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Teuchos_FileInputStream.cpp
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4// Teuchos: Common Tools Package
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41
43#include "Teuchos_Assert.hpp"
44
45using namespace Teuchos;
46
48 : XMLInputStream(), file_(std::fopen(filename.c_str(), "rb"))
49{
51 std::runtime_error,
52 "FileInputStream ctor failed to open file: "
53 << filename);
54}
55
56unsigned int FileInputStream::readBytes(unsigned char* const toFill,
57 const unsigned int maxToRead)
58{
59 if (
60#if defined(ICL) || defined(__sgi)
61 feof(file_)
62#else
63 std::feof(file_)
64#endif
65 )
66 return (size_t)0;
67 int n = std::fread((void*) toFill, sizeof(char), maxToRead, file_);
68 if (n==0) return (size_t)0;
69
70 const bool
71 is_eof
72#if defined(ICL) || defined(__sgi)
73 = feof(file_)
74#else
75 = std::feof(file_)
76#endif
77 ;
78
80 n < 0 || (n<(int) maxToRead && !is_eof),
81 std::runtime_error,
82 "FileInputStream::readBytes error"
83 );
84
85 return (size_t) n;
86}
87
88// 2007/07/08: rabartl: Above, for some reason the header <cstdio> on the
89// Intel C++ compiler 8.0 for Windows XP just does not have the function
90// feof(...) in the correct std namespace. On this compiler, you just have to
91// access it from the global namespace.
Definition of XMLInputStream derived class for reading XML from a file.
virtual unsigned int readBytes(unsigned char *const toFill, const unsigned int maxToRead)
Read up to maxToRead bytes.
FileInputStream(const std::string &filename)
Construct with a filename.
XMLInputStream represents an XML input stream that can be used by a XMLInputSource.
#define TEUCHOS_TEST_FOR_EXCEPTION(throw_exception_test, Exception, msg)
Macro for throwing an exception with breakpointing to ease debugging.