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// dirstate_map.rs
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//
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// Copyright 2019 Raphaël Gomès <rgomes@octobus.net>
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//
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// This software may be used and distributed according to the terms of the
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// GNU General Public License version 2 or any later version.
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//! Bindings for the `hg::dirstate::dirstate_map` file provided by the
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//! `hg-core` package.
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use std::cell::{RefCell, RefMut};
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use std::convert::TryInto;
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use cpython::{
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exc, PyBool, PyBytes, PyClone, PyDict, PyErr, PyList, PyNone, PyObject,
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PyResult, Python, PythonObject, ToPyObject, UnsafePyLeaked,
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};
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use crate::{
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dirstate::copymap::{CopyMap, CopyMapItemsIterator, CopyMapKeysIterator},
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dirstate::item::DirstateItem,
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pybytes_deref::PyBytesDeref,
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};
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use hg::{
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dirstate::StateMapIter,
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dirstate_tree::dirstate_map::DirstateMap as TreeDirstateMap,
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dirstate_tree::on_disk::DirstateV2ParseError,
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dirstate_tree::owning::OwningDirstateMap,
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revlog::Node,
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utils::files::normalize_case,
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utils::hg_path::{HgPath, HgPathBuf},
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DirstateEntry, DirstateError, DirstateParents, EntryState,
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};
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// TODO
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// This object needs to share references to multiple members of its Rust
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// inner struct, namely `copy_map`, `dirs` and `all_dirs`.
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// Right now `CopyMap` is done, but it needs to have an explicit reference
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// to `RustDirstateMap` which itself needs to have an encapsulation for
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// every method in `CopyMap` (copymapcopy, etc.).
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// This is ugly and hard to maintain.
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// The same logic applies to `dirs` and `all_dirs`, however the `Dirs`
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// `py_class!` is already implemented and does not mention
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// `RustDirstateMap`, rightfully so.
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// All attributes also have to have a separate refcount data attribute for
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// leaks, with all methods that go along for reference sharing.
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py_class!(pub class DirstateMap |py| {
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@shared data inner: OwningDirstateMap;
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/// Returns a `(dirstate_map, parents)` tuple
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@staticmethod
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def new_v1(
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on_disk: PyBytes,
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) -> PyResult<PyObject> {
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let on_disk = PyBytesDeref::new(py, on_disk);
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let mut map = OwningDirstateMap::new_empty(on_disk);
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let (on_disk, map_placeholder) = map.get_pair_mut();
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let (actual_map, parents) = TreeDirstateMap::new_v1(on_disk)
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.map_err(|e| dirstate_error(py, e))?;
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*map_placeholder = actual_map;
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let map = Self::create_instance(py, map)?;
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let parents = parents.map(|p| {
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let p1 = PyBytes::new(py, p.p1.as_bytes());
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let p2 = PyBytes::new(py, p.p2.as_bytes());
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(p1, p2)
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});
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Ok((map, parents).to_py_object(py).into_object())
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}
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/// Returns a DirstateMap
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@staticmethod
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def new_v2(
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on_disk: PyBytes,
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data_size: usize,
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tree_metadata: PyBytes,
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) -> PyResult<PyObject> {
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let dirstate_error = |e: DirstateError| {
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PyErr::new::<exc::OSError, _>(py, format!("Dirstate error: {:?}", e))
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};
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let on_disk = PyBytesDeref::new(py, on_disk);
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let mut map = OwningDirstateMap::new_empty(on_disk);
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let (on_disk, map_placeholder) = map.get_pair_mut();
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*map_placeholder = TreeDirstateMap::new_v2(
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on_disk, data_size, tree_metadata.data(py),
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).map_err(dirstate_error)?;
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let map = Self::create_instance(py, map)?;
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Ok(map.into_object())
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}
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def clear(&self) -> PyResult<PyObject> {
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self.inner(py).borrow_mut().clear();
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Ok(py.None())
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}
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def get(
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&self,
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key: PyObject,
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default: Option<PyObject> = None
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) -> PyResult<Option<PyObject>> {
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let key = key.extract::<PyBytes>(py)?;
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match self
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.inner(py)
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.borrow()
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.get(HgPath::new(key.data(py)))
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.map_err(|e| v2_error(py, e))?
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{
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Some(entry) => {
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Ok(Some(DirstateItem::new_as_pyobject(py, entry)?))
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},
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None => Ok(default)
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}
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}
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def set_dirstate_item(
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&self,
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path: PyObject,
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item: DirstateItem
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) -> PyResult<PyObject> {
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let f = path.extract::<PyBytes>(py)?;
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let filename = HgPath::new(f.data(py));
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self.inner(py)
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.borrow_mut()
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.set_entry(filename, item.get_entry(py))
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.map_err(|e| v2_error(py, e))?;
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Ok(py.None())
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}
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def addfile(
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&self,
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f: PyBytes,
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item: DirstateItem,
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) -> PyResult<PyNone> {
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let filename = HgPath::new(f.data(py));
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let entry = item.get_entry(py);
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self.inner(py)
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.borrow_mut()
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.add_file(filename, entry)
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.map_err(|e |dirstate_error(py, e))?;
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Ok(PyNone)
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}
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def removefile(
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&self,
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f: PyObject,
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in_merge: PyObject
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) -> PyResult<PyObject> {
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self.inner(py).borrow_mut()
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.remove_file(
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HgPath::new(f.extract::<PyBytes>(py)?.data(py)),
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in_merge.extract::<PyBool>(py)?.is_true(),
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)
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.or_else(|_| {
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Err(PyErr::new::<exc::OSError, _>(
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py,
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"Dirstate error".to_string(),
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))
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})?;
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Ok(py.None())
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}
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def drop_item_and_copy_source(
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&self,
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f: PyBytes,
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) -> PyResult<PyNone> {
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self.inner(py)
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.borrow_mut()
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.drop_entry_and_copy_source(HgPath::new(f.data(py)))
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.map_err(|e |dirstate_error(py, e))?;
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Ok(PyNone)
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}
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def hastrackeddir(&self, d: PyObject) -> PyResult<PyBool> {
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let d = d.extract::<PyBytes>(py)?;
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Ok(self.inner(py).borrow_mut()
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.has_tracked_dir(HgPath::new(d.data(py)))
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.map_err(|e| {
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PyErr::new::<exc::ValueError, _>(py, e.to_string())
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})?
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.to_py_object(py))
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}
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def hasdir(&self, d: PyObject) -> PyResult<PyBool> {
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let d = d.extract::<PyBytes>(py)?;
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Ok(self.inner(py).borrow_mut()
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.has_dir(HgPath::new(d.data(py)))
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.map_err(|e| {
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PyErr::new::<exc::ValueError, _>(py, e.to_string())
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})?
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.to_py_object(py))
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}
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def write_v1(
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&self,
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p1: PyObject,
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p2: PyObject,
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) -> PyResult<PyBytes> {
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let mut inner = self.inner(py).borrow_mut();
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let parents = DirstateParents {
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p1: extract_node_id(py, &p1)?,
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p2: extract_node_id(py, &p2)?,
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};
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let result = inner.pack_v1(parents);
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match result {
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Ok(packed) => Ok(PyBytes::new(py, &packed)),
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Err(_) => Err(PyErr::new::<exc::OSError, _>(
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py,
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"Dirstate error".to_string(),
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)),
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}
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}
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/// Returns new data together with whether that data should be appended to
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/// the existing data file whose content is at `self.on_disk` (True),
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/// instead of written to a new data file (False).
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def write_v2(
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&self,
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can_append: bool,
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) -> PyResult<PyObject> {
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let mut inner = self.inner(py).borrow_mut();
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let result = inner.pack_v2(can_append);
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match result {
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Ok((packed, tree_metadata, append)) => {
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let packed = PyBytes::new(py, &packed);
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let tree_metadata = PyBytes::new(py, &tree_metadata);
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let tuple = (packed, tree_metadata, append);
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Ok(tuple.to_py_object(py).into_object())
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},
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Err(_) => Err(PyErr::new::<exc::OSError, _>(
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py,
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"Dirstate error".to_string(),
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)),
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}
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}
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def filefoldmapasdict(&self) -> PyResult<PyDict> {
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let dict = PyDict::new(py);
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for item in self.inner(py).borrow_mut().iter() {
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let (path, entry) = item.map_err(|e| v2_error(py, e))?;
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if entry.state() != EntryState::Removed {
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let key = normalize_case(path);
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let value = path;
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dict.set_item(
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py,
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PyBytes::new(py, key.as_bytes()).into_object(),
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PyBytes::new(py, value.as_bytes()).into_object(),
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)?;
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}
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}
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Ok(dict)
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}
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def __len__(&self) -> PyResult<usize> {
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Ok(self.inner(py).borrow().len())
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}
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def __contains__(&self, key: PyObject) -> PyResult<bool> {
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let key = key.extract::<PyBytes>(py)?;
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self.inner(py)
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.borrow()
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.contains_key(HgPath::new(key.data(py)))
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.map_err(|e| v2_error(py, e))
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}
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def __getitem__(&self, key: PyObject) -> PyResult<PyObject> {
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let key = key.extract::<PyBytes>(py)?;
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let key = HgPath::new(key.data(py));
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match self
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.inner(py)
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.borrow()
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.get(key)
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.map_err(|e| v2_error(py, e))?
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{
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Some(entry) => {
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Ok(DirstateItem::new_as_pyobject(py, entry)?)
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},
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None => Err(PyErr::new::<exc::KeyError, _>(
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py,
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String::from_utf8_lossy(key.as_bytes()),
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)),
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}
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}
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def keys(&self) -> PyResult<DirstateMapKeysIterator> {
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let leaked_ref = self.inner(py).leak_immutable();
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DirstateMapKeysIterator::from_inner(
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py,
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unsafe { leaked_ref.map(py, |o| o.iter()) },
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)
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}
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def items(&self) -> PyResult<DirstateMapItemsIterator> {
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let leaked_ref = self.inner(py).leak_immutable();
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DirstateMapItemsIterator::from_inner(
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py,
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unsafe { leaked_ref.map(py, |o| o.iter()) },
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)
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}
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def __iter__(&self) -> PyResult<DirstateMapKeysIterator> {
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let leaked_ref = self.inner(py).leak_immutable();
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DirstateMapKeysIterator::from_inner(
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py,
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unsafe { leaked_ref.map(py, |o| o.iter()) },
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)
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}
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// TODO all copymap* methods, see docstring above
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def copymapcopy(&self) -> PyResult<PyDict> {
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let dict = PyDict::new(py);
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for item in self.inner(py).borrow().copy_map_iter() {
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let (key, value) = item.map_err(|e| v2_error(py, e))?;
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dict.set_item(
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py,
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PyBytes::new(py, key.as_bytes()),
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PyBytes::new(py, value.as_bytes()),
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)?;
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}
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Ok(dict)
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}
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def copymapgetitem(&self, key: PyObject) -> PyResult<PyBytes> {
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let key = key.extract::<PyBytes>(py)?;
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match self
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.inner(py)
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.borrow()
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.copy_map_get(HgPath::new(key.data(py)))
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.map_err(|e| v2_error(py, e))?
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{
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Some(copy) => Ok(PyBytes::new(py, copy.as_bytes())),
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None => Err(PyErr::new::<exc::KeyError, _>(
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py,
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String::from_utf8_lossy(key.data(py)),
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)),
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}
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}
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def copymap(&self) -> PyResult<CopyMap> {
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CopyMap::from_inner(py, self.clone_ref(py))
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}
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def copymaplen(&self) -> PyResult<usize> {
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Ok(self.inner(py).borrow().copy_map_len())
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}
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def copymapcontains(&self, key: PyObject) -> PyResult<bool> {
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let key = key.extract::<PyBytes>(py)?;
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self.inner(py)
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.borrow()
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.copy_map_contains_key(HgPath::new(key.data(py)))
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.map_err(|e| v2_error(py, e))
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}
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def copymapget(
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&self,
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key: PyObject,
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default: Option<PyObject>
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) -> PyResult<Option<PyObject>> {
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let key = key.extract::<PyBytes>(py)?;
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match self
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.inner(py)
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.borrow()
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.copy_map_get(HgPath::new(key.data(py)))
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.map_err(|e| v2_error(py, e))?
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{
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Some(copy) => Ok(Some(
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PyBytes::new(py, copy.as_bytes()).into_object(),
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)),
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None => Ok(default),
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}
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}
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def copymapsetitem(
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&self,
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key: PyObject,
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value: PyObject
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) -> PyResult<PyObject> {
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let key = key.extract::<PyBytes>(py)?;
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let value = value.extract::<PyBytes>(py)?;
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self.inner(py)
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.borrow_mut()
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.copy_map_insert(
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HgPathBuf::from_bytes(key.data(py)),
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HgPathBuf::from_bytes(value.data(py)),
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)
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.map_err(|e| v2_error(py, e))?;
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Ok(py.None())
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}
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def copymappop(
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&self,
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key: PyObject,
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default: Option<PyObject>
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) -> PyResult<Option<PyObject>> {
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let key = key.extract::<PyBytes>(py)?;
|
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match self
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.inner(py)
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.borrow_mut()
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.copy_map_remove(HgPath::new(key.data(py)))
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.map_err(|e| v2_error(py, e))?
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{
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Some(copy) => Ok(Some(
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PyBytes::new(py, copy.as_bytes()).into_object(),
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)),
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None => Ok(default),
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}
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}
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def copymapiter(&self) -> PyResult<CopyMapKeysIterator> {
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let leaked_ref = self.inner(py).leak_immutable();
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CopyMapKeysIterator::from_inner(
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py,
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unsafe { leaked_ref.map(py, |o| o.copy_map_iter()) },
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)
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}
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def copymapitemsiter(&self) -> PyResult<CopyMapItemsIterator> {
|
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let leaked_ref = self.inner(py).leak_immutable();
|
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CopyMapItemsIterator::from_inner(
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|
py,
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unsafe { leaked_ref.map(py, |o| o.copy_map_iter()) },
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|
|
)
|
|
|
}
|
|
|
|
|
|
def tracked_dirs(&self) -> PyResult<PyList> {
|
|
|
let dirs = PyList::new(py, &[]);
|
|
|
for path in self.inner(py).borrow_mut().iter_tracked_dirs()
|
|
|
.map_err(|e |dirstate_error(py, e))?
|
|
|
{
|
|
|
let path = path.map_err(|e| v2_error(py, e))?;
|
|
|
let path = PyBytes::new(py, path.as_bytes());
|
|
|
dirs.append(py, path.into_object())
|
|
|
}
|
|
|
Ok(dirs)
|
|
|
}
|
|
|
|
|
|
def debug_iter(&self, all: bool) -> PyResult<PyList> {
|
|
|
let dirs = PyList::new(py, &[]);
|
|
|
for item in self.inner(py).borrow().debug_iter(all) {
|
|
|
let (path, (state, mode, size, mtime)) =
|
|
|
item.map_err(|e| v2_error(py, e))?;
|
|
|
let path = PyBytes::new(py, path.as_bytes());
|
|
|
let item = (path, state, mode, size, mtime);
|
|
|
dirs.append(py, item.to_py_object(py).into_object())
|
|
|
}
|
|
|
Ok(dirs)
|
|
|
}
|
|
|
});
|
|
|
|
|
|
impl DirstateMap {
|
|
|
pub fn get_inner_mut<'a>(
|
|
|
&'a self,
|
|
|
py: Python<'a>,
|
|
|
) -> RefMut<'a, OwningDirstateMap> {
|
|
|
self.inner(py).borrow_mut()
|
|
|
}
|
|
|
fn translate_key(
|
|
|
py: Python,
|
|
|
res: Result<(&HgPath, DirstateEntry), DirstateV2ParseError>,
|
|
|
) -> PyResult<Option<PyBytes>> {
|
|
|
let (f, _entry) = res.map_err(|e| v2_error(py, e))?;
|
|
|
Ok(Some(PyBytes::new(py, f.as_bytes())))
|
|
|
}
|
|
|
fn translate_key_value(
|
|
|
py: Python,
|
|
|
res: Result<(&HgPath, DirstateEntry), DirstateV2ParseError>,
|
|
|
) -> PyResult<Option<(PyBytes, PyObject)>> {
|
|
|
let (f, entry) = res.map_err(|e| v2_error(py, e))?;
|
|
|
Ok(Some((
|
|
|
PyBytes::new(py, f.as_bytes()),
|
|
|
DirstateItem::new_as_pyobject(py, entry)?,
|
|
|
)))
|
|
|
}
|
|
|
}
|
|
|
|
|
|
py_shared_iterator!(
|
|
|
DirstateMapKeysIterator,
|
|
|
UnsafePyLeaked<StateMapIter<'static>>,
|
|
|
DirstateMap::translate_key,
|
|
|
Option<PyBytes>
|
|
|
);
|
|
|
|
|
|
py_shared_iterator!(
|
|
|
DirstateMapItemsIterator,
|
|
|
UnsafePyLeaked<StateMapIter<'static>>,
|
|
|
DirstateMap::translate_key_value,
|
|
|
Option<(PyBytes, PyObject)>
|
|
|
);
|
|
|
|
|
|
fn extract_node_id(py: Python, obj: &PyObject) -> PyResult<Node> {
|
|
|
let bytes = obj.extract::<PyBytes>(py)?;
|
|
|
match bytes.data(py).try_into() {
|
|
|
Ok(s) => Ok(s),
|
|
|
Err(e) => Err(PyErr::new::<exc::ValueError, _>(py, e.to_string())),
|
|
|
}
|
|
|
}
|
|
|
|
|
|
pub(super) fn v2_error(py: Python<'_>, _: DirstateV2ParseError) -> PyErr {
|
|
|
PyErr::new::<exc::ValueError, _>(py, "corrupted dirstate-v2")
|
|
|
}
|
|
|
|
|
|
fn dirstate_error(py: Python<'_>, e: DirstateError) -> PyErr {
|
|
|
PyErr::new::<exc::OSError, _>(py, format!("Dirstate error: {:?}", e))
|
|
|
}
|
|
|
|
