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#[allow(clippy::needless_range_loop)]
pub fn bytes_to_hex_dump(record: &[u8]) -> String {
let cols = 16;
let record_cnt = record.len();
let mut result = String::new();
let mut collector = String::new();
for row_idx in 0..record_cnt {
if row_idx % cols == 0 {
result.push_str(&format!("{:08x}", row_idx));
}
if row_idx % (cols / 2) == 0 {
result.push(' ');
}
collector.push_str(&byte_to_string(&record[row_idx]));
result.push_str(&format!(" {:02x}", record[row_idx]));
if (row_idx + 1) % cols == 0 {
result.push_str(&format!(" |{}|\n", collector));
collector = String::new();
}
}
if !collector.is_empty() {
let last_char_idx = record_cnt % cols;
if last_char_idx <= cols / 2 {
result.push_str(&" ".to_owned());
}
for _ in last_char_idx..cols {
collector.push_str(&" ".to_owned());
result.push_str(&" ".to_owned());
}
result.push_str(&format!(" |{}|\n", collector));
}
result
}
fn byte_to_string(byte: &u8) -> String {
if 0x20 <= *byte && *byte < 0x7f {
format!("{}", *byte as char)
} else if *byte == 0xa {
".".to_owned()
} else {
" ".to_owned()
}
}
pub fn hex_dump_separator() -> String {
"------------------------------------------------------------------------------\n".to_owned()
}
#[cfg(test)]
mod test {
use super::bytes_to_hex_dump;
#[test]
fn test_bytes_to_hex_dump() {
let records: Vec<u8> = vec![
123, 10, 32, 32, 32, 32, 34, 112, 97, 114, 116, 105, 116, 105, 111, 110, 115, 34, 58,
32, 91, 10, 32, 32, 32, 32, 32, 32, 32, 32, 123, 10, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 34, 105, 100, 34, 58, 32, 48, 44, 10, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 34, 114, 101, 112, 108, 105, 99, 97, 115, 34, 58, 32, 91, 10, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 53, 48, 48, 49, 44, 10, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 53, 48, 48, 50, 44, 10, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 53, 48, 48, 51, 10, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 93, 10, 32, 32, 32, 32, 32, 32, 32, 32, 125, 10,
32, 32, 32, 32, 93, 10, 125,
];
let expected = r#"00000000 7b 0a 20 20 20 20 22 70 61 72 74 69 74 69 6f 6e |{. "partition|
00000010 73 22 3a 20 5b 0a 20 20 20 20 20 20 20 20 7b 0a |s": [. {.|
00000020 20 20 20 20 20 20 20 20 20 20 20 20 22 69 64 22 | "id"|
00000030 3a 20 30 2c 0a 20 20 20 20 20 20 20 20 20 20 20 |: 0,. |
00000040 20 22 72 65 70 6c 69 63 61 73 22 3a 20 5b 0a 20 | "replicas": [. |
00000050 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 35 | 5|
00000060 30 30 31 2c 0a 20 20 20 20 20 20 20 20 20 20 20 |001,. |
00000070 20 20 20 20 20 35 30 30 32 2c 0a 20 20 20 20 20 | 5002,. |
00000080 20 20 20 20 20 20 20 20 20 20 20 35 30 30 33 0a | 5003.|
00000090 20 20 20 20 20 20 20 20 20 20 20 20 5d 0a 20 20 | ]. |
000000a0 20 20 20 20 20 20 7d 0a 20 20 20 20 5d 0a 7d | }. ].} |
"#;
let result = bytes_to_hex_dump(&records);
assert_eq!(result, expected);
}
#[test]
fn test_bytes_to_hex_dump_half_row() {
let records: Vec<u8> = vec![123, 10, 32, 32, 32, 32, 34, 112];
let expected = r#"00000000 7b 0a 20 20 20 20 22 70 |{. "p |
"#;
let result = bytes_to_hex_dump(&records);
assert_eq!(result, expected);
}
}