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extern crate num_format;
use num_format::{Locale, ToFormattedString};
use std::fmt;
use std::sync::{Arc, Mutex};
use crate::node::Node;
use crate::traits::*;
pub fn count<'a, T: ParserTrait>(parser: &'a T, filters: &[String]) -> (usize, usize) {
let filters = parser.get_filters(filters);
let node = parser.get_root();
let mut cursor = node.object().walk();
let mut stack = Vec::new();
let mut good = 0;
let mut total = 0;
stack.push(node);
while let Some(node) = stack.pop() {
total += 1;
if filters.any(&node) {
good += 1;
}
cursor.reset(node.object());
if cursor.goto_first_child() {
loop {
stack.push(Node::new(cursor.node()));
if !cursor.goto_next_sibling() {
break;
}
}
}
}
(good, total)
}
pub struct CountCfg {
pub filters: Vec<String>,
pub stats: Arc<Mutex<Count>>,
}
#[derive(Debug, Default)]
pub struct Count {
pub good: usize,
pub total: usize,
}
impl Callback for Count {
type Res = std::io::Result<()>;
type Cfg = CountCfg;
fn call<T: ParserTrait>(cfg: Self::Cfg, parser: &T) -> Self::Res {
let (good, total) = count(parser, &cfg.filters);
let mut results = cfg.stats.lock().unwrap();
results.good += good;
results.total += total;
Ok(())
}
}
impl fmt::Display for Count {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
writeln!(
f,
"Total nodes: {}",
self.total.to_formatted_string(&Locale::en)
)?;
writeln!(
f,
"Found nodes: {}",
self.good.to_formatted_string(&Locale::en)
)?;
write!(
f,
"Percentage: {:.2}%",
(self.good as f64) / (self.total as f64) * 100.
)
}
}