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parse_pnpm_lock.go
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parse_pnpm_lock.go
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package javascript
import (
"context"
"fmt"
"io"
"regexp"
"strconv"
"strings"
"gopkg.in/yaml.v3"
"github.com/anchore/syft/internal/log"
"github.com/anchore/syft/syft/artifact"
"github.com/anchore/syft/syft/file"
"github.com/anchore/syft/syft/pkg"
"github.com/anchore/syft/syft/pkg/cataloger/generic"
)
// integrity check
var _ generic.Parser = parsePnpmLock
type pnpmLockYaml struct {
Version string `json:"lockfileVersion" yaml:"lockfileVersion"`
Dependencies map[string]interface{} `json:"dependencies" yaml:"dependencies"`
Packages map[string]interface{} `json:"packages" yaml:"packages"`
}
func parsePnpmLock(_ context.Context, resolver file.Resolver, _ *generic.Environment, reader file.LocationReadCloser) ([]pkg.Package, []artifact.Relationship, error) {
bytes, err := io.ReadAll(reader)
if err != nil {
return nil, nil, fmt.Errorf("failed to load pnpm-lock.yaml file: %w", err)
}
var pkgs []pkg.Package
var lockFile pnpmLockYaml
if err := yaml.Unmarshal(bytes, &lockFile); err != nil {
return nil, nil, fmt.Errorf("failed to parse pnpm-lock.yaml file: %w", err)
}
lockVersion, _ := strconv.ParseFloat(lockFile.Version, 64)
for name, info := range lockFile.Dependencies {
version := ""
switch info := info.(type) {
case string:
version = info
case map[string]interface{}:
v, ok := info["version"]
if !ok {
break
}
ver, ok := v.(string)
if ok {
version = parseVersion(ver)
}
default:
log.Tracef("unsupported pnpm dependency type: %+v", info)
continue
}
if hasPkg(pkgs, name, version) {
continue
}
pkgs = append(pkgs, newPnpmPackage(resolver, reader.Location, name, version))
}
packageNameRegex := regexp.MustCompile(`^/?([^(]*)(?:\(.*\))*$`)
splitChar := "/"
if lockVersion >= 6.0 {
splitChar = "@"
}
// parse packages from packages section of pnpm-lock.yaml
for nameVersion := range lockFile.Packages {
nameVersion = packageNameRegex.ReplaceAllString(nameVersion, "$1")
nameVersionSplit := strings.Split(strings.TrimPrefix(nameVersion, "/"), splitChar)
// last element in split array is version
version := nameVersionSplit[len(nameVersionSplit)-1]
// construct name from all array items other than last item (version)
name := strings.Join(nameVersionSplit[:len(nameVersionSplit)-1], splitChar)
if hasPkg(pkgs, name, version) {
continue
}
pkgs = append(pkgs, newPnpmPackage(resolver, reader.Location, name, version))
}
pkg.Sort(pkgs)
return pkgs, nil, nil
}
func hasPkg(pkgs []pkg.Package, name, version string) bool {
for _, p := range pkgs {
if p.Name == name && p.Version == version {
return true
}
}
return false
}
func parseVersion(version string) string {
return strings.SplitN(version, "(", 2)[0]
}