mirror of
https://github.com/facebook/sapling.git
synced 2024-10-11 17:27:53 +03:00
542d1f93d3
Summary: This commit manually synchronizes the internal move of fbcode/scm/mononoke under fbcode/eden/mononoke which couldn't be performed by ShipIt automatically. Reviewed By: StanislavGlebik Differential Revision: D19722832 fbshipit-source-id: 52fbc8bc42a8940b39872dfb8b00ce9c0f6b0800
72 lines
2.1 KiB
Rust
72 lines
2.1 KiB
Rust
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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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.
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*/
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use anyhow::{bail, Result};
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use clap::App;
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use mercurial_revlog::revlog::{RevIdx, Revlog};
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use std::str::FromStr;
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fn run() -> Result<()> {
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// Define command line args and parse command line
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let matches = App::new("idxdump")
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.version("0.0.0")
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.about("dump index entries")
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.args_from_usage(concat!(
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"<IDXFILE> 'index file'\n",
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"[<REV>] 'revision index'"
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))
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.get_matches();
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// get path to index file
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let idxpath = matches.value_of("IDXFILE").unwrap();
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// Get optional index of entry within index file to start dumping from
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let revidx: Option<RevIdx> = match matches.value_of("REV").map(FromStr::from_str) {
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Some(Ok(v)) => Some(v),
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Some(Err(err)) => bail!("idx malformed: {:?}", err),
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None => None,
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};
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// Construct a `Revlog` from the index file
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let revlog = match Revlog::from_idx_no_data(idxpath) {
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Ok(revlog) => revlog,
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Err(err) => bail!("failed to load idx {}: {:?}", idxpath, err),
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};
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// Print the header, using its `Debug` implementation
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println!("Header: {:?}", revlog.get_header());
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// Construct an iterator over the revlog index
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let iter = &mut revlog.into_iter();
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// If we're not starting at the first version, seek to the starting point
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if let Some(revidx) = revidx {
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iter.seek(revidx)
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}
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// for each entry, get a parsed index entry, and the sequence number in the iteration
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// (`enumerate()` takes an iterator returning T and turns it into an iterator returning
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// `(usize, T)` tuples)
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for (idx, entry) in iter.enumerate() {
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println!("{:?}: {:?}", revidx.unwrap_or(RevIdx::zero()) + idx, entry)
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}
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Ok(())
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}
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fn main() {
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if let Err(ref e) = run() {
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println!("Failed: {}", e);
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for e in e.chain() {
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println!("caused by: {}", e);
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}
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std::process::exit(1);
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}
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}
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