sys::io Namespace Reference

This namespace contains c++ wrappers for <cstdio> functionality. More...

Classes
struct	contains
	Check whether a set type contains a value. More...
struct	contains< set< Set ... >, Value >
	Specialise io::contains to unpack io::set. More...
struct	enable_if
	Similar to std::enable_if, but it also has the value of the expression. More...
struct	enable_if< false, T >
	Specialise enable_if for a false expression. More...
class	file
	Produces file access types around the C file handling facilities. More...
class	file< link, Features ... >
	Specialise for FILE object linking file instances. More...
class	file< own, Features ... >
	Specialise for FILE object owning file instances. More...
class	file_feature
	Implements the base functionality of all file access types. More...
class	file_feature< FileT, read, Tail ... >
	Implement read support for file types. More...
class	file_feature< FileT, seek, Tail ... >
	Implement seek support for file types. More...
class	file_feature< FileT, write, Tail ... >
	Implement write support for file types. More...
struct	is_superset_of
	Check whether the left hand set is a superest of the right hand set. More...
struct	is_superset_of< LSetT, set< RSet ... > >
	Specialise is_superset_of to unpack the right hand io::set. More...
struct	query
	Ask questions about the contents of a string. More...
struct	set
	Pack a set of integral values in a type. More...

Typedefs
template<class SetT , auto Value>
using	contains_t = typename contains< SetT, Value >::type
	Check whether a set type contains a value. More...
template<class LSetT , class RSetT >
using	is_superset_of_t = typename is_superset_of< LSetT, RSetT >::type
	Check whether the left hand set is a superest of the right hand set. More...

Enumerations
enum	feature { feature::read, feature::write, feature::seek }
	Feature flags for file type composition. More...
enum	ownership { ownership::own, ownership::link }
	Ownership relation to the underlying FILE object. More...

Variables
template<class SetT , auto Value>
constexpr const auto	contains_v = contains<SetT, Value>::value
	Check whether a set type contains a value. More...
template<class LSetT , class RSetT >
constexpr const auto	is_superset_of_v = is_superset_of<LSetT, RSetT>::value
	Check whether the left hand set is a superest of the right hand set. More...
file< link, write >	ferr {stderr}
	File access instances for stderr.
file< link, write >	fout {stdout}
	File access instances for stdout.
file< link, read >	fin {stdin}
	File access instances for stdin.

Detailed Description

This namespace contains c++ wrappers for <cstdio> functionality.

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Class Documentation

sys::io::contains

struct sys::io::contains

template<class SetT, auto Value>
struct sys::io::contains< SetT, Value >

Check whether a set type contains a value.

Template Parameters

SetT	A set of integral values packed in io::set
Value	The value to look up

sys::io::file

class sys::io::file

template<ownership Ownership, feature ... Features>
class sys::io::file< Ownership, Features >

Produces file access types around the C file handling facilities.

Template Parameters

Ownership	Determine the ownership relationship to the underlying FILE object
Features	A list of features the file type supports

See also

ownership

feature

file<own, Features ...>

file<link, Features ...>

file_feature

sys::io::is_superset_of

struct sys::io::is_superset_of

template<class LSetT, class RSetT>
struct sys::io::is_superset_of< LSetT, RSetT >

Check whether the left hand set is a superest of the right hand set.

Template Parameters

LSetT,RSetT

Two io::set instances

sys::io::query

struct sys::io::query

Ask questions about the contents of a string.

Collaboration diagram for sys::io::query:

Class Members
struct contains_ftor	contains	Query the string for characters.

sys::io::set

struct sys::io::set

template<auto ... Set>
struct sys::io::set< Set >

Pack a set of integral values in a type.

Template Parameters

Set	A set of integral values

Typedef Documentation

contains_t

template<class SetT , auto Value>

using sys::io::contains_t = typedef typename contains<SetT, Value>::type

Check whether a set type contains a value.

Template Parameters

SetT	A set of integral values packed in io::set
Value	The value to look up

is_superset_of_t

template<class LSetT , class RSetT >

using sys::io::is_superset_of_t = typedef typename is_superset_of<LSetT, RSetT>::type

Check whether the left hand set is a superest of the right hand set.

Template Parameters

LSetT,RSetT

Two io::set instances

Enumeration Type Documentation

feature

enum sys::io::feature

strong

Feature flags for file type composition.

See also

file_feature

Enumerator
read	The file type supports read operations. See also file_feature<FileT, read, Tail ...>
write	The file type supports write operations. See also file_feature<FileT, write, Tail ...>
seek	The file type supports seek operations. See also file_feature<FileT, seek, Tail ...>

ownership

enum sys::io::ownership

strong

Ownership relation to the underlying FILE object.

Enumerator
own	The file instance owns the FILE object. See also file<own, Features ...>
link	The file instance refers to a FILE object managed somewhere else. See also file<link, Features ...>

Variable Documentation

contains_v

template<class SetT , auto Value>

constexpr const auto sys::io::contains_v = contains<SetT, Value>::value

constexpr

Check whether a set type contains a value.

Template Parameters

SetT	A set of integral values packed in io::set
Value	The value to look up

is_superset_of_v

template<class LSetT , class RSetT >

constexpr const auto sys::io::is_superset_of_v = is_superset_of<LSetT, RSetT>::value

constexpr

Check whether the left hand set is a superest of the right hand set.

Template Parameters

LSetT,RSetT

Two io::set instances