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|
use unicode_segmentation::UnicodeSegmentation;
use super::{Context, Module, RootModuleConfig};
use crate::configs::hg_branch::HgBranchConfig;
use crate::formatter::StringFormatter;
/// Creates a module with the Hg bookmark or branch in the current directory
///
/// Will display the bookmark or branch name if the current directory is an hg repo
pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
let is_hg_repo = context.try_begin_scan()?.set_folders(&[".hg"]).is_match();
if !is_hg_repo {
return None;
}
let mut module = context.new_module("hg_branch");
let config: HgBranchConfig = HgBranchConfig::try_load(module.config);
// As we default to disabled=true, we have to check here after loading our config module,
// before it was only checking against whatever is in the config starship.toml
if config.disabled {
return None;
};
let len = if config.truncation_length <= 0 {
log::warn!(
"\"truncation_length\" should be a positive value, found {}",
config.truncation_length
);
std::usize::MAX
} else {
config.truncation_length as usize
};
let branch_name =
get_hg_current_bookmark(context).unwrap_or_else(|| get_hg_branch_name(context));
let truncated_graphemes = get_graphemes(&branch_name, len);
// The truncation symbol should only be added if we truncated
let truncated_and_symbol = if len < graphemes_len(&branch_name) {
let truncation_symbol = get_graphemes(config.truncation_symbol, 1);
truncated_graphemes + &truncation_symbol
} else {
truncated_graphemes
};
let parsed = StringFormatter::new(config.format).and_then(|formatter| {
formatter
.map_meta(|variable, _| match variable {
"symbol" => Some(config.symbol),
_ => None,
})
.map_style(|variable| match variable {
"style" => Some(Ok(config.style)),
_ => None,
})
.map(|variable| match variable {
"branch" => Some(Ok(truncated_and_symbol.as_str())),
_ => None,
})
.parse(None)
});
module.set_segments(match parsed {
Ok(segments) => segments,
Err(error) => {
log::warn!("Error in module `hg_branch`:\n{}", error);
return None;
}
});
Some(module)
}
fn get_hg_branch_name(ctx: &Context) -> String {
std::fs::read_to_string(ctx.current_dir.join(".hg").join("branch"))
.map(|s| s.trim().into())
.unwrap_or_else(|_| "default".to_string())
}
fn get_hg_current_bookmark(ctx: &Context) -> Option<String> {
std::fs::read_to_string(ctx.current_dir.join(".hg").join("bookmarks.current"))
.map(|s| s.trim().into())
.ok()
}
fn get_graphemes(text: &str, length: usize) -> String {
UnicodeSegmentation::graphemes(text, true)
.take(length)
.collect::<Vec<&str>>()
.concat()
}
fn graphemes_len(text: &str) -> usize {
UnicodeSegmentation::graphemes(text, true).count()
}
#[cfg(test)]
mod tests {
use ansi_term::{Color, Style};
use std::fs;
use std::io;
use std::path::Path;
use std::process::Command;
use crate::test::{fixture_repo, FixtureProvider, ModuleRenderer};
enum Expect<'a> {
BranchName(&'a str),
Empty,
NoTruncation,
Symbol(&'a str),
Style(Style),
TruncationSymbol(&'a str),
}
#[test]
fn show_nothing_on_empty_dir() -> io::Result<()> {
let repo_dir = tempfile::tempdir()?;
let actual = ModuleRenderer::new("hg_branch")
.path(repo_dir.path())
.collect();
let expected = None;
assert_eq!(expected, actual);
repo_dir.close()
}
#[test]
#[ignore]
fn test_hg_disabled_per_default() -> io::Result<()> {
let tempdir = fixture_repo(FixtureProvider::Hg)?;
let repo_dir = tempdir.path();
run_hg(&["whatever", "blubber"], &repo_dir)?;
expect_hg_branch_with_config(
&repo_dir,
// no "disabled=false" in config!
Some(toml::toml! {
[hg_branch]
truncation_length = 14
}),
&[Expect::Empty],
);
tempdir.close()
}
#[test]
#[ignore]
fn test_hg_get_branch_fails() -> io::Result<()> {
let tempdir = tempfile::tempdir()?;
// Create a fake corrupted mercurial repo.
let hgdir = tempdir.path().join(".hg");
fs::create_dir(&hgdir)?;
fs::write(&hgdir.join("requires"), "fake-corrupted-repo")?;
expect_hg_branch_with_config(
tempdir.path(),
None,
&[Expect::BranchName(&"default"), Expect::NoTruncation],
);
tempdir.close()
}
#[test]
#[ignore]
fn test_hg_get_branch_autodisabled() -> io::Result<()> {
let tempdir = tempfile::tempdir()?;
expect_hg_branch_with_config(tempdir.path(), None, &[Expect::Empty]);
tempdir.close()
}
#[test]
#[ignore]
fn test_hg_bookmark() -> io::Result<()> {
let tempdir = fixture_repo(FixtureProvider::Hg)?;
let repo_dir = tempdir.path();
run_hg(&["bookmark", "bookmark-101"], &repo_dir)?;
expect_hg_branch_with_config(
&repo_dir,
None,
&[Expect::BranchName(&"bookmark-101"), Expect::NoTruncation],
);
tempdir.close()
}
#[test]
#[ignore]
fn test_default_truncation_symbol() -> io::Result<()> {
let tempdir = fixture_repo(FixtureProvider::Hg)?;
let repo_dir = tempdir.path();
run_hg(&["branch", "-f", "branch-name-101"], &repo_dir)?;
run_hg(
&[
"commit",
"-m",
"empty commit 101",
"-u",
"fake user <fake@user>",
],
&repo_dir,
)?;
expect_hg_branch_with_config(
&repo_dir,
Some(toml::toml! {
[hg_branch]
truncation_length = 14
disabled = false
}),
&[Expect::BranchName(&"branch-name-10")],
);
tempdir.close()
}
#[test]
#[ignore]
fn test_configured_symbols() -> io::Result<()> {
let tempdir = fixture_repo(FixtureProvider::Hg)?;
let repo_dir = tempdir.path();
run_hg(&["branch", "-f", "branch-name-121"], &repo_dir)?;
run_hg(
&[
"commit",
"-m",
"empty commit 121",
"-u",
"fake user <fake@user>",
],
&repo_dir,
)?;
expect_hg_branch_with_config(
&repo_dir,
Some(toml::toml! {
[hg_branch]
symbol = "B "
truncation_length = 14
truncation_symbol = "%"
disabled = false
}),
&[
Expect::BranchName(&"branch-name-12"),
Expect::Symbol(&"B"),
Expect::TruncationSymbol(&"%"),
],
);
tempdir.close()
}
#[test]
#[ignore]
fn test_configured_style() -> io::Result<()> {
let tempdir = fixture_repo(FixtureProvider::Hg)?;
let repo_dir = tempdir.path();
run_hg(&["branch", "-f", "branch-name-131"], &repo_dir)?;
|