filepath

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Description

The filepath library contains procedures for cross-platform parsing and manipulation of file paths. It supports both Windows and POSIX paths, including Windows share paths.

Library Procedures

Platform Flags

filepath:posix #!optional BOOLprocedure: If invoked without arguments, this procedure returns whether the library procedures assume POSIX-style paths or not. Invoking the procedure with a boolean argument disables or enables POSIX-style paths. If set to false, the library procedures assume Windows-style paths.

filepath:is-windows?procedure: Convenience function that returns the inverse of (filepath:posix).

filepath:is-posix?procedure: Convenience function that returns the result of (filepath:posix).

Path Separators

filepath:path-separatorprocedure: The character that separates directories. On platforms where more than one character is possible, this procedure returns the default one.

filepath:path-separator-setprocedure: The set of all possible path separator characters.

filepath:is-path-separator? CHARprocedure: A predicate that returns whether the given character is a path separator for the current platform.

filepath:search-path-separatorprocedure: The character that is used to separate the entries in the PATH environment variable.

filepath:is-search-path-separator? CHARprocedure: A predicate that returns whether the given character can be used a separator in the PATH environment variable.

filepath:ext-separatorprocedure: The character that is used to separate file extensions.

filepath:is-ext-separator? CHARprocedure: A predicate that returns whether the given character is a file extension separator.

Search Path

filepath:split-search-path STRINGprocedure: Splits a string on the search path separator character.

filepath:get-search-pathprocedure: Returns search path from the OS environment.

Extension procedures

filepath:split-extension PATHprocedure: Splits path on the last extension.

filepath:take-extension PATHprocedure: Returns last extension of given path, or empty string.

filepath:replace-extension PATH EXTprocedure: Replaces the last path extension with the given extension.

filepath:drop-extension PATHprocedure: Removes last extension and extension separator preceding it.

filepath:add-extension PATH EXTprocedure: Appends an extension to the given path.

filepath:has-extension? PATHprocedure: Returns true if the given path has an extension.

filepath:split-all-extensions PATHprocedure: Splits path on the first extension.

filepath:drop-all-extensions PATHprocedure: Removes all extensions from the path.

filepath:take-all-extensions PATHprocedure: Returns all extensions from the path.

Drive procedures

filepath:split-driveprocedure: Splits a path into a Windows drive and a path. When in POSIX mode, / is treated as a drive.

filepath:join-drive DRIVE PATHprocedure: Joins a drive and the rest of the path.

filepath:take-drive PATHprocedure: Returns the drive of a path.

filepath:has-drive? PATHprocedure: Returns whether the given path has a drive.

filepath:drop-drive PATHprocedure: Removes the drive from the given path.

filepath:is-drive? STRINGprocedure: Returns true if the given string is a drive specification.

Operations on a file path

filepath:split-file-name PATHprocedure: Splits a path into directory and file.

filepath:take-file-name PATHprocedure: Returns the filename component of a path.

filepath:replace-file-name PATH FILEprocedure: Replaces the filename component of a path with the given one.

filepath:drop-file-name PATHprocedure: Removes the filename component of a path.

filepath:take-base-name PATHprocedure: Returns the base file name (no extension) of a path.

filepath:replace-base-name PATH BASEprocedure: Replaces the base file name of a path with the given one.

filepath:take-directory PATHprocedure: Returns the directory component of a path.

filepath:replace-directory PATH DIRprocedure: Replaces the directory component of a path with the given one.

filepath:combine PATH1 PATH2procedure: Combines two paths. If the second path is absolute, then it returns the second.

filepath:split-path PATHprocedure: Splits a path by the directory separator.

filepath:join-path LISTprocedure: Joins path elements back together.

filepath:split-directoriesprocedure: As split-path, but does not add trailing separators to each element.

Trailing Separators

filepath:has-trailing-path-separator? PATHprocedure

filepath:add-trailing-path-separator PATHprocedure

filepath:drop-trailing-path-separator PATHprocedure

File Name Normalization and Predicates

filepath:normalise PATHprocedure

filepath:path-equal? PATH1 PATH2procedure

filepath:make-relative ROOT PATHprocedure

filepath:is-relative? PATHprocedure

filepath:is-absolute? PATHprocedure

filepath:is-valid? PATHprocedure

filepath:make-valid PATHprocedure

Version History

1.5 Fixed a bug in is-relative? (thanks to Christian Kellermann for reporting)
1.3 Ensure that unit test scripts returns proper exit code
1.2.2 Added test as a test dependency
1.2.1 Changed import to require-extension
1.2 Fix in filepath:posix
1.1 Ported to Chicken 4
1.0 Initial Release

License

Based on the Haskell FilePath library by Neil Mitchell.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
Neither name of the copyright holders nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND THE CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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