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path: root/vendor/golang.org/x/text/message/catalog/dict.go
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-rw-r--r--vendor/golang.org/x/text/message/catalog/dict.go129
1 files changed, 129 insertions, 0 deletions
diff --git a/vendor/golang.org/x/text/message/catalog/dict.go b/vendor/golang.org/x/text/message/catalog/dict.go
new file mode 100644
index 0000000..a0eb818
--- /dev/null
+++ b/vendor/golang.org/x/text/message/catalog/dict.go
@@ -0,0 +1,129 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package catalog
+
+import (
+ "sync"
+
+ "golang.org/x/text/internal"
+ "golang.org/x/text/internal/catmsg"
+ "golang.org/x/text/language"
+)
+
+// TODO:
+// Dictionary returns a Dictionary that returns the first Message, using the
+// given language tag, that matches:
+// 1. the last one registered by one of the Set methods
+// 2. returned by one of the Loaders
+// 3. repeat from 1. using the parent language
+// This approach allows messages to be underspecified.
+// func (c *Catalog) Dictionary(tag language.Tag) (Dictionary, error) {
+// // TODO: verify dictionary exists.
+// return &dict{&c.index, tag}, nil
+// }
+
+type dict struct {
+ s *store
+ tag language.Tag // TODO: make compact tag.
+}
+
+func (d *dict) Lookup(key string) (data string, ok bool) {
+ return d.s.lookup(d.tag, key)
+}
+
+func (b *Builder) lookup(tag language.Tag, key string) (data string, ok bool) {
+ return b.index.lookup(tag, key)
+}
+
+func (c *Builder) set(tag language.Tag, key string, s *store, msg ...Message) error {
+ data, err := catmsg.Compile(tag, &dict{&c.macros, tag}, firstInSequence(msg))
+
+ s.mutex.Lock()
+ defer s.mutex.Unlock()
+
+ m := s.index[tag]
+ if m == nil {
+ m = msgMap{}
+ if s.index == nil {
+ s.index = map[language.Tag]msgMap{}
+ }
+ c.matcher = nil
+ s.index[tag] = m
+ }
+
+ m[key] = data
+ return err
+}
+
+func (c *Builder) Matcher() language.Matcher {
+ c.index.mutex.RLock()
+ m := c.matcher
+ c.index.mutex.RUnlock()
+ if m != nil {
+ return m
+ }
+
+ c.index.mutex.Lock()
+ if c.matcher == nil {
+ c.matcher = language.NewMatcher(c.unlockedLanguages())
+ }
+ m = c.matcher
+ c.index.mutex.Unlock()
+ return m
+}
+
+type store struct {
+ mutex sync.RWMutex
+ index map[language.Tag]msgMap
+}
+
+type msgMap map[string]string
+
+func (s *store) lookup(tag language.Tag, key string) (data string, ok bool) {
+ s.mutex.RLock()
+ defer s.mutex.RUnlock()
+
+ for ; ; tag = tag.Parent() {
+ if msgs, ok := s.index[tag]; ok {
+ if msg, ok := msgs[key]; ok {
+ return msg, true
+ }
+ }
+ if tag == language.Und {
+ break
+ }
+ }
+ return "", false
+}
+
+// Languages returns all languages for which the Catalog contains variants.
+func (b *Builder) Languages() []language.Tag {
+ s := &b.index
+ s.mutex.RLock()
+ defer s.mutex.RUnlock()
+
+ return b.unlockedLanguages()
+}
+
+func (b *Builder) unlockedLanguages() []language.Tag {
+ s := &b.index
+ if len(s.index) == 0 {
+ return nil
+ }
+ tags := make([]language.Tag, 0, len(s.index))
+ _, hasFallback := s.index[b.options.fallback]
+ offset := 0
+ if hasFallback {
+ tags = append(tags, b.options.fallback)
+ offset = 1
+ }
+ for t := range s.index {
+ if t != b.options.fallback {
+ tags = append(tags, t)
+ }
+ }
+ internal.SortTags(tags[offset:])
+ return tags
+}