diff options
| -rw-r--r-- | crates/mozart-metadata-minifier/src/lib.rs | 140 |
1 files changed, 4 insertions, 136 deletions
diff --git a/crates/mozart-metadata-minifier/src/lib.rs b/crates/mozart-metadata-minifier/src/lib.rs index cf88138..7d0e803 100644 --- a/crates/mozart-metadata-minifier/src/lib.rs +++ b/crates/mozart-metadata-minifier/src/lib.rs @@ -6,6 +6,9 @@ //! library. It operates on raw JSON values (`serde_json::Value`) so that it //! stays independent of any particular package struct definition. //! +//! MetadataMinifier::minify() is not ported because it is not used in Composer itself. +//! The function is mainly for package repositories. +//! //! # Minified format //! //! A minified version list is a JSON array of objects where: @@ -18,7 +21,7 @@ //! A response that uses this encoding contains a top-level key //! `"minified": "composer/2.0"`. -use serde_json::{Map, Value}; +use serde_json::Value; /// The sentinel value used by Composer's metadata minifier to mark a deleted /// field. @@ -65,61 +68,6 @@ pub fn expand(versions: &[Value]) -> Vec<Value> { expanded } -/// Minify a list of fully-expanded version objects into diff form. -/// -/// The first entry is emitted in full. Each subsequent entry only contains -/// fields that changed compared to the previous one plus `"__unset"` markers -/// for fields that were removed. -pub fn minify(versions: &[Value]) -> Vec<Value> { - let mut minified: Vec<Value> = Vec::with_capacity(versions.len()); - - let Some((first, rest)) = versions.split_first() else { - return minified; - }; - - let Some(mut last_known) = first.as_object().cloned() else { - minified.push(first.clone()); - return minified; - }; - - minified.push(Value::Object(last_known.clone())); - - for version in rest { - let Some(current) = version.as_object() else { - minified.push(version.clone()); - continue; - }; - - let mut diff = Map::new(); - - // Add changed or new fields. - for (key, val) in current { - match last_known.get(key) { - Some(prev) if prev == val => {} // unchanged — omit - _ => { - diff.insert(key.clone(), val.clone()); - last_known.insert(key.clone(), val.clone()); - } - } - } - - // Mark deleted fields. - let removed: Vec<String> = last_known - .keys() - .filter(|k| !current.contains_key(k.as_str())) - .cloned() - .collect(); - for key in &removed { - diff.insert(key.clone(), Value::String(UNSET_SENTINEL.to_string())); - last_known.remove(key.as_str()); - } - - minified.push(Value::Object(diff)); - } - - minified -} - #[cfg(test)] mod tests { use super::*; @@ -179,96 +127,16 @@ mod tests { assert!(expanded[2].get("scripts").is_none()); } - /// Mirrors the canonical Composer MetadataMinifierTest. - #[test] - fn minify_matches_composer_test() { - let full = vec![ - json!({ - "name": "foo/bar", - "version": "2.0.0", - "version_normalized": "2.0.0.0", - "type": "library", - "scripts": {"foo": ["bar"]}, - "license": ["MIT"] - }), - json!({ - "name": "foo/bar", - "version": "1.2.0", - "version_normalized": "1.2.0.0", - "type": "library", - "license": ["GPL"], - "homepage": "https://example.org" - }), - json!({ - "name": "foo/bar", - "version": "1.0.0", - "version_normalized": "1.0.0.0", - "type": "library", - "license": ["GPL"] - }), - ]; - - let minified = minify(&full); - assert_eq!(minified.len(), 3); - - // First entry — unchanged. - assert_eq!(minified[0], full[0]); - - // Second entry — only diffs. - let diff1 = minified[1].as_object().unwrap(); - assert_eq!(diff1["version"], "1.2.0"); - assert_eq!(diff1["version_normalized"], "1.2.0.0"); - assert_eq!(diff1["license"], json!(["GPL"])); - assert_eq!(diff1["homepage"], "https://example.org"); - assert_eq!(diff1["scripts"], "__unset"); - assert!(!diff1.contains_key("name")); - assert!(!diff1.contains_key("type")); - - // Third entry — only diffs. - let diff2 = minified[2].as_object().unwrap(); - assert_eq!(diff2["version"], "1.0.0"); - assert_eq!(diff2["version_normalized"], "1.0.0.0"); - assert_eq!(diff2["homepage"], "__unset"); - assert!(!diff2.contains_key("name")); - assert!(!diff2.contains_key("type")); - assert!(!diff2.contains_key("license")); - } - - #[test] - fn roundtrip_expand_minify() { - let full = vec![ - json!({"name": "a/b", "version": "2.0.0", "require": {"php": ">=8.0"}}), - json!({"name": "a/b", "version": "1.0.0", "require": {"php": ">=7.4"}}), - ]; - - let minified = minify(&full); - let expanded = expand(&minified); - assert_eq!(expanded, full); - } - #[test] fn expand_empty() { assert!(expand(&[]).is_empty()); } #[test] - fn minify_empty() { - assert!(minify(&[]).is_empty()); - } - - #[test] fn expand_single_version() { let versions = vec![json!({"name": "a/b", "version": "1.0.0"})]; let expanded = expand(&versions); assert_eq!(expanded.len(), 1); assert_eq!(expanded[0], versions[0]); } - - #[test] - fn minify_single_version() { - let versions = vec![json!({"name": "a/b", "version": "1.0.0"})]; - let minified = minify(&versions); - assert_eq!(minified.len(), 1); - assert_eq!(minified[0], versions[0]); - } } |