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// status.rs
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//
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// Copyright 2020, Georges Racinet <georges.racinets@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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use crate::error::CommandError;
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use crate::ui::{Ui, UiError};
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use crate::utils::path_utils::relativize_paths;
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use clap::{Arg, SubCommand};
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use hg;
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use hg::config::Config;
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use hg::dirstate::TruncatedTimestamp;
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use hg::errors::HgError;
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use hg::manifest::Manifest;
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use hg::matchers::AlwaysMatcher;
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use hg::repo::Repo;
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use hg::utils::hg_path::{hg_path_to_os_string, HgPath};
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use hg::{HgPathCow, StatusOptions};
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use log::{info, warn};
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use std::borrow::Cow;
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pub const HELP_TEXT: &str = "
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Show changed files in the working directory
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This is a pure Rust version of `hg status`.
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Some options might be missing, check the list below.
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";
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pub fn args() -> clap::App<'static, 'static> {
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SubCommand::with_name("status")
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.alias("st")
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.about(HELP_TEXT)
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.arg(
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Arg::with_name("all")
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.help("show status of all files")
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.short("-A")
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.long("--all"),
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)
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.arg(
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Arg::with_name("modified")
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.help("show only modified files")
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.short("-m")
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.long("--modified"),
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)
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.arg(
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Arg::with_name("added")
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.help("show only added files")
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.short("-a")
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.long("--added"),
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)
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.arg(
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Arg::with_name("removed")
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.help("show only removed files")
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.short("-r")
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.long("--removed"),
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)
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.arg(
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Arg::with_name("clean")
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.help("show only clean files")
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.short("-c")
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.long("--clean"),
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)
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.arg(
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Arg::with_name("deleted")
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.help("show only deleted files")
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.short("-d")
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.long("--deleted"),
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)
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.arg(
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Arg::with_name("unknown")
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.help("show only unknown (not tracked) files")
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.short("-u")
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.long("--unknown"),
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)
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.arg(
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Arg::with_name("ignored")
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.help("show only ignored files")
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.short("-i")
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.long("--ignored"),
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)
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}
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/// Pure data type allowing the caller to specify file states to display
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#[derive(Copy, Clone, Debug)]
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pub struct DisplayStates {
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pub modified: bool,
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pub added: bool,
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pub removed: bool,
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pub clean: bool,
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pub deleted: bool,
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pub unknown: bool,
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pub ignored: bool,
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}
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pub const DEFAULT_DISPLAY_STATES: DisplayStates = DisplayStates {
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modified: true,
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added: true,
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removed: true,
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clean: false,
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deleted: true,
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unknown: true,
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ignored: false,
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};
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pub const ALL_DISPLAY_STATES: DisplayStates = DisplayStates {
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modified: true,
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added: true,
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removed: true,
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clean: true,
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deleted: true,
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unknown: true,
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ignored: true,
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};
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impl DisplayStates {
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pub fn is_empty(&self) -> bool {
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!(self.modified
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|| self.added
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|| self.removed
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|| self.clean
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|| self.deleted
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|| self.unknown
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|| self.ignored)
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}
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}
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pub fn run(invocation: &crate::CliInvocation) -> Result<(), CommandError> {
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let status_enabled_default = false;
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let status_enabled = invocation.config.get_option(b"rhg", b"status")?;
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if !status_enabled.unwrap_or(status_enabled_default) {
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return Err(CommandError::unsupported(
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"status is experimental in rhg (enable it with 'rhg.status = true' \
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or enable fallback with 'rhg.on-unsupported = fallback')"
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));
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}
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// TODO: lift these limitations
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if invocation.config.get_bool(b"ui", b"tweakdefaults")? {
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return Err(CommandError::unsupported(
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"ui.tweakdefaults is not yet supported with rhg status",
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));
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}
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if invocation.config.get_bool(b"ui", b"statuscopies")? {
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return Err(CommandError::unsupported(
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"ui.statuscopies is not yet supported with rhg status",
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));
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}
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if invocation
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.config
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.get(b"commands", b"status.terse")
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.is_some()
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{
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return Err(CommandError::unsupported(
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"status.terse is not yet supported with rhg status",
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));
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}
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let ui = invocation.ui;
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let config = invocation.config;
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let args = invocation.subcommand_args;
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let display_states = if args.is_present("all") {
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// TODO when implementing `--quiet`: it excludes clean files
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// from `--all`
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ALL_DISPLAY_STATES
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} else {
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let requested = DisplayStates {
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modified: args.is_present("modified"),
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added: args.is_present("added"),
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removed: args.is_present("removed"),
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clean: args.is_present("clean"),
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deleted: args.is_present("deleted"),
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unknown: args.is_present("unknown"),
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ignored: args.is_present("ignored"),
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};
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if requested.is_empty() {
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DEFAULT_DISPLAY_STATES
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} else {
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requested
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}
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};
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let repo = invocation.repo?;
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let mut dmap = repo.dirstate_map_mut()?;
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let options = StatusOptions {
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// TODO should be provided by the dirstate parsing and
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// hence be stored on dmap. Using a value that assumes we aren't
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// below the time resolution granularity of the FS and the
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// dirstate.
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last_normal_time: TruncatedTimestamp::new_truncate(0, 0),
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// we're currently supporting file systems with exec flags only
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// anyway
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check_exec: true,
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list_clean: display_states.clean,
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list_unknown: display_states.unknown,
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list_ignored: display_states.ignored,
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collect_traversed_dirs: false,
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};
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let ignore_file = repo.working_directory_vfs().join(".hgignore"); // TODO hardcoded
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let (mut ds_status, pattern_warnings) = dmap.status(
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&AlwaysMatcher,
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repo.working_directory_path().to_owned(),
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vec![ignore_file],
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options,
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)?;
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if !pattern_warnings.is_empty() {
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warn!("Pattern warnings: {:?}", &pattern_warnings);
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}
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if !ds_status.bad.is_empty() {
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warn!("Bad matches {:?}", &(ds_status.bad))
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}
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if !ds_status.unsure.is_empty() {
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info!(
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"Files to be rechecked by retrieval from filelog: {:?}",
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&ds_status.unsure
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);
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}
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if !ds_status.unsure.is_empty()
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&& (display_states.modified || display_states.clean)
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{
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let p1 = repo.dirstate_parents()?.p1;
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let manifest = repo.manifest_for_node(p1).map_err(|e| {
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CommandError::from((e, &*format!("{:x}", p1.short())))
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})?;
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for to_check in ds_status.unsure {
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if unsure_is_modified(repo, &manifest, &to_check)? {
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if display_states.modified {
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ds_status.modified.push(to_check);
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}
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} else {
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if display_states.clean {
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ds_status.clean.push(to_check);
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}
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}
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}
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}
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if display_states.modified {
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display_status_paths(ui, repo, config, &mut ds_status.modified, b"M")?;
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}
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if display_states.added {
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display_status_paths(ui, repo, config, &mut ds_status.added, b"A")?;
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}
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if display_states.removed {
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display_status_paths(ui, repo, config, &mut ds_status.removed, b"R")?;
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}
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if display_states.deleted {
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display_status_paths(ui, repo, config, &mut ds_status.deleted, b"!")?;
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}
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if display_states.unknown {
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display_status_paths(ui, repo, config, &mut ds_status.unknown, b"?")?;
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}
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if display_states.ignored {
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display_status_paths(ui, repo, config, &mut ds_status.ignored, b"I")?;
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}
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if display_states.clean {
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display_status_paths(ui, repo, config, &mut ds_status.clean, b"C")?;
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}
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Ok(())
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}
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// Probably more elegant to use a Deref or Borrow trait rather than
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// harcode HgPathBuf, but probably not really useful at this point
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fn display_status_paths(
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ui: &Ui,
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repo: &Repo,
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config: &Config,
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paths: &mut [HgPathCow],
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status_prefix: &[u8],
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) -> Result<(), CommandError> {
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paths.sort_unstable();
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let mut relative: bool = config.get_bool(b"ui", b"relative-paths")?;
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relative = config
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.get_option(b"commands", b"status.relative")?
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.unwrap_or(relative);
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if relative && !ui.plain() {
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relativize_paths(
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repo,
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paths.iter().map(Ok),
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|path: Cow<[u8]>| -> Result<(), UiError> {
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ui.write_stdout(
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&[status_prefix, b" ", path.as_ref(), b"\n"].concat(),
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)
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},
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)?;
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} else {
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for path in paths {
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// Same TODO as in commands::root
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let bytes: &[u8] = path.as_bytes();
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// TODO optim, probably lots of unneeded copies here, especially
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// if out stream is buffered
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ui.write_stdout(&[status_prefix, b" ", bytes, b"\n"].concat())?;
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}
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}
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Ok(())
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}
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/// Check if a file is modified by comparing actual repo store and file system.
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///
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/// This meant to be used for those that the dirstate cannot resolve, due
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/// to time resolution limits.
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///
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/// TODO: detect permission bits and similar metadata modifications
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fn unsure_is_modified(
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repo: &Repo,
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manifest: &Manifest,
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hg_path: &HgPath,
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) -> Result<bool, HgError> {
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let entry = manifest
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.find_file(hg_path)?
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.expect("ambgious file not in p1");
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let filelog = repo.filelog(hg_path)?;
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let filelog_entry =
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filelog.data_for_node(entry.node_id()?).map_err(|_| {
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HgError::corrupted("filelog missing node from manifest")
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})?;
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let contents_in_p1 = filelog_entry.data()?;
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let fs_path = hg_path_to_os_string(hg_path).expect("HgPath conversion");
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let fs_contents = repo.working_directory_vfs().read(fs_path)?;
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return Ok(contents_in_p1 != &*fs_contents);
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}
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