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package page
import (
"bufio"
"bytes"
"io"
"os"
"text/template"
"time"
"gopkg.in/russross/blackfriday.v2"
"gopkg.in/yaml.v2"
)
type Page struct {
Name string
Head string
Body string
Date *time.Time
Published bool
Templates map[string]string
}
// Can be adjusted to change the base template used in rendering
var BaseTemplate = "inc/base.html"
// Used to split the .md files into yaml and markdown
var DocumentSplit = "|---\n"
// Renders a page
func (p *Page) Render(wr io.Writer) error {
if err := p.Read(); err != nil {
return err
}
t, err := template.ParseFiles(BaseTemplate)
if err != nil {
return err
}
// Automatically pull from the yml file if applicable
if p.Head != "" {
t, err = t.Parse(`
{{define "head"}}
{{.Head}}
{{end}}
`)
if err != nil {
return err
}
}
return t.Execute(wr, p)
}
// Reads in the special markdown file format for the website off of the disk
func (p *Page) Read() error {
yamlBuf := bytes.NewBuffer(nil)
markdownBuf := bytes.NewBuffer(nil)
fh, err := os.Open(p.Name + ".md")
if err != nil {
return err
}
defer fh.Close()
rdr := bufio.NewReader(fh)
// Read in the file and split between markdown and yaml buffers
yamlDone := false
for {
bytes, err := rdr.ReadBytes('\n')
if err == io.EOF {
break
} else if err != nil {
return err
}
// Is this the line where we stop reading the yaml and start reading markdown?
if DocumentSplit == string(bytes) && !yamlDone {
yamlDone = true
continue
}
if !yamlDone {
yamlBuf.Write(bytes)
} else {
markdownBuf.Write(bytes)
}
}
err = yaml.Unmarshal(yamlBuf.Bytes(), p)
if err != nil {
return err
}
p.Body = string(blackfriday.Run(markdownBuf.Bytes()))
return nil
}
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