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cwFile.h/cpp : Added polymorphic read() and write(). Return kEofRC when read() get an EOF error.

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This commit is contained in:
kevin 2020-12-15 15:29:36 -05:00
parent eed564954a
commit b19d0ff99a
2 changed files with 31 additions and 0 deletions
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5
cwFile.cpp
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@ -208,7 +208,12 @@ cw::rc_t cw::file::read( handle_t h, void* buf, unsigned bufByteCnt )
errno = 0;
if( fread(buf,bufByteCnt,1,p->fp) != 1 )
{
if( feof( p->fp ) != 0 )
return kEofRC;
return cwLogSysError(kReadFailRC,errno,"File read failed on '%s'.", cwStringNullGuard(p->fnStr));
}
return kOkRC;
}

26
cwFile.h
View File

@ -172,6 +172,19 @@ namespace cw
rc_t readDouble( handle_t h, double* buf, unsigned cnt=1 );
rc_t readBool( handle_t h, bool* buf, unsigned cnt=1 );
inline rc_t read( handle_t h, char& x ){ return readChar(h,&x); }
inline rc_t read( handle_t h, unsigned char& x ){ return readUChar(h,&x); }
inline rc_t read( handle_t h, short& x ){ return readShort(h,&x); }
inline rc_t read( handle_t h, unsigned short& x ){ return readUShort(h,&x); }
inline rc_t read( handle_t h, long& x ){ return readLong(h,&x); }
inline rc_t read( handle_t h, unsigned long& x ){ return readULong(h,&x); }
inline rc_t read( handle_t h, int& x ){ return readInt(h,&x); }
inline rc_t read( handle_t h, unsigned int& x ){ return readUInt(h,&x); }
inline rc_t read( handle_t h, float& x ){ return readFloat(h,&x); }
inline rc_t read( handle_t h, double& x ){ return readDouble(h,&x); }
inline rc_t read( handle_t h, bool& x ){ return readBool(h,&x); }
// Binary Array Writing Functions
// Each of these functions writes an array to a binary file.
// The advantage to using functions rather than fileWrite() is only that they are type specific.
@ -187,6 +200,19 @@ namespace cw
rc_t writeDouble( handle_t h, const double* buf, unsigned cnt=1 );
rc_t writeBool( handle_t h, const bool* buf, unsigned cnt=1 );
inline rc_t write( handle_t h, const char& x ) { return writeChar(h,&x); }
inline rc_t write( handle_t h, const unsigned char& x ) { return writeUChar(h,&x); }
inline rc_t write( handle_t h, const short& x ) { return writeShort(h,&x); }
inline rc_t write( handle_t h, const unsigned short& x ) { return writeUShort(h,&x); }
inline rc_t write( handle_t h, const long& x ) { return writeLong(h,&x); }
inline rc_t write( handle_t h, const unsigned long& x ) { return writeULong(h,&x); }
inline rc_t write( handle_t h, const int& x ) { return writeInt(h,&x); }
inline rc_t write( handle_t h, const unsigned int& x ) { return writeUInt(h,&x); }
inline rc_t write( handle_t h, const float& x ) { return writeFloat(h,&x); }
inline rc_t write( handle_t h, const double& x ) { return writeDouble(h,&x); }
inline rc_t write( handle_t h, const bool& x ) { return writeBool(h,&x); }
// Write a string to a file as <N> <char0> <char1> ... <char(N-1)>
// where N is the count of characters in the string.
rc_t writeStr( handle_t h, const char* s );