author | Antoine cezar<acezar@chwitlabs.fr> |
Mon, 28 Sep 2020 16:52:35 +0200 | |
changeset 45603 | be951ca95b08 |
parent 45536 | 639f33f22faf |
child 46032 | 8d6164098782 |
permissions | -rw-r--r-- |
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// list_tracked_files.rs |
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// |
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// Copyright 2020 Antoine Cezar <antoine.cezar@octobus.net> |
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// |
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// This software may be used and distributed according to the terms of the |
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// GNU General Public License version 2 or any later version. |
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|
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use crate::dirstate::parsers::parse_dirstate; |
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use crate::revlog::changelog::Changelog; |
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use crate::revlog::manifest::{Manifest, ManifestEntry}; |
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use crate::revlog::revlog::RevlogError; |
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use crate::revlog::Revision; |
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use crate::utils::hg_path::HgPath; |
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use crate::{DirstateParseError, EntryState}; |
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use rayon::prelude::*; |
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use std::convert::From; |
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use std::fs; |
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use std::path::PathBuf; |
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/// Kind of error encountered by `ListDirstateTrackedFiles` |
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#[derive(Debug)] |
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pub enum ListDirstateTrackedFilesErrorKind { |
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/// Error when reading the `dirstate` file |
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IoError(std::io::Error), |
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/// Error when parsing the `dirstate` file |
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ParseError(DirstateParseError), |
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} |
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/// A `ListDirstateTrackedFiles` error |
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#[derive(Debug)] |
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pub struct ListDirstateTrackedFilesError { |
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/// Kind of error encountered by `ListDirstateTrackedFiles` |
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pub kind: ListDirstateTrackedFilesErrorKind, |
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} |
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impl From<ListDirstateTrackedFilesErrorKind> |
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for ListDirstateTrackedFilesError |
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{ |
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fn from(kind: ListDirstateTrackedFilesErrorKind) -> Self { |
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ListDirstateTrackedFilesError { kind } |
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} |
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} |
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impl From<std::io::Error> for ListDirstateTrackedFilesError { |
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fn from(err: std::io::Error) -> Self { |
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let kind = ListDirstateTrackedFilesErrorKind::IoError(err); |
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ListDirstateTrackedFilesError { kind } |
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} |
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} |
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/// List files under Mercurial control in the working directory |
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/// by reading the dirstate |
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pub struct ListDirstateTrackedFiles { |
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/// The `dirstate` content. |
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content: Vec<u8>, |
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} |
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impl ListDirstateTrackedFiles { |
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pub fn new(root: &PathBuf) -> Result<Self, ListDirstateTrackedFilesError> { |
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let dirstate = root.join(".hg/dirstate"); |
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let content = fs::read(&dirstate)?; |
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Ok(Self { content }) |
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} |
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pub fn run( |
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&mut self, |
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) -> Result<Vec<&HgPath>, ListDirstateTrackedFilesError> { |
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let (_, entries, _) = parse_dirstate(&self.content) |
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.map_err(ListDirstateTrackedFilesErrorKind::ParseError)?; |
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let mut files: Vec<&HgPath> = entries |
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.into_iter() |
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.filter_map(|(path, entry)| match entry.state { |
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EntryState::Removed => None, |
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_ => Some(path), |
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}) |
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.collect(); |
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files.par_sort_unstable(); |
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Ok(files) |
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} |
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} |
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/// Kind of error encountered by `ListRevTrackedFiles` |
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#[derive(Debug)] |
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pub enum ListRevTrackedFilesErrorKind { |
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/// Error when reading a `revlog` file. |
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IoError(std::io::Error), |
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/// The revision has not been found. |
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InvalidRevision, |
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/// A `revlog` file is corrupted. |
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CorruptedRevlog, |
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/// The `revlog` format version is not supported. |
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UnsuportedRevlogVersion(u16), |
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/// The `revlog` data format is not supported. |
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UnknowRevlogDataFormat(u8), |
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} |
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/// A `ListRevTrackedFiles` error |
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#[derive(Debug)] |
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pub struct ListRevTrackedFilesError { |
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/// Kind of error encountered by `ListRevTrackedFiles` |
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pub kind: ListRevTrackedFilesErrorKind, |
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102 |
} |
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103 |
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104 |
impl From<ListRevTrackedFilesErrorKind> for ListRevTrackedFilesError { |
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105 |
fn from(kind: ListRevTrackedFilesErrorKind) -> Self { |
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106 |
ListRevTrackedFilesError { kind } |
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107 |
} |
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108 |
} |
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109 |
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110 |
impl From<RevlogError> for ListRevTrackedFilesError { |
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111 |
fn from(err: RevlogError) -> Self { |
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112 |
match err { |
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113 |
RevlogError::IoError(err) => { |
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114 |
ListRevTrackedFilesErrorKind::IoError(err) |
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115 |
} |
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116 |
RevlogError::UnsuportedVersion(version) => { |
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117 |
ListRevTrackedFilesErrorKind::UnsuportedRevlogVersion(version) |
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118 |
} |
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119 |
RevlogError::InvalidRevision => { |
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120 |
ListRevTrackedFilesErrorKind::InvalidRevision |
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121 |
} |
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122 |
RevlogError::Corrupted => { |
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123 |
ListRevTrackedFilesErrorKind::CorruptedRevlog |
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124 |
} |
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125 |
RevlogError::UnknowDataFormat(format) => { |
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126 |
ListRevTrackedFilesErrorKind::UnknowRevlogDataFormat(format) |
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127 |
} |
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128 |
} |
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129 |
.into() |
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130 |
} |
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131 |
} |
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132 |
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133 |
/// List files under Mercurial control at a given revision. |
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134 |
pub struct ListRevTrackedFiles<'a> { |
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135 |
/// The revision to list the files from. |
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136 |
rev: &'a str, |
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137 |
/// The changelog file |
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138 |
changelog: Changelog, |
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139 |
/// The manifest file |
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140 |
manifest: Manifest, |
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141 |
/// The manifest entry corresponding to the revision. |
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142 |
/// |
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143 |
/// Used to hold the owner of the returned references. |
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144 |
manifest_entry: Option<ManifestEntry>, |
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145 |
} |
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146 |
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147 |
impl<'a> ListRevTrackedFiles<'a> { |
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148 |
pub fn new( |
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149 |
root: &PathBuf, |
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150 |
rev: &'a str, |
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151 |
) -> Result<Self, ListRevTrackedFilesError> { |
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152 |
let changelog = Changelog::open(&root)?; |
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153 |
let manifest = Manifest::open(&root)?; |
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154 |
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155 |
Ok(Self { |
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156 |
rev, |
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157 |
changelog, |
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158 |
manifest, |
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159 |
manifest_entry: None, |
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160 |
}) |
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161 |
} |
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162 |
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163 |
pub fn run( |
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164 |
&mut self, |
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165 |
) -> Result<impl Iterator<Item = &HgPath>, ListRevTrackedFilesError> { |
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166 |
let changelog_entry = match self.rev.parse::<Revision>() { |
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167 |
Ok(rev) => self.changelog.get_rev(rev)?, |
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168 |
_ => { |
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169 |
let changelog_node = hex::decode(&self.rev) |
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170 |
.or(Err(ListRevTrackedFilesErrorKind::InvalidRevision))?; |
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171 |
self.changelog.get_node(&changelog_node)? |
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172 |
} |
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173 |
}; |
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174 |
let manifest_node = hex::decode(&changelog_entry.manifest_node()?) |
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175 |
.or(Err(ListRevTrackedFilesErrorKind::CorruptedRevlog))?; |
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176 |
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177 |
self.manifest_entry = Some(self.manifest.get_node(&manifest_node)?); |
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178 |
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179 |
if let Some(ref manifest_entry) = self.manifest_entry { |
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180 |
Ok(manifest_entry.files()) |
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181 |
} else { |
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182 |
panic!( |
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183 |
"manifest entry should have been stored in self.manifest_node to ensure its lifetime since references are returned from it" |
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184 |
) |
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185 |
} |
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186 |
} |
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187 |
} |