mirror of
https://github.com/uutils/coreutils
synced 2024-12-20 10:03:33 +00:00
35 lines
1.1 KiB
Rust
35 lines
1.1 KiB
Rust
/*
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* This file is part of the uutils coreutils package.
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*
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* (c) Arcterus <arcterus@mail.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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pub fn from_str(string: &str) -> Result<f64, String> {
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let len = string.len();
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if len == 0 {
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return Err("empty string".to_owned())
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}
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let slice = &string[..len - 1];
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let (numstr, times) = match string.chars().next_back().unwrap() {
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's' | 'S' => (slice, 1),
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'm' | 'M' => (slice, 60),
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'h' | 'H' => (slice, 60 * 60),
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'd' | 'D' => (slice, 60 * 60 * 24),
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val => {
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if !val.is_alphabetic() {
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(string, 1)
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} else if string == "inf" || string == "infinity" {
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("inf", 1)
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} else {
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return Err(format!("invalid time interval '{}'", string))
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}
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}
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};
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match numstr.parse::<f64>() {
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Ok(m) => Ok(m * times as f64),
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Err(e) => Err(format!("invalid time interval '{}': {}", string, e))
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}
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}
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