Mercurial > hg
annotate rust/hg-core/src/dirstate/status.rs @ 46890:441024b279a6
rust: Remove the compile-time 'dirstate-tree' feature flag
This code has compiler errors since it is not built on CI and nobody has been
working on it for some time.
We (Octobus) are still pursuing status optimizations based on a tree data
structure for the dirstate, but upcoming patches will use a run-time opt-in
instead of compile-time, so that at least corresponding Rust code keeps
compiling when other changes are made.
Differential Revision: https://phab.mercurial-scm.org/D10329
author | Simon Sapin <simon.sapin@octobus.net> |
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date | Thu, 08 Apr 2021 21:46:54 +0200 |
parents | 3c9ddb1986a9 |
children | 787ff5d21bcd c8f62920f07a |
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 type IgnoreFnType<'a> = Box<dyn for<'r> Fn(&'r HgPath) -> bool + Sync + 'a>; |
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101 |
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102 /// We have a good mix of owned (from directory traversal) and borrowed (from |
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103 /// the dirstate/explicit) paths, this comes up a lot. |
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104 pub type HgPathCow<'a> = Cow<'a, HgPath>; |
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105 |
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106 /// A path with its computed ``Dispatch`` information |
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107 type DispatchedPath<'a> = (HgPathCow<'a>, Dispatch); |
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108 |
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109 /// The conversion from `HgPath` to a real fs path failed. |
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110 /// `22` is the error code for "Invalid argument" |
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111 const INVALID_PATH_DISPATCH: Dispatch = Dispatch::Bad(BadMatch::OsError(22)); |
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112 |
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113 /// Dates and times that are outside the 31-bit signed range are compared |
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114 /// modulo 2^31. This should prevent hg from behaving badly with very large |
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115 /// files or corrupt dates while still having a high probability of detecting |
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116 /// changes. (issue2608) |
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117 /// TODO I haven't found a way of having `b` be `Into<i32>`, since `From<u64>` |
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118 /// is not defined for `i32`, and there is no `As` trait. This forces the |
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119 /// caller to cast `b` as `i32`. |
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120 fn mod_compare(a: i32, b: i32) -> bool { |
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121 a & i32::max_value() != b & i32::max_value() |
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122 } |
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123 |
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124 /// Return a sorted list containing information about the entries |
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125 /// in the directory. |
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126 /// |
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127 /// * `skip_dot_hg` - Return an empty vec if `path` contains a `.hg` directory |
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128 fn list_directory( |
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129 path: impl AsRef<Path>, |
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130 skip_dot_hg: bool, |
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131 ) -> std::io::Result<Vec<(HgPathBuf, DirEntry)>> { |
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132 let mut results = vec![]; |
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133 let entries = read_dir(path.as_ref())?; |
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134 |
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135 for entry in entries { |
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136 let entry = entry?; |
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137 let filename = os_string_to_hg_path_buf(entry.file_name())?; |
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138 let file_type = entry.file_type()?; |
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139 if skip_dot_hg && filename.as_bytes() == b".hg" && file_type.is_dir() { |
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140 return Ok(vec![]); |
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141 } else { |
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142 results.push((filename, entry)) |
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143 } |
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144 } |
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145 |
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146 results.sort_unstable_by_key(|e| e.0.clone()); |
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147 Ok(results) |
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148 } |
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149 |
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150 /// The file corresponding to the dirstate entry was found on the filesystem. |
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151 fn dispatch_found( |
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152 filename: impl AsRef<HgPath>, |
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153 entry: DirstateEntry, |
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154 metadata: HgMetadata, |
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155 copy_map: &CopyMap, |
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156 options: StatusOptions, |
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157 ) -> Dispatch { |
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158 let DirstateEntry { |
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159 state, |
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160 mode, |
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161 mtime, |
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162 size, |
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163 } = entry; |
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164 |
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165 let HgMetadata { |
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166 st_mode, |
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167 st_size, |
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168 st_mtime, |
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169 .. |
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170 } = metadata; |
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171 |
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172 match state { |
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173 EntryState::Normal => { |
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174 let size_changed = mod_compare(size, st_size as i32); |
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175 let mode_changed = |
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176 (mode ^ st_mode as i32) & 0o100 != 0o000 && options.check_exec; |
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177 let metadata_changed = size >= 0 && (size_changed || mode_changed); |
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178 let other_parent = size == SIZE_FROM_OTHER_PARENT; |
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179 |
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180 if metadata_changed |
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181 || other_parent |
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182 || copy_map.contains_key(filename.as_ref()) |
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183 { |
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184 if metadata.is_symlink() && size_changed { |
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185 // issue6456: Size returned may be longer due to encryption |
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186 // on EXT-4 fscrypt. TODO maybe only do it on EXT4? |
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187 Dispatch::Unsure |
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188 } else { |
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189 Dispatch::Modified |
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190 } |
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191 } else if mod_compare(mtime, st_mtime as i32) |
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192 || st_mtime == options.last_normal_time |
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193 { |
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194 // the file may have just been marked as normal and |
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195 // it may have changed in the same second without |
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196 // changing its size. This can happen if we quickly |
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197 // do multiple commits. Force lookup, so we don't |
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198 // miss such a racy file change. |
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199 Dispatch::Unsure |
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200 } else if options.list_clean { |
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201 Dispatch::Clean |
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202 } else { |
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203 Dispatch::None |
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204 } |
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205 } |
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206 EntryState::Merged => Dispatch::Modified, |
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207 EntryState::Added => Dispatch::Added, |
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208 EntryState::Removed => Dispatch::Removed, |
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209 EntryState::Unknown => Dispatch::Unknown, |
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210 } |
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211 } |
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212 |
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213 /// The file corresponding to this Dirstate entry is missing. |
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214 fn dispatch_missing(state: EntryState) -> Dispatch { |
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215 match state { |
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216 // File was removed from the filesystem during commands |
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217 EntryState::Normal | EntryState::Merged | EntryState::Added => { |
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218 Dispatch::Deleted |
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219 } |
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220 // File was removed, everything is normal |
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221 EntryState::Removed => Dispatch::Removed, |
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222 // File is unknown to Mercurial, everything is normal |
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223 EntryState::Unknown => Dispatch::Unknown, |
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224 } |
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225 } |
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226 |
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227 fn dispatch_os_error(e: &std::io::Error) -> Dispatch { |
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228 Dispatch::Bad(BadMatch::OsError( |
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229 e.raw_os_error().expect("expected real OS error"), |
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230 )) |
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231 } |
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232 |
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233 lazy_static! { |
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234 static ref DEFAULT_WORK: HashSet<&'static HgPath> = { |
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235 let mut h = HashSet::new(); |
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236 h.insert(HgPath::new(b"")); |
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237 h |
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238 }; |
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239 } |
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240 |
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241 #[derive(Debug, Copy, Clone)] |
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242 pub struct StatusOptions { |
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243 /// Remember the most recent modification timeslot for status, to make |
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244 /// sure we won't miss future size-preserving file content modifications |
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245 /// that happen within the same timeslot. |
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246 pub last_normal_time: i64, |
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247 /// Whether we are on a filesystem with UNIX-like exec flags |
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248 pub check_exec: bool, |
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249 pub list_clean: bool, |
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250 pub list_unknown: bool, |
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251 pub list_ignored: bool, |
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252 /// Whether to collect traversed dirs for applying a callback later. |
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253 /// Used by `hg purge` for example. |
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254 pub collect_traversed_dirs: bool, |
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255 } |
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256 |
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257 #[derive(Debug)] |
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258 pub struct DirstateStatus<'a> { |
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259 pub modified: Vec<HgPathCow<'a>>, |
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260 pub added: Vec<HgPathCow<'a>>, |
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261 pub removed: Vec<HgPathCow<'a>>, |
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262 pub deleted: Vec<HgPathCow<'a>>, |
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263 pub clean: Vec<HgPathCow<'a>>, |
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264 pub ignored: Vec<HgPathCow<'a>>, |
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265 pub unknown: Vec<HgPathCow<'a>>, |
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266 pub bad: Vec<(HgPathCow<'a>, BadMatch)>, |
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267 /// Only filled if `collect_traversed_dirs` is `true` |
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268 pub traversed: Vec<HgPathBuf>, |
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269 } |
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270 |
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271 #[derive(Debug, derive_more::From)] |
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272 pub enum StatusError { |
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273 /// Generic IO error |
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274 IO(std::io::Error), |
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275 /// An invalid path that cannot be represented in Mercurial was found |
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276 Path(HgPathError), |
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277 /// An invalid "ignore" pattern was found |
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278 Pattern(PatternError), |
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279 } |
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280 |
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281 pub type StatusResult<T> = Result<T, StatusError>; |
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282 |
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283 impl fmt::Display for StatusError { |
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284 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { |
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285 match self { |
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286 StatusError::IO(error) => error.fmt(f), |
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287 StatusError::Path(error) => error.fmt(f), |
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288 StatusError::Pattern(error) => error.fmt(f), |
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289 } |
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290 } |
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291 } |
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292 |
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293 /// Gives information about which files are changed in the working directory |
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294 /// and how, compared to the revision we're based on |
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295 pub struct Status<'a, M: Matcher + Sync> { |
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296 dmap: &'a DirstateMap, |
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297 pub(crate) matcher: &'a M, |
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298 root_dir: PathBuf, |
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299 pub(crate) options: StatusOptions, |
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300 ignore_fn: IgnoreFnType<'a>, |
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301 } |
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302 |
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303 impl<'a, M> Status<'a, M> |
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304 where |
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305 M: Matcher + Sync, |
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306 { |
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307 pub fn new( |
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308 dmap: &'a DirstateMap, |
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309 matcher: &'a M, |
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310 root_dir: PathBuf, |
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311 ignore_files: Vec<PathBuf>, |
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312 options: StatusOptions, |
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313 ) -> StatusResult<(Self, Vec<PatternFileWarning>)> { |
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314 // Needs to outlive `dir_ignore_fn` since it's captured. |
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315 |
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316 let (ignore_fn, warnings): (IgnoreFnType, _) = |
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317 if options.list_ignored || options.list_unknown { |
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318 get_ignore_function(ignore_files, &root_dir)? |
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319 } else { |
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320 (Box::new(|&_| true), vec![]) |
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321 }; |
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322 |
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323 Ok(( |
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324 Self { |
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325 dmap, |
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326 matcher, |
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327 root_dir, |
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328 options, |
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329 ignore_fn, |
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330 }, |
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331 warnings, |
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332 )) |
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333 } |
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334 |
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335 /// Is the path ignored? |
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336 pub fn is_ignored(&self, path: impl AsRef<HgPath>) -> bool { |
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337 (self.ignore_fn)(path.as_ref()) |
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338 } |
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339 |
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340 /// Is the path or one of its ancestors ignored? |
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341 pub fn dir_ignore(&self, dir: impl AsRef<HgPath>) -> bool { |
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342 // Only involve ignore mechanism if we're listing unknowns or ignored. |
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343 if self.options.list_ignored || self.options.list_unknown { |
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344 if self.is_ignored(&dir) { |
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345 true |
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346 } else { |
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347 for p in find_dirs(dir.as_ref()) { |
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348 if self.is_ignored(p) { |
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349 return true; |
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350 } |
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351 } |
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352 false |
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353 } |
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354 } else { |
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355 true |
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356 } |
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357 } |
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358 |
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359 /// Get stat data about the files explicitly specified by the matcher. |
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360 /// Returns a tuple of the directories that need to be traversed and the |
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361 /// files with their corresponding `Dispatch`. |
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362 /// TODO subrepos |
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363 #[timed] |
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364 pub fn walk_explicit( |
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365 &self, |
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366 traversed_sender: crossbeam_channel::Sender<HgPathBuf>, |
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367 ) -> (Vec<DispatchedPath<'a>>, Vec<DispatchedPath<'a>>) { |
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368 self.matcher |
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369 .file_set() |
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370 .unwrap_or(&DEFAULT_WORK) |
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371 .par_iter() |
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372 .flat_map(|&filename| -> Option<_> { |
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373 // TODO normalization |
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374 let normalized = filename; |
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375 |
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376 let buf = match hg_path_to_path_buf(normalized) { |
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377 Ok(x) => x, |
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378 Err(_) => { |
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379 return Some(( |
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380 Cow::Borrowed(normalized), |
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381 INVALID_PATH_DISPATCH, |
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382 )) |
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383 } |
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384 }; |
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385 let target = self.root_dir.join(buf); |
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386 let st = target.symlink_metadata(); |
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387 let in_dmap = self.dmap.get(normalized); |
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388 match st { |
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389 Ok(meta) => { |
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390 let file_type = meta.file_type(); |
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391 return if file_type.is_file() || file_type.is_symlink() |
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392 { |
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393 if let Some(entry) = in_dmap { |
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394 return Some(( |
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395 Cow::Borrowed(normalized), |
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396 dispatch_found( |
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397 &normalized, |
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398 *entry, |
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399 HgMetadata::from_metadata(meta), |
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400 &self.dmap.copy_map, |
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401 self.options, |
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402 ), |
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403 )); |
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404 } |
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405 Some(( |
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406 Cow::Borrowed(normalized), |
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407 Dispatch::Unknown, |
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408 )) |
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409 } else if file_type.is_dir() { |
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410 if self.options.collect_traversed_dirs { |
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411 traversed_sender |
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412 .send(normalized.to_owned()) |
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413 .expect("receiver should outlive sender"); |
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414 } |
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415 Some(( |
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416 Cow::Borrowed(normalized), |
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417 Dispatch::Directory { |
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418 was_file: in_dmap.is_some(), |
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419 }, |
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420 )) |
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421 } else { |
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422 Some(( |
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423 Cow::Borrowed(normalized), |
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424 Dispatch::Bad(BadMatch::BadType( |
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425 // TODO do more than unknown |
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426 // Support for all `BadType` variant |
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427 // varies greatly between platforms. |
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428 // So far, no tests check the type and |
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429 // this should be good enough for most |
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430 // users. |
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431 BadType::Unknown, |
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432 )), |
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433 )) |
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434 }; |
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435 } |
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436 Err(_) => { |
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437 if let Some(entry) = in_dmap { |
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438 return Some(( |
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439 Cow::Borrowed(normalized), |
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440 dispatch_missing(entry.state), |
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441 )); |
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442 } |
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443 } |
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444 }; |
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445 None |
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446 }) |
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447 .partition(|(_, dispatch)| match dispatch { |
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448 Dispatch::Directory { .. } => true, |
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449 _ => false, |
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450 }) |
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451 } |
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452 |
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453 /// Walk the working directory recursively to look for changes compared to |
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454 /// the current `DirstateMap`. |
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455 /// |
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456 /// This takes a mutable reference to the results to account for the |
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457 /// `extend` in timings |
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458 #[timed] |
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459 pub fn traverse( |
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460 &self, |
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461 path: impl AsRef<HgPath>, |
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462 old_results: &FastHashMap<HgPathCow<'a>, Dispatch>, |
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463 results: &mut Vec<DispatchedPath<'a>>, |
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464 traversed_sender: crossbeam_channel::Sender<HgPathBuf>, |
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465 ) { |
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466 // The traversal is done in parallel, so use a channel to gather |
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467 // entries. `crossbeam_channel::Sender` is `Sync`, while `mpsc::Sender` |
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468 // is not. |
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469 let (files_transmitter, files_receiver) = |
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470 crossbeam_channel::unbounded(); |
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471 |
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472 self.traverse_dir( |
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473 &files_transmitter, |
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474 path, |
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475 &old_results, |
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476 traversed_sender, |
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477 ); |
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478 |
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479 // Disconnect the channel so the receiver stops waiting |
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480 drop(files_transmitter); |
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481 |
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482 let new_results = files_receiver |
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483 .into_iter() |
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484 .par_bridge() |
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485 .map(|(f, d)| (Cow::Owned(f), d)); |
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486 |
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487 results.par_extend(new_results); |
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488 } |
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489 |
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490 /// Dispatch a single entry (file, folder, symlink...) found during |
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491 /// `traverse`. If the entry is a folder that needs to be traversed, it |
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492 /// will be handled in a separate thread. |
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493 fn handle_traversed_entry<'b>( |
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494 &'a self, |
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495 scope: &rayon::Scope<'b>, |
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496 files_sender: &'b crossbeam_channel::Sender<(HgPathBuf, Dispatch)>, |
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497 old_results: &'a FastHashMap<Cow<HgPath>, Dispatch>, |
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498 filename: HgPathBuf, |
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499 dir_entry: DirEntry, |
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500 traversed_sender: crossbeam_channel::Sender<HgPathBuf>, |
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501 ) -> IoResult<()> |
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502 where |
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503 'a: 'b, |
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504 { |
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505 let file_type = dir_entry.file_type()?; |
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506 let entry_option = self.dmap.get(&filename); |
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507 |
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508 if filename.as_bytes() == b".hg" { |
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509 // Could be a directory or a symlink |
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510 return Ok(()); |
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511 } |
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512 |
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513 if file_type.is_dir() { |
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514 self.handle_traversed_dir( |
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515 scope, |
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516 files_sender, |
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517 old_results, |
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518 entry_option, |
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519 filename, |
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520 traversed_sender, |
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521 ); |
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522 } else if file_type.is_file() || file_type.is_symlink() { |
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523 if let Some(entry) = entry_option { |
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524 if self.matcher.matches_everything() |
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525 || self.matcher.matches(&filename) |
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526 { |
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527 let metadata = dir_entry.metadata()?; |
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528 files_sender |
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529 .send(( |
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530 filename.to_owned(), |
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531 dispatch_found( |
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532 &filename, |
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533 *entry, |
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534 HgMetadata::from_metadata(metadata), |
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535 &self.dmap.copy_map, |
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536 self.options, |
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537 ), |
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538 )) |
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539 .unwrap(); |
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540 } |
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541 } else if (self.matcher.matches_everything() |
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542 || self.matcher.matches(&filename)) |
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543 && !self.is_ignored(&filename) |
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544 { |
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545 if (self.options.list_ignored |
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546 || self.matcher.exact_match(&filename)) |
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547 && self.dir_ignore(&filename) |
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548 { |
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549 if self.options.list_ignored { |
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550 files_sender |
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551 .send((filename.to_owned(), Dispatch::Ignored)) |
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552 .unwrap(); |
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553 } |
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554 } else if self.options.list_unknown { |
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555 files_sender |
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556 .send((filename.to_owned(), Dispatch::Unknown)) |
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557 .unwrap(); |
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558 } |
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559 } else if self.is_ignored(&filename) && self.options.list_ignored { |
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560 files_sender |
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561 .send((filename.to_owned(), Dispatch::Ignored)) |
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562 .unwrap(); |
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563 } |
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564 } else if let Some(entry) = entry_option { |
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565 // Used to be a file or a folder, now something else. |
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566 if self.matcher.matches_everything() |
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567 || self.matcher.matches(&filename) |
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568 { |
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569 files_sender |
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570 .send((filename.to_owned(), dispatch_missing(entry.state))) |
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571 .unwrap(); |
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572 } |
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573 } |
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574 |
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575 Ok(()) |
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576 } |
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577 |
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578 /// A directory was found in the filesystem and needs to be traversed |
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579 fn handle_traversed_dir<'b>( |
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580 &'a self, |
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581 scope: &rayon::Scope<'b>, |
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582 files_sender: &'b crossbeam_channel::Sender<(HgPathBuf, Dispatch)>, |
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583 old_results: &'a FastHashMap<Cow<HgPath>, Dispatch>, |
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584 entry_option: Option<&'a DirstateEntry>, |
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585 directory: HgPathBuf, |
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586 traversed_sender: crossbeam_channel::Sender<HgPathBuf>, |
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587 ) where |
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588 'a: 'b, |
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589 { |
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590 scope.spawn(move |_| { |
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591 // Nested `if` until `rust-lang/rust#53668` is stable |
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592 if let Some(entry) = entry_option { |
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593 // Used to be a file, is now a folder |
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594 if self.matcher.matches_everything() |
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595 || self.matcher.matches(&directory) |
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596 { |
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597 files_sender |
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598 .send(( |
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599 directory.to_owned(), |
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600 dispatch_missing(entry.state), |
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601 )) |
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602 .unwrap(); |
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603 } |
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604 } |
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605 // Do we need to traverse it? |
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606 if !self.is_ignored(&directory) || self.options.list_ignored { |
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607 self.traverse_dir( |
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608 files_sender, |
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609 directory, |
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610 &old_results, |
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611 traversed_sender, |
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612 ) |
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613 } |
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614 }); |
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615 } |
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616 |
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617 /// Decides whether the directory needs to be listed, and if so handles the |
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618 /// entries in a separate thread. |
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619 fn traverse_dir( |
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620 &self, |
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621 files_sender: &crossbeam_channel::Sender<(HgPathBuf, Dispatch)>, |
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622 directory: impl AsRef<HgPath>, |
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623 old_results: &FastHashMap<Cow<HgPath>, Dispatch>, |
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624 traversed_sender: crossbeam_channel::Sender<HgPathBuf>, |
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625 ) { |
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626 let directory = directory.as_ref(); |
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627 |
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628 if self.options.collect_traversed_dirs { |
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629 traversed_sender |
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630 .send(directory.to_owned()) |
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631 .expect("receiver should outlive sender"); |
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632 } |
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633 |
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634 let visit_entries = match self.matcher.visit_children_set(directory) { |
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635 VisitChildrenSet::Empty => return, |
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636 VisitChildrenSet::This | VisitChildrenSet::Recursive => None, |
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637 VisitChildrenSet::Set(set) => Some(set), |
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638 }; |
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639 let buf = match hg_path_to_path_buf(directory) { |
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640 Ok(b) => b, |
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641 Err(_) => { |
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642 files_sender |
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643 .send((directory.to_owned(), INVALID_PATH_DISPATCH)) |
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644 .expect("receiver should outlive sender"); |
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645 return; |
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646 } |
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647 }; |
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648 let dir_path = self.root_dir.join(buf); |
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649 |
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650 let skip_dot_hg = !directory.as_bytes().is_empty(); |
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651 let entries = match list_directory(dir_path, skip_dot_hg) { |
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652 Err(e) => { |
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653 files_sender |
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654 .send((directory.to_owned(), dispatch_os_error(&e))) |
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655 .expect("receiver should outlive sender"); |
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656 return; |
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657 } |
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658 Ok(entries) => entries, |
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659 }; |
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660 |
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661 rayon::scope(|scope| { |
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662 for (filename, dir_entry) in entries { |
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663 if let Some(ref set) = visit_entries { |
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664 if !set.contains(filename.deref()) { |
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665 continue; |
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666 } |
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667 } |
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668 // TODO normalize |
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669 let filename = if directory.is_empty() { |
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670 filename.to_owned() |
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671 } else { |
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672 directory.join(&filename) |
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673 }; |
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674 |
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675 if !old_results.contains_key(filename.deref()) { |
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676 match self.handle_traversed_entry( |
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677 scope, |
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678 files_sender, |
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679 old_results, |
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680 filename, |
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681 dir_entry, |
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682 traversed_sender.clone(), |
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683 ) { |
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684 Err(e) => { |
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685 files_sender |
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686 .send(( |
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687 directory.to_owned(), |
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688 dispatch_os_error(&e), |
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689 )) |
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690 .expect("receiver should outlive sender"); |
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691 } |
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692 Ok(_) => {} |
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693 } |
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694 } |
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695 } |
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696 }) |
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697 } |
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698 |
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699 /// Add the files in the dirstate to the results. |
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700 /// |
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701 /// This takes a mutable reference to the results to account for the |
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702 /// `extend` in timings |
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703 #[timed] |
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704 pub fn extend_from_dmap(&self, results: &mut Vec<DispatchedPath<'a>>) { |
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705 results.par_extend( |
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706 self.dmap |
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707 .par_iter() |
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708 .filter(|(path, _)| self.matcher.matches(path)) |
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709 .map(move |(filename, entry)| { |
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710 let filename: &HgPath = filename; |
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711 let filename_as_path = match hg_path_to_path_buf(filename) |
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712 { |
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713 Ok(f) => f, |
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714 Err(_) => { |
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715 return ( |
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716 Cow::Borrowed(filename), |
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717 INVALID_PATH_DISPATCH, |
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718 ) |
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719 } |
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720 }; |
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721 let meta = self |
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722 .root_dir |
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723 .join(filename_as_path) |
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724 .symlink_metadata(); |
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725 match meta { |
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726 Ok(m) |
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727 if !(m.file_type().is_file() |
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728 || m.file_type().is_symlink()) => |
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729 { |
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730 ( |
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731 Cow::Borrowed(filename), |
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732 dispatch_missing(entry.state), |
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733 ) |
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734 } |
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735 Ok(m) => ( |
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736 Cow::Borrowed(filename), |
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737 dispatch_found( |
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738 filename, |
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739 *entry, |
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740 HgMetadata::from_metadata(m), |
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741 &self.dmap.copy_map, |
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742 self.options, |
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743 ), |
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744 ), |
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745 Err(e) |
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746 if e.kind() == ErrorKind::NotFound |
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747 || e.raw_os_error() == Some(20) => |
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748 { |
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749 // Rust does not yet have an `ErrorKind` for |
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750 // `NotADirectory` (errno 20) |
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751 // It happens if the dirstate contains `foo/bar` |
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752 // and foo is not a |
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753 // directory |
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754 ( |
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755 Cow::Borrowed(filename), |
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756 dispatch_missing(entry.state), |
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757 ) |
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758 } |
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759 Err(e) => { |
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760 (Cow::Borrowed(filename), dispatch_os_error(&e)) |
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761 } |
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762 } |
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763 }), |
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764 ); |
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765 } |
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766 |
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767 /// Checks all files that are in the dirstate but were not found during the |
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768 /// working directory traversal. This means that the rest must |
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769 /// be either ignored, under a symlink or under a new nested repo. |
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770 /// |
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771 /// This takes a mutable reference to the results to account for the |
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772 /// `extend` in timings |
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773 #[timed] |
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774 pub fn handle_unknowns(&self, results: &mut Vec<DispatchedPath<'a>>) { |
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775 let to_visit: Vec<(&HgPath, &DirstateEntry)> = |
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776 if results.is_empty() && self.matcher.matches_everything() { |
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777 self.dmap.iter().map(|(f, e)| (f.deref(), e)).collect() |
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778 } else { |
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779 // Only convert to a hashmap if needed. |
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780 let old_results: FastHashMap<_, _> = |
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781 results.iter().cloned().collect(); |
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782 self.dmap |
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783 .iter() |
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784 .filter_map(move |(f, e)| { |
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785 if !old_results.contains_key(f.deref()) |
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786 && self.matcher.matches(f) |
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787 { |
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788 Some((f.deref(), e)) |
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789 } else { |
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790 None |
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791 } |
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792 }) |
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793 .collect() |
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794 }; |
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795 |
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796 let path_auditor = PathAuditor::new(&self.root_dir); |
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797 |
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798 let new_results = to_visit.into_par_iter().filter_map( |
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799 |(filename, entry)| -> Option<_> { |
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800 // Report ignored items in the dmap as long as they are not |
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801 // under a symlink directory. |
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802 if path_auditor.check(filename) { |
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803 // TODO normalize for case-insensitive filesystems |
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804 let buf = match hg_path_to_path_buf(filename) { |
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805 Ok(x) => x, |
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806 Err(_) => { |
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807 return Some(( |
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808 Cow::Owned(filename.to_owned()), |
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809 INVALID_PATH_DISPATCH, |
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810 )); |
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811 } |
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812 }; |
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813 Some(( |
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814 Cow::Owned(filename.to_owned()), |
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815 match self.root_dir.join(&buf).symlink_metadata() { |
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816 // File was just ignored, no links, and exists |
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817 Ok(meta) => { |
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818 let metadata = HgMetadata::from_metadata(meta); |
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819 dispatch_found( |
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820 filename, |
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821 *entry, |
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822 metadata, |
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823 &self.dmap.copy_map, |
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824 self.options, |
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825 ) |
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826 } |
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827 // File doesn't exist |
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828 Err(_) => dispatch_missing(entry.state), |
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829 }, |
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830 )) |
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831 } else { |
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832 // It's either missing or under a symlink directory which |
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833 // we, in this case, report as missing. |
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834 Some(( |
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835 Cow::Owned(filename.to_owned()), |
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836 dispatch_missing(entry.state), |
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837 )) |
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838 } |
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839 }, |
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840 ); |
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841 |
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842 results.par_extend(new_results); |
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843 } |
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844 } |
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845 |
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846 #[timed] |
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847 pub fn build_response<'a>( |
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848 results: impl IntoIterator<Item = DispatchedPath<'a>>, |
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849 traversed: Vec<HgPathBuf>, |
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850 ) -> (Vec<HgPathCow<'a>>, DirstateStatus<'a>) { |
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851 let mut lookup = vec![]; |
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852 let mut modified = vec![]; |
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853 let mut added = vec![]; |
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854 let mut removed = vec![]; |
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855 let mut deleted = vec![]; |
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856 let mut clean = vec![]; |
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857 let mut ignored = vec![]; |
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858 let mut unknown = vec![]; |
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859 let mut bad = vec![]; |
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860 |
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861 for (filename, dispatch) in results.into_iter() { |
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862 match dispatch { |
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863 Dispatch::Unknown => unknown.push(filename), |
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864 Dispatch::Unsure => lookup.push(filename), |
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865 Dispatch::Modified => modified.push(filename), |
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866 Dispatch::Added => added.push(filename), |
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867 Dispatch::Removed => removed.push(filename), |
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868 Dispatch::Deleted => deleted.push(filename), |
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869 Dispatch::Clean => clean.push(filename), |
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870 Dispatch::Ignored => ignored.push(filename), |
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871 Dispatch::None => {} |
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872 Dispatch::Bad(reason) => bad.push((filename, reason)), |
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873 Dispatch::Directory { .. } => {} |
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874 } |
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875 } |
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876 |
44528
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877 ( |
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878 lookup, |
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879 DirstateStatus { |
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880 modified, |
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881 added, |
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882 removed, |
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883 deleted, |
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884 clean, |
44526
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885 ignored, |
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886 unknown, |
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887 bad, |
44838
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888 traversed, |
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889 }, |
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890 ) |
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891 } |
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892 |
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893 /// Get the status of files in the working directory. |
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894 /// |
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895 /// This is the current entry-point for `hg-core` and is realistically unusable |
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896 /// outside of a Python context because its arguments need to provide a lot of |
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897 /// information that will not be necessary in the future. |
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898 #[timed] |
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899 pub fn status<'a>( |
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900 dmap: &'a DirstateMap, |
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901 matcher: &'a (impl Matcher + Sync), |
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902 root_dir: PathBuf, |
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903 ignore_files: Vec<PathBuf>, |
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904 options: StatusOptions, |
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905 ) -> StatusResult<( |
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906 (Vec<HgPathCow<'a>>, DirstateStatus<'a>), |
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907 Vec<PatternFileWarning>, |
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908 )> { |
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909 let (status, warnings) = |
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910 Status::new(dmap, matcher, root_dir, ignore_files, options)?; |
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911 |
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912 Ok((status.run()?, warnings)) |
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913 } |