githaven/modules/templates/helper.go
wxiaoguang 43c7a2e7b1
Refactor names (#31405)
This PR only does "renaming":

* `Route` should be `Router` (and chi router is also called "router")
* `Params` should be `PathParam` (to distingush it from URL query param, and to match `FormString`)
* Use lower case for private functions to avoid exposing or abusing
2024-06-19 06:32:45 +08:00

297 lines
8.9 KiB
Go

// Copyright 2018 The Gitea Authors. All rights reserved.
// Copyright 2014 The Gogs Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package templates
import (
"fmt"
"html"
"html/template"
"net/url"
"reflect"
"slices"
"strings"
"time"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/base"
"code.gitea.io/gitea/modules/markup"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/svg"
"code.gitea.io/gitea/modules/templates/eval"
"code.gitea.io/gitea/modules/timeutil"
"code.gitea.io/gitea/modules/util"
"code.gitea.io/gitea/services/gitdiff"
"code.gitea.io/gitea/services/webtheme"
)
// NewFuncMap returns functions for injecting to templates
func NewFuncMap() template.FuncMap {
return map[string]any{
"ctx": func() any { return nil }, // template context function
"DumpVar": dumpVar,
// -----------------------------------------------------------------
// html/template related functions
"dict": dict, // it's lowercase because this name has been widely used. Our other functions should have uppercase names.
"Iif": iif,
"Eval": evalTokens,
"SafeHTML": safeHTML,
"HTMLFormat": HTMLFormat,
"HTMLEscape": htmlEscape,
"QueryEscape": queryEscape,
"JSEscape": jsEscapeSafe,
"SanitizeHTML": SanitizeHTML,
"URLJoin": util.URLJoin,
"DotEscape": dotEscape,
"PathEscape": url.PathEscape,
"PathEscapeSegments": util.PathEscapeSegments,
// utils
"StringUtils": NewStringUtils,
"SliceUtils": NewSliceUtils,
"JsonUtils": NewJsonUtils,
// -----------------------------------------------------------------
// svg / avatar / icon / color
"svg": svg.RenderHTML,
"EntryIcon": base.EntryIcon,
"MigrationIcon": migrationIcon,
"ActionIcon": actionIcon,
"SortArrow": sortArrow,
"ContrastColor": util.ContrastColor,
// -----------------------------------------------------------------
// time / number / format
"FileSize": base.FileSize,
"CountFmt": base.FormatNumberSI,
"TimeSince": timeutil.TimeSince,
"TimeSinceUnix": timeutil.TimeSinceUnix,
"DateTime": timeutil.DateTime,
"Sec2Time": util.SecToTime,
"LoadTimes": func(startTime time.Time) string {
return fmt.Sprint(time.Since(startTime).Nanoseconds()/1e6) + "ms"
},
// -----------------------------------------------------------------
// setting
"AppName": func() string {
return setting.AppName
},
"AppSubUrl": func() string {
return setting.AppSubURL
},
"AssetUrlPrefix": func() string {
return setting.StaticURLPrefix + "/assets"
},
"AppUrl": func() string {
// The usage of AppUrl should be avoided as much as possible,
// because the AppURL(ROOT_URL) may not match user's visiting site and the ROOT_URL in app.ini may be incorrect.
// And it's difficult for Gitea to guess absolute URL correctly with zero configuration,
// because Gitea doesn't know whether the scheme is HTTP or HTTPS unless the reverse proxy could tell Gitea.
return setting.AppURL
},
"AppVer": func() string {
return setting.AppVer
},
"AppDomain": func() string { // documented in mail-templates.md
return setting.Domain
},
"AssetVersion": func() string {
return setting.AssetVersion
},
"DefaultShowFullName": func() bool {
return setting.UI.DefaultShowFullName
},
"ShowFooterTemplateLoadTime": func() bool {
return setting.Other.ShowFooterTemplateLoadTime
},
"ShowFooterPoweredBy": func() bool {
return setting.Other.ShowFooterPoweredBy
},
"AllowedReactions": func() []string {
return setting.UI.Reactions
},
"CustomEmojis": func() map[string]string {
return setting.UI.CustomEmojisMap
},
"MetaAuthor": func() string {
return setting.UI.Meta.Author
},
"MetaDescription": func() string {
return setting.UI.Meta.Description
},
"MetaKeywords": func() string {
return setting.UI.Meta.Keywords
},
"EnableTimetracking": func() bool {
return setting.Service.EnableTimetracking
},
"DisableGitHooks": func() bool {
return setting.DisableGitHooks
},
"DisableWebhooks": func() bool {
return setting.DisableWebhooks
},
"DisableImportLocal": func() bool {
return !setting.ImportLocalPaths
},
"UserThemeName": userThemeName,
"NotificationSettings": func() map[string]any {
return map[string]any{
"MinTimeout": int(setting.UI.Notification.MinTimeout / time.Millisecond),
"TimeoutStep": int(setting.UI.Notification.TimeoutStep / time.Millisecond),
"MaxTimeout": int(setting.UI.Notification.MaxTimeout / time.Millisecond),
"EventSourceUpdateTime": int(setting.UI.Notification.EventSourceUpdateTime / time.Millisecond),
}
},
"MermaidMaxSourceCharacters": func() int {
return setting.MermaidMaxSourceCharacters
},
// -----------------------------------------------------------------
// render
"RenderCommitMessage": RenderCommitMessage,
"RenderCommitMessageLinkSubject": renderCommitMessageLinkSubject,
"RenderCommitBody": renderCommitBody,
"RenderCodeBlock": renderCodeBlock,
"RenderIssueTitle": renderIssueTitle,
"RenderEmoji": renderEmoji,
"ReactionToEmoji": reactionToEmoji,
"RenderMarkdownToHtml": RenderMarkdownToHtml,
"RenderLabel": renderLabel,
"RenderLabels": RenderLabels,
// -----------------------------------------------------------------
// misc
"ShortSha": base.ShortSha,
"ActionContent2Commits": ActionContent2Commits,
"IsMultilineCommitMessage": isMultilineCommitMessage,
"CommentMustAsDiff": gitdiff.CommentMustAsDiff,
"MirrorRemoteAddress": mirrorRemoteAddress,
"FilenameIsImage": filenameIsImage,
"TabSizeClass": tabSizeClass,
}
}
func HTMLFormat(s string, rawArgs ...any) template.HTML {
args := slices.Clone(rawArgs)
for i, v := range args {
switch v := v.(type) {
case nil, bool, int, int8, int16, int32, int64, uint, uint8, uint16, uint32, uint64, float32, float64, template.HTML:
// for most basic types (including template.HTML which is safe), just do nothing and use it
case string:
args[i] = template.HTMLEscapeString(v)
case fmt.Stringer:
args[i] = template.HTMLEscapeString(v.String())
default:
args[i] = template.HTMLEscapeString(fmt.Sprint(v))
}
}
return template.HTML(fmt.Sprintf(s, args...))
}
// safeHTML render raw as HTML
func safeHTML(s any) template.HTML {
switch v := s.(type) {
case string:
return template.HTML(v)
case template.HTML:
return v
}
panic(fmt.Sprintf("unexpected type %T", s))
}
// SanitizeHTML sanitizes the input by pre-defined markdown rules
func SanitizeHTML(s string) template.HTML {
return template.HTML(markup.Sanitize(s))
}
func htmlEscape(s any) template.HTML {
switch v := s.(type) {
case string:
return template.HTML(html.EscapeString(v))
case template.HTML:
return v
}
panic(fmt.Sprintf("unexpected type %T", s))
}
func jsEscapeSafe(s string) template.HTML {
return template.HTML(template.JSEscapeString(s))
}
func queryEscape(s string) template.URL {
return template.URL(url.QueryEscape(s))
}
// dotEscape wraps a dots in names with ZWJ [U+200D] in order to prevent auto-linkers from detecting these as urls
func dotEscape(raw string) string {
return strings.ReplaceAll(raw, ".", "\u200d.\u200d")
}
// iif is an "inline-if", similar util.Iif[T] but templates need the non-generic version,
// and it could be simply used as "{{iif expr trueVal}}" (omit the falseVal).
func iif(condition any, vals ...any) any {
if isTemplateTruthy(condition) {
return vals[0]
} else if len(vals) > 1 {
return vals[1]
}
return nil
}
func isTemplateTruthy(v any) bool {
if v == nil {
return false
}
rv := reflect.ValueOf(v)
switch rv.Kind() {
case reflect.Bool:
return rv.Bool()
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return rv.Int() != 0
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
return rv.Uint() != 0
case reflect.Float32, reflect.Float64:
return rv.Float() != 0
case reflect.Complex64, reflect.Complex128:
return rv.Complex() != 0
case reflect.String, reflect.Slice, reflect.Array, reflect.Map:
return rv.Len() > 0
case reflect.Struct:
return true
default:
return !rv.IsNil()
}
}
// evalTokens evaluates the expression by tokens and returns the result, see the comment of eval.Expr for details.
// To use this helper function in templates, pass each token as a separate parameter.
//
// {{ $int64 := Eval $var "+" 1 }}
// {{ $float64 := Eval $var "+" 1.0 }}
//
// Golang's template supports comparable int types, so the int64 result can be used in later statements like {{if lt $int64 10}}
func evalTokens(tokens ...any) (any, error) {
n, err := eval.Expr(tokens...)
return n.Value, err
}
func userThemeName(user *user_model.User) string {
if user == nil || user.Theme == "" {
return setting.UI.DefaultTheme
}
if webtheme.IsThemeAvailable(user.Theme) {
return user.Theme
}
return setting.UI.DefaultTheme
}