sct: fix parsing of empty sections

src/sct.pest

@@ -15,17 +15,17 @@ line = _{ broken ~ NL }
 
 section_header = _{ "[" ~ header_name ~ "]" }
 
-vor_section = { "[VOR]" ~ NL ~ (location ~ NL)+ }
-ndb_section = { "[NDB]" ~ NL ~ (location ~ NL)+ }
-fixes_section = { "[FIXES]" ~ NL ~ ((fix | broken) ~ NL)+ }
-airport_section = { "[AIRPORT]" ~ NL ~ (location ~ NL)+ }
-runway_section = { "[RUNWAY]" ~ NL ~ (runway ~ NL)+ }
-high_airway_section = { "[HIGH AIRWAY]" ~ NL ~ (airway ~ NL)+ }
-low_airway_section = { "[LOW AIRWAY]" ~ NL ~ (airway ~ NL)+ }
-unparsed_section = { (section_header ~ NL ~ line+) }
+vor_section = { "[VOR]" ~ NL ~ (location ~ NL)* }
+ndb_section = { "[NDB]" ~ NL ~ (location ~ NL)* }
+fixes_section = { "[FIXES]" ~ NL ~ ((fix | broken) ~ NL)* }
+airport_section = { "[AIRPORT]" ~ NL ~ (location ~ NL)* }
+runway_section = { "[RUNWAY]" ~ NL ~ (runway ~ NL)* }
+high_airway_section = { "[HIGH AIRWAY]" ~ NL ~ (airway ~ NL)* }
+low_airway_section = { "[LOW AIRWAY]" ~ NL ~ (airway ~ NL)* }
+unparsed_section = { (section_header ~ NL ~ line*) }
 
 fix = { fix_designator ~ coordinate }
-location = { designator ~ frequency ~ coordinate ~ "D"? }
+location = { designator ~ frequency ~ coordinate ~ ("A" | "B" | "C" | "D" | "E" | "F" | "G")? }
 runway = { runway_designator ~ runway_designator ~ degrees ~ degrees ~ coordinate ~ coordinate ~ designator }
 airway = { designator ~ coordinate ~ coordinate }
 // EDGG has invalid WPT with spaces

src/sct.rs

@@ -605,4 +605,41 @@ A4         N048.42.56.998 E017.23.09.999 N048.51.11.520 E017.10.04.238
         );
         // TODO GEO, REGIONS, ARTCC, SID, STAR, AIRWAY
     }
+
+    #[test]
+    fn test_empty_section() {
+        let sct_bytes = b"
+;=========================================================================================================================;
+
+[INFO]
+AeroNav M\xfcnchen 2401/1-1 EDMM 20240125
+AERO_NAV
+ZZZZ
+N048.21.13.618
+E011.47.09.909
+60
+39
+-3
+1
+
+#define COLOR_APP       16711680
+#define COLOR_AirspaceA  8421376
+
+[SID]
+
+[STAR]
+EDDM TRAN RNP26R LANDU26                 N048.35.46.899 E012.16.26.140 N048.32.16.501 E011.30.05.529 COLOR_APP
+                                         N048.32.16.501 E011.30.05.529 N048.25.44.061 E011.31.15.931 COLOR_APP
+                                         N048.25.44.061 E011.31.15.931 N048.29.36.319 E012.22.42.409 COLOR_APP
+                                         N048.29.36.319 E012.22.42.409 N048.30.47.361 E012.37.38.952 COLOR_APP
+
+EDDN TRAN ILS10 DN430                    N049.33.11.289 E010.30.33.379 N049.32.37.168 E010.36.38.149 COLOR_APP
+                                         N049.32.37.168 E010.36.38.149 N049.32.02.731 E010.42.42.681 COLOR_APP
+
+EDQD STAR ALL LONLIxZ                    N050.04.29.060 E011.13.34.989 N049.53.50.819 E011.24.28.540
+        ";
+        let sct = Sct::parse(sct_bytes);
+
+        assert!(sct.is_ok())
+    }
 }