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extern crate percent_encoding;
use percent_encoding::{percent_encode, CONTROLS};
use std::path::PathBuf;
use std::str::FromStr;
fn slugify(text: &str) -> String {
percent_encode(
text.replace(" ", "-").to_lowercase().as_bytes(),
CONTROLS,
)
.to_string()
}
pub struct Heading {
pub depth: usize,
pub title: String,
}
impl FromStr for Heading {
type Err = ();
fn from_str(s: &str) -> Result<Self, Self::Err> {
let trimmed = s.trim_end();
if trimmed.starts_with("#") {
let mut depth = 0usize;
let title = trimmed
.chars()
.skip_while(|c| {
if *c == '#' {
depth += 1;
true
} else {
false
}
})
.collect::<String>()
.trim_start()
.to_owned();
Ok(Heading {
depth: depth - 1,
title,
})
} else {
Err(())
}
}
}
impl Heading {
pub fn format(&self, config: &Config) -> Option<String> {
if self.depth >= config.min_depth
&& config.max_depth.map(|d| self.depth <= d).unwrap_or(true)
{
Some(format!(
"{}{} {}",
" ".repeat(config.indent)
.repeat(self.depth - config.min_depth),
&config.bullet,
if config.no_link {
self.title.clone()
} else {
format!("[{}](#{})", &self.title, slugify(&self.title))
}
))
} else {
None
}
}
}
pub enum InputFile {
Path(PathBuf),
StdIn,
}
pub struct Config {
pub input_file: InputFile,
pub bullet: String,
pub indent: usize,
pub max_depth: Option<usize>,
pub min_depth: usize,
pub header: Option<String>,
pub no_link: bool,
}
impl Default for Config {
fn default() -> Self {
Config {
input_file: InputFile::StdIn,
bullet: String::from("1."),
indent: 4,
max_depth: None,
min_depth: 0,
no_link: false,
header: Some(String::from("## Table of Contents")),
}
}
}