xmake-docs/docs/api/scripts/builtin-modules/path.md

path

The path operation module implements cross-platform path operations, which is a custom module of xmake.

path.new

• Create a new path instance

  local p = path.new("/tmp/file.txt")
  print(p:filename())
  

The result is: file.txt

path.join

• Stitching path

Adding multiple path items by splicing. Due to the path difference of windows/unix style, using api to append paths is more cross-platform, for example:

print(path.join("$(tmpdir)", "dir1", "dir2", "file.txt"))

The above splicing on Unix is equivalent to: $(tmpdir)/dir1/dir2/file.txt, and on Windows is equivalent to: $(tmpdir)\\dir1\\dir2\\file.txt

If you find this cumbersome and not clear enough, you can use: path.translate to format the conversion path string to the format supported by the current platform.

path.translate

• Convert path to the path style of the current platform

Formatting converts the specified path string to the path style supported by the current platform, and supports the path string parameter of the windows/unix format to be passed in, even mixed, such as:

print(path.translate("$(tmpdir)/dir/file.txt"))
print(path.translate("$(tmpdir)\\dir\\file.txt"))
print(path.translate("$(tmpdir)\\dir/dir2//file.txt"))

The path strings of the above three different formats, after being standardized by translate, will become the format supported by the current platform, and the redundant path separator will be removed.

path.basename

• Get the file name with no suffix at the end of the path

  print(path.basename("$(tmpdir)/dir/file.txt"))
  

The result is: file

path.filename

• Get the file name with the last suffix of the path

  print(path.filename("$(tmpdir)/dir/file.txt"))
  

The result is: file.txt

path.extension

• Get the suffix of the path

  print(path.extensione("$(tmpdir)/dir/file.txt"))
  

The result is: .txt

path.directory

• Get the directory name of the path

  Print(path.directory("$(tmpdir)/dir/file.txt"))
  

The result is: $(tmpdir)/dir

path.relative

• Convert to relative path

  print(path.relative("$(tmpdir)/dir/file.txt", "$(tmpdir)"))
  

The result is: dir/file.txt

The second parameter is to specify the relative root directory. If not specified, the default is relative to the current directory:

os.cd("$(tmpdir)")
print(path.relative("$(tmpdir)/dir/file.txt"))

The result is the same.

path.absolute

• Convert to absolute path

  print(path.absolute("dir/file.txt", "$(tmpdir)"))
  

The result is: $(tmpdir)/dir/file.txt

The second parameter is to specify the relative root directory. If not specified, the default is relative to the current directory:

os.cd("$(tmpdir)")
print(path.absolute("dir/file.txt"))

The result is the same.

path.is_absolute

• Determine if it is an absolute path

  if path.is_absolute("/tmp/file.txt") then
  -- if it is an absolute path
  end
  

path.split

• Split the path by the separator

  print(path.split("/tmp/file.txt"))
  

The result is: { "tmp", "file.txt" }

path.sep

• Return the current separator, usually /

  print(path.sep("/tmp/file.txt"))
  

The result is: /

path.islastsep

• Get if the last character is a separator

  if (path.islastsep("/tmp/dir/")) then
  -- if the last character is a separator
  end
  

path.splitenv

• Split a environment variable value of an array of pathes

  local pathes = path.splitenv(vformat("$(env PATH)"))
  
  -- for windows
  local pathes = path.splitenv("C:\\Windows;C:\\Windows\\System32")
  -- got { "C:\\Windows", "C:\\Windows\\System32" }
  
  -- for *nix
  local pathes = path.splitenv("/usr/bin:/usr/local/bin")
  -- got { "/usr/bin", "/usr/local/bin" }
  

The result is an array of strings, each item is a path in the input string.

path.joinenv

• Concat two environment variable by the environment separator

  print(path.joinenv({"/tmp/dir", "/tmp/dir2"}))
  

The result is: /tmp/dir;/tmp/dir2 (on Windows)

path.envsep

• Get the environment separator

  print(path.envsep())
  

The result is: ;

path.cygwin_path

• Get the converted MSYS2/Cygwin style path

  print(path.cygwin_path("C:\\Windows"))
  

The result is: /C/Windows

path.pattern

• Convert path pattern to lua pattern

  print(path.pattern("/tmp/file.txt"))
  

The result is: /[tT][mM][pP]/[fF][iI][lL][eE]%.[tT][xX][tT]