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resources.functions: improve validation

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This commit is contained in:
Andreas Deininger 2023-03-16 16:56:05 +01:00 committed by Bjørn Erik Pedersen
parent 891b2918d2
commit 05c095a0e6
2 changed files with 30 additions and 6 deletions
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2
resources/resource_transformers/integrity/integrity.go
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@ -91,7 +91,7 @@ func newHash(algo string) (hash.Hash, error) {
case "sha512":
return sha512.New(), nil
default:
return nil, fmt.Errorf("unsupported crypto algo: %q, use either md5, sha256, sha384 or sha512", algo)
return nil, fmt.Errorf("unsupported hash algorithm: %q, use either md5, sha256, sha384 or sha512", algo)
}
}

34
tpl/resources/resources.go
View file

@ -145,7 +145,7 @@ func (ns *Namespace) Get(filename any) resource.Resource {
//
// A second argument may be provided with an option map.
//
// Note: This method does not return any error as a second argument,
// Note: This method does not return any error as a second return value,
// for any error situations the error can be checked in .Err.
func (ns *Namespace) GetRemote(args ...any) resource.Resource {
get := func(args ...any) (resource.Resource, error) {
@ -153,6 +153,10 @@ func (ns *Namespace) GetRemote(args ...any) resource.Resource {
return nil, errors.New("must provide an URL")
}
if len(args) > 2 {
return nil, errors.New("must not provide more arguments than URL and options")
}
urlstr, err := cast.ToStringE(args[0])
if err != nil {
return nil, err
@ -302,8 +306,12 @@ func (ns *Namespace) ExecuteAsTemplate(ctx context.Context, args ...any) (resour
// Fingerprint transforms the given Resource with a MD5 hash of the content in
// the RelPermalink and Permalink.
func (ns *Namespace) Fingerprint(args ...any) (resource.Resource, error) {
if len(args) < 1 || len(args) > 2 {
return nil, errors.New("must provide a Resource and (optional) crypto algo")
if len(args) < 1 {
return nil, errors.New("must provide a Resource object")
}
if len(args) > 2 {
return nil, errors.New("must not provide more arguments than Resource and hash algorithm")
}
var algo string
@ -332,9 +340,15 @@ func (ns *Namespace) Minify(r resources.ResourceTransformer) (resource.Resource,
return ns.minifyClient.Minify(r)
}
// ToCSS converts the given Resource to CSS. You can optional provide an Options
// object or a target path (string) as first argument.
// ToCSS converts the given Resource to CSS. You can optional provide an Options object
// as second argument. As an option, you can e.g. specify e.g. the target path (string)
// for the converted CSS resource.
func (ns *Namespace) ToCSS(args ...any) (resource.Resource, error) {
if len(args) > 2 {
return nil, errors.New("must not provide more arguments than resource object and options")
}
const (
// Transpiler implementation can be controlled from the client by
// setting the 'transpiler' option.
@ -404,6 +418,11 @@ func (ns *Namespace) ToCSS(args ...any) (resource.Resource, error) {
// PostCSS processes the given Resource with PostCSS
func (ns *Namespace) PostCSS(args ...any) (resource.Resource, error) {
if len(args) > 2 {
return nil, errors.New("must not provide more arguments than resource object and options")
}
r, m, err := resourcehelpers.ResolveArgs(args)
if err != nil {
return nil, err
@ -419,6 +438,11 @@ func (ns *Namespace) PostProcess(r resource.Resource) (postpub.PostPublishedReso
// Babel processes the given Resource with Babel.
func (ns *Namespace) Babel(args ...any) (resource.Resource, error) {
if len(args) > 2 {
return nil, errors.New("must not provide more arguments than resource object and options")
}
r, m, err := resourcehelpers.ResolveArgs(args)
if err != nil {
return nil, err