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Protect the innerShortCodeCache by a RW lock

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This commit is contained in:
bep 2015-01-21 19:13:11 +01:00
parent c8f8f48e96
commit 878754c21f
1 changed files with 14 additions and 3 deletions
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17
hugolib/shortcode.go
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@ -22,6 +22,7 @@ import (
"sort"
"strconv"
"strings"
"sync"
"github.com/spf13/hugo/helpers"
"github.com/spf13/hugo/tpl"
@ -143,18 +144,28 @@ func ShortcodesHandle(stringToParse string, page *Page, t tpl.Template) string {
return string(tmpContent)
}
var isInnerShortcodeCache = make(map[string]bool)
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 {
if m, ok := isInnerShortcodeCache[t.Name()]; ok {
isInnerShortcodeCache.RLock()
m, ok := isInnerShortcodeCache.m[t.Name()]
isInnerShortcodeCache.RUnlock()
if ok {
return m
}
match, _ := regexp.MatchString("{{.*?\\.Inner.*?}}", t.Tree.Root.String())
isInnerShortcodeCache[t.Name()] = match
isInnerShortcodeCache.Lock()
isInnerShortcodeCache.m[t.Name()] = match
isInnerShortcodeCache.Unlock()
return match
}