GenericContainer YAML Interface

This module provides interface with YAML files. More...

Functions
bool	GC_namespace::file_YAML_to_GC (string_view file_name, GenericContainer &gc)
bool	GC_namespace::YAML_to_GC (istream_type &stream, GenericContainer &gc)
bool	GC_namespace::YAML_to_GC (string const &DATA, GenericContainer &gc)
void	GC_namespace::GC_to_YAML (GenericContainer const &gc, std::string &res)
void	GC_namespace::GC_to_YAML (GenericContainer const &gc, ostream_type &stream)

Detailed Description

This module provides interface with YAML files.

The GenericContainer (GC) module offers a flexible container for storing various data types such as booleans, integers, floating-point numbers, complex numbers, and strings. It also supports structured data types such as vectors and maps. The C++ interface allows for seamless interaction with the container, enabling users to perform operations like adding elements, retrieving data, and managing hierarchical structures.

Overview

This tutorial explains how to use the GenericContainer YAML interface for converting between YAML data and the GenericContainer object.

The GenericContainer is a flexible structure that can store various data types like booleans, integers, floating-point numbers, complex numbers, strings, vectors, and maps. The interface provides multiple ways to convert YAML files, streams, or strings into GenericContainer objects and vice versa.

Loading YAML Data into a GenericContainer

There are several ways to load YAML data into a GenericContainer.

Loading YAML from a File

The file_YAML_to_GC function reads YAML data from a file and populates a GenericContainer. This is useful for handling configuration files or other data stored in YAML format.

bool file_YAML_to_GC( std::string const & file_name_YAML, GenericContainer & gc );

Example:

GenericContainer gc;
std::string file_name = "config.yaml";
 
if (file_YAML_to_GC(file_name, gc)) {
  std::cout << "YAML file successfully loaded into GenericContainer." << std::endl;
} else {
  std::cerr << "Failed to load YAML file." << std::endl;
}

Loading YAML from an Input Stream

The YAML_to_GC function allows loading YAML data from an input stream, such as a file stream or a string stream.

bool YAML_to_GC( istream_type & file_YAML, GenericContainer & gc );

Example:

GenericContainer gc;
std::ifstream file_stream("config.yaml");
 
if (YAML_to_GC(file_stream, gc)) {
  std::cout << "YAML stream successfully loaded into GenericContainer." << std::endl;
} else {
  std::cerr << "Failed to load YAML stream." << std::endl;
}

Loading YAML from a String

You can convert a YAML string directly into a GenericContainer using the YAML_to_GC function.

bool YAML_to_GC( std::string const & YAML, GenericContainer & gc );

Example:

GenericContainer gc;
std::string yaml_data = R"(
    key1: value1
    key2: 42
    key3:
      - 1
      - 2
      - 3
)";
 
if (YAML_to_GC(yaml_data, gc)) {
  std::cout << "YAML string successfully loaded into GenericContainer." << std::endl;
} else {
  std::cerr << "Failed to load YAML string." << std::endl;
}

Loading YAML from a Vector of Strings

If you have multiple YAML strings in a vector, you can load them into a GenericContainer using the YAML_to_GC function.

bool YAML_to_GC( std::vector<std::string> const & YAML, GenericContainer & gc );

Example:

GenericContainer gc;
std::vector<std::string> yaml_fragments = {
    "key1: value1",
    "key2: 42",
    "key3:\n  - 1\n  - 2\n  - 3"
};
 
if (YAML_to_GC(yaml_fragments, gc)) {
  std::cout << "YAML fragments successfully loaded into GenericContainer." << std::endl;
} else {
  std::cerr << "Failed to load YAML fragments." << std::endl;
}

Converting a GenericContainer to YAML

You can also convert a GenericContainer back to YAML format.

Converting to a YAML File Stream

You can write the contents of a GenericContainer to an output stream (e.g., a file) in YAML format using the GC_to_YAML function.

void GC_to_YAML( GenericContainer const & gc, ostream_type & file_YAML );

Example:

GenericContainer gc;
gc["key1"] = "value1";
gc["key2"] = 42;
 
std::ofstream file_stream("output.yaml");
GC_to_YAML(gc, file_stream);
 
std::cout << "YAML data written to output.yaml" << std::endl;

Functions

file_YAML_to_GC()

bool GC_namespace::file_YAML_to_GC ( string_view file_name, GenericContainer & gc )

inline

Convert a YAML file to a GenericContainer.

This function reads YAML data from the provided input stream and populates the given GenericContainer with the parsed data.

Parameters

[in]	file_name	Input file name containing YAML data.
[out]	gc	The GenericContainer to be populated.

Returns

true if the conversion was successful, false otherwise.

GC_to_YAML() [1/2]

void GC_namespace::GC_to_YAML ( GenericContainer const & gc, ostream_type & stream )

inline

Convert a GenericContainer to a YAML file stream.

This function converts the contents of the provided GenericContainer into YAML format and writes it to the specified output stream.

Parameters

[in]	gc	The GenericContainer to convert.
[out]	stream	Output stream to write the YAML data.

GC_to_YAML() [2/2]

void GC_namespace::GC_to_YAML ( GenericContainer const & gc, std::string & res )

inline

Convert a vector of YAML strings to a GenericContainer.

This function parses each string in the given vector as YAML and populates the specified GenericContainer with the resulting data.

Parameters

[in]	gc	The GenericContainer to convert.
[out]	DATA	String to store the YAML encoded GenericContainer.

YAML_to_GC() [1/2]

bool GC_namespace::YAML_to_GC ( istream_type & stream, GenericContainer & gc )

inline

Convert a YAML file stream to a GenericContainer.

This function reads YAML data from the provided input stream and populates the given GenericContainer with the parsed data.

Parameters

[in]	stream	Input stream containing YAML data.
[out]	gc	The GenericContainer to be populated.

Returns

true if the conversion was successful, false otherwise.

YAML_to_GC() [2/2]

bool GC_namespace::YAML_to_GC ( string const & DATA, GenericContainer & gc )

inline

Convert a YAML string to a GenericContainer.

This function parses the given YAML string and populates the specified GenericContainer with the resulting data.

Parameters

[in]	DATA	The YAML string to parse.
[out]	gc	The GenericContainer to be populated.

Returns

true if the conversion was successful, false otherwise.