annotate rust/hg-core/src/dirstate/entry.rs @ 48398:111098af6356

dirstate-item: add a "second_ambiguous` flag in the mtime tuple This will be used to support the `mtime-second-ambiguous` flag from dirstate v2. See format documentation for details. For now, we only make it possible to store the information, no other logic have been added. Differential Revision: https://phab.mercurial-scm.org/D11842
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Wed, 24 Nov 2021 04:40:00 +0100
parents 434de12918fd
children af303ae33cd7
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1 use crate::dirstate_tree::on_disk::DirstateV2ParseError;
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2 use crate::errors::HgError;
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3 use bitflags::bitflags;
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4 use std::convert::{TryFrom, TryInto};
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5 use std::fs;
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6 use std::io;
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7 use std::time::{SystemTime, UNIX_EPOCH};
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8
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9 #[derive(Copy, Clone, Debug, Eq, PartialEq)]
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10 pub enum EntryState {
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11 Normal,
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12 Added,
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13 Removed,
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14 Merged,
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15 }
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16
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17 /// `size` and `mtime.seconds` are truncated to 31 bits.
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18 ///
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19 /// TODO: double-check status algorithm correctness for files
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20 /// larger than 2 GiB or modified after 2038.
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21 #[derive(Debug, Copy, Clone)]
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22 pub struct DirstateEntry {
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23 pub(crate) flags: Flags,
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24 mode_size: Option<(u32, u32)>,
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25 mtime: Option<TruncatedTimestamp>,
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26 }
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27
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28 bitflags! {
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29 pub(crate) struct Flags: u8 {
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30 const WDIR_TRACKED = 1 << 0;
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31 const P1_TRACKED = 1 << 1;
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32 const P2_INFO = 1 << 2;
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33 const HAS_FALLBACK_EXEC = 1 << 3;
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34 const FALLBACK_EXEC = 1 << 4;
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35 const HAS_FALLBACK_SYMLINK = 1 << 5;
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36 const FALLBACK_SYMLINK = 1 << 6;
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37 }
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38 }
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39
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40 /// A Unix timestamp with nanoseconds precision
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41 #[derive(Debug, Copy, Clone)]
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42 pub struct TruncatedTimestamp {
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43 truncated_seconds: u32,
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44 /// Always in the `0 .. 1_000_000_000` range.
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45 nanoseconds: u32,
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46 second_ambiguous: bool,
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47 }
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48
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49 impl TruncatedTimestamp {
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50 /// Constructs from a timestamp potentially outside of the supported range,
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51 /// and truncate the seconds components to its lower 31 bits.
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52 ///
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53 /// Panics if the nanoseconds components is not in the expected range.
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54 pub fn new_truncate(
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55 seconds: i64,
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56 nanoseconds: u32,
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57 second_ambiguous: bool,
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58 ) -> Self {
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59 assert!(nanoseconds < NSEC_PER_SEC);
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60 Self {
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61 truncated_seconds: seconds as u32 & RANGE_MASK_31BIT,
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62 nanoseconds,
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63 second_ambiguous,
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64 }
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65 }
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66
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67 /// Construct from components. Returns an error if they are not in the
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68 /// expcted range.
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69 pub fn from_already_truncated(
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70 truncated_seconds: u32,
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71 nanoseconds: u32,
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72 second_ambiguous: bool,
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73 ) -> Result<Self, DirstateV2ParseError> {
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74 if truncated_seconds & !RANGE_MASK_31BIT == 0
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75 && nanoseconds < NSEC_PER_SEC
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76 {
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77 Ok(Self {
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78 truncated_seconds,
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79 nanoseconds,
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80 second_ambiguous,
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81 })
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82 } else {
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83 Err(DirstateV2ParseError)
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84 }
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85 }
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86
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87 pub fn for_mtime_of(metadata: &fs::Metadata) -> io::Result<Self> {
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88 #[cfg(unix)]
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89 {
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90 use std::os::unix::fs::MetadataExt;
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91 let seconds = metadata.mtime();
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92 // i64 -> u32 with value always in the `0 .. NSEC_PER_SEC` range
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93 let nanoseconds = metadata.mtime_nsec().try_into().unwrap();
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94 Ok(Self::new_truncate(seconds, nanoseconds, false))
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95 }
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96 #[cfg(not(unix))]
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97 {
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98 metadata.modified().map(Self::from)
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99 }
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100 }
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101
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102 /// The lower 31 bits of the number of seconds since the epoch.
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103 pub fn truncated_seconds(&self) -> u32 {
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104 self.truncated_seconds
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105 }
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106
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107 /// The sub-second component of this timestamp, in nanoseconds.
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108 /// Always in the `0 .. 1_000_000_000` range.
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109 ///
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110 /// This timestamp is after `(seconds, 0)` by this many nanoseconds.
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111 pub fn nanoseconds(&self) -> u32 {
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112 self.nanoseconds
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113 }
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114
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115 /// Returns whether two timestamps are equal modulo 2**31 seconds.
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116 ///
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117 /// If this returns `true`, the original values converted from `SystemTime`
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118 /// or given to `new_truncate` were very likely equal. A false positive is
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119 /// possible if they were exactly a multiple of 2**31 seconds apart (around
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120 /// 68 years). This is deemed very unlikely to happen by chance, especially
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121 /// on filesystems that support sub-second precision.
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122 ///
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123 /// If someone is manipulating the modification times of some files to
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124 /// intentionally make `hg status` return incorrect results, not truncating
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125 /// wouldn’t help much since they can set exactly the expected timestamp.
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126 ///
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127 /// Sub-second precision is ignored if it is zero in either value.
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128 /// Some APIs simply return zero when more precision is not available.
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129 /// When comparing values from different sources, if only one is truncated
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130 /// in that way, doing a simple comparison would cause many false
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131 /// negatives.
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132 pub fn likely_equal(self, other: Self) -> bool {
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133 self.truncated_seconds == other.truncated_seconds
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134 && (self.nanoseconds == other.nanoseconds
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135 || self.nanoseconds == 0
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136 || other.nanoseconds == 0)
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137 }
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138
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139 pub fn likely_equal_to_mtime_of(
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140 self,
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141 metadata: &fs::Metadata,
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142 ) -> io::Result<bool> {
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143 Ok(self.likely_equal(Self::for_mtime_of(metadata)?))
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144 }
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145 }
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146
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147 impl From<SystemTime> for TruncatedTimestamp {
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148 fn from(system_time: SystemTime) -> Self {
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149 // On Unix, `SystemTime` is a wrapper for the `timespec` C struct:
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150 // https://www.gnu.org/software/libc/manual/html_node/Time-Types.html#index-struct-timespec
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151 // We want to effectively access its fields, but the Rust standard
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152 // library does not expose them. The best we can do is:
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153 let seconds;
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154 let nanoseconds;
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155 match system_time.duration_since(UNIX_EPOCH) {
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156 Ok(duration) => {
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157 seconds = duration.as_secs() as i64;
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158 nanoseconds = duration.subsec_nanos();
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159 }
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160 Err(error) => {
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161 // `system_time` is before `UNIX_EPOCH`.
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162 // We need to undo this algorithm:
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163 // https://github.com/rust-lang/rust/blob/6bed1f0bc3cc50c10aab26d5f94b16a00776b8a5/library/std/src/sys/unix/time.rs#L40-L41
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164 let negative = error.duration();
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165 let negative_secs = negative.as_secs() as i64;
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166 let negative_nanos = negative.subsec_nanos();
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167 if negative_nanos == 0 {
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168 seconds = -negative_secs;
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169 nanoseconds = 0;
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170 } else {
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171 // For example if `system_time` was 4.3 seconds before
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172 // the Unix epoch we get a Duration that represents
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173 // `(-4, -0.3)` but we want `(-5, +0.7)`:
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174 seconds = -1 - negative_secs;
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175 nanoseconds = NSEC_PER_SEC - negative_nanos;
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176 }
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177 }
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178 };
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179 Self::new_truncate(seconds, nanoseconds, false)
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180 }
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181 }
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182
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183 const NSEC_PER_SEC: u32 = 1_000_000_000;
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184 const RANGE_MASK_31BIT: u32 = 0x7FFF_FFFF;
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185
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186 pub const MTIME_UNSET: i32 = -1;
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187
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188 /// A `DirstateEntry` with a size of `-2` means that it was merged from the
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189 /// other parent. This allows revert to pick the right status back during a
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190 /// merge.
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191 pub const SIZE_FROM_OTHER_PARENT: i32 = -2;
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192 /// A special value used for internal representation of special case in
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193 /// dirstate v1 format.
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194 pub const SIZE_NON_NORMAL: i32 = -1;
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195
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196 impl DirstateEntry {
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197 pub fn from_v2_data(
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198 wdir_tracked: bool,
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199 p1_tracked: bool,
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200 p2_info: bool,
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201 mode_size: Option<(u32, u32)>,
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202 mtime: Option<TruncatedTimestamp>,
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203 fallback_exec: Option<bool>,
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204 fallback_symlink: Option<bool>,
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205 ) -> Self {
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206 if let Some((mode, size)) = mode_size {
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207 // TODO: return an error for out of range values?
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208 assert!(mode & !RANGE_MASK_31BIT == 0);
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209 assert!(size & !RANGE_MASK_31BIT == 0);
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210 }
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211 let mut flags = Flags::empty();
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212 flags.set(Flags::WDIR_TRACKED, wdir_tracked);
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213 flags.set(Flags::P1_TRACKED, p1_tracked);
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214 flags.set(Flags::P2_INFO, p2_info);
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215 if let Some(exec) = fallback_exec {
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216 flags.insert(Flags::HAS_FALLBACK_EXEC);
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217 if exec {
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218 flags.insert(Flags::FALLBACK_EXEC);
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219 }
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220 }
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221 if let Some(exec) = fallback_symlink {
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222 flags.insert(Flags::HAS_FALLBACK_SYMLINK);
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223 if exec {
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224 flags.insert(Flags::FALLBACK_SYMLINK);
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225 }
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226 }
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227 Self {
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228 flags,
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229 mode_size,
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230 mtime,
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231 }
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232 }
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233
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234 pub fn from_v1_data(
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235 state: EntryState,
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236 mode: i32,
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237 size: i32,
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238 mtime: i32,
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239 ) -> Self {
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240 match state {
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241 EntryState::Normal => {
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242 if size == SIZE_FROM_OTHER_PARENT {
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243 Self {
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244 // might be missing P1_TRACKED
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245 flags: Flags::WDIR_TRACKED | Flags::P2_INFO,
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246 mode_size: None,
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247 mtime: None,
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248 }
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249 } else if size == SIZE_NON_NORMAL {
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250 Self {
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251 flags: Flags::WDIR_TRACKED | Flags::P1_TRACKED,
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252 mode_size: None,
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253 mtime: None,
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254 }
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255 } else if mtime == MTIME_UNSET {
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256 // TODO: return an error for negative values?
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257 let mode = u32::try_from(mode).unwrap();
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258 let size = u32::try_from(size).unwrap();
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259 Self {
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260 flags: Flags::WDIR_TRACKED | Flags::P1_TRACKED,
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261 mode_size: Some((mode, size)),
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262 mtime: None,
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263 }
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264 } else {
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265 // TODO: return an error for negative values?
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266 let mode = u32::try_from(mode).unwrap();
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267 let size = u32::try_from(size).unwrap();
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268 let mtime = u32::try_from(mtime).unwrap();
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269 let mtime = TruncatedTimestamp::from_already_truncated(
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270 mtime, 0, false,
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271 )
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272 .unwrap();
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273 Self {
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274 flags: Flags::WDIR_TRACKED | Flags::P1_TRACKED,
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275 mode_size: Some((mode, size)),
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276 mtime: Some(mtime),
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277 }
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278 }
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279 }
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280 EntryState::Added => Self {
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281 flags: Flags::WDIR_TRACKED,
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282 mode_size: None,
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283 mtime: None,
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284 },
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285 EntryState::Removed => Self {
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286 flags: if size == SIZE_NON_NORMAL {
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287 Flags::P1_TRACKED | Flags::P2_INFO
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288 } else if size == SIZE_FROM_OTHER_PARENT {
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289 // We don’t know if P1_TRACKED should be set (file history)
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290 Flags::P2_INFO
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291 } else {
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292 Flags::P1_TRACKED
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293 },
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294 mode_size: None,
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295 mtime: None,
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296 },
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297 EntryState::Merged => Self {
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298 flags: Flags::WDIR_TRACKED
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299 | Flags::P1_TRACKED // might not be true because of rename ?
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300 | Flags::P2_INFO, // might not be true because of rename ?
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301 mode_size: None,
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302 mtime: None,
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303 },
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304 }
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305 }
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306
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307 /// Creates a new entry in "removed" state.
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308 ///
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309 /// `size` is expected to be zero, `SIZE_NON_NORMAL`, or
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310 /// `SIZE_FROM_OTHER_PARENT`
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311 pub fn new_removed(size: i32) -> Self {
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312 Self::from_v1_data(EntryState::Removed, 0, size, 0)
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313 }
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314
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315 pub fn tracked(&self) -> bool {
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diff changeset
316 self.flags.contains(Flags::WDIR_TRACKED)
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317 }
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318
48143
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diff changeset
319 pub fn p1_tracked(&self) -> bool {
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diff changeset
320 self.flags.contains(Flags::P1_TRACKED)
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diff changeset
321 }
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322
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323 fn in_either_parent(&self) -> bool {
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diff changeset
324 self.flags.intersects(Flags::P1_TRACKED | Flags::P2_INFO)
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325 }
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diff changeset
326
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diff changeset
327 pub fn removed(&self) -> bool {
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diff changeset
328 self.in_either_parent() && !self.flags.contains(Flags::WDIR_TRACKED)
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329 }
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330
48142
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diff changeset
331 pub fn p2_info(&self) -> bool {
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diff changeset
332 self.flags.contains(Flags::WDIR_TRACKED | Flags::P2_INFO)
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diff changeset
333 }
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diff changeset
334
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diff changeset
335 pub fn added(&self) -> bool {
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diff changeset
336 self.flags.contains(Flags::WDIR_TRACKED) && !self.in_either_parent()
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337 }
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338
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339 pub fn maybe_clean(&self) -> bool {
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diff changeset
340 if !self.flags.contains(Flags::WDIR_TRACKED) {
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341 false
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342 } else if !self.flags.contains(Flags::P1_TRACKED) {
48086
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diff changeset
343 false
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344 } else if self.flags.contains(Flags::P2_INFO) {
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345 false
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346 } else {
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diff changeset
347 true
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348 }
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349 }
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350
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351 pub fn any_tracked(&self) -> bool {
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352 self.flags.intersects(
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353 Flags::WDIR_TRACKED | Flags::P1_TRACKED | Flags::P2_INFO,
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354 )
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355 }
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356
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357 /// Returns `(wdir_tracked, p1_tracked, p2_info, mode_size, mtime)`
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358 pub(crate) fn v2_data(
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359 &self,
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360 ) -> (
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361 bool,
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362 bool,
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363 bool,
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364 Option<(u32, u32)>,
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365 Option<TruncatedTimestamp>,
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366 Option<bool>,
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367 Option<bool>,
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368 ) {
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369 if !self.any_tracked() {
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370 // TODO: return an Option instead?
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371 panic!("Accessing v1_state of an untracked DirstateEntry")
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372 }
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373 let wdir_tracked = self.flags.contains(Flags::WDIR_TRACKED);
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374 let p1_tracked = self.flags.contains(Flags::P1_TRACKED);
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375 let p2_info = self.flags.contains(Flags::P2_INFO);
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376 let mode_size = self.mode_size;
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377 let mtime = self.mtime;
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378 (
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379 wdir_tracked,
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380 p1_tracked,
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381 p2_info,
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382 mode_size,
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383 mtime,
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diff changeset
384 self.get_fallback_exec(),
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385 self.get_fallback_symlink(),
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386 )
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387 }
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diff changeset
388
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389 fn v1_state(&self) -> EntryState {
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390 if !self.any_tracked() {
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391 // TODO: return an Option instead?
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392 panic!("Accessing v1_state of an untracked DirstateEntry")
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393 }
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394 if self.removed() {
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395 EntryState::Removed
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396 } else if self
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397 .flags
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398 .contains(Flags::WDIR_TRACKED | Flags::P1_TRACKED | Flags::P2_INFO)
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399 {
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400 EntryState::Merged
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401 } else if self.added() {
008959fcbfb2 rust: Align DirstateEntry internals with Python/C DirstateItem
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402 EntryState::Added
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403 } else {
008959fcbfb2 rust: Align DirstateEntry internals with Python/C DirstateItem
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diff changeset
404 EntryState::Normal
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405 }
48022
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406 }
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diff changeset
407
48138
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408 fn v1_mode(&self) -> i32 {
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diff changeset
409 if let Some((mode, _size)) = self.mode_size {
48194
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diff changeset
410 i32::try_from(mode).unwrap()
48138
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diff changeset
411 } else {
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diff changeset
412 0
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diff changeset
413 }
48022
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414 }
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diff changeset
415
48138
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416 fn v1_size(&self) -> i32 {
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diff changeset
417 if !self.any_tracked() {
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diff changeset
418 // TODO: return an Option instead?
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diff changeset
419 panic!("Accessing v1_size of an untracked DirstateEntry")
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diff changeset
420 }
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diff changeset
421 if self.removed()
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diff changeset
422 && self.flags.contains(Flags::P1_TRACKED | Flags::P2_INFO)
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diff changeset
423 {
48042
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diff changeset
424 SIZE_NON_NORMAL
48149
6ac2b417d5d7 dirstate-item: directly use `p2_info` in `v1_size`
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parents: 48143
diff changeset
425 } else if self.flags.contains(Flags::P2_INFO) {
48042
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diff changeset
426 SIZE_FROM_OTHER_PARENT
008959fcbfb2 rust: Align DirstateEntry internals with Python/C DirstateItem
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diff changeset
427 } else if self.removed() {
008959fcbfb2 rust: Align DirstateEntry internals with Python/C DirstateItem
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diff changeset
428 0
008959fcbfb2 rust: Align DirstateEntry internals with Python/C DirstateItem
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diff changeset
429 } else if self.added() {
008959fcbfb2 rust: Align DirstateEntry internals with Python/C DirstateItem
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diff changeset
430 SIZE_NON_NORMAL
48138
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diff changeset
431 } else if let Some((_mode, size)) = self.mode_size {
48194
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diff changeset
432 i32::try_from(size).unwrap()
48042
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diff changeset
433 } else {
48138
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diff changeset
434 SIZE_NON_NORMAL
48042
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diff changeset
435 }
48022
f2a9db29cb2d rust: Make the fields of DirstateEntry private
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diff changeset
436 }
f2a9db29cb2d rust: Make the fields of DirstateEntry private
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parents: 48018
diff changeset
437
48138
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diff changeset
438 fn v1_mtime(&self) -> i32 {
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diff changeset
439 if !self.any_tracked() {
38488d488ec1 dirstate-item: change the internal storage and constructor value
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parents: 48134
diff changeset
440 // TODO: return an Option instead?
38488d488ec1 dirstate-item: change the internal storage and constructor value
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diff changeset
441 panic!("Accessing v1_mtime of an untracked DirstateEntry")
38488d488ec1 dirstate-item: change the internal storage and constructor value
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diff changeset
442 }
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diff changeset
443 if self.removed() {
008959fcbfb2 rust: Align DirstateEntry internals with Python/C DirstateItem
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diff changeset
444 0
48138
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diff changeset
445 } else if self.flags.contains(Flags::P2_INFO) {
48042
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diff changeset
446 MTIME_UNSET
48138
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diff changeset
447 } else if !self.flags.contains(Flags::P1_TRACKED) {
48042
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diff changeset
448 MTIME_UNSET
48194
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diff changeset
449 } else if let Some(mtime) = self.mtime {
48260
269ff8978086 dirstate: store mtimes with nanosecond precision in memory
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diff changeset
450 i32::try_from(mtime.truncated_seconds()).unwrap()
48042
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diff changeset
451 } else {
48194
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diff changeset
452 MTIME_UNSET
48042
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diff changeset
453 }
48022
f2a9db29cb2d rust: Make the fields of DirstateEntry private
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diff changeset
454 }
f2a9db29cb2d rust: Make the fields of DirstateEntry private
Simon Sapin <simon.sapin@octobus.net>
parents: 48018
diff changeset
455
48138
38488d488ec1 dirstate-item: change the internal storage and constructor value
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diff changeset
456 // TODO: return `Option<EntryState>`? None when `!self.any_tracked`
38488d488ec1 dirstate-item: change the internal storage and constructor value
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diff changeset
457 pub fn state(&self) -> EntryState {
38488d488ec1 dirstate-item: change the internal storage and constructor value
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parents: 48134
diff changeset
458 self.v1_state()
38488d488ec1 dirstate-item: change the internal storage and constructor value
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diff changeset
459 }
38488d488ec1 dirstate-item: change the internal storage and constructor value
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parents: 48134
diff changeset
460
38488d488ec1 dirstate-item: change the internal storage and constructor value
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diff changeset
461 // TODO: return Option?
38488d488ec1 dirstate-item: change the internal storage and constructor value
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diff changeset
462 pub fn mode(&self) -> i32 {
38488d488ec1 dirstate-item: change the internal storage and constructor value
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parents: 48134
diff changeset
463 self.v1_mode()
38488d488ec1 dirstate-item: change the internal storage and constructor value
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diff changeset
464 }
38488d488ec1 dirstate-item: change the internal storage and constructor value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48134
diff changeset
465
38488d488ec1 dirstate-item: change the internal storage and constructor value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48134
diff changeset
466 // TODO: return Option?
38488d488ec1 dirstate-item: change the internal storage and constructor value
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parents: 48134
diff changeset
467 pub fn size(&self) -> i32 {
38488d488ec1 dirstate-item: change the internal storage and constructor value
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parents: 48134
diff changeset
468 self.v1_size()
38488d488ec1 dirstate-item: change the internal storage and constructor value
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parents: 48134
diff changeset
469 }
38488d488ec1 dirstate-item: change the internal storage and constructor value
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parents: 48134
diff changeset
470
38488d488ec1 dirstate-item: change the internal storage and constructor value
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parents: 48134
diff changeset
471 // TODO: return Option?
38488d488ec1 dirstate-item: change the internal storage and constructor value
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parents: 48134
diff changeset
472 pub fn mtime(&self) -> i32 {
38488d488ec1 dirstate-item: change the internal storage and constructor value
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parents: 48134
diff changeset
473 self.v1_mtime()
38488d488ec1 dirstate-item: change the internal storage and constructor value
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parents: 48134
diff changeset
474 }
38488d488ec1 dirstate-item: change the internal storage and constructor value
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parents: 48134
diff changeset
475
48252
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
476 pub fn get_fallback_exec(&self) -> Option<bool> {
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
477 if self.flags.contains(Flags::HAS_FALLBACK_EXEC) {
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
478 Some(self.flags.contains(Flags::FALLBACK_EXEC))
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
479 } else {
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
480 None
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
481 }
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
482 }
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
483
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
484 pub fn set_fallback_exec(&mut self, value: Option<bool>) {
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
485 match value {
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
486 None => {
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
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parents: 48218
diff changeset
487 self.flags.remove(Flags::HAS_FALLBACK_EXEC);
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
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parents: 48218
diff changeset
488 self.flags.remove(Flags::FALLBACK_EXEC);
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
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parents: 48218
diff changeset
489 }
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
490 Some(exec) => {
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
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parents: 48218
diff changeset
491 self.flags.insert(Flags::HAS_FALLBACK_EXEC);
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
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parents: 48218
diff changeset
492 if exec {
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
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parents: 48218
diff changeset
493 self.flags.insert(Flags::FALLBACK_EXEC);
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
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parents: 48218
diff changeset
494 }
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
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parents: 48218
diff changeset
495 }
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
496 }
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
497 }
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
498
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
499 pub fn get_fallback_symlink(&self) -> Option<bool> {
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
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parents: 48218
diff changeset
500 if self.flags.contains(Flags::HAS_FALLBACK_SYMLINK) {
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
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parents: 48218
diff changeset
501 Some(self.flags.contains(Flags::FALLBACK_SYMLINK))
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
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parents: 48218
diff changeset
502 } else {
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
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parents: 48218
diff changeset
503 None
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
504 }
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
505 }
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
506
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
507 pub fn set_fallback_symlink(&mut self, value: Option<bool>) {
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
508 match value {
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
509 None => {
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
510 self.flags.remove(Flags::HAS_FALLBACK_SYMLINK);
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
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parents: 48218
diff changeset
511 self.flags.remove(Flags::FALLBACK_SYMLINK);
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
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parents: 48218
diff changeset
512 }
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
513 Some(symlink) => {
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
514 self.flags.insert(Flags::HAS_FALLBACK_SYMLINK);
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
515 if symlink {
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
516 self.flags.insert(Flags::FALLBACK_SYMLINK);
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
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parents: 48218
diff changeset
517 }
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
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parents: 48218
diff changeset
518 }
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
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parents: 48218
diff changeset
519 }
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
520 }
602c8e8411f5 dirstate: add a concept of "fallback" flags to dirstate item
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48218
diff changeset
521
48260
269ff8978086 dirstate: store mtimes with nanosecond precision in memory
Simon Sapin <simon.sapin@octobus.net>
parents: 48259
diff changeset
522 pub fn truncated_mtime(&self) -> Option<TruncatedTimestamp> {
269ff8978086 dirstate: store mtimes with nanosecond precision in memory
Simon Sapin <simon.sapin@octobus.net>
parents: 48259
diff changeset
523 self.mtime
269ff8978086 dirstate: store mtimes with nanosecond precision in memory
Simon Sapin <simon.sapin@octobus.net>
parents: 48259
diff changeset
524 }
269ff8978086 dirstate: store mtimes with nanosecond precision in memory
Simon Sapin <simon.sapin@octobus.net>
parents: 48259
diff changeset
525
48134
3c7db97ce541 dirstate-item: implement `drop_merge_data` on the Rust DirstateItem
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48087
diff changeset
526 pub fn drop_merge_data(&mut self) {
48138
38488d488ec1 dirstate-item: change the internal storage and constructor value
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parents: 48134
diff changeset
527 if self.flags.contains(Flags::P2_INFO) {
38488d488ec1 dirstate-item: change the internal storage and constructor value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48134
diff changeset
528 self.flags.remove(Flags::P2_INFO);
38488d488ec1 dirstate-item: change the internal storage and constructor value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48134
diff changeset
529 self.mode_size = None;
38488d488ec1 dirstate-item: change the internal storage and constructor value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48134
diff changeset
530 self.mtime = None;
48134
3c7db97ce541 dirstate-item: implement `drop_merge_data` on the Rust DirstateItem
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48087
diff changeset
531 }
3c7db97ce541 dirstate-item: implement `drop_merge_data` on the Rust DirstateItem
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48087
diff changeset
532 }
3c7db97ce541 dirstate-item: implement `drop_merge_data` on the Rust DirstateItem
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48087
diff changeset
533
48043
3e69bef2031a rust: Add Python bindings for DirstateEntry as rustext.dirstate.DirstateItem
Simon Sapin <simon.sapin@octobus.net>
parents: 48042
diff changeset
534 pub fn set_possibly_dirty(&mut self) {
48138
38488d488ec1 dirstate-item: change the internal storage and constructor value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48134
diff changeset
535 self.mtime = None
48043
3e69bef2031a rust: Add Python bindings for DirstateEntry as rustext.dirstate.DirstateItem
Simon Sapin <simon.sapin@octobus.net>
parents: 48042
diff changeset
536 }
3e69bef2031a rust: Add Python bindings for DirstateEntry as rustext.dirstate.DirstateItem
Simon Sapin <simon.sapin@octobus.net>
parents: 48042
diff changeset
537
48260
269ff8978086 dirstate: store mtimes with nanosecond precision in memory
Simon Sapin <simon.sapin@octobus.net>
parents: 48259
diff changeset
538 pub fn set_clean(
269ff8978086 dirstate: store mtimes with nanosecond precision in memory
Simon Sapin <simon.sapin@octobus.net>
parents: 48259
diff changeset
539 &mut self,
269ff8978086 dirstate: store mtimes with nanosecond precision in memory
Simon Sapin <simon.sapin@octobus.net>
parents: 48259
diff changeset
540 mode: u32,
269ff8978086 dirstate: store mtimes with nanosecond precision in memory
Simon Sapin <simon.sapin@octobus.net>
parents: 48259
diff changeset
541 size: u32,
269ff8978086 dirstate: store mtimes with nanosecond precision in memory
Simon Sapin <simon.sapin@octobus.net>
parents: 48259
diff changeset
542 mtime: TruncatedTimestamp,
269ff8978086 dirstate: store mtimes with nanosecond precision in memory
Simon Sapin <simon.sapin@octobus.net>
parents: 48259
diff changeset
543 ) {
48194
1000db4a71f1 dirstate-v2: Store unsigned integers inside DirstateEntry
Simon Sapin <simon.sapin@octobus.net>
parents: 48193
diff changeset
544 let size = size & RANGE_MASK_31BIT;
48043
3e69bef2031a rust: Add Python bindings for DirstateEntry as rustext.dirstate.DirstateItem
Simon Sapin <simon.sapin@octobus.net>
parents: 48042
diff changeset
545 self.flags.insert(Flags::WDIR_TRACKED | Flags::P1_TRACKED);
48138
38488d488ec1 dirstate-item: change the internal storage and constructor value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48134
diff changeset
546 self.mode_size = Some((mode, size));
38488d488ec1 dirstate-item: change the internal storage and constructor value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48134
diff changeset
547 self.mtime = Some(mtime);
48043
3e69bef2031a rust: Add Python bindings for DirstateEntry as rustext.dirstate.DirstateItem
Simon Sapin <simon.sapin@octobus.net>
parents: 48042
diff changeset
548 }
3e69bef2031a rust: Add Python bindings for DirstateEntry as rustext.dirstate.DirstateItem
Simon Sapin <simon.sapin@octobus.net>
parents: 48042
diff changeset
549
3e69bef2031a rust: Add Python bindings for DirstateEntry as rustext.dirstate.DirstateItem
Simon Sapin <simon.sapin@octobus.net>
parents: 48042
diff changeset
550 pub fn set_tracked(&mut self) {
48138
38488d488ec1 dirstate-item: change the internal storage and constructor value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48134
diff changeset
551 self.flags.insert(Flags::WDIR_TRACKED);
38488d488ec1 dirstate-item: change the internal storage and constructor value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48134
diff changeset
552 // `set_tracked` is replacing various `normallookup` call. So we mark
38488d488ec1 dirstate-item: change the internal storage and constructor value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48134
diff changeset
553 // the files as needing lookup
38488d488ec1 dirstate-item: change the internal storage and constructor value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48134
diff changeset
554 //
38488d488ec1 dirstate-item: change the internal storage and constructor value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48134
diff changeset
555 // Consider dropping this in the future in favor of something less
38488d488ec1 dirstate-item: change the internal storage and constructor value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48134
diff changeset
556 // broad.
38488d488ec1 dirstate-item: change the internal storage and constructor value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48134
diff changeset
557 self.mtime = None;
48043
3e69bef2031a rust: Add Python bindings for DirstateEntry as rustext.dirstate.DirstateItem
Simon Sapin <simon.sapin@octobus.net>
parents: 48042
diff changeset
558 }
3e69bef2031a rust: Add Python bindings for DirstateEntry as rustext.dirstate.DirstateItem
Simon Sapin <simon.sapin@octobus.net>
parents: 48042
diff changeset
559
3e69bef2031a rust: Add Python bindings for DirstateEntry as rustext.dirstate.DirstateItem
Simon Sapin <simon.sapin@octobus.net>
parents: 48042
diff changeset
560 pub fn set_untracked(&mut self) {
3e69bef2031a rust: Add Python bindings for DirstateEntry as rustext.dirstate.DirstateItem
Simon Sapin <simon.sapin@octobus.net>
parents: 48042
diff changeset
561 self.flags.remove(Flags::WDIR_TRACKED);
48138
38488d488ec1 dirstate-item: change the internal storage and constructor value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48134
diff changeset
562 self.mode_size = None;
38488d488ec1 dirstate-item: change the internal storage and constructor value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48134
diff changeset
563 self.mtime = None;
48043
3e69bef2031a rust: Add Python bindings for DirstateEntry as rustext.dirstate.DirstateItem
Simon Sapin <simon.sapin@octobus.net>
parents: 48042
diff changeset
564 }
3e69bef2031a rust: Add Python bindings for DirstateEntry as rustext.dirstate.DirstateItem
Simon Sapin <simon.sapin@octobus.net>
parents: 48042
diff changeset
565
48022
f2a9db29cb2d rust: Make the fields of DirstateEntry private
Simon Sapin <simon.sapin@octobus.net>
parents: 48018
diff changeset
566 /// Returns `(state, mode, size, mtime)` for the puprose of serialization
f2a9db29cb2d rust: Make the fields of DirstateEntry private
Simon Sapin <simon.sapin@octobus.net>
parents: 48018
diff changeset
567 /// in the dirstate-v1 format.
f2a9db29cb2d rust: Make the fields of DirstateEntry private
Simon Sapin <simon.sapin@octobus.net>
parents: 48018
diff changeset
568 ///
f2a9db29cb2d rust: Make the fields of DirstateEntry private
Simon Sapin <simon.sapin@octobus.net>
parents: 48018
diff changeset
569 /// This includes marker values such as `mtime == -1`. In the future we may
f2a9db29cb2d rust: Make the fields of DirstateEntry private
Simon Sapin <simon.sapin@octobus.net>
parents: 48018
diff changeset
570 /// want to not represent these cases that way in memory, but serialization
f2a9db29cb2d rust: Make the fields of DirstateEntry private
Simon Sapin <simon.sapin@octobus.net>
parents: 48018
diff changeset
571 /// will need to keep the same format.
f2a9db29cb2d rust: Make the fields of DirstateEntry private
Simon Sapin <simon.sapin@octobus.net>
parents: 48018
diff changeset
572 pub fn v1_data(&self) -> (u8, i32, i32, i32) {
48138
38488d488ec1 dirstate-item: change the internal storage and constructor value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48134
diff changeset
573 (
38488d488ec1 dirstate-item: change the internal storage and constructor value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48134
diff changeset
574 self.v1_state().into(),
38488d488ec1 dirstate-item: change the internal storage and constructor value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48134
diff changeset
575 self.v1_mode(),
38488d488ec1 dirstate-item: change the internal storage and constructor value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48134
diff changeset
576 self.v1_size(),
38488d488ec1 dirstate-item: change the internal storage and constructor value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48134
diff changeset
577 self.v1_mtime(),
38488d488ec1 dirstate-item: change the internal storage and constructor value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48134
diff changeset
578 )
48022
f2a9db29cb2d rust: Make the fields of DirstateEntry private
Simon Sapin <simon.sapin@octobus.net>
parents: 48018
diff changeset
579 }
f2a9db29cb2d rust: Make the fields of DirstateEntry private
Simon Sapin <simon.sapin@octobus.net>
parents: 48018
diff changeset
580
48061
060cd909439f dirstate: drop all logic around the "non-normal" sets
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48051
diff changeset
581 pub(crate) fn is_from_other_parent(&self) -> bool {
48042
008959fcbfb2 rust: Align DirstateEntry internals with Python/C DirstateItem
Simon Sapin <simon.sapin@octobus.net>
parents: 48026
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582 self.state() == EntryState::Normal
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583 && self.size() == SIZE_FROM_OTHER_PARENT
48018
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584 }
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585
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586 // TODO: other platforms
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587 #[cfg(unix)]
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588 pub fn mode_changed(
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589 &self,
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590 filesystem_metadata: &std::fs::Metadata,
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591 ) -> bool {
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parents: 48263
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592 let dirstate_exec_bit = (self.mode() as u32 & EXEC_BIT_MASK) != 0;
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593 let fs_exec_bit = has_exec_bit(filesystem_metadata);
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594 dirstate_exec_bit != fs_exec_bit
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595 }
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596
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597 /// Returns a `(state, mode, size, mtime)` tuple as for
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598 /// `DirstateMapMethods::debug_iter`.
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599 pub fn debug_tuple(&self) -> (u8, i32, i32, i32) {
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38488d488ec1 dirstate-item: change the internal storage and constructor value
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600 (self.state().into(), self.mode(), self.size(), self.mtime())
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601 }
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602 }
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603
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604 impl EntryState {
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605 pub fn is_tracked(self) -> bool {
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606 use EntryState::*;
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607 match self {
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608 Normal | Added | Merged => true,
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1b2ee68e85f9 rust: Remove EntryState::Unknown
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609 Removed => false,
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610 }
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611 }
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612 }
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613
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614 impl TryFrom<u8> for EntryState {
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615 type Error = HgError;
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616
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617 fn try_from(value: u8) -> Result<Self, Self::Error> {
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618 match value {
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619 b'n' => Ok(EntryState::Normal),
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620 b'a' => Ok(EntryState::Added),
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621 b'r' => Ok(EntryState::Removed),
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622 b'm' => Ok(EntryState::Merged),
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623 _ => Err(HgError::CorruptedRepository(format!(
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624 "Incorrect dirstate entry state {}",
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625 value
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626 ))),
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627 }
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628 }
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629 }
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630
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631 impl Into<u8> for EntryState {
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632 fn into(self) -> u8 {
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633 match self {
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634 EntryState::Normal => b'n',
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635 EntryState::Added => b'a',
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636 EntryState::Removed => b'r',
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637 EntryState::Merged => b'm',
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638 }
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639 }
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640 }
48345
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641
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parents: 48263
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642 const EXEC_BIT_MASK: u32 = 0o100;
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Simon Sapin <simon.sapin@octobus.net>
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643
d5a91701f7dc rhg: Fix status desambiguation of symlinks and executable files
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parents: 48263
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644 pub fn has_exec_bit(metadata: &std::fs::Metadata) -> bool {
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645 // TODO: How to handle executable permissions on Windows?
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parents: 48263
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646 use std::os::unix::fs::MetadataExt;
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Simon Sapin <simon.sapin@octobus.net>
parents: 48263
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647 (metadata.mode() & EXEC_BIT_MASK) != 0
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Simon Sapin <simon.sapin@octobus.net>
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648 }