Parse HTML character references: fast, spec-compliant, positional information.
npm:
npm install parse-entities
var decode = require('parse-entities')
decode('alpha & bravo')
// => alpha & bravo
decode('charlie ©cat; delta')
// => charlie ©cat; delta
decode('echo © foxtrot ≠ golf 𝌆 hotel')
// => echo © foxtrot ≠ golf 𝌆 hotel
parseEntities(value[, options])
options
options.additional
Additional character to accept (string?
, default: ''
).
This allows other characters, without error, when following an ampersand.
options.attribute
Whether to parse value
as an attribute value (boolean?
, default:
false
).
options.nonTerminated
Whether to allow non-terminated entities (boolean
, default: true
).
For example, ©cat
for ©cat
. This behaviour is spec-compliant but
can lead to unexpected results.
options.warning
Error handler (Function?
).
options.text
Text handler (Function?
).
options.reference
Reference handler (Function?
).
options.warningContext
Context used when invoking warning
('*'
, optional).
options.textContext
Context used when invoking text
('*'
, optional).
options.referenceContext
Context used when invoking reference
('*'
, optional)
options.position
Starting position
of value
(Location
or Position
, optional). Useful
when dealing with values nested in some sort of syntax tree. The default is:
{
start: {line: 1, column: 1, offset: 0},
indent: []
}
string
— Decoded value
.
function warning(reason, position, code)
Error handler.
this
refers to warningContext
when given to parseEntities
.
reason
Human-readable reason for triggering a parse error (string
).
position
Place at which the parse error occurred (Position
).
code
Identifier of reason for triggering a parse error (number
).
The following codes are used:
Code | Example | Note |
---|---|---|
1 |
foo & bar |
Missing semicolon (named) |
2 |
foo { bar |
Missing semicolon (numeric) |
3 |
Foo &bar baz |
Ampersand did not start a reference |
4 |
Foo &# |
Empty reference |
5 |
Foo &bar; baz |
Unknown entity |
6 |
Foo € baz |
Disallowed reference |
7 |
Foo � baz |
Prohibited: outside permissible unicode range |
function text(value, location)
Text handler.
this
refers to textContext
when given to parseEntities
.
value
String of content (string
).
location
Location at which value
starts and ends (Location
).
function reference(value, location, source)
Character reference handler.
this
refers to referenceContext
when given to parseEntities
.
value
Encoded character reference (string
).
location
Location at which value
starts and ends (Location
).
source
Source of character reference (Location
).
stringify-entities
— Encode HTML character referencescharacter-entities
— Info on character entitiescharacter-entities-html4
— Info on HTML4 character entitiescharacter-entities-legacy
— Info on legacy character entitiescharacter-reference-invalid
— Info on invalid numeric character references