Adding upstream version 2.6.3.

Signed-off-by: Daniel Baumann <daniel@debian.org>

simple_parser.go

@@ -0,0 +1,43 @@
+package editorconfig
+
+import (
+	"fmt"
+	"os"
+
+	"gopkg.in/ini.v1"
+)
+
+// SimpleParser implements the Parser interface but without doing any caching.
+type SimpleParser struct{}
+
+// ParseInit calls go-ini's Load on the file.
+func (parser *SimpleParser) ParseIni(filename string) (*Editorconfig, error) {
+	ec, warning, err := parser.ParseIniGraceful(filename)
+	if err != nil {
+		return nil, err
+	}
+
+	return ec, warning
+}
+
+// ParseIni calls go-ini's Load on the file and keep warnings in a separate error.
+func (parser *SimpleParser) ParseIniGraceful(filename string) (*Editorconfig, error, error) {
+	fp, err := os.Open(filename)
+	if err != nil {
+		return nil, nil, err //nolint:wrapcheck
+	}
+
+	defer fp.Close()
+
+	iniFile, err := ini.Load(fp)
+	if err != nil {
+		return nil, nil, fmt.Errorf("cannot load %q: %w", filename, err)
+	}
+
+	return newEditorconfig(iniFile)
+}
+
+// FnmatchCase calls the module's FnmatchCase.
+func (parser *SimpleParser) FnmatchCase(selector string, filename string) (bool, error) {
+	return FnmatchCase(selector, filename)
+}