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Diffstat (limited to 'ACE/ACEXML/common/HttpCharStream.h')
-rw-r--r-- | ACE/ACEXML/common/HttpCharStream.h | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/ACE/ACEXML/common/HttpCharStream.h b/ACE/ACEXML/common/HttpCharStream.h new file mode 100644 index 00000000000..593205bec7c --- /dev/null +++ b/ACE/ACEXML/common/HttpCharStream.h @@ -0,0 +1,140 @@ +// -*- C++ -*- + +//============================================================================= +/** + * @file HttpCharStream.h + * + * $Id$ + * + * @author Krishnakumar B <kitty@cs.wustl.edu> + */ +//============================================================================= + +#ifndef _ACEXML_HTTPCHARSTREAM_H_ +#define _ACEXML_HTTPCHARSTREAM_H_ + +#include /**/ "ace/pre.h" +#include "ACEXML/common/ACEXML_Export.h" + +#if !defined (ACE_LACKS_PRAGMA_ONCE) +#pragma once +#endif /* ACE_LACKS_PRAGMA_ONCE */ + +#include "ACEXML/common/CharStream.h" +#include "ACEXML/common/URL_Addr.h" +#include "ACEXML/common/Mem_Map_Stream.h" + +/** + * @class ACEXML_HttpCharStream HttpCharStream.h "ACEXML/common/HttpCharStream.h" + * + * An implementation of ACEXML_CharStream for reading input from a URL. + */ +class ACEXML_Export ACEXML_HttpCharStream : public ACEXML_CharStream +{ +public: + /// Default constructor. + ACEXML_HttpCharStream (void); + + /// Destructor + virtual ~ACEXML_HttpCharStream (void); + + /// Open an URL. + int open (const ACEXML_Char *url); + + /** + * Returns the available ACEXML_Char in the buffer. -1 + * if the object is not initialized properly. + */ + virtual int available (void); + + /** + * Close this stream and release all resources used by it. + */ + virtual int close (void); + + /** + * Read the next ACEXML_Char. Return -1 if we are not able to + * return an ACEXML_Char, 0 if EOS is reached, or 1 if succeed. + */ + virtual int get (ACEXML_Char& ch); + + /** + * Read the next batch of ACEXML_Char strings + */ + virtual int read (ACEXML_Char *str, size_t len); + + /** + * Peek the next ACEXML_Char in the CharStream. Return the + * character if succeess, -1 if EOS is reached. + */ + virtual int peek (void); + + /** + * Resets the file pointer to the beginning of the stream. + */ + virtual void rewind (void); + + /** + * Determine the encoding of the file. + */ + virtual int determine_encoding (void); + + /** + * Get the encoding of the file + */ + virtual const ACEXML_Char* getEncoding (void); + + /* + * Get the systemId for the underlying CharStream + */ + virtual const ACEXML_Char* getSystemId (void); + + +private: + +#if defined (ACE_USES_WCHAR) + /** + * Read the next character from the stream taking into account the + * encoding of the file. + */ + int get_i (ACEXML_Char& ch); + + /** + * Read the next character from the stream taking into account the + * encoding of the file. Subsequent call to get() returns this + * character. + */ + int peek_i (void); + +#endif /* ACE_USES_WCHAR */ + + /** + * Send a HTTP/1.1 request to fetch the contents of the URL. + */ + int send_request (void); + + /** + * Fetch the URL and save it in backing store. + */ + int get_url (size_t& len); + + ACEXML_Char *url_; + + ACEXML_URL_Addr* url_addr_; + + ACEXML_Mem_Map_Stream* stream_; + + Connector* connector_; + + ACE_OFF_T size_; + + ACE_OFF_T data_offset_; + + ACEXML_Char* encoding_; + +}; + + +#include /**/ "ace/post.h" + +#endif /* _ACEXML_HTTPCHARSTREAM_H_ */ |