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cp: add support for --attributes-only.

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This commit is contained in:
Matt8898 2017-08-04 13:29:57 +02:00
parent ea43608ab8
commit 48ae9b64ba
1 changed files with 16 additions and 6 deletions
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22
src/cp/cp.rs
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@ -157,6 +157,7 @@ pub enum CopyMode {
Sparse,
Copy,
Update,
AttrOnly
}
#[derive(Clone)]
@ -343,6 +344,11 @@ pub fn uumain(args: Vec<String>) -> i32 {
.takes_value(true)
.value_name("WHEN")
.help("control clone/CoW copies. See below"))
.arg(Arg::with_name(OPT_ATTRIBUTES_ONLY)
.long(OPT_ATTRIBUTES_ONLY)
.conflicts_with(OPT_COPY_CONTENTS)
.overrides_with(OPT_REFLINK)
.help("Don't copy the file data, just the attributes"))
// TODO: implement the following args
.arg(Arg::with_name(OPT_ARCHIVE)
@ -350,11 +356,6 @@ pub fn uumain(args: Vec<String>) -> i32 {
.long(OPT_ARCHIVE)
.conflicts_with_all(&[OPT_PRESERVE_DEFUALT_ATTRIBUTES, OPT_PRESERVE, OPT_NO_PRESERVE])
.help("NotImplemented: same as -dR --preserve=all"))
.arg(Arg::with_name(OPT_ATTRIBUTES_ONLY)
.long(OPT_ATTRIBUTES_ONLY)
.conflicts_with(OPT_COPY_CONTENTS)
.overrides_with(OPT_REFLINK)
.help("NotImplemented: don't copy the file data, just the attributes"))
.arg(Arg::with_name(OPT_COPY_CONTENTS)
.long(OPT_COPY_CONTENTS)
.conflicts_with(OPT_ATTRIBUTES_ONLY)
@ -481,6 +482,8 @@ impl CopyMode {
CopyMode::Sparse
} else if matches.is_present(OPT_UPDATE) {
CopyMode::Update
} else if matches.is_present(OPT_ATTRIBUTES_ONLY) {
CopyMode::AttrOnly
} else {
CopyMode::Copy
}
@ -508,7 +511,6 @@ impl Options {
fn from_matches(matches: &ArgMatches) -> CopyResult<Options> {
let not_implemented_opts = vec![
OPT_ARCHIVE,
OPT_ATTRIBUTES_ONLY,
OPT_COPY_CONTENTS,
OPT_NO_DEREFERENCE_PRESERVE_LINKS,
OPT_DEREFERENCE,
@ -888,6 +890,14 @@ fn copy_file(source: &Path, dest: &Path, options: &Options) -> CopyResult<()> {
} else {
copy_helper(source, dest, options)?;
}
},
CopyMode::AttrOnly => {
let dst_file = OpenOptions::new()
.write(true)
.truncate(false)
.create(true)
.open(dest)
.unwrap();
}
};