mirror of
https://git.mills.io/prologic/zs.git
synced 2024-10-07 02:53:40 -04:00
257 lines
5.3 KiB
Go
257 lines
5.3 KiB
Go
package main
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"io"
|
|
"io/ioutil"
|
|
"log"
|
|
"os"
|
|
"os/exec"
|
|
"path"
|
|
"path/filepath"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/russross/blackfriday"
|
|
)
|
|
|
|
const (
|
|
ZSDIR = ".zs"
|
|
PUBDIR = ".pub"
|
|
)
|
|
|
|
func split2(s, delim string) (string, string) {
|
|
parts := strings.SplitN(s, delim, 2)
|
|
if len(parts) == 2 {
|
|
return parts[0], parts[1]
|
|
} else {
|
|
return parts[0], ""
|
|
}
|
|
}
|
|
|
|
func md(s string) (map[string]string, string) {
|
|
v := map[string]string{}
|
|
// FIXME: if no header?
|
|
header, body := split2(s, "\n\n")
|
|
for _, line := range strings.Split(header, "\n") {
|
|
key, value := split2(line, ":")
|
|
v[strings.ToLower(strings.TrimSpace(key))] = strings.TrimSpace(value)
|
|
}
|
|
return v, body
|
|
}
|
|
|
|
type EvalFn func(args []string, vars map[string]string) (string, error)
|
|
|
|
func render(s string, vars map[string]string, eval EvalFn) (string, error) {
|
|
b := []byte(s)
|
|
delim_open := []byte("{{")
|
|
delim_close := []byte("}}")
|
|
|
|
out := bytes.NewBuffer(nil)
|
|
for {
|
|
if from := bytes.Index(b, delim_open); from == -1 {
|
|
out.Write(b)
|
|
return out.String(), nil
|
|
} else {
|
|
to := bytes.Index(b, delim_close)
|
|
if to == -1 {
|
|
return "", fmt.Errorf("Close delim not found")
|
|
} else {
|
|
out.Write(b[:from])
|
|
cmd := b[from+len(delim_open) : to]
|
|
b = b[to+len(delim_close):]
|
|
m := strings.Fields(string(cmd))
|
|
if len(m) == 1 {
|
|
if v, ok := vars[m[0]]; ok {
|
|
out.Write([]byte(v))
|
|
continue
|
|
}
|
|
}
|
|
if res, err := eval(m, vars); err == nil {
|
|
out.Write([]byte(res))
|
|
} else {
|
|
log.Println(err) // silent
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func eval(cmd []string, vars map[string]string) (string, error) {
|
|
var outbuf, errbuf bytes.Buffer
|
|
c := exec.Command(path.Join(ZSDIR, cmd[0]), cmd[1:]...)
|
|
env := []string{"ZS=" + os.Args[0]}
|
|
for k, v := range vars {
|
|
env = append(env, "ZS_"+strings.ToUpper(k)+"="+v)
|
|
}
|
|
c.Env = append(c.Env, env...)
|
|
c.Stdout = &outbuf
|
|
c.Stderr = &errbuf
|
|
if err := c.Run(); err != nil {
|
|
log.Println(err)
|
|
c := exec.Command(path.Join(cmd[0]), cmd[1:]...)
|
|
c.Env = append(c.Env, env...)
|
|
c.Stdout = &outbuf
|
|
c.Stderr = &errbuf
|
|
if err := c.Run(); err != nil {
|
|
return "", err
|
|
}
|
|
}
|
|
if errbuf.Len() > 0 {
|
|
log.Println(errbuf.String())
|
|
}
|
|
return outbuf.String(), nil
|
|
}
|
|
|
|
func buildMarkdown(path string) error {
|
|
b, err := ioutil.ReadFile(path)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
v, body := md(string(b))
|
|
defaultVars(v, path)
|
|
content, err := render(body, v, eval)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
v["content"] = string(blackfriday.MarkdownBasic([]byte(content)))
|
|
b, err = ioutil.ReadFile(filepath.Join(ZSDIR, v["layout"]))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
content, err = render(string(b), v, eval)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
err = ioutil.WriteFile(v["output"], []byte(content), 0666)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func defaultVars(vars map[string]string, path string) {
|
|
if _, ok := vars["file"]; !ok {
|
|
vars["file"] = path
|
|
}
|
|
if _, ok := vars["url"]; !ok {
|
|
vars["url"] = path[:len(path)-len(filepath.Ext(path))] + ".html"
|
|
if strings.HasPrefix(vars["url"], "./") {
|
|
vars["url"] = vars["url"][2:]
|
|
}
|
|
}
|
|
if _, ok := vars["outdir"]; !ok {
|
|
vars["outdir"] = PUBDIR
|
|
}
|
|
if _, ok := vars["output"]; !ok {
|
|
vars["output"] = filepath.Join(PUBDIR, vars["url"])
|
|
}
|
|
if _, ok := vars["layout"]; !ok {
|
|
vars["layout"] = "index.html"
|
|
}
|
|
}
|
|
|
|
func copyFile(path string) error {
|
|
if in, err := os.Open(path); err != nil {
|
|
return err
|
|
} else {
|
|
defer in.Close()
|
|
if stat, err := in.Stat(); err != nil {
|
|
return err
|
|
} else {
|
|
// Directory?
|
|
if stat.Mode().IsDir() {
|
|
os.Mkdir(filepath.Join(PUBDIR, path), 0755)
|
|
return nil
|
|
}
|
|
if !stat.Mode().IsRegular() {
|
|
return nil
|
|
}
|
|
}
|
|
if out, err := os.Create(filepath.Join(PUBDIR, path)); err != nil {
|
|
return err
|
|
} else {
|
|
defer out.Close()
|
|
_, err = io.Copy(out, in)
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
|
|
func buildAll(once bool) {
|
|
lastModified := time.Unix(0, 0)
|
|
for {
|
|
os.Mkdir(PUBDIR, 0755)
|
|
err := filepath.Walk(".", func(path string, info os.FileInfo, err error) error {
|
|
// ignore hidden files and directories
|
|
if filepath.Base(path)[0] == '.' || strings.HasPrefix(path, ".") {
|
|
return nil
|
|
}
|
|
|
|
if info.ModTime().After(lastModified) {
|
|
ext := filepath.Ext(path)
|
|
if ext == ".md" || ext == "mkd" {
|
|
log.Println("mkd: ", path)
|
|
return buildMarkdown(path)
|
|
} else {
|
|
log.Println("raw: ", path)
|
|
return copyFile(path)
|
|
}
|
|
}
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
log.Println("ERROR:", err)
|
|
}
|
|
lastModified = time.Now()
|
|
if once {
|
|
break
|
|
}
|
|
time.Sleep(1 * time.Second)
|
|
}
|
|
}
|
|
|
|
func main() {
|
|
if len(os.Args) == 1 {
|
|
fmt.Println(os.Args[0], "<command> [args]")
|
|
return
|
|
}
|
|
cmd := os.Args[1]
|
|
args := os.Args[2:]
|
|
switch cmd {
|
|
case "build":
|
|
buildAll(true)
|
|
case "watch":
|
|
buildAll(false) // pass duration
|
|
case "var":
|
|
if len(args) == 0 {
|
|
// print error
|
|
return
|
|
}
|
|
if b, err := ioutil.ReadFile(args[0]); err == nil {
|
|
vars, _ := md(string(b))
|
|
defaultVars(vars, args[0])
|
|
if len(args) > 1 {
|
|
for _, a := range args[1:] {
|
|
fmt.Println(vars[a])
|
|
}
|
|
} else {
|
|
for k, v := range vars {
|
|
fmt.Println(k + ":" + v)
|
|
}
|
|
}
|
|
} else {
|
|
// print error
|
|
}
|
|
default:
|
|
cmd := exec.Command(path.Join(ZSDIR, cmd), args...)
|
|
cmd.Env = append(cmd.Env, "ZS="+os.Args[0])
|
|
cmd.Stdout = os.Stdout
|
|
cmd.Stderr = os.Stderr
|
|
if err := cmd.Run(); err != nil {
|
|
log.Println(err)
|
|
}
|
|
}
|
|
}
|