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|
use crate::config::Config;
use crate::entities::{
Description, DynEntity, EntitiesManager, EntitiesManagerComponents, Usr,
};
use crate::pandoc::into_pandoc;
use anyhow::{ensure, Context, Result};
use rayon::Scope;
use thiserror::Error;
use std::collections::HashMap;
use std::io::Write;
use std::path::Path;
const DEFAULT_CSS: &[u8] = include_bytes!("../res/style.css");
pub(crate) fn generate(base_dir: &Path, manager: EntitiesManager, config: &Config) -> Result<()> {
let EntitiesManagerComponents {
toplevel_entities,
descriptions,
} = manager.decompose();
let md_output_dir = base_dir.join("markdown");
let html_output_dir = base_dir.join("html");
std::fs::create_dir_all(&md_output_dir)
.context("Failed to create the markdown output directory")?;
std::fs::create_dir_all(&html_output_dir)
.context("Failed to create the HTML output directory")?;
let mut css_tempfile = tempfile::Builder::new()
.prefix("style")
.suffix(".css")
.tempfile()?;
css_tempfile.write_all(DEFAULT_CSS)?;
let css_path = css_tempfile.path();
debug!("Generated temporary file with CSS at: {:?}", css_path);
rayon::scope(|scope| {
for (usr, entity) in &toplevel_entities {
generate_recursively(
&usr,
entity.as_ref(),
scope,
&descriptions,
&md_output_dir,
&html_output_dir,
css_path,
);
}
});
Ok(())
}
fn generate_recursively<'a>(
usr: &'a Usr,
entity: &'a DynEntity,
pool: &Scope<'a>,
descriptions: &'a HashMap<Usr, Description>,
md_output_dir: &'a Path,
html_output_dir: &'a Path,
css_path: &'a Path,
) {
pool.spawn(move |pool| {
trace!("Trying to generate {}", usr.0);
let leftovers = generate_single(
&usr,
entity,
descriptions.get(&usr).unwrap(),
&descriptions,
&md_output_dir,
&html_output_dir,
&css_path,
)
.unwrap();
for (usr, entity) in leftovers {
generate_recursively(
usr,
entity,
pool,
descriptions,
md_output_dir,
html_output_dir,
css_path,
);
}
});
}
fn generate_single<'e>(
usr: &Usr,
entity: &'e DynEntity,
description: &Description,
descriptions: &HashMap<Usr, Description>,
md_output_dir: impl AsRef<Path>,
html_output_dir: impl AsRef<Path>,
css_path: impl AsRef<Path>,
) -> Result<HashMap<&'e Usr, &'e DynEntity>> {
use std::io::prelude::*;
use std::process::{Command, Stdio};
let md_output_file = md_output_dir.as_ref().join(&usr.0);
let html_output_file = html_output_dir.as_ref().join(&usr.0);
let mut command = Command::new("pandoc");
command
.stdin(Stdio::piped())
.stdout(Stdio::piped())
.stderr(Stdio::piped())
.args(&[
"--from=json",
"--to=markdown",
"--output",
md_output_file
.to_str()
.context("Entity name is not valid UTF-8")?,
]);
debug!("Launching command: {:?}", command);
let mut pandoc = command
.spawn()
.context("Failed to execute Pandoc command")?;
let (pandoc_ast, leftovers) = into_pandoc(entity, description, descriptions);
if log_enabled!(log::Level::Trace) {
let json =
serde_json::to_string(&pandoc_ast).context("Failed to convert Pandoc AST to JSON")?;
trace!("Sending json: {}", json);
write!(
pandoc.stdin.as_mut().expect("Pandoc stdin not captured"),
"{}",
&json,
)
.context("Failed to convert Pandoc AST to JSON")?;
} else {
serde_json::to_writer(
pandoc.stdin.as_mut().expect("Pandoc stdin not captured"),
&pandoc_ast,
)
.context("Failed to convert Pandoc AST to JSON")?;
}
let command_str = format!("{:?}", pandoc);
let output = pandoc
.wait_with_output()
.expect("Pandoc command wasn't running");
ensure!(
output.status.success(),
CommandError {
command: format!("{:?}", command_str),
status: output.status,
stderr: String::from_utf8(output.stderr).expect("Pandoc outputted invalid UTF-8"),
}
);
let mut command = Command::new("pandoc");
command
.stdin(Stdio::piped())
.stdout(Stdio::piped())
.stderr(Stdio::piped())
.args(&[
"--from=markdown",
"--to=html",
"--css",
css_path
.as_ref()
.to_str()
.context("CSS path is not valid UTF-8")?,
"--standalone",
"--self-contained",
md_output_file
.to_str()
.context("Entity name is not valid UTF-8")?,
"--output",
html_output_file
.to_str()
.context("Entity name is not valid UTF-8")?,
]);
let command_str = format!("{:?}", command);
debug!("Launching command: {}", command_str);
let output = command
.output()
.context("Failed to execute Pandoc command")?;
ensure!(
output.status.success(),
CommandError {
command: command_str,
status: output.status,
stderr: String::from_utf8(output.stderr).expect("Pandoc outputted invalid UTF-8"),
}
);
Ok(leftovers)
}
#[derive(Debug, Clone, Error)]
#[error(
"Command {} returned status {:?} and stderr {:?}",
command,
status,
stderr
)]
struct CommandError {
command: String,
status: std::process::ExitStatus,
stderr: String,
}
|
