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use super::Segment; | ||
use crate::context::Context; | ||
use ansi_term::Color; | ||
use std::path::PathBuf; | ||
use std::process::Command; | ||
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/// Creates a segment with the current Python version | ||
/// | ||
/// Will display the Python version if any of the following criteria are met: | ||
/// - Current directory contains a `.py` file | ||
/// - Current directory contains a `.python-version` file | ||
/// - Current directory contains a `requirements.txt` file | ||
/// - Current directory contains a `pyproject.toml` file | ||
pub fn segment(context: &Context) -> Option<Segment> { | ||
let is_py_project = context.dir_files.iter().any(has_py_files); | ||
if !is_py_project { | ||
return None; | ||
} | ||
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match get_python_version() { | ||
Some(python_version) => { | ||
const PYTHON_CHAR: &str = "🐍"; | ||
const SEGMENT_COLOR: Color = Color::Yellow; | ||
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let mut segment = Segment::new("python"); | ||
segment.set_style(SEGMENT_COLOR); | ||
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let formatted_version = format_python_version(python_version); | ||
segment.set_value(format!("{} {}", PYTHON_CHAR, formatted_version)); | ||
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Some(segment) | ||
} | ||
None => None, | ||
} | ||
} | ||
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fn has_py_files(dir_entry: &PathBuf) -> bool { | ||
let is_py_file = | ||
|d: &PathBuf| -> bool { d.is_file() && d.extension().unwrap_or_default() == "py" }; | ||
let is_python_version = |d: &PathBuf| -> bool { | ||
d.is_file() && d.file_name().unwrap_or_default() == ".python-version" | ||
}; | ||
let is_requirements_txt = |d: &PathBuf| -> bool { | ||
d.is_file() && d.file_name().unwrap_or_default() == "requirements.txt" | ||
}; | ||
let is_py_project = |d: &PathBuf| -> bool { | ||
d.is_file() && d.file_name().unwrap_or_default() == "pyproject.toml" | ||
}; | ||
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is_py_file(&dir_entry) | ||
|| is_python_version(&dir_entry) | ||
|| is_requirements_txt(&dir_entry) | ||
|| is_py_project(&dir_entry) | ||
} | ||
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fn get_python_version() -> Option<String> { | ||
match Command::new("python").arg("--version").output() { | ||
Ok(output) => Some(String::from_utf8(output.stdout).unwrap()), | ||
Err(_) => None, | ||
} | ||
} | ||
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fn format_python_version(python_stdout: String) -> String { | ||
format!("v{}", python_stdout.trim_start_matches("Python ").trim()) | ||
} | ||
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#[cfg(test)] | ||
mod tests { | ||
use super::*; | ||
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#[test] | ||
fn test_format_python_version() { | ||
let input = String::from("Python 3.7.2"); | ||
assert_eq!(format_python_version(input), "v3.7.2"); | ||
} | ||
} |
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