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use std::io::{self, ErrorKind, Read};
use crate::cli;
use crate::config;
use crate::delta;
use crate::env::DeltaEnv;
use crate::git_config;
use crate::options::get::get_themes;
use crate::utils::bat::output::{OutputType, PagingMode};
pub fn show_themes(dark: bool, light: bool, computed_theme_is_light: bool) -> std::io::Result<()> {
use std::io::BufReader;
use bytelines::ByteLines;
use super::sample_diff::DIFF;
let mut input = DIFF.to_vec();
if !atty::is(atty::Stream::Stdin) {
let mut buf = Vec::new();
io::stdin().lock().read_to_end(&mut buf)?;
if !buf.is_empty() {
input = buf;
}
};
let env = DeltaEnv::default();
let git_config = git_config::GitConfig::try_create(&env);
let opt = cli::Opt::from_iter_and_git_config(
env.clone(),
&["delta", "--navigate", "--show-themes"],
git_config,
);
let mut output_type =
OutputType::from_mode(&env, PagingMode::Always, None, &config::Config::from(opt)).unwrap();
let title_style = ansi_term::Style::new().bold();
let writer = output_type.handle().unwrap();
for theme in &get_themes(git_config::GitConfig::try_create(&env)) {
let git_config = git_config::GitConfig::try_create(&env);
let opt = cli::Opt::from_iter_and_git_config(
env.clone(),
&["delta", "--features", theme],
git_config,
);
let is_dark_theme = opt.dark;
let is_light_theme = opt.light;
let config = config::Config::from(opt);
if (!computed_theme_is_light && is_dark_theme)
|| (computed_theme_is_light && is_light_theme)
|| (dark && light)
{
writeln!(writer, "\n\nTheme: {}\n", title_style.paint(theme))?;
if let Err(error) =
delta::delta(ByteLines::new(BufReader::new(&input[0..])), writer, &config)
{
match error.kind() {
ErrorKind::BrokenPipe => std::process::exit(0),
_ => eprintln!("{error}"),
}
}
}
}
Ok(())
}
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