Move prototype 69-dagger-archon to top-level

Signed-off-by: Solomon Hykes <sh.github.6811@hykes.org>
2020-12-29 18:45:16 -08:00
commit 30f75da114
42 changed files with 3955 additions and 0 deletions
--- a/dagger/json.go
+++ b/dagger/json.go
@@ -0,0 +1,138 @@
+package dagger
+
+import (
+	"fmt"
+
+	"cuelang.org/go/cue"
+	cuejson "cuelang.org/go/encoding/json"
+	"github.com/KromDaniel/jonson"
+	"github.com/pkg/errors"
+)
+
+type JSON []byte
+
+func (s JSON) Get(path ...string) ([]byte, error) {
+	if s == nil {
+		s = []byte("{}")
+	}
+	var (
+		root *jonson.JSON
+	)
+	root, err := jonson.Parse(s)
+	if err != nil {
+		return nil, errors.Wrap(err, "parse root json")
+	}
+	pointer := root
+	for _, key := range path {
+		// FIXME: we can traverse maps but not arrays (need to handle int keys)
+		pointer = pointer.At(key)
+	}
+	// FIXME: use indent function from stdlib
+	return pointer.ToJSON()
+}
+
+func (s JSON) Unset(path ...string) (JSON, error) {
+	if s == nil {
+		s = []byte("{}")
+	}
+	var (
+		root *jonson.JSON
+	)
+	root, err := jonson.Parse(s)
+	if err != nil {
+		return nil, errors.Wrap(err, "unset: parse root json")
+	}
+	var (
+		pointer = root
+		pathDir []string
+	)
+	if len(path) > 0 {
+		pathDir = path[:len(path)-1]
+	}
+	for _, key := range pathDir {
+		pointer = pointer.At(key)
+	}
+	if len(path) == 0 {
+		pointer.Set(nil)
+	} else {
+		key := path[len(path)-1]
+		pointer.DeleteMapKey(key)
+	}
+	return root.ToJSON()
+}
+
+func (s JSON) Set(valueJSON []byte, path ...string) (JSON, error) {
+	if s == nil {
+		s = []byte("{}")
+	}
+	var (
+		root  *jonson.JSON
+		value *jonson.JSON
+	)
+	root, err := jonson.Parse(s)
+	if err != nil {
+		return nil, errors.Wrap(err, "parse root json")
+	}
+	value, err = jonson.Parse(valueJSON)
+	if err != nil {
+		return nil, errors.Wrapf(err, "SetJSON: parse value json: |%s|", valueJSON)
+	}
+	var (
+		pointer = root
+		pathDir []string
+	)
+	if len(path) > 0 {
+		pathDir = path[:len(path)-1]
+	}
+	for _, key := range pathDir {
+		if !pointer.ObjectKeyExists(key) {
+			pointer.MapSet(key, jonson.NewEmptyJSONMap())
+		}
+		pointer = pointer.At(key)
+	}
+	if len(path) == 0 {
+		pointer.Set(value)
+	} else {
+		key := path[len(path)-1]
+		pointer.MapSet(key, value)
+	}
+	return root.ToJSON()
+}
+
+func (s JSON) Merge(layers ...JSON) (JSON, error) {
+	r := new(cue.Runtime)
+	var resultInst *cue.Instance
+	for i, l := range append([]JSON{s}, layers...) {
+		if l == nil {
+			continue
+		}
+		filename := fmt.Sprintf("%d", i)
+		inst, err := cuejson.Decode(r, filename, []byte(l))
+		if err != nil {
+			return nil, err
+		}
+		if resultInst == nil {
+			resultInst = inst
+		} else {
+			resultInst, err = resultInst.Fill(inst.Value())
+			if err != nil {
+				return nil, err
+			}
+			if resultInst.Err != nil {
+				return nil, resultInst.Err
+			}
+		}
+	}
+	b, err := resultInst.Value().MarshalJSON()
+	if err != nil {
+		return nil, err
+	}
+	return JSON(b), nil
+}
+
+func (s JSON) String() string {
+	if s == nil {
+		return "{}"
+	}
+	return string(s)
+}