| 1 | use jaq_interpret::{Ctx, FilterT, ParseCtx, RcIter, Val}; |
| 2 | |
| 3 | pub struct JqEngine; |
| 4 | |
| 5 | #[derive(Debug)] |
| 6 | pub struct JqResult { |
| 7 | pub output: Vec<String>, |
| 8 | pub error: Option<String>, |
| 9 | } |
| 10 | |
| 11 | impl JqEngine { |
| 12 | pub fn execute(query: &str, input: &serde_json::Value) -> JqResult { |
| 13 | if query.trim().is_empty() { |
| 14 | return JqResult { |
| 15 | output: vec![serde_json::to_string_pretty(input).unwrap_or_default()], |
| 16 | error: None, |
| 17 | }; |
| 18 | } |
| 19 | |
| 20 | let mut defs = ParseCtx::new(Vec::new()); |
| 21 | defs.insert_natives(jaq_core::core()); |
| 22 | defs.insert_defs(jaq_std::std()); |
| 23 | |
| 24 | let (filter, errs) = jaq_parse::parse(query, jaq_parse::main()); |
| 25 | |
| 26 | if !errs.is_empty() { |
| 27 | return JqResult { |
| 28 | output: Vec::new(), |
| 29 | error: Some(format!("Parse error in query")), |
| 30 | }; |
| 31 | } |
| 32 | |
| 33 | let Some(filter) = filter else { |
| 34 | return JqResult { |
| 35 | output: Vec::new(), |
| 36 | error: Some("Failed to parse query".to_string()), |
| 37 | }; |
| 38 | }; |
| 39 | |
| 40 | let filter = defs.compile(filter); |
| 41 | |
| 42 | let inputs = RcIter::new(core::iter::empty()); |
| 43 | let val = Val::from(input.clone()); |
| 44 | |
| 45 | let mut output = Vec::new(); |
| 46 | for result in filter.run((Ctx::new([], &inputs), val)) { |
| 47 | match result { |
| 48 | Ok(v) => { |
| 49 | let json_val: serde_json::Value = v.into(); |
| 50 | output.push( |
| 51 | serde_json::to_string_pretty(&json_val) |
| 52 | .unwrap_or_else(|_| format!("{:?}", json_val)), |
| 53 | ); |
| 54 | } |
| 55 | Err(e) => { |
| 56 | return JqResult { |
| 57 | output, |
| 58 | error: Some(format!("{}", e)), |
| 59 | }; |
| 60 | } |
| 61 | } |
| 62 | } |
| 63 | |
| 64 | JqResult { |
| 65 | output, |
| 66 | error: None, |
| 67 | } |
| 68 | } |
| 69 | } |
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