feat(validator): add CUE file validation support

.pre-commit-hooks.yaml

@@ -3,8 +3,8 @@
   description: Validate configuration file syntax and schemas. Only changed files are validated.
   entry: validator
   language: golang
-  types_or: [json, yaml, toml, xml, ini, csv, hcl, terraform]
-  files: '\.(json|jsonc|yaml|yml|toml|xml|ini|csv|hcl|tf|tfvars|env|hocon|properties|plist|editorconfig|toon|sarif)$'
+  types_or: [json, yaml, toml, xml, ini, csv, hcl, terraform, cue]
+  files: '\.(json|jsonc|yaml|yml|toml|xml|ini|csv|hcl|tf|tfvars|env|hocon|properties|plist|editorconfig|toon|sarif|cue)$'
 
 - id: config-file-validator-full
   name: config-file-validator-full

go.mod

@@ -3,6 +3,7 @@ module github.com/Boeing/config-file-validator/v2
 go 1.26.1
 
 require (
+	cuelang.org/go v0.17.0-0.dev.0.20260319114053-b546fdd66808
 	github.com/bmatcuk/doublestar/v4 v4.10.0
 	github.com/editorconfig/editorconfig-core-go/v2 v2.6.4
 	github.com/fatih/color v1.19.0
@@ -25,6 +26,8 @@ require (
 	howett.net/plist v1.0.1
 )
 
+require github.com/cockroachdb/apd/v3 v3.2.1 // indirect
+
 require (
 	github.com/Boeing/go-just v0.0.0
 	github.com/agext/levenshtein v1.2.1 // indirect
@@ -35,13 +38,11 @@ require (
 	github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99 // indirect
-	github.com/lestrrat-go/helium v0.0.1
 	github.com/lestrrat-go/pdebug v0.0.0-20210111095411-35b07dbf089b // indirect
 	github.com/mattn/go-colorable v0.1.14 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
-	github.com/mitchellh/go-wordwrap v0.0.0-20150314170334-ad45545899c7 // indirect
+	github.com/mitchellh/go-wordwrap v1.0.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/tailscale/hujson v0.0.0-20260302212456-ecc657c15afd
 	github.com/xeipuuv/gojsonpointer v0.0.0-20180127040702-4e3ac2762d5f // indirect
 	github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415 // indirect
 	github.com/zclconf/go-cty v1.13.0 // indirect

go.sum

@@ -1,3 +1,7 @@
+cuelabs.dev/go/oci/ociregistry v0.0.0-20251212221603-3adeb8663819 h1:Zh+Ur3OsoWpvALHPLT45nOekHkgOt+IOfutBbPqM17I=
+cuelabs.dev/go/oci/ociregistry v0.0.0-20251212221603-3adeb8663819/go.mod h1:WjmQxb+W6nVNCgj8nXrF24lIz95AHwnSl36tpjDZSU8=
+cuelang.org/go v0.17.0-0.dev.0.20260319114053-b546fdd66808 h1:KapZDGziNorvWuvRDklw/QiGGthXn6bZ9+B9dt/+Yzo=
+cuelang.org/go v0.17.0-0.dev.0.20260319114053-b546fdd66808/go.mod h1:Lcex1FTzroFU0zv0Hl0e3sHIA3cuYrbeEp54jRlrNls=
 github.com/agext/levenshtein v1.2.1 h1:QmvMAjj2aEICytGiWzmxoE0x2KZvE0fvmqMOfy2tjT8=
 github.com/agext/levenshtein v1.2.1/go.mod h1:JEDfjyjHDjOF/1e4FlBE/PkbqA9OfWu2ki2W0IB5558=
 github.com/apparentlymart/go-textseg/v13 v13.0.0 h1:Y+KvPE1NYz0xl601PVImeQfFyEy6iT90AvPUL1NNfNw=
@@ -6,13 +10,17 @@ github.com/apparentlymart/go-textseg/v15 v15.0.0 h1:uYvfpb3DyLSCGWnctWKGj857c6ew
 github.com/apparentlymart/go-textseg/v15 v15.0.0/go.mod h1:K8XmNZdhEBkdlyDdvbmmsvpAG721bKi0joRfFdHIWJ4=
 github.com/bmatcuk/doublestar/v4 v4.10.0 h1:zU9WiOla1YA122oLM6i4EXvGW62DvKZVxIe6TYWexEs=
 github.com/bmatcuk/doublestar/v4 v4.10.0/go.mod h1:xBQ8jztBU6kakFMg+8WGxn0c6z1fTSPVIjEY1Wr7jzc=
+github.com/cockroachdb/apd/v3 v3.2.1 h1:U+8j7t0axsIgvQUqthuNm82HIrYXodOV2iWLWtEaIwg=
+github.com/cockroachdb/apd/v3 v3.2.1/go.mod h1:klXJcjp+FffLTHlhIG69tezTDvdP065naDsHzKhYSqc=
 github.com/cyphar/filepath-securejoin v0.4.1 h1:JyxxyPEaktOD+GAnqIqTf9A8tHyAG22rowi7HkoSU1s=
 github.com/cyphar/filepath-securejoin v0.4.1/go.mod h1:Sdj7gXlvMcPZsbhwhQ33GguGLDGQL7h7bg04C/+u9jI=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/editorconfig/editorconfig-core-go/v2 v2.6.4 h1:CHwUbBVVyKWRX9kt5A/OtwhYUJB32DrFp9xzmjR6cac=
 github.com/editorconfig/editorconfig-core-go/v2 v2.6.4/go.mod h1:JWRVKHdVW+dkv6F8p+xGCa6a+TyMrqsFbFkSs/aQkrQ=
+github.com/emicklei/proto v1.14.3 h1:zEhlzNkpP8kN6utonKMzlPfIvy82t5Kb9mufaJxSe1Q=
+github.com/emicklei/proto v1.14.3/go.mod h1:rn1FgRS/FANiZdD2djyH7TMA9jdRDcYQ9IEN9yvjX0A=
 github.com/fatih/color v1.19.0 h1:Zp3PiM21/9Ld6FzSKyL5c/BULoe/ONr9KlbYVOfG8+w=
 github.com/fatih/color v1.19.0/go.mod h1:zNk67I0ZUT1bEGsSGyCZYZNrHuTkJJB+r6Q9VuMi0LE=
 github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376 h1:+zs/tPmkDkHx3U66DAb0lQFJrpS6731Oaa12ikc+DiI=
@@ -50,10 +58,14 @@ github.com/mattn/go-colorable v0.1.14 h1:9A9LHSqF/7dyVVX6g0U9cwm9pG3kP9gSzcuIPHP
 github.com/mattn/go-colorable v0.1.14/go.mod h1:6LmQG8QLFO4G5z1gPvYEzlUgJ2wF+stgPZH1UqBm1s8=
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
-github.com/mitchellh/go-wordwrap v0.0.0-20150314170334-ad45545899c7 h1:DpOJ2HYzCv8LZP15IdmG+YdwD2luVPHITV96TkirNBM=
-github.com/mitchellh/go-wordwrap v0.0.0-20150314170334-ad45545899c7/go.mod h1:ZXFpozHsX6DPmq2I0TCekCxypsnAUbP2oI0UX1GXzOo=
+github.com/mitchellh/go-wordwrap v1.0.1 h1:TLuKupo69TCn6TQSyGxwI1EblZZEsQ0vMlAFQflz0v0=
+github.com/mitchellh/go-wordwrap v1.0.1/go.mod h1:R62XHJLzvMFRBbcrT7m7WgmE1eOyTSsCt+hzestvNj0=
 github.com/onsi/gomega v1.34.1 h1:EUMJIKUjM8sKjYbtxQI9A4z2o+rruxnzNvpknOXie6k=
 github.com/onsi/gomega v1.34.1/go.mod h1:kU1QgUvBDLXBJq618Xvm2LUX6rSAfRaFRTcdOeDLwwY=
+github.com/opencontainers/go-digest v1.0.0 h1:apOUWs51W5PlhuyGyz9FCeeBIOUDA/6nW8Oi/yOhh5U=
+github.com/opencontainers/go-digest v1.0.0/go.mod h1:0JzlMkj0TRzQZfJkVvzbP0HBR3IKzErnv2BNG4W4MAM=
+github.com/opencontainers/image-spec v1.1.1 h1:y0fUlFfIZhPF1W537XOLg0/fcx6zcHCJwooC2xJA040=
+github.com/opencontainers/image-spec v1.1.1/go.mod h1:qpqAh3Dmcf36wStyyWU+kCeDgrGnAve2nCC8+7h8Q0M=
 github.com/owenrumney/go-sarif/v3 v3.3.0 h1:p5oSxEV0uPWBRpAspTmwWr4t1YZyKUpdoFzSB7WE90A=
 github.com/owenrumney/go-sarif/v3 v3.3.0/go.mod h1:72MaugkExDexbSauRuPq6BvUAAqAX0TwoNYMIQyZCMw=
 github.com/pelletier/go-toml/v2 v2.3.0 h1:k59bC/lIZREW0/iVaQR8nDHxVq8OVlIzYCOJf421CaM=
@@ -62,6 +74,8 @@ github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/protocolbuffers/txtpbfmt v0.0.0-20260217160748-a481f6a22f94 h1:2PC6Ql3jipz1KvBlqUHjjk6v4aMwE86mfDu1XMH0LR8=
+github.com/protocolbuffers/txtpbfmt v0.0.0-20260217160748-a481f6a22f94/go.mod h1:JSbkp0BviKovYYt9XunS95M3mLPibE9bGg+Y95DsEEY=
 github.com/rogpeppe/go-internal v1.14.1 h1:UQB4HGPB6osV0SQTLymcB4TgvyWu6ZyliaW0tI/otEQ=
 github.com/rogpeppe/go-internal v1.14.1/go.mod h1:MaRKkUm5W0goXpeCfT7UZI6fk/L7L7so1lCWt35ZSgc=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
@@ -89,12 +103,16 @@ github.com/zclconf/go-cty v1.13.0 h1:It5dfKTTZHe9aeppbNOda3mN7Ag7sg6QkBNm6TkyFa0
 github.com/zclconf/go-cty v1.13.0/go.mod h1:YKQzy/7pZ7iq2jNFzy5go57xdxdWoLLpaEp4u238AE0=
 github.com/zclconf/go-cty-debug v0.0.0-20240509010212-0d6042c53940 h1:4r45xpDWB6ZMSMNJFMOjqrGHynW3DIBuR2H9j0ug+Mo=
 github.com/zclconf/go-cty-debug v0.0.0-20240509010212-0d6042c53940/go.mod h1:CmBdvvj3nqzfzJ6nTCIwDTPZ56aVGvDrmztiO5g3qrM=
+go.yaml.in/yaml/v3 v3.0.4 h1:tfq32ie2Jv2UxXFdLJdh3jXuOzWiL1fo0bu/FbuKpbc=
+go.yaml.in/yaml/v3 v3.0.4/go.mod h1:DhzuOOF2ATzADvBadXxruRBLzYTpT36CKvDb3+aBEFg=
 golang.org/x/exp v0.0.0-20240719175910-8a7402abbf56 h1:2dVuKD2vS7b0QIHQbpyTISPd0LeHDbnYEryqj5Q1ug8=
 golang.org/x/exp v0.0.0-20240719175910-8a7402abbf56/go.mod h1:M4RDyNAINzryxdtnbRXRL/OHtkFuWGRjvuhBJpk2IlY=
 golang.org/x/mod v0.34.0 h1:xIHgNUUnW6sYkcM5Jleh05DvLOtwc6RitGHbDk4akRI=
 golang.org/x/mod v0.34.0/go.mod h1:ykgH52iCZe79kzLLMhyCUzhMci+nQj+0XkbXpNYtVjY=
 golang.org/x/net v0.52.0 h1:He/TN1l0e4mmR3QqHMT2Xab3Aj3L9qjbhRm78/6jrW0=
 golang.org/x/net v0.52.0/go.mod h1:R1MAz7uMZxVMualyPXb+VaqGSa3LIaUqk0eEt3w36Sw=
+golang.org/x/oauth2 v0.35.0 h1:Mv2mzuHuZuY2+bkyWXIHMfhNdJAdwW3FuWeCPYN5GVQ=
+golang.org/x/oauth2 v0.35.0/go.mod h1:lzm5WQJQwKZ3nwavOZ3IS5Aulzxi68dUSgRHujetwEA=
 golang.org/x/sync v0.20.0 h1:e0PTpb7pjO8GAtTs2dQ6jYa5BWYlMuX047Dco/pItO4=
 golang.org/x/sync v0.20.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
@@ -104,18 +122,6 @@ golang.org/x/text v0.36.0 h1:JfKh3XmcRPqZPKevfXVpI1wXPTqbkE5f7JA92a55Yxg=
 golang.org/x/text v0.36.0/go.mod h1:NIdBknypM8iqVmPiuco0Dh6P5Jcdk8lJL0CUebqK164=
 golang.org/x/tools v0.43.0 h1:12BdW9CeB3Z+J/I/wj34VMl8X+fEXBxVR90JeMX5E7s=
 golang.org/x/tools v0.43.0/go.mod h1:uHkMso649BX2cZK6+RpuIPXS3ho2hZo4FVwfoy1vIk0=
-golang.org/x/mod v0.33.0 h1:tHFzIWbBifEmbwtGz65eaWyGiGZatSrT9prnU8DbVL8=
-golang.org/x/mod v0.33.0/go.mod h1:swjeQEj+6r7fODbD2cqrnje9PnziFuw4bmLbBZFrQ5w=
-golang.org/x/sync v0.20.0 h1:e0PTpb7pjO8GAtTs2dQ6jYa5BWYlMuX047Dco/pItO4=
-golang.org/x/sync v0.20.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
-golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.42.0 h1:omrd2nAlyT5ESRdCLYdm3+fMfNFE/+Rf4bDIQImRJeo=
-golang.org/x/sys v0.42.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
-golang.org/x/text v0.35.0 h1:JOVx6vVDFokkpaq1AEptVzLTpDe9KGpj5tR4/X+ybL8=
-golang.org/x/text v0.35.0/go.mod h1:khi/HExzZJ2pGnjenulevKNX1W67CUy0AsXcNubPGCA=
-golang.org/x/tools v0.42.0 h1:uNgphsn75Tdz5Ji2q36v/nsFSfR/9BRFvqhGBaJGd5k=
-golang.org/x/tools v0.42.0/go.mod h1:Ma6lCIwGZvHK6XtgbswSoWroEkhugApmsXyrUmBhfr0=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=

pkg/filetype/file_type.go

@@ -158,6 +158,12 @@ var JustfileFileType = FileType{
 	Validator: validator.JustfileValidator{},
 }
 
+var CueFileType = FileType{
+	Name:       "cue",
+	Extensions: arrToMap("cue"),
+	Validator:  validator.CueValidator{},
+}
+
 // extraKnownFiles contains manual entries not covered by Linguist.
 var extraKnownFiles = map[string][]string{
 	"ini": {
@@ -187,6 +193,7 @@ var fileTypeRegistry = map[string]*FileType{
 	"toon":       &ToonFileType,
 	"sarif":      &SarifFileType,
 	"justfile":   &JustfileFileType,
+	"cue":        &CueFileType,
 }
 
 // excludeKnownFiles lists Linguist entries to skip because we have
@@ -258,6 +265,7 @@ func init() {
 		SarifFileType,
 		JSONCFileType,
 		JustfileFileType,
+		CueFileType,
 	}
 }
 

pkg/validator/cue.go

@@ -0,0 +1,33 @@
+package validator
+
+import (
+	"errors"
+
+	cueerrors "cuelang.org/go/cue/errors"
+	"cuelang.org/go/cue/parser"
+)
+
+type CueValidator struct{}
+
+var _ Validator = CueValidator{}
+
+func (CueValidator) ValidateSyntax(b []byte) (bool, error) {
+	_, err := parser.ParseFile("input.cue", b)
+	if err == nil {
+		return true, nil
+	}
+
+	var cerr cueerrors.Error
+	if errors.As(err, &cerr) && cerr != nil {
+		pos := cerr.Position()
+		if pos.IsValid() {
+			return false, &ValidationError{
+				Err:    err,
+				Line:   pos.Line(),
+				Column: pos.Column(),
+			}
+		}
+	}
+
+	return false, err
+}

pkg/validator/validator_test.go

@@ -154,6 +154,8 @@ var testData = []struct {
 	{"validJustfile", []byte("default:\n    echo hello\n"), true, JustfileValidator{}},
 	{"validJustfileParams", []byte("build target=\"linux\":\n    GOOS={{target}} go build\n"), true, JustfileValidator{}},
 	{"invalidJustfileUnterminatedString", []byte("name := \"hello\n"), false, JustfileValidator{}},
+	{"validCue", []byte("a: 1\nb: \"hello\""), true, CueValidator{}},
+	{"invalidCue", []byte("a: 1 b:"), false, CueValidator{}},
 	{"validSarif210", validSarif210Bytes, true, SarifValidator{}},
 	{"validSarif22", validSarif22Bytes, true, SarifValidator{}},
 	{"invalidSarif", []byte(`{"not": "sarif"}`), false, SarifValidator{}},