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use rumu::{self, output::Output};
use std::env;
use std::path::PathBuf;
#[derive(Debug)]
struct MainError {
mes: &'static str,
}
impl std::fmt::Display for MainError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "main error: {}", self.mes)
}
}
impl std::error::Error for MainError {}
impl From<&'static str> for MainError {
fn from(mes: &'static str) -> Self {
Self { mes }
}
}
fn get_root() -> std::io::Result<PathBuf> {
let path = env::current_dir()?;
let path_ancestors = path.as_path().ancestors();
for p in path_ancestors {
let has_cargo_p = std::fs::read_dir(p)?
.into_iter()
.any(|p| p.unwrap().file_name() == std::ffi::OsString::from("Cargo.toml"));
if has_cargo_p {
return Ok(PathBuf::from(p));
}
}
Err(std::io::Error::new(
std::io::ErrorKind::NotFound,
"Cannot find project root",
))
}
fn main() -> Result<(), Box<dyn std::error::Error>> {
let args: Vec<_> = env::args().skip(1).collect();
if args.iter().any(|string| string as &str == "-h") {
println!(
"Usage: cargo run [--features ffmpeg] -- [-h] [sheet filename] [output filename] [encoder]"
);
println!();
let prefix = " ".repeat(7);
println!("{prefix}-h: just print this usage and exit");
println!();
println!("{prefix}sheet filename \t the file to read the sheet from");
println!("{prefix}output filename \t the name of the output audio file");
println!("{prefix}encoder \t\t the encoder used to encode the output");
println!("{}", "-".repeat(89));
println!("{prefix}To skip a paramter, use \"-\" in its place");
return Ok(());
}
let mut sheet_name = "Ievan Polkka".to_owned();
let mut output_name = "Ievan Polkka.opus".to_owned();
let mut encoder = if cfg!(feature = "ffmpeg") {
"opus"
} else {
"plain"
};
match args.len() {
0 => {}
1 => {
if args[0] != "-" {
sheet_name = args[0].to_owned();
output_name = format!("{sheet_name}.opus");
}
}
2 => {
if args[0] != "-" {
sheet_name = args[0].to_owned();
}
if args[1] != "-" {
output_name = args[1].to_owned();
} else {
output_name = format!("{sheet_name}.opus");
}
}
3 => {
if args[0] != "-" {
sheet_name = args[0].to_owned();
}
let mut output_not_specified = false;
if args[1] != "-" {
output_name = args[1].to_owned();
} else {
output_not_specified = true;
output_name = format!("{sheet_name}.{encoder}");
}
if args[2] != "-" {
encoder = &args[2];
if output_not_specified {
output_name = format!("{sheet_name}.{encoder}");
}
}
}
_ => {
println!(
"Usage: cargo run [--features ffmpeg] -- \
[-h] [sheet filename] [output filename] [encoder]"
);
println!();
let prefix = " ".repeat(7);
println!("{prefix}-h: just print this usage and exit");
println!();
println!("{prefix}sheet filename \t the file to read the sheet from");
println!("{prefix}output filename \t the name of the output audio file");
println!("{prefix}encoder \t\t the encoder used to encode the output");
println!("{}", "-".repeat(89));
println!("{prefix}To skip a paramter, use \"-\" in its place");
std::process::exit(1);
}
}
let project_root = get_root()?.to_str().unwrap().to_owned();
output_name = format!("{project_root}/audio files/{output_name}");
let source = std::fs::read_to_string(format!("{project_root}/songs/{sheet_name}.rumu"))?;
let mut sheet: rumu::sheet::Sheet = source.parse()?;
let wave: rumu::Wave = (&mut sheet).into();
let rate: rumu::Samples = 44100f64.into();
match encoder {
"opus" => {
if !cfg!(feature = "ffmpeg") {
return Err(
"To use the opus encoder one has to enable the \"ffmpeg\" feature.".into(),
);
}
#[cfg(feature = "ffmpeg")]
{
let output = rumu::output::ffmpeg_output::OpusOutput::default();
output.save(wave, rate, &output_name)?;
}
}
"mp3" => {
if !cfg!(feature = "ffmpeg") {
return Err(
"To use the mp3 encoder one has to enable the \"ffmpeg\" feature.".into(),
);
}
#[cfg(feature = "ffmpeg")]
{
let output = rumu::output::ffmpeg_output::MP3Output::default();
output.save(wave, rate, &output_name)?;
}
}
"aac" => {
if !cfg!(feature = "ffmpeg") {
return Err(
"To use the aac encoder one has to enable the \"ffmpeg\" feature.".into(),
);
}
#[cfg(feature = "ffmpeg")]
{
let output = rumu::output::ffmpeg_output::AACOutput::default();
output.save(wave, rate, &output_name)?;
}
}
"plain" => {
let output = rumu::output::PlainOutput::default();
output.save(wave, rate, &output_name)?;
}
_ => {
return Err("Unrecognized encoder: {encoder}".into());
}
}
Ok(())
}
|
