mirror of
https://github.com/anchore/syft.git
synced 2026-02-12 02:26:42 +01:00
c94d1ccf1c
--------- Signed-off-by: Christopher Phillips <32073428+spiffcs@users.noreply.github.com>
65 lines
2.1 KiB
Go
65 lines
2.1 KiB
Go
package spdxlicense
|
|
|
|
import (
|
|
"strings"
|
|
)
|
|
|
|
// https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/#license-short-name
|
|
// License generated in license_list.go uses a regular expression to help resolve cases where
|
|
// x.0.0 and x are supplied as version numbers. For SPDX compatibility, versions with trailing
|
|
// dot-zeroes are considered to be equivalent to versions without (e.g., “2.0.0” is considered equal to “2.0” and “2”).
|
|
// EX: gpl-2+ ---> GPL-2.0+
|
|
// EX: gpl-2.0.0-only ---> GPL-2.0-only
|
|
// See the debian link for more details on the spdx license differences
|
|
|
|
const (
|
|
LicenseRefPrefix = "LicenseRef-" // prefix for non-standard licenses
|
|
)
|
|
|
|
//go:generate go run ./generate
|
|
|
|
// ID returns the canonical license ID for the given license ID
|
|
// Note: this function is only concerned with returning a best match of an SPDX license ID
|
|
// SPDX Expressions will be handled by a parent package which will call this function
|
|
func ID(id string) (value string, exists bool) {
|
|
// first look for a canonical license
|
|
if value, exists := licenseIDs[cleanLicenseID(id)]; exists {
|
|
return value, exists
|
|
}
|
|
// we did not find, so treat it as a separate license
|
|
return "", false
|
|
}
|
|
|
|
func cleanLicenseID(id string) string {
|
|
id = strings.TrimSpace(id)
|
|
id = strings.ToLower(id)
|
|
return strings.ReplaceAll(id, "-", "")
|
|
}
|
|
|
|
// LicenseInfo contains license ID and name
|
|
type LicenseInfo struct {
|
|
ID string
|
|
}
|
|
|
|
// LicenseByURL returns the license ID and name for a given URL from the SPDX license list.
|
|
// The URL should match one of the URLs in the seeAlso field of an SPDX license.
|
|
// The scheme (http:// or https://) is stripped before lookup, so both schemes match.
|
|
func LicenseByURL(url string) (LicenseInfo, bool) {
|
|
url = strings.TrimSpace(url)
|
|
url = stripScheme(url)
|
|
if id, exists := urlToLicense[url]; exists {
|
|
return LicenseInfo{
|
|
ID: id,
|
|
}, true
|
|
}
|
|
return LicenseInfo{}, false
|
|
}
|
|
|
|
// stripScheme removes http:// or https:// prefix from a URL.
|
|
// This allows a single map entry to match both schemes.
|
|
func stripScheme(url string) string {
|
|
url = strings.TrimPrefix(url, "https://")
|
|
url = strings.TrimPrefix(url, "http://")
|
|
return url
|
|
}
|