/* ========================================================================= * * * * OpenMesh * * Copyright (c) 2001-2015, RWTH-Aachen University * * Department of Computer Graphics and Multimedia * * All rights reserved. * * www.openmesh.org * * * *---------------------------------------------------------------------------* * This file is part of OpenMesh. * *---------------------------------------------------------------------------* * * * Redistribution and use in source and binary forms, with or without * * modification, are permitted provided that the following conditions * * are met: * * * * 1. Redistributions of source code must retain the above copyright notice, * * this list of conditions and the following disclaimer. * * * * 2. Redistributions in binary form must reproduce the above copyright * * notice, this list of conditions and the following disclaimer in the * * documentation and/or other materials provided with the distribution. * * * * 3. Neither the name of the copyright holder nor the names of its * * contributors may be used to endorse or promote products derived from * * this software without specific prior written permission. * * * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER * * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * * * ========================================================================= */ /*===========================================================================*\ * * * $Revision$ * * $Date$ * * * \*===========================================================================*/ //============================================================================= // // Implements the baseclass for IOManager file access modules // //============================================================================= #ifndef __BASEREADER_HH__ #define __BASEREADER_HH__ //=== INCLUDES ================================================================ // STD C++ #include #include #include #include #include // OpenMesh #include #include #include #include //== NAMESPACES =============================================================== namespace OpenMesh { namespace IO { //=== IMPLEMENTATION ========================================================== /** Base class for reader modules. Reader modules access persistent data and pass them to the desired data structure by the means of a BaseImporter derivative. All reader modules must be derived from this class. */ class OPENMESHDLLEXPORT BaseReader { public: /// Destructor virtual ~BaseReader() {}; /// Returns a brief description of the file type that can be parsed. virtual std::string get_description() const = 0; /** Returns a string with the accepted file extensions separated by a whitespace and in small caps. */ virtual std::string get_extensions() const = 0; /// Return magic bits used to determine file format virtual std::string get_magic() const { return std::string(""); } /** Reads a mesh given by a filename. Usually this method opens a stream and passes it to stream read method. Acceptance checks by filename extension can be placed here. Options can be passed via _opt. After execution _opt contains the Options that were available */ virtual bool read(const std::string& _filename, BaseImporter& _bi, Options& _opt) = 0; /** Reads a mesh given by a std::stream. This method usually uses the same stream reading method that read uses. Options can be passed via _opt. After execution _opt contains the Options that were available. Please make sure that if _is is std::ifstream, the correct std::ios_base::openmode flags are set. */ virtual bool read(std::istream& _is, BaseImporter& _bi, Options& _opt) = 0; /** \brief Returns true if writer can parse _filename (checks extension). * _filename can also provide an extension without a name for a file e.g. _filename == "om" checks, if the reader can read the "om" extension * @param _filename complete name of a file or just the extension * @result true, if reader can read data with the given extension */ virtual bool can_u_read(const std::string& _filename) const; protected: // case insensitive search for _ext in _fname. bool check_extension(const std::string& _fname, const std::string& _ext) const; }; /** \brief Trim left whitespace * * Removes whitespace at the beginning of the string * * @param _string input string * @return trimmed string */ static inline std::string &left_trim(std::string &_string) { // Find out if the compiler supports CXX11 #if ( __cplusplus >= 201103L || _MSVC_LANG >= 201103L ) // as with CXX11 we can use lambda expressions _string.erase(_string.begin(), std::find_if(_string.begin(), _string.end(), [](int i)->int { return ! std::isspace(i); })); #else // we do what we did before _string.erase(_string.begin(), std::find_if(_string.begin(), _string.end(), std::not1(std::ptr_fun(std::isspace)))); #endif return _string; } /** \brief Trim right whitespace * * Removes whitespace at the end of the string * * @param _string input string * @return trimmed string */ static inline std::string &right_trim(std::string &_string) { // Find out if the compiler supports CXX11 #if ( __cplusplus >= 201103L || _MSVC_LANG >= 201103L ) // as with CXX11 we can use lambda expressions _string.erase(std::find_if(_string.rbegin(), _string.rend(), [](int i)->int { return ! std::isspace(i); } ).base(), _string.end()); #else // we do what we did before _string.erase(std::find_if(_string.rbegin(), _string.rend(), std::not1(std::ptr_fun(std::isspace))).base(), _string.end()); #endif return _string; } /** \brief Trim whitespace * * Removes whitespace at the beginning and end of the string * * @param _string input string * @return trimmed string */ static inline std::string &trim(std::string &_string) { return left_trim(right_trim(_string)); } //============================================================================= } // namespace IO } // namespace OpenMesh //============================================================================= #endif //=============================================================================