mercurial-scm/hg-stable: rust/hg-core/src/revlog/revlog.rs annotate

annotate rust/hg-core/src/revlog/revlog.rs @ 49123:5d205e476057

rust-revlog: add methods for getting parent revs and entries Differential Revision: https://phab.mercurial-scm.org/D12442

author	Martin von Zweigbergk <martinvonz@google.com>
date	Tue, 05 Apr 2022 12:06:32 -0700
parents	e91aa800ae5b
children	07d8d144c222

rev	line source
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	1 use std::borrow::Cow;
48572 0a4ac916673e rhg: RevlogEntry::uncompressed_len is signed Simon Sapin <simon.sapin@octobus.net> parents: 48571 diff changeset	2 use std::convert::TryFrom;
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	3 use std::io::Read;
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	4 use std::ops::Deref;
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	5 use std::path::Path;
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	6
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	7 use flate2::read::ZlibDecoder;
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	8 use micro_timer::timed;
47386 fad504cfc94b rust: Use a maintained crate for SHA-1 hashing Simon Sapin <simon.sapin@octobus.net> parents: 46821 diff changeset	9 use sha1::{Digest, Sha1};
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	10 use zstd;
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	11
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	12 use super::index::Index;
46499 645ee7225fab rust: Make NodePrefix allocation-free and Copy, remove NodePrefixRef Simon Sapin <simon.sapin@octobus.net> parents: 46462 diff changeset	13 use super::node::{NodePrefix, NODE_BYTES_LENGTH, NULL_NODE};
46091 9eb07ab3f2d4 rhg: use persistent nodemap when available Simon Sapin <simon-commits@exyr.org> parents: 46037 diff changeset	14 use super::nodemap;
46511 43d63979a75e rust: use HgError in RevlogError and Vfs Simon Sapin <simon.sapin@octobus.net> parents: 46501 diff changeset	15 use super::nodemap::{NodeMap, NodeMapError};
46091 9eb07ab3f2d4 rhg: use persistent nodemap when available Simon Sapin <simon-commits@exyr.org> parents: 46037 diff changeset	16 use super::nodemap_docket::NodeMapDocket;
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	17 use super::patch;
46511 43d63979a75e rust: use HgError in RevlogError and Vfs Simon Sapin <simon.sapin@octobus.net> parents: 46501 diff changeset	18 use crate::errors::HgError;
46167 8a4914397d02 rust: introduce Repo and Vfs types for filesystem abstraction Simon Sapin <simon.sapin@octobus.net> parents: 46091 diff changeset	19 use crate::repo::Repo;
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	20 use crate::revlog::Revision;
47995 6c653d9d41b8 rust: Make private the `index` field of the `Revlog` struct Simon Sapin <simon.sapin@octobus.net> parents: 47991 diff changeset	21 use crate::{Node, NULL_REVISION};
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	22
48575 e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	23 const REVISION_FLAG_CENSORED: u16 = 1 << 15;
e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	24 const REVISION_FLAG_ELLIPSIS: u16 = 1 << 14;
e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	25 const REVISION_FLAG_EXTSTORED: u16 = 1 << 13;
e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	26 const REVISION_FLAG_HASCOPIESINFO: u16 = 1 << 12;
e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	27
e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	28 // Keep this in sync with REVIDX_KNOWN_FLAGS in
e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	29 // mercurial/revlogutils/flagutil.py
e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	30 const REVIDX_KNOWN_FLAGS: u16 = REVISION_FLAG_CENSORED
e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	31 \| REVISION_FLAG_ELLIPSIS
e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	32 \| REVISION_FLAG_EXTSTORED
e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	33 \| REVISION_FLAG_HASCOPIESINFO;
e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	34
46511 43d63979a75e rust: use HgError in RevlogError and Vfs Simon Sapin <simon.sapin@octobus.net> parents: 46501 diff changeset	35 #[derive(derive_more::From)]
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	36 pub enum RevlogError {
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	37 InvalidRevision,
46821 e8ae91b1a63d rhg: raise wdir specific error for `hg debugdata` Pulkit Goyal <7895pulkit@gmail.com> parents: 46757 diff changeset	38 /// Working directory is not supported
e8ae91b1a63d rhg: raise wdir specific error for `hg debugdata` Pulkit Goyal <7895pulkit@gmail.com> parents: 46757 diff changeset	39 WDirUnsupported,
46036 8d6164098782 rhg: allow specifying a changeset ID prefix Simon Sapin <simon-commits@exyr.org> parents: 45825 diff changeset	40 /// Found more than one entry whose ID match the requested prefix
8d6164098782 rhg: allow specifying a changeset ID prefix Simon Sapin <simon-commits@exyr.org> parents: 45825 diff changeset	41 AmbiguousPrefix,
46511 43d63979a75e rust: use HgError in RevlogError and Vfs Simon Sapin <simon.sapin@octobus.net> parents: 46501 diff changeset	42 #[from]
43d63979a75e rust: use HgError in RevlogError and Vfs Simon Sapin <simon.sapin@octobus.net> parents: 46501 diff changeset	43 Other(HgError),
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	44 }
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	45
46511 43d63979a75e rust: use HgError in RevlogError and Vfs Simon Sapin <simon.sapin@octobus.net> parents: 46501 diff changeset	46 impl From<NodeMapError> for RevlogError {
43d63979a75e rust: use HgError in RevlogError and Vfs Simon Sapin <simon.sapin@octobus.net> parents: 46501 diff changeset	47 fn from(error: NodeMapError) -> Self {
43d63979a75e rust: use HgError in RevlogError and Vfs Simon Sapin <simon.sapin@octobus.net> parents: 46501 diff changeset	48 match error {
43d63979a75e rust: use HgError in RevlogError and Vfs Simon Sapin <simon.sapin@octobus.net> parents: 46501 diff changeset	49 NodeMapError::MultipleResults => RevlogError::AmbiguousPrefix,
43d63979a75e rust: use HgError in RevlogError and Vfs Simon Sapin <simon.sapin@octobus.net> parents: 46501 diff changeset	50 NodeMapError::RevisionNotInIndex(_) => RevlogError::corrupted(),
43d63979a75e rust: use HgError in RevlogError and Vfs Simon Sapin <simon.sapin@octobus.net> parents: 46501 diff changeset	51 }
43d63979a75e rust: use HgError in RevlogError and Vfs Simon Sapin <simon.sapin@octobus.net> parents: 46501 diff changeset	52 }
43d63979a75e rust: use HgError in RevlogError and Vfs Simon Sapin <simon.sapin@octobus.net> parents: 46501 diff changeset	53 }
43d63979a75e rust: use HgError in RevlogError and Vfs Simon Sapin <simon.sapin@octobus.net> parents: 46501 diff changeset	54
48571 35c47015b9b7 rhg: Expose FilelogEntry that wraps RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48570 diff changeset	55 fn corrupted() -> HgError {
35c47015b9b7 rhg: Expose FilelogEntry that wraps RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48570 diff changeset	56 HgError::corrupted("corrupted revlog")
35c47015b9b7 rhg: Expose FilelogEntry that wraps RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48570 diff changeset	57 }
35c47015b9b7 rhg: Expose FilelogEntry that wraps RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48570 diff changeset	58
46511 43d63979a75e rust: use HgError in RevlogError and Vfs Simon Sapin <simon.sapin@octobus.net> parents: 46501 diff changeset	59 impl RevlogError {
43d63979a75e rust: use HgError in RevlogError and Vfs Simon Sapin <simon.sapin@octobus.net> parents: 46501 diff changeset	60 fn corrupted() -> Self {
48571 35c47015b9b7 rhg: Expose FilelogEntry that wraps RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48570 diff changeset	61 RevlogError::Other(corrupted())
46462 0800aa42bb4c rust: use the bytes-cast crate to parse persistent nodemaps Simon Sapin <simon.sapin@octobus.net> parents: 46167 diff changeset	62 }
0800aa42bb4c rust: use the bytes-cast crate to parse persistent nodemaps Simon Sapin <simon.sapin@octobus.net> parents: 46167 diff changeset	63 }
0800aa42bb4c rust: use the bytes-cast crate to parse persistent nodemaps Simon Sapin <simon.sapin@octobus.net> parents: 46167 diff changeset	64
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	65 /// Read only implementation of revlog.
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	66 pub struct Revlog {
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	67 /// When index and data are not interleaved: bytes of the revlog index.
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	68 /// When index and data are interleaved: bytes of the revlog index and
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	69 /// data.
47995 6c653d9d41b8 rust: Make private the `index` field of the `Revlog` struct Simon Sapin <simon.sapin@octobus.net> parents: 47991 diff changeset	70 index: Index,
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	71 /// When index and data are not interleaved: bytes of the revlog data
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	72 data_bytes: Option<Box<dyn Deref<Target = [u8]> + Send>>,
46091 9eb07ab3f2d4 rhg: use persistent nodemap when available Simon Sapin <simon-commits@exyr.org> parents: 46037 diff changeset	73 /// When present on disk: the persistent nodemap for this revlog
9eb07ab3f2d4 rhg: use persistent nodemap when available Simon Sapin <simon-commits@exyr.org> parents: 46037 diff changeset	74 nodemap: Option<nodemap::NodeTree>,
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	75 }
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	76
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	77 impl Revlog {
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	78 /// Open a revlog index file.
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	79 ///
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	80 /// It will also open the associated data file if index and data are not
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	81 /// interleaved.
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	82 #[timed]
45825 7252f5237352 hg-core: fix path encoding usage Antoine cezar<acezar@chwitlabs.fr> parents: 45606 diff changeset	83 pub fn open(
46167 8a4914397d02 rust: introduce Repo and Vfs types for filesystem abstraction Simon Sapin <simon.sapin@octobus.net> parents: 46091 diff changeset	84 repo: &Repo,
8a4914397d02 rust: introduce Repo and Vfs types for filesystem abstraction Simon Sapin <simon.sapin@octobus.net> parents: 46091 diff changeset	85 index_path: impl AsRef<Path>,
45825 7252f5237352 hg-core: fix path encoding usage Antoine cezar<acezar@chwitlabs.fr> parents: 45606 diff changeset	86 data_path: Option<&Path>,
47991 001d747c2baf rust: Return HgError instead of RevlogError in revlog constructors Simon Sapin <simon.sapin@octobus.net> parents: 47990 diff changeset	87 ) -> Result<Self, HgError> {
46167 8a4914397d02 rust: introduce Repo and Vfs types for filesystem abstraction Simon Sapin <simon.sapin@octobus.net> parents: 46091 diff changeset	88 let index_path = index_path.as_ref();
48211 9d0e5629cfbf rhg: do not fail when the repo is empty Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48210 diff changeset	89 let index = {
9d0e5629cfbf rhg: do not fail when the repo is empty Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48210 diff changeset	90 match repo.store_vfs().mmap_open_opt(&index_path)? {
9d0e5629cfbf rhg: do not fail when the repo is empty Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48210 diff changeset	91 None => Index::new(Box::new(vec![])),
9d0e5629cfbf rhg: do not fail when the repo is empty Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48210 diff changeset	92 Some(index_mmap) => {
9d0e5629cfbf rhg: do not fail when the repo is empty Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48210 diff changeset	93 let index = Index::new(Box::new(index_mmap))?;
9d0e5629cfbf rhg: do not fail when the repo is empty Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48210 diff changeset	94 Ok(index)
9d0e5629cfbf rhg: do not fail when the repo is empty Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48210 diff changeset	95 }
9d0e5629cfbf rhg: do not fail when the repo is empty Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48210 diff changeset	96 }
9d0e5629cfbf rhg: do not fail when the repo is empty Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48210 diff changeset	97 }?;
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	98
45825 7252f5237352 hg-core: fix path encoding usage Antoine cezar<acezar@chwitlabs.fr> parents: 45606 diff changeset	99 let default_data_path = index_path.with_extension("d");
7252f5237352 hg-core: fix path encoding usage Antoine cezar<acezar@chwitlabs.fr> parents: 45606 diff changeset	100
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	101 // type annotation required
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	102 // won't recognize Mmap as Deref<Target = [u8]>
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	103 let data_bytes: Option<Box<dyn Deref<Target = [u8]> + Send>> =
45604 900b9b79b99c hg-core: make `Index` owner of its bytes (D8958#inline-14994 followup 1/2) Antoine cezar<acezar@chwitlabs.fr> parents: 45598 diff changeset	104 if index.is_inline() {
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	105 None
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	106 } else {
45825 7252f5237352 hg-core: fix path encoding usage Antoine cezar<acezar@chwitlabs.fr> parents: 45606 diff changeset	107 let data_path = data_path.unwrap_or(&default_data_path);
46511 43d63979a75e rust: use HgError in RevlogError and Vfs Simon Sapin <simon.sapin@octobus.net> parents: 46501 diff changeset	108 let data_mmap = repo.store_vfs().mmap_open(data_path)?;
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	109 Some(Box::new(data_mmap))
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	110 };
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	111
48238 5e77bdc29d56 rhg: do not try to open a nodemap for an inline index Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48211 diff changeset	112 let nodemap = if index.is_inline() {
5e77bdc29d56 rhg: do not try to open a nodemap for an inline index Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48211 diff changeset	113 None
5e77bdc29d56 rhg: do not try to open a nodemap for an inline index Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48211 diff changeset	114 } else {
5e77bdc29d56 rhg: do not try to open a nodemap for an inline index Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48211 diff changeset	115 NodeMapDocket::read_from_file(repo, index_path)?.map(
5e77bdc29d56 rhg: do not try to open a nodemap for an inline index Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48211 diff changeset	116 \|(docket, data)\| {
5e77bdc29d56 rhg: do not try to open a nodemap for an inline index Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48211 diff changeset	117 nodemap::NodeTree::load_bytes(
5e77bdc29d56 rhg: do not try to open a nodemap for an inline index Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48211 diff changeset	118 Box::new(data),
5e77bdc29d56 rhg: do not try to open a nodemap for an inline index Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48211 diff changeset	119 docket.data_length,
5e77bdc29d56 rhg: do not try to open a nodemap for an inline index Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48211 diff changeset	120 )
5e77bdc29d56 rhg: do not try to open a nodemap for an inline index Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48211 diff changeset	121 },
5e77bdc29d56 rhg: do not try to open a nodemap for an inline index Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48211 diff changeset	122 )
5e77bdc29d56 rhg: do not try to open a nodemap for an inline index Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48211 diff changeset	123 };
46091 9eb07ab3f2d4 rhg: use persistent nodemap when available Simon Sapin <simon-commits@exyr.org> parents: 46037 diff changeset	124
9eb07ab3f2d4 rhg: use persistent nodemap when available Simon Sapin <simon-commits@exyr.org> parents: 46037 diff changeset	125 Ok(Revlog {
9eb07ab3f2d4 rhg: use persistent nodemap when available Simon Sapin <simon-commits@exyr.org> parents: 46037 diff changeset	126 index,
9eb07ab3f2d4 rhg: use persistent nodemap when available Simon Sapin <simon-commits@exyr.org> parents: 46037 diff changeset	127 data_bytes,
9eb07ab3f2d4 rhg: use persistent nodemap when available Simon Sapin <simon-commits@exyr.org> parents: 46037 diff changeset	128 nodemap,
9eb07ab3f2d4 rhg: use persistent nodemap when available Simon Sapin <simon-commits@exyr.org> parents: 46037 diff changeset	129 })
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	130 }
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	131
45540 4f11a67a12fb hg-core: add `Revlog.get_node_rev` Antoine Cezar <antoine.cezar@octobus.net> parents: 45537 diff changeset	132 /// Return number of entries of the `Revlog`.
4f11a67a12fb hg-core: add `Revlog.get_node_rev` Antoine Cezar <antoine.cezar@octobus.net> parents: 45537 diff changeset	133 pub fn len(&self) -> usize {
45604 900b9b79b99c hg-core: make `Index` owner of its bytes (D8958#inline-14994 followup 1/2) Antoine cezar<acezar@chwitlabs.fr> parents: 45598 diff changeset	134 self.index.len()
45540 4f11a67a12fb hg-core: add `Revlog.get_node_rev` Antoine Cezar <antoine.cezar@octobus.net> parents: 45537 diff changeset	135 }
4f11a67a12fb hg-core: add `Revlog.get_node_rev` Antoine Cezar <antoine.cezar@octobus.net> parents: 45537 diff changeset	136
4f11a67a12fb hg-core: add `Revlog.get_node_rev` Antoine Cezar <antoine.cezar@octobus.net> parents: 45537 diff changeset	137 /// Returns `true` if the `Revlog` has zero `entries`.
4f11a67a12fb hg-core: add `Revlog.get_node_rev` Antoine Cezar <antoine.cezar@octobus.net> parents: 45537 diff changeset	138 pub fn is_empty(&self) -> bool {
45604 900b9b79b99c hg-core: make `Index` owner of its bytes (D8958#inline-14994 followup 1/2) Antoine cezar<acezar@chwitlabs.fr> parents: 45598 diff changeset	139 self.index.is_empty()
45540 4f11a67a12fb hg-core: add `Revlog.get_node_rev` Antoine Cezar <antoine.cezar@octobus.net> parents: 45537 diff changeset	140 }
4f11a67a12fb hg-core: add `Revlog.get_node_rev` Antoine Cezar <antoine.cezar@octobus.net> parents: 45537 diff changeset	141
47997 87e3f878e65f rust: Rename get_node methods to data_for_node, get_rev to data_for_rev Simon Sapin <simon.sapin@octobus.net> parents: 47996 diff changeset	142 /// Returns the node ID for the given revision number, if it exists in this
87e3f878e65f rust: Rename get_node methods to data_for_node, get_rev to data_for_rev Simon Sapin <simon.sapin@octobus.net> parents: 47996 diff changeset	143 /// revlog
47995 6c653d9d41b8 rust: Make private the `index` field of the `Revlog` struct Simon Sapin <simon.sapin@octobus.net> parents: 47991 diff changeset	144 pub fn node_from_rev(&self, rev: Revision) -> Option<&Node> {
48248 f8dc78716ad2 rhg: fix `hg cat` interaction with null revision Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48239 diff changeset	145 if rev == NULL_REVISION {
f8dc78716ad2 rhg: fix `hg cat` interaction with null revision Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48239 diff changeset	146 return Some(&NULL_NODE);
f8dc78716ad2 rhg: fix `hg cat` interaction with null revision Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48239 diff changeset	147 }
47995 6c653d9d41b8 rust: Make private the `index` field of the `Revlog` struct Simon Sapin <simon.sapin@octobus.net> parents: 47991 diff changeset	148 Some(self.index.get_entry(rev)?.hash())
6c653d9d41b8 rust: Make private the `index` field of the `Revlog` struct Simon Sapin <simon.sapin@octobus.net> parents: 47991 diff changeset	149 }
6c653d9d41b8 rust: Make private the `index` field of the `Revlog` struct Simon Sapin <simon.sapin@octobus.net> parents: 47991 diff changeset	150
47997 87e3f878e65f rust: Rename get_node methods to data_for_node, get_rev to data_for_rev Simon Sapin <simon.sapin@octobus.net> parents: 47996 diff changeset	151 /// Return the revision number for the given node ID, if it exists in this
87e3f878e65f rust: Rename get_node methods to data_for_node, get_rev to data_for_rev Simon Sapin <simon.sapin@octobus.net> parents: 47996 diff changeset	152 /// revlog
45540 4f11a67a12fb hg-core: add `Revlog.get_node_rev` Antoine Cezar <antoine.cezar@octobus.net> parents: 45537 diff changeset	153 #[timed]
47996 6f579618ea7b rust: Rename the `Revlog::get_node_rev` method to `rev_from_node` Simon Sapin <simon.sapin@octobus.net> parents: 47995 diff changeset	154 pub fn rev_from_node(
46037 88e741bf2d93 rust: use NodePrefix::from_hex instead of hex::decode directly Simon Sapin <simon-commits@exyr.org> parents: 46036 diff changeset	155 &self,
46499 645ee7225fab rust: Make NodePrefix allocation-free and Copy, remove NodePrefixRef Simon Sapin <simon.sapin@octobus.net> parents: 46462 diff changeset	156 node: NodePrefix,
46037 88e741bf2d93 rust: use NodePrefix::from_hex instead of hex::decode directly Simon Sapin <simon-commits@exyr.org> parents: 46036 diff changeset	157 ) -> Result<Revision, RevlogError> {
47990 8c29af0f6d6e rhg: Align with Python on some revset parsing corner cases Simon Sapin <simon.sapin@octobus.net> parents: 47386 diff changeset	158 if node.is_prefix_of(&NULL_NODE) {
8c29af0f6d6e rhg: Align with Python on some revset parsing corner cases Simon Sapin <simon.sapin@octobus.net> parents: 47386 diff changeset	159 return Ok(NULL_REVISION);
8c29af0f6d6e rhg: Align with Python on some revset parsing corner cases Simon Sapin <simon.sapin@octobus.net> parents: 47386 diff changeset	160 }
8c29af0f6d6e rhg: Align with Python on some revset parsing corner cases Simon Sapin <simon.sapin@octobus.net> parents: 47386 diff changeset	161
46091 9eb07ab3f2d4 rhg: use persistent nodemap when available Simon Sapin <simon-commits@exyr.org> parents: 46037 diff changeset	162 if let Some(nodemap) = &self.nodemap {
9eb07ab3f2d4 rhg: use persistent nodemap when available Simon Sapin <simon-commits@exyr.org> parents: 46037 diff changeset	163 return nodemap
46511 43d63979a75e rust: use HgError in RevlogError and Vfs Simon Sapin <simon.sapin@octobus.net> parents: 46501 diff changeset	164 .find_bin(&self.index, node)?
46091 9eb07ab3f2d4 rhg: use persistent nodemap when available Simon Sapin <simon-commits@exyr.org> parents: 46037 diff changeset	165 .ok_or(RevlogError::InvalidRevision);
9eb07ab3f2d4 rhg: use persistent nodemap when available Simon Sapin <simon-commits@exyr.org> parents: 46037 diff changeset	166 }
9eb07ab3f2d4 rhg: use persistent nodemap when available Simon Sapin <simon-commits@exyr.org> parents: 46037 diff changeset	167
9eb07ab3f2d4 rhg: use persistent nodemap when available Simon Sapin <simon-commits@exyr.org> parents: 46037 diff changeset	168 // Fallback to linear scan when a persistent nodemap is not present.
9eb07ab3f2d4 rhg: use persistent nodemap when available Simon Sapin <simon-commits@exyr.org> parents: 46037 diff changeset	169 // This happens when the persistent-nodemap experimental feature is not
9eb07ab3f2d4 rhg: use persistent nodemap when available Simon Sapin <simon-commits@exyr.org> parents: 46037 diff changeset	170 // enabled, or for small revlogs.
9eb07ab3f2d4 rhg: use persistent nodemap when available Simon Sapin <simon-commits@exyr.org> parents: 46037 diff changeset	171 //
9eb07ab3f2d4 rhg: use persistent nodemap when available Simon Sapin <simon-commits@exyr.org> parents: 46037 diff changeset	172 // TODO: consider building a non-persistent nodemap in memory to
9eb07ab3f2d4 rhg: use persistent nodemap when available Simon Sapin <simon-commits@exyr.org> parents: 46037 diff changeset	173 // optimize these cases.
46036 8d6164098782 rhg: allow specifying a changeset ID prefix Simon Sapin <simon-commits@exyr.org> parents: 45825 diff changeset	174 let mut found_by_prefix = None;
45540 4f11a67a12fb hg-core: add `Revlog.get_node_rev` Antoine Cezar <antoine.cezar@octobus.net> parents: 45537 diff changeset	175 for rev in (0..self.len() as Revision).rev() {
4f11a67a12fb hg-core: add `Revlog.get_node_rev` Antoine Cezar <antoine.cezar@octobus.net> parents: 45537 diff changeset	176 let index_entry =
46511 43d63979a75e rust: use HgError in RevlogError and Vfs Simon Sapin <simon.sapin@octobus.net> parents: 46501 diff changeset	177 self.index.get_entry(rev).ok_or(HgError::corrupted(
43d63979a75e rust: use HgError in RevlogError and Vfs Simon Sapin <simon.sapin@octobus.net> parents: 46501 diff changeset	178 "revlog references a revision not in the index",
43d63979a75e rust: use HgError in RevlogError and Vfs Simon Sapin <simon.sapin@octobus.net> parents: 46501 diff changeset	179 ))?;
46037 88e741bf2d93 rust: use NodePrefix::from_hex instead of hex::decode directly Simon Sapin <simon-commits@exyr.org> parents: 46036 diff changeset	180 if node == *index_entry.hash() {
45540 4f11a67a12fb hg-core: add `Revlog.get_node_rev` Antoine Cezar <antoine.cezar@octobus.net> parents: 45537 diff changeset	181 return Ok(rev);
4f11a67a12fb hg-core: add `Revlog.get_node_rev` Antoine Cezar <antoine.cezar@octobus.net> parents: 45537 diff changeset	182 }
46037 88e741bf2d93 rust: use NodePrefix::from_hex instead of hex::decode directly Simon Sapin <simon-commits@exyr.org> parents: 46036 diff changeset	183 if node.is_prefix_of(index_entry.hash()) {
46036 8d6164098782 rhg: allow specifying a changeset ID prefix Simon Sapin <simon-commits@exyr.org> parents: 45825 diff changeset	184 if found_by_prefix.is_some() {
8d6164098782 rhg: allow specifying a changeset ID prefix Simon Sapin <simon-commits@exyr.org> parents: 45825 diff changeset	185 return Err(RevlogError::AmbiguousPrefix);
8d6164098782 rhg: allow specifying a changeset ID prefix Simon Sapin <simon-commits@exyr.org> parents: 45825 diff changeset	186 }
8d6164098782 rhg: allow specifying a changeset ID prefix Simon Sapin <simon-commits@exyr.org> parents: 45825 diff changeset	187 found_by_prefix = Some(rev)
8d6164098782 rhg: allow specifying a changeset ID prefix Simon Sapin <simon-commits@exyr.org> parents: 45825 diff changeset	188 }
45540 4f11a67a12fb hg-core: add `Revlog.get_node_rev` Antoine Cezar <antoine.cezar@octobus.net> parents: 45537 diff changeset	189 }
46036 8d6164098782 rhg: allow specifying a changeset ID prefix Simon Sapin <simon-commits@exyr.org> parents: 45825 diff changeset	190 found_by_prefix.ok_or(RevlogError::InvalidRevision)
45540 4f11a67a12fb hg-core: add `Revlog.get_node_rev` Antoine Cezar <antoine.cezar@octobus.net> parents: 45537 diff changeset	191 }
4f11a67a12fb hg-core: add `Revlog.get_node_rev` Antoine Cezar <antoine.cezar@octobus.net> parents: 45537 diff changeset	192
46501 4b381dbbf8b7 rhg: centralize parsing of `--rev` CLI arguments Simon Sapin <simon.sapin@octobus.net> parents: 46499 diff changeset	193 /// Returns whether the given revision exists in this revlog.
4b381dbbf8b7 rhg: centralize parsing of `--rev` CLI arguments Simon Sapin <simon.sapin@octobus.net> parents: 46499 diff changeset	194 pub fn has_rev(&self, rev: Revision) -> bool {
4b381dbbf8b7 rhg: centralize parsing of `--rev` CLI arguments Simon Sapin <simon.sapin@octobus.net> parents: 46499 diff changeset	195 self.index.get_entry(rev).is_some()
4b381dbbf8b7 rhg: centralize parsing of `--rev` CLI arguments Simon Sapin <simon.sapin@octobus.net> parents: 46499 diff changeset	196 }
4b381dbbf8b7 rhg: centralize parsing of `--rev` CLI arguments Simon Sapin <simon.sapin@octobus.net> parents: 46499 diff changeset	197
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	198 /// Return the full data associated to a revision.
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	199 ///
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	200 /// All entries required to build the final data out of deltas will be
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	201 /// retrieved as needed, and the deltas will be applied to the inital
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	202 /// snapshot to rebuild the final data.
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	203 #[timed]
48570 f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	204 pub fn get_rev_data(
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	205 &self,
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	206 rev: Revision,
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	207 ) -> Result<Cow<[u8]>, RevlogError> {
48210 61ce70fd420e rhg: handle null changelog and manifest revisions Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48095 diff changeset	208 if rev == NULL_REVISION {
48570 f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	209 return Ok(Cow::Borrowed(&[]));
48210 61ce70fd420e rhg: handle null changelog and manifest revisions Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48095 diff changeset	210 };
48571 35c47015b9b7 rhg: Expose FilelogEntry that wraps RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48570 diff changeset	211 Ok(self.get_entry(rev)?.data()?)
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	212 }
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	213
45537 b0d6309ff50c hg-core: check data integrity in `Revlog` Antoine Cezar <antoine.cezar@octobus.net> parents: 45532 diff changeset	214 /// Check the hash of some given data against the recorded hash.
b0d6309ff50c hg-core: check data integrity in `Revlog` Antoine Cezar <antoine.cezar@octobus.net> parents: 45532 diff changeset	215 pub fn check_hash(
b0d6309ff50c hg-core: check data integrity in `Revlog` Antoine Cezar <antoine.cezar@octobus.net> parents: 45532 diff changeset	216 &self,
b0d6309ff50c hg-core: check data integrity in `Revlog` Antoine Cezar <antoine.cezar@octobus.net> parents: 45532 diff changeset	217 p1: Revision,
b0d6309ff50c hg-core: check data integrity in `Revlog` Antoine Cezar <antoine.cezar@octobus.net> parents: 45532 diff changeset	218 p2: Revision,
b0d6309ff50c hg-core: check data integrity in `Revlog` Antoine Cezar <antoine.cezar@octobus.net> parents: 45532 diff changeset	219 expected: &[u8],
b0d6309ff50c hg-core: check data integrity in `Revlog` Antoine Cezar <antoine.cezar@octobus.net> parents: 45532 diff changeset	220 data: &[u8],
b0d6309ff50c hg-core: check data integrity in `Revlog` Antoine Cezar <antoine.cezar@octobus.net> parents: 45532 diff changeset	221 ) -> bool {
45604 900b9b79b99c hg-core: make `Index` owner of its bytes (D8958#inline-14994 followup 1/2) Antoine cezar<acezar@chwitlabs.fr> parents: 45598 diff changeset	222 let e1 = self.index.get_entry(p1);
45537 b0d6309ff50c hg-core: check data integrity in `Revlog` Antoine Cezar <antoine.cezar@octobus.net> parents: 45532 diff changeset	223 let h1 = match e1 {
b0d6309ff50c hg-core: check data integrity in `Revlog` Antoine Cezar <antoine.cezar@octobus.net> parents: 45532 diff changeset	224 Some(ref entry) => entry.hash(),
46037 88e741bf2d93 rust: use NodePrefix::from_hex instead of hex::decode directly Simon Sapin <simon-commits@exyr.org> parents: 46036 diff changeset	225 None => &NULL_NODE,
45537 b0d6309ff50c hg-core: check data integrity in `Revlog` Antoine Cezar <antoine.cezar@octobus.net> parents: 45532 diff changeset	226 };
45604 900b9b79b99c hg-core: make `Index` owner of its bytes (D8958#inline-14994 followup 1/2) Antoine cezar<acezar@chwitlabs.fr> parents: 45598 diff changeset	227 let e2 = self.index.get_entry(p2);
45537 b0d6309ff50c hg-core: check data integrity in `Revlog` Antoine Cezar <antoine.cezar@octobus.net> parents: 45532 diff changeset	228 let h2 = match e2 {
b0d6309ff50c hg-core: check data integrity in `Revlog` Antoine Cezar <antoine.cezar@octobus.net> parents: 45532 diff changeset	229 Some(ref entry) => entry.hash(),
46037 88e741bf2d93 rust: use NodePrefix::from_hex instead of hex::decode directly Simon Sapin <simon-commits@exyr.org> parents: 46036 diff changeset	230 None => &NULL_NODE,
45537 b0d6309ff50c hg-core: check data integrity in `Revlog` Antoine Cezar <antoine.cezar@octobus.net> parents: 45532 diff changeset	231 };
b0d6309ff50c hg-core: check data integrity in `Revlog` Antoine Cezar <antoine.cezar@octobus.net> parents: 45532 diff changeset	232
47386 fad504cfc94b rust: Use a maintained crate for SHA-1 hashing Simon Sapin <simon.sapin@octobus.net> parents: 46821 diff changeset	233 &hash(data, h1.as_bytes(), h2.as_bytes()) == expected
45537 b0d6309ff50c hg-core: check data integrity in `Revlog` Antoine Cezar <antoine.cezar@octobus.net> parents: 45532 diff changeset	234 }
b0d6309ff50c hg-core: check data integrity in `Revlog` Antoine Cezar <antoine.cezar@octobus.net> parents: 45532 diff changeset	235
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	236 /// Build the full data of a revision out its snapshot
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	237 /// and its deltas.
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	238 #[timed]
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	239 fn build_data_from_deltas(
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	240 snapshot: RevlogEntry,
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	241 deltas: &[RevlogEntry],
48571 35c47015b9b7 rhg: Expose FilelogEntry that wraps RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48570 diff changeset	242 ) -> Result<Vec<u8>, HgError> {
48569 20d0d896183e rhg: Rename some revlog-related types and methods Simon Sapin <simon.sapin@octobus.net> parents: 48497 diff changeset	243 let snapshot = snapshot.data_chunk()?;
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	244 let deltas = deltas
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	245 .iter()
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	246 .rev()
48569 20d0d896183e rhg: Rename some revlog-related types and methods Simon Sapin <simon.sapin@octobus.net> parents: 48497 diff changeset	247 .map(RevlogEntry::data_chunk)
48571 35c47015b9b7 rhg: Expose FilelogEntry that wraps RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48570 diff changeset	248 .collect::<Result<Vec<_>, _>>()?;
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	249 let patches: Vec<_> =
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	250 deltas.iter().map(\|d\| patch::PatchList::new(d)).collect();
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	251 let patch = patch::fold_patch_lists(&patches);
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	252 Ok(patch.apply(&snapshot))
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	253 }
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	254
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	255 /// Return the revlog data.
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	256 fn data(&self) -> &[u8] {
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	257 match self.data_bytes {
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	258 Some(ref data_bytes) => &data_bytes,
45604 900b9b79b99c hg-core: make `Index` owner of its bytes (D8958#inline-14994 followup 1/2) Antoine cezar<acezar@chwitlabs.fr> parents: 45598 diff changeset	259 None => panic!(
900b9b79b99c hg-core: make `Index` owner of its bytes (D8958#inline-14994 followup 1/2) Antoine cezar<acezar@chwitlabs.fr> parents: 45598 diff changeset	260 "forgot to load the data or trying to access inline data"
900b9b79b99c hg-core: make `Index` owner of its bytes (D8958#inline-14994 followup 1/2) Antoine cezar<acezar@chwitlabs.fr> parents: 45598 diff changeset	261 ),
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	262 }
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	263 }
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	264
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	265 /// Get an entry of the revlog.
48571 35c47015b9b7 rhg: Expose FilelogEntry that wraps RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48570 diff changeset	266 pub fn get_entry(
35c47015b9b7 rhg: Expose FilelogEntry that wraps RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48570 diff changeset	267 &self,
35c47015b9b7 rhg: Expose FilelogEntry that wraps RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48570 diff changeset	268 rev: Revision,
35c47015b9b7 rhg: Expose FilelogEntry that wraps RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48570 diff changeset	269 ) -> Result<RevlogEntry, RevlogError> {
45604 900b9b79b99c hg-core: make `Index` owner of its bytes (D8958#inline-14994 followup 1/2) Antoine cezar<acezar@chwitlabs.fr> parents: 45598 diff changeset	270 let index_entry = self
900b9b79b99c hg-core: make `Index` owner of its bytes (D8958#inline-14994 followup 1/2) Antoine cezar<acezar@chwitlabs.fr> parents: 45598 diff changeset	271 .index
900b9b79b99c hg-core: make `Index` owner of its bytes (D8958#inline-14994 followup 1/2) Antoine cezar<acezar@chwitlabs.fr> parents: 45598 diff changeset	272 .get_entry(rev)
900b9b79b99c hg-core: make `Index` owner of its bytes (D8958#inline-14994 followup 1/2) Antoine cezar<acezar@chwitlabs.fr> parents: 45598 diff changeset	273 .ok_or(RevlogError::InvalidRevision)?;
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	274 let start = index_entry.offset();
48572 0a4ac916673e rhg: RevlogEntry::uncompressed_len is signed Simon Sapin <simon.sapin@octobus.net> parents: 48571 diff changeset	275 let end = start + index_entry.compressed_len() as usize;
45604 900b9b79b99c hg-core: make `Index` owner of its bytes (D8958#inline-14994 followup 1/2) Antoine cezar<acezar@chwitlabs.fr> parents: 45598 diff changeset	276 let data = if self.index.is_inline() {
900b9b79b99c hg-core: make `Index` owner of its bytes (D8958#inline-14994 followup 1/2) Antoine cezar<acezar@chwitlabs.fr> parents: 45598 diff changeset	277 self.index.data(start, end)
900b9b79b99c hg-core: make `Index` owner of its bytes (D8958#inline-14994 followup 1/2) Antoine cezar<acezar@chwitlabs.fr> parents: 45598 diff changeset	278 } else {
900b9b79b99c hg-core: make `Index` owner of its bytes (D8958#inline-14994 followup 1/2) Antoine cezar<acezar@chwitlabs.fr> parents: 45598 diff changeset	279 &self.data()[start..end]
900b9b79b99c hg-core: make `Index` owner of its bytes (D8958#inline-14994 followup 1/2) Antoine cezar<acezar@chwitlabs.fr> parents: 45598 diff changeset	280 };
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	281 let entry = RevlogEntry {
48570 f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	282 revlog: self,
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	283 rev,
45604 900b9b79b99c hg-core: make `Index` owner of its bytes (D8958#inline-14994 followup 1/2) Antoine cezar<acezar@chwitlabs.fr> parents: 45598 diff changeset	284 bytes: data,
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	285 compressed_len: index_entry.compressed_len(),
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	286 uncompressed_len: index_entry.uncompressed_len(),
48497 96ea4db4741b rhg: fix a crash on non-generaldelta revlogs Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48496 diff changeset	287 base_rev_or_base_of_delta_chain: if index_entry
96ea4db4741b rhg: fix a crash on non-generaldelta revlogs Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48496 diff changeset	288 .base_revision_or_base_of_delta_chain()
96ea4db4741b rhg: fix a crash on non-generaldelta revlogs Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48496 diff changeset	289 == rev
96ea4db4741b rhg: fix a crash on non-generaldelta revlogs Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48496 diff changeset	290 {
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	291 None
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	292 } else {
48497 96ea4db4741b rhg: fix a crash on non-generaldelta revlogs Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48496 diff changeset	293 Some(index_entry.base_revision_or_base_of_delta_chain())
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	294 },
48573 faa243f345cc rhg: Store p1, p2, and hash in RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48572 diff changeset	295 p1: index_entry.p1(),
faa243f345cc rhg: Store p1, p2, and hash in RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48572 diff changeset	296 p2: index_entry.p2(),
48575 e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	297 flags: index_entry.flags(),
48573 faa243f345cc rhg: Store p1, p2, and hash in RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48572 diff changeset	298 hash: *index_entry.hash(),
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	299 };
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	300 Ok(entry)
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	301 }
48497 96ea4db4741b rhg: fix a crash on non-generaldelta revlogs Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48496 diff changeset	302
96ea4db4741b rhg: fix a crash on non-generaldelta revlogs Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48496 diff changeset	303 /// when resolving internal references within revlog, any errors
96ea4db4741b rhg: fix a crash on non-generaldelta revlogs Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48496 diff changeset	304 /// should be reported as corruption, instead of e.g. "invalid revision"
96ea4db4741b rhg: fix a crash on non-generaldelta revlogs Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48496 diff changeset	305 fn get_entry_internal(
96ea4db4741b rhg: fix a crash on non-generaldelta revlogs Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48496 diff changeset	306 &self,
96ea4db4741b rhg: fix a crash on non-generaldelta revlogs Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48496 diff changeset	307 rev: Revision,
48571 35c47015b9b7 rhg: Expose FilelogEntry that wraps RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48570 diff changeset	308 ) -> Result<RevlogEntry, HgError> {
35c47015b9b7 rhg: Expose FilelogEntry that wraps RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48570 diff changeset	309 return self.get_entry(rev).map_err(\|_\| corrupted());
48497 96ea4db4741b rhg: fix a crash on non-generaldelta revlogs Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48496 diff changeset	310 }
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	311 }
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	312
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	313 /// The revlog entry's bytes and the necessary informations to extract
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	314 /// the entry's data.
48570 f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	315 #[derive(Clone)]
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	316 pub struct RevlogEntry<'a> {
48570 f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	317 revlog: &'a Revlog,
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	318 rev: Revision,
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	319 bytes: &'a [u8],
48572 0a4ac916673e rhg: RevlogEntry::uncompressed_len is signed Simon Sapin <simon.sapin@octobus.net> parents: 48571 diff changeset	320 compressed_len: u32,
0a4ac916673e rhg: RevlogEntry::uncompressed_len is signed Simon Sapin <simon.sapin@octobus.net> parents: 48571 diff changeset	321 uncompressed_len: i32,
48497 96ea4db4741b rhg: fix a crash on non-generaldelta revlogs Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48496 diff changeset	322 base_rev_or_base_of_delta_chain: Option<Revision>,
48573 faa243f345cc rhg: Store p1, p2, and hash in RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48572 diff changeset	323 p1: Revision,
faa243f345cc rhg: Store p1, p2, and hash in RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48572 diff changeset	324 p2: Revision,
48575 e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	325 flags: u16,
48573 faa243f345cc rhg: Store p1, p2, and hash in RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48572 diff changeset	326 hash: Node,
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	327 }
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	328
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	329 impl<'a> RevlogEntry<'a> {
48095 fecfea658127 hg-core: silence dead-code warning by adding RevlogEntry::revion() accessor Martin von Zweigbergk <martinvonz@google.com> parents: 47997 diff changeset	330 pub fn revision(&self) -> Revision {
fecfea658127 hg-core: silence dead-code warning by adding RevlogEntry::revion() accessor Martin von Zweigbergk <martinvonz@google.com> parents: 47997 diff changeset	331 self.rev
fecfea658127 hg-core: silence dead-code warning by adding RevlogEntry::revion() accessor Martin von Zweigbergk <martinvonz@google.com> parents: 47997 diff changeset	332 }
fecfea658127 hg-core: silence dead-code warning by adding RevlogEntry::revion() accessor Martin von Zweigbergk <martinvonz@google.com> parents: 47997 diff changeset	333
49123 5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	334 pub fn node(&self) -> &Node {
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	335 &self.hash
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	336 }
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	337
48572 0a4ac916673e rhg: RevlogEntry::uncompressed_len is signed Simon Sapin <simon.sapin@octobus.net> parents: 48571 diff changeset	338 pub fn uncompressed_len(&self) -> Option<u32> {
0a4ac916673e rhg: RevlogEntry::uncompressed_len is signed Simon Sapin <simon.sapin@octobus.net> parents: 48571 diff changeset	339 u32::try_from(self.uncompressed_len).ok()
0a4ac916673e rhg: RevlogEntry::uncompressed_len is signed Simon Sapin <simon.sapin@octobus.net> parents: 48571 diff changeset	340 }
0a4ac916673e rhg: RevlogEntry::uncompressed_len is signed Simon Sapin <simon.sapin@octobus.net> parents: 48571 diff changeset	341
48575 e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	342 pub fn has_p1(&self) -> bool {
e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	343 self.p1 != NULL_REVISION
e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	344 }
e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	345
49123 5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	346 pub fn p1_entry(&self) -> Result<Option<RevlogEntry>, RevlogError> {
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	347 if self.p1 == NULL_REVISION {
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	348 Ok(None)
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	349 } else {
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	350 Ok(Some(self.revlog.get_entry(self.p1)?))
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	351 }
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	352 }
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	353
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	354 pub fn p2_entry(&self) -> Result<Option<RevlogEntry>, RevlogError> {
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	355 if self.p2 == NULL_REVISION {
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	356 Ok(None)
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	357 } else {
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	358 Ok(Some(self.revlog.get_entry(self.p2)?))
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	359 }
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	360 }
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	361
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	362 pub fn p1(&self) -> Option<Revision> {
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	363 if self.p1 == NULL_REVISION {
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	364 None
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	365 } else {
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	366 Some(self.p1)
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	367 }
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	368 }
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	369
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	370 pub fn p2(&self) -> Option<Revision> {
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	371 if self.p2 == NULL_REVISION {
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	372 None
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	373 } else {
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	374 Some(self.p2)
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	375 }
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	376 }
5d205e476057 rust-revlog: add methods for getting parent revs and entries Martin von Zweigbergk <martinvonz@google.com> parents: 48575 diff changeset	377
48575 e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	378 pub fn is_cencored(&self) -> bool {
e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	379 (self.flags & REVISION_FLAG_CENSORED) != 0
e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	380 }
e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	381
e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	382 pub fn has_length_affecting_flag_processor(&self) -> bool {
e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	383 // Relevant Python code: revlog.size()
e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	384 // note: ELLIPSIS is known to not change the content
e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	385 (self.flags & (REVIDX_KNOWN_FLAGS ^ REVISION_FLAG_ELLIPSIS)) != 0
e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	386 }
e91aa800ae5b rhg: desambiguate status without decompressing filelog if possible Simon Sapin <simon.sapin@octobus.net> parents: 48573 diff changeset	387
48570 f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	388 /// The data for this entry, after resolving deltas if any.
48571 35c47015b9b7 rhg: Expose FilelogEntry that wraps RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48570 diff changeset	389 pub fn data(&self) -> Result<Cow<'a, [u8]>, HgError> {
48570 f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	390 let mut entry = self.clone();
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	391 let mut delta_chain = vec![];
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	392
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	393 // The meaning of `base_rev_or_base_of_delta_chain` depends on
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	394 // generaldelta. See the doc on `ENTRY_DELTA_BASE` in
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	395 // `mercurial/revlogutils/constants.py` and the code in
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	396 // [_chaininfo] and in [index_deltachain].
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	397 let uses_generaldelta = self.revlog.index.uses_generaldelta();
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	398 while let Some(base_rev) = entry.base_rev_or_base_of_delta_chain {
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	399 let base_rev = if uses_generaldelta {
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	400 base_rev
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	401 } else {
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	402 entry.rev - 1
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	403 };
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	404 delta_chain.push(entry);
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	405 entry = self.revlog.get_entry_internal(base_rev)?;
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	406 }
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	407
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	408 let data = if delta_chain.is_empty() {
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	409 entry.data_chunk()?
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	410 } else {
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	411 Revlog::build_data_from_deltas(entry, &delta_chain)?.into()
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	412 };
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	413
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	414 if self.revlog.check_hash(
48573 faa243f345cc rhg: Store p1, p2, and hash in RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48572 diff changeset	415 self.p1,
faa243f345cc rhg: Store p1, p2, and hash in RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48572 diff changeset	416 self.p2,
faa243f345cc rhg: Store p1, p2, and hash in RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48572 diff changeset	417 self.hash.as_bytes(),
48570 f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	418 &data,
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	419 ) {
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	420 Ok(data)
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	421 } else {
48571 35c47015b9b7 rhg: Expose FilelogEntry that wraps RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48570 diff changeset	422 Err(corrupted())
48570 f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	423 }
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	424 }
f2f57724d4eb rhg: Add RevlogEntry::data that does delta resolution Simon Sapin <simon.sapin@octobus.net> parents: 48569 diff changeset	425
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	426 /// Extract the data contained in the entry.
48569 20d0d896183e rhg: Rename some revlog-related types and methods Simon Sapin <simon.sapin@octobus.net> parents: 48497 diff changeset	427 /// This may be a delta. (See `is_delta`.)
48571 35c47015b9b7 rhg: Expose FilelogEntry that wraps RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48570 diff changeset	428 fn data_chunk(&self) -> Result<Cow<'a, [u8]>, HgError> {
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	429 if self.bytes.is_empty() {
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	430 return Ok(Cow::Borrowed(&[]));
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	431 }
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	432 match self.bytes[0] {
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	433 // Revision data is the entirety of the entry, including this
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	434 // header.
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	435 b'\0' => Ok(Cow::Borrowed(self.bytes)),
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	436 // Raw revision data follows.
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	437 b'u' => Ok(Cow::Borrowed(&self.bytes[1..])),
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	438 // zlib (RFC 1950) data.
45598 497657895b54 hg-core: return `Err` on decompression error (D8958#inline-15004 followup) Antoine cezar<acezar@chwitlabs.fr> parents: 45542 diff changeset	439 b'x' => Ok(Cow::Owned(self.uncompressed_zlib_data()?)),
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	440 // zstd data.
45598 497657895b54 hg-core: return `Err` on decompression error (D8958#inline-15004 followup) Antoine cezar<acezar@chwitlabs.fr> parents: 45542 diff changeset	441 b'\x28' => Ok(Cow::Owned(self.uncompressed_zstd_data()?)),
46511 43d63979a75e rust: use HgError in RevlogError and Vfs Simon Sapin <simon.sapin@octobus.net> parents: 46501 diff changeset	442 // A proper new format should have had a repo/store requirement.
48571 35c47015b9b7 rhg: Expose FilelogEntry that wraps RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48570 diff changeset	443 _format_type => Err(corrupted()),
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	444 }
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	445 }
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	446
48571 35c47015b9b7 rhg: Expose FilelogEntry that wraps RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48570 diff changeset	447 fn uncompressed_zlib_data(&self) -> Result<Vec<u8>, HgError> {
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	448 let mut decoder = ZlibDecoder::new(self.bytes);
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	449 if self.is_delta() {
48572 0a4ac916673e rhg: RevlogEntry::uncompressed_len is signed Simon Sapin <simon.sapin@octobus.net> parents: 48571 diff changeset	450 let mut buf = Vec::with_capacity(self.compressed_len as usize);
48571 35c47015b9b7 rhg: Expose FilelogEntry that wraps RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48570 diff changeset	451 decoder.read_to_end(&mut buf).map_err(\|_\| corrupted())?;
45598 497657895b54 hg-core: return `Err` on decompression error (D8958#inline-15004 followup) Antoine cezar<acezar@chwitlabs.fr> parents: 45542 diff changeset	452 Ok(buf)
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	453 } else {
48572 0a4ac916673e rhg: RevlogEntry::uncompressed_len is signed Simon Sapin <simon.sapin@octobus.net> parents: 48571 diff changeset	454 let cap = self.uncompressed_len.max(0) as usize;
0a4ac916673e rhg: RevlogEntry::uncompressed_len is signed Simon Sapin <simon.sapin@octobus.net> parents: 48571 diff changeset	455 let mut buf = vec![0; cap];
48571 35c47015b9b7 rhg: Expose FilelogEntry that wraps RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48570 diff changeset	456 decoder.read_exact(&mut buf).map_err(\|_\| corrupted())?;
45598 497657895b54 hg-core: return `Err` on decompression error (D8958#inline-15004 followup) Antoine cezar<acezar@chwitlabs.fr> parents: 45542 diff changeset	457 Ok(buf)
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	458 }
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	459 }
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	460
48571 35c47015b9b7 rhg: Expose FilelogEntry that wraps RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48570 diff changeset	461 fn uncompressed_zstd_data(&self) -> Result<Vec<u8>, HgError> {
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	462 if self.is_delta() {
48572 0a4ac916673e rhg: RevlogEntry::uncompressed_len is signed Simon Sapin <simon.sapin@octobus.net> parents: 48571 diff changeset	463 let mut buf = Vec::with_capacity(self.compressed_len as usize);
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	464 zstd::stream::copy_decode(self.bytes, &mut buf)
48571 35c47015b9b7 rhg: Expose FilelogEntry that wraps RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48570 diff changeset	465 .map_err(\|_\| corrupted())?;
45598 497657895b54 hg-core: return `Err` on decompression error (D8958#inline-15004 followup) Antoine cezar<acezar@chwitlabs.fr> parents: 45542 diff changeset	466 Ok(buf)
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	467 } else {
48572 0a4ac916673e rhg: RevlogEntry::uncompressed_len is signed Simon Sapin <simon.sapin@octobus.net> parents: 48571 diff changeset	468 let cap = self.uncompressed_len.max(0) as usize;
0a4ac916673e rhg: RevlogEntry::uncompressed_len is signed Simon Sapin <simon.sapin@octobus.net> parents: 48571 diff changeset	469 let mut buf = vec![0; cap];
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	470 let len = zstd::block::decompress_to_buffer(self.bytes, &mut buf)
48571 35c47015b9b7 rhg: Expose FilelogEntry that wraps RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48570 diff changeset	471 .map_err(\|_\| corrupted())?;
48572 0a4ac916673e rhg: RevlogEntry::uncompressed_len is signed Simon Sapin <simon.sapin@octobus.net> parents: 48571 diff changeset	472 if len != self.uncompressed_len as usize {
48571 35c47015b9b7 rhg: Expose FilelogEntry that wraps RevlogEntry Simon Sapin <simon.sapin@octobus.net> parents: 48570 diff changeset	473 Err(corrupted())
45598 497657895b54 hg-core: return `Err` on decompression error (D8958#inline-15004 followup) Antoine cezar<acezar@chwitlabs.fr> parents: 45542 diff changeset	474 } else {
497657895b54 hg-core: return `Err` on decompression error (D8958#inline-15004 followup) Antoine cezar<acezar@chwitlabs.fr> parents: 45542 diff changeset	475 Ok(buf)
497657895b54 hg-core: return `Err` on decompression error (D8958#inline-15004 followup) Antoine cezar<acezar@chwitlabs.fr> parents: 45542 diff changeset	476 }
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	477 }
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	478 }
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	479
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	480 /// Tell if the entry is a snapshot or a delta
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	481 /// (influences on decompression).
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	482 fn is_delta(&self) -> bool {
48497 96ea4db4741b rhg: fix a crash on non-generaldelta revlogs Arseniy Alekseyev <aalekseyev@janestreet.com> parents: 48496 diff changeset	483 self.base_rev_or_base_of_delta_chain.is_some()
45532 26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	484 }
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	485 }
26c53ee51c68 hg-core: Add a limited read only `revlog` implementation Antoine Cezar <antoine.cezar@octobus.net> parents: diff changeset	486
45537 b0d6309ff50c hg-core: check data integrity in `Revlog` Antoine Cezar <antoine.cezar@octobus.net> parents: 45532 diff changeset	487 /// Calculate the hash of a revision given its data and its parents.
47386 fad504cfc94b rust: Use a maintained crate for SHA-1 hashing Simon Sapin <simon.sapin@octobus.net> parents: 46821 diff changeset	488 fn hash(
fad504cfc94b rust: Use a maintained crate for SHA-1 hashing Simon Sapin <simon.sapin@octobus.net> parents: 46821 diff changeset	489 data: &[u8],
fad504cfc94b rust: Use a maintained crate for SHA-1 hashing Simon Sapin <simon.sapin@octobus.net> parents: 46821 diff changeset	490 p1_hash: &[u8],
fad504cfc94b rust: Use a maintained crate for SHA-1 hashing Simon Sapin <simon.sapin@octobus.net> parents: 46821 diff changeset	491 p2_hash: &[u8],
fad504cfc94b rust: Use a maintained crate for SHA-1 hashing Simon Sapin <simon.sapin@octobus.net> parents: 46821 diff changeset	492 ) -> [u8; NODE_BYTES_LENGTH] {
45537 b0d6309ff50c hg-core: check data integrity in `Revlog` Antoine Cezar <antoine.cezar@octobus.net> parents: 45532 diff changeset	493 let mut hasher = Sha1::new();
b0d6309ff50c hg-core: check data integrity in `Revlog` Antoine Cezar <antoine.cezar@octobus.net> parents: 45532 diff changeset	494 let (a, b) = (p1_hash, p2_hash);
b0d6309ff50c hg-core: check data integrity in `Revlog` Antoine Cezar <antoine.cezar@octobus.net> parents: 45532 diff changeset	495 if a > b {
47386 fad504cfc94b rust: Use a maintained crate for SHA-1 hashing Simon Sapin <simon.sapin@octobus.net> parents: 46821 diff changeset	496 hasher.update(b);
fad504cfc94b rust: Use a maintained crate for SHA-1 hashing Simon Sapin <simon.sapin@octobus.net> parents: 46821 diff changeset	497 hasher.update(a);
45537 b0d6309ff50c hg-core: check data integrity in `Revlog` Antoine Cezar <antoine.cezar@octobus.net> parents: 45532 diff changeset	498 } else {
47386 fad504cfc94b rust: Use a maintained crate for SHA-1 hashing Simon Sapin <simon.sapin@octobus.net> parents: 46821 diff changeset	499 hasher.update(a);
fad504cfc94b rust: Use a maintained crate for SHA-1 hashing Simon Sapin <simon.sapin@octobus.net> parents: 46821 diff changeset	500 hasher.update(b);
45537 b0d6309ff50c hg-core: check data integrity in `Revlog` Antoine Cezar <antoine.cezar@octobus.net> parents: 45532 diff changeset	501 }
47386 fad504cfc94b rust: Use a maintained crate for SHA-1 hashing Simon Sapin <simon.sapin@octobus.net> parents: 46821 diff changeset	502 hasher.update(data);
fad504cfc94b rust: Use a maintained crate for SHA-1 hashing Simon Sapin <simon.sapin@octobus.net> parents: 46821 diff changeset	503 *hasher.finalize().as_ref()
45537 b0d6309ff50c hg-core: check data integrity in `Revlog` Antoine Cezar <antoine.cezar@octobus.net> parents: 45532 diff changeset	504 }

Mercurial > public > mercurial-scm > hg-stable

annotate rust/hg-core/src/revlog/revlog.rs @ 49123:5d205e476057