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server.go
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server.go
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package main
import (
"fmt"
"html/template"
"io"
"log"
"net/http"
"os"
"path/filepath"
)
/*
directory tree
--------------
themes/
|
└── default/
|
├── static/
| |
│ ├── css/
│ ├── img/
│ └── js/
|
└── template/
*/
const (
themeDir = "themes"
staticDir = "static"
templateDir = "template"
staticURL = "/static/"
)
type Server struct {
home string
theme string
templatePath string
staticPath string
docs []*Note
docIndex map[string]*Note
tagIndex map[string][]*Note
templates map[string]*template.Template
}
func (s *Server) loadDocs() error {
walk := func(path string, info os.FileInfo, err error) error {
if !info.IsDir() && filepath.Ext(path) == ".note" {
// parse *.note files
note := new(Note)
if err = note.ParseFile(path); err != nil {
return err
}
// index the note pointer for Server
s.docs = append(s.docs, note)
s.docIndex[note.Slug] = note
for _, tag := range note.Tags {
s.tagIndex[tag] = append(s.tagIndex[tag], note)
}
}
return nil
}
return filepath.Walk(s.home, walk)
}
func (s *Server) loadTemplates() error {
base := filepath.Join(s.templatePath, "base.html")
walk := func(path string, info os.FileInfo, err error) error {
name := info.Name()
if filepath.Ext(name) == ".html" && name != "base.html" {
tmpl, err := template.New(name).Funcs(Funcs).ParseFiles(base, path)
if err != nil {
return err
} else {
s.templates[name] = tmpl
}
}
return nil
}
return filepath.Walk(s.templatePath, walk)
}
func (s *Server) Init(home, theme string) {
log.Println("Initializing server...")
EnsureDirs(home)
s.home = home
s.theme = theme
// set the static and the template path
themePath := filepath.Join(RunningDir(), themeDir, s.theme)
if IsNotExist(themePath) {
panic("not found the theme")
} else {
s.templatePath = filepath.Join(themePath, templateDir)
s.staticPath = filepath.Join(themePath, staticDir)
}
// load docs
log.Println("loading notes...")
s.docIndex = make(map[string]*Note)
s.tagIndex = make(map[string][]*Note)
Assert(s.loadDocs())
// load templates
log.Println("loading templates...")
s.templates = make(map[string]*template.Template)
Assert(s.loadTemplates())
}
func (s *Server) Render(w io.Writer, template string, data interface{}) {
tmpl, ok := s.templates[template]
if ok {
tmpl.ExecuteTemplate(w, "base", data)
} else {
panic(fmt.Sprintf("not found the template:%s", template))
}
}
func (s *Server) Run(host string, port int) error {
// set view handlers
for pattern, handler := range URL_MAPPING {
http.HandleFunc(pattern, handler)
}
// set static file handler
fileServer := http.FileServer(http.Dir(s.staticPath))
fileServer = http.StripPrefix(staticURL, fileServer)
http.Handle(staticURL, fileServer)
// run server
log.Printf("Server running at %s:%d", host, port)
addr := fmt.Sprintf("%s:%d", host, port)
return http.ListenAndServe(addr, nil)
}