rust/src/lib/fs.rs

75 lines
2.0 KiB
Rust
Raw Normal View History

import os::getcwd;
import os_fs;
import str;
native "rust" mod rustrt {
2011-07-27 07:19:39 -05:00
fn rust_file_is_dir(path: str) -> int;
}
fn path_sep() -> str { ret str::from_char(os_fs::path_sep); }
type path = str;
2011-07-27 07:19:39 -05:00
fn dirname(p: path) -> path {
let i: int = str::rindex(p, os_fs::path_sep as u8);
if i == -1 {
i = str::rindex(p, os_fs::alt_path_sep as u8);
2011-07-27 07:19:39 -05:00
if i == -1 { ret "."; }
}
ret str::substr(p, 0u, i as uint);
}
2011-07-27 07:19:39 -05:00
fn basename(p: path) -> path {
let i: int = str::rindex(p, os_fs::path_sep as u8);
if i == -1 {
i = str::rindex(p, os_fs::alt_path_sep as u8);
2011-07-27 07:19:39 -05:00
if i == -1 { ret p; }
}
2011-07-27 07:19:39 -05:00
let len = str::byte_len(p);
if i + 1 as uint >= len { ret p; }
ret str::slice(p, i + 1 as uint, len);
}
// FIXME: Need some typestate to avoid bounds check when len(pre) == 0
2011-07-27 07:19:39 -05:00
fn connect(pre: path, post: path) -> path {
let len = str::byte_len(pre);
ret if pre.(len - 1u) == os_fs::path_sep as u8 {
2011-06-16 18:55:46 -05:00
// Trailing '/'?
pre + post
} else { pre + path_sep() + post };
}
2011-07-27 07:19:39 -05:00
fn file_is_dir(p: path) -> bool { ret rustrt::rust_file_is_dir(p) != 0; }
fn list_dir(p: path) -> [str] {
2011-07-27 07:19:39 -05:00
let pl = str::byte_len(p);
if pl == 0u || p.(pl - 1u) as char != os_fs::path_sep { p += path_sep(); }
let full_paths: [str] = ~[];
for filename: str in os_fs::list_dir(p) {
2011-07-27 07:19:39 -05:00
if !str::eq(filename, ".") {
if !str::eq(filename, "..") { full_paths += ~[p + filename]; }
}
}
ret full_paths;
}
2011-07-27 07:19:39 -05:00
fn path_is_absolute(p: path) -> bool { ret os_fs::path_is_absolute(p); }
// FIXME: under Windows, we should prepend the current drive letter to paths
// that start with a slash.
2011-07-27 07:19:39 -05:00
fn make_absolute(p: path) -> path {
if path_is_absolute(p) { ret p; } else { ret connect(getcwd(), p); }
}
// Local Variables:
// mode: rust;
// fill-column: 78;
// indent-tabs-mode: nil
// c-basic-offset: 4
// buffer-file-coding-system: utf-8-unix
// compile-command: "make -k -C $RBUILD 2>&1 | sed -e 's/\\/x\\//x:\\//g'";
// End: