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use core::convert::Infallible;
use std::{
collections::HashMap,
str::FromStr,
fs,
path::{Path, PathBuf},
ffi::OsStr
};
pub struct Lexicon {
pub word: String,
pub related: Vec<String>
}
impl FromStr for Lexicon {
type Err = Infallible;
fn from_str(s: &str) -> Result<Self, Self::Err> {
let parts = s.split(" ");
let tag = parts.clone().take_while(|&s| s != "|").nth(0).unwrap_or("").to_string();
let rest = parts.skip_while(|&s| s != "|").skip(1).map(|s| s.to_string()).collect::<Vec<String>>();
Ok(Lexicon {
word: tag,
related: rest
})
}
}
fn backlink<'a, 'b>(v: &'a Vec<Lexicon>, tag: &'b str) -> Option<&'a Lexicon> {
v.iter().find(|l| {
l.related.iter().find(|&s| s == tag).is_some()
})
}
fn find<'a, 'b>(v: &'a Vec<Lexicon>, tag: &'b str) -> Option<&'a Lexicon> {
v.iter().find(
|l| l.word == tag
)
}
fn links<'a, 'b>(v: &'a Vec<Lexicon>, tag: &'b str) -> Vec<&'a Lexicon> {
let l = match find(v, tag) {
Some(l) => l,
None => return Vec::new()
};
l.related.iter().map(|g| find(v, g)).filter(|g| g.is_some()).map(|g| g.unwrap()).collect::<Vec<&'a Lexicon>>()
}
fn create_links<'a, 'b>(v: &'a Vec<Lexicon>, tag: &'b str) -> Vec<&'a Lexicon> {
let mut ret = Vec::<&'a Lexicon>::new();
let mut b = tag;
while {
let lex = find(v, b).unwrap();
ret.push(lex);
if let Some(prev) = backlink(v, b) {
b = prev.word.as_str();
true
} else {
false
}
} {}
ret
}
fn create_nav<'a, 'b>(v: &'a Vec<&'b Lexicon>) -> String {
let mut html = Vec::<String>::new();
let v = v.iter().rev().take(3).collect::<Vec<&&'b Lexicon>>();
let iter = v.iter();
let count = v.len();
for (i, level) in iter.enumerate() {
html.push("<ul>".into());
let next_word = if i < count - 1 {
&v[i + 1].word
} else {
""
};
for (j, related) in level.related.iter().enumerate() {
let class = if related == next_word {
"nav-intended"
} else {
"nav-not-intended"
};
html.push(format!("<li><a href=\"/site/{}\" class=\"{}\">{}</a></li>", related, class, related));
}
html.push("</ul>".into());
}
html.join("")
}
fn process(lexicon: &Vec<Lexicon>, template: &String, src: &Path) -> String {
let dest = template.clone();
let stem = src.file_stem().and_then(OsStr::to_str).unwrap();
let ext = src.extension().and_then(OsStr::to_str).unwrap();
let src = fs::read_to_string(src).unwrap();
let m = create_links(lexicon, stem);
let nav = create_nav(&m);
let dest = dest.replace("{{ nav }}", &nav);
let dest = dest.replace("{{ article }}", &src);
dest
}
fn main() {
let lexicon = fs::read_to_string("lexicon").expect("Missing lexicon");
let lexicon = lexicon.split("\n").map(|s| Lexicon::from_str(s).unwrap()).collect::<Vec<Lexicon>>();
let template = fs::read_to_string("index.html").expect("Missing index.html");
let paths = fs::read_dir("source").unwrap();
for path in paths {
let mut dest = PathBuf::from("site");
// Get the source of the path
let src = path.unwrap().path();
let name = src.file_name().and_then(OsStr::to_str).unwrap();
let stem = src.file_stem().and_then(OsStr::to_str).unwrap();
let site = process(&lexicon, &template, &src);
// Build dest
dest.push(stem);
fs::write(&dest, &site);
}
}
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