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use std::{
ffi::OsStr,
io::{Read, Write},
os::unix::ffi::OsStrExt,
path::Path,
};
use repo2markdown::{normalizer::Normalizer, renderer::render};
fn main() {
println!("Hello, world!");
}
pub fn run<R: Read, W: Write>(
mut input: R,
mut output: W,
root: &Path,
origin_base: &Path,
) -> Result<(), Box<dyn std::error::Error>> {
let mut buf = Vec::new();
input.read_to_end(&mut buf)?;
let mut owned = Vec::new();
let normalizer = Normalizer::new(root, origin_base)?;
for segment in buf.split(|b| *b == 0) {
if segment.is_empty() {
continue;
}
let path = Path::new(OsStr::from_bytes(segment));
let normalized_path = normalizer.normalize(path)?;
let bytes = std::fs::read(normalized_path.absolute)?;
owned.push((normalized_path.relative, bytes));
}
// convert to expected renderer input
let refs: Vec<(&Path, &[u8])> = owned
.iter()
.map(|(p, b)| (p.as_path(), b.as_slice()))
.collect();
let rendered = render("Project name", &refs)?;
output.write_all(rendered.as_bytes())?;
Ok(())
}
#[cfg(test)]
mod tests {
use std::io::Cursor;
use std::path::Path;
use std::{env, fs};
use super::run;
fn paths_to_null_sep_bytes(file_paths: &[&Path]) -> Vec<u8> {
let mut output = Vec::new();
for path in file_paths {
output.extend(path.as_os_str().as_encoded_bytes());
output.push(0);
}
output
}
#[test]
fn cli_with_empty_input_produces_empty_project() {
let input = Cursor::new(b"");
let mut output = Vec::new();
let root = Path::new(".");
let origin_base = Path::new(".");
run(input, &mut output, root, origin_base).unwrap();
assert_eq!(String::from_utf8(output).unwrap(), "# Project name\n");
}
#[test]
fn cli_reads_single_file_from_stdin() {
// create a temporary file
let path = "test_main.rs";
fs::write(path, "fn main() {}").unwrap();
// null-delimited input
let input = Cursor::new(format!("{}\0", path).into_bytes());
let mut output = Vec::new();
let root = Path::new(".");
let origin_base = Path::new(".");
run(input, &mut output, root, origin_base).unwrap();
let output_str = String::from_utf8(output).unwrap();
assert!(output_str.contains("### \"test_main.rs\""));
assert!(output_str.contains("fn main() {}"));
// cleanup
fs::remove_file(path).unwrap();
}
#[test]
fn cli_reads_multiple_files_in_order() {
fs::write("a.rs", "A").unwrap();
fs::write("b.rs", "B").unwrap();
let input = Cursor::new(b"a.rs\0b.rs\0");
let mut output = Vec::new();
let root = Path::new(".");
let origin_base = Path::new(".");
run(input, &mut output, root, origin_base).unwrap();
let output = String::from_utf8(output).unwrap();
let a_pos = output.find("a.rs").unwrap();
let b_pos = output.find("b.rs").unwrap();
assert!(a_pos < b_pos);
fs::remove_file("a.rs").unwrap();
fs::remove_file("b.rs").unwrap();
}
#[test]
fn cli_normalizes_paths_before_rendering() {
fs::create_dir_all("test").unwrap();
fs::write("test/main.rs", "fn main() {}").unwrap();
let input = Cursor::new(b"test/./main.rs\0");
let mut output = Vec::new();
let root = Path::new(".");
let origin_base = Path::new(".");
run(input, &mut output, root, origin_base).unwrap();
let output = String::from_utf8(output).unwrap();
assert!(output.contains("### \"test/main.rs\""));
fs::remove_file("test/main.rs").unwrap();
fs::remove_dir("test").unwrap();
}
#[test]
fn cli_reads_from_origin_but_outputs_relative_to_root() {
fs::create_dir_all("sandbox/src").unwrap();
fs::write("sandbox/src/main.rs", "fn main() {}").unwrap();
// stdin provides path relative to origin_base
let input = Cursor::new(b"main.rs\0");
let mut output = Vec::new();
let root = Path::new("project");
let origin_base = Path::new("sandbox/src");
run(input, &mut output, root, origin_base).unwrap();
let output = String::from_utf8(output).unwrap();
// Must contain file content → proves correct reading
assert!(output.contains("fn main() {}"));
// Must contain normalized path → proves normalization applied
assert!(output.contains("sandbox/src/main.rs"));
fs::remove_file("sandbox/src/main.rs").unwrap();
fs::remove_dir("sandbox/src").unwrap();
fs::remove_dir("sandbox").unwrap();
}
#[test]
fn cli_ignores_origin_when_input_path_is_absolute() {
let temp_dir = env::temp_dir();
let filepath = temp_dir.join("test_main.rs");
fs::create_dir_all(temp_dir).unwrap();
fs::write(&filepath, "fn main() {}").unwrap();
// stdin provides path relative to origin_base
let input = Cursor::new(paths_to_null_sep_bytes(&[&filepath]));
let mut output = Vec::new();
let root = Path::new("project");
let origin_base = Path::new("sandbox/src");
run(input, &mut output, root, origin_base).unwrap();
let output = String::from_utf8(output).unwrap();
// Must contain file content → proves correct reading
assert!(output.contains("fn main() {}"));
fs::remove_file(filepath).unwrap();
}
}
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