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Teuchos_FileInputStream.cpp
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00041 
00042 #include "Teuchos_FileInputStream.hpp"
00043 #include "Teuchos_Assert.hpp"
00044 
00045 using namespace Teuchos;
00046 
00047 FileInputStream::FileInputStream(const std::string& filename)
00048   : XMLInputStream(), file_(std::fopen(filename.c_str(), "rb"))
00049 {
00050   TEUCHOS_TEST_FOR_EXCEPTION(file_ == NULL,
00051                      std::runtime_error,
00052                      "FileInputStream ctor failed to open file: " 
00053                      << filename);
00054 }
00055 
00056 unsigned int FileInputStream::readBytes(unsigned char* const toFill, 
00057                                         const unsigned int maxToRead)
00058 {
00059   if (
00060 #if defined(ICL) || defined(__sgi)
00061     feof(file_)
00062 #else
00063     std::feof(file_)
00064 #endif
00065     )
00066     return (size_t)0;
00067   int n = std::fread((void*) toFill, sizeof(char), maxToRead, file_);
00068   if (n==0) return (size_t)0; 
00069 
00070   const bool
00071     is_eof
00072 #if defined(ICL) || defined(__sgi)
00073     = feof(file_)
00074 #else
00075     = std::feof(file_)
00076 #endif
00077     ;
00078 
00079   TEUCHOS_TEST_FOR_EXCEPTION(
00080     n < 0 || (n<(int) maxToRead && !is_eof),
00081     std::runtime_error,
00082     "FileInputStream::readBytes error"
00083     );
00084   
00085   return (size_t) n;
00086 }
00087 
00088 // 2007/07/08: rabartl: Above, for some reason the header <cstdio> on the
00089 // Intel C++ compiler 8.0 for Windows XP just does not have the function
00090 // feof(...) in the correct std namespace.  On this compiler, you just have to
00091 // access it from the global namespace.
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