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os: is_link()

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This commit is contained in:
Alexander Medvednikov 2019-12-04 23:53:11 +03:00
parent a57e29dfc5
commit 2144c162c4
3 changed files with 16 additions and 6 deletions
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1
vlib/builtin/cfns.v
View File

@ -50,6 +50,7 @@ fn C.chdir() int
fn C.fread() int
fn C.rewind() int
fn C.stat() int
fn C.lstat() int
fn C.rename() int
fn C.fgets() int
fn C.memset() int

1
vlib/os/const.v
View File

@ -19,6 +19,7 @@ const (
const (
S_IFMT = 0xF000 // type of file
S_IFDIR = 0x4000 // directory
S_IFLNK = 0xa000 // link
)
const(

20
vlib/os/os.v
View File

@ -735,7 +735,7 @@ pub fn write_file(path, text string) {
f.close()
}
// clear will clear current terminal screen.
// clear clears current terminal screen.
pub fn clear() {
$if !windows {
C.printf('\x1b[2J')
@ -838,25 +838,33 @@ pub fn is_dir(path string) bool {
$if windows {
_path := path.replace('/', '\\')
attr := C.GetFileAttributesW(_path.to_wide())
if int(attr) == int(C.INVALID_FILE_ATTRIBUTES) {
if int(attr) == C.INVALID_FILE_ATTRIBUTES {
return false
}
if (int(attr) & C.FILE_ATTRIBUTE_DIRECTORY) != 0 {
if int(attr) & C.FILE_ATTRIBUTE_DIRECTORY != 0 {
return true
}
return false
}
$else {
statbuf := C.stat{}
cstr := path.str
if C.stat(cstr, &statbuf) != 0 {
if C.stat(path.str, &statbuf) != 0 {
return false
}
// ref: https://code.woboq.org/gcc/include/sys/stat.h.html
return (int(statbuf.st_mode) & S_IFMT) == S_IFDIR
return int(statbuf.st_mode) & S_IFMT == S_IFDIR
}
}
// is_link returns a boolean indicating whether the given path is a link.
pub fn is_link(path string) bool {
statbuf := C.stat{}
if C.lstat(path.str, &statbuf) != 0 {
return false
}
return int(statbuf.st_mode) & S_IFMT == S_IFLNK
}
// chdir changes the current working directory to the new directory path.
pub fn chdir(path string) {
$if windows {