Fork of https://github.com/oxigraph/oxigraph.git for the purpose of NextGraph project
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82 lines
2.7 KiB
82 lines
2.7 KiB
use anyhow::{anyhow, Result};
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use oxigraph::io::{DatasetFormat, GraphFormat};
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use oxigraph::model::{GraphName, GraphNameRef};
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use oxigraph::MemoryStore;
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use std::fs::File;
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use std::io::{BufRead, BufReader, Read};
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use std::path::PathBuf;
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pub fn read_file(url: &str) -> Result<impl BufRead> {
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let mut path = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
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path.push(if url.starts_with("http://w3c.github.io/rdf-tests/") {
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Ok(url.replace("http://w3c.github.io/rdf-tests/", "rdf-tests/"))
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} else if url.starts_with("http://www.w3.org/2013/RDFXMLTests/") {
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Ok(url.replace("http://www.w3.org/2013/RDFXMLTests/", "rdf-tests/rdf-xml/"))
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} else if url.starts_with("http://www.w3.org/2001/sw/DataAccess/tests/data-r2/") {
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Ok(url.replace(
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"http://www.w3.org/2001/sw/DataAccess/tests/",
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"rdf-tests/sparql11/",
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))
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} else if url.starts_with("http://www.w3.org/2009/sparql/docs/tests/data-sparql11/") {
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Ok(url.replace(
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"http://www.w3.org/2009/sparql/docs/tests/",
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"rdf-tests/sparql11/",
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))
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} else if url.starts_with("https://github.com/oxigraph/oxigraph/tests/") {
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Ok(url.replace(
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"https://github.com/oxigraph/oxigraph/tests/",
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"oxigraph-tests/",
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))
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} else {
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Err(anyhow!("Not supported url for file: {}", url))
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}?);
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Ok(BufReader::new(File::open(&path)?))
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}
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pub fn read_file_to_string(url: &str) -> Result<String> {
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let mut buf = String::new();
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read_file(url)?.read_to_string(&mut buf)?;
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Ok(buf)
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}
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pub fn load_to_store<'a>(
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url: &str,
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store: &MemoryStore,
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to_graph_name: impl Into<GraphNameRef<'a>>,
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) -> Result<()> {
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if url.ends_with(".nt") {
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store.load_graph(
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read_file(url)?,
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GraphFormat::NTriples,
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to_graph_name,
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Some(url),
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)?
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} else if url.ends_with(".ttl") {
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store.load_graph(
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read_file(url)?,
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GraphFormat::Turtle,
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to_graph_name,
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Some(url),
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)?
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} else if url.ends_with(".rdf") {
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store.load_graph(
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read_file(url)?,
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GraphFormat::RdfXml,
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to_graph_name,
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Some(url),
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)?
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} else if url.ends_with(".nq") {
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store.load_dataset(read_file(url)?, DatasetFormat::NQuads, Some(url))?
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} else if url.ends_with(".trig") {
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store.load_dataset(read_file(url)?, DatasetFormat::TriG, Some(url))?
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} else {
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return Err(anyhow!("Serialization type not found for {}", url));
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}
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Ok(())
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}
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pub fn load_store(url: &str) -> Result<MemoryStore> {
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let store = MemoryStore::new();
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load_to_store(url, &store, &GraphName::DefaultGraph)?;
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Ok(store)
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}
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