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use std::env;
use std::ffi::OsString;
use std::fs;
use std::io::{self, Write};
use std::path::PathBuf;
use shell_words;
use crate::directories::PROJECT_DIRS;
pub fn config_file() -> PathBuf {
env::var("BAT_CONFIG_PATH")
.ok()
.map(PathBuf::from)
.filter(|config_path| config_path.is_file())
.unwrap_or_else(|| PROJECT_DIRS.config_dir().join("config"))
}
pub fn generate_config_file() -> bat::errors::Result<()> {
let config_file = config_file();
if config_file.exists() {
println!("A config file already exists at: {}", config_file.to_string_lossy());
print!("Overwrite? (y/N): ");
io::stdout().flush()?;
let mut decision = String::new();
io::stdin().read_line(&mut decision)?;
if !decision.trim().eq_ignore_ascii_case("Y") {
return Ok(());
}
} else {
let config_dir = config_file.parent();
match config_dir {
Some(path) => fs::create_dir_all(path)?,
None => return Ok(Err(format!("Unable to write config file to: {}", config_file.to_string_lossy()))?),
}
}
let default_config = r#"# bat config
# Specify desired theme (e.g. "TwoDark"). Issue `bat --list-themes` for a list of all available themes
#--theme="TwoDark"
# Enable this to use italic text on the terminal (not supported on all terminals):
#--italic-text=always
# Uncomment the following line to disable automatic paging:
#--paging=never
# Use C++ syntax for .ino files
#--map-syntax "*.ino:C++"
# Use ".gitignore"-style highlighting for ".ignore" files
#--map-syntax ".ignore:Git Ignore"
"#;
fs::write(&config_file, default_config)?;
println!("Success! Config file written to {}", config_file.to_string_lossy());
return Ok(());
}
pub fn get_args_from_config_file() -> Result<Vec<OsString>, shell_words::ParseError> {
Ok(fs::read_to_string(config_file())
.ok()
.map(|content| get_args_from_str(&content))
.transpose()?
.unwrap_or_else(|| vec![]))
}
pub fn get_args_from_env_var() -> Option<Result<Vec<OsString>, shell_words::ParseError>> {
env::var("BAT_OPTS").ok().map(|s| get_args_from_str(&s))
}
fn get_args_from_str(content: &str) -> Result<Vec<OsString>, shell_words::ParseError> {
let args_per_line = content
.split('\n')
.map(|line| line.trim())
.filter(|line| !line.is_empty())
.filter(|line| !line.starts_with('#'))
.map(|line| shell_words::split(line))
.collect::<Result<Vec<_>, _>>()?;
Ok(args_per_line
.iter()
.flatten()
.map(|line| line.into())
.collect())
}
#[test]
fn empty() {
let args = get_args_from_str("").unwrap();
assert!(args.is_empty());
}
#[test]
fn single() {
assert_eq!(vec!["--plain"], get_args_from_str("--plain").unwrap());
}
#[test]
fn multiple() {
assert_eq!(
vec!["--plain", "--language=cpp"],
get_args_from_str("--plain --language=cpp").unwrap()
);
}
#[test]
fn quotes() {
assert_eq!(
vec!["--theme", "Sublime Snazzy"],
get_args_from_str("--theme \"Sublime Snazzy\"").unwrap()
);
}
#[test]
fn multi_line() {
let config = "
-p
--style numbers,changes
--color=always
";
assert_eq!(
vec!["-p", "--style", "numbers,changes", "--color=always"],
get_args_from_str(config).unwrap()
);
}
#[test]
fn comments() {
let config = "
# plain style
-p
# show line numbers and Git modifications
--style numbers,changes
# Always show ANSI colors
--color=always
";
assert_eq!(
vec!["-p", "--style", "numbers,changes", "--color=always"],
get_args_from_str(config).unwrap()
);
}
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