267 lines
8.5 KiB
Go
267 lines
8.5 KiB
Go
/* Copyright Azareal 2016 - 2019 */
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package common
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import (
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//"fmt"
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"bytes"
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"errors"
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"io"
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"io/ioutil"
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"log"
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"mime"
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"net/http"
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"os"
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"path/filepath"
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"strings"
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"text/template"
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)
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type Theme struct {
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Path string // Redirect this file to another folder
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Name string
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FriendlyName string
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Version string
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Creator string
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FullImage string
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MobileFriendly bool
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Disabled bool
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HideFromThemes bool
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BgAvatars bool // For profiles, at the moment
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ForkOf string
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Tag string
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URL string
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Docks []string // Allowed Values: leftSidebar, rightSidebar, footer
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Settings map[string]ThemeSetting
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Templates []TemplateMapping
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TemplatesMap map[string]string
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TmplPtr map[string]interface{}
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Resources []ThemeResource
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ResourceTemplates *template.Template
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// Dock intercepters
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// TODO: Implement this
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MapTmplToDock map[string]ThemeMapTmplToDock // map[dockName]data
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RunOnDock func(string) string //(dock string) (sbody string)
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// This variable should only be set and unset by the system, not the theme meta file
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Active bool
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}
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type ThemeSetting struct {
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FriendlyName string
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Options []string
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}
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type TemplateMapping struct {
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Name string
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Source string
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//When string
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}
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type ThemeResource struct {
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Name string
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Location string
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Loggedin bool // Only serve this resource to logged in users
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}
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type ThemeMapTmplToDock struct {
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//Name string
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File string
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}
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// TODO: It might be unsafe to call the template parsing functions with fsnotify, do something more concurrent
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func (theme *Theme) LoadStaticFiles() error {
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theme.ResourceTemplates = template.New("")
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template.Must(theme.ResourceTemplates.ParseGlob("./themes/" + theme.Name + "/public/*.css"))
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// It should be safe for us to load the files for all the themes in memory, as-long as the admin hasn't setup a ridiculous number of themes
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return theme.AddThemeStaticFiles()
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}
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func (theme *Theme) AddThemeStaticFiles() error {
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phraseMap := GetTmplPhrases()
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// TODO: Use a function instead of a closure to make this more testable? What about a function call inside the closure to take the theme variable into account?
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return filepath.Walk("./themes/"+theme.Name+"/public", func(path string, f os.FileInfo, err error) error {
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DebugLog("Attempting to add static file '" + path + "' for default theme '" + theme.Name + "'")
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if err != nil {
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return err
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}
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if f.IsDir() {
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return nil
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}
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path = strings.Replace(path, "\\", "/", -1)
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data, err := ioutil.ReadFile(path)
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if err != nil {
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return err
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}
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var ext = filepath.Ext(path)
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if ext == ".css" && len(data) != 0 {
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var b bytes.Buffer
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var pieces = strings.Split(path, "/")
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var filename = pieces[len(pieces)-1]
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err = theme.ResourceTemplates.ExecuteTemplate(&b, filename, CSSData{Phrases: phraseMap})
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if err != nil {
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return err
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}
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data = b.Bytes()
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}
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path = strings.TrimPrefix(path, "themes/"+theme.Name+"/public")
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gzipData := compressBytesGzip(data)
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StaticFiles.Set("/static/"+theme.Name+path, SFile{data, gzipData, 0, int64(len(data)), int64(len(gzipData)), mime.TypeByExtension(ext), f, f.ModTime().UTC().Format(http.TimeFormat)})
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DebugLog("Added the '/" + theme.Name + path + "' static file for theme " + theme.Name + ".")
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return nil
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})
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}
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func (theme *Theme) MapTemplates() {
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if theme.Templates != nil {
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for _, themeTmpl := range theme.Templates {
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if themeTmpl.Name == "" {
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LogError(errors.New("Invalid destination template name"))
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}
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if themeTmpl.Source == "" {
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LogError(errors.New("Invalid source template name"))
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}
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// `go generate` is one possibility for letting plugins inject custom page structs, but it would simply add another step of compilation. It might be simpler than the current build process from the perspective of the administrator?
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destTmplPtr, ok := TmplPtrMap[themeTmpl.Name]
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if !ok {
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return
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}
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sourceTmplPtr, ok := TmplPtrMap[themeTmpl.Source]
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if !ok {
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LogError(errors.New("The source template doesn't exist!"))
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}
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switch dTmplPtr := destTmplPtr.(type) {
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case *func(CustomPagePage, io.Writer) error:
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switch sTmplPtr := sourceTmplPtr.(type) {
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case *func(CustomPagePage, io.Writer) error:
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//overridenTemplates[themeTmpl.Name] = d_tmpl_ptr
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overridenTemplates[themeTmpl.Name] = true
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*dTmplPtr = *sTmplPtr
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default:
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LogError(errors.New("The source and destination templates are incompatible"))
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}
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case *func(TopicPage, io.Writer) error:
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switch sTmplPtr := sourceTmplPtr.(type) {
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case *func(TopicPage, io.Writer) error:
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//overridenTemplates[themeTmpl.Name] = d_tmpl_ptr
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overridenTemplates[themeTmpl.Name] = true
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*dTmplPtr = *sTmplPtr
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default:
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LogError(errors.New("The source and destination templates are incompatible"))
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}
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case *func(TopicListPage, io.Writer) error:
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switch sTmplPtr := sourceTmplPtr.(type) {
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case *func(TopicListPage, io.Writer) error:
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//overridenTemplates[themeTmpl.Name] = d_tmpl_ptr
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overridenTemplates[themeTmpl.Name] = true
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*dTmplPtr = *sTmplPtr
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default:
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LogError(errors.New("The source and destination templates are incompatible"))
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}
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case *func(ForumPage, io.Writer) error:
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switch sTmplPtr := sourceTmplPtr.(type) {
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case *func(ForumPage, io.Writer) error:
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//overridenTemplates[themeTmpl.Name] = d_tmpl_ptr
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overridenTemplates[themeTmpl.Name] = true
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*dTmplPtr = *sTmplPtr
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default:
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LogError(errors.New("The source and destination templates are incompatible"))
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}
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case *func(ForumsPage, io.Writer) error:
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switch sTmplPtr := sourceTmplPtr.(type) {
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case *func(ForumsPage, io.Writer) error:
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//overridenTemplates[themeTmpl.Name] = d_tmpl_ptr
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overridenTemplates[themeTmpl.Name] = true
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*dTmplPtr = *sTmplPtr
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default:
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LogError(errors.New("The source and destination templates are incompatible"))
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}
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case *func(ProfilePage, io.Writer) error:
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switch sTmplPtr := sourceTmplPtr.(type) {
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case *func(ProfilePage, io.Writer) error:
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//overridenTemplates[themeTmpl.Name] = d_tmpl_ptr
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overridenTemplates[themeTmpl.Name] = true
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*dTmplPtr = *sTmplPtr
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default:
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LogError(errors.New("The source and destination templates are incompatible"))
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}
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case *func(CreateTopicPage, io.Writer) error:
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switch sTmplPtr := sourceTmplPtr.(type) {
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case *func(CreateTopicPage, io.Writer) error:
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//overridenTemplates[themeTmpl.Name] = d_tmpl_ptr
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overridenTemplates[themeTmpl.Name] = true
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*dTmplPtr = *sTmplPtr
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default:
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LogError(errors.New("The source and destination templates are incompatible"))
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}
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case *func(IPSearchPage, io.Writer) error:
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switch sTmplPtr := sourceTmplPtr.(type) {
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case *func(IPSearchPage, io.Writer) error:
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//overridenTemplates[themeTmpl.Name] = d_tmpl_ptr
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overridenTemplates[themeTmpl.Name] = true
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*dTmplPtr = *sTmplPtr
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default:
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LogError(errors.New("The source and destination templates are incompatible"))
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}
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case *func(AccountDashPage, io.Writer) error:
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switch sTmplPtr := sourceTmplPtr.(type) {
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case *func(AccountDashPage, io.Writer) error:
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//overridenTemplates[themeTmpl.Name] = d_tmpl_ptr
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overridenTemplates[themeTmpl.Name] = true
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*dTmplPtr = *sTmplPtr
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default:
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LogError(errors.New("The source and destination templates are incompatible"))
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}
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case *func(ErrorPage, io.Writer) error:
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switch sTmplPtr := sourceTmplPtr.(type) {
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case *func(ErrorPage, io.Writer) error:
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//overridenTemplates[themeTmpl.Name] = d_tmpl_ptr
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overridenTemplates[themeTmpl.Name] = true
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*dTmplPtr = *sTmplPtr
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default:
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LogError(errors.New("The source and destination templates are incompatible"))
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}
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case *func(Page, io.Writer) error:
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switch sTmplPtr := sourceTmplPtr.(type) {
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case *func(Page, io.Writer) error:
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//overridenTemplates[themeTmpl.Name] = d_tmpl_ptr
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overridenTemplates[themeTmpl.Name] = true
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*dTmplPtr = *sTmplPtr
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default:
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LogError(errors.New("The source and destination templates are incompatible"))
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}
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default:
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log.Print("themeTmpl.Name: ", themeTmpl.Name)
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log.Print("themeTmpl.Source: ", themeTmpl.Source)
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LogError(errors.New("Unknown destination template type!"))
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}
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}
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}
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}
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func (theme Theme) HasDock(name string) bool {
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for _, dock := range theme.Docks {
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if dock == name {
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return true
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}
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}
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return false
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}
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func (theme Theme) BuildDock(dock string) (sbody string) {
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runOnDock := theme.RunOnDock
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if runOnDock != nil {
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return runOnDock(dock)
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}
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return ""
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}
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