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annotate rust/rhg/src/commands/status.rs @ 47969:87e3f878e65f

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rust: Rename get_node methods to data_for_node, get_rev to data_for_rev These are respective methods of Changelog, Manifestlog, and Filelog; three Rust structs that that wrap a Revlog struct. This rename clarifies that node IDs or revision numbers are parameters, not return values. Also reword doc-comments in Manifestlog and Filelog to separate node IDs and revision numbers that are local to a given (non-changelog) revlog from those of a changeset. Differential Revision: https://phab.mercurial-scm.org/D11416
author Simon Sapin <simon.sapin@octobus.net>
date Tue, 14 Sep 2021 18:25:51 +0200
parents f9e6f2bb721d
children 3d0a9c6e614d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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::HgError;
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14 use hg::manifest::Manifest;
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15 use hg::matchers::AlwaysMatcher;
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16 use hg::repo::Repo;
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17 use hg::utils::hg_path::{hg_path_to_os_string, HgPath};
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18 use hg::{HgPathCow, StatusOptions};
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19 use log::{info, warn};
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20
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21 pub const HELP_TEXT: &str = "
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22 Show changed files in the working directory
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23
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24 This is a pure Rust version of `hg status`.
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25
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26 Some options might be missing, check the list below.
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27 ";
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28
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29 pub fn args() -> clap::App<'static, 'static> {
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30 SubCommand::with_name("status")
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31 .alias("st")
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32 .about(HELP_TEXT)
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33 .arg(
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34 Arg::with_name("all")
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35 .help("show status of all files")
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36 .short("-A")
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37 .long("--all"),
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38 )
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39 .arg(
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40 Arg::with_name("modified")
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41 .help("show only modified files")
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42 .short("-m")
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43 .long("--modified"),
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44 )
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45 .arg(
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46 Arg::with_name("added")
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47 .help("show only added files")
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48 .short("-a")
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49 .long("--added"),
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50 )
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51 .arg(
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52 Arg::with_name("removed")
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53 .help("show only removed files")
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54 .short("-r")
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55 .long("--removed"),
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56 )
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57 .arg(
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58 Arg::with_name("clean")
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59 .help("show only clean files")
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60 .short("-c")
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61 .long("--clean"),
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62 )
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63 .arg(
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64 Arg::with_name("deleted")
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65 .help("show only deleted files")
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66 .short("-d")
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67 .long("--deleted"),
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68 )
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69 .arg(
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70 Arg::with_name("unknown")
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71 .help("show only unknown (not tracked) files")
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72 .short("-u")
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73 .long("--unknown"),
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74 )
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75 .arg(
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76 Arg::with_name("ignored")
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77 .help("show only ignored files")
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78 .short("-i")
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79 .long("--ignored"),
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80 )
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81 }
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82
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83 /// Pure data type allowing the caller to specify file states to display
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84 #[derive(Copy, Clone, Debug)]
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85 pub struct DisplayStates {
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86 pub modified: bool,
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87 pub added: bool,
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88 pub removed: bool,
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89 pub clean: bool,
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90 pub deleted: bool,
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91 pub unknown: bool,
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92 pub ignored: bool,
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93 }
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94
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95 pub const DEFAULT_DISPLAY_STATES: DisplayStates = DisplayStates {
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96 modified: true,
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97 added: true,
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98 removed: true,
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99 clean: false,
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100 deleted: true,
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101 unknown: true,
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102 ignored: false,
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103 };
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104
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105 pub const ALL_DISPLAY_STATES: DisplayStates = DisplayStates {
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106 modified: true,
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107 added: true,
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108 removed: true,
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109 clean: true,
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110 deleted: true,
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111 unknown: true,
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112 ignored: true,
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113 };
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114
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115 impl DisplayStates {
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116 pub fn is_empty(&self) -> bool {
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117 !(self.modified
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118 || self.added
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119 || self.removed
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120 || self.clean
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121 || self.deleted
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122 || self.unknown
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123 || self.ignored)
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124 }
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125 }
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126
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127 pub fn run(invocation: &crate::CliInvocation) -> Result<(), CommandError> {
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128 let status_enabled_default = false;
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129 let status_enabled = invocation.config.get_option(b"rhg", b"status")?;
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130 if !status_enabled.unwrap_or(status_enabled_default) {
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131 return Err(CommandError::unsupported(
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132 "status is experimental in rhg (enable it with 'rhg.status = true' \
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133 or enable fallback with 'rhg.on-unsupported = fallback')"
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134 ));
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135 }
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136
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137 let ui = invocation.ui;
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138 let args = invocation.subcommand_args;
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139 let display_states = if args.is_present("all") {
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140 // TODO when implementing `--quiet`: it excludes clean files
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141 // from `--all`
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142 ALL_DISPLAY_STATES
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143 } else {
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144 let requested = DisplayStates {
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145 modified: args.is_present("modified"),
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146 added: args.is_present("added"),
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147 removed: args.is_present("removed"),
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148 clean: args.is_present("clean"),
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149 deleted: args.is_present("deleted"),
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150 unknown: args.is_present("unknown"),
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151 ignored: args.is_present("ignored"),
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152 };
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153 if requested.is_empty() {
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154 DEFAULT_DISPLAY_STATES
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155 } else {
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156 requested
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157 }
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158 };
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159
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160 let repo = invocation.repo?;
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161 let mut dmap = repo.dirstate_map_mut()?;
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162
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163 let options = StatusOptions {
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164 // TODO should be provided by the dirstate parsing and
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165 // hence be stored on dmap. Using a value that assumes we aren't
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166 // below the time resolution granularity of the FS and the
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167 // dirstate.
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168 last_normal_time: 0,
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169 // we're currently supporting file systems with exec flags only
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170 // anyway
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171 check_exec: true,
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172 list_clean: display_states.clean,
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173 list_unknown: display_states.unknown,
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174 list_ignored: display_states.ignored,
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175 collect_traversed_dirs: false,
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176 };
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177 let ignore_file = repo.working_directory_vfs().join(".hgignore"); // TODO hardcoded
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178 let (mut ds_status, pattern_warnings) = dmap.status(
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179 &AlwaysMatcher,
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180 repo.working_directory_path().to_owned(),
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181 vec![ignore_file],
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182 options,
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183 )?;
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184 if !pattern_warnings.is_empty() {
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185 warn!("Pattern warnings: {:?}", &pattern_warnings);
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186 }
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187
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188 if !ds_status.bad.is_empty() {
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189 warn!("Bad matches {:?}", &(ds_status.bad))
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190 }
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191 if !ds_status.unsure.is_empty() {
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192 info!(
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193 "Files to be rechecked by retrieval from filelog: {:?}",
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194 &ds_status.unsure
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195 );
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196 }
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197 if !ds_status.unsure.is_empty()
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198 && (display_states.modified || display_states.clean)
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199 {
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200 let p1 = repo.dirstate_parents()?.p1;
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diff changeset
201 let manifest = repo.manifest_for_node(p1).map_err(|e| {
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diff changeset
202 CommandError::from((e, &*format!("{:x}", p1.short())))
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203 })?;
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diff changeset
204 for to_check in ds_status.unsure {
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diff changeset
205 if cat_file_is_modified(repo, &manifest, &to_check)? {
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206 if display_states.modified {
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diff changeset
207 ds_status.modified.push(to_check);
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208 }
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209 } else {
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210 if display_states.clean {
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211 ds_status.clean.push(to_check);
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212 }
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213 }
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214 }
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215 }
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diff changeset
216 if display_states.modified {
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217 display_status_paths(ui, &mut ds_status.modified, b"M")?;
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218 }
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diff changeset
219 if display_states.added {
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220 display_status_paths(ui, &mut ds_status.added, b"A")?;
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221 }
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222 if display_states.removed {
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223 display_status_paths(ui, &mut ds_status.removed, b"R")?;
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224 }
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diff changeset
225 if display_states.deleted {
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226 display_status_paths(ui, &mut ds_status.deleted, b"!")?;
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227 }
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diff changeset
228 if display_states.unknown {
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229 display_status_paths(ui, &mut ds_status.unknown, b"?")?;
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230 }
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diff changeset
231 if display_states.ignored {
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diff changeset
232 display_status_paths(ui, &mut ds_status.ignored, b"I")?;
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233 }
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234 if display_states.clean {
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235 display_status_paths(ui, &mut ds_status.clean, b"C")?;
46822
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236 }
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diff changeset
237 Ok(())
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238 }
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239
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diff changeset
240 // Probably more elegant to use a Deref or Borrow trait rather than
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diff changeset
241 // harcode HgPathBuf, but probably not really useful at this point
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diff changeset
242 fn display_status_paths(
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diff changeset
243 ui: &Ui,
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244 paths: &mut [HgPathCow],
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245 status_prefix: &[u8],
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diff changeset
246 ) -> Result<(), CommandError> {
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247 paths.sort_unstable();
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diff changeset
248 for path in paths {
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249 // Same TODO as in commands::root
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diff changeset
250 let bytes: &[u8] = path.as_bytes();
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251 // TODO optim, probably lots of unneeded copies here, especially
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252 // if out stream is buffered
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253 ui.write_stdout(&[status_prefix, b" ", bytes, b"\n"].concat())?;
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254 }
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255 Ok(())
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256 }
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257
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258 /// Check if a file is modified by comparing actual repo store and file system.
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259 ///
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260 /// This meant to be used for those that the dirstate cannot resolve, due
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261 /// to time resolution limits.
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262 ///
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263 /// TODO: detect permission bits and similar metadata modifications
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264 fn cat_file_is_modified(
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265 repo: &Repo,
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266 manifest: &Manifest,
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267 hg_path: &HgPath,
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268 ) -> Result<bool, HgError> {
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269 let file_node = manifest
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270 .find_file(hg_path)?
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271 .expect("ambgious file not in p1");
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272 let filelog = repo.filelog(hg_path)?;
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273 let filelog_entry = filelog.data_for_node(file_node).map_err(|_| {
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274 HgError::corrupted("filelog missing node from manifest")
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275 })?;
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276 let contents_in_p1 = filelog_entry.data()?;
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277
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278 let fs_path = hg_path_to_os_string(hg_path).expect("HgPath conversion");
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279 let fs_contents = repo.working_directory_vfs().read(fs_path)?;
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280 return Ok(contents_in_p1 == &*fs_contents);
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281 }