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use crate::errors::*;
use serde::{Deserialize, Serialize};
use std::fmt::{Display, Formatter};
use std::path::{Path, PathBuf};
#[derive(
Serialize,
Deserialize,
Clone,
Debug,
Hash,
PartialEq,
Eq,
PartialOrd,
Ord,
juniper::GraphQLObject,
)]
/// Metadata about the environment
pub struct Env {
/// The username
pub username: String,
/// The hostname,
pub hostname: String,
/// The distro
pub distro: String,
/// The real name for the user
pub realname: String,
/// The device name
pub devicename: String,
}
impl Env {
/// uses the PATH environment variable to search
/// for a filename matching the specified name.
/// if a matching filename is not found, it
/// will check for the existence of name.exe
/// and name.bat
///
/// Example
///
/// ```
/// use reef::Env;
/// let git_path = Env::which("git").unwrap();
/// assert!(git_path.exists());
/// ```
pub fn which(name: &str) -> Result<PathBuf> {
super::paths::Paths::which(name)
}
/// extracts the text following the shebang #!
///
/// Example
///
/// given a file
/// with the contents:
///
/// #!C:/Ruby26-x64/bin/ruby.exe
///
/// the shebang method will return C:/Ruby26-x64/bin/ruby.exe
///
/// ```
/// use reef::Env;
/// use std::env;
/// let path = std::env::temp_dir().join("test.rb");
/// std::fs::write(&path,b"#!C:/Ruby26-x64/bin/ruby.exe")?;
/// let target = Env::shebang(&path).unwrap();
/// assert_eq!("C:/Ruby26-x64/bin/ruby.exe",target);
/// # Ok::<(), std::io::Error>(())
/// ```
pub fn shebang(path: &Path) -> Result<String> {
super::paths::Paths::shebang(path)
}
}
impl Default for Env {
fn default() -> Self {
Env {
username: whoami::username(),
hostname: whoami::hostname(),
distro: whoami::distro(),
realname: whoami::realname(),
devicename: whoami::devicename(),
}
}
}
impl Display for Env {
fn fmt(&self, f: &mut Formatter) -> std::fmt::Result {
write!(f, "username {}", self.username)
}
}
#[cfg(test)]
#[test]
fn which() {
match super::Env::which("rake") {
Ok(rake_path) => {
assert!(rake_path.exists());
//let (name, args) = parse_command("rake default");
//assert!(name.contains("ruby"), "{} did not contains 'ruby'", name);
//assert_eq!(2, args.len(), "args: {:?}", args)
}
Err(_) => assert!(false, "which(\"rake\") failed"),
}
}