flags provenance block in index and slices

internal/renderer/flags.go

@@ -0,0 +1,75 @@
+package renderer
+
+import (
+	"fmt"
+	"slices"
+	"strings"
+
+	"git.flo.fo/FLO/dirmd/internal/config"
+)
+
+func FormatFlags(cfg *config.Config) string {
+	if cfg == nil {
+		return ""
+	}
+
+	var flags []string
+	if cfg.OmitTest {
+		flags = append(flags, "--omit-test")
+	}
+	if cfg.OmitMd {
+		flags = append(flags, "--omit-md")
+	}
+	if cfg.SkipFrontend {
+		flags = append(flags, "--skip-frontend")
+	}
+	if cfg.FrontendOnly {
+		flags = append(flags, "--frontend-only")
+	}
+	if cfg.MaxDepth != config.DefaultMaxDepth {
+		flags = append(flags, fmt.Sprintf("--max-depth %d", cfg.MaxDepth))
+	}
+	if cfg.MaxSize != config.DefaultMaxSize {
+		flags = append(flags, fmt.Sprintf("--max-size %d", cfg.MaxSize))
+	}
+
+	var sb strings.Builder
+
+	if len(flags) > 0 {
+		fmt.Fprintf(&sb, "> Flags: %s\n", strings.Join(flags, " "))
+	}
+
+	extraIgnores := setMinus(cfg.Ignores, config.DefaultIgnores)
+	if len(extraIgnores) > 0 {
+		fmt.Fprintf(&sb, "> Ignored: %s\n", strings.Join(extraIgnores, ", "))
+	}
+
+	var extraExts []string
+	for _, e := range cfg.Extensions {
+		if slices.Contains(config.DefaultExts, e) || slices.Contains(config.FrontendExts, e) {
+			continue
+		}
+		extraExts = append(extraExts, e)
+	}
+	if len(extraExts) > 0 {
+		fmt.Fprintf(&sb, "> Skipped extensions: %s\n", strings.Join(extraExts, ", "))
+	}
+
+	if sb.Len() > 0 {
+		sb.WriteString("\n")
+	}
+	return sb.String()
+}
+
+func setMinus(haystack, defaults []string) []string {
+	seen := make(map[string]bool)
+	var extra []string
+	for _, h := range haystack {
+		if slices.Contains(defaults, h) || seen[h] {
+			continue
+		}
+		seen[h] = true
+		extra = append(extra, h)
+	}
+	return extra
+}