Mercurial > hg
annotate rust/hg-core/src/dirstate/status.rs @ 47329:717a94b423b9
merge with stable
author | Matt Harbison <matt_harbison@yahoo.com> |
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date | Fri, 28 May 2021 17:33:20 -0400 |
parents | be579775c2d9 c8f62920f07a |
children | ed1583a845d2 |
rev | line source |
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1 // status.rs |
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2 // |
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3 // Copyright 2019 Raphaël Gomès <rgomes@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 //! Rust implementation of dirstate.status (dirstate.py). |
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9 //! It is currently missing a lot of functionality compared to the Python one |
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10 //! and will only be triggered in narrow cases. |
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11 |
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12 use crate::utils::path_auditor::PathAuditor; |
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13 use crate::{ |
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14 dirstate::SIZE_FROM_OTHER_PARENT, |
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15 filepatterns::PatternFileWarning, |
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16 matchers::{get_ignore_function, Matcher, VisitChildrenSet}, |
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17 utils::{ |
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18 files::{find_dirs, HgMetadata}, |
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19 hg_path::{ |
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20 hg_path_to_path_buf, os_string_to_hg_path_buf, HgPath, HgPathBuf, |
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21 HgPathError, |
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22 }, |
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23 }, |
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24 CopyMap, DirstateEntry, DirstateMap, EntryState, FastHashMap, |
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25 PatternError, |
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26 }; |
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27 use lazy_static::lazy_static; |
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28 use micro_timer::timed; |
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29 use rayon::prelude::*; |
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30 use std::{ |
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31 borrow::Cow, |
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32 collections::HashSet, |
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33 fmt, |
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34 fs::{read_dir, DirEntry}, |
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35 io::ErrorKind, |
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36 ops::Deref, |
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37 path::{Path, PathBuf}, |
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38 }; |
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39 |
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40 /// Wrong type of file from a `BadMatch` |
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41 /// Note: a lot of those don't exist on all platforms. |
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42 #[derive(Debug, Copy, Clone)] |
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43 pub enum BadType { |
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44 CharacterDevice, |
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45 BlockDevice, |
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46 FIFO, |
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47 Socket, |
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48 Directory, |
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49 Unknown, |
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50 } |
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51 |
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52 impl fmt::Display for BadType { |
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53 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { |
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54 f.write_str(match self { |
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55 BadType::CharacterDevice => "character device", |
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56 BadType::BlockDevice => "block device", |
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57 BadType::FIFO => "fifo", |
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58 BadType::Socket => "socket", |
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59 BadType::Directory => "directory", |
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60 BadType::Unknown => "unknown", |
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61 }) |
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62 } |
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63 } |
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64 |
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65 /// Was explicitly matched but cannot be found/accessed |
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66 #[derive(Debug, Copy, Clone)] |
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67 pub enum BadMatch { |
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68 OsError(i32), |
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69 BadType(BadType), |
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70 } |
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71 |
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72 /// Enum used to dispatch new status entries into the right collections. |
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73 /// Is similar to `crate::EntryState`, but represents the transient state of |
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74 /// entries during the lifetime of a command. |
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75 #[derive(Debug, Copy, Clone)] |
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76 pub enum Dispatch { |
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77 Unsure, |
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78 Modified, |
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79 Added, |
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80 Removed, |
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81 Deleted, |
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82 Clean, |
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83 Unknown, |
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84 Ignored, |
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85 /// Empty dispatch, the file is not worth listing |
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86 None, |
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87 /// Was explicitly matched but cannot be found/accessed |
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88 Bad(BadMatch), |
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89 Directory { |
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90 /// True if the directory used to be a file in the dmap so we can say |
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91 /// that it's been removed. |
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92 was_file: bool, |
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93 }, |
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94 } |
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95 |
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96 type IoResult<T> = std::io::Result<T>; |
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97 |
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98 /// `Box<dyn Trait>` is syntactic sugar for `Box<dyn Trait + 'static>`, so add |
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99 /// an explicit lifetime here to not fight `'static` bounds "out of nowhere". |
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100 pub type IgnoreFnType<'a> = |
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101 Box<dyn for<'r> Fn(&'r HgPath) -> bool + Sync + 'a>; |
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102 |
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103 /// We have a good mix of owned (from directory traversal) and borrowed (from |
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104 /// the dirstate/explicit) paths, this comes up a lot. |
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105 pub type HgPathCow<'a> = Cow<'a, HgPath>; |
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106 |
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107 /// A path with its computed ``Dispatch`` information |
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108 type DispatchedPath<'a> = (HgPathCow<'a>, Dispatch); |
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109 |
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110 /// The conversion from `HgPath` to a real fs path failed. |
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111 /// `22` is the error code for "Invalid argument" |
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112 const INVALID_PATH_DISPATCH: Dispatch = Dispatch::Bad(BadMatch::OsError(22)); |
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113 |
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114 /// Dates and times that are outside the 31-bit signed range are compared |
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115 /// modulo 2^31. This should prevent hg from behaving badly with very large |
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116 /// files or corrupt dates while still having a high probability of detecting |
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117 /// changes. (issue2608) |
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118 /// TODO I haven't found a way of having `b` be `Into<i32>`, since `From<u64>` |
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119 /// is not defined for `i32`, and there is no `As` trait. This forces the |
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120 /// caller to cast `b` as `i32`. |
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121 fn mod_compare(a: i32, b: i32) -> bool { |
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122 a & i32::max_value() != b & i32::max_value() |
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123 } |
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124 |
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125 /// Return a sorted list containing information about the entries |
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126 /// in the directory. |
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127 /// |
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128 /// * `skip_dot_hg` - Return an empty vec if `path` contains a `.hg` directory |
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129 fn list_directory( |
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130 path: impl AsRef<Path>, |
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131 skip_dot_hg: bool, |
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132 ) -> std::io::Result<Vec<(HgPathBuf, DirEntry)>> { |
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133 let mut results = vec![]; |
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134 let entries = read_dir(path.as_ref())?; |
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135 |
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136 for entry in entries { |
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137 let entry = entry?; |
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138 let filename = os_string_to_hg_path_buf(entry.file_name())?; |
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139 let file_type = entry.file_type()?; |
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140 if skip_dot_hg && filename.as_bytes() == b".hg" && file_type.is_dir() { |
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141 return Ok(vec![]); |
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142 } else { |
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143 results.push((filename, entry)) |
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144 } |
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145 } |
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146 |
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147 results.sort_unstable_by_key(|e| e.0.clone()); |
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148 Ok(results) |
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149 } |
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150 |
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151 /// The file corresponding to the dirstate entry was found on the filesystem. |
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152 fn dispatch_found( |
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153 filename: impl AsRef<HgPath>, |
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154 entry: DirstateEntry, |
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155 metadata: HgMetadata, |
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156 copy_map: &CopyMap, |
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157 options: StatusOptions, |
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158 ) -> Dispatch { |
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159 let DirstateEntry { |
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160 state, |
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161 mode, |
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162 mtime, |
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163 size, |
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164 } = entry; |
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165 |
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166 let HgMetadata { |
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167 st_mode, |
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168 st_size, |
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169 st_mtime, |
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170 .. |
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171 } = metadata; |
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172 |
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173 match state { |
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174 EntryState::Normal => { |
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175 let size_changed = mod_compare(size, st_size as i32); |
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176 let mode_changed = |
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177 (mode ^ st_mode as i32) & 0o100 != 0o000 && options.check_exec; |
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178 let metadata_changed = size >= 0 && (size_changed || mode_changed); |
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179 let other_parent = size == SIZE_FROM_OTHER_PARENT; |
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180 |
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181 if metadata_changed |
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182 || other_parent |
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183 || copy_map.contains_key(filename.as_ref()) |
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184 { |
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185 if metadata.is_symlink() && size_changed { |
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186 // issue6456: Size returned may be longer due to encryption |
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187 // on EXT-4 fscrypt. TODO maybe only do it on EXT4? |
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188 Dispatch::Unsure |
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189 } else { |
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190 Dispatch::Modified |
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191 } |
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192 } else if mod_compare(mtime, st_mtime as i32) |
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193 || st_mtime == options.last_normal_time |
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194 { |
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195 // the file may have just been marked as normal and |
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196 // it may have changed in the same second without |
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197 // changing its size. This can happen if we quickly |
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198 // do multiple commits. Force lookup, so we don't |
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199 // miss such a racy file change. |
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200 Dispatch::Unsure |
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201 } else if options.list_clean { |
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202 Dispatch::Clean |
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203 } else { |
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204 Dispatch::None |
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205 } |
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206 } |
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207 EntryState::Merged => Dispatch::Modified, |
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208 EntryState::Added => Dispatch::Added, |
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209 EntryState::Removed => Dispatch::Removed, |
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210 EntryState::Unknown => Dispatch::Unknown, |
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211 } |
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212 } |
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213 |
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214 /// The file corresponding to this Dirstate entry is missing. |
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215 fn dispatch_missing(state: EntryState) -> Dispatch { |
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216 match state { |
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217 // File was removed from the filesystem during commands |
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218 EntryState::Normal | EntryState::Merged | EntryState::Added => { |
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219 Dispatch::Deleted |
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220 } |
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221 // File was removed, everything is normal |
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222 EntryState::Removed => Dispatch::Removed, |
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223 // File is unknown to Mercurial, everything is normal |
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224 EntryState::Unknown => Dispatch::Unknown, |
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225 } |
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226 } |
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227 |
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228 fn dispatch_os_error(e: &std::io::Error) -> Dispatch { |
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229 Dispatch::Bad(BadMatch::OsError( |
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230 e.raw_os_error().expect("expected real OS error"), |
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231 )) |
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232 } |
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233 |
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234 lazy_static! { |
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235 static ref DEFAULT_WORK: HashSet<&'static HgPath> = { |
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236 let mut h = HashSet::new(); |
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237 h.insert(HgPath::new(b"")); |
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238 h |
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239 }; |
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240 } |
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241 |
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242 #[derive(Debug, Copy, Clone)] |
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243 pub struct StatusOptions { |
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244 /// Remember the most recent modification timeslot for status, to make |
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245 /// sure we won't miss future size-preserving file content modifications |
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246 /// that happen within the same timeslot. |
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247 pub last_normal_time: i64, |
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248 /// Whether we are on a filesystem with UNIX-like exec flags |
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249 pub check_exec: bool, |
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250 pub list_clean: bool, |
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251 pub list_unknown: bool, |
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252 pub list_ignored: bool, |
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253 /// Whether to collect traversed dirs for applying a callback later. |
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254 /// Used by `hg purge` for example. |
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255 pub collect_traversed_dirs: bool, |
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256 } |
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257 |
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258 #[derive(Debug, Default)] |
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259 pub struct DirstateStatus<'a> { |
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260 /// Tracked files whose contents have changed since the parent revision |
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261 pub modified: Vec<HgPathCow<'a>>, |
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262 |
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263 /// Newly-tracked files that were not present in the parent |
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264 pub added: Vec<HgPathCow<'a>>, |
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265 |
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266 /// Previously-tracked files that have been (re)moved with an hg command |
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267 pub removed: Vec<HgPathCow<'a>>, |
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268 |
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269 /// (Still) tracked files that are missing, (re)moved with an non-hg |
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270 /// command |
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271 pub deleted: Vec<HgPathCow<'a>>, |
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272 |
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273 /// Tracked files that are up to date with the parent. |
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274 /// Only pupulated if `StatusOptions::list_clean` is true. |
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275 pub clean: Vec<HgPathCow<'a>>, |
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276 |
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277 /// Files in the working directory that are ignored with `.hgignore`. |
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278 /// Only pupulated if `StatusOptions::list_ignored` is true. |
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279 pub ignored: Vec<HgPathCow<'a>>, |
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280 |
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281 /// Files in the working directory that are neither tracked nor ignored. |
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282 /// Only pupulated if `StatusOptions::list_unknown` is true. |
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283 pub unknown: Vec<HgPathCow<'a>>, |
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284 |
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285 /// Was explicitly matched but cannot be found/accessed |
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286 pub bad: Vec<(HgPathCow<'a>, BadMatch)>, |
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287 |
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288 /// Either clean or modified, but we can’t tell from filesystem metadata |
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289 /// alone. The file contents need to be read and compared with that in |
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290 /// the parent. |
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291 pub unsure: Vec<HgPathCow<'a>>, |
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292 |
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293 /// Only filled if `collect_traversed_dirs` is `true` |
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294 pub traversed: Vec<HgPathBuf>, |
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295 } |
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296 |
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297 #[derive(Debug, derive_more::From)] |
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298 pub enum StatusError { |
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299 /// Generic IO error |
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300 IO(std::io::Error), |
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301 /// An invalid path that cannot be represented in Mercurial was found |
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302 Path(HgPathError), |
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303 /// An invalid "ignore" pattern was found |
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304 Pattern(PatternError), |
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305 } |
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306 |
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307 pub type StatusResult<T> = Result<T, StatusError>; |
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308 |
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309 impl fmt::Display for StatusError { |
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310 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { |
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311 match self { |
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312 StatusError::IO(error) => error.fmt(f), |
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313 StatusError::Path(error) => error.fmt(f), |
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314 StatusError::Pattern(error) => error.fmt(f), |
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315 } |
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316 } |
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317 } |
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318 |
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319 /// Gives information about which files are changed in the working directory |
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320 /// and how, compared to the revision we're based on |
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321 pub struct Status<'a, M: ?Sized + Matcher + Sync> { |
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322 dmap: &'a DirstateMap, |
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323 pub(crate) matcher: &'a M, |
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324 root_dir: PathBuf, |
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325 pub(crate) options: StatusOptions, |
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326 ignore_fn: IgnoreFnType<'a>, |
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327 } |
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328 |
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329 impl<'a, M> Status<'a, M> |
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330 where |
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331 M: ?Sized + Matcher + Sync, |
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332 { |
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333 pub fn new( |
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334 dmap: &'a DirstateMap, |
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335 matcher: &'a M, |
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336 root_dir: PathBuf, |
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337 ignore_files: Vec<PathBuf>, |
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338 options: StatusOptions, |
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339 ) -> StatusResult<(Self, Vec<PatternFileWarning>)> { |
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340 // Needs to outlive `dir_ignore_fn` since it's captured. |
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341 |
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342 let (ignore_fn, warnings): (IgnoreFnType, _) = |
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343 if options.list_ignored || options.list_unknown { |
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344 get_ignore_function(ignore_files, &root_dir)? |
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345 } else { |
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346 (Box::new(|&_| true), vec![]) |
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347 }; |
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348 |
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349 Ok(( |
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350 Self { |
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351 dmap, |
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352 matcher, |
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353 root_dir, |
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354 options, |
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355 ignore_fn, |
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356 }, |
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357 warnings, |
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358 )) |
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359 } |
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360 |
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361 /// Is the path ignored? |
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362 pub fn is_ignored(&self, path: impl AsRef<HgPath>) -> bool { |
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363 (self.ignore_fn)(path.as_ref()) |
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364 } |
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365 |
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366 /// Is the path or one of its ancestors ignored? |
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367 pub fn dir_ignore(&self, dir: impl AsRef<HgPath>) -> bool { |
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368 // Only involve ignore mechanism if we're listing unknowns or ignored. |
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369 if self.options.list_ignored || self.options.list_unknown { |
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370 if self.is_ignored(&dir) { |
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371 true |
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372 } else { |
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373 for p in find_dirs(dir.as_ref()) { |
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374 if self.is_ignored(p) { |
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375 return true; |
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376 } |
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377 } |
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378 false |
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379 } |
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380 } else { |
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381 true |
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382 } |
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383 } |
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384 |
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385 /// Get stat data about the files explicitly specified by the matcher. |
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386 /// Returns a tuple of the directories that need to be traversed and the |
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387 /// files with their corresponding `Dispatch`. |
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388 /// TODO subrepos |
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389 #[timed] |
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390 pub fn walk_explicit( |
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391 &self, |
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392 traversed_sender: crossbeam_channel::Sender<HgPathBuf>, |
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393 ) -> (Vec<DispatchedPath<'a>>, Vec<DispatchedPath<'a>>) { |
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394 self.matcher |
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395 .file_set() |
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396 .unwrap_or(&DEFAULT_WORK) |
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397 .par_iter() |
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398 .flat_map(|&filename| -> Option<_> { |
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399 // TODO normalization |
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400 let normalized = filename; |
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401 |
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402 let buf = match hg_path_to_path_buf(normalized) { |
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403 Ok(x) => x, |
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404 Err(_) => { |
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405 return Some(( |
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406 Cow::Borrowed(normalized), |
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407 INVALID_PATH_DISPATCH, |
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408 )) |
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409 } |
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410 }; |
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411 let target = self.root_dir.join(buf); |
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412 let st = target.symlink_metadata(); |
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413 let in_dmap = self.dmap.get(normalized); |
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414 match st { |
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415 Ok(meta) => { |
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416 let file_type = meta.file_type(); |
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417 return if file_type.is_file() || file_type.is_symlink() |
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418 { |
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419 if let Some(entry) = in_dmap { |
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420 return Some(( |
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421 Cow::Borrowed(normalized), |
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422 dispatch_found( |
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423 &normalized, |
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424 *entry, |
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425 HgMetadata::from_metadata(meta), |
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426 &self.dmap.copy_map, |
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427 self.options, |
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428 ), |
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429 )); |
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430 } |
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431 Some(( |
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432 Cow::Borrowed(normalized), |
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433 Dispatch::Unknown, |
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434 )) |
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435 } else if file_type.is_dir() { |
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436 if self.options.collect_traversed_dirs { |
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437 traversed_sender |
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438 .send(normalized.to_owned()) |
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439 .expect("receiver should outlive sender"); |
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440 } |
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441 Some(( |
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442 Cow::Borrowed(normalized), |
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443 Dispatch::Directory { |
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444 was_file: in_dmap.is_some(), |
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445 }, |
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446 )) |
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447 } else { |
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448 Some(( |
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449 Cow::Borrowed(normalized), |
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450 Dispatch::Bad(BadMatch::BadType( |
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451 // TODO do more than unknown |
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452 // Support for all `BadType` variant |
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453 // varies greatly between platforms. |
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454 // So far, no tests check the type and |
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455 // this should be good enough for most |
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456 // users. |
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457 BadType::Unknown, |
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458 )), |
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459 )) |
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460 }; |
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461 } |
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462 Err(_) => { |
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463 if let Some(entry) = in_dmap { |
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464 return Some(( |
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465 Cow::Borrowed(normalized), |
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466 dispatch_missing(entry.state), |
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467 )); |
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468 } |
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469 } |
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470 }; |
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471 None |
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472 }) |
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473 .partition(|(_, dispatch)| match dispatch { |
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474 Dispatch::Directory { .. } => true, |
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475 _ => false, |
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476 }) |
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477 } |
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478 |
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479 /// Walk the working directory recursively to look for changes compared to |
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480 /// the current `DirstateMap`. |
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481 /// |
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482 /// This takes a mutable reference to the results to account for the |
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483 /// `extend` in timings |
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484 #[timed] |
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485 pub fn traverse( |
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486 &self, |
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487 path: impl AsRef<HgPath>, |
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488 old_results: &FastHashMap<HgPathCow<'a>, Dispatch>, |
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489 results: &mut Vec<DispatchedPath<'a>>, |
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490 traversed_sender: crossbeam_channel::Sender<HgPathBuf>, |
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491 ) { |
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492 // The traversal is done in parallel, so use a channel to gather |
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493 // entries. `crossbeam_channel::Sender` is `Sync`, while `mpsc::Sender` |
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494 // is not. |
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495 let (files_transmitter, files_receiver) = |
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496 crossbeam_channel::unbounded(); |
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497 |
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498 self.traverse_dir( |
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499 &files_transmitter, |
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500 path, |
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501 &old_results, |
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502 traversed_sender, |
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503 ); |
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504 |
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505 // Disconnect the channel so the receiver stops waiting |
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506 drop(files_transmitter); |
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507 |
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508 let new_results = files_receiver |
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509 .into_iter() |
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510 .par_bridge() |
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511 .map(|(f, d)| (Cow::Owned(f), d)); |
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512 |
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513 results.par_extend(new_results); |
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514 } |
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515 |
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516 /// Dispatch a single entry (file, folder, symlink...) found during |
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517 /// `traverse`. If the entry is a folder that needs to be traversed, it |
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518 /// will be handled in a separate thread. |
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519 fn handle_traversed_entry<'b>( |
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520 &'a self, |
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521 scope: &rayon::Scope<'b>, |
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522 files_sender: &'b crossbeam_channel::Sender<(HgPathBuf, Dispatch)>, |
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523 old_results: &'a FastHashMap<Cow<HgPath>, Dispatch>, |
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524 filename: HgPathBuf, |
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525 dir_entry: DirEntry, |
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526 traversed_sender: crossbeam_channel::Sender<HgPathBuf>, |
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527 ) -> IoResult<()> |
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528 where |
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529 'a: 'b, |
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530 { |
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531 let file_type = dir_entry.file_type()?; |
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532 let entry_option = self.dmap.get(&filename); |
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533 |
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534 if filename.as_bytes() == b".hg" { |
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535 // Could be a directory or a symlink |
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536 return Ok(()); |
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537 } |
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538 |
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539 if file_type.is_dir() { |
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540 self.handle_traversed_dir( |
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541 scope, |
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542 files_sender, |
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543 old_results, |
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544 entry_option, |
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545 filename, |
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546 traversed_sender, |
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547 ); |
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548 } else if file_type.is_file() || file_type.is_symlink() { |
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549 if let Some(entry) = entry_option { |
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550 if self.matcher.matches_everything() |
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551 || self.matcher.matches(&filename) |
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552 { |
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553 let metadata = dir_entry.metadata()?; |
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554 files_sender |
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555 .send(( |
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556 filename.to_owned(), |
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557 dispatch_found( |
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558 &filename, |
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559 *entry, |
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560 HgMetadata::from_metadata(metadata), |
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561 &self.dmap.copy_map, |
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562 self.options, |
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563 ), |
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564 )) |
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565 .unwrap(); |
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566 } |
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567 } else if (self.matcher.matches_everything() |
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568 || self.matcher.matches(&filename)) |
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569 && !self.is_ignored(&filename) |
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570 { |
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571 if (self.options.list_ignored |
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572 || self.matcher.exact_match(&filename)) |
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573 && self.dir_ignore(&filename) |
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574 { |
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575 if self.options.list_ignored { |
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576 files_sender |
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577 .send((filename.to_owned(), Dispatch::Ignored)) |
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578 .unwrap(); |
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579 } |
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580 } else if self.options.list_unknown { |
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581 files_sender |
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582 .send((filename.to_owned(), Dispatch::Unknown)) |
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583 .unwrap(); |
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584 } |
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585 } else if self.is_ignored(&filename) && self.options.list_ignored { |
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586 if self.matcher.matches(&filename) { |
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587 files_sender |
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588 .send((filename.to_owned(), Dispatch::Ignored)) |
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589 .unwrap(); |
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590 } |
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591 } |
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592 } else if let Some(entry) = entry_option { |
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593 // Used to be a file or a folder, now something else. |
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594 if self.matcher.matches_everything() |
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595 || self.matcher.matches(&filename) |
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596 { |
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597 files_sender |
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598 .send((filename.to_owned(), dispatch_missing(entry.state))) |
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599 .unwrap(); |
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600 } |
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601 } |
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602 |
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603 Ok(()) |
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604 } |
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605 |
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606 /// A directory was found in the filesystem and needs to be traversed |
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607 fn handle_traversed_dir<'b>( |
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608 &'a self, |
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609 scope: &rayon::Scope<'b>, |
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610 files_sender: &'b crossbeam_channel::Sender<(HgPathBuf, Dispatch)>, |
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611 old_results: &'a FastHashMap<Cow<HgPath>, Dispatch>, |
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612 entry_option: Option<&'a DirstateEntry>, |
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613 directory: HgPathBuf, |
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614 traversed_sender: crossbeam_channel::Sender<HgPathBuf>, |
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615 ) where |
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616 'a: 'b, |
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617 { |
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618 scope.spawn(move |_| { |
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619 // Nested `if` until `rust-lang/rust#53668` is stable |
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620 if let Some(entry) = entry_option { |
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621 // Used to be a file, is now a folder |
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622 if self.matcher.matches_everything() |
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623 || self.matcher.matches(&directory) |
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624 { |
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625 files_sender |
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626 .send(( |
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627 directory.to_owned(), |
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628 dispatch_missing(entry.state), |
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629 )) |
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630 .unwrap(); |
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631 } |
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632 } |
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633 // Do we need to traverse it? |
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634 if !self.is_ignored(&directory) || self.options.list_ignored { |
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635 self.traverse_dir( |
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636 files_sender, |
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637 directory, |
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638 &old_results, |
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639 traversed_sender, |
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640 ) |
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641 } |
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642 }); |
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643 } |
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644 |
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645 /// Decides whether the directory needs to be listed, and if so handles the |
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646 /// entries in a separate thread. |
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647 fn traverse_dir( |
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648 &self, |
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649 files_sender: &crossbeam_channel::Sender<(HgPathBuf, Dispatch)>, |
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650 directory: impl AsRef<HgPath>, |
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651 old_results: &FastHashMap<Cow<HgPath>, Dispatch>, |
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652 traversed_sender: crossbeam_channel::Sender<HgPathBuf>, |
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653 ) { |
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654 let directory = directory.as_ref(); |
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655 |
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656 if self.options.collect_traversed_dirs { |
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657 traversed_sender |
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658 .send(directory.to_owned()) |
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659 .expect("receiver should outlive sender"); |
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660 } |
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661 |
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662 let visit_entries = match self.matcher.visit_children_set(directory) { |
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663 VisitChildrenSet::Empty => return, |
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664 VisitChildrenSet::This | VisitChildrenSet::Recursive => None, |
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665 VisitChildrenSet::Set(set) => Some(set), |
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666 }; |
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667 let buf = match hg_path_to_path_buf(directory) { |
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668 Ok(b) => b, |
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669 Err(_) => { |
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670 files_sender |
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671 .send((directory.to_owned(), INVALID_PATH_DISPATCH)) |
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672 .expect("receiver should outlive sender"); |
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673 return; |
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674 } |
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675 }; |
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676 let dir_path = self.root_dir.join(buf); |
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677 |
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678 let skip_dot_hg = !directory.as_bytes().is_empty(); |
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679 let entries = match list_directory(dir_path, skip_dot_hg) { |
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680 Err(e) => { |
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681 files_sender |
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682 .send((directory.to_owned(), dispatch_os_error(&e))) |
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683 .expect("receiver should outlive sender"); |
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684 return; |
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685 } |
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686 Ok(entries) => entries, |
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687 }; |
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688 |
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689 rayon::scope(|scope| { |
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690 for (filename, dir_entry) in entries { |
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691 if let Some(ref set) = visit_entries { |
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692 if !set.contains(filename.deref()) { |
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693 continue; |
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694 } |
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695 } |
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696 // TODO normalize |
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697 let filename = if directory.is_empty() { |
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698 filename.to_owned() |
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699 } else { |
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700 directory.join(&filename) |
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701 }; |
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702 |
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703 if !old_results.contains_key(filename.deref()) { |
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704 match self.handle_traversed_entry( |
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705 scope, |
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706 files_sender, |
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707 old_results, |
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708 filename, |
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709 dir_entry, |
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710 traversed_sender.clone(), |
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711 ) { |
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712 Err(e) => { |
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713 files_sender |
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714 .send(( |
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715 directory.to_owned(), |
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716 dispatch_os_error(&e), |
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717 )) |
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718 .expect("receiver should outlive sender"); |
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719 } |
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720 Ok(_) => {} |
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721 } |
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722 } |
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723 } |
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724 }) |
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725 } |
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726 |
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727 /// Add the files in the dirstate to the results. |
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728 /// |
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729 /// This takes a mutable reference to the results to account for the |
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730 /// `extend` in timings |
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731 #[timed] |
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732 pub fn extend_from_dmap(&self, results: &mut Vec<DispatchedPath<'a>>) { |
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733 results.par_extend( |
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734 self.dmap |
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735 .par_iter() |
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736 .filter(|(path, _)| self.matcher.matches(path)) |
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737 .map(move |(filename, entry)| { |
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738 let filename: &HgPath = filename; |
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739 let filename_as_path = match hg_path_to_path_buf(filename) |
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740 { |
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741 Ok(f) => f, |
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742 Err(_) => { |
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743 return ( |
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744 Cow::Borrowed(filename), |
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745 INVALID_PATH_DISPATCH, |
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746 ) |
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747 } |
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748 }; |
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749 let meta = self |
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750 .root_dir |
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751 .join(filename_as_path) |
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752 .symlink_metadata(); |
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753 match meta { |
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754 Ok(m) |
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755 if !(m.file_type().is_file() |
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756 || m.file_type().is_symlink()) => |
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757 { |
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758 ( |
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759 Cow::Borrowed(filename), |
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760 dispatch_missing(entry.state), |
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761 ) |
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762 } |
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763 Ok(m) => ( |
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764 Cow::Borrowed(filename), |
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765 dispatch_found( |
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766 filename, |
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767 *entry, |
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768 HgMetadata::from_metadata(m), |
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769 &self.dmap.copy_map, |
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770 self.options, |
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771 ), |
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772 ), |
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773 Err(e) |
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774 if e.kind() == ErrorKind::NotFound |
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775 || e.raw_os_error() == Some(20) => |
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776 { |
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777 // Rust does not yet have an `ErrorKind` for |
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778 // `NotADirectory` (errno 20) |
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779 // It happens if the dirstate contains `foo/bar` |
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780 // and foo is not a |
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781 // directory |
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782 ( |
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783 Cow::Borrowed(filename), |
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784 dispatch_missing(entry.state), |
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785 ) |
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786 } |
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787 Err(e) => { |
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788 (Cow::Borrowed(filename), dispatch_os_error(&e)) |
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789 } |
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790 } |
46489
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791 }), |
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792 ); |
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793 } |
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794 |
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795 /// Checks all files that are in the dirstate but were not found during the |
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796 /// working directory traversal. This means that the rest must |
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797 /// be either ignored, under a symlink or under a new nested repo. |
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798 /// |
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799 /// This takes a mutable reference to the results to account for the |
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800 /// `extend` in timings |
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801 #[timed] |
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802 pub fn handle_unknowns(&self, results: &mut Vec<DispatchedPath<'a>>) { |
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803 let to_visit: Vec<(&HgPath, &DirstateEntry)> = |
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804 if results.is_empty() && self.matcher.matches_everything() { |
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805 self.dmap.iter().map(|(f, e)| (f.deref(), e)).collect() |
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806 } else { |
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807 // Only convert to a hashmap if needed. |
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808 let old_results: FastHashMap<_, _> = |
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809 results.iter().cloned().collect(); |
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810 self.dmap |
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811 .iter() |
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812 .filter_map(move |(f, e)| { |
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813 if !old_results.contains_key(f.deref()) |
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814 && self.matcher.matches(f) |
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815 { |
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816 Some((f.deref(), e)) |
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817 } else { |
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818 None |
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819 } |
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820 }) |
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821 .collect() |
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822 }; |
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823 |
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824 let path_auditor = PathAuditor::new(&self.root_dir); |
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825 |
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826 let new_results = to_visit.into_par_iter().filter_map( |
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827 |(filename, entry)| -> Option<_> { |
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828 // Report ignored items in the dmap as long as they are not |
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829 // under a symlink directory. |
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830 if path_auditor.check(filename) { |
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831 // TODO normalize for case-insensitive filesystems |
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832 let buf = match hg_path_to_path_buf(filename) { |
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833 Ok(x) => x, |
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834 Err(_) => { |
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835 return Some(( |
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836 Cow::Owned(filename.to_owned()), |
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837 INVALID_PATH_DISPATCH, |
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838 )); |
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839 } |
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840 }; |
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841 Some(( |
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842 Cow::Owned(filename.to_owned()), |
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843 match self.root_dir.join(&buf).symlink_metadata() { |
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844 // File was just ignored, no links, and exists |
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845 Ok(meta) => { |
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846 let metadata = HgMetadata::from_metadata(meta); |
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847 dispatch_found( |
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848 filename, |
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849 *entry, |
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850 metadata, |
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851 &self.dmap.copy_map, |
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852 self.options, |
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853 ) |
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854 } |
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855 // File doesn't exist |
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856 Err(_) => dispatch_missing(entry.state), |
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857 }, |
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858 )) |
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859 } else { |
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860 // It's either missing or under a symlink directory which |
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861 // we, in this case, report as missing. |
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862 Some(( |
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863 Cow::Owned(filename.to_owned()), |
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864 dispatch_missing(entry.state), |
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865 )) |
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866 } |
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867 }, |
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868 ); |
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869 |
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870 results.par_extend(new_results); |
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871 } |
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872 } |
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873 |
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874 #[timed] |
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875 pub fn build_response<'a>( |
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876 results: impl IntoIterator<Item = DispatchedPath<'a>>, |
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877 traversed: Vec<HgPathBuf>, |
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878 ) -> DirstateStatus<'a> { |
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879 let mut unsure = vec![]; |
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880 let mut modified = vec![]; |
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881 let mut added = vec![]; |
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882 let mut removed = vec![]; |
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883 let mut deleted = vec![]; |
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884 let mut clean = vec![]; |
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885 let mut ignored = vec![]; |
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886 let mut unknown = vec![]; |
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887 let mut bad = vec![]; |
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888 |
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889 for (filename, dispatch) in results.into_iter() { |
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890 match dispatch { |
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891 Dispatch::Unknown => unknown.push(filename), |
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892 Dispatch::Unsure => unsure.push(filename), |
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893 Dispatch::Modified => modified.push(filename), |
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894 Dispatch::Added => added.push(filename), |
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895 Dispatch::Removed => removed.push(filename), |
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896 Dispatch::Deleted => deleted.push(filename), |
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897 Dispatch::Clean => clean.push(filename), |
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898 Dispatch::Ignored => ignored.push(filename), |
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899 Dispatch::None => {} |
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900 Dispatch::Bad(reason) => bad.push((filename, reason)), |
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901 Dispatch::Directory { .. } => {} |
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902 } |
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903 } |
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904 |
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905 DirstateStatus { |
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906 modified, |
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907 added, |
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908 removed, |
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909 deleted, |
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910 clean, |
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911 ignored, |
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912 unknown, |
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913 bad, |
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914 unsure, |
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915 traversed, |
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916 } |
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917 } |
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918 |
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919 /// Get the status of files in the working directory. |
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920 /// |
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921 /// This is the current entry-point for `hg-core` and is realistically unusable |
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922 /// outside of a Python context because its arguments need to provide a lot of |
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923 /// information that will not be necessary in the future. |
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924 #[timed] |
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925 pub fn status<'a>( |
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926 dmap: &'a DirstateMap, |
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927 matcher: &'a (dyn Matcher + Sync), |
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928 root_dir: PathBuf, |
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929 ignore_files: Vec<PathBuf>, |
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930 options: StatusOptions, |
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931 ) -> StatusResult<(DirstateStatus<'a>, Vec<PatternFileWarning>)> { |
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932 let (status, warnings) = |
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933 Status::new(dmap, matcher, root_dir, ignore_files, options)?; |
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934 |
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935 Ok((status.run()?, warnings)) |
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936 } |