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89 lines
3.2 KiB
C++
89 lines
3.2 KiB
C++
#ifndef RBIMPL_DOSISH_H /*-*-C++-*-vi:se ft=cpp:*/
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#define RBIMPL_DOSISH_H
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/**
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* @file
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* @author Ruby developers <ruby-core@ruby-lang.org>
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* @copyright This file is a part of the programming language Ruby.
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* Permission is hereby granted, to either redistribute and/or
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* modify this file, provided that the conditions mentioned in the
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* file COPYING are met. Consult the file for details.
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* @warning Symbols prefixed with either `RBIMPL` or `rbimpl` are
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* implementation details. Don't take them as canon. They could
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* rapidly appear then vanish. The name (path) of this header file
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* is also an implementation detail. Do not expect it to persist
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* at the place it is now. Developers are free to move it anywhere
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* anytime at will.
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* @note To ruby-core: remember that this header can be possibly
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* recursively included from extension libraries written in C++.
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* Do not expect for instance `__VA_ARGS__` is always available.
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* We assume C99 for ruby itself but we don't assume languages of
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* extension libraries. They could be written in C++98.
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* @brief Support for so-called dosish systems.
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*/
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#ifdef __CYGWIN__
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#undef _WIN32
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#endif
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#if defined(_WIN32)
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/*
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DOSISH mean MS-Windows style filesystem.
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But you should use more precise macros like DOSISH_DRIVE_LETTER, PATH_SEP,
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ENV_IGNORECASE or CASEFOLD_FILESYSTEM.
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*/
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#define DOSISH 1
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# define DOSISH_DRIVE_LETTER
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#endif
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#ifdef _WIN32
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#include "ruby/win32.h"
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#endif
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/** The delimiter of `PATH` environment variable. */
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#if defined(DOSISH)
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#define PATH_SEP ";"
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#else
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#define PATH_SEP ":"
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#endif
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/** Identical to #PATH_SEP, except it is of type `char`. */
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#define PATH_SEP_CHAR PATH_SEP[0]
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/**
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* @private
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*
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* @deprecated This macro once was a thing in the old days, but makes no sense
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* any longer today. Exists here for backwards compatibility
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* only. You can safely forget about it.
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*
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* @internal
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*
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* For historical interests: there was an operating system called Human68k
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* which used an environment variable called `"path"` for this purpose.
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*/
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#define PATH_ENV "PATH"
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#if defined(DOSISH)
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#define ENV_IGNORECASE
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#endif
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/**
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* Stone age assumption was that an operating system supports only one file
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* system at a moment. This macro was to detect if such (one and only) file
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* system has case sensitivity. This assumption is largely not true any
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* longer; most operating systems can mount many kinds of file systems side by
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* side. Also there are file systems that do or do not ignore cases depending
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* on configuration (e.g. EXT4's `casefold` feature).
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*
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* This macro is still used internally (for instance Ruby level constant
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* `File::FNM_SYSCASE` depends on it), but it is basically a wrong idea for you
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* to use it today. Please just find another way.
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*/
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#ifndef CASEFOLD_FILESYSTEM
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# if defined DOSISH
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# define CASEFOLD_FILESYSTEM 1
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# else
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# define CASEFOLD_FILESYSTEM 0
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# endif
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#endif
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#endif /* RBIMPL_DOSISH_H */
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