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// Copyright © 2013-14 Steve Francia <spf@spf13.com>.
//
// Licensed under the Simple Public 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://opensource.org/licenses/Simple-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 hugolib
import (
"fmt"
"html/template"
"reflect"
"regexp"
"sort"
"strings"
"sync"
bp "github.com/spf13/hugo/bufferpool"
"github.com/spf13/hugo/helpers"
"github.com/spf13/hugo/tpl"
jww "github.com/spf13/jwalterweatherman"
)
type ShortcodeFunc func([]string) string
type Shortcode struct {
Name string
Func ShortcodeFunc
}
type ShortcodeWithPage struct {
Params interface{}
Inner template.HTML
Page *Page
}
func (scp *ShortcodeWithPage) Ref(ref string) (string, error) {
return scp.Page.Ref(ref)
}
func (scp *ShortcodeWithPage) RelRef(ref string) (string, error) {
return scp.Page.RelRef(ref)
}
func (scp *ShortcodeWithPage) Get(key interface{}) interface{} {
if reflect.ValueOf(scp.Params).Len() == 0 {
return nil
}
var x reflect.Value
switch key.(type) {
case int64, int32, int16, int8, int:
if reflect.TypeOf(scp.Params).Kind() == reflect.Map {
return "error: cannot access named params by position"
} else if reflect.TypeOf(scp.Params).Kind() == reflect.Slice {
x = reflect.ValueOf(scp.Params).Index(int(reflect.ValueOf(key).Int()))
}
case string:
if reflect.TypeOf(scp.Params).Kind() == reflect.Map {
x = reflect.ValueOf(scp.Params).MapIndex(reflect.ValueOf(key))
if !x.IsValid() {
return ""
}
} else if reflect.TypeOf(scp.Params).Kind() == reflect.Slice {
if reflect.ValueOf(scp.Params).Len() == 1 && reflect.ValueOf(scp.Params).Index(0).String() == "" {
return nil
}
return "error: cannot access positional params by string name"
}
}
switch x.Kind() {
case reflect.String:
return x.String()
case reflect.Int64, reflect.Int32, reflect.Int16, reflect.Int8, reflect.Int:
return x.Int()
default:
return x
}
}
// Note - this value must not contain any markup syntax
const shortcodePlaceholderPrefix = "HUGOSHORTCODE"
type shortcode struct {
name string
inner []interface{} // string or nested shortcode
params interface{} // map or array
err error
doMarkup bool
}
func (sc shortcode) String() string {
// for testing (mostly), so any change here will break tests!
var params interface{}
switch v := sc.params.(type) {
case map[string]string:
// sort the keys so test assertions won't fail
var keys []string
for k := range v {
keys = append(keys, k)
}
sort.Strings(keys)
var tmp = make([]string, len(keys))
for i, k := range keys {
tmp[i] = k + ":" + v[k]
}
params = tmp
default:
// use it as is
params = sc.params
}
return fmt.Sprintf("%s(%q, %t){%s}", sc.name, params, sc.doMarkup, sc.inner)
}
// all in one go: extract, render and replace
// only used for testing
func ShortcodesHandle(stringToParse string, page *Page, t tpl.Template) string {
tmpContent, tmpShortcodes := extractAndRenderShortcodes(stringToParse, page, t)
if len(tmpShortcodes) > 0 {
tmpContentWithTokensReplaced, err := replaceShortcodeTokens([]byte(tmpContent), shortcodePlaceholderPrefix, true, tmpShortcodes)
if err != nil {
jww.ERROR.Printf("Fail to replace short code tokens in %s:\n%s", page.BaseFileName(), err.Error())
} else {
return string(tmpContentWithTokensReplaced)
}
}
return string(tmpContent)
}
var isInnerShortcodeCache = struct {
sync.RWMutex
m map[string]bool
}{m: make(map[string]bool)}
// to avoid potential costly look-aheads for closing tags we look inside the template itself
// we could change the syntax to self-closing tags, but that would make users cry
// the value found is cached
func isInnerShortcode(t *template.Template) bool {
isInnerShortcodeCache.RLock()
m, ok := isInnerShortcodeCache.m[t.Name()]
isInnerShortcodeCache.RUnlock()
if ok {
return m
}
isInnerShortcodeCache.Lock()
defer isInnerShortcodeCache.Unlock()
match, _ := regexp.MatchString("{{.*?\\.Inner.*?}}", t.Tree.Root.String())
isInnerShortcodeCache.m[t.Name()] = match
return match
}
func createShortcodePlaceholder(id int) string {
return fmt.Sprintf("{@{@%s-%d@}@}", shortcodePlaceholderPrefix, id)
}
const innerNewlineRegexp = "\n"
const innerCleanupRegexp
|