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pub mod config;
pub use crate::config::Config;
use std::{
borrow::Cow,
fs::{self, DirEntry},
path::{Path, MAIN_SEPARATOR},
};
#[derive(Debug, Clone, PartialEq)]
pub struct LanguageStat {
pub lang: String,
pub size: u64,
pub percentage: f64,
}
pub fn get_stat<P: AsRef<Path>>(path: P) -> std::io::Result<Vec<LanguageStat>> {
let config = Config::default();
get_stat_with_config(path, &config)
}
pub fn get_stat_with_config<P: AsRef<Path>>(
path: P,
config: &Config,
) -> std::io::Result<Vec<LanguageStat>> {
let sizes = get_size(path, config)?;
let mut sizes = sizes
.into_iter()
.filter(|(_, s)| *s != 0)
.collect::<Vec<_>>();
sizes.sort_by(|a, b| b.1.cmp(&a.1));
let total_size: u64 = sizes.iter().map(|v| v.1).sum();
let result = sizes
.iter()
.map(|v| LanguageStat {
lang: v.0.clone(),
size: v.1,
percentage: v.1 as f64 / total_size as f64 * 100.0,
})
.collect();
Ok(result)
}
fn get_size<P: AsRef<Path>>(path: P, config: &Config) -> std::io::Result<Vec<(String, u64)>> {
let common_ignores = &config.common.ignore;
let result = config
.language
.iter()
.filter_map(|language| {
let ignores: Vec<_> = common_ignores
.iter()
.chain(language.ignore.iter())
.collect();
let entries = &get_dir_entries(&path, &ignores, &language.ext)?;
let size: u64 = entries
.iter()
.filter_map(|v| Some(v.metadata().ok()?.len()))
.sum();
Some((language.lang.clone(), size))
})
.collect();
Ok(result)
}
fn get_dir_entries<
'a,
P: AsRef<Path>,
S: Into<Cow<'a, str>> + std::fmt::Display,
X: Into<Cow<'a, str>> + std::fmt::Display,
>(
path: P,
ignores: &[S],
exts: &[X],
) -> Option<Vec<DirEntry>> {
let path = path.as_ref().to_str()?;
let is_dot_dir = path != "." && path.split(&['/', '\\'][..]).last()?.starts_with('.');
if is_dot_dir {
return None;
}
let read_dir = match fs::read_dir(path) {
Ok(read_dir) => read_dir,
Err(_) => return None,
};
let result = read_dir
.into_iter()
.filter_map(|entry| -> Option<Vec<DirEntry>> {
let entry = entry.ok()?;
let entry_path = entry.path();
let entry_path = entry_path.to_string_lossy();
let is_ignored = ignores.iter().any(|ignore| {
entry_path.contains(&format!("{}{}{}", MAIN_SEPARATOR, ignore, MAIN_SEPARATOR))
});
if is_ignored {
return None;
};
if entry.metadata().ok()?.is_dir() {
return get_dir_entries(entry.path(), ignores, exts);
};
let is_correct_ext = exts
.iter()
.any(|ext| entry_path.ends_with(&format!(".{}", ext)));
if is_correct_ext {
Some(vec![entry])
} else {
None
}
})
.flatten()
.collect();
Some(result)
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_get_stat() {
let stat = get_stat(".").unwrap();
assert_eq!(stat[0].lang, "Rust".to_string());
assert_eq!(stat[0].percentage, 100.0);
}
#[test]
fn test_get_stat_with_config() {
let config = Config::default();
let stat = get_stat_with_config(".", &config).unwrap();
assert_eq!(stat[0].lang, "Rust".to_string());
assert_eq!(stat[0].percentage, 100.0);
assert_eq!(stat.len(), 1);
}
#[test]
fn test_get_dir_entries() {
let config = Config::default();
let common_ignores = &config.common.ignore;
let lang_ignores = &config.language[0].ignore;
let ignores: Vec<_> = common_ignores.iter().chain(lang_ignores.iter()).collect();
assert_eq!(
get_dir_entries(".", common_ignores, &config.language[0].ext)
.unwrap()
.iter()
.any(|entry| entry
.path()
.to_string_lossy()
.contains(&format!("{}.git{}", MAIN_SEPARATOR, MAIN_SEPARATOR))),
false
);
assert_eq!(
get_dir_entries(".", &ignores, &config.language[0].ext)
.unwrap()
.iter()
.any(|entry| entry
.path()
.to_string_lossy()
.contains(&format!("{}.git{}", MAIN_SEPARATOR, MAIN_SEPARATOR))),
false
);
}
}