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use std::convert::{TryFrom, TryInto};
use ::regex::Regex;
use super::*;
lazy_static! {
static ref RELIST: Regex = Regex::new(
r"(?x)
^(?P<type>[bcdelfmpSs-])
(?P<permission>((r|-)(w|-)([xsStTL-]))((r|-)(w|-)([xsStTL-]))((r|-)(w|-)([xsStTL-])))
(?P<acl>([\+|@]))?\s+
(?P<inodes>\d+)\s+
(?P<owner>\d+|[A-Z]{1}\w+\s+[A-Z]{1}\w+|\w+|\S+)\s+
(?P<group>\d+|[A-Z]{1}[\w\\]+\s+[A-Z]{1}\w+|\w+|\S+)\s+
(?P<size>\d+(?:,\s*\d*)?)\s+
(?P<timestamp>((?P<month1>\w{3})\s+
(?P<date1>\d{1,2})\s+
(?P<hour>\d{1,2}):(?P<minute>\d{2}))|
((?P<month2>\w{3})\s+
(?P<date2>\d{1,2})\s+
(?P<year>\d{4})))\s+
(?P<name>.+)$
"
)
.unwrap();
}
/// Represents entry from Unix-like FTP server.
#[derive(Debug)]
pub struct FtpEntryUnix {
kind: FtpEntryKind,
name: String,
size: usize,
// pub date: NaiveDateTime,
date_str: String,
/// For symlink entries, this is the symlink's target.
pub target: Option<String>,
/// True if the sticky bit is set for this entry.
pub sticky: bool,
/// The various permissions for this entry.
pub permissions: FtpEntryPermissions,
/// Marks extra ACL permission for this entry.
pub acl: bool,
/// The user name or ID that this entry belongs to.
pub owner: String,
/// The group name or ID that this entry belongs to.
pub group: String,
pub pointer: Option<String>,
}
impl FtpEntryUnix {
/// Represents parsed string as entry of an Unix-type FTP server.
pub fn new(string: &str) -> Option<Self> {
FtpEntryUnix::try_from(string).ok()
}
}
impl FtpEntryInfo for FtpEntryUnix {
fn kind(&self) -> FtpEntryKind {
self.kind
}
fn name(&self) -> &str {
&self.name
}
fn size(&self) -> usize {
self.size
}
// fn date(&self) -> NaiveDateTime {
// self.date
// }
fn date_str(&self) -> &str {
&self.date_str
}
}
impl TryFrom<&str> for FtpEntryUnix {
type Error = ();
fn try_from(value: &str) -> Result<Self, Self::Error> {
if let Some(caps) = RELIST.captures(&value) {
let kind: FtpEntryKind = caps
.name("type")
.ok_or("this is not a list unix format")
.map_or_else(|_| Err(()), |v| v.as_str().try_into().map_err(|_| ()))?;
let (sticky, permissions) = caps
.name("permission")
.ok_or("this is not a list unix format")
.map_or_else(
|_| Err(()),
|v| {
let mut permission = v.as_str().to_string();
Ok((
match permission.chars().last() {
Some(t) if t == 't' || t == 'T' => {
permission.pop();
permission.push(if t == 't' { 'x' } else { '-' });
true
}
_ => false,
},
permission,
))
},
)?;
let acl = caps.name("acl").map(|v| v.as_str() == "+").unwrap_or(false);
let owner = caps.name("owner").unwrap().as_str().to_string();
let group = caps.name("group").unwrap().as_str().to_string();
let (size, pointer) = caps.name("size").map_or((0, None), |v| {
if v.as_str().chars().any(|c| c == ',') {
(
0,
Some(v.as_str().chars().filter(|c| !c.is_whitespace()).collect()),
)
} else {
(v.as_str().parse().unwrap_or(0), None)
}
});
let date_str = caps
.name("timestamp")
.unwrap()
.as_str()
.split_whitespace()
.collect::<Vec<_>>()
.join(" ");
// let date = None
// .or_else(|| {
// let date = vec![
// caps.name("month1"),
// caps.name("date1"),
// caps.name("hour"),
// caps.name("minute"),
// ];
// let date = if date.iter().any(|m| m.is_none()) {
// return None;
// } else {
// date.iter().map(|m| m.unwrap().as_str()).collect::<Vec<_>>()
// };
// let now = ::chrono::Utc::now();
// let year = format!("{}", now.format("%Y"));
// let date = format!("{}-{}-{}T{}:{}", year, date[0], date[1], date[2], date[3]);
// let date = match NaiveDateTime::parse_from_str(&date, "%Y-%b-%_dT%_H:%_M") {
// Ok(mut date) => {
// // If the date is in the past but no more than 6 months old, year
// // isn't displayed and doesn't have to be the current year.
// //
// // If the date is in the future (less than an hour from now), year
// // isn't displayed and doesn't have to be the current year.
// // That second case is much more rare than the first and less annoying.
// // It's impossible to fix without knowing about the server's timezone,
// // so we just don't do anything about it.
// //
// // If we're here with a time that is more than 28 hours into the
// // future (1 hour + maximum timezone offset which is 27 hours),
// // there is a problem -- we should be in the second conditional block
// if date.timestamp() - now.timestamp() > 100_800_000 {
// date = date.with_year(date.year() - 1).unwrap();
// }
// // If we're here with a time that is more than 6 months old, there's
// // a problem as well.
// // Maybe local & remote servers aren't on the same timezone (with remote
// // ahead of local)
// // For instance, remote is in 2014 while local is still in 2013. In
// // this case, a date like 01/01/13 02:23 could be detected instead of
// // 01/01/14 02:23
// // Our trigger point will be 3600*24*31*6 (since we already use 31
// // as an upper bound, no need to add the 27 hours timezone offset)
// if now.timestamp() - date.timestamp() > 16_070_400_000 {
// date = date.with_year(date.year() - 1).unwrap();
// }
// Some(date)
// }
// Err(_) => None,
// };
// date
// })
// .or_else(|| {
// let date = vec![caps.name("year"), caps.name("month2"), caps.name("date2")];
// let date = if date.iter().any(|m| m.is_none()) {
// return None;
// } else {
// date.iter().map(|m| m.unwrap().as_str()).collect::<Vec<_>>()
// };
// let date = format!("{}-{}-{}", date[0], date[1], date[2]);
// NaiveDate::parse_from_str(&date, "%Y-%b-%_d")
// .map(|date| date.and_hms(0, 0, 0))
// .ok()
// });
// let date = match date {
// Some(date) => date,
// _ => return Err(()),
// };
let (name, target) = {
let name = caps.name("name").unwrap().as_str();
if kind == FtpEntryKind::Symlink {
let mut s1 = name.split(" -> ");
(
s1.next().unwrap().to_string(),
s1.next().map(|v| v.to_string()),
)
} else {
(name.to_string(), None)
}
};
return Ok(Self {
kind,
name,
target,
sticky,
permissions: FtpEntryPermissions(permissions),
acl,
owner,
group,
size,
pointer,
date_str,
});
}
Err(())
}
}