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use std::env;
use std::fs;
use std::path::{Path, PathBuf};
use util::{CargoResult, human, ChainError};
pub fn find_project(pwd: &Path, file: &str) -> CargoResult<PathBuf> {
find_project_manifest(pwd, file).map(|mut p| {
p.pop();
p
})
}
pub fn find_project_manifest(pwd: &Path, file: &str) -> CargoResult<PathBuf> {
let mut current = pwd;
loop {
let manifest = current.join(file);
if fs::metadata(&manifest).is_ok() {
return Ok(manifest)
}
match current.parent() {
Some(p) => current = p,
None => break,
}
}
Err(human(format!("Could not find `{}` in `{}` or any parent directory",
file, pwd.display())))
}
pub fn find_root_manifest_for_cwd(manifest_path: Option<String>)
-> CargoResult<PathBuf> {
let cwd = try!(env::current_dir().chain_error(|| {
human("Couldn't determine the current working directory")
}));
match manifest_path {
Some(path) => {
let absolute_path = cwd.join(&path);
if !absolute_path.ends_with("Cargo.toml") {
return Err(human("the manifest-path must be a path to a Cargo.toml file"))
}
if !fs::metadata(&absolute_path).is_ok() {
return Err(human(format!("manifest path `{}` does not exist", path)))
}
Ok(absolute_path)
},
None => find_project_manifest(&cwd, "Cargo.toml"),
}
}
pub fn find_project_manifest_exact(pwd: &Path, file: &str) -> CargoResult<PathBuf> {
let manifest = pwd.join(file);
if fs::metadata(&manifest).is_ok() {
Ok(manifest)
} else {
Err(human(format!("Could not find `{}` in `{}`",
file, pwd.display())))
}
}