bp3d-os 2.2.3

Operating System tools designed for BlockProject3D
Documentation 
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// Copyright (c) 2023, BlockProject 3D
//
// All rights reserved.
//
// 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 the name of BlockProject 3D 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 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 OWNER OR
// 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.

use std::path::PathBuf;

pub fn get_app_cache() -> Option<PathBuf> {
    std::env::var_os("XDG_CACHE_HOME")
        .map(|v| v.into())
        .or_else(|| std::env::var_os("HOME").map(|v| PathBuf::from(v).join(".cache")))
}

pub fn get_app_config() -> Option<PathBuf> {
    std::env::var_os("XDG_CONFIG_HOME")
        .map(|v| v.into())
        .or_else(|| std::env::var_os("HOME").map(|v| PathBuf::from(v).join(".config")))
}

pub fn get_app_data() -> Option<PathBuf> {
    std::env::var_os("XDG_DATA_HOME")
        .map(|v| v.into())
        .or_else(|| std::env::var_os("HOME").map(|v| PathBuf::from(v).join(".local/share")))
}

pub fn get_app_logs() -> Option<PathBuf> {
    None //Per-application logs are unsupported under linux
}

pub fn get_app_documents() -> Option<PathBuf> {
    None //Per-application documents are unsupported under linux
}

pub fn get_user_home() -> Option<PathBuf> {
    std::env::var_os("HOME").map(|v| v.into())
}

pub fn get_user_documents() -> Option<PathBuf> {
    std::env::var_os("XDG_DOCUMENTS_DIR")
        .map(|v| v.into())
        .or_else(|| std::env::var_os("HOME").map(|v| PathBuf::from(v).join("Documents")))
}

pub fn get_user_downloads() -> Option<PathBuf> {
    std::env::var_os("XDG_DOWNLOAD_DIR")
        .map(|v| v.into())
        .or_else(|| std::env::var_os("HOME").map(|v| PathBuf::from(v).join("Downloads")))
}