273 lines
7.9 KiB
Go
273 lines
7.9 KiB
Go
/* Copyright Azareal 2016 - 2017 */
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package main
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import "fmt"
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import "log"
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import "io"
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import "os"
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import "strings"
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import "mime"
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import "io/ioutil"
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import "path/filepath"
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import "encoding/json"
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import "net/http"
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var defaultTheme string
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var themes map[string]Theme = make(map[string]Theme)
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//var overriden_templates map[string]interface{} = make(map[string]interface{})
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var overriden_templates map[string]bool = make(map[string]bool)
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type Theme struct
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{
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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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Settings map[string]ThemeSetting
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Templates []TemplateMapping
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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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{
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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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{
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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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func init_themes() {
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themeFiles, err := ioutil.ReadDir("./themes")
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if err != nil {
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log.Fatal(err)
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}
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for _, themeFile := range themeFiles {
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if !themeFile.IsDir() {
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continue
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}
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themeName := themeFile.Name()
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log.Print("Adding theme '" + themeName + "'")
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themeFile, err := ioutil.ReadFile("./themes/" + themeName + "/theme.json")
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if err != nil {
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log.Fatal(err)
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}
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var theme Theme
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json.Unmarshal(themeFile, &theme)
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theme.Active = false // Set this to false, just in case someone explicitly overrode this value in the JSON file
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themes[theme.Name] = theme
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}
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}
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func add_theme_static_files(themeName string) {
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err := filepath.Walk("./themes/" + themeName + "/public", func(path string, f os.FileInfo, err error) error {
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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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log.Print("Attempting to add static file '" + path + "' for default theme '" + themeName + "'")
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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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path = strings.TrimPrefix(path,"themes/" + themeName + "/public")
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log.Print("Added the '" + path + "' static file for default theme " + themeName + ".")
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static_files["/static" + path] = SFile{data,0,int64(len(data)),mime.TypeByExtension(filepath.Ext("/themes/" + themeName + "/public" + path)),f,f.ModTime().UTC().Format(http.TimeFormat)}
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return nil
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})
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if err != nil {
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panic(err)
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}
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}
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func map_theme_templates(theme Theme) {
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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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log.Fatal("Invalid destination template name")
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}
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if themeTmpl.Source == "" {
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log.Fatal("Invalid source template name")
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}
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// go generate is one possibility, but it would simply add another step of compilation
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dest_tmpl_ptr, ok := tmpl_ptr_map[themeTmpl.Name]
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if !ok {
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log.Fatal("The destination template doesn't exist!")
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}
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source_tmpl_ptr, ok := tmpl_ptr_map[themeTmpl.Source]
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if !ok {
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log.Fatal("The source template doesn't exist!")
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}
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switch d_tmpl_ptr := dest_tmpl_ptr.(type) {
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case *func(TopicPage,io.Writer):
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switch s_tmpl_ptr := source_tmpl_ptr.(type) {
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case *func(TopicPage,io.Writer):
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//overriden_templates[themeTmpl.Name] = d_tmpl_ptr
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overriden_templates[themeTmpl.Name] = true
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log.Print("Topic Handle")
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fmt.Println(template_topic_handle)
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log.Print("Before")
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fmt.Println(d_tmpl_ptr)
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fmt.Println(*d_tmpl_ptr)
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log.Print("Source")
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fmt.Println(s_tmpl_ptr)
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fmt.Println(*s_tmpl_ptr)
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*d_tmpl_ptr = *s_tmpl_ptr
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log.Print("After")
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fmt.Println(d_tmpl_ptr)
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fmt.Println(*d_tmpl_ptr)
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log.Print("Source")
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fmt.Println(s_tmpl_ptr)
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fmt.Println(*s_tmpl_ptr)
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default:
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log.Fatal("The source and destination templates are incompatible")
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}
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case *func(TopicsPage,io.Writer):
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switch s_tmpl_ptr := source_tmpl_ptr.(type) {
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case *func(TopicsPage,io.Writer):
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//overriden_templates[themeTmpl.Name] = d_tmpl_ptr
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overriden_templates[themeTmpl.Name] = true
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*d_tmpl_ptr = *s_tmpl_ptr
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default:
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log.Fatal("The source and destination templates are incompatible")
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}
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case *func(ForumPage,io.Writer):
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switch s_tmpl_ptr := source_tmpl_ptr.(type) {
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case *func(ForumPage,io.Writer):
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//overriden_templates[themeTmpl.Name] = d_tmpl_ptr
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overriden_templates[themeTmpl.Name] = true
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*d_tmpl_ptr = *s_tmpl_ptr
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default:
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log.Fatal("The source and destination templates are incompatible")
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}
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case *func(ForumsPage,io.Writer):
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switch s_tmpl_ptr := source_tmpl_ptr.(type) {
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case *func(ForumsPage,io.Writer):
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//overriden_templates[themeTmpl.Name] = d_tmpl_ptr
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overriden_templates[themeTmpl.Name] = true
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*d_tmpl_ptr = *s_tmpl_ptr
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default:
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log.Fatal("The source and destination templates are incompatible")
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}
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case *func(ProfilePage,io.Writer):
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switch s_tmpl_ptr := source_tmpl_ptr.(type) {
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case *func(ProfilePage,io.Writer):
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//overriden_templates[themeTmpl.Name] = d_tmpl_ptr
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overriden_templates[themeTmpl.Name] = true
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*d_tmpl_ptr = *s_tmpl_ptr
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default:
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log.Fatal("The source and destination templates are incompatible")
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}
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case *func(Page,io.Writer):
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switch s_tmpl_ptr := source_tmpl_ptr.(type) {
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case *func(Page,io.Writer):
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//overriden_templates[themeTmpl.Name] = d_tmpl_ptr
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overriden_templates[themeTmpl.Name] = true
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*d_tmpl_ptr = *s_tmpl_ptr
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default:
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log.Fatal("The source and destination templates are incompatible")
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}
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default:
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log.Fatal("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 reset_template_overrides() {
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log.Print("Resetting the template overrides")
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for name, _ := range overriden_templates {
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log.Print("Resetting '" + name + "' template override")
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origin_pointer, ok := tmpl_ptr_map["o_" + name]
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if !ok {
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//log.Fatal("The origin template doesn't exist!")
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log.Print("The origin template doesn't exist!")
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return
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}
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dest_tmpl_ptr, ok := tmpl_ptr_map[name]
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if !ok {
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//log.Fatal("The destination template doesn't exist!")
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log.Print("The destination template doesn't exist!")
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return
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}
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// Not really a pointer, more of a function handle, an artifact from one of the earlier versions of themes.go
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switch o_ptr := origin_pointer.(type) {
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case func(TopicPage,io.Writer):
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switch d_ptr := dest_tmpl_ptr.(type) {
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case *func(TopicPage,io.Writer):
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log.Print("Topic Handle")
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fmt.Println(template_topic_handle)
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log.Print("Before")
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fmt.Println(d_ptr)
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fmt.Println(*d_ptr)
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log.Print("Origin")
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fmt.Println(o_ptr)
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*d_ptr = o_ptr
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log.Print("After")
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fmt.Println(d_ptr)
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fmt.Println(*d_ptr)
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log.Print("Origin")
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fmt.Println(o_ptr)
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default:
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log.Fatal("The origin and destination templates are incompatible")
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}
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case func(TopicsPage,io.Writer):
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switch d_ptr := dest_tmpl_ptr.(type) {
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case *func(TopicsPage,io.Writer):
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*d_ptr = o_ptr
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default:
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log.Fatal("The origin and destination templates are incompatible")
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}
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case func(ForumPage,io.Writer):
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switch d_ptr := dest_tmpl_ptr.(type) {
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case *func(ForumPage,io.Writer):
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*d_ptr = o_ptr
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default:
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log.Fatal("The origin and destination templates are incompatible")
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}
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case func(ForumsPage,io.Writer):
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switch d_ptr := dest_tmpl_ptr.(type) {
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case *func(ForumsPage,io.Writer):
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*d_ptr = o_ptr
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default:
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log.Fatal("The origin and destination templates are incompatible")
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}
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case func(ProfilePage,io.Writer):
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switch d_ptr := dest_tmpl_ptr.(type) {
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case *func(ProfilePage,io.Writer):
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*d_ptr = o_ptr
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default:
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log.Fatal("The origin and destination templates are incompatible")
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}
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default:
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log.Fatal("Unknown destination template type!")
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}
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log.Print("The template override was reset")
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}
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overriden_templates = make(map[string]bool)
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log.Print("All of the template overrides have been reset")
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}
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