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Fix some issues with getting tar header fields; Add some doc tests in

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tar module; Add some tests for version checks;
This commit is contained in:
Nathan Fisher 2023-04-08 19:10:30 -04:00
parent acbdf2d992
commit 32b4f80715
3 changed files with 117 additions and 51 deletions
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142
src/tar/header.rs
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@ -117,25 +117,45 @@ impl Default for Header {
}
impl Header {
/// Gets the filename of this archive member
///
/// # Example
/// ```
/// use hpk_package::tar::Header;
///
/// let header = Header::new("test/1.txt").unwrap();
/// let filename = header.filename().unwrap();
/// assert_eq!(filename.as_str(), "1.txt");
/// ```
pub fn filename(&self) -> Result<String, fmt::Error> {
let mut s = String::new();
for c in self.fname {
if c != b'\0' {
write!(s, "{c}")?;
} else {
if c == 0 {
break;
} else {
write!(s, "{}", char::from(c))?;
}
}
Ok(s)
}
/// Gets the Unix mode of this archive member
///
/// # Example
/// ```
/// use hpk_package::tar::Header;
///
/// let header = Header::new("test/1.txt").unwrap();
/// let mode = header.mode().unwrap();
/// assert_eq!(mode, 420);
/// ```
pub fn mode(&self) -> Result<u32, Error> {
let mut s = String::new();
for c in self.mode {
if c != b'\0' {
write!(s, "{c}")?;
} else {
if c == 0 {
break;
} else {
write!(s, "{}", char::from(c))?;
}
}
let mode = u32::from_str_radix(&s, 8)?;
@ -145,10 +165,10 @@ impl Header {
fn uid(&self) -> Result<u32, Error> {
let mut s = String::new();
for c in self.mode {
if c != b'\0' {
write!(s, "{c}")?;
} else {
if c == 0 {
break;
} else {
write!(s, "{}", char::from(c))?;
}
}
let uid = u32::from_str_radix(&s, 8)?;
@ -158,10 +178,10 @@ impl Header {
fn gid(&self) -> Result<u32, Error> {
let mut s = String::new();
for c in self.mode {
if c != b'\0' {
write!(s, "{c}")?;
} else {
if c == 0 {
break;
} else {
write!(s, "{}", char::from(c))?;
}
}
let gid = u32::from_str_radix(&s, 8)?;
@ -171,10 +191,10 @@ impl Header {
fn username(&self) -> Result<String, fmt::Error> {
let mut s = String::new();
for c in self.username {
if c != b'\0' {
write!(s, "{c}")?;
} else {
if c == 0 {
break;
} else {
write!(s, "{}", char::from(c))?;
}
}
Ok(s)
@ -183,10 +203,10 @@ impl Header {
fn groupname(&self) -> Result<String, fmt::Error> {
let mut s = String::new();
for c in self.groupname {
if c != b'\0' {
write!(s, "{c}")?;
} else {
if c == 0 {
break;
} else {
write!(s, "{}", char::from(c))?;
}
}
Ok(s)
@ -205,25 +225,61 @@ impl Header {
})
}
pub fn prefix(&self) -> Result<String, fmt::Error> {
/// Gets the path to the file minus it's final component
///
/// # Example
/// ```
/// use hpk_package::tar::Header;
///
/// let header = Header::new("test/1.txt").unwrap();
/// let prefix = header.prefix().unwrap();
/// assert_eq!(prefix.as_str(), "test");
/// ```
pub fn prefix(&self) -> Option<String> {
let mut s = String::new();
for c in self.file_prefix {
if c != b'\0' {
write!(s, "{c}")?;
if c != 0 {
write!(s, "{}", char::from(c)).ok()?;
} else {
break;
}
}
Ok(s)
if s.is_empty() {
None
} else {
Some(s)
}
}
/// Gets the full file path to this archive member.
///
/// # Example
///
/// ```
/// use hpk_package::tar::Header;
/// use std::path::PathBuf;
///
/// let header = Header::new("test/1.txt").unwrap();
/// let path = header.file_path().unwrap();
/// assert_eq!(PathBuf::from("test/1.txt"), path);
/// ```
pub fn file_path(&self) -> Result<PathBuf, fmt::Error> {
let mut path = match self.prefix() {
Some(p) => PathBuf::from(&p),
None => PathBuf::new(),
};
let name = self.filename()?;
path.push(&name);
Ok(path)
}
pub fn new(filename: &str) -> Result<Self, Error> {
let mut header = Header::default();
let meta = fs::symlink_metadata(filename)?;
let (filename, prefix) = if filename.len() < 100 {
(filename.to_string(), None)
} else {
// Deal with file names longer than 100 bytes
let (filename, prefix) = {
// Original tar has a maximum file name length of 100 bytes. The ustar
// revision allows storing the path prefix separately, with 100 bytes
// reserved for the file name and 150 bytes for the rest of the path.
let path = PathBuf::from(&filename);
let name = match path.file_name().and_then(|n| n.to_str()) {
Some(n) => n.to_string(),
@ -234,16 +290,8 @@ impl Header {
)))
}
};
let dir = match path.parent() {
Some(d) => d,
None => {
return Err(Error::Io(io::Error::new(
io::ErrorKind::Other,
"Cannot get path prefix",
)))
}
};
(name, Some(format!("{}", dir.display())))
let dir = path.parent().map(|x| format!("{}", x.display()));
(name, dir)
};
/* Fill in metadata */
@ -293,10 +341,10 @@ impl Header {
owner: Option<Owner>,
) -> Result<Self, Error> {
let mut header = Header::default();
let (filename, prefix) = if filename.len() < 100 {
(filename.to_string(), None)
} else {
// Deal with file names longer than 100 bytes
let (filename, prefix) = {
// Original tar has a maximum file name length of 100 bytes. The ustar
// revision allows storing the path prefix separately, with 100 bytes
// reserved for the file name and 150 bytes for the rest of the path.
let path = PathBuf::from(&filename);
let name = match path.file_name().and_then(|n| n.to_str()) {
Some(n) => n.to_string(),
@ -307,16 +355,8 @@ impl Header {
)))
}
};
let dir = match path.parent() {
Some(d) => d,
None => {
return Err(Error::Io(io::Error::new(
io::ErrorKind::Other,
"Cannot get path prefix",
)))
}
};
(name, Some(format!("{}", dir.display())))
let dir = path.parent().map(|x| format!("{}", x.display()));
(name, dir)
};
header.fname[..filename.len()].copy_from_slice(filename.as_bytes());
let mode = format!("{:07o}", meta.st_mode());
@ -431,7 +471,7 @@ fn get_username_for_uid<'a>(uid: u32) -> Result<&'a str, std::str::Utf8Error> {
user.to_str()
}
pub fn get_groupname_for_gid<'a>(gid: u32) -> Result<&'a str, std::str::Utf8Error> {
fn get_groupname_for_gid<'a>(gid: u32) -> Result<&'a str, std::str::Utf8Error> {
let group = unsafe {
let gr = libc::getgrgid(gid);
let name = (*gr).gr_name;

26
src/version/rapid.rs
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@ -165,4 +165,30 @@ mod test {
})
);
}
#[test]
fn rapid_num_eq() {
let rapid = Rapid { major: 42, minor: 0 };
assert_eq!(rapid, 42);
}
#[test]
fn rapid_num_gt() {
let rapid = Rapid { major: 1, minor: 42 };
assert!(rapid > 1);
}
#[test]
fn rapid_semver_eq() {
let rapid = Rapid { major: 42, minor: 69 };
let semver = SemVer { major: 42, minor: 69, patch: 0 };
assert_eq!(rapid, semver);
}
#[test]
fn rapid_semver_lt() {
let rapid = Rapid { major: 42, minor: 69 };
let semver = SemVer { major: 42, minor: 69, patch: 1 };
assert!(rapid < semver);
}
}

BIN
test/2.tar
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