posts.go
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posts.go
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	package api

	import (
	"bufio"
	"fmt"
	"io"
	"io/ioutil"
	"os"
	"path/filepath"
	"strings"

	"github.com/writeas/writeas-cli/config"
	"github.com/writeas/writeas-cli/fileutils"
	"github.com/writeas/writeas-cli/log"
	writeas "go.code.as/writeas.v2"
	cli "gopkg.in/urfave/cli.v1"
	)

	const (
	postsFile = "posts.psv"
	separator = `\|`
	)

	// Post holds the basic authentication information for a Write.as post.
	type Post struct {
	ID string
	EditToken string
	}

	func AddPost(c *cli.Context, id, token string) error {
	f, err := os.OpenFile(filepath.Join(config.UserDataDir(c.App.ExtraInfo()["configDir"]), postsFile), os.O_WRONLY\|os.O_APPEND\|os.O_CREATE, 0600)
	if err != nil {
	return fmt.Errorf("Error creating local posts list: %s", err)
	}
	defer f.Close()

	l := fmt.Sprintf("%s%s%s\n", id, separator, token)

	if _, err = f.WriteString(l); err != nil {
	return fmt.Errorf("Error writing to local posts list: %s", err)
	}

	return nil
	}

	func TokenFromID(c *cli.Context, id string) string {
	post := fileutils.FindLine(filepath.Join(config.UserDataDir(c.App.ExtraInfo()["configDir"]), postsFile), id)
	if post == "" {
	return ""
	}

	parts := strings.Split(post, separator)
	if len(parts) < 2 {
	return ""
	}

	return parts[1]
	}

	func removePost(path, id string) {
	fileutils.RemoveLine(filepath.Join(config.UserDataDir(path), postsFile), id)
	}

	func GetPosts(c cli.Context) []Post {
	lines := fileutils.ReadData(filepath.Join(config.UserDataDir(c.App.ExtraInfo()["configDir"]), postsFile))

	posts := []Post{}

	if lines != nil && len(*lines) > 0 {
	parts := make([]string, 2)
	for _, l := range *lines {
	parts = strings.Split(l, separator)
	if len(parts) < 2 {
	continue
	}
	posts = append(posts, Post{ID: parts[0], EditToken: parts[1]})
	}
	}

	return &posts
	}

	func ComposeNewPost() (string, *[]byte) {
	f, err := fileutils.TempFile(os.TempDir(), "WApost", "txt")
	if err != nil {
	if config.Debug() {
	panic(err)
	} else {
	log.Errorln("Error creating temp file: %s", err)
	return "", nil
	}
	}
	f.Close()

	cmd := config.EditPostCmd(f.Name())
	if cmd == nil {
	os.Remove(f.Name())

	fmt.Println(config.NoEditorErr)
	return "", nil
	}
	cmd.Stdin, cmd.Stdout, cmd.Stderr = os.Stdin, os.Stdout, os.Stderr
	if err := cmd.Start(); err != nil {
	os.Remove(f.Name())

	if config.Debug() {
	panic(err)
	} else {
	log.Errorln("Error starting editor: %s", err)
	return "", nil
	}
	}

	// If something fails past this point, the temporary post file won't be
	// removed automatically. Calling function should handle this.
	if err := cmd.Wait(); err != nil {
	if config.Debug() {
	panic(err)
	} else {
	log.Errorln("Editor finished with error: %s", err)
	return "", nil
	}
	}

	post, err := ioutil.ReadFile(f.Name())
	if err != nil {
	if config.Debug() {
	panic(err)
	} else {
	log.Errorln("Error reading post: %s", err)
	return "", nil
	}
	}
	return f.Name(), &post
	}

	func WritePost(postsDir string, p *writeas.Post) error {
	postFilename := p.ID
	collDir := ""
	if p.Collection != nil {
	postFilename = p.Slug
	collDir = p.Collection.Alias
	}
	postFilename += PostFileExt

	txtFile := p.Content
	if p.Title != "" {
	txtFile = "# " + p.Title + "\n\n" + txtFile
	}
	return ioutil.WriteFile(filepath.Join(postsDir, collDir, postFilename), []byte(txtFile), 0644)
	}

	func HandlePost(fullPost []byte, c cli.Context) (writeas.Post, error) {
	tor := config.IsTor(c)
	if c.Int("tor-port") != 0 {
	TorPort = c.Int("tor-port")
	}
	if tor {
	log.Info(c, "Posting to hidden service...")
	} else {
	log.Info(c, "Posting...")
	}

	return DoPost(c, fullPost, c.String("font"), false, tor, c.Bool("code"))
	}

	func ReadStdIn() []byte {
	numBytes, numChunks := int64(0), int64(0)
	r := bufio.NewReader(os.Stdin)
	fullPost := []byte{}
	buf := make([]byte, 0, 1024)
	for {
	n, err := r.Read(buf[:cap(buf)])
	buf = buf[:n]
	if n == 0 {
	if err == nil {
	continue
	}
	if err == io.EOF {
	break
	}
	log.ErrorlnQuit("Error reading from stdin: %v", err)
	}
	numChunks++
	numBytes += int64(len(buf))

	fullPost = append(fullPost, buf...)
	if err != nil && err != io.EOF {
	log.ErrorlnQuit("Error appending to end of post: %v", err)
	}
	}

	return fullPost
	}

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