/
site.go
253 lines (202 loc) · 4.96 KB
/
site.go
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package goven
import (
"fmt"
"os"
"path"
"time"
"sort"
"io/ioutil"
"encoding/json"
"path/filepath"
"text/template"
)
type SiteConfig struct {
SourceDir string `json:"sourceDir"`
PubDir string `json:"pubDir"`
ThemeDir string `json:"themeDir"`
BaseUrl string `json:"baseUrl"`
Title string `json:"title"`
Owner string `json:"owner"`
DateFormat string `json:"dateFormat"`
Root string
BasePath string
}
func NewSiteConfig(fpath string) *SiteConfig {
var err error
config := &SiteConfig{
Title: "A goven baked site",
BaseUrl: "http://www.example.com/",
Owner: "you <you@example.com>",
ThemeDir: "./theme",
SourceDir: "./posts",
PubDir: "./public",
}
buf := []byte{}
root := ""
if _, err = os.Stat(fpath); err != nil {
panic(err)
}
if buf, err = ioutil.ReadFile(fpath); err != nil {
panic(err)
}
if root, err = filepath.Abs(path.Dir(fpath)); err != nil {
panic(err)
}
if err = json.Unmarshal(buf, &config); err != nil {
panic(err)
}
config.SourceDir = path.Join(root, config.SourceDir)
config.PubDir = path.Join(root, config.PubDir)
config.ThemeDir = path.Join(root, config.ThemeDir)
return config
}
type Site struct {
Config *SiteConfig
Theme *Theme
}
func (s *Site) Url(p string) string {
return path.Join(s.Config.BaseUrl, p)
}
func NewSite(config *SiteConfig) *Site {
return &Site{
Config: config,
Theme: NewTheme(config.ThemeDir),
}
}
type PageTpl struct {
Name string
Template *template.Template
}
func (t *PageTpl) Exec(outf *os.File, page *Page) error {
return t.Template.ExecuteTemplate(outf, t.Name, page);
}
type Page struct {
Site *Site
Cdt time.Time
Path string
Title string
Template *PageTpl
Content map[string]interface{}
}
func (p *Page) Url() string {
return p.Site.Url(p.Path)
}
func (p *Page) Save() (err error) {
var outf *os.File
fpath := path.Join(p.Site.Config.PubDir, p.Path)
flags := os.O_CREATE | os.O_TRUNC | os.O_WRONLY
if outf, err = os.OpenFile(fpath, flags, 0666); err != nil {
return
}
if err = p.Template.Exec(outf, p); err != nil {
return
}
if err = outf.Close(); err != nil {
return
}
return
}
type PageContent map[string]interface{}
func NewPage(site *Site, path string, tpl *PageTpl, content PageContent) *Page {
return &Page{
Site: site,
Cdt: time.Now(),
Path: path,
Template: tpl,
Content: content,
}
}
type Pages []*Page
func (p Pages) Save() (err error) {
var page *Page
for _, page = range p {
if err = page.Save(); err != nil {
return
}
}
return
}
type Blog struct {
*Site
Posts Posts
}
func NewBlog(config *SiteConfig) *Blog {
return &Blog{
Site: NewSite(config),
Posts: NewPosts(config.SourceDir),
}
}
func (b *Blog) PostsPages() Pages {
pages := Pages{}
sort.Sort(PostsByCdt{b.Posts})
tpl := &PageTpl{
Name: "post.html",
Template: b.Site.Theme.Templates["post.html"],
}
for idx, post := range b.Posts {
ppath := fmt.Sprintf("%s.html", post.Slug())
page := NewPage(b.Site, ppath, tpl, PageContent{
"Post": post,
"Prev": nil,
"Next": nil,
})
page.Title = post.Title
if idx > 0 {
pages[idx - 1].Content["Next"] = page
page.Content["Prev"] = pages[idx - 1]
}
pages = append(pages, page)
}
return pages
}
func (b *Blog) PostsIndex() Pages {
sort.Sort(PostsByCdt{b.Posts})
pages := Pages{}
tpl := &PageTpl{
Name: "index.html",
Template: b.Site.Theme.Templates["index.html"],
}
return append(pages, NewPage(b.Site, "index.html", tpl, PageContent{
"Pages": b.PostsPages(),
}))
}
func (b *Blog) Build() (err error) {
if err = b.PostsPages().Save(); err != nil {
return
}
if err = b.PostsIndex().Save(); err != nil {
return
}
return
}
type Theme struct {
Path string
Templates map[string]*template.Template
}
func NewTheme(tpath string) *Theme {
var err error
var pattern string
var pages []string
var base *template.Template
var tmap = map[string]*template.Template{}
pattern = path.Join(tpath, "*.html")
base = template.Must(template.ParseGlob(pattern))
pattern = path.Join(tpath, "pages", "*.html")
if pages, err = filepath.Glob(pattern); err != nil {
panic(err)
}
for _, tpath := range pages {
var ts *template.Template
if ts, err = base.Clone(); err != nil {
panic(err)
}
if _, err = ts.ParseFiles(tpath); err != nil {
panic(err)
}
tmap[path.Base(tpath)] = ts
}
return &Theme{
Path: tpath,
Templates: tmap,
}
}