Mercurial > hg
annotate rust/rhg/src/commands/status.rs @ 50463:f57f5ab0e220
branching: merge stable into default
author | Raphaël Gomès <rgomes@octobus.net> |
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date | Tue, 09 May 2023 11:35:50 +0200 |
parents | 98fc949bec14 51041a1a4c59 |
children | f8412da86d05 |
rev | line source |
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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::{ |
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10 format_pattern_file_warning, print_narrow_sparse_warnings, Ui, |
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11 }; |
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12 use crate::utils::path_utils::RelativizePaths; |
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13 use clap::Arg; |
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14 use format_bytes::format_bytes; |
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15 use hg::config::Config; |
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16 use hg::dirstate::has_exec_bit; |
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17 use hg::dirstate::status::StatusPath; |
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18 use hg::dirstate::TruncatedTimestamp; |
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19 use hg::errors::{HgError, IoResultExt}; |
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20 use hg::lock::LockError; |
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21 use hg::manifest::Manifest; |
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22 use hg::matchers::{AlwaysMatcher, IntersectionMatcher}; |
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23 use hg::repo::Repo; |
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24 use hg::utils::debug::debug_wait_for_file; |
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25 use hg::utils::files::get_bytes_from_os_string; |
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26 use hg::utils::files::get_path_from_bytes; |
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27 use hg::utils::hg_path::{hg_path_to_path_buf, HgPath}; |
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28 use hg::DirstateStatus; |
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29 use hg::PatternFileWarning; |
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30 use hg::StatusError; |
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31 use hg::StatusOptions; |
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32 use hg::{self, narrow, sparse}; |
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33 use log::info; |
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34 use rayon::prelude::*; |
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35 use std::io; |
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36 use std::path::PathBuf; |
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37 |
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38 pub const HELP_TEXT: &str = " |
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39 Show changed files in the working directory |
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40 |
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41 This is a pure Rust version of `hg status`. |
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42 |
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43 Some options might be missing, check the list below. |
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44 "; |
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45 |
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46 pub fn args() -> clap::Command { |
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47 clap::command!("status") |
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48 .alias("st") |
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49 .about(HELP_TEXT) |
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50 .arg( |
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51 Arg::new("all") |
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52 .help("show status of all files") |
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53 .short('A') |
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54 .action(clap::ArgAction::SetTrue) |
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55 .long("all"), |
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56 ) |
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57 .arg( |
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58 Arg::new("modified") |
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59 .help("show only modified files") |
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60 .short('m') |
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61 .action(clap::ArgAction::SetTrue) |
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62 .long("modified"), |
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63 ) |
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64 .arg( |
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65 Arg::new("added") |
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66 .help("show only added files") |
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67 .short('a') |
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68 .action(clap::ArgAction::SetTrue) |
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69 .long("added"), |
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70 ) |
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71 .arg( |
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72 Arg::new("removed") |
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73 .help("show only removed files") |
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74 .short('r') |
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75 .action(clap::ArgAction::SetTrue) |
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76 .long("removed"), |
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77 ) |
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78 .arg( |
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79 Arg::new("clean") |
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80 .help("show only clean files") |
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81 .short('c') |
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82 .action(clap::ArgAction::SetTrue) |
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83 .long("clean"), |
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84 ) |
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85 .arg( |
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86 Arg::new("deleted") |
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87 .help("show only deleted files") |
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88 .short('d') |
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89 .action(clap::ArgAction::SetTrue) |
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90 .long("deleted"), |
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91 ) |
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92 .arg( |
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93 Arg::new("unknown") |
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94 .help("show only unknown (not tracked) files") |
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95 .short('u') |
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96 .action(clap::ArgAction::SetTrue) |
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97 .long("unknown"), |
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98 ) |
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99 .arg( |
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100 Arg::new("ignored") |
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101 .help("show only ignored files") |
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102 .short('i') |
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103 .action(clap::ArgAction::SetTrue) |
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104 .long("ignored"), |
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105 ) |
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106 .arg( |
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107 Arg::new("copies") |
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108 .help("show source of copied files (DEFAULT: ui.statuscopies)") |
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109 .short('C') |
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110 .action(clap::ArgAction::SetTrue) |
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111 .long("copies"), |
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112 ) |
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113 .arg( |
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114 Arg::new("print0") |
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115 .help("end filenames with NUL, for use with xargs") |
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116 .short('0') |
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117 .action(clap::ArgAction::SetTrue) |
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118 .long("print0"), |
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119 ) |
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120 .arg( |
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121 Arg::new("no-status") |
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122 .help("hide status prefix") |
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123 .short('n') |
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124 .action(clap::ArgAction::SetTrue) |
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125 .long("no-status"), |
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126 ) |
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127 .arg( |
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128 Arg::new("verbose") |
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129 .help("enable additional output") |
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130 .short('v') |
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131 .action(clap::ArgAction::SetTrue) |
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132 .long("verbose"), |
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133 ) |
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134 } |
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135 |
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136 /// Pure data type allowing the caller to specify file states to display |
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137 #[derive(Copy, Clone, Debug)] |
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138 pub struct DisplayStates { |
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139 pub modified: bool, |
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140 pub added: bool, |
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141 pub removed: bool, |
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142 pub clean: bool, |
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143 pub deleted: bool, |
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144 pub unknown: bool, |
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145 pub ignored: bool, |
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146 } |
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147 |
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148 pub const DEFAULT_DISPLAY_STATES: DisplayStates = DisplayStates { |
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149 modified: true, |
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150 added: true, |
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151 removed: true, |
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152 clean: false, |
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153 deleted: true, |
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154 unknown: true, |
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155 ignored: false, |
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156 }; |
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157 |
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158 pub const ALL_DISPLAY_STATES: DisplayStates = DisplayStates { |
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159 modified: true, |
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160 added: true, |
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161 removed: true, |
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162 clean: true, |
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163 deleted: true, |
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164 unknown: true, |
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165 ignored: true, |
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166 }; |
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167 |
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168 impl DisplayStates { |
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169 pub fn is_empty(&self) -> bool { |
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170 !(self.modified |
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171 || self.added |
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172 || self.removed |
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173 || self.clean |
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174 || self.deleted |
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175 || self.unknown |
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176 || self.ignored) |
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177 } |
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178 } |
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179 |
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180 fn has_unfinished_merge(repo: &Repo) -> Result<bool, CommandError> { |
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181 Ok(repo.dirstate_parents()?.is_merge()) |
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182 } |
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183 |
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184 fn has_unfinished_state(repo: &Repo) -> Result<bool, CommandError> { |
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185 // These are all the known values for the [fname] argument of |
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186 // [addunfinished] function in [state.py] |
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187 let known_state_files: &[&str] = &[ |
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188 "bisect.state", |
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189 "graftstate", |
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190 "histedit-state", |
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191 "rebasestate", |
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192 "shelvedstate", |
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193 "transplant/journal", |
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194 "updatestate", |
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195 ]; |
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196 if has_unfinished_merge(repo)? { |
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197 return Ok(true); |
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198 }; |
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199 for f in known_state_files { |
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200 if repo.hg_vfs().join(f).exists() { |
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201 return Ok(true); |
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202 } |
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203 } |
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204 Ok(false) |
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205 } |
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206 |
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207 pub fn run(invocation: &crate::CliInvocation) -> Result<(), CommandError> { |
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208 // TODO: lift these limitations |
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209 if invocation |
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210 .config |
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211 .get(b"commands", b"status.terse") |
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212 .is_some() |
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213 { |
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214 return Err(CommandError::unsupported( |
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215 "status.terse is not yet supported with rhg status", |
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216 )); |
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217 } |
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218 |
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219 let ui = invocation.ui; |
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220 let config = invocation.config; |
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221 let args = invocation.subcommand_args; |
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222 |
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223 let print0 = args.get_flag("print0"); |
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224 let verbose = args.get_flag("verbose") |
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225 || config.get_bool(b"ui", b"verbose")? |
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226 || config.get_bool(b"commands", b"status.verbose")?; |
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227 let verbose = verbose && !print0; |
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228 |
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229 let all = args.get_flag("all"); |
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230 let display_states = if all { |
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231 // TODO when implementing `--quiet`: it excludes clean files |
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232 // from `--all` |
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233 ALL_DISPLAY_STATES |
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234 } else { |
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235 let requested = DisplayStates { |
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236 modified: args.get_flag("modified"), |
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237 added: args.get_flag("added"), |
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238 removed: args.get_flag("removed"), |
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239 clean: args.get_flag("clean"), |
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240 deleted: args.get_flag("deleted"), |
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241 unknown: args.get_flag("unknown"), |
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242 ignored: args.get_flag("ignored"), |
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243 }; |
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244 if requested.is_empty() { |
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245 DEFAULT_DISPLAY_STATES |
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246 } else { |
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247 requested |
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248 } |
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249 }; |
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250 let no_status = args.get_flag("no-status"); |
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251 let list_copies = all |
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252 || args.get_flag("copies") |
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253 || config.get_bool(b"ui", b"statuscopies")?; |
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254 |
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255 let repo = invocation.repo?; |
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256 |
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257 if verbose && has_unfinished_state(repo)? { |
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258 return Err(CommandError::unsupported( |
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259 "verbose status output is not supported by rhg (and is needed because we're in an unfinished operation)", |
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260 )); |
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261 } |
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262 |
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263 let mut dmap = repo.dirstate_map_mut()?; |
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264 |
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265 let check_exec = hg::checkexec::check_exec(repo.working_directory_path()); |
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266 |
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267 let options = StatusOptions { |
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268 check_exec, |
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269 list_clean: display_states.clean, |
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270 list_unknown: display_states.unknown, |
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271 list_ignored: display_states.ignored, |
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272 list_copies, |
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273 collect_traversed_dirs: false, |
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274 }; |
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275 |
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276 type StatusResult<'a> = |
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277 Result<(DirstateStatus<'a>, Vec<PatternFileWarning>), StatusError>; |
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278 |
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279 let after_status = |res: StatusResult| -> Result<_, CommandError> { |
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280 let (mut ds_status, pattern_warnings) = res?; |
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281 for warning in pattern_warnings { |
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282 ui.write_stderr(&format_pattern_file_warning(&warning, repo))?; |
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283 } |
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284 |
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285 for (path, error) in ds_status.bad { |
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286 let error = match error { |
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287 hg::BadMatch::OsError(code) => { |
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288 std::io::Error::from_raw_os_error(code).to_string() |
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289 } |
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290 hg::BadMatch::BadType(ty) => { |
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291 format!("unsupported file type (type is {})", ty) |
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292 } |
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293 }; |
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294 ui.write_stderr(&format_bytes!( |
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295 b"{}: {}\n", |
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296 path.as_bytes(), |
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297 error.as_bytes() |
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298 ))? |
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299 } |
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300 if !ds_status.unsure.is_empty() { |
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301 info!( |
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302 "Files to be rechecked by retrieval from filelog: {:?}", |
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303 ds_status.unsure.iter().map(|s| &s.path).collect::<Vec<_>>() |
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304 ); |
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305 } |
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306 let mut fixup = Vec::new(); |
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307 if !ds_status.unsure.is_empty() |
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308 && (display_states.modified || display_states.clean) |
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309 { |
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310 let p1 = repo.dirstate_parents()?.p1; |
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311 let manifest = repo.manifest_for_node(p1).map_err(|e| { |
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312 CommandError::from((e, &*format!("{:x}", p1.short()))) |
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313 })?; |
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314 let working_directory_vfs = repo.working_directory_vfs(); |
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315 let store_vfs = repo.store_vfs(); |
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316 let res: Vec<_> = ds_status |
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317 .unsure |
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318 .into_par_iter() |
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319 .map(|to_check| { |
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320 // The compiler seems to get a bit confused with complex |
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321 // inference when using a parallel iterator + map |
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322 // + map_err + collect, so let's just inline some of the |
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323 // logic. |
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324 match unsure_is_modified( |
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325 working_directory_vfs, |
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326 store_vfs, |
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327 check_exec, |
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328 &manifest, |
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329 &to_check.path, |
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330 ) { |
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331 Err(HgError::IoError { .. }) => { |
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332 // IO errors most likely stem from the file being |
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333 // deleted even though we know it's in the |
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334 // dirstate. |
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335 Ok((to_check, UnsureOutcome::Deleted)) |
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336 } |
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337 Ok(outcome) => Ok((to_check, outcome)), |
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338 Err(e) => Err(e), |
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339 } |
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340 }) |
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341 .collect::<Result<_, _>>()?; |
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342 for (status_path, outcome) in res.into_iter() { |
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343 match outcome { |
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344 UnsureOutcome::Clean => { |
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345 if display_states.clean { |
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346 ds_status.clean.push(status_path.clone()); |
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347 } |
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348 fixup.push(status_path.path.into_owned()) |
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349 } |
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350 UnsureOutcome::Modified => { |
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351 if display_states.modified { |
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352 ds_status.modified.push(status_path); |
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353 } |
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354 } |
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355 UnsureOutcome::Deleted => { |
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356 if display_states.deleted { |
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357 ds_status.deleted.push(status_path); |
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358 } |
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359 } |
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360 } |
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361 } |
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362 } |
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363 let relative_paths = config |
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364 .get_option(b"commands", b"status.relative")? |
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365 .unwrap_or(config.get_bool(b"ui", b"relative-paths")?); |
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366 let output = DisplayStatusPaths { |
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367 ui, |
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368 no_status, |
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369 relativize: if relative_paths { |
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370 Some(RelativizePaths::new(repo)?) |
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371 } else { |
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372 None |
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373 }, |
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374 print0, |
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375 }; |
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376 if display_states.modified { |
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377 output.display(b"M ", "status.modified", ds_status.modified)?; |
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378 } |
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379 if display_states.added { |
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380 output.display(b"A ", "status.added", ds_status.added)?; |
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381 } |
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382 if display_states.removed { |
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383 output.display(b"R ", "status.removed", ds_status.removed)?; |
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384 } |
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385 if display_states.deleted { |
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386 output.display(b"! ", "status.deleted", ds_status.deleted)?; |
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387 } |
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388 if display_states.unknown { |
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389 output.display(b"? ", "status.unknown", ds_status.unknown)?; |
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390 } |
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391 if display_states.ignored { |
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392 output.display(b"I ", "status.ignored", ds_status.ignored)?; |
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393 } |
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394 if display_states.clean { |
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395 output.display(b"C ", "status.clean", ds_status.clean)?; |
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396 } |
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397 |
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398 let dirstate_write_needed = ds_status.dirty; |
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399 let filesystem_time_at_status_start = |
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400 ds_status.filesystem_time_at_status_start; |
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401 |
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402 Ok(( |
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403 fixup, |
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404 dirstate_write_needed, |
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405 filesystem_time_at_status_start, |
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406 )) |
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407 }; |
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408 let (narrow_matcher, narrow_warnings) = narrow::matcher(repo)?; |
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409 let (sparse_matcher, sparse_warnings) = sparse::matcher(repo)?; |
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410 let matcher = match (repo.has_narrow(), repo.has_sparse()) { |
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411 (true, true) => { |
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412 Box::new(IntersectionMatcher::new(narrow_matcher, sparse_matcher)) |
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413 } |
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414 (true, false) => narrow_matcher, |
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415 (false, true) => sparse_matcher, |
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416 (false, false) => Box::new(AlwaysMatcher), |
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417 }; |
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418 |
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419 print_narrow_sparse_warnings( |
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420 &narrow_warnings, |
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421 &sparse_warnings, |
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422 ui, |
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423 repo, |
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424 )?; |
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425 let (fixup, mut dirstate_write_needed, filesystem_time_at_status_start) = |
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426 dmap.with_status( |
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427 matcher.as_ref(), |
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428 repo.working_directory_path().to_owned(), |
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429 ignore_files(repo, config), |
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430 options, |
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431 after_status, |
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432 )?; |
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433 |
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434 // Development config option to test write races |
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435 if let Err(e) = |
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436 debug_wait_for_file(config, "status.pre-dirstate-write-file") |
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437 { |
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438 ui.write_stderr(e.as_bytes()).ok(); |
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439 } |
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440 |
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441 if (fixup.is_empty() || filesystem_time_at_status_start.is_none()) |
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442 && !dirstate_write_needed |
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443 { |
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444 // Nothing to update |
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445 return Ok(()); |
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446 } |
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447 |
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448 // Update the dirstate on disk if we can |
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449 let with_lock_result = |
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450 repo.try_with_wlock_no_wait(|| -> Result<(), CommandError> { |
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451 if let Some(mtime_boundary) = filesystem_time_at_status_start { |
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452 for hg_path in fixup { |
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453 use std::os::unix::fs::MetadataExt; |
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454 let fs_path = hg_path_to_path_buf(&hg_path) |
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455 .expect("HgPath conversion"); |
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456 // Specifically do not reuse `fs_metadata` from |
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457 // `unsure_is_clean` which was needed before reading |
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458 // contents. Here we access metadata again after reading |
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459 // content, in case it changed in the meantime. |
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460 let metadata_res = repo |
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461 .working_directory_vfs() |
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462 .symlink_metadata(&fs_path); |
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463 let fs_metadata = match metadata_res { |
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464 Ok(meta) => meta, |
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465 Err(err) => match err { |
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466 HgError::IoError { .. } => { |
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467 // The file has probably been deleted. In any |
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468 // case, it was in the dirstate before, so |
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469 // let's ignore the error. |
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470 continue; |
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471 } |
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472 _ => return Err(err.into()), |
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473 }, |
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474 }; |
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475 if let Some(mtime) = |
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476 TruncatedTimestamp::for_reliable_mtime_of( |
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477 &fs_metadata, |
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478 &mtime_boundary, |
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479 ) |
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480 .when_reading_file(&fs_path)? |
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481 { |
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482 let mode = fs_metadata.mode(); |
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483 let size = fs_metadata.len(); |
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484 dmap.set_clean(&hg_path, mode, size as u32, mtime)?; |
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485 dirstate_write_needed = true |
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486 } |
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487 } |
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488 } |
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489 drop(dmap); // Avoid "already mutably borrowed" RefCell panics |
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490 if dirstate_write_needed { |
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491 repo.write_dirstate()? |
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492 } |
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493 Ok(()) |
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494 }); |
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495 match with_lock_result { |
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496 Ok(closure_result) => closure_result?, |
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497 Err(LockError::AlreadyHeld) => { |
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498 // Not updating the dirstate is not ideal but not critical: |
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499 // don’t keep our caller waiting until some other Mercurial |
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500 // process releases the lock. |
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501 log::info!("not writing dirstate from `status`: lock is held") |
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502 } |
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503 Err(LockError::Other(HgError::IoError { error, .. })) |
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504 if error.kind() == io::ErrorKind::PermissionDenied => |
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505 { |
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506 // `hg status` on a read-only repository is fine |
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507 } |
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508 Err(LockError::Other(error)) => { |
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509 // Report other I/O errors |
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510 Err(error)? |
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511 } |
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512 } |
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513 Ok(()) |
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514 } |
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515 |
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516 fn ignore_files(repo: &Repo, config: &Config) -> Vec<PathBuf> { |
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517 let mut ignore_files = Vec::new(); |
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518 let repo_ignore = repo.working_directory_vfs().join(".hgignore"); |
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519 if repo_ignore.exists() { |
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520 ignore_files.push(repo_ignore) |
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521 } |
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522 for (key, value) in config.iter_section(b"ui") { |
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523 if key == b"ignore" || key.starts_with(b"ignore.") { |
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524 let path = get_path_from_bytes(value); |
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525 // TODO:Â expand "~/" and environment variable here, like Python |
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526 // does with `os.path.expanduser` and `os.path.expandvars` |
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527 |
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528 let joined = repo.working_directory_path().join(path); |
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529 ignore_files.push(joined); |
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530 } |
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531 } |
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532 ignore_files |
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533 } |
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534 |
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535 struct DisplayStatusPaths<'a> { |
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536 ui: &'a Ui, |
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537 no_status: bool, |
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538 relativize: Option<RelativizePaths>, |
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539 print0: bool, |
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540 } |
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541 |
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542 impl DisplayStatusPaths<'_> { |
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543 // Probably more elegant to use a Deref or Borrow trait rather than |
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544 // harcode HgPathBuf, but probably not really useful at this point |
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545 fn display( |
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546 &self, |
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547 status_prefix: &[u8], |
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548 label: &'static str, |
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549 mut paths: Vec<StatusPath<'_>>, |
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550 ) -> Result<(), CommandError> { |
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551 paths.sort_unstable(); |
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552 // TODO: get the stdout lock once for the whole loop |
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553 // instead of in each write |
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554 for StatusPath { path, copy_source } in paths { |
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555 let relative_path; |
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556 let relative_source; |
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557 let (path, copy_source) = if let Some(relativize) = |
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558 &self.relativize |
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559 { |
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560 relative_path = relativize.relativize(&path); |
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561 relative_source = |
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562 copy_source.as_ref().map(|s| relativize.relativize(s)); |
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563 (&*relative_path, relative_source.as_deref()) |
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564 } else { |
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565 (path.as_bytes(), copy_source.as_ref().map(|s| s.as_bytes())) |
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566 }; |
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567 // TODO: Add a way to use `write_bytes!` instead of `format_bytes!` |
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568 // in order to stream to stdout instead of allocating an |
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569 // itermediate `Vec<u8>`. |
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570 if !self.no_status { |
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571 self.ui.write_stdout_labelled(status_prefix, label)? |
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572 } |
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573 let linebreak = if self.print0 { b"\x00" } else { b"\n" }; |
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574 self.ui.write_stdout_labelled( |
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575 &format_bytes!(b"{}{}", path, linebreak), |
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576 label, |
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577 )?; |
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578 if let Some(source) = copy_source.filter(|_| !self.no_status) { |
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579 let label = "status.copied"; |
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580 self.ui.write_stdout_labelled( |
50463 | 581 &format_bytes!(b" {}{}", source, linebreak), |
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582 label, |
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583 )? |
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584 } |
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585 } |
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586 Ok(()) |
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587 } |
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588 } |
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589 |
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590 /// Outcome of the additional check for an ambiguous tracked file |
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591 enum UnsureOutcome { |
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592 /// The file is actually clean |
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593 Clean, |
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594 /// The file has been modified |
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595 Modified, |
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596 /// The file was deleted on disk (or became another type of fs entry) |
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597 Deleted, |
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598 } |
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599 |
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600 /// Check if a file is modified by comparing actual repo store and file system. |
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601 /// |
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602 /// This meant to be used for those that the dirstate cannot resolve, due |
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603 /// to time resolution limits. |
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604 fn unsure_is_modified( |
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605 working_directory_vfs: hg::vfs::Vfs, |
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606 store_vfs: hg::vfs::Vfs, |
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607 check_exec: bool, |
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608 manifest: &Manifest, |
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609 hg_path: &HgPath, |
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610 ) -> Result<UnsureOutcome, HgError> { |
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611 let vfs = working_directory_vfs; |
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612 let fs_path = hg_path_to_path_buf(hg_path).expect("HgPath conversion"); |
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613 let fs_metadata = vfs.symlink_metadata(&fs_path)?; |
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614 let is_symlink = fs_metadata.file_type().is_symlink(); |
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615 |
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616 let entry = manifest |
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617 .find_by_path(hg_path)? |
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618 .expect("ambgious file not in p1"); |
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619 |
48391
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620 // TODO: Also account for `FALLBACK_SYMLINK` and `FALLBACK_EXEC` from the |
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621 // dirstate |
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622 let fs_flags = if is_symlink { |
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623 Some(b'l') |
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624 } else if check_exec && has_exec_bit(&fs_metadata) { |
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625 Some(b'x') |
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626 } else { |
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627 None |
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628 }; |
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629 |
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630 let entry_flags = if check_exec { |
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631 entry.flags |
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632 } else if entry.flags == Some(b'x') { |
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633 None |
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634 } else { |
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635 entry.flags |
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636 }; |
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637 |
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638 if entry_flags != fs_flags { |
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639 return Ok(UnsureOutcome::Modified); |
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640 } |
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641 let filelog = hg::filelog::Filelog::open_vfs(&store_vfs, hg_path)?; |
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642 let fs_len = fs_metadata.len(); |
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643 let file_node = entry.node_id()?; |
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644 let filelog_entry = filelog.entry_for_node(file_node).map_err(|_| { |
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645 HgError::corrupted(format!( |
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646 "filelog {:?} missing node {:?} from manifest", |
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647 hg_path, file_node |
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648 )) |
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649 })?; |
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650 if filelog_entry.file_data_len_not_equal_to(fs_len) { |
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651 // No need to read file contents: |
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652 // it cannot be equal if it has a different length. |
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653 return Ok(UnsureOutcome::Modified); |
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654 } |
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655 |
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656 let p1_filelog_data = filelog_entry.data()?; |
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657 let p1_contents = p1_filelog_data.file_data()?; |
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658 if p1_contents.len() as u64 != fs_len { |
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659 // No need to read file contents: |
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660 // it cannot be equal if it has a different length. |
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661 return Ok(UnsureOutcome::Modified); |
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662 } |
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663 |
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664 let fs_contents = if is_symlink { |
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665 get_bytes_from_os_string(vfs.read_link(fs_path)?.into_os_string()) |
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666 } else { |
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667 vfs.read(fs_path)? |
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668 }; |
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669 |
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670 Ok(if p1_contents != &*fs_contents { |
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671 UnsureOutcome::Modified |
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672 } else { |
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673 UnsureOutcome::Clean |
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674 }) |
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675 } |