mirror of
https://github.com/fluencelabs/examples
synced 2025-05-01 05:32:18 +00:00
53 lines
1.5 KiB
Rust
53 lines
1.5 KiB
Rust
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/*
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* Copyright 2020 Fluence Labs Limited
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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pub(super) fn to_full_path<S>(cmd: S) -> String
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where
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S: Into<String>,
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{
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use std::path::Path;
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use std::path::Component;
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let cmd = cmd.into();
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let path = Path::new(&cmd);
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let mut components = path.components();
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let is_absolute = components.next() == Some(Component::RootDir);
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if !is_absolute {
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return cmd;
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}
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let parent = match components.next() {
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Some(Component::Normal(path)) => path.to_str().unwrap(),
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_ => return cmd,
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};
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match std::env::var(parent) {
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Ok(to_dir) => {
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let mut full_path = std::path::PathBuf::from(to_dir);
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// TODO: optimize this
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#[allow(clippy::while_let_on_iterator)]
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while let Some(component) = components.next() {
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full_path.push(component);
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}
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full_path.to_string_lossy().into_owned()
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}
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Err(_) => cmd,
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}
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}
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