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Public Member Functions | Private Member Functions | Private Attributes | List of all members
libdar::path Class Reference
API

the class path is here to manipulate paths in the Unix notation: using'/' More...

`#include <path.hpp>`

## Public Member Functions
| path (const std::string &s, bool x_undisclosed=false)
| constructor from a string More...
| path (const path &ref)
| copy constructor
| path (path &&ref) noexcept=default
| move constructor
path & | operator= (const path &ref)
| assignment operator
path & | operator= (path &&ref) noexcept=default
| move operator
| ~path ()=default
| destructor
bool | operator== (const path &ref) const
| comparison operator
bool | operator!= (const path &ref) const
std::string | basename () const
| get the basename of a path More...
void | reset_read () const
| reset the read_subdir operation More...
bool | read_subdir (std::string &r) const
| sequentially read the elements that compose the path More...
bool | is_relative () const
| whether the path is relative or absolute (= start with a /)
bool | is_absolute () const
| whether the path is absolute or relative
bool | is_undisclosed () const
| whether the path has an undisclosed part at the beginning
bool | pop (std::string &arg)
| remove and gives in argument the basename of the path More...
bool | pop_front (std::string &arg)
| remove and gives in argument the outer most member of the path More...
path | operator+ (const path &arg) const
| add a path to the current path. The added path must be a relative path More...
path | append (const std::string &sub) const
| add a single sub-directory to the path
path & | operator+= (const path &arg)
| add a path to the current path. The added path must be a relative path More...
path & | operator+= (const std::string &sub)
| add a single sub-directory to the current path object
bool | is_subdir_of (const path &p, bool case_sensit) const
| test whether the current object is a subdir of the method's argument More...
std::string | display () const
| convert back a path to a string More...
std::string | display_without_root () const
| display the path as a string but without the first member of the path More...
U_I | degre () const
| returns the number of member in the path More...
void | explode_undisclosed () const
| if the current object is an undisclosed path, tries to convert it back to normal path

## Private Member Functions
void | reduce ()
void | init (const std::string &chem, bool x_undisclosed)

## Private Attributes
std::list< std::string >::const_iterator | reading
std::list< std::string > | dirs
bool | relative
bool | undisclosed

## Detailed Description

the class path is here to manipulate paths in the Unix notation: using'/'

several operations are provided as well as convertion functions, but for the API user, it can be used as if it was a std::string object. However if the argument is not a valid path, an exception may be thrown by libdar

Note
  the most frequent method you will use from API point of view is path::display() which provides a std::string representing the path

Definition at line 50 of file path.hpp.

## Constructor & Destructor Documentation

## ◆ path()

libdar::path::path | ( | const std::string & | s,
|  | bool | x_undisclosed = `false`
| ) |  |

constructor from a string

This realizes the string to path convertion function

Parameters

  [in] | s | the string to convert to path
  [in] | x_undisclosed | do not split the given string, consider it as a single directory name, even if some '/' are found in it

Note
  empty string is not a valid string (exception thrown)
  having undisclosed set to true, does not allow one to pop() right away, first push must be made. While having undisclosed set to false let the user pop() right away if the given string is composed of several path members ("member1/member2/member3" for example of path allow one to pop() three time, while in the same example setting undisclosed to true, allow one to pop() just once).

## Member Function Documentation

## ◆ basename()

std::string libdar::path::basename | ( |  | ) | const

get the basename of a path

this function returns the basename that's it the right most member of a path

## ◆ degre()

U_I libdar::path::degre | ( |  | ) | const
| inline

returns the number of member in the path

Note
  a absolute path counts one more that its relative brother

Definition at line 166 of file path.hpp.

## ◆ display()

std::string libdar::path::display | ( |  | ) | const

convert back a path to a string

the returned string is the representation of the current object in Unix notation

Referenced by libdar::entrepot_local::get_url(), and libdar::mask::is_covered().

## ◆ display_without_root()

std::string libdar::path::display_without_root | ( |  | ) | const

display the path as a string but without the first member of the path

Note
  if path is equal to root (the first member if relative of / if absolute) an empty string is returned

## ◆ is_subdir_of()

bool libdar::path::is_subdir_of | ( | const path & | p,
|  | bool | case_sensit
| ) |  | const

test whether the current object is a subdir of the method's argument

Parameters

  [in] | p | the path to test with
  [in] | case_sensit | whether the test must be in case sensitive manner or not

Referenced by libdar::exclude_dir_mask::is_covered().

## ◆ operator+()

path libdar::path::operator+ | ( | const path & | arg | ) | const
| inline

add a path to the current path. The added path must be a relative path

Parameters

  [in] | arg | the relative path to add

Returns
  the resulting path, (the current object is not modified, where from the "const" qualifier)

Note
  arg can be a string also, which is converted to a path on the fly

Definition at line 132 of file path.hpp.

## ◆ operator+=()

path& libdar::path::operator+= | ( | const path & | arg | ) |

add a path to the current path. The added path must be a relative path

Parameters

  [in] | arg | the relative path to add

Returns
  the value of the current (modified) object: "*this".

## ◆ pop()

bool libdar::path::pop | ( | std::string & | arg | ) |

remove and gives in argument the basename of the path

Parameters

  [out] | arg | the basename of the path

Returns
  false if the operation was not possible (no sub-directory to pop)

Note
  if the path is absolute the remaing value is '/' when no pop is anymore possible while it is the first component of the original path if the path was relative. a empty path is not a valide value

## ◆ pop_front()

bool libdar::path::pop_front | ( | std::string & | arg | ) |

remove and gives in argument the outer most member of the path

Parameters

  [out] | arg | the value of the outer element of the path

Returns
  true if the pop_front operation was possible and arg could be set.

Note
  removes and returns the first directory of the path, when just the basename is present returns false, if the path is absolute, the first call change it to relative (except if equal to "/" then return false)

## ◆ read_subdir()

bool libdar::path::read_subdir | ( | std::string & | r | ) | const

sequentially read the elements that compose the path

Parameters

  [out] | r | the next element of the path

Returns
  true if a next element could be read

Note
  the reading starts at the root and ends with the basename of the path

## ◆ reset_read()

void libdar::path::reset_read | ( |  | ) | const
| inline

reset the read_subdir operation

reset for read_subdir. next call to read_subdir is the most global

Definition at line 91 of file path.hpp.

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

- path.hpp