2022-04-09 18:34:15 +00:00
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use std::fmt::{Display, Formatter};
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2022-04-09 18:40:37 +00:00
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use std::num::ParseIntError;
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2021-09-11 18:21:34 +00:00
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#[derive(Debug, Clone)]
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pub enum ByteArrayParseErr {
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EmptySrcArray,
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ParseIntError(ParseIntError),
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}
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impl From<ParseIntError> for ByteArrayParseErr {
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fn from(e: ParseIntError) -> Self {
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ByteArrayParseErr::ParseIntError(e)
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}
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}
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2022-04-09 18:34:15 +00:00
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impl Display for ByteArrayParseErr {
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fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
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let err_msg = match self {
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ByteArrayParseErr::EmptySrcArray => "Provided array is empty!".to_string(),
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ByteArrayParseErr::ParseIntError(e) => format!("Failed to parse as int: {}", e),
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};
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write!(f, "{}", err_msg)
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}
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}
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2021-09-11 18:21:34 +00:00
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fn bytes_from_str_array(src: Vec<String>) -> Result<Vec<u8>, ByteArrayParseErr> {
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src.iter()
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.map(|element| {
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if element.starts_with("0x") || element.starts_with("0X") {
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u8::from_str_radix(&element[2..], 16)
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} else if element.starts_with("0b") || element.starts_with("0B") {
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2022-04-12 03:18:56 +00:00
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u8::from_str_radix(&element[2..], 2)
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} else if element.starts_with('h') || element.starts_with('H') {
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2021-09-11 18:21:34 +00:00
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u8::from_str_radix(&element[1..], 16)
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2022-04-12 03:18:56 +00:00
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} else if element.len() > 1 && element.starts_with('0') {
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u8::from_str_radix(&element[1..], 8)
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2021-09-11 18:21:34 +00:00
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} else {
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2022-04-12 03:18:56 +00:00
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element.parse()
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2021-09-11 18:21:34 +00:00
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}
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})
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2021-10-09 20:00:49 +00:00
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.map(|e| e.map_err(ByteArrayParseErr::from))
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2021-09-11 18:21:34 +00:00
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.collect()
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}
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pub fn parse_bytes_from_input_arg(src: Vec<String>) -> Result<Vec<u8>, ByteArrayParseErr> {
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if src.is_empty() {
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return Err(ByteArrayParseErr::EmptySrcArray);
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}
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let str_arr = if src.len() == 1 {
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src[0]
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2022-04-10 16:42:05 +00:00
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.replace(',', " ")
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.replace('[', "")
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.replace(']', "")
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2021-09-11 18:21:34 +00:00
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.split_whitespace()
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.map(|s| s.to_string())
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.collect()
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} else {
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src
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};
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bytes_from_str_array(str_arr)
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}
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2022-04-12 03:18:56 +00:00
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#[cfg(test)]
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mod tests {
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use crate::parser::parse_bytes_from_input_arg;
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#[test]
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fn parse_base_10_array() {
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let array = vec!["[0, 1, 2, 3, 4]".to_string()];
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let out = parse_bytes_from_input_arg(array).unwrap();
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assert_eq!(out, vec![0, 1, 2, 3, 4])
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}
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#[test]
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fn parse_base_2_array() {
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let array = vec!["[0b0, 0b1, 0b10, 0b11, 0b100]".to_string()];
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let out = parse_bytes_from_input_arg(array).unwrap();
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assert_eq!(out, vec![0, 1, 2, 3, 4])
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}
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#[test]
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fn parse_base_8_array() {
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let array = vec!["[00, 01, 02, 03, 04]".to_string()];
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let out = parse_bytes_from_input_arg(array).unwrap();
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assert_eq!(out, vec![0, 1, 2, 3, 4])
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}
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#[test]
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fn parse_base_16_array() {
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let array = vec!["[0x0, 0x1, 0x2, h3, H4]".to_string()];
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let out = parse_bytes_from_input_arg(array).unwrap();
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assert_eq!(out, vec![0, 1, 2, 3, 4])
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}
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#[test]
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fn parse_base_mixed() {
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let array = vec!["[00 0x1, 2, h3, H4]".to_string()];
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let out = parse_bytes_from_input_arg(array).unwrap();
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assert_eq!(out, vec![0, 1, 2, 3, 4])
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}
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#[test]
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fn parse_no_braces_multi_args() {
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let array = vec![
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"0".to_string(),
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"1".to_string(),
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"2".to_string(),
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"3".to_string(),
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"4".to_string(),
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];
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let out = parse_bytes_from_input_arg(array).unwrap();
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assert_eq!(out, vec![0, 1, 2, 3, 4])
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}
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#[test]
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fn parse_no_braces_one_arg() {
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let array = vec!["0 1 2 3 4".to_string()];
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let out = parse_bytes_from_input_arg(array).unwrap();
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assert_eq!(out, vec![0, 1, 2, 3, 4])
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}
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}
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