Mercurial > hg
annotate rust/hg-core/src/operations/list_tracked_files.rs @ 46134:cc6faec62cb7
rust: change &PathBuf parameters to &Path
This is just as useful in function bodies, and a less strict requirement for callers.
Differential Revision: https://phab.mercurial-scm.org/D9594
author | Simon Sapin <simon.sapin@octobus.net> |
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date | Mon, 14 Dec 2020 13:47:44 +0100 |
parents | 88e741bf2d93 |
children | dca9cb99971c |
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1 // list_tracked_files.rs |
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2 // |
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3 // Copyright 2020 Antoine Cezar <antoine.cezar@octobus.net> |
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4 // |
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5 // This software may be used and distributed according to the terms of the |
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6 // GNU General Public License version 2 or any later version. |
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7 |
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8 use crate::dirstate::parsers::parse_dirstate; |
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9 use crate::revlog::changelog::Changelog; |
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10 use crate::revlog::manifest::{Manifest, ManifestEntry}; |
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11 use crate::revlog::node::{Node, NodePrefix}; |
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12 use crate::revlog::revlog::RevlogError; |
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13 use crate::revlog::Revision; |
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14 use crate::utils::hg_path::HgPath; |
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15 use crate::{DirstateParseError, EntryState}; |
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16 use rayon::prelude::*; |
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17 use std::convert::From; |
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18 use std::fs; |
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19 use std::path::Path; |
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20 |
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21 /// Kind of error encountered by `ListDirstateTrackedFiles` |
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22 #[derive(Debug)] |
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23 pub enum ListDirstateTrackedFilesErrorKind { |
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24 /// Error when reading the `dirstate` file |
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25 IoError(std::io::Error), |
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26 /// Error when parsing the `dirstate` file |
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27 ParseError(DirstateParseError), |
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28 } |
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29 |
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30 /// A `ListDirstateTrackedFiles` error |
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31 #[derive(Debug)] |
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32 pub struct ListDirstateTrackedFilesError { |
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33 /// Kind of error encountered by `ListDirstateTrackedFiles` |
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34 pub kind: ListDirstateTrackedFilesErrorKind, |
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35 } |
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36 |
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37 impl From<ListDirstateTrackedFilesErrorKind> |
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38 for ListDirstateTrackedFilesError |
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39 { |
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40 fn from(kind: ListDirstateTrackedFilesErrorKind) -> Self { |
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41 ListDirstateTrackedFilesError { kind } |
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42 } |
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43 } |
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44 |
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45 impl From<std::io::Error> for ListDirstateTrackedFilesError { |
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46 fn from(err: std::io::Error) -> Self { |
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47 let kind = ListDirstateTrackedFilesErrorKind::IoError(err); |
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48 ListDirstateTrackedFilesError { kind } |
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49 } |
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50 } |
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51 |
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52 /// List files under Mercurial control in the working directory |
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53 /// by reading the dirstate |
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54 pub struct ListDirstateTrackedFiles { |
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55 /// The `dirstate` content. |
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56 content: Vec<u8>, |
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57 } |
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58 |
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59 impl ListDirstateTrackedFiles { |
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60 pub fn new(root: &Path) -> Result<Self, ListDirstateTrackedFilesError> { |
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61 let dirstate = root.join(".hg/dirstate"); |
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62 let content = fs::read(&dirstate)?; |
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63 Ok(Self { content }) |
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64 } |
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65 |
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66 pub fn run( |
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67 &mut self, |
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68 ) -> Result<Vec<&HgPath>, ListDirstateTrackedFilesError> { |
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69 let (_, entries, _) = parse_dirstate(&self.content) |
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70 .map_err(ListDirstateTrackedFilesErrorKind::ParseError)?; |
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71 let mut files: Vec<&HgPath> = entries |
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72 .into_iter() |
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73 .filter_map(|(path, entry)| match entry.state { |
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74 EntryState::Removed => None, |
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75 _ => Some(path), |
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76 }) |
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77 .collect(); |
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78 files.par_sort_unstable(); |
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79 Ok(files) |
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80 } |
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81 } |
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82 |
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83 /// Kind of error encountered by `ListRevTrackedFiles` |
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84 #[derive(Debug)] |
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85 pub enum ListRevTrackedFilesErrorKind { |
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86 /// Error when reading a `revlog` file. |
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87 IoError(std::io::Error), |
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88 /// The revision has not been found. |
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89 InvalidRevision, |
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90 /// Found more than one revision whose ID match the requested prefix |
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91 AmbiguousPrefix, |
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92 /// A `revlog` file is corrupted. |
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93 CorruptedRevlog, |
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94 /// The `revlog` format version is not supported. |
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95 UnsuportedRevlogVersion(u16), |
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96 /// The `revlog` data format is not supported. |
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97 UnknowRevlogDataFormat(u8), |
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98 } |
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99 |
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100 /// A `ListRevTrackedFiles` error |
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101 #[derive(Debug)] |
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102 pub struct ListRevTrackedFilesError { |
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103 /// Kind of error encountered by `ListRevTrackedFiles` |
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104 pub kind: ListRevTrackedFilesErrorKind, |
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105 } |
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106 |
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107 impl From<ListRevTrackedFilesErrorKind> for ListRevTrackedFilesError { |
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108 fn from(kind: ListRevTrackedFilesErrorKind) -> Self { |
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109 ListRevTrackedFilesError { kind } |
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110 } |
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111 } |
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112 |
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113 impl From<RevlogError> for ListRevTrackedFilesError { |
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114 fn from(err: RevlogError) -> Self { |
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115 match err { |
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116 RevlogError::IoError(err) => { |
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117 ListRevTrackedFilesErrorKind::IoError(err) |
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118 } |
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119 RevlogError::UnsuportedVersion(version) => { |
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120 ListRevTrackedFilesErrorKind::UnsuportedRevlogVersion(version) |
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121 } |
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122 RevlogError::InvalidRevision => { |
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123 ListRevTrackedFilesErrorKind::InvalidRevision |
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124 } |
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125 RevlogError::AmbiguousPrefix => { |
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126 ListRevTrackedFilesErrorKind::AmbiguousPrefix |
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127 } |
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128 RevlogError::Corrupted => { |
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129 ListRevTrackedFilesErrorKind::CorruptedRevlog |
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130 } |
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131 RevlogError::UnknowDataFormat(format) => { |
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132 ListRevTrackedFilesErrorKind::UnknowRevlogDataFormat(format) |
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133 } |
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134 } |
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135 .into() |
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136 } |
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137 } |
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138 |
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139 /// List files under Mercurial control at a given revision. |
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140 pub struct ListRevTrackedFiles<'a> { |
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141 /// The revision to list the files from. |
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142 rev: &'a str, |
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143 /// The changelog file |
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144 changelog: Changelog, |
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145 /// The manifest file |
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146 manifest: Manifest, |
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147 /// The manifest entry corresponding to the revision. |
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148 /// |
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149 /// Used to hold the owner of the returned references. |
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150 manifest_entry: Option<ManifestEntry>, |
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151 } |
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152 |
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153 impl<'a> ListRevTrackedFiles<'a> { |
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154 pub fn new( |
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155 root: &Path, |
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156 rev: &'a str, |
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157 ) -> Result<Self, ListRevTrackedFilesError> { |
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158 let changelog = Changelog::open(root)?; |
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159 let manifest = Manifest::open(root)?; |
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160 |
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161 Ok(Self { |
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162 rev, |
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163 changelog, |
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164 manifest, |
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165 manifest_entry: None, |
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166 }) |
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167 } |
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168 |
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169 pub fn run( |
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170 &mut self, |
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171 ) -> Result<impl Iterator<Item = &HgPath>, ListRevTrackedFilesError> { |
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172 let changelog_entry = match self.rev.parse::<Revision>() { |
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173 Ok(rev) => self.changelog.get_rev(rev)?, |
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174 _ => { |
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175 let changelog_node = NodePrefix::from_hex(&self.rev) |
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176 .or(Err(ListRevTrackedFilesErrorKind::InvalidRevision))?; |
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177 self.changelog.get_node(changelog_node.borrow())? |
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178 } |
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179 }; |
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180 let manifest_node = Node::from_hex(&changelog_entry.manifest_node()?) |
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181 .or(Err(ListRevTrackedFilesErrorKind::CorruptedRevlog))?; |
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182 |
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183 self.manifest_entry = |
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184 Some(self.manifest.get_node((&manifest_node).into())?); |
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185 |
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186 if let Some(ref manifest_entry) = self.manifest_entry { |
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187 Ok(manifest_entry.files()) |
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188 } else { |
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189 panic!( |
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190 "manifest entry should have been stored in self.manifest_node to ensure its lifetime since references are returned from it" |
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191 ) |
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192 } |
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193 } |
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194 } |