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			123 lines
		
	
	
		
			2.6 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			123 lines
		
	
	
		
			2.6 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
// Copyright 2015 Light Code Labs, LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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//     http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package templates
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import (
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	"bytes"
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	"net/http"
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	"sync"
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	"github.com/mholt/caddy"
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	"github.com/mholt/caddy/caddyhttp/httpserver"
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)
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func init() {
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	caddy.RegisterPlugin("templates", caddy.Plugin{
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		ServerType: "http",
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		Action:     setup,
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	})
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}
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// setup configures a new Templates middleware instance.
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func setup(c *caddy.Controller) error {
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	rules, err := templatesParse(c)
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	if err != nil {
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		return err
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	}
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	cfg := httpserver.GetConfig(c)
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	tmpls := Templates{
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		Rules:   rules,
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		Root:    cfg.Root,
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		FileSys: http.Dir(cfg.Root),
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		BufPool: &sync.Pool{
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			New: func() interface{} {
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				return new(bytes.Buffer)
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			},
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		},
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	}
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	cfg.AddMiddleware(func(next httpserver.Handler) httpserver.Handler {
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		tmpls.Next = next
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		return tmpls
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	})
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	return nil
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}
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func templatesParse(c *caddy.Controller) ([]Rule, error) {
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	var rules []Rule
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	for c.Next() {
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		var rule Rule
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		rule.Path = defaultTemplatePath
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		rule.Extensions = defaultTemplateExtensions
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		args := c.RemainingArgs()
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		switch len(args) {
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		case 0:
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			// Optional block
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			for c.NextBlock() {
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				switch c.Val() {
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				case "path":
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					args := c.RemainingArgs()
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					if len(args) != 1 {
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						return nil, c.ArgErr()
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					}
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					rule.Path = args[0]
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				case "ext":
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					args := c.RemainingArgs()
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					if len(args) == 0 {
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						return nil, c.ArgErr()
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					}
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					rule.Extensions = args
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				case "between":
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					args := c.RemainingArgs()
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					if len(args) != 2 {
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						return nil, c.ArgErr()
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					}
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					rule.Delims[0] = args[0]
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					rule.Delims[1] = args[1]
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				}
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			}
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		default:
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			// First argument would be the path
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			rule.Path = args[0]
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			// Any remaining arguments are extensions
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			rule.Extensions = args[1:]
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			if len(rule.Extensions) == 0 {
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				rule.Extensions = defaultTemplateExtensions
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			}
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		}
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		for _, ext := range rule.Extensions {
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			rule.IndexFiles = append(rule.IndexFiles, "index"+ext)
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		}
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		rules = append(rules, rule)
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	}
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	return rules, nil
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}
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const defaultTemplatePath = "/"
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var defaultTemplateExtensions = []string{".html", ".htm", ".tmpl", ".tpl", ".txt"}
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