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annotate rust/rhg/src/commands/status.rs @ 47956:81aedf1fc897

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rust: Add Repo::dirstate_map and use it in `rhg status` This moves low-level dirstate wrangling out of the status command and into a more reusable location. The open dirstate map is lazily initialized and kept on the Repo object, for reuse by sub-sequent calls. Differential Revision: https://phab.mercurial-scm.org/D11398
author Simon Sapin <simon.sapin@octobus.net>
date Thu, 09 Sep 2021 21:04:55 +0200
parents 78f7f0d490ee
children 796206e74b10
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1 // status.rs
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2 //
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3 // Copyright 2020, Georges Racinet <georges.racinets@octobus.net>
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4 //
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5 // This software may be used and distributed according to the terms of the
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6 // GNU General Public License version 2 or any later version.
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7
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8 use crate::error::CommandError;
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9 use crate::ui::Ui;
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10 use clap::{Arg, SubCommand};
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11 use hg;
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12 use hg::dirstate_tree::dispatch::DirstateMapMethods;
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13 use hg::errors::IoResultExt;
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14 use hg::matchers::AlwaysMatcher;
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15 use hg::operations::cat;
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16 use hg::repo::Repo;
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17 use hg::revlog::node::Node;
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18 use hg::utils::hg_path::{hg_path_to_os_string, HgPath};
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19 use hg::StatusError;
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20 use hg::{HgPathCow, StatusOptions};
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21 use log::{info, warn};
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22 use std::convert::TryInto;
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23 use std::fs;
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24 use std::io::BufReader;
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25 use std::io::Read;
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26
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27 pub const HELP_TEXT: &str = "
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28 Show changed files in the working directory
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29
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30 This is a pure Rust version of `hg status`.
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31
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32 Some options might be missing, check the list below.
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33 ";
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34
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35 pub fn args() -> clap::App<'static, 'static> {
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36 SubCommand::with_name("status")
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37 .alias("st")
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38 .about(HELP_TEXT)
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39 .arg(
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40 Arg::with_name("all")
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41 .help("show status of all files")
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42 .short("-A")
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43 .long("--all"),
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44 )
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45 .arg(
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46 Arg::with_name("modified")
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47 .help("show only modified files")
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48 .short("-m")
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49 .long("--modified"),
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50 )
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51 .arg(
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52 Arg::with_name("added")
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53 .help("show only added files")
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54 .short("-a")
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55 .long("--added"),
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56 )
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57 .arg(
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58 Arg::with_name("removed")
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59 .help("show only removed files")
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60 .short("-r")
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61 .long("--removed"),
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62 )
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63 .arg(
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64 Arg::with_name("clean")
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65 .help("show only clean files")
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66 .short("-c")
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67 .long("--clean"),
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68 )
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69 .arg(
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70 Arg::with_name("deleted")
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71 .help("show only deleted files")
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72 .short("-d")
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73 .long("--deleted"),
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74 )
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75 .arg(
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76 Arg::with_name("unknown")
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77 .help("show only unknown (not tracked) files")
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78 .short("-u")
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79 .long("--unknown"),
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80 )
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81 .arg(
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82 Arg::with_name("ignored")
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83 .help("show only ignored files")
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84 .short("-i")
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85 .long("--ignored"),
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86 )
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87 }
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88
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89 /// Pure data type allowing the caller to specify file states to display
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90 #[derive(Copy, Clone, Debug)]
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91 pub struct DisplayStates {
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92 pub modified: bool,
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93 pub added: bool,
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94 pub removed: bool,
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95 pub clean: bool,
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96 pub deleted: bool,
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97 pub unknown: bool,
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98 pub ignored: bool,
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99 }
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100
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101 pub const DEFAULT_DISPLAY_STATES: DisplayStates = DisplayStates {
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102 modified: true,
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103 added: true,
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104 removed: true,
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105 clean: false,
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106 deleted: true,
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107 unknown: true,
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108 ignored: false,
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109 };
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110
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111 pub const ALL_DISPLAY_STATES: DisplayStates = DisplayStates {
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112 modified: true,
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113 added: true,
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114 removed: true,
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115 clean: true,
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116 deleted: true,
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117 unknown: true,
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118 ignored: true,
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119 };
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120
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121 impl DisplayStates {
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122 pub fn is_empty(&self) -> bool {
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123 !(self.modified
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124 || self.added
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125 || self.removed
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126 || self.clean
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127 || self.deleted
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128 || self.unknown
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129 || self.ignored)
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130 }
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131 }
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132
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133 pub fn run(invocation: &crate::CliInvocation) -> Result<(), CommandError> {
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134 let status_enabled_default = false;
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135 let status_enabled = invocation.config.get_option(b"rhg", b"status")?;
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136 if !status_enabled.unwrap_or(status_enabled_default) {
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137 return Err(CommandError::unsupported(
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138 "status is experimental in rhg (enable it with 'rhg.status = true' \
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139 or enable fallback with 'rhg.on-unsupported = fallback')"
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140 ));
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141 }
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142
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143 let ui = invocation.ui;
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144 let args = invocation.subcommand_args;
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145 let display_states = if args.is_present("all") {
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146 // TODO when implementing `--quiet`: it excludes clean files
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147 // from `--all`
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148 ALL_DISPLAY_STATES
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149 } else {
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150 let requested = DisplayStates {
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151 modified: args.is_present("modified"),
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152 added: args.is_present("added"),
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153 removed: args.is_present("removed"),
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154 clean: args.is_present("clean"),
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155 deleted: args.is_present("deleted"),
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156 unknown: args.is_present("unknown"),
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157 ignored: args.is_present("ignored"),
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158 };
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159 if requested.is_empty() {
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160 DEFAULT_DISPLAY_STATES
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161 } else {
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162 requested
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163 }
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164 };
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165
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166 let repo = invocation.repo?;
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167 let mut dmap = repo.dirstate_map_mut()?;
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168
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169 let options = StatusOptions {
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170 // TODO should be provided by the dirstate parsing and
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171 // hence be stored on dmap. Using a value that assumes we aren't
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172 // below the time resolution granularity of the FS and the
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173 // dirstate.
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174 last_normal_time: 0,
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175 // we're currently supporting file systems with exec flags only
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176 // anyway
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177 check_exec: true,
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178 list_clean: display_states.clean,
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179 list_unknown: display_states.unknown,
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180 list_ignored: display_states.ignored,
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181 collect_traversed_dirs: false,
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182 };
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183 let ignore_file = repo.working_directory_vfs().join(".hgignore"); // TODO hardcoded
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184 let (mut ds_status, pattern_warnings) = dmap.status(
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185 &AlwaysMatcher,
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186 repo.working_directory_path().to_owned(),
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187 vec![ignore_file],
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188 options,
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189 )?;
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190 if !pattern_warnings.is_empty() {
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191 warn!("Pattern warnings: {:?}", &pattern_warnings);
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192 }
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193
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diff changeset
194 if !ds_status.bad.is_empty() {
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195 warn!("Bad matches {:?}", &(ds_status.bad))
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196 }
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197 if !ds_status.unsure.is_empty() {
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diff changeset
198 info!(
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199 "Files to be rechecked by retrieval from filelog: {:?}",
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200 &ds_status.unsure
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diff changeset
201 );
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202 }
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diff changeset
203 if !ds_status.unsure.is_empty()
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diff changeset
204 && (display_states.modified || display_states.clean)
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diff changeset
205 {
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81aedf1fc897 rust: Add Repo::dirstate_map and use it in `rhg status`
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diff changeset
206 let p1: Node = repo.dirstate_parents()?.p1.into();
46822
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diff changeset
207 let p1_hex = format!("{:x}", p1);
47110
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diff changeset
208 for to_check in ds_status.unsure {
46822
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diff changeset
209 if cat_file_is_modified(repo, &to_check, &p1_hex)? {
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diff changeset
210 if display_states.modified {
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diff changeset
211 ds_status.modified.push(to_check);
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diff changeset
212 }
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diff changeset
213 } else {
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diff changeset
214 if display_states.clean {
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diff changeset
215 ds_status.clean.push(to_check);
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216 }
46822
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217 }
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218 }
47321
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diff changeset
219 }
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diff changeset
220 if display_states.modified {
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diff changeset
221 display_status_paths(ui, &mut ds_status.modified, b"M")?;
46822
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diff changeset
222 }
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parents:
diff changeset
223 if display_states.added {
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diff changeset
224 display_status_paths(ui, &mut ds_status.added, b"A")?;
46822
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225 }
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parents:
diff changeset
226 if display_states.removed {
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diff changeset
227 display_status_paths(ui, &mut ds_status.removed, b"R")?;
46822
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228 }
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diff changeset
229 if display_states.deleted {
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diff changeset
230 display_status_paths(ui, &mut ds_status.deleted, b"!")?;
46822
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231 }
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parents:
diff changeset
232 if display_states.unknown {
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diff changeset
233 display_status_paths(ui, &mut ds_status.unknown, b"?")?;
46822
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diff changeset
234 }
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parents:
diff changeset
235 if display_states.ignored {
47321
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diff changeset
236 display_status_paths(ui, &mut ds_status.ignored, b"I")?;
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diff changeset
237 }
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Simon Sapin <simon.sapin@octobus.net>
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diff changeset
238 if display_states.clean {
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diff changeset
239 display_status_paths(ui, &mut ds_status.clean, b"C")?;
46822
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diff changeset
240 }
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Georges Racinet <georges.racinet@octobus.net>
parents:
diff changeset
241 Ok(())
c71e8d9e7f2a rhg: Initial support for the 'status' command
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parents:
diff changeset
242 }
c71e8d9e7f2a rhg: Initial support for the 'status' command
Georges Racinet <georges.racinet@octobus.net>
parents:
diff changeset
243
c71e8d9e7f2a rhg: Initial support for the 'status' command
Georges Racinet <georges.racinet@octobus.net>
parents:
diff changeset
244 // Probably more elegant to use a Deref or Borrow trait rather than
c71e8d9e7f2a rhg: Initial support for the 'status' command
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parents:
diff changeset
245 // harcode HgPathBuf, but probably not really useful at this point
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parents:
diff changeset
246 fn display_status_paths(
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parents:
diff changeset
247 ui: &Ui,
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diff changeset
248 paths: &mut [HgPathCow],
46822
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parents:
diff changeset
249 status_prefix: &[u8],
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parents:
diff changeset
250 ) -> Result<(), CommandError> {
47321
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diff changeset
251 paths.sort_unstable();
46822
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252 for path in paths {
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253 // Same TODO as in commands::root
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254 let bytes: &[u8] = path.as_bytes();
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255 // TODO optim, probably lots of unneeded copies here, especially
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256 // if out stream is buffered
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257 ui.write_stdout(&[status_prefix, b" ", bytes, b"\n"].concat())?;
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258 }
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259 Ok(())
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260 }
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261
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262 /// Check if a file is modified by comparing actual repo store and file system.
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263 ///
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264 /// This meant to be used for those that the dirstate cannot resolve, due
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265 /// to time resolution limits.
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266 ///
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267 /// TODO: detect permission bits and similar metadata modifications
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268 fn cat_file_is_modified(
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269 repo: &Repo,
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270 hg_path: &HgPath,
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271 rev: &str,
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272 ) -> Result<bool, CommandError> {
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273 // TODO CatRev expects &[HgPathBuf], something like
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274 // &[impl Deref<HgPath>] would be nicer and should avoid the copy
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275 let path_bufs = [hg_path.into()];
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276 // TODO IIUC CatRev returns a simple Vec<u8> for all files
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277 // being able to tell them apart as (path, bytes) would be nicer
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278 // and OPTIM would allow manifest resolution just once.
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279 let output = cat(repo, rev, &path_bufs).map_err(|e| (e, rev))?;
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280
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281 let fs_path = repo
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282 .working_directory_vfs()
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283 .join(hg_path_to_os_string(hg_path).expect("HgPath conversion"));
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284 let hg_data_len: u64 = match output.concatenated.len().try_into() {
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285 Ok(v) => v,
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286 Err(_) => {
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287 // conversion of data length to u64 failed,
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288 // good luck for any file to have this content
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289 return Ok(true);
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290 }
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291 };
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292 let fobj = fs::File::open(&fs_path).when_reading_file(&fs_path)?;
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293 if fobj.metadata().map_err(|e| StatusError::from(e))?.len() != hg_data_len
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294 {
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295 return Ok(true);
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296 }
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297 for (fs_byte, hg_byte) in
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298 BufReader::new(fobj).bytes().zip(output.concatenated)
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299 {
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300 if fs_byte.map_err(|e| StatusError::from(e))? != hg_byte {
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301 return Ok(true);
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302 }
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303 }
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304 Ok(false)
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305 }