feat: replace composer.lock parser

Author: G-Rath

pkg/lockfile/parse-composer-lock.go

@@ -1,67 +1,11 @@
 package lockfile
 
 import (
-	"encoding/json"
-	"fmt"
-	"os"
+	"github.com/google/osv-scalibr/extractor/filesystem/language/php/composerlock"
 )
 
-type ComposerPackage struct {
-	Name    string `json:"name"`
-	Version string `json:"version"`
-	Dist    struct {
-		Reference string `json:"reference"`
-	} `json:"dist"`
-}
-
-type ComposerLock struct {
-	Packages    []ComposerPackage `json:"packages"`
-	PackagesDev []ComposerPackage `json:"packages-dev"`
-}
-
 const ComposerEcosystem Ecosystem = "Packagist"
 
 func ParseComposerLock(pathToLockfile string) ([]PackageDetails, error) {
-	var parsedLockfile *ComposerLock
-
-	lockfileContents, err := os.ReadFile(pathToLockfile)
-
-	if err != nil {
-		return []PackageDetails{}, fmt.Errorf("could not read %s: %w", pathToLockfile, err)
-	}
-
-	err = json.Unmarshal(lockfileContents, &parsedLockfile)
-
-	if err != nil {
-		return []PackageDetails{}, fmt.Errorf("could not parse %s: %w", pathToLockfile, err)
-	}
-
-	packages := make(
-		[]PackageDetails,
-		0,
-		// len cannot return negative numbers, but the types can't reflect that
-		uint64(len(parsedLockfile.Packages))+uint64(len(parsedLockfile.PackagesDev)),
-	)
-
-	for _, composerPackage := range parsedLockfile.Packages {
-		packages = append(packages, PackageDetails{
-			Name:      composerPackage.Name,
-			Version:   composerPackage.Version,
-			Commit:    composerPackage.Dist.Reference,
-			Ecosystem: ComposerEcosystem,
-			CompareAs: ComposerEcosystem,
-		})
-	}
-
-	for _, composerPackage := range parsedLockfile.PackagesDev {
-		packages = append(packages, PackageDetails{
-			Name:      composerPackage.Name,
-			Version:   composerPackage.Version,
-			Commit:    composerPackage.Dist.Reference,
-			Ecosystem: ComposerEcosystem,
-			CompareAs: ComposerEcosystem,
-		})
-	}
-
-	return packages, nil
+	return extract(pathToLockfile, composerlock.New(), ComposerEcosystem)
 }