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|
pub mod macros;
pub mod test;
/// Format a byte slice into a hex display string
pub fn hex_display_slice(slice: &[u8]) -> String {
let mut result = String::new();
for (chunk_index, chunk) in slice.chunks(16).enumerate() {
draw_range(&mut result, chunk_index * 16, chunk);
}
// Remove trailing newline
if result.ends_with('\n') {
result.pop();
}
result
}
/// Format a byte vector into a hex display string
pub fn hex_display_vec(vec: Vec<u8>) -> String {
hex_display_slice(&vec)
}
/// Draw one line of hex display
fn draw_range(result: &mut String, offset: usize, chunk: &[u8]) {
write_offset(result, offset);
write_data(result, chunk);
write_ascii(result, chunk);
result.push('\n');
}
/// Write the offset part
fn write_offset(result: &mut String, offset: usize) {
result.push_str(&format!("{:08x} ", offset));
}
/// Write the hex data part
fn write_data(result: &mut String, chunk: &[u8]) {
for (i, &byte) in chunk.iter().enumerate() {
result.push_str(&format!("{:02x}", byte));
if i < 15 {
result.push(' ');
}
if i == 7 {
result.push(' ');
}
}
if chunk.len() < 16 {
pad_data(result, chunk.len());
}
}
/// Pad missing hex data
fn pad_data(result: &mut String, actual_len: usize) {
let missing = 16 - actual_len;
for i in 0..missing {
result.push_str(" ");
if actual_len + i == 7 {
result.push(' ');
}
}
if result.ends_with(' ') {
result.pop();
}
}
/// Write the ASCII representation part
fn write_ascii(result: &mut String, chunk: &[u8]) {
result.push_str(" |");
for &byte in chunk {
if byte >= 32 && byte <= 126 {
result.push(byte as char);
} else {
result.push('.');
}
}
pad_ascii(result, chunk.len());
result.push('|');
}
/// Pad the ASCII part to a fixed width
fn pad_ascii(result: &mut String, actual_len: usize) {
for _ in actual_len..16 {
result.push(' ');
}
}
|
