##// END OF EJS Templates
revlog: update data file record before index rename...
revlog: update data file record before index rename When migrating from inline to non-inline data storage, the data file is recorded initially as zero sized so that it is removed on failure. But the record has to be updated before the index is renamed, otherwise data is lost on rollback. Differential Revision: https://phab.mercurial-scm.org/D10725

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revset.rs
62 lines | 1.8 KiB | application/rls-services+xml | RustLexer
//! The revset query language
//!
//! <https://www.mercurial-scm.org/repo/hg/help/revsets>
use crate::errors::HgError;
use crate::repo::Repo;
use crate::revlog::changelog::Changelog;
use crate::revlog::revlog::{Revlog, RevlogError};
use crate::revlog::NodePrefix;
use crate::revlog::{Revision, NULL_REVISION, WORKING_DIRECTORY_HEX};
use crate::Node;
/// Resolve a query string into a single revision.
///
/// Only some of the revset language is implemented yet.
pub fn resolve_single(
input: &str,
repo: &Repo,
) -> Result<Revision, RevlogError> {
let changelog = Changelog::open(repo)?;
match resolve_rev_number_or_hex_prefix(input, &changelog.revlog) {
Err(RevlogError::InvalidRevision) => {} // Try other syntax
result => return result,
}
if input == "null" {
return Ok(NULL_REVISION);
}
// TODO: support for the rest of the language here.
Err(
HgError::unsupported(format!("cannot parse revset '{}'", input))
.into(),
)
}
/// Resolve the small subset of the language suitable for revlogs other than
/// the changelog, such as in `hg debugdata --manifest` CLI argument.
///
/// * A non-negative decimal integer for a revision number, or
/// * An hexadecimal string, for the unique node ID that starts with this
/// prefix
pub fn resolve_rev_number_or_hex_prefix(
input: &str,
revlog: &Revlog,
) -> Result<Revision, RevlogError> {
if let Ok(integer) = input.parse::<i32>() {
if integer >= 0 && revlog.has_rev(integer) {
return Ok(integer);
}
}
if let Ok(prefix) = NodePrefix::from_hex(input) {
if prefix.is_prefix_of(&Node::from_hex(WORKING_DIRECTORY_HEX).unwrap())
{
return Err(RevlogError::WDirUnsupported);
}
return revlog.get_node_rev(prefix);
}
Err(RevlogError::InvalidRevision)
}