jid: Factorize length check for shorter code
This commit is contained in:
parent
cf25bd3fee
commit
2a3d393ad5
1 changed files with 33 additions and 73 deletions
106
jid/src/inner.rs
106
jid/src/inner.rs
|
@ -13,10 +13,19 @@
|
|||
use crate::JidParseError as Error;
|
||||
use core::num::NonZeroU16;
|
||||
use memchr::memchr;
|
||||
use std::borrow::Cow;
|
||||
use std::str::FromStr;
|
||||
use stringprep::{nameprep, nodeprep, resourceprep};
|
||||
|
||||
fn length_check(len: usize, error_empty: Error, error_too_long: Error) -> Result<(), Error> {
|
||||
if len == 0 {
|
||||
Err(error_empty)
|
||||
} else if len > 1023 {
|
||||
Err(error_too_long)
|
||||
} else {
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
|
||||
pub(crate) struct InnerJid {
|
||||
pub(crate) normalized: String,
|
||||
|
@ -37,93 +46,44 @@ impl InnerJid {
|
|||
let normalized = match (orig_at, orig_slash) {
|
||||
(Some(at), Some(slash)) => {
|
||||
let node = nodeprep(&unnormalized[..at]).map_err(|_| Error::NodePrep)?;
|
||||
if node.len() == 0 {
|
||||
return Err(Error::EmptyNode);
|
||||
}
|
||||
if node.len() > 1023 {
|
||||
return Err(Error::NodeTooLong);
|
||||
}
|
||||
length_check(node.len(), Error::EmptyNode, Error::NodeTooLong)?;
|
||||
|
||||
let domain = nameprep(&unnormalized[at + 1..slash]).map_err(|_| Error::NamePrep)?;
|
||||
if domain.len() == 0 {
|
||||
return Err(Error::NoDomain);
|
||||
}
|
||||
if domain.len() > 1023 {
|
||||
return Err(Error::DomainTooLong);
|
||||
}
|
||||
length_check(domain.len(), Error::NoDomain, Error::DomainTooLong)?;
|
||||
|
||||
let resource =
|
||||
resourceprep(&unnormalized[slash + 1..]).map_err(|_| Error::ResourcePrep)?;
|
||||
if resource.len() == 0 {
|
||||
return Err(Error::EmptyResource);
|
||||
}
|
||||
if resource.len() > 1023 {
|
||||
return Err(Error::ResourceTooLong);
|
||||
}
|
||||
match (node, domain, resource) {
|
||||
(Cow::Borrowed(_), Cow::Borrowed(_), Cow::Borrowed(_)) => {
|
||||
unnormalized.to_owned()
|
||||
}
|
||||
(node, domain, resource) => {
|
||||
orig_at = Some(node.len());
|
||||
orig_slash = Some(node.len() + domain.len() + 1);
|
||||
format!("{node}@{domain}/{resource}")
|
||||
}
|
||||
}
|
||||
length_check(resource.len(), Error::EmptyResource, Error::ResourceTooLong)?;
|
||||
|
||||
orig_at = Some(node.len());
|
||||
orig_slash = Some(node.len() + domain.len() + 1);
|
||||
format!("{node}@{domain}/{resource}")
|
||||
}
|
||||
(Some(at), None) => {
|
||||
let node = nodeprep(&unnormalized[..at]).map_err(|_| Error::NodePrep)?;
|
||||
if node.len() == 0 {
|
||||
return Err(Error::EmptyNode);
|
||||
}
|
||||
if node.len() > 1023 {
|
||||
return Err(Error::NodeTooLong);
|
||||
}
|
||||
length_check(node.len(), Error::EmptyNode, Error::NodeTooLong)?;
|
||||
|
||||
let domain = nameprep(&unnormalized[at + 1..]).map_err(|_| Error::NamePrep)?;
|
||||
if domain.len() == 0 {
|
||||
return Err(Error::NoDomain);
|
||||
}
|
||||
if domain.len() > 1023 {
|
||||
return Err(Error::DomainTooLong);
|
||||
}
|
||||
match (node, domain) {
|
||||
(Cow::Borrowed(_), Cow::Borrowed(_)) => unnormalized.to_owned(),
|
||||
(node, domain) => {
|
||||
orig_at = Some(node.len());
|
||||
format!("{node}@{domain}")
|
||||
}
|
||||
}
|
||||
length_check(domain.len(), Error::NoDomain, Error::DomainTooLong)?;
|
||||
|
||||
orig_at = Some(node.len());
|
||||
format!("{node}@{domain}")
|
||||
}
|
||||
(None, Some(slash)) => {
|
||||
let domain = nameprep(&unnormalized[..slash]).map_err(|_| Error::NamePrep)?;
|
||||
if domain.len() == 0 {
|
||||
return Err(Error::NoDomain);
|
||||
}
|
||||
if domain.len() > 1023 {
|
||||
return Err(Error::DomainTooLong);
|
||||
}
|
||||
length_check(domain.len(), Error::NoDomain, Error::DomainTooLong)?;
|
||||
|
||||
let resource =
|
||||
resourceprep(&unnormalized[slash + 1..]).map_err(|_| Error::ResourcePrep)?;
|
||||
if resource.len() == 0 {
|
||||
return Err(Error::EmptyResource);
|
||||
}
|
||||
if resource.len() > 1023 {
|
||||
return Err(Error::ResourceTooLong);
|
||||
}
|
||||
match (domain, resource) {
|
||||
(Cow::Borrowed(_), Cow::Borrowed(_)) => unnormalized.to_owned(),
|
||||
(domain, resource) => {
|
||||
orig_slash = Some(domain.len());
|
||||
format!("{domain}/{resource}")
|
||||
}
|
||||
}
|
||||
length_check(resource.len(), Error::EmptyResource, Error::ResourceTooLong)?;
|
||||
|
||||
orig_slash = Some(domain.len());
|
||||
format!("{domain}/{resource}")
|
||||
}
|
||||
(None, None) => {
|
||||
let domain = nameprep(unnormalized).map_err(|_| Error::NamePrep)?;
|
||||
if domain.len() == 0 {
|
||||
return Err(Error::NoDomain);
|
||||
}
|
||||
if domain.len() > 1023 {
|
||||
return Err(Error::DomainTooLong);
|
||||
}
|
||||
length_check(domain.len(), Error::NoDomain, Error::DomainTooLong)?;
|
||||
|
||||
domain.into_owned()
|
||||
}
|
||||
};
|
||||
|
|
Loading…
Reference in a new issue