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# dmd.root.filename

Encapsulate path and file names.
Authors:
Walter Bright, http://www.digitalmars.com
License:
Boost License 1.0

Source root/filename.d

Documentation https://dlang.org/phobos/dmd_root_filename.html

Coverage https://codecov.io/gh/dlang/dmd/src/master/src/dmd/root/filename.d

struct `FileName`;
  Encapsulate path and file names.
  pure nothrow this(const(char)[] `str`);
  static pure nothrow @nogc bool `equals`(const(char)* `name1`, const(char)* `name2`);
  static pure nothrow @nogc bool `equals`(const(char)[] `name1`, const(char)[] `name2`);
    Compare two name according to the platform's rules (case sensitive or not)
  static pure nothrow @nogc bool `absolute`(const(char)* `name`);
  static pure nothrow @nogc bool `absolute`(const(char)[] `name`);
    Determine if path is absolute.
    Parameters:

    const(char)* `name` | path

    Returns:
    true if absolute path name.
  static nothrow const(char)* `toAbsolute`(const(char)* `name`, const(char)* `base` = null);
    Return the given name as an absolute path
    Parameters:

    const(char)* `name` | path
    const(char)* `base` | the absolute base to prefix name with if it is relative

    Returns:
    name as an absolute path relative to base
  static pure nothrow @nogc const(char)* `ext`(const(char)* `str`);
  static pure nothrow @nogc @safe const(char)[] `ext`(const(char)[] `str`);
    Determine file name extension as slice of input.
    Parameters:

    const(char)* `str` | file name

    Returns:
    filename extension (read-only). Points past '.' of extension. If there isn't one, return null.
  static nothrow const(char)* `removeExt`(const(char)* `str`);
  static nothrow const(char)[] `removeExt`(const(char)[] `str`);
    Return file name without extension.

    TODO Once slice are used everywhere and \0 is not assumed, this can be turned into a simple slicing.

    Parameters:

    const(char)* `str` | file name

    Returns:
    mem.xmalloc'd filename with extension removed.
  static pure nothrow @nogc const(char)* `name`(const(char)* `str`);
  static pure nothrow @nogc const(char)[] `name`(const(char)[] `str`);
    Return filename name excluding path (read-only).
  static nothrow const(char)* `path`(const(char)* `str`);
  static nothrow const(char)[] `path`(const(char)[] `str`);
    Return path portion of str. returned string is newly allocated Path does not include trailing path separator.
  static nothrow const(char)[] `replaceName`(const(char)[] `path`, const(char)[] `name`);
    Replace filename portion of path.
  static nothrow const(char)* `combine`(const(char)* `path`, const(char)* `name`);
  static nothrow const(char)[] `combine`(const(char)[] `path`, const(char)[] `name`);
    Combine a `path` and a file `name`
    Parameters:

    const(char)* `path` | Path to append to
    const(char)* `name` | Name to append to path

    Returns:
    The \0 terminated string which is the combination of `path` and `name` and a valid path.
  static nothrow void `splitPath`(int delegate(const(char)*) nothrow `sink`, const(char)* `path`);
    Split path (such as that returned by getenv("PATH")) into pieces, each piece is mem.xmalloc'd Handle double quotes and ~. Pass the pieces to sink()
    Parameters:

    int delegate(const(char)*) nothrow `sink` | send the path pieces here, end when sink() returns !=0
    const(char)* `path` | the path to split up.

  static pure nothrow char[] `addExt`(const(char)[] `name`, const(char)[] `ext`);
    Add the extension `ext` to `name`, regardless of the content of `name`
    Parameters:

    const(char)[] `name` | Path to append the extension to
    const(char)[] `ext` | Extension to add (should not include '.')

    Returns:
    A newly allocated string (free with FileName.free)
  static nothrow const(char)* `defaultExt`(const(char)* `name`, const(char)* `ext`);
  static nothrow const(char)[] `defaultExt`(const(char)[] `name`, const(char)[] `ext`);
    Free returned value with FileName::free()
  static nothrow const(char)* `forceExt`(const(char)* `name`, const(char)* `ext`);
  static nothrow const(char)[] `forceExt`(const(char)[] `name`, const(char)[] `ext`);
    Free returned value with FileName::free()
  static pure nothrow @nogc bool `equalsExt`(const(char)* `name`, const(char)* `ext`);
  static pure nothrow @nogc bool `equalsExt`(const(char)[] `name`, const(char)[] `ext`);
    Returns:
    true if `name`'s extension is `ext`
  const pure nothrow @nogc bool `equalsExt`(const(char)* `ext`);
    Return !=0 if extensions match.
  static nothrow const(char)* `searchPath`(Strings* `path`, const(char)* `name`, bool `cwd`);
    Search paths for file.
    Parameters:

    Strings* `path` | array of path strings
    const(char)* `name` | file to look for
    bool `cwd` | true means search current directory before searching path

    Returns:
    if found, filename combined with path, otherwise null
  static nothrow const(char)* `safeSearchPath`(Strings* `path`, const(char)* `name`);
    Search Path for file in a safe manner.
    Be wary of CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') attacks. http://cwe.mitre.org/data/definitions/22.html More info: https://www.securecoding.cert.org/confluence/display/c/FIO02-C.+Canonicalize+path+names+originating+from+tainted+sources
    Returns:
    NULL file not found !=NULL mem.xmalloc'd file name
  static nothrow int `exists`(const(char)* `name`);
  static nothrow int `exists`(const(char)[] `name`);
    Check if the file the path points to exists
    Returns:
    0 if it does not exists 1 if it exists and is not a directory 2 if it exists and is a directory
  static nothrow bool `ensurePathExists`(const(char)[] `path`);
  static nothrow bool `ensurePathExists`(const(char)* `path`);
    Ensure that the provided path exists
    Accepts a path to either a file or a directory. In the former case, the basepath (path to the containing directory) will be checked for existence, and created if it does not exists. In the later case, the directory pointed to will be checked for existence and created if needed.
    Parameters:

    const(char)[] `path` | a path to a file or a directory

    Returns:
    true if the directory exists or was successfully created
  static nothrow const(char)* `canonicalName`(const(char)* `name`);
  static nothrow const(char)[] `canonicalName`(const(char)[] `name`);
    Return canonical version of name in a malloc'd buffer. This code is high risk.
  static pure nothrow void `free`(const(char)* `str`);
    Free memory allocated by FileName routines

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