dircat 0.2.0

High-performance Rust utility that concatenates and displays directory contents, similar to the C++ DirCat.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

// src/output/header.rs

use crate::constants;
use anyhow::Result;
use std::io::Write;

/// Writes the global header to the output.
pub(crate) fn write_global_header(writer: &mut dyn Write) -> Result<()> {
    writer.write_all(constants::OUTPUT_FILE_HEADER.as_bytes())?;
    // Add an extra newline for spacing after the header
    writer.write_all(b"\n")?;
    Ok(())
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::constants;
    use std::io::Cursor;

    #[test]
    fn test_write_global_header_output() -> Result<()> {
        let mut writer = Cursor::new(Vec::new());
        write_global_header(&mut writer)?;
        let output = String::from_utf8(writer.into_inner())?;
        // Expect header + one blank line after it
        let expected = format!("{}\n\n", constants::OUTPUT_FILE_HEADER.trim_end());
        assert_eq!(output, expected);
        Ok(())
    }
}