Mercurial > hg
annotate rust/hg-core/src/matchers.rs @ 48311:6d69e83e6b6e
rhg: more efficient `HgPath::join`
This commit makes `HgPath::join` slightly more efficient
by avoiding one copy.
It also avoids a particularly inefficient (quadratic) use of
`HgPath::join` by using a new mutating function `HgPathBuf::push` instead.
The name for `HgPathBuf::push` is chosen by analogy to `PathBuf::push`.
Differential Revision: https://phab.mercurial-scm.org/D11721
author | Arseniy Alekseyev <aalekseyev@janestreet.com> |
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date | Tue, 26 Oct 2021 19:47:30 +0100 |
parents | 0ef8231e413f |
children | 2009e3c64a53 |
rev | line source |
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1 // matchers.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 //! Structs and types for matching files and directories. |
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9 |
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10 use crate::{ |
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11 dirstate::dirs_multiset::DirsChildrenMultiset, |
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12 filepatterns::{ |
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13 build_single_regex, filter_subincludes, get_patterns_from_file, |
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14 PatternFileWarning, PatternResult, |
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15 }, |
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16 utils::{ |
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17 files::find_dirs, |
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18 hg_path::{HgPath, HgPathBuf}, |
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19 Escaped, |
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20 }, |
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21 DirsMultiset, DirstateMapError, FastHashMap, IgnorePattern, PatternError, |
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22 PatternSyntax, |
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23 }; |
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24 |
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25 use crate::filepatterns::normalize_path_bytes; |
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26 use std::borrow::ToOwned; |
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27 use std::collections::HashSet; |
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28 use std::fmt::{Display, Error, Formatter}; |
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29 use std::iter::FromIterator; |
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30 use std::ops::Deref; |
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31 use std::path::{Path, PathBuf}; |
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32 |
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33 use micro_timer::timed; |
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34 |
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35 #[derive(Debug, PartialEq)] |
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36 pub enum VisitChildrenSet<'a> { |
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37 /// Don't visit anything |
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38 Empty, |
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39 /// Only visit this directory |
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40 This, |
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41 /// Visit this directory and these subdirectories |
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42 /// TODO Should we implement a `NonEmptyHashSet`? |
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43 Set(HashSet<&'a HgPath>), |
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44 /// Visit this directory and all subdirectories |
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45 Recursive, |
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46 } |
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47 |
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48 pub trait Matcher { |
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49 /// Explicitly listed files |
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50 fn file_set(&self) -> Option<&HashSet<&HgPath>>; |
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51 /// Returns whether `filename` is in `file_set` |
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52 fn exact_match(&self, filename: &HgPath) -> bool; |
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53 /// Returns whether `filename` is matched by this matcher |
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54 fn matches(&self, filename: &HgPath) -> bool; |
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55 /// Decides whether a directory should be visited based on whether it |
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56 /// has potential matches in it or one of its subdirectories, and |
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57 /// potentially lists which subdirectories of that directory should be |
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58 /// visited. This is based on the match's primary, included, and excluded |
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59 /// patterns. |
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60 /// |
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61 /// # Example |
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62 /// |
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63 /// Assume matchers `['path:foo/bar', 'rootfilesin:qux']`, we would |
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64 /// return the following values (assuming the implementation of |
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65 /// visit_children_set is capable of recognizing this; some implementations |
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66 /// are not). |
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67 /// |
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68 /// ```text |
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69 /// ```ignore |
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70 /// '' -> {'foo', 'qux'} |
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71 /// 'baz' -> set() |
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72 /// 'foo' -> {'bar'} |
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73 /// // Ideally this would be `Recursive`, but since the prefix nature of |
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74 /// // matchers is applied to the entire matcher, we have to downgrade this |
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75 /// // to `This` due to the (yet to be implemented in Rust) non-prefix |
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76 /// // `RootFilesIn'-kind matcher being mixed in. |
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77 /// 'foo/bar' -> 'this' |
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78 /// 'qux' -> 'this' |
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79 /// ``` |
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80 /// # Important |
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81 /// |
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82 /// Most matchers do not know if they're representing files or |
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83 /// directories. They see `['path:dir/f']` and don't know whether `f` is a |
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84 /// file or a directory, so `visit_children_set('dir')` for most matchers |
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85 /// will return `HashSet{ HgPath { "f" } }`, but if the matcher knows it's |
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86 /// a file (like the yet to be implemented in Rust `ExactMatcher` does), |
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87 /// it may return `VisitChildrenSet::This`. |
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88 /// Do not rely on the return being a `HashSet` indicating that there are |
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89 /// no files in this dir to investigate (or equivalently that if there are |
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90 /// files to investigate in 'dir' that it will always return |
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91 /// `VisitChildrenSet::This`). |
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92 fn visit_children_set(&self, directory: &HgPath) -> VisitChildrenSet; |
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93 /// Matcher will match everything and `files_set()` will be empty: |
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94 /// optimization might be possible. |
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95 fn matches_everything(&self) -> bool; |
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96 /// Matcher will match exactly the files in `files_set()`: optimization |
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97 /// might be possible. |
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98 fn is_exact(&self) -> bool; |
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99 } |
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100 |
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101 /// Matches everything. |
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102 ///``` |
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103 /// use hg::{ matchers::{Matcher, AlwaysMatcher}, utils::hg_path::HgPath }; |
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104 /// |
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105 /// let matcher = AlwaysMatcher; |
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106 /// |
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107 /// assert_eq!(matcher.matches(HgPath::new(b"whatever")), true); |
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108 /// assert_eq!(matcher.matches(HgPath::new(b"b.txt")), true); |
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109 /// assert_eq!(matcher.matches(HgPath::new(b"main.c")), true); |
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110 /// assert_eq!(matcher.matches(HgPath::new(br"re:.*\.c$")), true); |
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111 /// ``` |
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112 #[derive(Debug)] |
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113 pub struct AlwaysMatcher; |
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114 |
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115 impl Matcher for AlwaysMatcher { |
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116 fn file_set(&self) -> Option<&HashSet<&HgPath>> { |
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117 None |
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118 } |
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119 fn exact_match(&self, _filename: &HgPath) -> bool { |
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120 false |
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121 } |
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122 fn matches(&self, _filename: &HgPath) -> bool { |
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123 true |
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124 } |
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125 fn visit_children_set(&self, _directory: &HgPath) -> VisitChildrenSet { |
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126 VisitChildrenSet::Recursive |
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127 } |
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128 fn matches_everything(&self) -> bool { |
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129 true |
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130 } |
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131 fn is_exact(&self) -> bool { |
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132 false |
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133 } |
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134 } |
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135 |
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136 /// Matches the input files exactly. They are interpreted as paths, not |
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137 /// patterns. |
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138 /// |
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139 ///``` |
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140 /// use hg::{ matchers::{Matcher, FileMatcher}, utils::hg_path::{HgPath, HgPathBuf} }; |
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141 /// |
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142 /// let files = [HgPathBuf::from_bytes(b"a.txt"), HgPathBuf::from_bytes(br"re:.*\.c$")]; |
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143 /// let matcher = FileMatcher::new(&files).unwrap(); |
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144 /// |
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145 /// assert_eq!(matcher.matches(HgPath::new(b"a.txt")), true); |
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146 /// assert_eq!(matcher.matches(HgPath::new(b"b.txt")), false); |
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147 /// assert_eq!(matcher.matches(HgPath::new(b"main.c")), false); |
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148 /// assert_eq!(matcher.matches(HgPath::new(br"re:.*\.c$")), true); |
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149 /// ``` |
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150 #[derive(Debug)] |
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151 pub struct FileMatcher<'a> { |
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152 files: HashSet<&'a HgPath>, |
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153 dirs: DirsMultiset, |
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154 } |
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155 |
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156 impl<'a> FileMatcher<'a> { |
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157 pub fn new(files: &'a [HgPathBuf]) -> Result<Self, DirstateMapError> { |
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158 Ok(Self { |
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159 files: HashSet::from_iter(files.iter().map(AsRef::as_ref)), |
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160 dirs: DirsMultiset::from_manifest(files)?, |
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161 }) |
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162 } |
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163 fn inner_matches(&self, filename: &HgPath) -> bool { |
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164 self.files.contains(filename.as_ref()) |
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165 } |
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166 } |
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167 |
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168 impl<'a> Matcher for FileMatcher<'a> { |
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169 fn file_set(&self) -> Option<&HashSet<&HgPath>> { |
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170 Some(&self.files) |
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171 } |
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172 fn exact_match(&self, filename: &HgPath) -> bool { |
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173 self.inner_matches(filename) |
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174 } |
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175 fn matches(&self, filename: &HgPath) -> bool { |
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176 self.inner_matches(filename) |
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177 } |
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178 fn visit_children_set(&self, directory: &HgPath) -> VisitChildrenSet { |
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179 if self.files.is_empty() || !self.dirs.contains(&directory) { |
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180 return VisitChildrenSet::Empty; |
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181 } |
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182 let dirs_as_set = self.dirs.iter().map(Deref::deref).collect(); |
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183 |
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184 let mut candidates: HashSet<&HgPath> = |
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185 self.files.union(&dirs_as_set).cloned().collect(); |
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186 candidates.remove(HgPath::new(b"")); |
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187 |
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188 if !directory.as_ref().is_empty() { |
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189 let directory = [directory.as_ref().as_bytes(), b"/"].concat(); |
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190 candidates = candidates |
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191 .iter() |
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192 .filter_map(|c| { |
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193 if c.as_bytes().starts_with(&directory) { |
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194 Some(HgPath::new(&c.as_bytes()[directory.len()..])) |
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195 } else { |
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196 None |
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197 } |
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198 }) |
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199 .collect(); |
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200 } |
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201 |
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202 // `self.dirs` includes all of the directories, recursively, so if |
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203 // we're attempting to match 'foo/bar/baz.txt', it'll have '', 'foo', |
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204 // 'foo/bar' in it. Thus we can safely ignore a candidate that has a |
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205 // '/' in it, indicating it's for a subdir-of-a-subdir; the immediate |
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206 // subdir will be in there without a slash. |
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207 VisitChildrenSet::Set( |
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208 candidates |
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209 .iter() |
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210 .filter_map(|c| { |
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211 if c.bytes().all(|b| *b != b'/') { |
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212 Some(*c) |
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213 } else { |
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214 None |
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215 } |
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216 }) |
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217 .collect(), |
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218 ) |
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219 } |
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220 fn matches_everything(&self) -> bool { |
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221 false |
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222 } |
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223 fn is_exact(&self) -> bool { |
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224 true |
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225 } |
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226 } |
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227 |
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228 /// Matches files that are included in the ignore rules. |
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229 /// ``` |
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230 /// use hg::{ |
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231 /// matchers::{IncludeMatcher, Matcher}, |
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232 /// IgnorePattern, |
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233 /// PatternSyntax, |
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234 /// utils::hg_path::HgPath |
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235 /// }; |
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236 /// use std::path::Path; |
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237 /// /// |
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238 /// let ignore_patterns = |
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239 /// vec![IgnorePattern::new(PatternSyntax::RootGlob, b"this*", Path::new(""))]; |
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240 /// let matcher = IncludeMatcher::new(ignore_patterns).unwrap(); |
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241 /// /// |
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242 /// assert_eq!(matcher.matches(HgPath::new(b"testing")), false); |
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243 /// assert_eq!(matcher.matches(HgPath::new(b"this should work")), true); |
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244 /// assert_eq!(matcher.matches(HgPath::new(b"this also")), true); |
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245 /// assert_eq!(matcher.matches(HgPath::new(b"but not this")), false); |
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246 /// ``` |
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247 pub struct IncludeMatcher<'a> { |
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248 patterns: Vec<u8>, |
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249 match_fn: Box<dyn for<'r> Fn(&'r HgPath) -> bool + 'a + Sync>, |
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250 /// Whether all the patterns match a prefix (i.e. recursively) |
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251 prefix: bool, |
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252 roots: HashSet<HgPathBuf>, |
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253 dirs: HashSet<HgPathBuf>, |
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254 parents: HashSet<HgPathBuf>, |
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255 } |
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256 |
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257 impl<'a> Matcher for IncludeMatcher<'a> { |
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258 fn file_set(&self) -> Option<&HashSet<&HgPath>> { |
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259 None |
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260 } |
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261 |
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262 fn exact_match(&self, _filename: &HgPath) -> bool { |
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263 false |
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264 } |
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265 |
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266 fn matches(&self, filename: &HgPath) -> bool { |
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267 (self.match_fn)(filename.as_ref()) |
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268 } |
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269 |
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270 fn visit_children_set(&self, directory: &HgPath) -> VisitChildrenSet { |
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271 let dir = directory.as_ref(); |
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272 if self.prefix && self.roots.contains(dir) { |
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273 return VisitChildrenSet::Recursive; |
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274 } |
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275 if self.roots.contains(HgPath::new(b"")) |
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276 || self.roots.contains(dir) |
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277 || self.dirs.contains(dir) |
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278 || find_dirs(dir).any(|parent_dir| self.roots.contains(parent_dir)) |
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279 { |
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280 return VisitChildrenSet::This; |
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281 } |
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282 |
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283 if self.parents.contains(directory.as_ref()) { |
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284 let multiset = self.get_all_parents_children(); |
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285 if let Some(children) = multiset.get(dir) { |
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286 return VisitChildrenSet::Set(children.to_owned()); |
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287 } |
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288 } |
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289 VisitChildrenSet::Empty |
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290 } |
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291 |
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292 fn matches_everything(&self) -> bool { |
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293 false |
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294 } |
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295 |
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296 fn is_exact(&self) -> bool { |
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297 false |
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298 } |
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299 } |
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300 |
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301 /// Returns a function that matches an `HgPath` against the given regex |
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302 /// pattern. |
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303 /// |
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304 /// This can fail when the pattern is invalid or not supported by the |
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305 /// underlying engine (the `regex` crate), for instance anything with |
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306 /// back-references. |
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307 #[timed] |
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308 fn re_matcher( |
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309 pattern: &[u8], |
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310 ) -> PatternResult<impl Fn(&HgPath) -> bool + Sync> { |
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311 use std::io::Write; |
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312 |
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313 // The `regex` crate adds `.*` to the start and end of expressions if there |
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314 // are no anchors, so add the start anchor. |
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315 let mut escaped_bytes = vec![b'^', b'(', b'?', b':']; |
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316 for byte in pattern { |
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317 if *byte > 127 { |
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318 write!(escaped_bytes, "\\x{:x}", *byte).unwrap(); |
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319 } else { |
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320 escaped_bytes.push(*byte); |
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321 } |
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322 } |
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323 escaped_bytes.push(b')'); |
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324 |
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325 // Avoid the cost of UTF8 checking |
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326 // |
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327 // # Safety |
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328 // This is safe because we escaped all non-ASCII bytes. |
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329 let pattern_string = unsafe { String::from_utf8_unchecked(escaped_bytes) }; |
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330 let re = regex::bytes::RegexBuilder::new(&pattern_string) |
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331 .unicode(false) |
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332 // Big repos with big `.hgignore` will hit the default limit and |
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333 // incur a significant performance hit. One repo's `hg status` hit |
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334 // multiple *minutes*. |
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335 .dfa_size_limit(50 * (1 << 20)) |
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336 .build() |
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337 .map_err(|e| PatternError::UnsupportedSyntax(e.to_string()))?; |
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338 |
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339 Ok(move |path: &HgPath| re.is_match(path.as_bytes())) |
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340 } |
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341 |
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342 /// Returns the regex pattern and a function that matches an `HgPath` against |
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343 /// said regex formed by the given ignore patterns. |
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344 fn build_regex_match( |
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345 ignore_patterns: &[IgnorePattern], |
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346 ) -> PatternResult<(Vec<u8>, Box<dyn Fn(&HgPath) -> bool + Sync>)> { |
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347 let mut regexps = vec![]; |
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348 let mut exact_set = HashSet::new(); |
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349 |
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350 for pattern in ignore_patterns { |
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351 if let Some(re) = build_single_regex(pattern)? { |
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352 regexps.push(re); |
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353 } else { |
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354 let exact = normalize_path_bytes(&pattern.pattern); |
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355 exact_set.insert(HgPathBuf::from_bytes(&exact)); |
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356 } |
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357 } |
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358 |
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359 let full_regex = regexps.join(&b'|'); |
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360 |
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361 // An empty pattern would cause the regex engine to incorrectly match the |
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362 // (empty) root directory |
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363 let func = if !(regexps.is_empty()) { |
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364 let matcher = re_matcher(&full_regex)?; |
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365 let func = move |filename: &HgPath| { |
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366 exact_set.contains(filename) || matcher(filename) |
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367 }; |
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368 Box::new(func) as Box<dyn Fn(&HgPath) -> bool + Sync> |
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369 } else { |
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370 let func = move |filename: &HgPath| exact_set.contains(filename); |
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371 Box::new(func) as Box<dyn Fn(&HgPath) -> bool + Sync> |
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372 }; |
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373 |
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374 Ok((full_regex, func)) |
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375 } |
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376 |
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377 /// Returns roots and directories corresponding to each pattern. |
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378 /// |
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379 /// This calculates the roots and directories exactly matching the patterns and |
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380 /// returns a tuple of (roots, dirs). It does not return other directories |
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381 /// which may also need to be considered, like the parent directories. |
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382 fn roots_and_dirs( |
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383 ignore_patterns: &[IgnorePattern], |
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384 ) -> (Vec<HgPathBuf>, Vec<HgPathBuf>) { |
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385 let mut roots = Vec::new(); |
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386 let mut dirs = Vec::new(); |
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387 |
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388 for ignore_pattern in ignore_patterns { |
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389 let IgnorePattern { |
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390 syntax, pattern, .. |
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391 } = ignore_pattern; |
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392 match syntax { |
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393 PatternSyntax::RootGlob | PatternSyntax::Glob => { |
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394 let mut root = HgPathBuf::new(); |
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395 for p in pattern.split(|c| *c == b'/') { |
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396 if p.iter().any(|c| match *c { |
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397 b'[' | b'{' | b'*' | b'?' => true, |
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398 _ => false, |
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399 }) { |
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400 break; |
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401 } |
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402 root.push(HgPathBuf::from_bytes(p).as_ref()); |
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403 } |
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404 roots.push(root); |
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405 } |
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406 PatternSyntax::Path | PatternSyntax::RelPath => { |
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407 let pat = HgPath::new(if pattern == b"." { |
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408 &[] as &[u8] |
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409 } else { |
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410 pattern |
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411 }); |
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412 roots.push(pat.to_owned()); |
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413 } |
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414 PatternSyntax::RootFiles => { |
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415 let pat = if pattern == b"." { |
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416 &[] as &[u8] |
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417 } else { |
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418 pattern |
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419 }; |
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420 dirs.push(HgPathBuf::from_bytes(pat)); |
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421 } |
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422 _ => { |
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423 roots.push(HgPathBuf::new()); |
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424 } |
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425 } |
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426 } |
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427 (roots, dirs) |
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428 } |
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429 |
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430 /// Paths extracted from patterns |
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431 #[derive(Debug, PartialEq)] |
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432 struct RootsDirsAndParents { |
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433 /// Directories to match recursively |
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434 pub roots: HashSet<HgPathBuf>, |
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435 /// Directories to match non-recursively |
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436 pub dirs: HashSet<HgPathBuf>, |
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437 /// Implicitly required directories to go to items in either roots or dirs |
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438 pub parents: HashSet<HgPathBuf>, |
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439 } |
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440 |
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441 /// Extract roots, dirs and parents from patterns. |
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442 fn roots_dirs_and_parents( |
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443 ignore_patterns: &[IgnorePattern], |
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444 ) -> PatternResult<RootsDirsAndParents> { |
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445 let (roots, dirs) = roots_and_dirs(ignore_patterns); |
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446 |
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447 let mut parents = HashSet::new(); |
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448 |
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449 parents.extend( |
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450 DirsMultiset::from_manifest(&dirs) |
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451 .map_err(|e| match e { |
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452 DirstateMapError::InvalidPath(e) => e, |
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453 _ => unreachable!(), |
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454 })? |
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455 .iter() |
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456 .map(ToOwned::to_owned), |
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457 ); |
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458 parents.extend( |
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459 DirsMultiset::from_manifest(&roots) |
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460 .map_err(|e| match e { |
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461 DirstateMapError::InvalidPath(e) => e, |
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462 _ => unreachable!(), |
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463 })? |
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464 .iter() |
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465 .map(ToOwned::to_owned), |
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466 ); |
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467 |
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468 Ok(RootsDirsAndParents { |
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469 roots: HashSet::from_iter(roots), |
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470 dirs: HashSet::from_iter(dirs), |
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471 parents, |
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472 }) |
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473 } |
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474 |
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475 /// Returns a function that checks whether a given file (in the general sense) |
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476 /// should be matched. |
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477 fn build_match<'a, 'b>( |
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478 ignore_patterns: Vec<IgnorePattern>, |
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479 ) -> PatternResult<(Vec<u8>, Box<dyn Fn(&HgPath) -> bool + 'b + Sync>)> { |
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480 let mut match_funcs: Vec<Box<dyn Fn(&HgPath) -> bool + Sync>> = vec![]; |
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481 // For debugging and printing |
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482 let mut patterns = vec![]; |
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483 |
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484 let (subincludes, ignore_patterns) = filter_subincludes(ignore_patterns)?; |
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485 |
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486 if !subincludes.is_empty() { |
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487 // Build prefix-based matcher functions for subincludes |
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488 let mut submatchers = FastHashMap::default(); |
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489 let mut prefixes = vec![]; |
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490 |
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491 for sub_include in subincludes { |
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492 let matcher = IncludeMatcher::new(sub_include.included_patterns)?; |
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493 let match_fn = |
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494 Box::new(move |path: &HgPath| matcher.matches(path)); |
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495 prefixes.push(sub_include.prefix.clone()); |
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496 submatchers.insert(sub_include.prefix.clone(), match_fn); |
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497 } |
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498 |
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499 let match_subinclude = move |filename: &HgPath| { |
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500 for prefix in prefixes.iter() { |
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501 if let Some(rel) = filename.relative_to(prefix) { |
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502 if (submatchers[prefix])(rel) { |
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503 return true; |
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504 } |
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505 } |
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506 } |
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507 false |
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508 }; |
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509 |
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510 match_funcs.push(Box::new(match_subinclude)); |
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511 } |
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512 |
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513 if !ignore_patterns.is_empty() { |
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514 // Either do dumb matching if all patterns are rootfiles, or match |
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515 // with a regex. |
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516 if ignore_patterns |
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517 .iter() |
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518 .all(|k| k.syntax == PatternSyntax::RootFiles) |
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519 { |
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520 let dirs: HashSet<_> = ignore_patterns |
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521 .iter() |
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522 .map(|k| k.pattern.to_owned()) |
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523 .collect(); |
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524 let mut dirs_vec: Vec<_> = dirs.iter().cloned().collect(); |
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525 |
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526 let match_func = move |path: &HgPath| -> bool { |
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527 let path = path.as_bytes(); |
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528 let i = path.iter().rfind(|a| **a == b'/'); |
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529 let dir = if let Some(i) = i { |
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530 &path[..*i as usize] |
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531 } else { |
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532 b"." |
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533 }; |
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534 dirs.contains(dir.deref()) |
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535 }; |
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536 match_funcs.push(Box::new(match_func)); |
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537 |
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538 patterns.extend(b"rootfilesin: "); |
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539 dirs_vec.sort(); |
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540 patterns.extend(dirs_vec.escaped_bytes()); |
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541 } else { |
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542 let (new_re, match_func) = build_regex_match(&ignore_patterns)?; |
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543 patterns = new_re; |
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544 match_funcs.push(match_func) |
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545 } |
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546 } |
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547 |
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548 Ok(if match_funcs.len() == 1 { |
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549 (patterns, match_funcs.remove(0)) |
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550 } else { |
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551 ( |
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552 patterns, |
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553 Box::new(move |f: &HgPath| -> bool { |
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554 match_funcs.iter().any(|match_func| match_func(f)) |
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555 }), |
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556 ) |
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557 }) |
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558 } |
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559 |
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560 /// Parses all "ignore" files with their recursive includes and returns a |
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561 /// function that checks whether a given file (in the general sense) should be |
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562 /// ignored. |
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563 pub fn get_ignore_function<'a>( |
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564 mut all_pattern_files: Vec<PathBuf>, |
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565 root_dir: &Path, |
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566 inspect_pattern_bytes: &mut impl FnMut(&[u8]), |
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567 ) -> PatternResult<( |
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568 Box<dyn for<'r> Fn(&'r HgPath) -> bool + Sync + 'a>, |
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569 Vec<PatternFileWarning>, |
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570 )> { |
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571 let mut all_patterns = vec![]; |
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572 let mut all_warnings = vec![]; |
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573 |
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574 // Sort to make the ordering of calls to `inspect_pattern_bytes` |
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575 // deterministic even if the ordering of `all_pattern_files` is not (such |
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576 // as when a iteration order of a Python dict or Rust HashMap is involved). |
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577 // Sort by "string" representation instead of the default by component |
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578 // (with a Rust-specific definition of a component) |
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579 all_pattern_files |
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580 .sort_unstable_by(|a, b| a.as_os_str().cmp(b.as_os_str())); |
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581 |
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582 for pattern_file in &all_pattern_files { |
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583 let (patterns, warnings) = get_patterns_from_file( |
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584 pattern_file, |
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585 root_dir, |
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586 inspect_pattern_bytes, |
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587 )?; |
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588 |
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589 all_patterns.extend(patterns.to_owned()); |
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590 all_warnings.extend(warnings); |
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591 } |
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592 let matcher = IncludeMatcher::new(all_patterns)?; |
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593 Ok(( |
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594 Box::new(move |path: &HgPath| matcher.matches(path)), |
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595 all_warnings, |
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596 )) |
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597 } |
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598 |
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599 impl<'a> IncludeMatcher<'a> { |
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600 pub fn new(ignore_patterns: Vec<IgnorePattern>) -> PatternResult<Self> { |
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601 let RootsDirsAndParents { |
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602 roots, |
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603 dirs, |
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604 parents, |
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605 } = roots_dirs_and_parents(&ignore_patterns)?; |
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606 let prefix = ignore_patterns.iter().any(|k| match k.syntax { |
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607 PatternSyntax::Path | PatternSyntax::RelPath => true, |
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608 _ => false, |
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609 }); |
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610 let (patterns, match_fn) = build_match(ignore_patterns)?; |
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611 |
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612 Ok(Self { |
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613 patterns, |
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614 match_fn, |
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615 prefix, |
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616 roots, |
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617 dirs, |
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618 parents, |
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619 }) |
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620 } |
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621 |
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622 fn get_all_parents_children(&self) -> DirsChildrenMultiset { |
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623 // TODO cache |
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624 let thing = self |
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625 .dirs |
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626 .iter() |
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627 .chain(self.roots.iter()) |
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628 .chain(self.parents.iter()); |
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629 DirsChildrenMultiset::new(thing, Some(&self.parents)) |
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630 } |
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631 } |
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632 |
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633 impl<'a> Display for IncludeMatcher<'a> { |
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634 fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error> { |
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635 // XXX What about exact matches? |
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636 // I'm not sure it's worth it to clone the HashSet and keep it |
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637 // around just in case someone wants to display the matcher, plus |
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638 // it's going to be unreadable after a few entries, but we need to |
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639 // inform in this display that exact matches are being used and are |
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640 // (on purpose) missing from the `includes`. |
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641 write!( |
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642 f, |
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643 "IncludeMatcher(includes='{}')", |
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644 String::from_utf8_lossy(&self.patterns.escaped_bytes()) |
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645 ) |
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646 } |
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647 } |
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648 |
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649 #[cfg(test)] |
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650 mod tests { |
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651 use super::*; |
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652 use pretty_assertions::assert_eq; |
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653 use std::path::Path; |
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654 |
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655 #[test] |
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656 fn test_roots_and_dirs() { |
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657 let pats = vec![ |
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658 IgnorePattern::new(PatternSyntax::Glob, b"g/h/*", Path::new("")), |
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659 IgnorePattern::new(PatternSyntax::Glob, b"g/h", Path::new("")), |
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660 IgnorePattern::new(PatternSyntax::Glob, b"g*", Path::new("")), |
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661 ]; |
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662 let (roots, dirs) = roots_and_dirs(&pats); |
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663 |
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664 assert_eq!( |
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665 roots, |
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666 vec!( |
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667 HgPathBuf::from_bytes(b"g/h"), |
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668 HgPathBuf::from_bytes(b"g/h"), |
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669 HgPathBuf::new() |
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670 ), |
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671 ); |
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672 assert_eq!(dirs, vec!()); |
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673 } |
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674 |
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675 #[test] |
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676 fn test_roots_dirs_and_parents() { |
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677 let pats = vec![ |
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678 IgnorePattern::new(PatternSyntax::Glob, b"g/h/*", Path::new("")), |
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679 IgnorePattern::new(PatternSyntax::Glob, b"g/h", Path::new("")), |
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680 IgnorePattern::new(PatternSyntax::Glob, b"g*", Path::new("")), |
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681 ]; |
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682 |
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683 let mut roots = HashSet::new(); |
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684 roots.insert(HgPathBuf::from_bytes(b"g/h")); |
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685 roots.insert(HgPathBuf::new()); |
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686 |
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687 let dirs = HashSet::new(); |
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688 |
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689 let mut parents = HashSet::new(); |
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690 parents.insert(HgPathBuf::new()); |
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691 parents.insert(HgPathBuf::from_bytes(b"g")); |
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692 |
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693 assert_eq!( |
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694 roots_dirs_and_parents(&pats).unwrap(), |
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695 RootsDirsAndParents { |
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696 roots, |
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697 dirs, |
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698 parents |
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699 } |
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700 ); |
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701 } |
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702 |
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703 #[test] |
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704 fn test_filematcher_visit_children_set() { |
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705 // Visitchildrenset |
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706 let files = vec![HgPathBuf::from_bytes(b"dir/subdir/foo.txt")]; |
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707 let matcher = FileMatcher::new(&files).unwrap(); |
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708 |
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709 let mut set = HashSet::new(); |
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710 set.insert(HgPath::new(b"dir")); |
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711 assert_eq!( |
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712 matcher.visit_children_set(HgPath::new(b"")), |
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713 VisitChildrenSet::Set(set) |
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714 ); |
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715 |
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716 let mut set = HashSet::new(); |
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717 set.insert(HgPath::new(b"subdir")); |
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718 assert_eq!( |
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719 matcher.visit_children_set(HgPath::new(b"dir")), |
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720 VisitChildrenSet::Set(set) |
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721 ); |
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722 |
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723 let mut set = HashSet::new(); |
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724 set.insert(HgPath::new(b"foo.txt")); |
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725 assert_eq!( |
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726 matcher.visit_children_set(HgPath::new(b"dir/subdir")), |
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727 VisitChildrenSet::Set(set) |
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728 ); |
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729 |
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730 assert_eq!( |
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731 matcher.visit_children_set(HgPath::new(b"dir/subdir/x")), |
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732 VisitChildrenSet::Empty |
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733 ); |
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734 assert_eq!( |
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735 matcher.visit_children_set(HgPath::new(b"dir/subdir/foo.txt")), |
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736 VisitChildrenSet::Empty |
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737 ); |
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738 assert_eq!( |
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739 matcher.visit_children_set(HgPath::new(b"folder")), |
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740 VisitChildrenSet::Empty |
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741 ); |
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742 } |
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743 |
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744 #[test] |
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745 fn test_filematcher_visit_children_set_files_and_dirs() { |
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746 let files = vec![ |
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747 HgPathBuf::from_bytes(b"rootfile.txt"), |
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748 HgPathBuf::from_bytes(b"a/file1.txt"), |
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749 HgPathBuf::from_bytes(b"a/b/file2.txt"), |
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750 // No file in a/b/c |
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751 HgPathBuf::from_bytes(b"a/b/c/d/file4.txt"), |
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752 ]; |
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753 let matcher = FileMatcher::new(&files).unwrap(); |
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754 |
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755 let mut set = HashSet::new(); |
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756 set.insert(HgPath::new(b"a")); |
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757 set.insert(HgPath::new(b"rootfile.txt")); |
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758 assert_eq!( |
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759 matcher.visit_children_set(HgPath::new(b"")), |
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760 VisitChildrenSet::Set(set) |
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761 ); |
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762 |
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763 let mut set = HashSet::new(); |
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764 set.insert(HgPath::new(b"b")); |
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765 set.insert(HgPath::new(b"file1.txt")); |
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766 assert_eq!( |
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767 matcher.visit_children_set(HgPath::new(b"a")), |
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768 VisitChildrenSet::Set(set) |
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769 ); |
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770 |
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771 let mut set = HashSet::new(); |
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772 set.insert(HgPath::new(b"c")); |
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773 set.insert(HgPath::new(b"file2.txt")); |
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774 assert_eq!( |
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775 matcher.visit_children_set(HgPath::new(b"a/b")), |
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776 VisitChildrenSet::Set(set) |
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777 ); |
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778 |
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779 let mut set = HashSet::new(); |
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780 set.insert(HgPath::new(b"d")); |
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781 assert_eq!( |
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782 matcher.visit_children_set(HgPath::new(b"a/b/c")), |
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783 VisitChildrenSet::Set(set) |
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784 ); |
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785 let mut set = HashSet::new(); |
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786 set.insert(HgPath::new(b"file4.txt")); |
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787 assert_eq!( |
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788 matcher.visit_children_set(HgPath::new(b"a/b/c/d")), |
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789 VisitChildrenSet::Set(set) |
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790 ); |
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791 |
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792 assert_eq!( |
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793 matcher.visit_children_set(HgPath::new(b"a/b/c/d/e")), |
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794 VisitChildrenSet::Empty |
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795 ); |
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796 assert_eq!( |
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797 matcher.visit_children_set(HgPath::new(b"folder")), |
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798 VisitChildrenSet::Empty |
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799 ); |
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800 } |
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801 |
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802 #[test] |
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803 fn test_includematcher() { |
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804 // VisitchildrensetPrefix |
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805 let matcher = IncludeMatcher::new(vec![IgnorePattern::new( |
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806 PatternSyntax::RelPath, |
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807 b"dir/subdir", |
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808 Path::new(""), |
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809 )]) |
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810 .unwrap(); |
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811 |
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812 let mut set = HashSet::new(); |
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813 set.insert(HgPath::new(b"dir")); |
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814 assert_eq!( |
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815 matcher.visit_children_set(HgPath::new(b"")), |
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816 VisitChildrenSet::Set(set) |
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817 ); |
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818 |
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819 let mut set = HashSet::new(); |
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820 set.insert(HgPath::new(b"subdir")); |
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821 assert_eq!( |
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822 matcher.visit_children_set(HgPath::new(b"dir")), |
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823 VisitChildrenSet::Set(set) |
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824 ); |
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825 assert_eq!( |
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826 matcher.visit_children_set(HgPath::new(b"dir/subdir")), |
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827 VisitChildrenSet::Recursive |
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828 ); |
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829 // OPT: This should probably be 'all' if its parent is? |
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830 assert_eq!( |
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831 matcher.visit_children_set(HgPath::new(b"dir/subdir/x")), |
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832 VisitChildrenSet::This |
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833 ); |
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834 assert_eq!( |
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835 matcher.visit_children_set(HgPath::new(b"folder")), |
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836 VisitChildrenSet::Empty |
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837 ); |
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838 |
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839 // VisitchildrensetRootfilesin |
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840 let matcher = IncludeMatcher::new(vec![IgnorePattern::new( |
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841 PatternSyntax::RootFiles, |
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842 b"dir/subdir", |
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843 Path::new(""), |
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844 )]) |
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845 .unwrap(); |
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846 |
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847 let mut set = HashSet::new(); |
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848 set.insert(HgPath::new(b"dir")); |
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849 assert_eq!( |
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850 matcher.visit_children_set(HgPath::new(b"")), |
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851 VisitChildrenSet::Set(set) |
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852 ); |
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853 |
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854 let mut set = HashSet::new(); |
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855 set.insert(HgPath::new(b"subdir")); |
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856 assert_eq!( |
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857 matcher.visit_children_set(HgPath::new(b"dir")), |
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858 VisitChildrenSet::Set(set) |
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859 ); |
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860 |
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861 assert_eq!( |
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862 matcher.visit_children_set(HgPath::new(b"dir/subdir")), |
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863 VisitChildrenSet::This |
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864 ); |
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865 assert_eq!( |
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866 matcher.visit_children_set(HgPath::new(b"dir/subdir/x")), |
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867 VisitChildrenSet::Empty |
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868 ); |
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869 assert_eq!( |
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870 matcher.visit_children_set(HgPath::new(b"folder")), |
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871 VisitChildrenSet::Empty |
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872 ); |
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873 |
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874 // VisitchildrensetGlob |
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875 let matcher = IncludeMatcher::new(vec![IgnorePattern::new( |
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876 PatternSyntax::Glob, |
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877 b"dir/z*", |
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878 Path::new(""), |
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879 )]) |
44522
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880 .unwrap(); |
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881 |
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882 let mut set = HashSet::new(); |
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883 set.insert(HgPath::new(b"dir")); |
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884 assert_eq!( |
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885 matcher.visit_children_set(HgPath::new(b"")), |
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886 VisitChildrenSet::Set(set) |
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887 ); |
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888 assert_eq!( |
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889 matcher.visit_children_set(HgPath::new(b"folder")), |
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890 VisitChildrenSet::Empty |
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891 ); |
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892 assert_eq!( |
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893 matcher.visit_children_set(HgPath::new(b"dir")), |
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894 VisitChildrenSet::This |
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895 ); |
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896 // OPT: these should probably be set(). |
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897 assert_eq!( |
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898 matcher.visit_children_set(HgPath::new(b"dir/subdir")), |
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899 VisitChildrenSet::This |
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900 ); |
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901 assert_eq!( |
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902 matcher.visit_children_set(HgPath::new(b"dir/subdir/x")), |
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903 VisitChildrenSet::This |
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904 ); |
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905 } |
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906 } |