data_modelling_core/validation/
xml.rs

1//! XML validation utilities
2//!
3//! Provides functionality for validating XML files against XSD schemas.
4
5use anyhow::{Context, Result};
6use std::path::Path;
7
8/// Validate XML content against an XSD schema file.
9///
10/// # Arguments
11///
12/// * `xml_content` - The XML content to validate
13/// * `xsd_path` - Path to the XSD schema file (relative to schemas/ directory)
14///
15/// # Returns
16///
17/// A `Result` indicating whether validation succeeded.
18///
19/// # Note
20///
21/// This is a placeholder implementation. Full XSD validation requires
22/// a proper XSD validation library or external tool integration.
23pub fn validate_xml_against_xsd(xml_content: &str, xsd_path: &str) -> Result<()> {
24    // TODO: Implement full XSD validation
25    // For now, we'll do basic XML well-formedness checking
26    // using quick-xml if available
27
28    #[cfg(feature = "bpmn")]
29    {
30        use quick_xml::Reader;
31        use quick_xml::events::Event;
32
33        let mut reader = Reader::from_str(xml_content);
34        reader.config_mut().trim_text(true);
35
36        loop {
37            match reader.read_event() {
38                Ok(Event::Eof) => break,
39                Ok(_) => continue,
40                Err(e) => {
41                    return Err(anyhow::anyhow!(
42                        "XML parsing error: {}. Schema: {}",
43                        e,
44                        xsd_path
45                    ))
46                    .context("XML validation failed");
47                }
48            }
49        }
50    }
51
52    #[cfg(not(feature = "bpmn"))]
53    {
54        // Basic check: ensure XML starts with <?xml
55        if !xml_content.trim_start().starts_with("<?xml") {
56            return Err(anyhow::anyhow!(
57                "Invalid XML: missing XML declaration. Schema: {}",
58                xsd_path
59            ))
60            .context("XML validation failed");
61        }
62    }
63
64    // Verify XSD file exists (for future full validation)
65    let schemas_dir = Path::new("schemas");
66    let full_xsd_path = schemas_dir.join(xsd_path);
67    if !full_xsd_path.exists() {
68        return Err(anyhow::anyhow!(
69            "XSD schema file not found: {}. Please ensure schema files are downloaded.",
70            full_xsd_path.display()
71        ))
72        .context("XSD schema file missing");
73    }
74
75    Ok(())
76}
77
78/// Load XSD schema content from the schemas directory.
79///
80/// # Arguments
81///
82/// * `xsd_path` - Path to the XSD schema file (relative to schemas/ directory)
83///
84/// # Returns
85///
86/// The XSD schema content as a string.
87pub fn load_xsd_schema(xsd_path: &str) -> Result<String> {
88    use std::fs;
89
90    let schemas_dir = Path::new("schemas");
91    let full_xsd_path = schemas_dir.join(xsd_path);
92
93    fs::read_to_string(&full_xsd_path)
94        .with_context(|| format!("Failed to read XSD schema: {}", full_xsd_path.display()))
95}
data_modelling_core/validation/xml.rs

data_modelling_core/validation/
xml.rs
