feat: support wildcard matching on ignore

See decentral1se/distribusi-go#3.

distribusi.go

@@ -104,6 +104,8 @@ with relevant html classes and tags for easy styling.
 Example:
 
     distribusi -p <path> -s
+
+See https://pkg.go.dev/path/filepath#Match for supported patterns for "-i/--ignore".
 `,
 		Flags: []cli.Flag{
 			&cli.StringFlag{
@@ -127,7 +129,7 @@ Example:
 			&cli.StringFlag{
 				Name:    "ignore",
 				Aliases: []string{"i"},
-				Usage:   "ignore specific paths (e.g. \"mydir, myfile.txt\" )",
+				Usage:   "ignore specific paths, (e.g. \"*.gif, *.txt, mydir\" )",
 				Value:   "",
 			},
 			&cli.StringFlag{
@@ -228,7 +230,11 @@ func distribusify(c *cli.Context, root string, ignore []string) error {
 
 	if err := filepath.Walk(root, func(fpath string, finfo os.FileInfo, err error) error {
 
-		if skip := shouldSkip(c, fpath, ignore); skip {
+		skip, err := shouldSkip(c, fpath, ignore)
+		if err != nil {
+			return err
+		}
+		if skip {
 			return nil
 		}
 
@@ -283,7 +289,11 @@ func distribusify(c *cli.Context, root string, ignore []string) error {
 			for _, dir := range dirs {
 				fname := filepath.Base(dir)
 
-				if skip := shouldSkip(c, dir, ignore); skip {
+				skip, err := shouldSkip(c, fname, ignore)
+				if err != nil {
+					return err
+				}
+				if skip {
 					continue
 				}
 
@@ -301,7 +311,11 @@ func distribusify(c *cli.Context, root string, ignore []string) error {
 			for _, file := range files {
 				fname := filepath.Base(file)
 
-				if skip := shouldSkip(c, file, ignore); skip {
+				skip, err := shouldSkip(c, fname, ignore)
+				if err != nil {
+					return err
+				}
+				if skip {
 					continue
 				}
 
@@ -629,19 +643,27 @@ func wipeGeneratedFiles(dir string) error {
 }
 
 // shouldSkip checks if paths should be skipped over.
-func shouldSkip(c *cli.Context, fpath string, ignore []string) bool {
+func shouldSkip(c *cli.Context, fpath string, ignore []string) (bool, error) {
-	if sliceContains(ignore, filepath.Base(fpath)) {
+	for _, pattern := range ignore {
-		return true
+		match, err := filepath.Match(pattern, filepath.Base(fpath))
+		if err != nil {
+			return false, err
+		}
+		if match {
+			logrus.Debugf("skipping %s, matched %s", filepath.Base(fpath), pattern)
+			return true, nil
+		}
 	}
 
 	fpaths := strings.Split(fpath, "/")
 	for _, part := range fpaths {
 		if strings.HasPrefix(part, ".") {
 			if !c.Bool("hidden") {
-				return true
+				logrus.Debugf("skipping %s, hidden directory", fpath)
+				return true, nil
 			}
 		}
 	}
 
-	return false
+	return false, nil
 }