1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
package utils
import (
"bytes"
"html/template"
"net/http"
"reflect"
l4g "github.com/alecthomas/log4go"
"github.com/fsnotify/fsnotify"
"github.com/nicksnyder/go-i18n/i18n"
)
// Global storage for templates
var htmlTemplates *template.Template
type HTMLTemplate struct {
TemplateName string
Props map[string]interface{}
Html map[string]template.HTML
Locale string
}
func InitHTML() {
InitHTMLWithDir("templates")
}
func InitHTMLWithDir(dir string) {
if htmlTemplates != nil {
return
}
templatesDir, _ := FindDir(dir)
l4g.Debug(T("api.api.init.parsing_templates.debug"), templatesDir)
var err error
if htmlTemplates, err = template.ParseGlob(templatesDir + "*.html"); err != nil {
l4g.Error(T("api.api.init.parsing_templates.error"), err)
}
// Watch the templates folder for changes.
watcher, err := fsnotify.NewWatcher()
if err != nil {
l4g.Error(T("web.create_dir.error"), err)
}
go func() {
for {
select {
case event := <-watcher.Events:
if event.Op&fsnotify.Write == fsnotify.Write {
l4g.Info(T("web.reparse_templates.info"), event.Name)
if htmlTemplates, err = template.ParseGlob(templatesDir + "*.html"); err != nil {
l4g.Error(T("web.parsing_templates.error"), err)
}
}
case err := <-watcher.Errors:
l4g.Error(T("web.dir_fail.error"), err)
}
}
}()
err = watcher.Add(templatesDir)
if err != nil {
l4g.Error(T("web.watcher_fail.error"), err)
}
}
func NewHTMLTemplate(templateName string, locale string) *HTMLTemplate {
return &HTMLTemplate{
TemplateName: templateName,
Props: make(map[string]interface{}),
Html: make(map[string]template.HTML),
Locale: locale,
}
}
func (t *HTMLTemplate) addDefaultProps() {
var localT i18n.TranslateFunc
if len(t.Locale) > 0 {
localT = GetUserTranslations(t.Locale)
} else {
localT = T
}
t.Props["Footer"] = localT("api.templates.email_footer")
if *Cfg.EmailSettings.FeedbackOrganization != "" {
t.Props["Organization"] = localT("api.templates.email_organization") + *Cfg.EmailSettings.FeedbackOrganization
} else {
t.Props["Organization"] = ""
}
t.Html["EmailInfo"] = TranslateAsHtml(localT, "api.templates.email_info",
map[string]interface{}{"SupportEmail": *Cfg.SupportSettings.SupportEmail, "SiteName": Cfg.TeamSettings.SiteName})
}
func (t *HTMLTemplate) Render() string {
t.addDefaultProps()
var text bytes.Buffer
if err := htmlTemplates.ExecuteTemplate(&text, t.TemplateName, t); err != nil {
l4g.Error(T("api.api.render.error"), t.TemplateName, err)
}
return text.String()
}
func (t *HTMLTemplate) RenderToWriter(w http.ResponseWriter) error {
t.addDefaultProps()
if err := htmlTemplates.ExecuteTemplate(w, t.TemplateName, t); err != nil {
l4g.Error(T("api.api.render.error"), t.TemplateName, err)
return err
}
return nil
}
func TranslateAsHtml(t i18n.TranslateFunc, translationID string, args map[string]interface{}) template.HTML {
return template.HTML(t(translationID, escapeForHtml(args)))
}
func escapeForHtml(arg interface{}) interface{} {
switch typedArg := arg.(type) {
case string:
return template.HTMLEscapeString(typedArg)
case *string:
return template.HTMLEscapeString(*typedArg)
case map[string]interface{}:
safeArg := make(map[string]interface{}, len(typedArg))
for key, value := range typedArg {
safeArg[key] = escapeForHtml(value)
}
return safeArg
default:
l4g.Warn("Unable to escape value for HTML template %v of type %v", arg, reflect.ValueOf(arg).Type())
return ""
}
}
|
