feat: Add Lua cataloger (#2613)

Signed-off-by: Laurent Goderre <laurent.goderre@docker.com>

syft/internal/packagemetadata/generated.go

@@ -29,6 +29,7 @@ func AllTypes() []any {
 		pkg.JavaArchive{},
 		pkg.LinuxKernel{},
 		pkg.LinuxKernelModule{},
+		pkg.LuaRocksPackage{},
 		pkg.MicrosoftKbPatch{},
 		pkg.NixStoreEntry{},
 		pkg.NpmPackage{},

syft/internal/packagemetadata/names.go

@@ -105,6 +105,7 @@ var jsonTypes = makeJSONTypes(
 	jsonNames(pkg.RustCargoLockEntry{}, "rust-cargo-lock-entry", "RustCargoPackageMetadata"),
 	jsonNamesWithoutLookup(pkg.RustBinaryAuditEntry{}, "rust-cargo-audit-entry", "RustCargoPackageMetadata"), // the legacy value is split into two types, where the other is preferred
 	jsonNames(pkg.WordpressPluginEntry{}, "wordpress-plugin-entry", "WordpressMetadata"),
+	jsonNames(pkg.LuaRocksPackage{}, "luarocks-package"),
 )
 
 func expandLegacyNameVariants(names ...string) []string {

syft/internal/parsing/basic_parsing.go

@@ -0,0 +1,71 @@
+package parsing
+
+import (
+	"bytes"
+	"fmt"
+	"strings"
+	"unicode"
+)
+
+func IsWhitespace(c byte) bool {
+	return unicode.IsSpace(rune(c))
+}
+
+func IsLiteral(c byte) bool {
+	r := rune(c)
+	return unicode.IsNumber(r) || unicode.IsLetter(r) || r == '.' || r == '_'
+}
+
+func SkipWhitespace(data []byte, i *int) {
+	for *i < len(data) && IsWhitespace(data[*i]) {
+		*i++
+	}
+}
+
+func PrintError(data []byte, i int) string {
+	line := 1
+	char := 1
+
+	prev := []string{}
+	curr := bytes.Buffer{}
+
+	for idx, c := range data {
+		if c == '\n' {
+			prev = append(prev, curr.String())
+			curr.Reset()
+
+			if idx >= i {
+				break
+			}
+
+			line++
+			char = 1
+			continue
+		}
+		if idx < i {
+			char++
+		}
+		curr.WriteByte(c)
+	}
+
+	l1 := fmt.Sprintf("%d", line-1)
+	l2 := fmt.Sprintf("%d", line)
+
+	if len(l1) < len(l2) {
+		l1 = " " + l1
+	}
+
+	sep := ": "
+
+	lines := ""
+	if len(prev) > 1 {
+		lines += fmt.Sprintf("%s%s%s\n", l1, sep, prev[len(prev)-2])
+	}
+	if len(prev) > 0 {
+		lines += fmt.Sprintf("%s%s%s\n", l2, sep, prev[len(prev)-1])
+	}
+
+	pointer := strings.Repeat(" ", len(l2)+len(sep)+char-1) + "^"
+
+	return fmt.Sprintf("line: %v, char: %v\n%s%s", line, char, lines, pointer)
+}