|
|
// dirs_multiset.rs
|
|
|
//
|
|
|
// Copyright 2019 Raphaël Gomès <rgomes@octobus.net>
|
|
|
//
|
|
|
// This software may be used and distributed according to the terms of the
|
|
|
// GNU General Public License version 2 or any later version.
|
|
|
|
|
|
//! A multiset of directory names.
|
|
|
//!
|
|
|
//! Used to counts the references to directories in a manifest or dirstate.
|
|
|
use crate::utils::hg_path::{HgPath, HgPathBuf};
|
|
|
use crate::{
|
|
|
dirstate::EntryState, utils::files, DirstateEntry, DirstateMapError,
|
|
|
};
|
|
|
use std::collections::hash_map::{self, Entry};
|
|
|
use std::collections::HashMap;
|
|
|
|
|
|
// could be encapsulated if we care API stability more seriously
|
|
|
pub type DirsMultisetIter<'a> = hash_map::Keys<'a, HgPathBuf, u32>;
|
|
|
|
|
|
#[derive(PartialEq, Debug)]
|
|
|
pub struct DirsMultiset {
|
|
|
inner: HashMap<HgPathBuf, u32>,
|
|
|
}
|
|
|
|
|
|
impl DirsMultiset {
|
|
|
/// Initializes the multiset from a dirstate.
|
|
|
///
|
|
|
/// If `skip_state` is provided, skips dirstate entries with equal state.
|
|
|
pub fn from_dirstate(
|
|
|
vec: &HashMap<HgPathBuf, DirstateEntry>,
|
|
|
skip_state: Option<EntryState>,
|
|
|
) -> Self {
|
|
|
let mut multiset = DirsMultiset {
|
|
|
inner: HashMap::new(),
|
|
|
};
|
|
|
|
|
|
for (filename, DirstateEntry { state, .. }) in vec {
|
|
|
// This `if` is optimized out of the loop
|
|
|
if let Some(skip) = skip_state {
|
|
|
if skip != *state {
|
|
|
multiset.add_path(filename);
|
|
|
}
|
|
|
} else {
|
|
|
multiset.add_path(filename);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
multiset
|
|
|
}
|
|
|
|
|
|
/// Initializes the multiset from a manifest.
|
|
|
pub fn from_manifest(vec: &Vec<HgPathBuf>) -> Self {
|
|
|
let mut multiset = DirsMultiset {
|
|
|
inner: HashMap::new(),
|
|
|
};
|
|
|
|
|
|
for filename in vec {
|
|
|
multiset.add_path(filename);
|
|
|
}
|
|
|
|
|
|
multiset
|
|
|
}
|
|
|
|
|
|
/// Increases the count of deepest directory contained in the path.
|
|
|
///
|
|
|
/// If the directory is not yet in the map, adds its parents.
|
|
|
pub fn add_path(&mut self, path: &HgPath) {
|
|
|
for subpath in files::find_dirs(path) {
|
|
|
if let Some(val) = self.inner.get_mut(subpath) {
|
|
|
*val += 1;
|
|
|
break;
|
|
|
}
|
|
|
self.inner.insert(subpath.to_owned(), 1);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/// Decreases the count of deepest directory contained in the path.
|
|
|
///
|
|
|
/// If it is the only reference, decreases all parents until one is
|
|
|
/// removed.
|
|
|
/// If the directory is not in the map, something horrible has happened.
|
|
|
pub fn delete_path(
|
|
|
&mut self,
|
|
|
path: &HgPath,
|
|
|
) -> Result<(), DirstateMapError> {
|
|
|
for subpath in files::find_dirs(path) {
|
|
|
match self.inner.entry(subpath.to_owned()) {
|
|
|
Entry::Occupied(mut entry) => {
|
|
|
let val = entry.get().clone();
|
|
|
if val > 1 {
|
|
|
entry.insert(val - 1);
|
|
|
break;
|
|
|
}
|
|
|
entry.remove();
|
|
|
}
|
|
|
Entry::Vacant(_) => {
|
|
|
return Err(DirstateMapError::PathNotFound(
|
|
|
path.to_owned(),
|
|
|
))
|
|
|
}
|
|
|
};
|
|
|
}
|
|
|
|
|
|
Ok(())
|
|
|
}
|
|
|
|
|
|
pub fn contains(&self, key: &HgPath) -> bool {
|
|
|
self.inner.contains_key(key)
|
|
|
}
|
|
|
|
|
|
pub fn iter(&self) -> DirsMultisetIter {
|
|
|
self.inner.keys()
|
|
|
}
|
|
|
|
|
|
pub fn len(&self) -> usize {
|
|
|
self.inner.len()
|
|
|
}
|
|
|
}
|
|
|
|
|
|
#[cfg(test)]
|
|
|
mod tests {
|
|
|
use super::*;
|
|
|
use std::collections::HashMap;
|
|
|
|
|
|
#[test]
|
|
|
fn test_delete_path_path_not_found() {
|
|
|
let mut map = DirsMultiset::from_manifest(&vec![]);
|
|
|
let path = HgPathBuf::from_bytes(b"doesnotexist/");
|
|
|
assert_eq!(
|
|
|
Err(DirstateMapError::PathNotFound(path.to_owned())),
|
|
|
map.delete_path(&path)
|
|
|
);
|
|
|
}
|
|
|
|
|
|
#[test]
|
|
|
fn test_delete_path_empty_path() {
|
|
|
let mut map = DirsMultiset::from_manifest(&vec![HgPathBuf::new()]);
|
|
|
let path = HgPath::new(b"");
|
|
|
assert_eq!(Ok(()), map.delete_path(path));
|
|
|
assert_eq!(
|
|
|
Err(DirstateMapError::PathNotFound(path.to_owned())),
|
|
|
map.delete_path(path)
|
|
|
);
|
|
|
}
|
|
|
|
|
|
#[test]
|
|
|
fn test_delete_path_successful() {
|
|
|
let mut map = DirsMultiset {
|
|
|
inner: [("", 5), ("a", 3), ("a/b", 2), ("a/c", 1)]
|
|
|
.iter()
|
|
|
.map(|(k, v)| (HgPathBuf::from_bytes(k.as_bytes()), *v))
|
|
|
.collect(),
|
|
|
};
|
|
|
|
|
|
assert_eq!(Ok(()), map.delete_path(HgPath::new(b"a/b/")));
|
|
|
eprintln!("{:?}", map);
|
|
|
assert_eq!(Ok(()), map.delete_path(HgPath::new(b"a/b/")));
|
|
|
eprintln!("{:?}", map);
|
|
|
assert_eq!(
|
|
|
Err(DirstateMapError::PathNotFound(HgPathBuf::from_bytes(
|
|
|
b"a/b/"
|
|
|
))),
|
|
|
map.delete_path(HgPath::new(b"a/b/"))
|
|
|
);
|
|
|
|
|
|
assert_eq!(2, *map.inner.get(HgPath::new(b"a")).unwrap());
|
|
|
assert_eq!(1, *map.inner.get(HgPath::new(b"a/c")).unwrap());
|
|
|
eprintln!("{:?}", map);
|
|
|
assert_eq!(Ok(()), map.delete_path(HgPath::new(b"a/")));
|
|
|
eprintln!("{:?}", map);
|
|
|
|
|
|
assert_eq!(Ok(()), map.delete_path(HgPath::new(b"a/c/")));
|
|
|
assert_eq!(
|
|
|
Err(DirstateMapError::PathNotFound(HgPathBuf::from_bytes(
|
|
|
b"a/c/"
|
|
|
))),
|
|
|
map.delete_path(HgPath::new(b"a/c/"))
|
|
|
);
|
|
|
}
|
|
|
|
|
|
#[test]
|
|
|
fn test_add_path_empty_path() {
|
|
|
let mut map = DirsMultiset::from_manifest(&vec![]);
|
|
|
let path = HgPath::new(b"");
|
|
|
map.add_path(path);
|
|
|
|
|
|
assert_eq!(1, map.len());
|
|
|
}
|
|
|
|
|
|
#[test]
|
|
|
fn test_add_path_successful() {
|
|
|
let mut map = DirsMultiset::from_manifest(&vec![]);
|
|
|
|
|
|
map.add_path(HgPath::new(b"a/"));
|
|
|
assert_eq!(1, *map.inner.get(HgPath::new(b"a")).unwrap());
|
|
|
assert_eq!(1, *map.inner.get(HgPath::new(b"")).unwrap());
|
|
|
assert_eq!(2, map.len());
|
|
|
|
|
|
// Non directory should be ignored
|
|
|
map.add_path(HgPath::new(b"a"));
|
|
|
assert_eq!(1, *map.inner.get(HgPath::new(b"a")).unwrap());
|
|
|
assert_eq!(2, map.len());
|
|
|
|
|
|
// Non directory will still add its base
|
|
|
map.add_path(HgPath::new(b"a/b"));
|
|
|
assert_eq!(2, *map.inner.get(HgPath::new(b"a")).unwrap());
|
|
|
assert_eq!(2, map.len());
|
|
|
|
|
|
// Duplicate path works
|
|
|
map.add_path(HgPath::new(b"a/"));
|
|
|
assert_eq!(3, *map.inner.get(HgPath::new(b"a")).unwrap());
|
|
|
|
|
|
// Nested dir adds to its base
|
|
|
map.add_path(HgPath::new(b"a/b/"));
|
|
|
assert_eq!(4, *map.inner.get(HgPath::new(b"a")).unwrap());
|
|
|
assert_eq!(1, *map.inner.get(HgPath::new(b"a/b")).unwrap());
|
|
|
|
|
|
// but not its base's base, because it already existed
|
|
|
map.add_path(HgPath::new(b"a/b/c/"));
|
|
|
assert_eq!(4, *map.inner.get(HgPath::new(b"a")).unwrap());
|
|
|
assert_eq!(2, *map.inner.get(HgPath::new(b"a/b")).unwrap());
|
|
|
|
|
|
map.add_path(HgPath::new(b"a/c/"));
|
|
|
assert_eq!(1, *map.inner.get(HgPath::new(b"a/c")).unwrap());
|
|
|
|
|
|
let expected = DirsMultiset {
|
|
|
inner: [("", 2), ("a", 5), ("a/b", 2), ("a/b/c", 1), ("a/c", 1)]
|
|
|
.iter()
|
|
|
.map(|(k, v)| (HgPathBuf::from_bytes(k.as_bytes()), *v))
|
|
|
.collect(),
|
|
|
};
|
|
|
assert_eq!(map, expected);
|
|
|
}
|
|
|
|
|
|
#[test]
|
|
|
fn test_dirsmultiset_new_empty() {
|
|
|
let new = DirsMultiset::from_manifest(&vec![]);
|
|
|
let expected = DirsMultiset {
|
|
|
inner: HashMap::new(),
|
|
|
};
|
|
|
assert_eq!(expected, new);
|
|
|
|
|
|
let new = DirsMultiset::from_dirstate(&HashMap::new(), None);
|
|
|
let expected = DirsMultiset {
|
|
|
inner: HashMap::new(),
|
|
|
};
|
|
|
assert_eq!(expected, new);
|
|
|
}
|
|
|
|
|
|
#[test]
|
|
|
fn test_dirsmultiset_new_no_skip() {
|
|
|
let input_vec = ["a/", "b/", "a/c", "a/d/"]
|
|
|
.iter()
|
|
|
.map(|e| HgPathBuf::from_bytes(e.as_bytes()))
|
|
|
.collect();
|
|
|
let expected_inner = [("", 2), ("a", 3), ("b", 1), ("a/d", 1)]
|
|
|
.iter()
|
|
|
.map(|(k, v)| (HgPathBuf::from_bytes(k.as_bytes()), *v))
|
|
|
.collect();
|
|
|
|
|
|
let new = DirsMultiset::from_manifest(&input_vec);
|
|
|
let expected = DirsMultiset {
|
|
|
inner: expected_inner,
|
|
|
};
|
|
|
assert_eq!(expected, new);
|
|
|
|
|
|
let input_map = ["a/", "b/", "a/c", "a/d/"]
|
|
|
.iter()
|
|
|
.map(|f| {
|
|
|
(
|
|
|
HgPathBuf::from_bytes(f.as_bytes()),
|
|
|
DirstateEntry {
|
|
|
state: EntryState::Normal,
|
|
|
mode: 0,
|
|
|
mtime: 0,
|
|
|
size: 0,
|
|
|
},
|
|
|
)
|
|
|
})
|
|
|
.collect();
|
|
|
let expected_inner = [("", 2), ("a", 3), ("b", 1), ("a/d", 1)]
|
|
|
.iter()
|
|
|
.map(|(k, v)| (HgPathBuf::from_bytes(k.as_bytes()), *v))
|
|
|
.collect();
|
|
|
|
|
|
let new = DirsMultiset::from_dirstate(&input_map, None);
|
|
|
let expected = DirsMultiset {
|
|
|
inner: expected_inner,
|
|
|
};
|
|
|
assert_eq!(expected, new);
|
|
|
}
|
|
|
|
|
|
#[test]
|
|
|
fn test_dirsmultiset_new_skip() {
|
|
|
let input_map = [
|
|
|
("a/", EntryState::Normal),
|
|
|
("a/b/", EntryState::Normal),
|
|
|
("a/c", EntryState::Removed),
|
|
|
("a/d/", EntryState::Merged),
|
|
|
]
|
|
|
.iter()
|
|
|
.map(|(f, state)| {
|
|
|
(
|
|
|
HgPathBuf::from_bytes(f.as_bytes()),
|
|
|
DirstateEntry {
|
|
|
state: *state,
|
|
|
mode: 0,
|
|
|
mtime: 0,
|
|
|
size: 0,
|
|
|
},
|
|
|
)
|
|
|
})
|
|
|
.collect();
|
|
|
|
|
|
// "a" incremented with "a/c" and "a/d/"
|
|
|
let expected_inner = [("", 1), ("a", 2), ("a/d", 1)]
|
|
|
.iter()
|
|
|
.map(|(k, v)| (HgPathBuf::from_bytes(k.as_bytes()), *v))
|
|
|
.collect();
|
|
|
|
|
|
let new =
|
|
|
DirsMultiset::from_dirstate(&input_map, Some(EntryState::Normal));
|
|
|
let expected = DirsMultiset {
|
|
|
inner: expected_inner,
|
|
|
};
|
|
|
assert_eq!(expected, new);
|
|
|
}
|
|
|
}
|
|
|
|
