xml_disassembler/parsers/
parse_xml.rs

1//! Parse XML file from path into XmlElement structure.
2
3use serde_json::Value;
4use tokio::fs;
5
6use crate::parsers::parse_xml_cdata;
7use crate::parsers::strip_whitespace_text_nodes;
8use crate::types::XmlElement;
9
10/// Parses an XML file from a path.
11pub async fn parse_xml(file_path: &str) -> Option<XmlElement> {
12    let content = match fs::read_to_string(file_path).await {
13        Ok(c) => c,
14        Err(e) => {
15            log::error!(
16                "{} was unable to be parsed and will not be processed. Confirm formatting and try again.",
17                file_path
18            );
19            log::debug!("Parse error: {}", e);
20            return None;
21        }
22    };
23    parse_xml_from_str(&content, file_path)
24}
25
26/// Parses XML from a string. The file_path is used for error logging only.
27/// Uses custom parser that preserves CDATA sections (output as #cdata key).
28pub fn parse_xml_from_str(content: &str, file_path: &str) -> Option<XmlElement> {
29    let parsed: Value = match parse_xml_cdata::parse_xml_with_cdata(content) {
30        Ok(v) => v,
31        Err(e) => {
32            log::error!(
33                "{} was unable to be parsed and will not be processed. Confirm formatting and try again.",
34                file_path
35            );
36            log::debug!("Parse error: {}", e);
37            return None;
38        }
39    };
40
41    let cleaned = strip_whitespace_text_nodes(&parsed);
42    Some(cleaned)
43}
44
45/// Extract xmlns attribute from raw XML (quickxml_to_serde drops it).
46/// Returns Some(value) if found, None otherwise.
47pub fn extract_xmlns_from_raw(xml_content: &str) -> Option<String> {
48    let re = regex::Regex::new(r#"xmlns="([^"]*)""#).ok()?;
49    re.captures(xml_content).map(|c| c[1].to_string())
50}
51
52/// Extract XML declaration from raw XML (quickxml_to_serde drops it).
53/// Returns a Value object like {"@version": "1.0", "@encoding": "UTF-8", "@standalone": "yes"}
54/// for use in build_xml_string. None if no declaration found.
55pub fn extract_xml_declaration_from_raw(xml_content: &str) -> Option<XmlElement> {
56    let decl_re = regex::Regex::new(r#"<\?xml\s+([^?]+)\?>"#).ok()?;
57    let decl_content = decl_re.captures(xml_content)?.get(1)?.as_str();
58    let mut decl = serde_json::Map::new();
59    let version_re = regex::Regex::new(r#"version="([^"]*)""#).ok()?;
60    if let Some(cap) = version_re.captures(decl_content) {
61        decl.insert("@version".to_string(), Value::String(cap[1].to_string()));
62    } else {
63        return None;
64    }
65    let encoding_re = regex::Regex::new(r#"encoding="([^"]*)""#).ok()?;
66    if let Some(cap) = encoding_re.captures(decl_content) {
67        decl.insert("@encoding".to_string(), Value::String(cap[1].to_string()));
68    }
69    let standalone_re = regex::Regex::new(r#"standalone="([^"]*)""#).ok()?;
70    if let Some(cap) = standalone_re.captures(decl_content) {
71        decl.insert("@standalone".to_string(), Value::String(cap[1].to_string()));
72    }
73    Some(Value::Object(decl))
74}
75
76#[cfg(test)]
77mod tests {
78    use super::*;
79
80    #[test]
81    fn extract_xmlns_from_raw_finds_namespace() {
82        let xml = r#"<root xmlns="http://soap.sforce.com/2006/04/metadata"><a/></root>"#;
83        assert_eq!(
84            extract_xmlns_from_raw(xml),
85            Some("http://soap.sforce.com/2006/04/metadata".to_string())
86        );
87    }
88
89    #[test]
90    fn extract_xmlns_from_raw_returns_none_when_absent() {
91        let xml = r#"<root><a/></root>"#;
92        assert_eq!(extract_xmlns_from_raw(xml), None);
93    }
94
95    #[test]
96    fn extract_xml_declaration_from_raw_parses_version_and_encoding() {
97        let xml = r#"<?xml version="1.0" encoding="UTF-8"?><root/>"#;
98        let decl = extract_xml_declaration_from_raw(xml).unwrap();
99        let obj = decl.as_object().unwrap();
100        assert_eq!(obj.get("@version").and_then(|v| v.as_str()), Some("1.0"));
101        assert_eq!(obj.get("@encoding").and_then(|v| v.as_str()), Some("UTF-8"));
102    }
103
104    #[test]
105    fn extract_xml_declaration_from_raw_parses_standalone() {
106        let xml = r#"<?xml version="1.0" encoding="UTF-8" standalone="yes"?><root/>"#;
107        let decl = extract_xml_declaration_from_raw(xml).unwrap();
108        let obj = decl.as_object().unwrap();
109        assert_eq!(obj.get("@standalone").and_then(|v| v.as_str()), Some("yes"));
110    }
111
112    #[test]
113    fn extract_xml_declaration_from_raw_returns_none_without_declaration() {
114        let xml = r#"<root/>"#;
115        assert!(extract_xml_declaration_from_raw(xml).is_none());
116    }
117}
xml_disassembler/parsers/parse_xml.rs

xml_disassembler/parsers/
parse_xml.rs
