl/unx/file_misc.cxx

@@ -277,21 +277,22 @@ static struct dirent* osl_readdir_impl_(DIR* pdir, bool bFilterLocalAndParentDir
     return pdirent;
 }
 
-oslFileError SAL_CALL osl_getNextDirectoryItem(oslDirectory Directory, oslDirectoryItem* pItem, SAL_UNUSED_PARAMETER sal_uInt32 /*uHint*/)
+oslFileError SAL_CALL osl_getNextDirectoryItem(oslDirectory pDirectory,
+        oslDirectoryItem* pItem, SAL_UNUSED_PARAMETER sal_uInt32 /*uHint*/)
 {
-    oslDirectoryImpl* pDirImpl     = static_cast<oslDirectoryImpl*>(Directory);
-    rtl_uString*      ustrFileName = nullptr;
-    rtl_uString*      ustrFilePath = nullptr;
-    struct dirent*    pEntry;
+    oslDirectoryImpl* pDirImpl = static_cast<oslDirectoryImpl*>(pDirectory);
+    rtl_uString* ustrFileName = nullptr;
+    rtl_uString* ustrFilePath = nullptr;
+    struct dirent* pEntry;
 
-    OSL_ASSERT(Directory);
+    OSL_ASSERT(pDirectory);
     OSL_ASSERT(pItem);
 
-    if ((Directory == nullptr) || (pItem == nullptr))
+    if ((pDirectory == nullptr) || (pItem == nullptr))
         return osl_File_E_INVAL;
 
 #ifdef ANDROID
-    if( pDirImpl->eKind == oslDirectoryImpl::KIND_ASSETS )
+    if(pDirImpl->eKind == oslDirectoryImpl::KIND_ASSETS)
     {
         pEntry = lo_apk_readdir(pDirImpl->pApkDirStruct);
     }
@@ -301,34 +302,34 @@ oslFileError SAL_CALL osl_getNextDirectoryItem(oslDirectory Directory, oslDirect
         pEntry = osl_readdir_impl_(pDirImpl->pDirStruct, true);
     }
 
-    if (pEntry == nullptr)
+    if (!pEntry)
         return osl_File_E_NOENT;
 
 #if defined(MACOSX)
 
     // convert decomposed filename to precomposed unicode
     char composed_name[BUFSIZ];
-    CFMutableStringRef strRef = CFStringCreateMutable (nullptr, 0 );
-    CFStringAppendCString( strRef, pEntry->d_name, kCFStringEncodingUTF8 );  //UTF8 is default on Mac OSX
-    CFStringNormalize( strRef, kCFStringNormalizationFormC );
-    CFStringGetCString( strRef, composed_name, BUFSIZ, kCFStringEncodingUTF8 );
-    CFRelease( strRef );
-    rtl_string2UString( &ustrFileName, composed_name, strlen( composed_name),
-    osl_getThreadTextEncoding(), OSTRING_TO_OUSTRING_CVTFLAGS );
+    CFMutableStringRef strRef = CFStringCreateMutable(nullptr, 0 );
+    CFStringAppendCString(strRef, pEntry->d_name, kCFStringEncodingUTF8);  // UTF8 is default on Mac OSX
+    CFStringNormalize(strRef, kCFStringNormalizationFormC);
+    CFStringGetCString(strRef, composed_name, BUFSIZ, kCFStringEncodingUTF8);
+    CFRelease(strRef);
+    rtl_string2UString(&ustrFileName, composed_name, strlen(composed_name),
+                       osl_getThreadTextEncoding(), OSTRING_TO_OUSTRING_CVTFLAGS);
 
 #else  // not MACOSX
     /* convert file name to unicode */
-    rtl_string2UString( &ustrFileName, pEntry->d_name, strlen( pEntry->d_name ),
-        osl_getThreadTextEncoding(), OSTRING_TO_OUSTRING_CVTFLAGS );
-    OSL_ASSERT(ustrFileName != nullptr);
+    rtl_string2UString(&ustrFileName, pEntry->d_name, strlen(pEntry->d_name),
+                       osl_getThreadTextEncoding(), OSTRING_TO_OUSTRING_CVTFLAGS);
+    OSL_ASSERT(ustrFileName);
 
 #endif
 
     osl_systemPathMakeAbsolutePath(pDirImpl->ustrPath, ustrFileName, &ustrFilePath);
-    rtl_uString_release( ustrFileName );
+    rtl_uString_release(ustrFileName);
 
-    DirectoryItem_Impl * pImpl = static_cast< DirectoryItem_Impl* >(*pItem);
-    if (pImpl != nullptr)
+    DirectoryItem_Impl* pImpl = static_cast< DirectoryItem_Impl* >(*pItem);
+    if (pImpl)
     {
         pImpl->release();
         pImpl = nullptr;
@@ -339,7 +340,7 @@ oslFileError SAL_CALL osl_getNextDirectoryItem(oslDirectory Directory, oslDirect
     pImpl = new DirectoryItem_Impl(ustrFilePath);
 #endif /* _DIRENT_HAVE_D_TYPE */
     *pItem = pImpl;
-    rtl_uString_release( ustrFilePath );
+    rtl_uString_release(ustrFilePath);
 
     return osl_File_E_None;
 }