feat: add separate custom file complete function

complete.go

@@ -0,0 +1,55 @@
+package main
+
+import (
+	"path/filepath"
+	"strings"
+	"os"
+)
+
+func fileComplete(query, ctx string, fields []string) []string {
+	var completions []string
+
+	prefixes := []string{"./", "../", "/", "~/"}
+	for _, prefix := range prefixes {
+		if strings.HasPrefix(query, prefix) {
+			completions, _ = matchPath(strings.Replace(query, "~", curuser.HomeDir, 1), query)
+		}
+	}
+	
+	if len(completions) == 0 && len(fields) > 1 {
+		completions, _ = matchPath("./" + query, query)
+	}
+
+	return completions
+}
+
+func matchPath(path, pref string) ([]string, error) {
+	var entries []string
+	matches, err := filepath.Glob(path + "*")
+	if err == nil {
+		args := []string{
+			"\"", "\\\"",
+			"'", "\\'",
+			"`", "\\`",
+			" ", "\\ ",
+		}
+
+		r := strings.NewReplacer(args...)
+		for _, match := range matches {
+			name := filepath.Base(match)
+			p := filepath.Base(pref)
+			if pref == "" {
+				p = ""
+			}
+			name = strings.TrimPrefix(name, p)
+			matchFull, _ := filepath.Abs(match)
+			if info, err := os.Stat(matchFull); err == nil && info.IsDir() {
+				name = name + string(os.PathSeparator)
+			}
+			name = r.Replace(name)
+			entries = append(entries, name)
+		}
+	}
+	
+	return entries, err
+}