ossim::StreamFactory Class Reference

#include <ossimStreamFactory.h>

Inheritance diagram for ossim::StreamFactory:

Public Member Functions
virtual	~StreamFactory ()
virtual std::shared_ptr< ossim::istream >	createIstream (const std::string &connectionString, const ossimKeywordlist &options=ossimKeywordlist(), std::ios_base::openmode mode=std::ios_base::in|std::ios_base::binary) const
virtual std::shared_ptr< ossim::ostream >	createOstream (const std::string &connectionString, const ossimKeywordlist &options=ossimKeywordlist(), std::ios_base::openmode mode=std::ios_base::out|std::ios_base::binary) const
virtual std::shared_ptr< ossim::iostream >	createIOstream (const std::string &connectionString, const ossimKeywordlist &options=ossimKeywordlist(), std::ios_base::openmode mode=std::ios_base::in|std::ios_base::out|std::ios_base::binary) const
virtual bool	exists (const std::string &connectionString, bool &continueFlag) const
	Methods to test if connection exists. More...
Public Member Functions inherited from ossim::StreamFactoryBase
virtual	~StreamFactoryBase ()

Static Public Member Functions
static StreamFactory *	instance ()

Protected Member Functions
	StreamFactory ()
	StreamFactory (const StreamFactory &)

Static Protected Attributes
static StreamFactory *	m_instance = 0

Detailed Description

Definition at line 22 of file ossimStreamFactory.h.

Constructor & Destructor Documentation

~StreamFactory()

ossim::StreamFactory::~StreamFactory ( )

virtual

Definition at line 33 of file ossimStreamFactory.cpp.

{
}

StreamFactory() [1/2]

ossim::StreamFactory::StreamFactory ( )

protected

Definition at line 139 of file ossimStreamFactory.cpp.

{
}

StreamFactory() [2/2]

ossim::StreamFactory::StreamFactory ( const StreamFactory &  )

protected

Definition at line 144 of file ossimStreamFactory.cpp.

{
}

Member Function Documentation

createIOstream()

std::shared_ptr< ossim::iostream > ossim::StreamFactory::createIOstream ( const std::string &  connectionString, const ossimKeywordlist &  options = ossimKeywordlist(), std::ios_base::openmode  mode = std::ios_base::in|std::ios_base::out|std::ios_base::binary  ) const

virtual

Implements ossim::StreamFactoryBase.

Definition at line 94 of file ossimStreamFactory.cpp.

{
   return std::shared_ptr<ossim::iostream>(0);
}

createIstream()

std::shared_ptr< ossim::istream > ossim::StreamFactory::createIstream ( const std::string &  connectionString, const ossimKeywordlist &  options = ossimKeywordlist(), std::ios_base::openmode  mode = std::ios_base::in|std::ios_base::binary  ) const

virtual

Implements ossim::StreamFactoryBase.

Definition at line 46 of file ossimStreamFactory.cpp.

References ossimFilename::exists().

{
   std::shared_ptr<ossim::istream> result(0);
   ossimFilename f =  connectionString;
   if ( f.exists() )
   {
      // there is a bug in gcc < 5.0 and we can't use constructors in the 
      // C++11 build.  Will refactor to do a new ifstream then use open
      //
      std::shared_ptr<ossim::ifstream> testResult = 
               std::make_shared<ossim::ifstream>();
      testResult->open(connectionString.c_str(), mode);
      if(!testResult->is_open())
      {
         testResult.reset();
      }

      result = testResult;
   }

   return result;
}

createOstream()

std::shared_ptr< ossim::ostream > ossim::StreamFactory::createOstream ( const std::string &  connectionString, const ossimKeywordlist &  options = ossimKeywordlist(), std::ios_base::openmode  mode = std::ios_base::out|std::ios_base::binary  ) const

virtual

Implements ossim::StreamFactoryBase.

Definition at line 72 of file ossimStreamFactory.cpp.

{
   std::shared_ptr<ossim::ostream> result(0);

   std::shared_ptr<ossim::ofstream> testResult = 
      std::make_shared<ossim::ofstream>();
   testResult->open(connectionString.c_str(), mode);
   if ( testResult->is_open() )
   {
      result = testResult;
   }
   else
   {
      testResult.reset();
   }

   return result;
}

exists()

bool ossim::StreamFactory::exists ( const std::string &  connectionString, bool &  continueFlag  ) const

virtual

Methods to test if connection exists.

Parameters

connectionString
continueFlag	Initializes by this, if set to false, indicates factory handles file/url and no more factory checks are necessary. If true, connection is not handled by this factory.

Returns

true on success, false, if not.

Implements ossim::StreamFactoryBase.

Definition at line 102 of file ossimStreamFactory.cpp.

References ossimString::downcase(), ossimFilename::OSSIM_EXIST, and ossimString::substr().

{
   bool result = false;
   if ( connectionString.size() )
   {
      std::string file;
      std::size_t pos = connectionString.find( "://" );
      if ( pos != std::string::npos )
      {
         // is url:
         ossimString protocol = connectionString.substr( 0, pos );
         if ( (protocol.downcase() == "file") && ( connectionString.size() > pos+3) )
         {
            // Strip off "file://" for access(...) function:
            file = connectionString.substr( pos+3 );
         }
      }
      else // not a url
      {
         file = connectionString;
      }

      if ( file.size() )
      {
         // Set continueFlag to false to stop downstream factory exists checks.
         continueFlag = false;
#if defined(_WIN32)
         result = (_access(file.c_str(), ossimFilename::OSSIM_EXIST) == 0);
#else
         result = ((access(file.c_str(), ossimFilename::OSSIM_EXIST)) == 0);
#endif
      }
   }
   return result;
}

instance()

ossim::StreamFactory * ossim::StreamFactory::instance ( )

static

Definition at line 37 of file ossimStreamFactory.cpp.

{
   if(!m_instance)
   {
      m_instance = new ossim::StreamFactory();
   }
   return m_instance;
}

Member Data Documentation

m_instance

ossim::StreamFactory * ossim::StreamFactory::m_instance = 0

staticprotected

Definition at line 65 of file ossimStreamFactory.h.

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The documentation for this class was generated from the following files:

• ossimStreamFactory.h
• ossimStreamFactory.cpp