feat: implement std.equalsIgnoreCase (#692)

builtins.go

@@ -1289,6 +1289,18 @@ func builtinIsEmpty(i *interpreter, strv value) (value, error) {
 	return makeValueBoolean(len(sStr) == 0), nil
 }
 
+func builtinEqualsIgnoreCase(i *interpreter, sv1, sv2 value) (value, error) {
+	s1, err := i.getString(sv1)
+	if err != nil {
+		return nil, err
+	}
+	s2, err := i.getString(sv2)
+	if err != nil {
+		return nil, err
+	}
+	return makeValueBoolean(strings.EqualFold(s1.getGoString(), s2.getGoString())), nil
+}
+
 func base64DecodeGoBytes(i *interpreter, str string) ([]byte, error) {
 	strLen := len(str)
 	if strLen%4 != 0 {
@@ -2358,6 +2370,7 @@ var funcBuiltins = buildBuiltinMap([]builtin{
 	&ternaryBuiltin{name: "splitLimit", function: builtinSplitLimit, params: ast.Identifiers{"str", "c", "maxsplits"}},
 	&ternaryBuiltin{name: "strReplace", function: builtinStrReplace, params: ast.Identifiers{"str", "from", "to"}},
 	&unaryBuiltin{name: "isEmpty", function: builtinIsEmpty, params: ast.Identifiers{"str"}},
+	&binaryBuiltin{name: "equalsIgnoreCase", function: builtinEqualsIgnoreCase, params: ast.Identifiers{"str1", "str2"}},
 	&unaryBuiltin{name: "base64Decode", function: builtinBase64Decode, params: ast.Identifiers{"str"}},
 	&unaryBuiltin{name: "base64DecodeBytes", function: builtinBase64DecodeBytes, params: ast.Identifiers{"str"}},
 	&unaryBuiltin{name: "parseInt", function: builtinParseInt, params: ast.Identifiers{"str"}},

linter/internal/types/stdlib.go

@@ -90,6 +90,7 @@ func prepareStdlib(g *typeGraph) {
 		"stringChars":      g.newSimpleFuncType(stringType, "str"),
 		"format":           g.newSimpleFuncType(stringType, "str", "vals"),
 		"isEmpty":          g.newSimpleFuncType(boolType, "str"),
+		"equalsIgnoreCase": g.newSimpleFuncType(boolType, "str1", "str2"),
 		// TODO(sbarzowski) Fix when they match the documentation
 		"escapeStringBash":    g.newSimpleFuncType(stringType, "str_"),
 		"escapeStringDollars": g.newSimpleFuncType(stringType, "str_"),

testdata/builtinEqualsIgnoreCase.golden

@@ -0,0 +1 @@
+true

testdata/builtinEqualsIgnoreCase.jsonnet

@@ -0,0 +1 @@
+std.equalsIgnoreCase("foo", "FOO")

testdata/builtinEqualsIgnoreCase2.golden

@@ -0,0 +1 @@
+false

testdata/builtinEqualsIgnoreCase2.jsonnet

@@ -0,0 +1 @@
+std.equalsIgnoreCase("foo", "bar")