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escapei.rs
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escapei.rs
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//! Manage xml character escapes
use memchr::{memchr2_iter, memchr3_iter};
use std::borrow::Cow;
use std::ops::Range;
use crate::utils::MergeIter;
#[cfg(test)]
use pretty_assertions::assert_eq;
/// Error for XML escape / unescape.
#[derive(Clone, Debug)]
pub enum EscapeError {
/// Entity with Null character
EntityWithNull(Range<usize>),
/// Unrecognized escape symbol
UnrecognizedSymbol(Range<usize>, String),
/// Cannot find `;` after `&`
UnterminatedEntity(Range<usize>),
/// Cannot convert Hexa to utf8
TooLongHexadecimal,
/// Character is not a valid hexadecimal value
InvalidHexadecimal(char),
/// Cannot convert decimal to hexa
TooLongDecimal,
/// Character is not a valid decimal value
InvalidDecimal(char),
/// Not a valid unicode codepoint
InvalidCodepoint(u32),
}
impl std::fmt::Display for EscapeError {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
match self {
EscapeError::EntityWithNull(e) => write!(
f,
"Error while escaping character at range {:?}: Null character entity not allowed",
e
),
EscapeError::UnrecognizedSymbol(rge, res) => write!(
f,
"Error while escaping character at range {:?}: Unrecognized escape symbol: {:?}",
rge, res
),
EscapeError::UnterminatedEntity(e) => write!(
f,
"Error while escaping character at range {:?}: Cannot find ';' after '&'",
e
),
EscapeError::TooLongHexadecimal => write!(f, "Cannot convert hexadecimal to utf8"),
EscapeError::InvalidHexadecimal(e) => {
write!(f, "'{}' is not a valid hexadecimal character", e)
}
EscapeError::TooLongDecimal => write!(f, "Cannot convert decimal to utf8"),
EscapeError::InvalidDecimal(e) => write!(f, "'{}' is not a valid decimal character", e),
EscapeError::InvalidCodepoint(n) => write!(f, "'{}' is not a valid codepoint", n),
}
}
}
impl std::error::Error for EscapeError {}
/// Escapes an `&str` and replaces all xml special characters (`<`, `>`, `&`, `'`, `"`)
/// with their corresponding xml escaped value.
///
/// This function performs following replacements:
///
/// | Character | Replacement
/// |-----------|------------
/// | `<` | `<`
/// | `>` | `>`
/// | `&` | `&`
/// | `'` | `'`
/// | `"` | `"`
pub fn escape(raw: &str) -> Cow<str> {
let bytes = raw.as_bytes();
_escape(
raw,
MergeIter::new(
memchr3_iter(b'<', b'>', b'&', bytes),
memchr2_iter(b'\'', b'"', bytes),
),
)
}
/// Escapes an `&str` and replaces xml special characters (`<`, `>`, `&`)
/// with their corresponding xml escaped value.
///
/// Should only be used for escaping text content. In XML text content, it is allowed
/// (though not recommended) to leave the quote special characters `"` and `'` unescaped.
///
/// This function performs following replacements:
///
/// | Character | Replacement
/// |-----------|------------
/// | `<` | `<`
/// | `>` | `>`
/// | `&` | `&`
pub fn partial_escape(raw: &str) -> Cow<str> {
_escape(raw, memchr3_iter(b'<', b'>', b'&', raw.as_bytes()))
}
/// Escapes an `&str` and replaces a subset of xml special characters (`<`, `>`,
/// `&`, `'`, `"`) with their corresponding xml escaped value.
pub(crate) fn _escape<It>(raw: &str, escapes: It) -> Cow<str>
where
It: Iterator<Item = usize>,
{
let bytes = raw.as_bytes();
let mut escaped = None;
let mut last_pos = 0;
for i in escapes {
// If we have an escape, the escaped string will be at least some larger than the raw string,
// reserve a little more space, so we might not resize at all if only a few escapes are found.
let escaped = escaped.get_or_insert_with(|| String::with_capacity(raw.len() + 64));
let byte = bytes[i];
// SAFETY: the escapes iterator should only return indexes of bytes we know how to escape.
// if one of those bytes are found, it _must_ be a complete character, so `i` must be a
// character boundary.
// last_pos will only be either 0 or i+1, and all supported chars are one byte long,
// last_pos will also always be at a char boundary
escaped.push_str(&raw[last_pos..i]);
match byte {
b'<' => escaped.push_str("<"),
b'>' => escaped.push_str(">"),
b'\'' => escaped.push_str("'"),
b'&' => escaped.push_str("&"),
b'"' => escaped.push_str("""),
// This set of escapes handles characters that should be escaped
// in elements of xs:lists, because those characters works as
// delimiters of list elements
b'\t' => escaped.push_str("	"),
b'\n' => escaped.push_str(" "),
b'\r' => escaped.push_str(" "),
b' ' => escaped.push_str(" "),
_ => unreachable!(
"Only '<', '>','\', '&', '\"', '\\t', '\\r', '\\n', and ' ' are escaped"
),
}
last_pos = i + 1;
}
if let Some(mut escaped) = escaped {
escaped.push_str(&raw[last_pos..]);
Cow::Owned(escaped)
} else {
Cow::Borrowed(raw)
}
}
/// Unescape an `&str` and replaces all xml escaped characters (`&...;`) into
/// their corresponding value.
///
/// If feature [`escape-html`] is enabled, then recognizes all [HTML5 escapes].
///
/// [`escape-html`]: ../index.html#escape-html
/// [HTML5 escapes]: https://dev.w3.org/html5/html-author/charref
pub fn unescape(raw: &str) -> Result<Cow<str>, EscapeError> {
unescape_with(raw, |_| None)
}
/// Unescape an `&str` and replaces all xml escaped characters (`&...;`) into
/// their corresponding value, using a resolver function for custom entities.
///
/// If feature [`escape-html`] is enabled, then recognizes all [HTML5 escapes].
///
/// [`escape-html`]: ../index.html#escape-html
/// [HTML5 escapes]: https://dev.w3.org/html5/html-author/charref
pub fn unescape_with<'input, 'entity, F>(
raw: &'input str,
mut resolve_entity: F,
) -> Result<Cow<'input, str>, EscapeError>
where
// the lifetime of the output comes from a capture or is `'static`
F: FnMut(&str) -> Option<&'entity str>,
{
let bytes = raw.as_bytes();
let mut unescaped = None;
let mut last_end = 0;
let mut iter = memchr2_iter(b'&', b';', bytes);
while let Some(start) = iter.by_ref().find(|p| bytes[*p] == b'&') {
match iter.next() {
Some(end) if bytes[end] == b';' => {
// append valid data
let unescaped = unescaped.get_or_insert_with(|| String::with_capacity(raw.len()));
unescaped.push_str(&raw[last_end..start]);
// search for character correctness
let pat = &raw[start + 1..end];
if let Some(entity) = pat.strip_prefix('#') {
let codepoint = parse_number(entity, start..end)?;
unescaped.push(codepoint);
} else if let Some(value) = named_entity(pat) {
unescaped.push_str(value);
} else if let Some(value) = resolve_entity(pat) {
unescaped.push_str(value);
} else {
return Err(EscapeError::UnrecognizedSymbol(
start + 1..end,
pat.to_string(),
));
}
last_end = end + 1;
}
_ => return Err(EscapeError::UnterminatedEntity(start..raw.len())),
}
}
if let Some(mut unescaped) = unescaped {
if let Some(raw) = raw.get(last_end..) {
unescaped.push_str(raw);
}
Ok(Cow::Owned(unescaped))
} else {
Ok(Cow::Borrowed(raw))
}
}
#[cfg(not(feature = "escape-html"))]
fn named_entity(name: &str) -> Option<&str> {
// match over strings are not allowed in const functions
let s = match name.as_bytes() {
b"lt" => "<",
b"gt" => ">",
b"amp" => "&",
b"apos" => "'",
b"quot" => "\"",
_ => return None,
};
Some(s)
}
#[cfg(feature = "escape-html")]
fn named_entity(name: &str) -> Option<&str> {
// imported from https://dev.w3.org/html5/html-author/charref
// match over strings are not allowed in const functions
//TODO: automate up-to-dating using https://html.spec.whatwg.org/entities.json
let s = match name.as_bytes() {
b"Tab" => "\u{09}",
b"NewLine" => "\u{0A}",
b"excl" => "\u{21}",
b"quot" | b"QUOT" => "\u{22}",
b"num" => "\u{23}",
b"dollar" => "\u{24}",
b"percnt" => "\u{25}",
b"amp" | b"AMP" => "\u{26}",
b"apos" => "\u{27}",
b"lpar" => "\u{28}",
b"rpar" => "\u{29}",
b"ast" | b"midast" => "\u{2A}",
b"plus" => "\u{2B}",
b"comma" => "\u{2C}",
b"period" => "\u{2E}",
b"sol" => "\u{2F}",
b"colon" => "\u{3A}",
b"semi" => "\u{3B}",
b"lt" | b"LT" => "\u{3C}",
b"equals" => "\u{3D}",
b"gt" | b"GT" => "\u{3E}",
b"quest" => "\u{3F}",
b"commat" => "\u{40}",
b"lsqb" | b"lbrack" => "\u{5B}",
b"bsol" => "\u{5C}",
b"rsqb" | b"rbrack" => "\u{5D}",
b"Hat" => "\u{5E}",
b"lowbar" => "\u{5F}",
b"grave" | b"DiacriticalGrave" => "\u{60}",
b"lcub" | b"lbrace" => "\u{7B}",
b"verbar" | b"vert" | b"VerticalLine" => "\u{7C}",
b"rcub" | b"rbrace" => "\u{7D}",
b"nbsp" | b"NonBreakingSpace" => "\u{A0}",
b"iexcl" => "\u{A1}",
b"cent" => "\u{A2}",
b"pound" => "\u{A3}",
b"curren" => "\u{A4}",
b"yen" => "\u{A5}",
b"brvbar" => "\u{A6}",
b"sect" => "\u{A7}",
b"Dot" | b"die" | b"DoubleDot" | b"uml" => "\u{A8}",
b"copy" | b"COPY" => "\u{A9}",
b"ordf" => "\u{AA}",
b"laquo" => "\u{AB}",
b"not" => "\u{AC}",
b"shy" => "\u{AD}",
b"reg" | b"circledR" | b"REG" => "\u{AE}",
b"macr" | b"OverBar" | b"strns" => "\u{AF}",
b"deg" => "\u{B0}",
b"plusmn" | b"pm" | b"PlusMinus" => "\u{B1}",
b"sup2" => "\u{B2}",
b"sup3" => "\u{B3}",
b"acute" | b"DiacriticalAcute" => "\u{B4}",
b"micro" => "\u{B5}",
b"para" => "\u{B6}",
b"middot" | b"centerdot" | b"CenterDot" => "\u{B7}",
b"cedil" | b"Cedilla" => "\u{B8}",
b"sup1" => "\u{B9}",
b"ordm" => "\u{BA}",
b"raquo" => "\u{BB}",
b"frac14" => "\u{BC}",
b"frac12" | b"half" => "\u{BD}",
b"frac34" => "\u{BE}",
b"iquest" => "\u{BF}",
b"Agrave" => "\u{C0}",
b"Aacute" => "\u{C1}",
b"Acirc" => "\u{C2}",
b"Atilde" => "\u{C3}",
b"Auml" => "\u{C4}",
b"Aring" => "\u{C5}",
b"AElig" => "\u{C6}",
b"Ccedil" => "\u{C7}",
b"Egrave" => "\u{C8}",
b"Eacute" => "\u{C9}",
b"Ecirc" => "\u{CA}",
b"Euml" => "\u{CB}",
b"Igrave" => "\u{CC}",
b"Iacute" => "\u{CD}",
b"Icirc" => "\u{CE}",
b"Iuml" => "\u{CF}",
b"ETH" => "\u{D0}",
b"Ntilde" => "\u{D1}",
b"Ograve" => "\u{D2}",
b"Oacute" => "\u{D3}",
b"Ocirc" => "\u{D4}",
b"Otilde" => "\u{D5}",
b"Ouml" => "\u{D6}",
b"times" => "\u{D7}",
b"Oslash" => "\u{D8}",
b"Ugrave" => "\u{D9}",
b"Uacute" => "\u{DA}",
b"Ucirc" => "\u{DB}",
b"Uuml" => "\u{DC}",
b"Yacute" => "\u{DD}",
b"THORN" => "\u{DE}",
b"szlig" => "\u{DF}",
b"agrave" => "\u{E0}",
b"aacute" => "\u{E1}",
b"acirc" => "\u{E2}",
b"atilde" => "\u{E3}",
b"auml" => "\u{E4}",
b"aring" => "\u{E5}",
b"aelig" => "\u{E6}",
b"ccedil" => "\u{E7}",
b"egrave" => "\u{E8}",
b"eacute" => "\u{E9}",
b"ecirc" => "\u{EA}",
b"euml" => "\u{EB}",
b"igrave" => "\u{EC}",
b"iacute" => "\u{ED}",
b"icirc" => "\u{EE}",
b"iuml" => "\u{EF}",
b"eth" => "\u{F0}",
b"ntilde" => "\u{F1}",
b"ograve" => "\u{F2}",
b"oacute" => "\u{F3}",
b"ocirc" => "\u{F4}",
b"otilde" => "\u{F5}",
b"ouml" => "\u{F6}",
b"divide" | b"div" => "\u{F7}",
b"oslash" => "\u{F8}",
b"ugrave" => "\u{F9}",
b"uacute" => "\u{FA}",
b"ucirc" => "\u{FB}",
b"uuml" => "\u{FC}",
b"yacute" => "\u{FD}",
b"thorn" => "\u{FE}",
b"yuml" => "\u{FF}",
b"Amacr" => "\u{10}",
b"amacr" => "\u{10}",
b"Abreve" => "\u{10}",
b"abreve" => "\u{10}",
b"Aogon" => "\u{10}",
b"aogon" => "\u{10}",
b"Cacute" => "\u{10}",
b"cacute" => "\u{10}",
b"Ccirc" => "\u{10}",
b"ccirc" => "\u{10}",
b"Cdot" => "\u{10}",
b"cdot" => "\u{10}",
b"Ccaron" => "\u{10}",
b"ccaron" => "\u{10}",
b"Dcaron" => "\u{10}",
b"dcaron" => "\u{10}",
b"Dstrok" => "\u{11}",
b"dstrok" => "\u{11}",
b"Emacr" => "\u{11}",
b"emacr" => "\u{11}",
b"Edot" => "\u{11}",
b"edot" => "\u{11}",
b"Eogon" => "\u{11}",
b"eogon" => "\u{11}",
b"Ecaron" => "\u{11}",
b"ecaron" => "\u{11}",
b"Gcirc" => "\u{11}",
b"gcirc" => "\u{11}",
b"Gbreve" => "\u{11}",
b"gbreve" => "\u{11}",
b"Gdot" => "\u{12}",
b"gdot" => "\u{12}",
b"Gcedil" => "\u{12}",
b"Hcirc" => "\u{12}",
b"hcirc" => "\u{12}",
b"Hstrok" => "\u{12}",
b"hstrok" => "\u{12}",
b"Itilde" => "\u{12}",
b"itilde" => "\u{12}",
b"Imacr" => "\u{12}",
b"imacr" => "\u{12}",
b"Iogon" => "\u{12}",
b"iogon" => "\u{12}",
b"Idot" => "\u{13}",
b"imath" | b"inodot" => "\u{13}",
b"IJlig" => "\u{13}",
b"ijlig" => "\u{13}",
b"Jcirc" => "\u{13}",
b"jcirc" => "\u{13}",
b"Kcedil" => "\u{13}",
b"kcedil" => "\u{13}",
b"kgreen" => "\u{13}",
b"Lacute" => "\u{13}",
b"lacute" => "\u{13}",
b"Lcedil" => "\u{13}",
b"lcedil" => "\u{13}",
b"Lcaron" => "\u{13}",
b"lcaron" => "\u{13}",
b"Lmidot" => "\u{13}",
b"lmidot" => "\u{14}",
b"Lstrok" => "\u{14}",
b"lstrok" => "\u{14}",
b"Nacute" => "\u{14}",
b"nacute" => "\u{14}",
b"Ncedil" => "\u{14}",
b"ncedil" => "\u{14}",
b"Ncaron" => "\u{14}",
b"ncaron" => "\u{14}",
b"napos" => "\u{14}",
b"ENG" => "\u{14}",
b"eng" => "\u{14}",
b"Omacr" => "\u{14}",
b"omacr" => "\u{14}",
b"Odblac" => "\u{15}",
b"odblac" => "\u{15}",
b"OElig" => "\u{15}",
b"oelig" => "\u{15}",
b"Racute" => "\u{15}",
b"racute" => "\u{15}",
b"Rcedil" => "\u{15}",
b"rcedil" => "\u{15}",
b"Rcaron" => "\u{15}",
b"rcaron" => "\u{15}",
b"Sacute" => "\u{15}",
b"sacute" => "\u{15}",
b"Scirc" => "\u{15}",
b"scirc" => "\u{15}",
b"Scedil" => "\u{15}",
b"scedil" => "\u{15}",
b"Scaron" => "\u{16}",
b"scaron" => "\u{16}",
b"Tcedil" => "\u{16}",
b"tcedil" => "\u{16}",
b"Tcaron" => "\u{16}",
b"tcaron" => "\u{16}",
b"Tstrok" => "\u{16}",
b"tstrok" => "\u{16}",
b"Utilde" => "\u{16}",
b"utilde" => "\u{16}",
b"Umacr" => "\u{16}",
b"umacr" => "\u{16}",
b"Ubreve" => "\u{16}",
b"ubreve" => "\u{16}",
b"Uring" => "\u{16}",
b"uring" => "\u{16}",
b"Udblac" => "\u{17}",
b"udblac" => "\u{17}",
b"Uogon" => "\u{17}",
b"uogon" => "\u{17}",
b"Wcirc" => "\u{17}",
b"wcirc" => "\u{17}",
b"Ycirc" => "\u{17}",
b"ycirc" => "\u{17}",
b"Yuml" => "\u{17}",
b"Zacute" => "\u{17}",
b"zacute" => "\u{17}",
b"Zdot" => "\u{17}",
b"zdot" => "\u{17}",
b"Zcaron" => "\u{17}",
b"zcaron" => "\u{17}",
b"fnof" => "\u{19}",
b"imped" => "\u{1B}",
b"gacute" => "\u{1F}",
b"jmath" => "\u{23}",
b"circ" => "\u{2C}",
b"caron" | b"Hacek" => "\u{2C}",
b"breve" | b"Breve" => "\u{2D}",
b"dot" | b"DiacriticalDot" => "\u{2D}",
b"ring" => "\u{2D}",
b"ogon" => "\u{2D}",
b"tilde" | b"DiacriticalTilde" => "\u{2D}",
b"dblac" | b"DiacriticalDoubleAcute" => "\u{2D}",
b"DownBreve" => "\u{31}",
b"UnderBar" => "\u{33}",
b"Alpha" => "\u{39}",
b"Beta" => "\u{39}",
b"Gamma" => "\u{39}",
b"Delta" => "\u{39}",
b"Epsilon" => "\u{39}",
b"Zeta" => "\u{39}",
b"Eta" => "\u{39}",
b"Theta" => "\u{39}",
b"Iota" => "\u{39}",
b"Kappa" => "\u{39}",
b"Lambda" => "\u{39}",
b"Mu" => "\u{39}",
b"Nu" => "\u{39}",
b"Xi" => "\u{39}",
b"Omicron" => "\u{39}",
b"Pi" => "\u{3A}",
b"Rho" => "\u{3A}",
b"Sigma" => "\u{3A}",
b"Tau" => "\u{3A}",
b"Upsilon" => "\u{3A}",
b"Phi" => "\u{3A}",
b"Chi" => "\u{3A}",
b"Psi" => "\u{3A}",
b"Omega" => "\u{3A}",
b"alpha" => "\u{3B}",
b"beta" => "\u{3B}",
b"gamma" => "\u{3B}",
b"delta" => "\u{3B}",
b"epsiv" | b"varepsilon" | b"epsilon" => "\u{3B}",
b"zeta" => "\u{3B}",
b"eta" => "\u{3B}",
b"theta" => "\u{3B}",
b"iota" => "\u{3B}",
b"kappa" => "\u{3B}",
b"lambda" => "\u{3B}",
b"mu" => "\u{3B}",
b"nu" => "\u{3B}",
b"xi" => "\u{3B}",
b"omicron" => "\u{3B}",
b"pi" => "\u{3C}",
b"rho" => "\u{3C}",
b"sigmav" | b"varsigma" | b"sigmaf" => "\u{3C}",
b"sigma" => "\u{3C}",
b"tau" => "\u{3C}",
b"upsi" | b"upsilon" => "\u{3C}",
b"phi" | b"phiv" | b"varphi" => "\u{3C}",
b"chi" => "\u{3C}",
b"psi" => "\u{3C}",
b"omega" => "\u{3C}",
b"thetav" | b"vartheta" | b"thetasym" => "\u{3D}",
b"Upsi" | b"upsih" => "\u{3D}",
b"straightphi" => "\u{3D}",
b"piv" | b"varpi" => "\u{3D}",
b"Gammad" => "\u{3D}",
b"gammad" | b"digamma" => "\u{3D}",
b"kappav" | b"varkappa" => "\u{3F}",
b"rhov" | b"varrho" => "\u{3F}",
b"epsi" | b"straightepsilon" => "\u{3F}",
b"bepsi" | b"backepsilon" => "\u{3F}",
b"IOcy" => "\u{40}",
b"DJcy" => "\u{40}",
b"GJcy" => "\u{40}",
b"Jukcy" => "\u{40}",
b"DScy" => "\u{40}",
b"Iukcy" => "\u{40}",
b"YIcy" => "\u{40}",
b"Jsercy" => "\u{40}",
b"LJcy" => "\u{40}",
b"NJcy" => "\u{40}",
b"TSHcy" => "\u{40}",
b"KJcy" => "\u{40}",
b"Ubrcy" => "\u{40}",
b"DZcy" => "\u{40}",
b"Acy" => "\u{41}",
b"Bcy" => "\u{41}",
b"Vcy" => "\u{41}",
b"Gcy" => "\u{41}",
b"Dcy" => "\u{41}",
b"IEcy" => "\u{41}",
b"ZHcy" => "\u{41}",
b"Zcy" => "\u{41}",
b"Icy" => "\u{41}",
b"Jcy" => "\u{41}",
b"Kcy" => "\u{41}",
b"Lcy" => "\u{41}",
b"Mcy" => "\u{41}",
b"Ncy" => "\u{41}",
b"Ocy" => "\u{41}",
b"Pcy" => "\u{41}",
b"Rcy" => "\u{42}",
b"Scy" => "\u{42}",
b"Tcy" => "\u{42}",
b"Ucy" => "\u{42}",
b"Fcy" => "\u{42}",
b"KHcy" => "\u{42}",
b"TScy" => "\u{42}",
b"CHcy" => "\u{42}",
b"SHcy" => "\u{42}",
b"SHCHcy" => "\u{42}",
b"HARDcy" => "\u{42}",
b"Ycy" => "\u{42}",
b"SOFTcy" => "\u{42}",
b"Ecy" => "\u{42}",
b"YUcy" => "\u{42}",
b"YAcy" => "\u{42}",
b"acy" => "\u{43}",
b"bcy" => "\u{43}",
b"vcy" => "\u{43}",
b"gcy" => "\u{43}",
b"dcy" => "\u{43}",
b"iecy" => "\u{43}",
b"zhcy" => "\u{43}",
b"zcy" => "\u{43}",
b"icy" => "\u{43}",
b"jcy" => "\u{43}",
b"kcy" => "\u{43}",
b"lcy" => "\u{43}",
b"mcy" => "\u{43}",
b"ncy" => "\u{43}",
b"ocy" => "\u{43}",
b"pcy" => "\u{43}",
b"rcy" => "\u{44}",
b"scy" => "\u{44}",
b"tcy" => "\u{44}",
b"ucy" => "\u{44}",
b"fcy" => "\u{44}",
b"khcy" => "\u{44}",
b"tscy" => "\u{44}",
b"chcy" => "\u{44}",
b"shcy" => "\u{44}",
b"shchcy" => "\u{44}",
b"hardcy" => "\u{44}",
b"ycy" => "\u{44}",
b"softcy" => "\u{44}",
b"ecy" => "\u{44}",
b"yucy" => "\u{44}",
b"yacy" => "\u{44}",
b"iocy" => "\u{45}",
b"djcy" => "\u{45}",
b"gjcy" => "\u{45}",
b"jukcy" => "\u{45}",
b"dscy" => "\u{45}",
b"iukcy" => "\u{45}",
b"yicy" => "\u{45}",
b"jsercy" => "\u{45}",
b"ljcy" => "\u{45}",
b"njcy" => "\u{45}",
b"tshcy" => "\u{45}",
b"kjcy" => "\u{45}",
b"ubrcy" => "\u{45}",
b"dzcy" => "\u{45}",
b"ensp" => "\u{2002}",
b"emsp" => "\u{2003}",
b"emsp13" => "\u{2004}",
b"emsp14" => "\u{2005}",
b"numsp" => "\u{2007}",
b"puncsp" => "\u{2008}",
b"thinsp" | b"ThinSpace" => "\u{2009}",
b"hairsp" | b"VeryThinSpace" => "\u{200A}",
b"ZeroWidthSpace"
| b"NegativeVeryThinSpace"
| b"NegativeThinSpace"
| b"NegativeMediumSpace"
| b"NegativeThickSpace" => "\u{200B}",
b"zwnj" => "\u{200C}",
b"zwj" => "\u{200D}",
b"lrm" => "\u{200E}",
b"rlm" => "\u{200F}",
b"hyphen" | b"dash" => "\u{2010}",
b"ndash" => "\u{2013}",
b"mdash" => "\u{2014}",
b"horbar" => "\u{2015}",
b"Verbar" | b"Vert" => "\u{2016}",
b"lsquo" | b"OpenCurlyQuote" => "\u{2018}",
b"rsquo" | b"rsquor" | b"CloseCurlyQuote" => "\u{2019}",
b"lsquor" | b"sbquo" => "\u{201A}",
b"ldquo" | b"OpenCurlyDoubleQuote" => "\u{201C}",
b"rdquo" | b"rdquor" | b"CloseCurlyDoubleQuote" => "\u{201D}",
b"ldquor" | b"bdquo" => "\u{201E}",
b"dagger" => "\u{2020}",
b"Dagger" | b"ddagger" => "\u{2021}",
b"bull" | b"bullet" => "\u{2022}",
b"nldr" => "\u{2025}",
b"hellip" | b"mldr" => "\u{2026}",
b"permil" => "\u{2030}",
b"pertenk" => "\u{2031}",
b"prime" => "\u{2032}",
b"Prime" => "\u{2033}",
b"tprime" => "\u{2034}",
b"bprime" | b"backprime" => "\u{2035}",
b"lsaquo" => "\u{2039}",
b"rsaquo" => "\u{203A}",
b"oline" => "\u{203E}",
b"caret" => "\u{2041}",
b"hybull" => "\u{2043}",
b"frasl" => "\u{2044}",
b"bsemi" => "\u{204F}",
b"qprime" => "\u{2057}",
b"MediumSpace" => "\u{205F}",
b"NoBreak" => "\u{2060}",
b"ApplyFunction" | b"af" => "\u{2061}",
b"InvisibleTimes" | b"it" => "\u{2062}",
b"InvisibleComma" | b"ic" => "\u{2063}",
b"euro" => "\u{20AC}",
b"tdot" | b"TripleDot" => "\u{20DB}",
b"DotDot" => "\u{20DC}",
b"Copf" | b"complexes" => "\u{2102}",
b"incare" => "\u{2105}",
b"gscr" => "\u{210A}",
b"hamilt" | b"HilbertSpace" | b"Hscr" => "\u{210B}",
b"Hfr" | b"Poincareplane" => "\u{210C}",
b"quaternions" | b"Hopf" => "\u{210D}",
b"planckh" => "\u{210E}",
b"planck" | b"hbar" | b"plankv" | b"hslash" => "\u{210F}",
b"Iscr" | b"imagline" => "\u{2110}",
b"image" | b"Im" | b"imagpart" | b"Ifr" => "\u{2111}",
b"Lscr" | b"lagran" | b"Laplacetrf" => "\u{2112}",
b"ell" => "\u{2113}",
b"Nopf" | b"naturals" => "\u{2115}",
b"numero" => "\u{2116}",
b"copysr" => "\u{2117}",
b"weierp" | b"wp" => "\u{2118}",
b"Popf" | b"primes" => "\u{2119}",
b"rationals" | b"Qopf" => "\u{211A}",
b"Rscr" | b"realine" => "\u{211B}",
b"real" | b"Re" | b"realpart" | b"Rfr" => "\u{211C}",
b"reals" | b"Ropf" => "\u{211D}",
b"rx" => "\u{211E}",
b"trade" | b"TRADE" => "\u{2122}",
b"integers" | b"Zopf" => "\u{2124}",
b"ohm" => "\u{2126}",
b"mho" => "\u{2127}",
b"Zfr" | b"zeetrf" => "\u{2128}",
b"iiota" => "\u{2129}",
b"angst" => "\u{212B}",
b"bernou" | b"Bernoullis" | b"Bscr" => "\u{212C}",
b"Cfr" | b"Cayleys" => "\u{212D}",
b"escr" => "\u{212F}",
b"Escr" | b"expectation" => "\u{2130}",
b"Fscr" | b"Fouriertrf" => "\u{2131}",
b"phmmat" | b"Mellintrf" | b"Mscr" => "\u{2133}",
b"order" | b"orderof" | b"oscr" => "\u{2134}",
b"alefsym" | b"aleph" => "\u{2135}",
b"beth" => "\u{2136}",
b"gimel" => "\u{2137}",
b"daleth" => "\u{2138}",
b"CapitalDifferentialD" | b"DD" => "\u{2145}",
b"DifferentialD" | b"dd" => "\u{2146}",
b"ExponentialE" | b"exponentiale" | b"ee" => "\u{2147}",
b"ImaginaryI" | b"ii" => "\u{2148}",
b"frac13" => "\u{2153}",
b"frac23" => "\u{2154}",
b"frac15" => "\u{2155}",
b"frac25" => "\u{2156}",
b"frac35" => "\u{2157}",
b"frac45" => "\u{2158}",
b"frac16" => "\u{2159}",
b"frac56" => "\u{215A}",
b"frac18" => "\u{215B}",
b"frac38" => "\u{215C}",
b"frac58" => "\u{215D}",
b"frac78" => "\u{215E}",
b"larr" | b"leftarrow" | b"LeftArrow" | b"slarr" | b"ShortLeftArrow" => "\u{2190}",
b"uarr" | b"uparrow" | b"UpArrow" | b"ShortUpArrow" => "\u{2191}",
b"rarr" | b"rightarrow" | b"RightArrow" | b"srarr" | b"ShortRightArrow" => "\u{2192}",
b"darr" | b"downarrow" | b"DownArrow" | b"ShortDownArrow" => "\u{2193}",
b"harr" | b"leftrightarrow" | b"LeftRightArrow" => "\u{2194}",
b"varr" | b"updownarrow" | b"UpDownArrow" => "\u{2195}",
b"nwarr" | b"UpperLeftArrow" | b"nwarrow" => "\u{2196}",
b"nearr" | b"UpperRightArrow" | b"nearrow" => "\u{2197}",
b"searr" | b"searrow" | b"LowerRightArrow" => "\u{2198}",
b"swarr" | b"swarrow" | b"LowerLeftArrow" => "\u{2199}",
b"nlarr" | b"nleftarrow" => "\u{219A}",
b"nrarr" | b"nrightarrow" => "\u{219B}",
b"rarrw" | b"rightsquigarrow" => "\u{219D}",
b"Larr" | b"twoheadleftarrow" => "\u{219E}",
b"Uarr" => "\u{219F}",
b"Rarr" | b"twoheadrightarrow" => "\u{21A0}",
b"Darr" => "\u{21A1}",
b"larrtl" | b"leftarrowtail" => "\u{21A2}",
b"rarrtl" | b"rightarrowtail" => "\u{21A3}",
b"LeftTeeArrow" | b"mapstoleft" => "\u{21A4}",
b"UpTeeArrow" | b"mapstoup" => "\u{21A5}",
b"map" | b"RightTeeArrow" | b"mapsto" => "\u{21A6}",
b"DownTeeArrow" | b"mapstodown" => "\u{21A7}",
b"larrhk" | b"hookleftarrow" => "\u{21A9}",
b"rarrhk" | b"hookrightarrow" => "\u{21AA}",
b"larrlp" | b"looparrowleft" => "\u{21AB}",
b"rarrlp" | b"looparrowright" => "\u{21AC}",
b"harrw" | b"leftrightsquigarrow" => "\u{21AD}",
b"nharr" | b"nleftrightarrow" => "\u{21AE}",
b"lsh" | b"Lsh" => "\u{21B0}",
b"rsh" | b"Rsh" => "\u{21B1}",
b"ldsh" => "\u{21B2}",
b"rdsh" => "\u{21B3}",
b"crarr" => "\u{21B5}",
b"cularr" | b"curvearrowleft" => "\u{21B6}",
b"curarr" | b"curvearrowright" => "\u{21B7}",
b"olarr" | b"circlearrowleft" => "\u{21BA}",
b"orarr" | b"circlearrowright" => "\u{21BB}",
b"lharu" | b"LeftVector" | b"leftharpoonup" => "\u{21BC}",
b"lhard" | b"leftharpoondown" | b"DownLeftVector" => "\u{21BD}",
b"uharr" | b"upharpoonright" | b"RightUpVector" => "\u{21BE}",
b"uharl" | b"upharpoonleft" | b"LeftUpVector" => "\u{21BF}",
b"rharu" | b"RightVector" | b"rightharpoonup" => "\u{21C0}",
b"rhard" | b"rightharpoondown" | b"DownRightVector" => "\u{21C1}",
b"dharr" | b"RightDownVector" | b"downharpoonright" => "\u{21C2}",
b"dharl" | b"LeftDownVector" | b"downharpoonleft" => "\u{21C3}",
b"rlarr" | b"rightleftarrows" | b"RightArrowLeftArrow" => "\u{21C4}",
b"udarr" | b"UpArrowDownArrow" => "\u{21C5}",
b"lrarr" | b"leftrightarrows" | b"LeftArrowRightArrow" => "\u{21C6}",
b"llarr" | b"leftleftarrows" => "\u{21C7}",
b"uuarr" | b"upuparrows" => "\u{21C8}",
b"rrarr" | b"rightrightarrows" => "\u{21C9}",
b"ddarr" | b"downdownarrows" => "\u{21CA}",
b"lrhar" | b"ReverseEquilibrium" | b"leftrightharpoons" => "\u{21CB}",
b"rlhar" | b"rightleftharpoons" | b"Equilibrium" => "\u{21CC}",
b"nlArr" | b"nLeftarrow" => "\u{21CD}",
b"nhArr" | b"nLeftrightarrow" => "\u{21CE}",
b"nrArr" | b"nRightarrow" => "\u{21CF}",
b"lArr" | b"Leftarrow" | b"DoubleLeftArrow" => "\u{21D0}",
b"uArr" | b"Uparrow" | b"DoubleUpArrow" => "\u{21D1}",
b"rArr" | b"Rightarrow" | b"Implies" | b"DoubleRightArrow" => "\u{21D2}",
b"dArr" | b"Downarrow" | b"DoubleDownArrow" => "\u{21D3}",
b"hArr" | b"Leftrightarrow" | b"DoubleLeftRightArrow" | b"iff" => "\u{21D4}",
b"vArr" | b"Updownarrow" | b"DoubleUpDownArrow" => "\u{21D5}",
b"nwArr" => "\u{21D6}",
b"neArr" => "\u{21D7}",
b"seArr" => "\u{21D8}",
b"swArr" => "\u{21D9}",
b"lAarr" | b"Lleftarrow" => "\u{21DA}",
b"rAarr" | b"Rrightarrow" => "\u{21DB}",
b"zigrarr" => "\u{21DD}",
b"larrb" | b"LeftArrowBar" => "\u{21E4}",
b"rarrb" | b"RightArrowBar" => "\u{21E5}",
b"duarr" | b"DownArrowUpArrow" => "\u{21F5}",
b"loarr" => "\u{21FD}",
b"roarr" => "\u{21FE}",
b"hoarr" => "\u{21FF}",
b"forall" | b"ForAll" => "\u{2200}",
b"comp" | b"complement" => "\u{2201}",
b"part" | b"PartialD" => "\u{2202}",
b"exist" | b"Exists" => "\u{2203}",
b"nexist" | b"NotExists" | b"nexists" => "\u{2204}",
b"empty" | b"emptyset" | b"emptyv" | b"varnothing" => "\u{2205}",
b"nabla" | b"Del" => "\u{2207}",
b"isin" | b"isinv" | b"Element" | b"in" => "\u{2208}",
b"notin" | b"NotElement" | b"notinva" => "\u{2209}",
b"niv" | b"ReverseElement" | b"ni" | b"SuchThat" => "\u{220B}",
b"notni" | b"notniva" | b"NotReverseElement" => "\u{220C}",
b"prod" | b"Product" => "\u{220F}",
b"coprod" | b"Coproduct" => "\u{2210}",
b"sum" | b"Sum" => "\u{2211}",
b"minus" => "\u{2212}",
b"mnplus" | b"mp" | b"MinusPlus" => "\u{2213}",
b"plusdo" | b"dotplus" => "\u{2214}",
b"setmn" | b"setminus" | b"Backslash" | b"ssetmn" | b"smallsetminus" => "\u{2216}",
b"lowast" => "\u{2217}",
b"compfn" | b"SmallCircle" => "\u{2218}",
b"radic" | b"Sqrt" => "\u{221A}",
b"prop" | b"propto" | b"Proportional" | b"vprop" | b"varpropto" => "\u{221D}",
b"infin" => "\u{221E}",
b"angrt" => "\u{221F}",
b"ang" | b"angle" => "\u{2220}",
b"angmsd" | b"measuredangle" => "\u{2221}",
b"angsph" => "\u{2222}",
b"mid" | b"VerticalBar" | b"smid" | b"shortmid" => "\u{2223}",
b"nmid" | b"NotVerticalBar" | b"nsmid" | b"nshortmid" => "\u{2224}",
b"par" | b"parallel" | b"DoubleVerticalBar" | b"spar" | b"shortparallel" => "\u{2225}",
b"npar" | b"nparallel" | b"NotDoubleVerticalBar" | b"nspar" | b"nshortparallel" => {
"\u{2226}"
}
b"and" | b"wedge" => "\u{2227}",
b"or" | b"vee" => "\u{2228}",
b"cap" => "\u{2229}",
b"cup" => "\u{222A}",
b"int" | b"Integral" => "\u{222B}",
b"Int" => "\u{222C}",
b"tint" | b"iiint" => "\u{222D}",
b"conint" | b"oint" | b"ContourIntegral" => "\u{222E}",
b"Conint" | b"DoubleContourIntegral" => "\u{222F}",
b"Cconint" => "\u{2230}",
b"cwint" => "\u{2231}",
b"cwconint" | b"ClockwiseContourIntegral" => "\u{2232}",
b"awconint" | b"CounterClockwiseContourIntegral" => "\u{2233}",
b"there4" | b"therefore" | b"Therefore" => "\u{2234}",
b"becaus" | b"because" | b"Because" => "\u{2235}",
b"ratio" => "\u{2236}",
b"Colon" | b"Proportion" => "\u{2237}",
b"minusd" | b"dotminus" => "\u{2238}",
b"mDDot" => "\u{223A}",
b"homtht" => "\u{223B}",
b"sim" | b"Tilde" | b"thksim" | b"thicksim" => "\u{223C}",
b"bsim" | b"backsim" => "\u{223D}",
b"ac" | b"mstpos" => "\u{223E}",
b"acd" => "\u{223F}",
b"wreath" | b"VerticalTilde" | b"wr" => "\u{2240}",
b"nsim" | b"NotTilde" => "\u{2241}",
b"esim" | b"EqualTilde" | b"eqsim" => "\u{2242}",
b"sime" | b"TildeEqual" | b"simeq" => "\u{2243}",
b"nsime" | b"nsimeq" | b"NotTildeEqual" => "\u{2244}",
b"cong" | b"TildeFullEqual" => "\u{2245}",
b"simne" => "\u{2246}",
b"ncong" | b"NotTildeFullEqual" => "\u{2247}",
b"asymp" | b"ap" | b"TildeTilde" | b"approx" | b"thkap" | b"thickapprox" => "\u{2248}",
b"nap" | b"NotTildeTilde" | b"napprox" => "\u{2249}",
b"ape" | b"approxeq" => "\u{224A}",
b"apid" => "\u{224B}",
b"bcong" | b"backcong" => "\u{224C}",
b"asympeq" | b"CupCap" => "\u{224D}",
b"bump" | b"HumpDownHump" | b"Bumpeq" => "\u{224E}",
b"bumpe" | b"HumpEqual" | b"bumpeq" => "\u{224F}",
b"esdot" | b"DotEqual" | b"doteq" => "\u{2250}",
b"eDot" | b"doteqdot" => "\u{2251}",
b"efDot" | b"fallingdotseq" => "\u{2252}",
b"erDot" | b"risingdotseq" => "\u{2253}",
b"colone" | b"coloneq" | b"Assign" => "\u{2254}",
b"ecolon" | b"eqcolon" => "\u{2255}",
b"ecir" | b"eqcirc" => "\u{2256}",
b"cire" | b"circeq" => "\u{2257}",
b"wedgeq" => "\u{2259}",
b"veeeq" => "\u{225A}",
b"trie" | b"triangleq" => "\u{225C}",
b"equest" | b"questeq" => "\u{225F}",
b"ne" | b"NotEqual" => "\u{2260}",
b"equiv" | b"Congruent" => "\u{2261}",
b"nequiv" | b"NotCongruent" => "\u{2262}",
b"le" | b"leq" => "\u{2264}",
b"ge" | b"GreaterEqual" | b"geq" => "\u{2265}",
b"lE" | b"LessFullEqual" | b"leqq" => "\u{2266}",
b"gE" | b"GreaterFullEqual" | b"geqq" => "\u{2267}",
b"lnE" | b"lneqq" => "\u{2268}",
b"gnE" | b"gneqq" => "\u{2269}",
b"Lt" | b"NestedLessLess" | b"ll" => "\u{226A}",
b"Gt" | b"NestedGreaterGreater" | b"gg" => "\u{226B}",
b"twixt" | b"between" => "\u{226C}",
b"NotCupCap" => "\u{226D}",
b"nlt" | b"NotLess" | b"nless" => "\u{226E}",
b"ngt" | b"NotGreater" | b"ngtr" => "\u{226F}",
b"nle" | b"NotLessEqual" | b"nleq" => "\u{2270}",
b"nge" | b"NotGreaterEqual" | b"ngeq" => "\u{2271}",
b"lsim" | b"LessTilde" | b"lesssim" => "\u{2272}",
b"gsim" | b"gtrsim" | b"GreaterTilde" => "\u{2273}",
b"nlsim" | b"NotLessTilde" => "\u{2274}",
b"ngsim" | b"NotGreaterTilde" => "\u{2275}",
b"lg" | b"lessgtr" | b"LessGreater" => "\u{2276}",
b"gl" | b"gtrless" | b"GreaterLess" => "\u{2277}",
b"ntlg" | b"NotLessGreater" => "\u{2278}",
b"ntgl" | b"NotGreaterLess" => "\u{2279}",
b"pr" | b"Precedes" | b"prec" => "\u{227A}",
b"sc" | b"Succeeds" | b"succ" => "\u{227B}",
b"prcue" | b"PrecedesSlantEqual" | b"preccurlyeq" => "\u{227C}",
b"sccue" | b"SucceedsSlantEqual" | b"succcurlyeq" => "\u{227D}",
b"prsim" | b"precsim" | b"PrecedesTilde" => "\u{227E}",
b"scsim" | b"succsim" | b"SucceedsTilde" => "\u{227F}",
b"npr" | b"nprec" | b"NotPrecedes" => "\u{2280}",
b"nsc" | b"nsucc" | b"NotSucceeds" => "\u{2281}",
b"sub" | b"subset" => "\u{2282}",
b"sup" | b"supset" | b"Superset" => "\u{2283}",
b"nsub" => "\u{2284}",
b"nsup" => "\u{2285}",
b"sube" | b"SubsetEqual" | b"subseteq" => "\u{2286}",
b"supe" | b"supseteq" | b"SupersetEqual" => "\u{2287}",
b"nsube" | b"nsubseteq" | b"NotSubsetEqual" => "\u{2288}",
b"nsupe" | b"nsupseteq" | b"NotSupersetEqual" => "\u{2289}",
b"subne" | b"subsetneq" => "\u{228A}",
b"supne" | b"supsetneq" => "\u{228B}",
b"cupdot" => "\u{228D}",
b"uplus" | b"UnionPlus" => "\u{228E}",
b"sqsub" | b"SquareSubset" | b"sqsubset" => "\u{228F}",
b"sqsup" | b"SquareSuperset" | b"sqsupset" => "\u{2290}",
b"sqsube" | b"SquareSubsetEqual" | b"sqsubseteq" => "\u{2291}",
b"sqsupe" | b"SquareSupersetEqual" | b"sqsupseteq" => "\u{2292}",
b"sqcap" | b"SquareIntersection" => "\u{2293}",
b"sqcup" | b"SquareUnion" => "\u{2294}",
b"oplus" | b"CirclePlus" => "\u{2295}",
b"ominus" | b"CircleMinus" => "\u{2296}",
b"otimes" | b"CircleTimes" => "\u{2297}",
b"osol" => "\u{2298}",
b"odot" | b"CircleDot" => "\u{2299}",
b"ocir" | b"circledcirc" => "\u{229A}",
b"oast" | b"circledast" => "\u{229B}",
b"odash" | b"circleddash" => "\u{229D}",
b"plusb" | b"boxplus" => "\u{229E}",
b"minusb" | b"boxminus" => "\u{229F}",
b"timesb" | b"boxtimes" => "\u{22A0}",
b"sdotb" | b"dotsquare" => "\u{22A1}",
b"vdash" | b"RightTee" => "\u{22A2}",
b"dashv" | b"LeftTee" => "\u{22A3}",
b"top" | b"DownTee" => "\u{22A4}",
b"bottom" | b"bot" | b"perp" | b"UpTee" => "\u{22A5}",
b"models" => "\u{22A7}",
b"vDash" | b"DoubleRightTee" => "\u{22A8}",
b"Vdash" => "\u{22A9}",
b"Vvdash" => "\u{22AA}",
b"VDash" => "\u{22AB}",
b"nvdash" => "\u{22AC}",
b"nvDash" => "\u{22AD}",
b"nVdash" => "\u{22AE}",