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os: make os.ls('') return an error, make os.walk_ext more memory efficient on deep hierarchies, add tests for os.walk_ext

This commit is contained in:
Delyan Angelov 2021-10-24 18:38:44 +03:00
parent d9c6c9a7df
commit d1c4b470bc
No known key found for this signature in database
GPG Key ID: 66886C0F12D595ED
4 changed files with 103 additions and 38 deletions

View File

@ -449,11 +449,16 @@ pub fn join_path(base string, dirs ...string) string {
// walk_ext returns a recursive list of all files in `path` ending with `ext`.
pub fn walk_ext(path string, ext string) []string {
if !is_dir(path) {
return []
}
mut files := ls(path) or { return [] }
mut res := []string{}
impl_walk_ext(path, ext, mut res)
return res
}
pub fn impl_walk_ext(path string, ext string, mut out []string) {
if !is_dir(path) {
return
}
mut files := ls(path) or { return }
separator := if path.ends_with(path_separator) { '' } else { path_separator }
for file in files {
if file.starts_with('.') {
@ -461,12 +466,11 @@ pub fn walk_ext(path string, ext string) []string {
}
p := path + separator + file
if is_dir(p) && !is_link(p) {
res << walk_ext(p, ext)
impl_walk_ext(p, ext, mut out)
} else if file.ends_with(ext) {
res << p
out << p
}
}
return res
}
// walk recursively traverses the given directory `path`.

View File

@ -254,6 +254,9 @@ fn init_os_args(argc int, argv &&byte) []string {
}
pub fn ls(path string) ?[]string {
if path.len == 0 {
return error('ls() expects a folder, not an empty string')
}
mut res := []string{}
dir := unsafe { C.opendir(&char(path.str)) }
if isnil(dir) {

View File

@ -84,12 +84,22 @@ fn test_open_file_binary() {
// assert line1 == 'line 1\n'
// assert line2 == 'line 2'
// }
fn test_create_file() {
fn create_file(fpath string) ? {
mut f := os.create(fpath) ?
f.close()
}
fn create_and_write_to_file(fpath string, content string) ? {
mut f := os.create(fpath) ?
f.write_string(content) ?
f.close()
}
fn test_create_file() ? {
filename := './test1.txt'
hello := 'hello world!'
mut f := os.create(filename) or { panic(err) }
f.write_string(hello) or { panic(err) }
f.close()
create_and_write_to_file(filename, hello) ?
assert hello.len == os.file_size(filename)
os.rm(filename) or { panic(err) }
}
@ -175,6 +185,61 @@ fn test_write_and_read_bytes() {
os.rm(file_name) or { panic(err) }
}
fn test_ls() {
if x := os.ls('') {
assert false
} else {
assert true
}
if x := os.ls('.') {
assert x.len > 0
dump(x)
} else {
assert false
}
}
fn test_walk_ext() ? {
os.mkdir_all('myfolder/f1/f2/f3') ?
os.mkdir_all('myfolder/a1/a2/a3') ?
create_file('myfolder/f1/f2/f3/a.txt') ?
create_file('myfolder/f1/f2/f3/b.txt') ?
create_file('myfolder/f1/f2/f3/c.txt') ?
create_file('myfolder/f1/f2/f3/d.md') ?
create_file('myfolder/f1/0.txt') ?
create_file('myfolder/another.md') ?
create_file('myfolder/a1/a2/a3/x.txt') ?
create_file('myfolder/a1/a2/a3/y.txt') ?
create_file('myfolder/a1/a2/a3/z.txt') ?
create_file('myfolder/a1/1.txt') ?
create_file('myfolder/xyz.ini') ?
all := os.walk_ext('.', '')
assert all.len > 10
mut top := os.walk_ext('myfolder', '.txt')
top.sort()
assert top == [
'myfolder/a1/1.txt',
'myfolder/a1/a2/a3/x.txt',
'myfolder/a1/a2/a3/y.txt',
'myfolder/a1/a2/a3/z.txt',
'myfolder/f1/0.txt',
'myfolder/f1/f2/f3/a.txt',
'myfolder/f1/f2/f3/b.txt',
'myfolder/f1/f2/f3/c.txt',
]
mut subfolder_txts := os.walk_ext('myfolder/a1/a2', '.txt')
subfolder_txts.sort()
assert subfolder_txts == [
'myfolder/a1/a2/a3/x.txt',
'myfolder/a1/a2/a3/y.txt',
'myfolder/a1/a2/a3/z.txt',
]
mut mds := os.walk_ext('myfolder', '.md')
mds.sort()
assert mds == ['myfolder/another.md', 'myfolder/f1/f2/f3/d.md']
os.rmdir_all('myfolder') ?
}
fn test_create_and_delete_folder() {
folder := './test1'
os.mkdir(folder) or { panic(err) }
@ -346,8 +411,7 @@ fn test_realpath_does_not_absolutize_non_existing_relative_paths() {
fn test_realpath_absolutepath_symlink() ? {
file_name := 'tolink_file.txt'
symlink_name := 'symlink.txt'
mut f := os.create(file_name) ?
f.close()
create_file(file_name) ?
assert os.symlink(file_name, symlink_name) ?
rpath := os.real_path(symlink_name)
println(rpath)
@ -406,13 +470,12 @@ fn test_make_symlink_check_is_link_and_remove_symlink() {
assert symlink_exists == false
}
fn test_make_symlink_check_is_link_and_remove_symlink_with_file() {
fn test_make_symlink_check_is_link_and_remove_symlink_with_file() ? {
file := 'tfile'
symlink := 'tsymlink'
os.rm(symlink) or {}
os.rm(file) or {}
mut f := os.create(file) or { panic(err) }
f.close()
create_file(file) ?
os.symlink(file, symlink) or { panic(err) }
assert os.is_link(symlink)
os.rm(symlink) or { panic(err) }
@ -421,13 +484,12 @@ fn test_make_symlink_check_is_link_and_remove_symlink_with_file() {
assert symlink_exists == false
}
fn test_make_hardlink_check_is_link_and_remove_hardlink_with_file() {
fn test_make_hardlink_check_is_link_and_remove_hardlink_with_file() ? {
file := 'tfile'
symlink := 'tsymlink'
os.rm(symlink) or {}
os.rm(file) or {}
mut f := os.create(file) or { panic(err) }
f.close()
create_file(file) ?
os.link(file, symlink) or { panic(err) }
assert os.exists(symlink)
os.rm(symlink) or { panic(err) }
@ -470,13 +532,9 @@ fn test_symlink() {
}
}
fn test_is_executable_writable_readable() {
fn test_is_executable_writable_readable() ? {
file_name := 'rwxfile.exe'
mut f := os.create(file_name) or {
eprintln('failed to create file $file_name')
return
}
f.close()
create_file(file_name) ?
$if !windows {
os.chmod(file_name, 0o600) or {} // mark as readable && writable, but NOT executable
assert os.is_writable(file_name)
@ -634,12 +692,12 @@ cmd.close()
*/
}
fn test_posix_set_bit() {
fn test_posix_set_bit() ? {
$if windows {
assert true
} $else {
fpath := '/tmp/permtest'
os.create(fpath) or { panic("Couldn't create file") }
fpath := 'permtest'
create_file(fpath) ?
os.chmod(fpath, 0o0777) or { panic(err) }
c_fpath := &char(fpath.str)
mut s := C.stat{}
@ -694,11 +752,11 @@ fn test_exists_in_system_path() {
assert os.exists_in_system_path('ls')
}
fn test_truncate() {
fn test_truncate() ? {
filename := './test_trunc.txt'
hello := 'hello world!'
mut f := os.create(filename) or { panic(err) }
f.write_string(hello) or { panic(err) }
mut f := os.create(filename) ?
f.write_string(hello) ?
f.close()
assert hello.len == os.file_size(filename)
newlen := u64(40000)
@ -711,17 +769,14 @@ fn test_hostname() {
assert os.hostname().len > 2
}
fn test_glob() {
fn test_glob() ? {
os.mkdir('test_dir') or { panic(err) }
for i in 0 .. 4 {
if i == 3 {
mut f := os.create('test_dir/test0_another') or { panic(err) }
f.close()
mut f1 := os.create('test_dir/test') or { panic(err) }
f1.close()
create_file('test_dir/test0_another') ?
create_file('test_dir/test') ?
} else {
mut f := os.create('test_dir/test' + i.str()) or { panic(err) }
f.close()
create_file('test_dir/test' + i.str()) ?
}
}
files := os.glob('test_dir/t*') or { panic(err) }

View File

@ -153,6 +153,9 @@ pub fn utime(path string, actime int, modtime int) ? {
}
pub fn ls(path string) ?[]string {
if path.len == 0 {
return error('ls() expects a folder, not an empty string')
}
mut find_file_data := Win32finddata{}
mut dir_files := []string{}
// We can also check if the handle is valid. but using is_dir instead