Comments (5)
In SPARQL literals, \\
is an escape sequence for a single backslash \
. Therefore, the string "@work\\.example$"
has contents @work\.example$
, so the latter is the correct result.
It also makes sense: in example 17.4.2.5 of the SPARQL spec, the purpose of the regex is to match <mailto:[email protected]>
. In other words, the (single) backslash serves to escape the dot.
So the output is correct as far as I understand.
from sparql.js.
@RubenVerborgh the problem here is that when you unescape "\"@work\\.example$\""
you'll get "@work\.example$"
which differs from original SPARQL which looks like "@work\\.example$"
.
Which means that my generated queries will always be wrong here. So, that does looks like a bug to me. \\
should be escaped to \\\\
during parsing, then when unescaping back it will become \\
which is exactly what was there originally.
from sparql.js.
I still think it's the same.
Language | Literal in language syntax | Interpretation (actual characters inside literal) |
---|---|---|
SPARQL | "@work\\.example$" |
@work\.example$ |
JavaScript | '"@work\\.example$"' |
"@work\.example$" |
Note how the interpretation is the same in both languages (but the N3.js wraps all literals in double quotes).
In order to convert from the representation to SPARQL, you will need to escape the backslash.
Note that you generally never escape during parsing: parsing means unescaping, generating means escaping. (See for instance how we parse URLs.)
from sparql.js.
Hmm.. Makes sense! Good, then I'll escape backslashes specifically during query generation.
from sparql.js.
Yeah, that's probably something that needs to be done for all literal generation, because backslashes have special meaning.
from sparql.js.
Related Issues (20)
- SPARQL Generator error "Cannot read property 'termType' of undefined" HOT 6
- Use this lib with Turtle in-memory HOT 1
- support for SPARQL query executer HOT 3
- Generate SPARQL queries without ";" or "," HOT 3
- Incorrect serialization of ADD, MOVE, COPY statements in SPARQL generator.
- Unary plus operator is not properly parsed
- The package does not work as CLI HOT 4
- FunctionCallExpression doesn't work with string function HOT 2
- Spec tests broken on Node 18 HOT 1
- Empty string as separator in Group Concat does not work HOT 1
- W3C test: Parser fails when a decimal ends with a dot HOT 2
- W3C test: DESCRIBE <u> fails with "cannot resolve relative IRI u because no base IRI was set" HOT 1
- W3C test: cannot parse CONSTRUCT { [ <s> ?s; <p> ?p; <o> ?o ] . }
- Serialising a double inverse property path results in a syntactically invalid query
- Update types on @DefinitelyTyped
- Prefixed IRIs with an escaped character in the local name get parsed incorrectly
- Parsing INSERT/DELETE queries with too much whitespace cause "too much recursion"
- Instructions for setting variables do not work
- Incorrect parsing of `PropertyListPathNotEmpty` HOT 1
- Unexpected error : "Use of ungrouped variable in projection of operation" ? HOT 7
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from sparql.js.