FileWriteStream Class Reference

Wrapper of C file stream for output using fwrite(). More...

#include <filewritestream.h>

Public Types
typedef char	Ch
	Character type. Only support char.

Public Member Functions
	FileWriteStream (std::FILE *fp, char *buffer, size_t bufferSize)
void	Put (char c)
void	PutN (char c, size_t n)
void	Flush ()
char	Peek () const
char	Take ()
size_t	Tell () const
char *	PutBegin ()
size_t	PutEnd (char *)

Detailed Description

Note

implements Stream concept

Definition at line 32 of file filewritestream.h.

Member Typedef Documentation

Ch

char FileWriteStream::Ch

Definition at line 34 of file filewritestream.h.

Constructor & Destructor Documentation

FileWriteStream()

FileWriteStream::FileWriteStream ( std::FILE * fp, char * buffer, size_t bufferSize )

inline

Definition at line 36 of file filewritestream.h.

                                                                  : fp_(fp), buffer_(buffer), bufferEnd_(buffer + bufferSize), current_(buffer_) { 
        RAPIDJSON_ASSERT(fp_ != 0);
    }

Member Function Documentation

Flush()

void FileWriteStream::Flush ( )

inline

Definition at line 63 of file filewritestream.h.

                 {
        if (current_ != buffer_) {
            size_t result = std::fwrite(buffer_, 1, static_cast<size_t>(current_ - buffer_), fp_);
            if (result < static_cast<size_t>(current_ - buffer_)) {
                // failure deliberately ignored at this time
                // added to avoid warn_unused_result build errors
            }
            current_ = buffer_;
        }
    }

Here is the caller graph for this function:

Peek()

char FileWriteStream::Peek ( ) const

inline

Definition at line 75 of file filewritestream.h.

{ RAPIDJSON_ASSERT(false); return 0; }

Put()

void FileWriteStream::Put ( char c )

inline

Definition at line 40 of file filewritestream.h.

                     { 
        if (current_ >= bufferEnd_)
            Flush();
 
        *current_++ = c;
    }

Here is the call graph for this function:

PutBegin()

char * FileWriteStream::PutBegin ( )

inline

Definition at line 78 of file filewritestream.h.

{ RAPIDJSON_ASSERT(false); return 0; }

PutEnd()

size_t FileWriteStream::PutEnd ( char * )

inline

Definition at line 79 of file filewritestream.h.

{ RAPIDJSON_ASSERT(false); return 0; }

PutN()

void FileWriteStream::PutN ( char c, size_t n )

inline

Definition at line 47 of file filewritestream.h.

                                {
        size_t avail = static_cast<size_t>(bufferEnd_ - current_);
        while (n > avail) {
            std::memset(current_, c, avail);
            current_ += avail;
            Flush();
            n -= avail;
            avail = static_cast<size_t>(bufferEnd_ - current_);
        }
 
        if (n > 0) {
            std::memset(current_, c, n);
            current_ += n;
        }
    }

Here is the call graph for this function:

Take()

char FileWriteStream::Take ( )

inline

Definition at line 76 of file filewritestream.h.

{ RAPIDJSON_ASSERT(false); return 0; }

Tell()

size_t FileWriteStream::Tell ( ) const

inline

Definition at line 77 of file filewritestream.h.

{ RAPIDJSON_ASSERT(false); return 0; }

---

The documentation for this class was generated from the following file:

• libraries/fc/include/fc/crypto/webauthn_json/include/rapidjson/filewritestream.h