00001 /* 00002 Copyright (c) 2010, The Barbarian Group 00003 All rights reserved. 00004 00005 Redistribution and use in source and binary forms, with or without modification, are permitted provided that 00006 the following conditions are met: 00007 00008 * Redistributions of source code must retain the above copyright notice, this list of conditions and 00009 the following disclaimer. 00010 * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and 00011 the following disclaimer in the documentation and/or other materials provided with the distribution. 00012 00013 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED 00014 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 00015 PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR 00016 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 00017 TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00018 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00019 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00020 POSSIBILITY OF SUCH DAMAGE. 00021 */ 00022 00023 #pragma once 00024 00025 #include "cinder/Cinder.h" 00026 #include "cinder/Stream.h" 00027 00028 namespace cinder { 00029 00030 class Url { 00031 public: 00032 Url() {} 00033 explicit Url( const std::string &urlString ); 00034 00035 std::string str() const { return mStr; } 00036 const char* c_str() const { return mStr.c_str(); } 00037 00038 private: 00039 std::string mStr; 00040 }; 00041 00043 // This is an abstract base class for implementing IStreamUrl 00044 class IStreamUrlImpl { 00045 protected: 00046 IStreamUrlImpl( const std::string &user, const std::string &password ) 00047 : mUser( user ), mPassword( password ) {} 00048 00049 public: 00050 virtual ~IStreamUrlImpl() {} 00051 00052 std::string getUser() const { return mUser; } 00053 std::string getPassword() const { return mPassword; } 00054 00055 virtual size_t readDataAvailable( void *dest, size_t maxSize ) = 0; 00056 virtual void seekAbsolute( off_t absoluteOffset ) = 0; 00057 virtual void seekRelative( off_t relativeOffset ) = 0; 00058 virtual off_t tell() const = 0; 00059 virtual off_t size() const = 0; 00060 00061 virtual bool isEof() const = 0; 00062 virtual void IORead( void *t, size_t size ) = 0; 00063 00064 protected: 00065 const std::string mUser, mPassword; 00066 }; 00068 00070 typedef shared_ptr<class IStreamUrl> IStreamUrlRef; 00071 00073 class IStreamUrl : public IStream { 00074 public: 00076 static IStreamUrlRef createRef( const std::string &url, const std::string &user = "", const std::string &password = "" ); 00077 00078 virtual size_t readDataAvailable( void *dest, size_t maxSize ) { return mImpl->readDataAvailable( dest, maxSize ); } 00079 virtual void seekAbsolute( off_t absoluteOffset ) { return seekAbsolute( absoluteOffset ); } 00080 virtual void seekRelative( off_t relativeOffset ) { return seekRelative( relativeOffset ); } 00081 virtual off_t tell() const { return mImpl->tell(); } 00082 virtual off_t size() const { return mImpl->size(); } 00083 00084 virtual bool isEof() const { return mImpl->isEof(); } 00085 00086 std::string getUser() const { return mImpl->getUser(); } 00087 std::string getPassword() const { return mImpl->getPassword(); } 00088 00089 protected: 00090 IStreamUrl( const std::string &url, const std::string &user, const std::string &password ); 00091 00092 virtual void IORead( void *t, size_t size ) { mImpl->IORead( t, size ); } 00094 virtual void IOWrite( const void *t, size_t size ) { throw std::exception(); } 00095 00096 shared_ptr<IStreamUrlImpl> mImpl; 00097 }; 00098 00099 IStreamUrlRef loadUrlStream( const Url &url ); 00100 IStreamUrlRef loadUrlStream( const std::string &url, const std::string &user = "", const std::string &password = "" ); 00101 00102 } // namespace cinder