|
|
use crate::errors::HgError;
|
|
|
use bitflags::bitflags;
|
|
|
use std::convert::TryFrom;
|
|
|
|
|
|
#[derive(Copy, Clone, Debug, Eq, PartialEq)]
|
|
|
pub enum EntryState {
|
|
|
Normal,
|
|
|
Added,
|
|
|
Removed,
|
|
|
Merged,
|
|
|
}
|
|
|
|
|
|
/// The C implementation uses all signed types. This will be an issue
|
|
|
/// either when 4GB+ source files are commonplace or in 2038, whichever
|
|
|
/// comes first.
|
|
|
#[derive(Debug, PartialEq, Copy, Clone)]
|
|
|
pub struct DirstateEntry {
|
|
|
flags: Flags,
|
|
|
mode: i32,
|
|
|
size: i32,
|
|
|
mtime: i32,
|
|
|
}
|
|
|
|
|
|
bitflags! {
|
|
|
struct Flags: u8 {
|
|
|
const WDIR_TRACKED = 1 << 0;
|
|
|
const P1_TRACKED = 1 << 1;
|
|
|
const P2_TRACKED = 1 << 2;
|
|
|
const POSSIBLY_DIRTY = 1 << 3;
|
|
|
const MERGED = 1 << 4;
|
|
|
const CLEAN_P1 = 1 << 5;
|
|
|
const CLEAN_P2 = 1 << 6;
|
|
|
const ENTRYLESS_TREE_NODE = 1 << 7;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
pub const V1_RANGEMASK: i32 = 0x7FFFFFFF;
|
|
|
|
|
|
pub const MTIME_UNSET: i32 = -1;
|
|
|
|
|
|
/// A `DirstateEntry` with a size of `-2` means that it was merged from the
|
|
|
/// other parent. This allows revert to pick the right status back during a
|
|
|
/// merge.
|
|
|
pub const SIZE_FROM_OTHER_PARENT: i32 = -2;
|
|
|
/// A special value used for internal representation of special case in
|
|
|
/// dirstate v1 format.
|
|
|
pub const SIZE_NON_NORMAL: i32 = -1;
|
|
|
|
|
|
impl DirstateEntry {
|
|
|
pub fn from_v1_data(
|
|
|
state: EntryState,
|
|
|
mode: i32,
|
|
|
size: i32,
|
|
|
mtime: i32,
|
|
|
) -> Self {
|
|
|
match state {
|
|
|
EntryState::Normal => {
|
|
|
if size == SIZE_FROM_OTHER_PARENT {
|
|
|
Self::new_from_p2()
|
|
|
} else if size == SIZE_NON_NORMAL {
|
|
|
Self::new_possibly_dirty()
|
|
|
} else if mtime == MTIME_UNSET {
|
|
|
Self {
|
|
|
flags: Flags::WDIR_TRACKED
|
|
|
| Flags::P1_TRACKED
|
|
|
| Flags::POSSIBLY_DIRTY,
|
|
|
mode,
|
|
|
size,
|
|
|
mtime: 0,
|
|
|
}
|
|
|
} else {
|
|
|
Self {
|
|
|
flags: Flags::WDIR_TRACKED | Flags::P1_TRACKED,
|
|
|
mode,
|
|
|
size,
|
|
|
mtime,
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
EntryState::Added => Self::new_added(),
|
|
|
EntryState::Removed => Self {
|
|
|
flags: if size == SIZE_NON_NORMAL {
|
|
|
Flags::P1_TRACKED // might not be true because of rename ?
|
|
|
| Flags::P2_TRACKED // might not be true because of rename ?
|
|
|
| Flags::MERGED
|
|
|
} else if size == SIZE_FROM_OTHER_PARENT {
|
|
|
// We don’t know if P1_TRACKED should be set (file history)
|
|
|
Flags::P2_TRACKED | Flags::CLEAN_P2
|
|
|
} else {
|
|
|
Flags::P1_TRACKED
|
|
|
},
|
|
|
mode: 0,
|
|
|
size: 0,
|
|
|
mtime: 0,
|
|
|
},
|
|
|
EntryState::Merged => Self::new_merged(),
|
|
|
}
|
|
|
}
|
|
|
|
|
|
fn new_from_p2() -> Self {
|
|
|
Self {
|
|
|
// might be missing P1_TRACKED
|
|
|
flags: Flags::WDIR_TRACKED | Flags::P2_TRACKED | Flags::CLEAN_P2,
|
|
|
mode: 0,
|
|
|
size: SIZE_FROM_OTHER_PARENT,
|
|
|
mtime: MTIME_UNSET,
|
|
|
}
|
|
|
}
|
|
|
|
|
|
fn new_possibly_dirty() -> Self {
|
|
|
Self {
|
|
|
flags: Flags::WDIR_TRACKED
|
|
|
| Flags::P1_TRACKED
|
|
|
| Flags::POSSIBLY_DIRTY,
|
|
|
mode: 0,
|
|
|
size: SIZE_NON_NORMAL,
|
|
|
mtime: MTIME_UNSET,
|
|
|
}
|
|
|
}
|
|
|
|
|
|
fn new_added() -> Self {
|
|
|
Self {
|
|
|
flags: Flags::WDIR_TRACKED,
|
|
|
mode: 0,
|
|
|
size: SIZE_NON_NORMAL,
|
|
|
mtime: MTIME_UNSET,
|
|
|
}
|
|
|
}
|
|
|
|
|
|
fn new_merged() -> Self {
|
|
|
Self {
|
|
|
flags: Flags::WDIR_TRACKED
|
|
|
| Flags::P1_TRACKED // might not be true because of rename ?
|
|
|
| Flags::P2_TRACKED // might not be true because of rename ?
|
|
|
| Flags::MERGED,
|
|
|
mode: 0,
|
|
|
size: SIZE_NON_NORMAL,
|
|
|
mtime: MTIME_UNSET,
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/// Creates a new entry in "removed" state.
|
|
|
///
|
|
|
/// `size` is expected to be zero, `SIZE_NON_NORMAL`, or
|
|
|
/// `SIZE_FROM_OTHER_PARENT`
|
|
|
pub fn new_removed(size: i32) -> Self {
|
|
|
Self::from_v1_data(EntryState::Removed, 0, size, 0)
|
|
|
}
|
|
|
|
|
|
/// TODO: refactor `DirstateMap::add_file` to not take a `DirstateEntry`
|
|
|
/// parameter and remove this constructor
|
|
|
pub fn new_for_add_file(mode: i32, size: i32, mtime: i32) -> Self {
|
|
|
// XXX Arbitrary default value since the value is determined later
|
|
|
let state = EntryState::Normal;
|
|
|
Self::from_v1_data(state, mode, size, mtime)
|
|
|
}
|
|
|
|
|
|
fn tracked_in_any_parent(&self) -> bool {
|
|
|
self.flags.intersects(Flags::P1_TRACKED | Flags::P2_TRACKED)
|
|
|
}
|
|
|
|
|
|
fn removed(&self) -> bool {
|
|
|
self.tracked_in_any_parent()
|
|
|
&& !self.flags.contains(Flags::WDIR_TRACKED)
|
|
|
}
|
|
|
|
|
|
fn merged_removed(&self) -> bool {
|
|
|
self.removed() && self.flags.contains(Flags::MERGED)
|
|
|
}
|
|
|
|
|
|
fn from_p2_removed(&self) -> bool {
|
|
|
self.removed() && self.flags.contains(Flags::CLEAN_P2)
|
|
|
}
|
|
|
|
|
|
fn merged(&self) -> bool {
|
|
|
self.flags.contains(Flags::WDIR_TRACKED | Flags::MERGED)
|
|
|
}
|
|
|
|
|
|
fn added(&self) -> bool {
|
|
|
self.flags.contains(Flags::WDIR_TRACKED)
|
|
|
&& !self.tracked_in_any_parent()
|
|
|
}
|
|
|
|
|
|
fn from_p2(&self) -> bool {
|
|
|
self.flags.contains(Flags::WDIR_TRACKED | Flags::CLEAN_P2)
|
|
|
}
|
|
|
|
|
|
pub fn state(&self) -> EntryState {
|
|
|
if self.removed() {
|
|
|
EntryState::Removed
|
|
|
} else if self.merged() {
|
|
|
EntryState::Merged
|
|
|
} else if self.added() {
|
|
|
EntryState::Added
|
|
|
} else {
|
|
|
EntryState::Normal
|
|
|
}
|
|
|
}
|
|
|
|
|
|
pub fn mode(&self) -> i32 {
|
|
|
self.mode
|
|
|
}
|
|
|
|
|
|
pub fn size(&self) -> i32 {
|
|
|
if self.merged_removed() {
|
|
|
SIZE_NON_NORMAL
|
|
|
} else if self.from_p2_removed() {
|
|
|
SIZE_FROM_OTHER_PARENT
|
|
|
} else if self.removed() {
|
|
|
0
|
|
|
} else if self.merged() {
|
|
|
SIZE_FROM_OTHER_PARENT
|
|
|
} else if self.added() {
|
|
|
SIZE_NON_NORMAL
|
|
|
} else if self.from_p2() {
|
|
|
SIZE_FROM_OTHER_PARENT
|
|
|
} else if self.flags.contains(Flags::POSSIBLY_DIRTY) {
|
|
|
self.size // TODO: SIZE_NON_NORMAL ?
|
|
|
} else {
|
|
|
self.size
|
|
|
}
|
|
|
}
|
|
|
|
|
|
pub fn mtime(&self) -> i32 {
|
|
|
if self.removed() {
|
|
|
0
|
|
|
} else if self.flags.contains(Flags::POSSIBLY_DIRTY) {
|
|
|
MTIME_UNSET
|
|
|
} else if self.merged() {
|
|
|
MTIME_UNSET
|
|
|
} else if self.added() {
|
|
|
MTIME_UNSET
|
|
|
} else if self.from_p2() {
|
|
|
MTIME_UNSET
|
|
|
} else {
|
|
|
self.mtime
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/// Returns `(state, mode, size, mtime)` for the puprose of serialization
|
|
|
/// in the dirstate-v1 format.
|
|
|
///
|
|
|
/// This includes marker values such as `mtime == -1`. In the future we may
|
|
|
/// want to not represent these cases that way in memory, but serialization
|
|
|
/// will need to keep the same format.
|
|
|
pub fn v1_data(&self) -> (u8, i32, i32, i32) {
|
|
|
(self.state().into(), self.mode(), self.size(), self.mtime())
|
|
|
}
|
|
|
|
|
|
pub fn is_non_normal(&self) -> bool {
|
|
|
self.state() != EntryState::Normal || self.mtime() == MTIME_UNSET
|
|
|
}
|
|
|
|
|
|
pub fn is_from_other_parent(&self) -> bool {
|
|
|
self.state() == EntryState::Normal
|
|
|
&& self.size() == SIZE_FROM_OTHER_PARENT
|
|
|
}
|
|
|
|
|
|
// TODO: other platforms
|
|
|
#[cfg(unix)]
|
|
|
pub fn mode_changed(
|
|
|
&self,
|
|
|
filesystem_metadata: &std::fs::Metadata,
|
|
|
) -> bool {
|
|
|
use std::os::unix::fs::MetadataExt;
|
|
|
const EXEC_BIT_MASK: u32 = 0o100;
|
|
|
let dirstate_exec_bit = (self.mode() as u32) & EXEC_BIT_MASK;
|
|
|
let fs_exec_bit = filesystem_metadata.mode() & EXEC_BIT_MASK;
|
|
|
dirstate_exec_bit != fs_exec_bit
|
|
|
}
|
|
|
|
|
|
/// Returns a `(state, mode, size, mtime)` tuple as for
|
|
|
/// `DirstateMapMethods::debug_iter`.
|
|
|
pub fn debug_tuple(&self) -> (u8, i32, i32, i32) {
|
|
|
let state = if self.flags.contains(Flags::ENTRYLESS_TREE_NODE) {
|
|
|
b' '
|
|
|
} else {
|
|
|
self.state().into()
|
|
|
};
|
|
|
(state, self.mode(), self.size(), self.mtime())
|
|
|
}
|
|
|
|
|
|
pub fn mtime_is_ambiguous(&self, now: i32) -> bool {
|
|
|
self.state() == EntryState::Normal && self.mtime() == now
|
|
|
}
|
|
|
|
|
|
pub fn clear_ambiguous_mtime(&mut self, now: i32) -> bool {
|
|
|
let ambiguous = self.mtime_is_ambiguous(now);
|
|
|
if ambiguous {
|
|
|
// The file was last modified "simultaneously" with the current
|
|
|
// write to dirstate (i.e. within the same second for file-
|
|
|
// systems with a granularity of 1 sec). This commonly happens
|
|
|
// for at least a couple of files on 'update'.
|
|
|
// The user could change the file without changing its size
|
|
|
// within the same second. Invalidate the file's mtime in
|
|
|
// dirstate, forcing future 'status' calls to compare the
|
|
|
// contents of the file if the size is the same. This prevents
|
|
|
// mistakenly treating such files as clean.
|
|
|
self.clear_mtime()
|
|
|
}
|
|
|
ambiguous
|
|
|
}
|
|
|
|
|
|
pub fn clear_mtime(&mut self) {
|
|
|
self.mtime = -1;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
impl EntryState {
|
|
|
pub fn is_tracked(self) -> bool {
|
|
|
use EntryState::*;
|
|
|
match self {
|
|
|
Normal | Added | Merged => true,
|
|
|
Removed => false,
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
impl TryFrom<u8> for EntryState {
|
|
|
type Error = HgError;
|
|
|
|
|
|
fn try_from(value: u8) -> Result<Self, Self::Error> {
|
|
|
match value {
|
|
|
b'n' => Ok(EntryState::Normal),
|
|
|
b'a' => Ok(EntryState::Added),
|
|
|
b'r' => Ok(EntryState::Removed),
|
|
|
b'm' => Ok(EntryState::Merged),
|
|
|
_ => Err(HgError::CorruptedRepository(format!(
|
|
|
"Incorrect dirstate entry state {}",
|
|
|
value
|
|
|
))),
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
impl Into<u8> for EntryState {
|
|
|
fn into(self) -> u8 {
|
|
|
match self {
|
|
|
EntryState::Normal => b'n',
|
|
|
EntryState::Added => b'a',
|
|
|
EntryState::Removed => b'r',
|
|
|
EntryState::Merged => b'm',
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|