impl DEPEND parser

tests/depend.rs

@@ -0,0 +1,27 @@
+use gentoo_utils::depend;
+use mon::{Parser, eof, input::InputIter, tag};
+use std::fs;
+
+#[test]
+fn parse_md5_cache() {
+    let md5_cache = "/var/db/repos/gentoo/metadata/md5-cache";
+
+    for cat in fs::read_dir(md5_cache).unwrap() {
+        for pkg in fs::read_dir(cat.unwrap().path()).unwrap() {
+            let metadata = fs::read_to_string(pkg.unwrap().path()).unwrap();
+
+            for line in metadata.lines() {
+                if line.starts_with("DEPEND=") {
+                    eprintln!("{line}");
+
+                    depend::parsers::exprs()
+                        .ignore()
+                        .or(eof())
+                        .preceded_by(tag("DEPEND="))
+                        .check_finished(InputIter::new(line))
+                        .unwrap();
+                }
+            }
+        }
+    }
+}