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