1 files changed, 156 insertions, 0 deletions
diff --git a/tvloader/parser2v2/parse_creation_info.go b/tvloader/parser2v2/parse_creation_info.go
new file mode 100644
index 0000000..da258bd
--- /dev/null
+++ b/tvloader/parser2v2/parse_creation_info.go
@@ -0,0 +1,156 @@
+// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+
+package parser2v2
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/spdx/tools-golang/spdx/common"
+	"github.com/spdx/tools-golang/spdx/v2_2"
+)
+
+func (parser *tvParser2_2) parsePairFromCreationInfo2_2(tag string, value string) error {
+	// fail if not in Creation Info parser state
+	if parser.st != psCreationInfo2_2 {
+		return fmt.Errorf("got invalid state %v in parsePairFromCreationInfo2_2", parser.st)
+	}
+
+	// create an SPDX Creation Info data struct if we don't have one already
+	if parser.doc.CreationInfo == nil {
+		parser.doc.CreationInfo = &v2_2.CreationInfo{}
+	}
+
+	ci := parser.doc.CreationInfo
+	switch tag {
+	case "LicenseListVersion":
+		ci.LicenseListVersion = value
+	case "Creator":
+		subkey, subvalue, err := extractSubs(value)
+		if err != nil {
+			return err
+		}
+
+		creator := common.Creator{Creator: subvalue}
+		switch subkey {
+		case "Person", "Organization", "Tool":
+			creator.CreatorType = subkey
+		default:
+			return fmt.Errorf("unrecognized Creator type %v", subkey)
+		}
+
+		ci.Creators = append(ci.Creators, creator)
+	case "Created":
+		ci.Created = value
+	case "CreatorComment":
+		ci.CreatorComment = value
+
+	// tag for going on to package section
+	case "PackageName":
+		// error if last file does not have an identifier
+		// this may be a null case: can we ever have a "last file" in
+		// the "creation info" state? should go on to "file" state
+		// even when parsing unpackaged files.
+		if parser.file != nil && parser.file.FileSPDXIdentifier == nullSpdxElementId2_2 {
+			return fmt.Errorf("file with FileName %s does not have SPDX identifier", parser.file.FileName)
+		}
+		parser.st = psPackage2_2
+		parser.pkg = &v2_2.Package{
+			FilesAnalyzed:             true,
+			IsFilesAnalyzedTagPresent: false,
+		}
+		return parser.parsePairFromPackage2_2(tag, value)
+	// tag for going on to _unpackaged_ file section
+	case "FileName":
+		// leave pkg as nil, so that packages will be placed in Files
+		parser.st = psFile2_2
+		parser.pkg = nil
+		return parser.parsePairFromFile2_2(tag, value)
+	// tag for going on to other license section
+	case "LicenseID":
+		parser.st = psOtherLicense2_2
+		return parser.parsePairFromOtherLicense2_2(tag, value)
+	// tag for going on to review section (DEPRECATED)
+	case "Reviewer":
+		parser.st = psReview2_2
+		return parser.parsePairFromReview2_2(tag, value)
+	// for relationship tags, pass along but don't change state
+	case "Relationship":
+		parser.rln = &v2_2.Relationship{}
+		parser.doc.Relationships = append(parser.doc.Relationships, parser.rln)
+		return parser.parsePairForRelationship2_2(tag, value)
+	case "RelationshipComment":
+		return parser.parsePairForRelationship2_2(tag, value)
+	// for annotation tags, pass along but don't change state
+	case "Annotator":
+		parser.ann = &v2_2.Annotation{}
+		parser.doc.Annotations = append(parser.doc.Annotations, parser.ann)
+		return parser.parsePairForAnnotation2_2(tag, value)
+	case "AnnotationDate":
+		return parser.parsePairForAnnotation2_2(tag, value)
+	case "AnnotationType":
+		return parser.parsePairForAnnotation2_2(tag, value)
+	case "SPDXREF":
+		return parser.parsePairForAnnotation2_2(tag, value)
+	case "AnnotationComment":
+		return parser.parsePairForAnnotation2_2(tag, value)
+	default:
+		return fmt.Errorf("received unknown tag %v in CreationInfo section", tag)
+	}
+
+	return nil
+}
+
+// ===== Helper functions =====
+
+func extractExternalDocumentReference(value string) (string, string, string, string, error) {
+	sp := strings.Split(value, " ")
+	// remove any that are just whitespace
+	keepSp := []string{}
+	for _, s := range sp {
+		ss := strings.TrimSpace(s)
+		if ss != "" {
+			keepSp = append(keepSp, ss)
+		}
+	}
+
+	var documentRefID, uri, alg, checksum string
+
+	// now, should have 4 items (or 3, if Alg and Checksum were joined)
+	// and should be able to map them
+	if len(keepSp) == 4 {
+		documentRefID = keepSp[0]
+		uri = keepSp[1]
+		alg = keepSp[2]
+		// check that colon is present for alg, and remove it
+		if !strings.HasSuffix(alg, ":") {
+			return "", "", "", "", fmt.Errorf("algorithm does not end with colon")
+		}
+		alg = strings.TrimSuffix(alg, ":")
+		checksum = keepSp[3]
+	} else if len(keepSp) == 3 {
+		documentRefID = keepSp[0]
+		uri = keepSp[1]
+		// split on colon into alg and checksum
+		parts := strings.SplitN(keepSp[2], ":", 2)
+		if len(parts) != 2 {
+			return "", "", "", "", fmt.Errorf("missing colon separator between algorithm and checksum")
+		}
+		alg = parts[0]
+		checksum = parts[1]
+	} else {
+		return "", "", "", "", fmt.Errorf("expected 4 elements, got %d", len(keepSp))
+	}
+
+	// additionally, we should be able to parse the first element as a
+	// DocumentRef- ID string, and we should remove that prefix
+	if !strings.HasPrefix(documentRefID, "DocumentRef-") {
+		return "", "", "", "", fmt.Errorf("expected first element to have DocumentRef- prefix")
+	}
+	documentRefID = strings.TrimPrefix(documentRefID, "DocumentRef-")
+	if documentRefID == "" {
+		return "", "", "", "", fmt.Errorf("document identifier has nothing after prefix")
+	}
+
+	return documentRefID, uri, alg, checksum, nil
+}