81 lines
2.4 KiB
Rust
81 lines
2.4 KiB
Rust
use ansi_term::Color;
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use std::process::Command;
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use super::{Context, Module};
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/// Creates a module with the current Go version
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///
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/// Will display the Go version if any of the following criteria are met:
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/// - Current directory contains a `go.mod` file
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/// - Current directory contains a `go.sum` file
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/// - Current directory contains a `glide.yaml` file
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/// - Current directory contains a `Gopkg.yml` file
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/// - Current directory contains a `Gopkg.lock` file
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/// - Current directory contains a `Godeps` directory
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/// - Current directory contains a file with the `.go` extension
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pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
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let is_go_project = context
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.new_scan_dir()
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.set_files(&["go.mod", "go.sum", "glide.yaml", "Gopkg.yml", "Gopkg.lock"])
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.set_extensions(&["go"])
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.set_folders(&["Godeps"])
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.scan();
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if !is_go_project {
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return None;
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}
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match get_go_version() {
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Some(go_version) => {
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const GO_CHAR: &str = "🐹 ";
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let module_color = Color::Cyan.bold();
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let mut module = context.new_module("go")?;
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module.set_style(module_color);
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let formatted_version = format_go_version(go_version)?;
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module.new_segment("symbol", GO_CHAR);
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module.new_segment("version", &formatted_version);
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Some(module)
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}
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None => None,
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}
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}
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fn get_go_version() -> Option<String> {
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Command::new("go")
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.arg("version")
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.output()
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.ok()
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.and_then(|output| String::from_utf8(output.stdout).ok())
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}
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fn format_go_version(go_stdout: String) -> Option<String> {
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let version = go_stdout
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// split into ["", "1.12.4 linux/amd64"]
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.splitn(2, "go version go")
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// return "1.12.4 linux/amd64"
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.nth(1)?
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// split into ["1.12.4", "linux/amd64"]
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.split_whitespace()
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// return "1.12.4"
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.next()?;
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let mut formatted_version = String::with_capacity(version.len() + 1);
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formatted_version.push('v');
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formatted_version.push_str(version);
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Some(formatted_version)
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn test_format_go_version() {
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let input = String::from("go version go1.12 darwin/amd64");
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assert_eq!(format_go_version(input), Some("v1.12".to_string()));
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}
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}
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