#[macro_use] extern crate lazy_static;
extern crate regex;
mod markdown;
use regex::{Regex, RegexBuilder};
use std::path::{Path, PathBuf};
use std::collections::HashMap;
use std::error;
use std::io;
use std::fs;
use std::fmt;
lazy_static!{
static ref HEAD: Regex = reg(r"^\$(.+?)\$$");
static ref TAGS: Regex = reg(r"^#\[(.+?)\((.+?)\)\]");
static ref RMWS: Regex = reg(r"\s*([\s\S]*)\s*");
}
#[derive(Debug)]
#[derive(Clone)]
pub struct Metadata {
pathbuf: PathBuf,
}
#[derive(Debug)]
pub struct GemlFile {
pub gemls: Vec<Geml>,
pub metadata: Metadata,
}
#[derive(Debug)]
pub enum GemlError {
IoError(String),
MarkdownError(&'static str),
HtmlError(&'static str),
ParseError(&'static str),
}
impl GemlError {
pub fn unwrap(&self) -> &str {
use crate::GemlError::*;
match self {
IoError(x) => &x,
MarkdownError(x) => x,
HtmlError(x) => x,
ParseError(x) => x,
}
}
}
impl fmt::Display for GemlError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{:?}", self)
}
}
impl error::Error for GemlError {
fn description(&self) -> &str {
self.unwrap()
}
}
impl From<io::Error> for GemlError {
fn from(err: io::Error) -> GemlError {
use crate::GemlError::*;
IoError(err.to_string())
}
}
pub type Result<T> = std::result::Result<T, GemlError>;
impl GemlFile {
pub fn from_path(path: &Path) -> Result<GemlFile> {
let content = String::from_utf8_lossy(&fs::read(&path)?).to_string();
GemlFile::from_string(content, path)
}
pub fn from_string(content: String, path: &Path) -> Result<GemlFile> {
let gemls = Geml::deserialize(content)?;
let pathbuf = path.to_owned();
let metadata = Metadata { pathbuf, };
Ok(GemlFile {
gemls,
metadata,
})
}
pub fn parse(&self) -> Result<GemlFile> {
let mut gemls: Vec<Geml> = vec![];
for g in self.gemls.iter() {
gemls.push(g.parse()?);
}
Ok(GemlFile {
gemls,
metadata: self.metadata.clone(),
})
}
}
#[derive(Debug)]
#[derive(Clone)]
pub struct Geml {
pub key: String,
pub value: String,
pub tags: HashMap<String, String>,
}
fn reg(s: &str) -> regex::Regex {
RegexBuilder::new(s)
.multi_line(true)
.build()
.unwrap()
}
impl Geml {
pub fn deserialize(s: String) -> Result<Vec<Geml>> {
let mut indexes = HEAD.find_iter(&s)
.map(|x| {
vec![x.start(), x.end()]
})
.collect::<Vec<Vec<usize>>>();
indexes.push(vec![s.len()]);
let tmp: Vec<&usize> = indexes.iter()
.flatten()
.collect();
Ok(tmp.windows(3)
.step_by(2)
.filter(|x| { x.len() == 3 })
.map(|x| {
let string = &s[*x[1]..*x[2]];
let mut text_start = 0;
let mut tags = HashMap::new();
for cap in TAGS.captures_iter(&string) {
tags.insert(cap[1].to_string(), cap[2].to_string());
text_start = cap.get(0).unwrap().end();
}
print!("BLAH");
let value = string[text_start..].trim().to_string();
Geml {
key: s[*x[0]..*x[1]].to_string(),
value,
tags,
}
})
.collect())
}
pub fn parse(&self) -> Result<Geml> {
let mut value = self.value.clone();
if self.tags.get(&"markdown".to_owned()).unwrap_or(&"enabled".to_owned()) == &"enabled".to_owned() {
value = markdown::parse(value);
}
Ok(Geml {
key: self.key.clone(),
tags: self.tags.clone(),
value: value,
})
}
pub fn to_html(&self) -> Result<String> {
Ok(self.parse()?.value.clone())
}
}