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comparison rust/rhg/src/commands/files.rs @ 45384:5fe25f8ef5d9

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rhg: add a `Files` `Command` to prepare the `rhg files` subcommand Differential Revision: https://phab.mercurial-scm.org/D8868
author Antoine Cezar <antoine.cezar@octobus.net>
date Wed, 29 Jul 2020 10:21:17 +0200
parents
children 1b3197047f5c
comparison
equal deleted inserted replaced
45383:5dbf875b3275 45384:5fe25f8ef5d9
1 use crate::commands::Command;
2 use crate::error::{CommandError, CommandErrorKind};
3 use crate::ui::Ui;
4 use hg::operations::{ListTrackedFiles, ListTrackedFilesErrorKind};
5
6 pub const HELP_TEXT: &str = "
7 List tracked files.
8
9 Returns 0 on success.
10 ";
11
12 pub struct FilesCommand<'a> {
13 ui: &'a Ui,
14 }
15
16 impl<'a> FilesCommand<'a> {
17 pub fn new(ui: &'a Ui) -> Self {
18 FilesCommand { ui }
19 }
20 }
21
22 impl<'a> Command<'a> for FilesCommand<'a> {
23 fn run(&self) -> Result<(), CommandError> {
24 let operation_builder = ListTrackedFiles::new()?;
25 let operation = operation_builder.load().map_err(|err| {
26 CommandErrorKind::Abort(Some(
27 [b"abort: ", err.to_string().as_bytes(), b"\n"]
28 .concat()
29 .to_vec(),
30 ))
31 })?;
32 let files = operation.run().map_err(|err| match err.kind {
33 ListTrackedFilesErrorKind::ParseError(_) => {
34 CommandErrorKind::Abort(Some(
35 // TODO find a better error message
36 b"abort: parse error\n".to_vec(),
37 ))
38 }
39 })?;
40
41 let mut stdout = self.ui.stdout_buffer();
42 for file in files {
43 stdout.write_all(file.as_bytes())?;
44 stdout.write_all(b"\n")?;
45 }
46 stdout.flush()?;
47
48 Ok(())
49 }
50 }