make updates

internal/config/config.go

@@ -0,0 +1,73 @@
+package config
+
+import (
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"strings"
+
+	"github.com/mholt/caddy"
+)
+
+// Config is a configuration for browsing in a particualr path.
+type Config struct {
+	PathScope   string
+	Root        http.FileSystem
+	BaseURL     string
+	StyleSheet  string // Costum stylesheet
+	HugoEnabled bool   // This must be only used by Hugo plugin
+}
+
+// Parse parses the configuration set by the user so it can
+// be used by the middleware
+func Parse(c *caddy.Controller) ([]Config, error) {
+	var configs []Config
+
+	appendConfig := func(cfg Config) error {
+		for _, c := range configs {
+			if c.PathScope == cfg.PathScope {
+				return fmt.Errorf("duplicate file managing config for %s", c.PathScope)
+			}
+		}
+		configs = append(configs, cfg)
+		return nil
+	}
+
+	for c.Next() {
+		var cfg = Config{PathScope: ".", BaseURL: "", HugoEnabled: false}
+		for c.NextBlock() {
+			switch c.Val() {
+			case "show":
+				if !c.NextArg() {
+					return configs, c.ArgErr()
+				}
+				cfg.PathScope = c.Val()
+				cfg.PathScope = strings.TrimSuffix(cfg.PathScope, "/")
+			case "on":
+				if !c.NextArg() {
+					return configs, c.ArgErr()
+				}
+				cfg.BaseURL = c.Val()
+				cfg.BaseURL = strings.TrimPrefix(cfg.BaseURL, "/")
+				cfg.BaseURL = strings.TrimSuffix(cfg.BaseURL, "/")
+				cfg.BaseURL = "/" + cfg.BaseURL
+			case "styles":
+				if !c.NextArg() {
+					return configs, c.ArgErr()
+				}
+				tplBytes, err := ioutil.ReadFile(c.Val())
+				if err != nil {
+					return configs, err
+				}
+				cfg.StyleSheet = string(tplBytes)
+			}
+		}
+
+		cfg.Root = http.Dir(cfg.PathScope)
+		if err := appendConfig(cfg); err != nil {
+			return configs, err
+		}
+	}
+
+	return configs, nil
+}