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annotate rust/rhg/src/commands/files.rs @ 45447:1b3197047f5c

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rhg: make output of `files` relative to the current directory and the root This matches the behavior of `hg files`. The util is added in `hg-core` instead of `rhg` because this operation could be useful for other external tools. (this was definitely not prompted by rust issue #50784, I swear) Differential Revision: https://phab.mercurial-scm.org/D8872
author Rapha?l Gom?s <rgomes@octobus.net>
date Thu, 30 Jul 2020 16:55:44 +0200
parents 5fe25f8ef5d9
children ed95ccc94333
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1 use crate::commands::Command;
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2 use crate::error::{CommandError, CommandErrorKind};
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3 use crate::ui::Ui;
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4 use hg::operations::{ListTrackedFiles, ListTrackedFilesErrorKind};
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5 use hg::utils::files::{get_bytes_from_path, relativize_path};
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6 use hg::utils::hg_path::HgPathBuf;
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7
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8 pub const HELP_TEXT: &str = "
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9 List tracked files.
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10
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11 Returns 0 on success.
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12 ";
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13
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14 pub struct FilesCommand<'a> {
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15 ui: &'a Ui,
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16 }
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17
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18 impl<'a> FilesCommand<'a> {
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19 pub fn new(ui: &'a Ui) -> Self {
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20 FilesCommand { ui }
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21 }
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22 }
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23
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24 impl<'a> Command<'a> for FilesCommand<'a> {
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25 fn run(&self) -> Result<(), CommandError> {
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26 let operation_builder = ListTrackedFiles::new()?;
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27 let operation = operation_builder.load().map_err(|err| {
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28 CommandErrorKind::Abort(Some(
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29 [b"abort: ", err.to_string().as_bytes(), b"\n"]
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30 .concat()
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31 .to_vec(),
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32 ))
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33 })?;
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34 let files = operation.run().map_err(|err| match err.kind {
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35 ListTrackedFilesErrorKind::ParseError(_) => {
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36 CommandErrorKind::Abort(Some(
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37 // TODO find a better error message
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38 b"abort: parse error\n".to_vec(),
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39 ))
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40 }
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41 })?;
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42
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43 let cwd = std::env::current_dir()
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44 .or_else(|e| Err(CommandErrorKind::CurrentDirNotFound(e)))?;
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45 let rooted_cwd = cwd
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46 .strip_prefix(operation_builder.get_root())
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47 .expect("cwd was already checked within the repository");
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48 let rooted_cwd = HgPathBuf::from(get_bytes_from_path(rooted_cwd));
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49
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50 let mut stdout = self.ui.stdout_buffer();
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51
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52 for file in files {
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53 stdout.write_all(relativize_path(file, &rooted_cwd).as_ref())?;
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54 stdout.write_all(b"\n")?;
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55 }
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56 stdout.flush()?;
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57
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58 Ok(())
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59 }
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60 }