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numf
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reafactor(numf_parser): add numf_parser_str and make numf_parser work with any data
cargo devel CI / cargo CI (push) Successful in 1m38s Details

This commit is contained in:
Christoph J. Scherr 2024-09-06 12:47:26 +02:00
parent 45409c4ff3
commit df32a863d6
Signed by: cscherrNT
GPG Key ID: 8E2B45BC51A27EA7
2 changed files with 64 additions and 38 deletions
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82
src/format.rs
View File

@ -116,12 +116,12 @@ pub struct FormatOptions {
#[arg(short = 'a', long)]
/// format raw, no text
raw: bool,
#[arg(short = 'r', long, default_value_t = 0, value_parser=numf_parser::<NumberType>)]
#[arg(short = 'r', long, default_value_t = 0, value_parser=numf_parser_str::<NumberType>)]
/// output random numbers
///
/// Add a user defined amount of cryptographically pseudorandom numbers to the number list.
rand: NumberType,
#[arg(long, default_value_t = NumberType::MAX, value_parser=numf_parser::<NumberType>)]
#[arg(long, default_value_t = NumberType::MAX, value_parser=numf_parser_str::<NumberType>)]
/// max for the random numbers
///
/// Generated numbers will not be lower than this. Only has an effect with --rand set.
@ -129,7 +129,7 @@ pub struct FormatOptions {
#[arg(short = 'z', long)]
/// format to base32
base32: bool,
#[clap(value_parser=numf_parser::<NumberType>, required=false)]
#[clap(value_parser=numf_parser_str::<NumberType>, required=false)]
/// numbers that should be formatted
///
/// Any of the [Formats](Format::format) are supported, but the prefixes are needed for formats
@ -367,17 +367,17 @@ impl Format {
///
/// ```
/// use clap::Parser;
/// use numf::format::numf_parser;
/// use numf::format::numf_parser_str;
///
/// #[derive(Parser)]
/// struct Args {
/// #[clap(short, long, value_parser=numf_parser::<u128>)]
/// #[clap(short, long, value_parser=numf_parser_str::<u128>)]
/// address: u128,
/// }
/// let args = Args::parse_from(&["", "-a", "0x10"]);
/// assert_eq!(args.address, 16);
/// ```
pub fn numf_parser<T>(s: &str) -> anyhow::Result<T>
pub fn numf_parser_str<T>(s: &str) -> anyhow::Result<T>
where
T: std::str::FromStr + std::convert::TryFrom<u128>,
<T as std::str::FromStr>::Err: std::fmt::Display,
@ -391,10 +391,29 @@ where
<T as std::convert::TryFrom<u128>>::Error: std::marker::Sync,
<T as std::convert::TryFrom<u128>>::Error: 'static,
{
if s.starts_with(&Format::Dec.prefix_str()) || s.parse::<T>().is_ok() {
let s = match s.strip_prefix(&Format::Dec.prefix_str()) {
numf_parser(s.as_bytes())
}
pub fn numf_parser<T>(data: &[u8]) -> anyhow::Result<T>
where
T: std::str::FromStr + std::convert::TryFrom<u128>,
<T as std::str::FromStr>::Err: std::fmt::Display,
T: num::Num,
<T as num::Num>::FromStrRadixErr: std::fmt::Display,
<T as std::str::FromStr>::Err: std::fmt::Debug,
u128: std::convert::From<T>,
<T as std::str::FromStr>::Err: std::error::Error,
<T as std::convert::TryFrom<u128>>::Error: std::error::Error,
<T as std::convert::TryFrom<u128>>::Error: std::marker::Send,
<T as std::convert::TryFrom<u128>>::Error: std::marker::Sync,
<T as std::convert::TryFrom<u128>>::Error: 'static,
{
let data_as_text = String::from_utf8_lossy(data).to_string();
if data_as_text.starts_with(&Format::Dec.prefix_str()) || data_as_text.parse::<T>().is_ok() {
let s = match data_as_text.strip_prefix(&Format::Dec.prefix_str()) {
Some(sr) => sr,
None => s,
None => &data_as_text,
};
match s.parse() {
Ok(r) => Ok(r),
@ -403,10 +422,10 @@ where
Err(anyhow!(e))
}
}
} else if s.starts_with(&Format::Hex.prefix_str()) {
let s = match s.strip_prefix(&Format::Hex.prefix_str()) {
} else if data_as_text.starts_with(&Format::Hex.prefix_str()) {
let s = match data_as_text.strip_prefix(&Format::Hex.prefix_str()) {
Some(sr) => sr,
None => s,
None => &data_as_text,
};
match T::from_str_radix(s, 16) {
Ok(r) => Ok(r),
@ -415,10 +434,10 @@ where
Err(anyhow!(e))
}
}
} else if s.starts_with(&Format::Octal.prefix_str()) {
let s = match s.strip_prefix(&Format::Octal.prefix_str()) {
} else if data_as_text.starts_with(&Format::Octal.prefix_str()) {
let s = match data_as_text.strip_prefix(&Format::Octal.prefix_str()) {
Some(sr) => sr,
None => s,
None => &data_as_text,
};
match T::from_str_radix(s, 8) {
Ok(r) => Ok(r),
@ -427,10 +446,10 @@ where
Err(anyhow!(e))
}
}
} else if s.starts_with(&Format::Bin.prefix_str()) {
let s = match s.strip_prefix(&Format::Bin.prefix_str()) {
} else if data_as_text.starts_with(&Format::Bin.prefix_str()) {
let s = match data_as_text.strip_prefix(&Format::Bin.prefix_str()) {
Some(sr) => sr,
None => s,
None => &data_as_text,
};
match T::from_str_radix(s, 2) {
Ok(r) => Ok(r),
@ -439,10 +458,10 @@ where
Err(anyhow!(e))
}
}
} else if s.starts_with(&Format::Base64.prefix_str()) {
let s = match s.strip_prefix(&Format::Base64.prefix_str()) {
} else if data_as_text.starts_with(&Format::Base64.prefix_str()) {
let s = match data_as_text.strip_prefix(&Format::Base64.prefix_str()) {
Some(sr) => sr,
None => s,
None => &data_as_text,
};
match fast32::base64::RFC4648.decode_str(s) {
Ok(r) => Ok(join::array_to_unsigned::<T>(&r)?),
@ -451,10 +470,10 @@ where
Err(anyhow!(e))
}
}
} else if s.starts_with(&Format::Base32.prefix_str()) {
let s = match s.strip_prefix(&Format::Base32.prefix_str()) {
} else if data_as_text.starts_with(&Format::Base32.prefix_str()) {
let s = match data_as_text.strip_prefix(&Format::Base32.prefix_str()) {
Some(sr) => sr,
None => s,
None => &data_as_text,
};
match fast32::base32::RFC4648.decode_str(s) {
Ok(r) => Ok(join::array_to_unsigned::<T>(&r)?),
@ -463,14 +482,13 @@ where
Err(anyhow!(e))
}
}
} else if s.starts_with(&Format::Raw.prefix_str()) {
let s = match s.strip_prefix(&Format::Raw.prefix_str()) {
Some(sr) => sr,
None => s,
};
Ok(join::array_to_unsigned(s.as_bytes())?)
} else {
let e = "could not determine the format of the value".to_string();
Err(anyhow!(e))
// what could go wrong with interpreting everything else as raw number input
let s: Vec<u8> = if data.len() > 2 && data[0] == 0x00 {
data.iter().skip(1).map(ToOwned::to_owned).collect()
} else {
data.as_ref().to_vec()
};
Ok(join::array_to_unsigned(&s)?)
}
}

16
src/main.rs
View File

@ -2,6 +2,7 @@ use std::io::{IsTerminal, Read, Write};
use std::process::exit;
use clap::{CommandFactory, Parser};
use numf::format::numf_parser_str;
mod format;
use crate::format::{numf_parser, Format};
@ -26,17 +27,24 @@ fn main() -> anyhow::Result<()> {
if !stdin.is_terminal() {
match stdin.lock().read_to_end(&mut stdin_nums) {
Ok(_) => {
let whole: String = match String::from_utf8(stdin_nums) {
let whole: String = match String::from_utf8(stdin_nums.clone()) {
Ok(r) => r,
Err(_) => {
let number = match numf_parser(&stdin_nums) {
Ok(n) => n,
Err(e) => {
eprintln!("{}", FormatOptions::command().render_usage());
eprintln!("stdin for this program only accepts text: {e:#?}");
exit(1);
eprintln!("could not parse number from stdin: {e:#?}");
exit(2);
}
};
options.push_number(number);
String::new()
}
};
let split = whole.split_whitespace();
for s in split {
let number = match numf_parser(s) {
let number = match numf_parser_str(s) {
Ok(n) => n,
Err(e) => {
eprintln!("{}", FormatOptions::command().render_usage());