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#![forbid(warnings)]
#![warn(missing_copy_implementations, trivial_casts, trivial_numeric_casts, unsafe_code,
unused_extern_crates, unused_import_braces, unused_qualifications, unused_results,
variant_size_differences)]
#![cfg_attr(feature="cargo-clippy", deny(clippy, clippy_pedantic))]
#![cfg_attr(feature="cargo-clippy", allow(missing_docs_in_private_items))]
#[cfg(windows)]
extern crate winapi;
#[cfg(windows)]
extern crate winreg;
use std::ffi::OsStr;
use std::path::PathBuf;
use std::process::{Command, Stdio};
use std::str;
fn git_ran_ok<S: AsRef<OsStr>>(binary_path: S) -> bool {
Command::new(binary_path)
.arg("--version")
.stdout(Stdio::null())
.stderr(Stdio::null())
.status()
.is_ok()
}
fn try_git_with_no_path(locate_command: &str) -> Option<::std::path::PathBuf> {
if git_ran_ok("git") {
if let Ok(output) = Command::new(locate_command).arg("git").output() {
let git = str::from_utf8(&output.stdout)
.expect(&format!("Non-UTF8 output when running `{} git`.", locate_command))
.trim();
return Some(PathBuf::from(git));
}
}
None
}
#[cfg(windows)]
mod find_git {
use super::{git_ran_ok, try_git_with_no_path};
use std::ffi::OsStr;
use std::io::Result;
use std::path::PathBuf;
use winapi::HKEY;
use winreg::RegKey;
use winreg::enums::{HKEY_CURRENT_USER, HKEY_LOCAL_MACHINE, KEY_READ};
fn try_full_path_to_git<P: AsRef<OsStr>>(predefined_key: HKEY,
subkey_path: P,
value: P)
-> Option<PathBuf> {
let root = RegKey::predef(predefined_key);
if let Ok(subkey) = root.open_subkey_with_flags(subkey_path, KEY_READ) {
let subkey_value: Result<String> =
subkey.get_value(value);
if let Ok(install_path) = subkey_value {
let binary_path = PathBuf::from(&install_path).join("bin").join("git.exe");
if git_ran_ok(binary_path.as_os_str()) {
return Some(binary_path);
}
}
}
None
}
#[cfg_attr(rustfmt, rustfmt_skip)]
pub fn git_path() -> Option<PathBuf> {
const SUBKEY_RECENT: &'static str = "Software\\GitForWindows";
const SUBKEY_32_BIT: &'static str =
"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\Git_is1";
const SUBKEY_64_BIT: &'static str =
"SOFTWARE\\Wow6432Node\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\Git_is1";
try_git_with_no_path("which")
.or_else(|| try_git_with_no_path("where"))
.or_else(|| try_full_path_to_git(HKEY_LOCAL_MACHINE, SUBKEY_RECENT, "InstallPath"))
.or_else(|| try_full_path_to_git(HKEY_CURRENT_USER, SUBKEY_32_BIT, "InstallLocation"))
.or_else(|| try_full_path_to_git(HKEY_CURRENT_USER, SUBKEY_64_BIT, "InstallLocation"))
.or_else(|| try_full_path_to_git(HKEY_LOCAL_MACHINE, SUBKEY_32_BIT, "InstallLocation"))
.or_else(|| try_full_path_to_git(HKEY_LOCAL_MACHINE, SUBKEY_64_BIT, "InstallLocation"))
}
}
#[cfg(not(windows))]
mod find_git {
pub fn git_path() -> Option<::std::path::PathBuf> { super::try_git_with_no_path("which") }
}
pub use find_git::git_path;