Implement doublestar wildcards

instruction.go

@@ -6,6 +6,7 @@ import (
 	"path/filepath"
 	"strings"
 
+	"github.com/bmatcuk/doublestar/v4"
 	"gopkg.in/yaml.v3"
 )
 
@@ -285,7 +286,7 @@ func ParseYAMLFile(filename, workdir string) ([]LinkInstruction, error) {
 	for _, link := range config.Links {
 		if strings.Contains(link.Source, "*") {
 			LogSource("Expanding wildcard source %s in YAML file %s", link.Source, filename)
-			newlinks, err := ExpandWildcard(link.Source, workdir, link.Target)
+			newlinks, err := ExpandPattern(link.Source, workdir, link.Target)
 			if err != nil {
 				return nil, fmt.Errorf("error expanding wildcard: %w", err)
 			}
@@ -321,19 +322,32 @@ func ParseYAMLFile(filename, workdir string) ([]LinkInstruction, error) {
 	return expanded, nil
 }
 
-func ExpandWildcard(source, workdir, target string) (links []LinkInstruction, err error) {
-	dir := filepath.Dir(source)
-	pattern := filepath.Base(source)
+func ExpandPattern(source, workdir, target string) (links []LinkInstruction, err error) {
+	static, pattern := doublestar.SplitPattern(source)
+	if static == "" {
+		cwd, err := os.Getwd()
+		if err != nil {
+			return nil, fmt.Errorf("error getting current working directory: %w", err)
+		}
+		static = cwd
+	}
+	LogInfo("Static part: %s", static)
+	LogInfo("Pattern part: %s", pattern)
 
-	files, err := filepath.Glob(filepath.Join(workdir, dir, pattern))
+	files, err := doublestar.Glob(os.DirFS(static), pattern)
 	if err != nil {
 		return nil, fmt.Errorf("error expanding wildcard: %w", err)
 	}
 
 	for _, file := range files {
+		ext := filepath.Ext(file)
+		if ext == "" {
+			LogInfo("Skipping file %s because it has no extension (Directory?)", file)
+			continue
+		}
 		link := LinkInstruction{
 			Source: file,
-			Target: filepath.Join(target, filepath.Base(file)),
+			Target: filepath.Join(target, file),
 		}
 		links = append(links, link)
 	}