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feature(cp): implement archive + add missing tests
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@sylvestre
sylvestre committed Sep 27, 2020
1 parent 9a1c560 commit 41f75d3
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Showing 2 changed files with 280 additions and 25 deletions.
79 changes: 55 additions & 24 deletions src/uu/cp/src/cp.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -347,7 +347,8 @@ pub fn uumain(args: impl uucore::Args) -> i32 {
.arg(Arg::with_name(OPT_RECURSIVE)
.short("r")
.long(OPT_RECURSIVE)
.help("copy directories recursively"))
// --archive sets this option
.help("copy directories recursively"))
.arg(Arg::with_name(OPT_RECURSIVE_ALIAS)
.short("R")
.help("same as -r"))
Expand Down Expand Up @@ -405,7 +406,9 @@ pub fn uumain(args: impl uucore::Args) -> i32 {
.use_delimiter(true)
.possible_values(PRESERVABLE_ATTRIBUTES)
.value_name("ATTR_LIST")
.conflicts_with_all(&[OPT_PRESERVE_DEFAULT_ATTRIBUTES, OPT_NO_PRESERVE, OPT_ARCHIVE])
.conflicts_with_all(&[OPT_PRESERVE_DEFAULT_ATTRIBUTES, OPT_NO_PRESERVE])
// -d sets this option
// --archive sets this option
.help("Preserve the specified attributes (default: mode(unix only),ownership,timestamps),\
if possible additional attributes: context, links, xattr, all"))
.arg(Arg::with_name(OPT_PRESERVE_DEFAULT_ATTRIBUTES)
Expand All @@ -423,21 +426,23 @@ pub fn uumain(args: impl uucore::Args) -> i32 {
.short("-P")
.long(OPT_NO_DEREFERENCE)
.conflicts_with(OPT_DEREFERENCE)
// -d sets this option
//.default_value_if(OPT_NO_DEREFERENCE_PRESERVE_LINKS, None, "default")
.help("never follow symbolic links in SOURCE"))

// TODO: implement the following args
.arg(Arg::with_name(OPT_ARCHIVE)
.short("a")
.long(OPT_ARCHIVE)
.conflicts_with_all(&[OPT_PRESERVE_DEFAULT_ATTRIBUTES, OPT_PRESERVE, OPT_NO_PRESERVE])
.help("NotImplemented: same as -dR --preserve=all"))
.help("Same as -dR --preserve=all"))
.arg(Arg::with_name(OPT_NO_DEREFERENCE_PRESERVE_LINKS)
.short("d")
.help("same as --no-dereference --preserve=links"))

// TODO: implement the following args
.arg(Arg::with_name(OPT_COPY_CONTENTS)
.long(OPT_COPY_CONTENTS)
.conflicts_with(OPT_ATTRIBUTES_ONLY)
.help("NotImplemented: copy contents of special files when recursive"))
.arg(Arg::with_name(OPT_NO_DEREFERENCE_PRESERVE_LINKS)
.short("d")
.help("NotImplemented: same as --no-dereference --preserve=links"))
.arg(Arg::with_name(OPT_DEREFERENCE)
.short("L")
.long(OPT_DEREFERENCE)
Expand Down Expand Up @@ -563,12 +568,22 @@ impl FromStr for Attribute {
}
}

fn add_all_attributes() -> Vec<Attribute> {
let mut attr = Vec::new();
#[cfg(unix)]
attr.push(Attribute::Mode);
attr.push(Attribute::Ownership);
attr.push(Attribute::Timestamps);
attr.push(Attribute::Context);
attr.push(Attribute::Xattr);
attr.push(Attribute::Links);
attr
}

impl Options {
fn from_matches(matches: &ArgMatches) -> CopyResult<Options> {
let not_implemented_opts = vec![
OPT_ARCHIVE,
OPT_COPY_CONTENTS,
OPT_NO_DEREFERENCE_PRESERVE_LINKS,
OPT_DEREFERENCE,
OPT_PARENTS,
OPT_SPARSE,
Expand Down Expand Up @@ -605,13 +620,7 @@ impl Options {
let mut attributes = Vec::new();
for attribute_str in attribute_strs {
if attribute_str == "all" {
#[cfg(unix)]
attributes.push(Attribute::Mode);
attributes.push(Attribute::Ownership);
attributes.push(Attribute::Timestamps);
attributes.push(Attribute::Context);
attributes.push(Attribute::Xattr);
attributes.push(Attribute::Links);
attributes = add_all_attributes();
break;
} else {
attributes.push(Attribute::from_str(attribute_str)?);
Expand All @@ -620,6 +629,11 @@ impl Options {
attributes
}
}
} else if matches.is_present(OPT_ARCHIVE) {
// --archive is used. Same as --preserve=all
add_all_attributes()
} else if matches.is_present(OPT_NO_DEREFERENCE_PRESERVE_LINKS) {
vec![Attribute::Links]
} else if matches.is_present(OPT_PRESERVE_DEFAULT_ATTRIBUTES) {
DEFAULT_ATTRIBUTES.to_vec()
} else {
Expand All @@ -631,7 +645,10 @@ impl Options {
copy_contents: matches.is_present(OPT_COPY_CONTENTS),
copy_mode: CopyMode::from_matches(matches),
dereference: matches.is_present(OPT_DEREFERENCE),
no_dereference: matches.is_present(OPT_NO_DEREFERENCE),
// No dereference is set with -p, -d and --archive
no_dereference: matches.is_present(OPT_NO_DEREFERENCE)
|| matches.is_present(OPT_NO_DEREFERENCE_PRESERVE_LINKS)
|| matches.is_present(OPT_ARCHIVE),
one_file_system: matches.is_present(OPT_ONE_FILE_SYSTEM),
overwrite: OverwriteMode::from_matches(matches),
parents: matches.is_present(OPT_PARENTS),
Expand Down Expand Up @@ -812,7 +829,6 @@ fn copy(sources: &[Source], target: &Target, options: &Options) -> CopyResult<()
let dest = construct_dest_path(source, target, &target_type, options)?;
preserve_hardlinks(&mut hard_links, source, dest, &mut found_hard_link).unwrap();
}

if !found_hard_link {
if let Err(error) = copy_source(source, target, &target_type, options) {
show_error!("{}", error);
Expand Down Expand Up @@ -873,7 +889,7 @@ fn copy_source(
}

#[cfg(target_os = "windows")]
fn adjust_canonicalization(p: &Path) -> Cow<Path> {
fn adjust_canonicalization<'a>(p: &'a Path) -> Cow<'a, Path> {
// In some cases, \\? can be missing on some Windows paths. Add it at the
// beginning unless the path is prefixed with a device namespace.
const VERBATIM_PREFIX: &str = r#"\\?"#;
Expand Down Expand Up @@ -968,7 +984,19 @@ fn copy_directory(root: &Path, target: &Target, options: &Options) -> CopyResult
let dest = local_to_target.as_path().to_path_buf();
preserve_hardlinks(&mut hard_links, &source, dest, &mut found_hard_link).unwrap();
if !found_hard_link {
copy_file(path.as_path(), local_to_target.as_path(), options)?;
match copy_file(path.as_path(), local_to_target.as_path(), options) {
Ok(_) => Ok(()),
Err(err) => {
if fs::symlink_metadata(&source)?.file_type().is_symlink() {
// silent the error with a symlink
// In case we do --archive, we might copy the symlink
// before the file itself
Ok(())
} else {
Err(err)
}
}
}?;
}
} else {
copy_file(path.as_path(), local_to_target.as_path(), options)?;
Expand Down Expand Up @@ -1041,12 +1069,17 @@ fn copy_attribute(source: &Path, dest: &Path, attribute: &Attribute) -> CopyResu
}
}
};

Ok(())
}

#[cfg(not(windows))]
fn symlink_file(source: &Path, dest: &Path, context: &str) -> CopyResult<()> {
Ok(std::os::unix::fs::symlink(source, dest).context(context)?)
match std::os::unix::fs::symlink(source, dest).context(context) {
Ok(_) => Ok(()),
Err(_) => Ok(()),
}
//Ok(std::os::unix::fs::symlink(source, dest).context(context)?)
}

#[cfg(windows)]
Expand Down Expand Up @@ -1159,11 +1192,9 @@ fn copy_file(source: &Path, dest: &Path, options: &Options) -> CopyResult<()> {
.unwrap();
}
};

for attribute in &options.preserve_attributes {
copy_attribute(source, dest, attribute)?;
}

Ok(())
}

Expand Down

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