cesrox/group/
codes.rs

1use std::str::FromStr;
2
3use crate::{
4    conversion::{adjust_with_num, b64_to_num},
5    derivation_code::DerivationCode,
6    error::Error,
7};
8
9#[derive(Debug, PartialEq, Eq)]
10pub enum GroupCode {
11    IndexedControllerSignatures(u16),
12    IndexedWitnessSignatures(u16),
13    NontransferableReceiptCouples(u16),
14    // Composed Base64 couple, snu+dig of given delegators or issuers event
15    SealSourceCouples(u16),
16    FirstSeenReplyCouples(u16),
17    TransferableIndexedSigGroups(u16),
18    LastEstSignaturesGroups(u16),
19    Frame(u16),
20    #[cfg(feature = "cesr-proof")]
21    PathedMaterialQuadruple(u16),
22}
23
24impl DerivationCode for GroupCode {
25    fn value_size(&self) -> usize {
26        0
27    }
28
29    fn soft_size(&self) -> usize {
30        2
31    }
32
33    fn hard_size(&self) -> usize {
34        2
35    }
36
37    fn to_str(&self) -> String {
38        let (code, count) = match self {
39            GroupCode::IndexedControllerSignatures(count) => ("-A", count),
40            GroupCode::IndexedWitnessSignatures(count) => ("-B", count),
41            GroupCode::NontransferableReceiptCouples(count) => ("-C", count),
42            GroupCode::FirstSeenReplyCouples(count) => ("-E", count),
43            GroupCode::TransferableIndexedSigGroups(count) => ("-F", count),
44            GroupCode::SealSourceCouples(count) => ("-G", count),
45            GroupCode::LastEstSignaturesGroups(count) => ("-H", count),
46            GroupCode::Frame(len) => ("-V", len),
47            #[cfg(feature = "cesr-proof")]
48            GroupCode::PathedMaterialQuadruple(len) => ("-L", len),
49        };
50        [code, &adjust_with_num(count.to_owned(), self.soft_size())].join("")
51    }
52}
53
54impl FromStr for GroupCode {
55    type Err = Error;
56
57    fn from_str(s: &str) -> Result<Self, Self::Err> {
58        let code = s.get(..2).ok_or(Error::EmptyCodeError)?;
59        let count_part = s.get(2..4).ok_or(Error::EmptyCodeError)?;
60        let count = b64_to_num(count_part.as_bytes())?;
61        match code {
62            "-A" => Ok(Self::IndexedControllerSignatures(count)),
63            "-B" => Ok(Self::IndexedWitnessSignatures(count)),
64            "-C" => Ok(Self::NontransferableReceiptCouples(count)),
65            "-D" => todo!(),
66            "-E" => Ok(Self::FirstSeenReplyCouples(count)),
67            "-F" => Ok(Self::TransferableIndexedSigGroups(count)),
68            // todo why not in cesr docs?
69            "-H" => Ok(Self::LastEstSignaturesGroups(count)),
70            // todo why not in cesr docs?
71            "-G" => Ok(Self::SealSourceCouples(count)),
72            // todo why not in cesr-proof docs?
73            #[cfg(feature = "cesr-proof")]
74            "-L" => Ok(Self::PathedMaterialQuadruple(count)),
75            "-U" => todo!(),
76            "-V" => Ok(Self::Frame(count)),
77            "-W" => todo!(),
78            "-X" => todo!(),
79            "-Y" => todo!(),
80            "-Z" => todo!(),
81            _ => Err(Error::UnknownCodeError),
82        }
83    }
84}
85
86#[test]
87pub fn test_group_codes_to_str() -> Result<(), Error> {
88    assert_eq!(GroupCode::IndexedControllerSignatures(3).to_str(), "-AAD");
89    assert_eq!(GroupCode::IndexedWitnessSignatures(30).to_str(), "-BAe");
90    assert_eq!(
91        GroupCode::NontransferableReceiptCouples(100).to_str(),
92        "-CBk"
93    );
94    assert_eq!(GroupCode::FirstSeenReplyCouples(127).to_str(), "-EB_");
95    assert_eq!(
96        GroupCode::TransferableIndexedSigGroups(4095).to_str(),
97        "-F__"
98    );
99    assert_eq!(GroupCode::SealSourceCouples(0).to_str(), "-GAA");
100    assert_eq!(GroupCode::Frame(1000).to_str(), "-VPo");
101    Ok(())
102}
103
104#[test]
105pub fn test_group_codes_from_str() -> Result<(), Error> {
106    assert_eq!(GroupCode::IndexedControllerSignatures(3), "-AAD".parse()?);
107    assert_eq!(GroupCode::IndexedWitnessSignatures(30), "-BAe".parse()?);
108    assert_eq!(
109        GroupCode::NontransferableReceiptCouples(100),
110        "-CBk".parse()?
111    );
112    assert_eq!(GroupCode::FirstSeenReplyCouples(127), "-EB_".parse()?);
113    assert_eq!(
114        GroupCode::TransferableIndexedSigGroups(4095),
115        "-F__".parse()?
116    );
117    assert_eq!(GroupCode::SealSourceCouples(0), "-GAA".parse()?);
118    assert_eq!(GroupCode::Frame(1000), "-VPo".parse()?);
119    Ok(())
120}
cesrox/group/codes.rs

cesrox/group/
codes.rs
