DataStock.cpp File Reference

Implementation file of DataStock classes. More...

#include "DataStock.h"
#include <iomanip>
#include <sstream>
#include <cassert>
#include <cstring>
#include <limits>

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Namespaces
	FDS
	For Format of the DataStock output.

Functions
size_t	reconstruct_stream_operator (std::iostream &is, char *buf_to_ret)
	Reconstruct a stream in skipping the values already consumed This is used by friend operator>> ( iostream ) This version use only C-string array, no string or streamstring intermediate. More...
bool	operator== (const SimpleData &lhs, const SimpleData &rhs)
bool	operator== (const MultiData &lhs, const MultiData &rhs)
bool	operator== (const DataCSV &lhs, const DataCSV &rhs)
std::ostream &	operator<< (std::ostream &os, const DataStock &obj)
std::iostream &	operator>> (std::iostream &ios, DataStock &obj)
std::string &	operator<< (std::string &line_csv, const DataStock &obj)
std::string &	operator>> (std::string &line_csv, DataStock &obj)

Variables
const int	FDS::WCOL = 10
	Witdh of the values with setw. More...
const int	FDS::PRECISION = 2
	Precison of floating numbers. More...

Detailed Description

Implementation file of DataStock classes.

Last modified :

Id:

DataStock.cpp 511 2014-12-07 15:42:15Z martinml

Definition in file DataStock.cpp.

Function Documentation

std::ostream& operator<<	(	std::ostream &	os,
		const DataStock &	obj
	)

Single DataStock can be used:

os << data_csv;

And multiple DataStock can be combined:

os << data_csv << data_vol;

Warning

cannot combine DataStocks with std::cout, certainly also cerr, clog
Need to use an intermediate stringstream

Parameters

os	a ostream with text data

Returns

a ref to the output os, allows to be combined

Definition at line 936 of file DataStock.cpp.

References DataStock::helper_operator_write(), and DataStock::helper_operator_write_base().

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std::string& operator<<	(	std::string &	line_csv,
		const DataStock &	obj
	)

Call the standard friend operator>>
Single and multiple DataStock can be used:

line_csv << data_csv << data_vol

Parameters

line_csv

string containing the text data to read

Returns

reference to line_csv, should be empty after the execution

Definition at line 990 of file DataStock.cpp.

bool operator==	(	const SimpleData &	lhs,
		const SimpleData &	rhs
	)

Definition at line 910 of file DataStock.cpp.

References DataStock::date, and SimpleData::value.

bool operator==	(	const MultiData &	lhs,
		const MultiData &	rhs
	)

Definition at line 916 of file DataStock.cpp.

References DataStock::date, and MultiData::values.

bool operator==	(	const DataCSV &	lhs,
		const DataCSV &	rhs
	)

Definition at line 922 of file DataStock.cpp.

References DataCSV::close, DataStock::date, DataCSV::high, DataCSV::low, and DataCSV::open.

std::iostream& operator>>	(	std::iostream &	ios,
		DataStock &	obj
	)

Note

an input/output stream must be used

Single DataStock can be used:

ios >> data_csv;

And multiple DataStock can be combined:

ios >> data_csv >> data_vol;

Normal state of the stream after reading:

• ios.eof() : true; fail(), bad(), good() : false

Test:

• if missing data in the stream is.fail() is true or assert in debug mode
• if more data is.eof() return false

Test than the input was read correctly:

( ios.eof() == true && ios.fail() == false ) == true

Parameters

ios	a iostream with the data
obj	the DataStock object to set

Returns

a ref to the input ios, allows to be combined

Definition at line 948 of file DataStock.cpp.

References BDS::BUFFER_STREAM, DataStock::helper_operator_read(), DataStock::helper_operator_read_base(), and reconstruct_stream_operator().

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std::string& operator>>	(	std::string &	line_csv,
		DataStock &	obj
	)

If the processing is correct the input string should be empty after the execution

line_csv.empty() == true

Parameters

line_csv	string to fill with text data
obj	DataStock object to set

Returns

std::string, allow to combine operators

Definition at line 999 of file DataStock.cpp.

size_t reconstruct_stream_operator	(	std::iostream &	is,
		char *	buf_to_ret
	)

Reconstruct a stream in skipping the values already consumed
This is used by friend operator>> ( iostream )
This version use only C-string array, no string or streamstring intermediate.

More efficient.

To call when the istream has already read all the values.
The function will read the resting values, then the date(at the beginning) and
cat all in buf_to_ret (all size defined in namespace FDS

Definition at line 39 of file DataStock.cpp.

References BDS::BUFFER_DATE, and BDS::BUFFER_STREAM.

Referenced by operator>>().

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