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package pkglint
import "netbsd.org/pkglint/licenses"
type LicenseChecker struct {
MkLines MkLines
MkLine MkLine
}
func (lc *LicenseChecker) Check(value string, op MkOperator) {
expanded := resolveVariableRefs(lc.MkLines, value) // For ${PERL5_LICENSE}
cond := licenses.Parse(ifelseStr(op == opAssignAppend, "append-placeholder ", "") + expanded)
if cond == nil {
if op == opAssign {
lc.MkLine.Errorf("Parse error for license condition %q.", value)
} else {
lc.MkLine.Errorf("Parse error for appended license condition %q.", value)
}
return
}
cond.Walk(lc.checkNode)
}
func (lc *LicenseChecker) checkName(license string) {
licenseFile := ""
if G.Pkg != nil {
if mkline := G.Pkg.vars.FirstDefinition("LICENSE_FILE"); mkline != nil {
licenseFile = G.Pkg.File(mkline.ResolveVarsInRelativePath(mkline.Value()))
}
}
if licenseFile == "" {
licenseFile = G.Pkgsrc.File("licenses/" + license)
G.InterPackage.UseLicense(license)
}
if !fileExists(licenseFile) {
lc.MkLine.Warnf("License file %s does not exist.", cleanpath(licenseFile))
}
switch license {
case "fee-based-commercial-use",
"no-commercial-use",
"no-profit",
"no-redistribution",
"shareware":
lc.MkLine.Errorf("License %q must not be used.", license)
lc.MkLine.Explain(
"Instead of using these deprecated licenses, extract the actual",
"license from the package into the pkgsrc/licenses/ directory",
"and define LICENSE to that filename.",
"",
seeGuide("Handling licenses", "handling-licenses"))
}
}
func (lc *LicenseChecker) checkNode(cond *licenses.Condition) {
if name := cond.Name; name != "" && name != "append-placeholder" {
lc.checkName(name)
return
}
if cond.And && cond.Or {
lc.MkLine.Errorf("AND and OR operators in license conditions can only be combined using parentheses.")
lc.MkLine.Explain(
"Examples for valid license conditions are:",
"",
"\tlicense1 AND license2 AND (license3 OR license4)",
"\t(((license1 OR license2) AND (license3 OR license4)))")
}
}
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