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options.go
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options.go
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package spiff
import (
"fmt"
"github.com/mandelsoft/goutils/errors"
"github.com/mandelsoft/goutils/sliceutils"
"github.com/mandelsoft/spiff/spiffing"
"github.com/mandelsoft/vfs/pkg/cwdfs"
"github.com/mandelsoft/vfs/pkg/vfs"
"github.com/open-component-model/ocm/pkg/contexts/datacontext"
"github.com/open-component-model/ocm/pkg/contexts/datacontext/attrs/vfsattr"
"github.com/open-component-model/ocm/pkg/utils"
)
type Option interface {
ApplyToRequest(r *Request) error
}
type Options []Option
func (o *Options) Add(opt Option) *Options {
if opt != nil {
*o = append(*o, opt)
}
return o
}
func (o Options) ApplyToRequest(r *Request) error {
for _, o := range o {
if o != nil {
err := o.ApplyToRequest(r)
if err != nil {
return err
}
}
}
return nil
}
func GetRequest(opts ...Option) (*Request, error) {
req := &Request{Mode: spiffing.MODE_DEFAULT}
err := Options(opts).ApplyToRequest(req)
if err != nil {
return nil, err
}
return req, nil
}
type OptionFunction func(r *Request) error
func (f OptionFunction) ApplyToRequest(r *Request) error {
return f(r)
}
func FileSystem(fs vfs.FileSystem) OptionFunction {
return func(r *Request) error {
r.FileSystem = utils.FileSystem(fs)
return nil
}
}
func Context(ctx datacontext.Context) OptionFunction {
return FileSystem(vfsattr.Get(ctx))
}
func Values(values interface{}) OptionFunction {
return func(r *Request) error {
r.Values = values
return nil
}
}
func Functions(functions spiffing.Functions) OptionFunction {
return func(r *Request) error {
r.Functions = functions
return nil
}
}
func ValuesNode(values string) OptionFunction {
return func(r *Request) error {
r.ValuesNode = values
return nil
}
}
func StubData(name string, data []byte) OptionFunction {
return func(r *Request) error {
if len(data) > 0 {
r.Stubs = append(r.Stubs, spiffing.NewSourceData(name, data))
}
return nil
}
}
func TemplateData(name string, data []byte) OptionFunction {
return func(r *Request) error {
if len(data) == 0 {
return fmt.Errorf("no template data for " + name)
}
r.Template = spiffing.NewSourceData(name, data)
return nil
}
}
func StubFile(path string, fss ...vfs.FileSystem) OptionFunction {
return func(r *Request) error {
r.Stubs = append(r.Stubs, spiffing.NewSourceFile(path, utils.FileSystem(sliceutils.CopyAppend(fss, r.FileSystem)...)))
return nil
}
}
func TemplateFile(path string, fss ...vfs.FileSystem) OptionFunction {
return func(r *Request) error {
r.Template = spiffing.NewSourceFile(path, utils.FileSystem(sliceutils.CopyAppend(fss, r.FileSystem)...))
return nil
}
}
func WorkDir(path string) OptionFunction {
return func(r *Request) error {
fs, err := cwdfs.New(r.FileSystem, path)
if err != nil {
return errors.Wrapf(err, "cannot set working directory %s", path)
}
r.FileSystem = fs
return nil
}
}
func Mode(m int) OptionFunction {
return func(r *Request) error {
r.Mode = m
return nil
}
}
func Validated(schemedata []byte, opts ...Option) Option {
if schemedata == nil {
return Options(opts)
}
return OptionFunction(func(r *Request) error {
tmp := *r
tmp.Template = nil
tmp.Stubs = nil
err := Options(opts).ApplyToRequest(&tmp)
if err != nil {
return err
}
if tmp.Template != nil {
err = ValidateSourceByScheme(tmp.Template, schemedata)
if err != nil {
return errors.Wrapf(err, "template %s", tmp.Template.Name())
}
}
for _, s := range tmp.Stubs {
err = ValidateSourceByScheme(s, schemedata)
if err != nil {
return errors.Wrapf(err, "validating %s", s.Name())
}
}
return Options(opts).ApplyToRequest(r)
})
}