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cli.go
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cli.go
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package main
import (
"bufio"
"gopkg.in/urfave/cli.v1"
"io"
"log"
"os"
)
// API constants for communicating with Write.as.
const (
apiURL = "https://write.as"
hiddenAPIURL = "http://writeas7pm7rcdqg.onion"
readAPIURL = "https://write.as"
)
// Application constants.
const (
version = "1.0"
)
// Defaults for posts on Write.as.
const (
defaultFont = PostFontMono
)
// Available flags for creating posts
var postFlags = []cli.Flag{
cli.BoolFlag{
Name: "tor, t",
Usage: "Perform action on Tor hidden service",
},
cli.IntFlag{
Name: "tor-port",
Usage: "Use a different port to connect to Tor",
Value: 9150,
},
cli.BoolFlag{
Name: "code",
Usage: "Specifies this post is code",
},
cli.BoolFlag{
Name: "verbose, v",
Usage: "Make the operation more talkative",
},
cli.StringFlag{
Name: "font",
Usage: "Sets post font to given value",
Value: defaultFont,
},
cli.StringFlag{
Name: "user-agent",
Usage: "Sets the User-Agent for API requests",
Value: "",
},
}
func main() {
initialize()
cli.VersionFlag = cli.BoolFlag{
Name: "version, V",
Usage: "print the version",
}
// Run the app
app := cli.NewApp()
app.Name = "writeas"
app.Version = version
app.Usage = "Publish text quickly"
app.Authors = []cli.Author{
{
Name: "Write.as",
Email: "hello@write.as",
},
}
app.Action = cmdPost
app.Flags = postFlags
app.Commands = []cli.Command{
{
Name: "post",
Usage: "Alias for default action: create post from stdin",
Action: cmdPost,
Flags: postFlags,
Description: `Create a new post on Write.as from stdin.
Use the --code flag to indicate that the post should use syntax
highlighting. Or use the --font [value] argument to set the post's
appearance, where [value] is mono, monospace (default), wrap (monospace
font with word wrapping), serif, or sans.`,
},
{
Name: "new",
Usage: "Compose a new post from the command-line and publish",
Description: `An alternative to piping data to the program.
On Windows, this will use 'copy con' to start reading what you input from the
prompt. Press F6 or Ctrl-Z then Enter to end input.
On *nix, this will use the best available text editor, starting with the
value set to the WRITAS_EDITOR or EDITOR environment variable, or vim, or
finally nano.
Use the --code flag to indicate that the post should use syntax
highlighting. Or use the --font [value] argument to set the post's
appearance, where [value] is mono, monospace (default), wrap (monospace
font with word wrapping), serif, or sans.
If posting fails for any reason, 'writeas' will show you the temporary file
location and how to pipe it to 'writeas' to retry.`,
Action: cmdNew,
Flags: postFlags,
},
{
Name: "delete",
Usage: "Delete a post",
Action: cmdDelete,
Flags: []cli.Flag{
cli.BoolFlag{
Name: "tor, t",
Usage: "Delete via Tor hidden service",
},
cli.IntFlag{
Name: "tor-port",
Usage: "Use a different port to connect to Tor",
Value: 9150,
},
},
},
{
Name: "update",
Usage: "Update (overwrite) a post",
Action: cmdUpdate,
Flags: []cli.Flag{
cli.BoolFlag{
Name: "tor, t",
Usage: "Update via Tor hidden service",
},
cli.IntFlag{
Name: "tor-port",
Usage: "Use a different port to connect to Tor",
Value: 9150,
},
cli.BoolFlag{
Name: "code",
Usage: "Specifies this post is code",
},
cli.StringFlag{
Name: "font",
Usage: "Sets post font to given value",
},
},
},
{
Name: "get",
Usage: "Read a raw post",
Action: cmdGet,
Flags: []cli.Flag{
cli.BoolFlag{
Name: "tor, t",
Usage: "Get from Tor hidden service",
},
cli.IntFlag{
Name: "tor-port",
Usage: "Use a different port to connect to Tor",
Value: 9150,
},
},
},
{
Name: "add",
Usage: "Add an existing post locally",
Description: `A way to add an existing post to your local store for easy editing later.
This requires a post ID (from https://write.as/[ID]) and an Edit Token
(exported from another Write.as client, such as the Android app).
`,
Action: cmdAdd,
},
{
Name: "list",
Usage: "List local posts",
Action: cmdList,
Flags: []cli.Flag{
cli.BoolFlag{
Name: "id",
Usage: "Show list with post IDs (default)",
},
cli.BoolFlag{
Name: "url",
Usage: "Show list with URLs",
},
},
},
}
cli.CommandHelpTemplate = `NAME:
{{.Name}} - {{.Usage}}
USAGE:
writeas {{.Name}}{{if .Flags}} [command options]{{end}} [arguments...]{{if .Description}}
DESCRIPTION:
{{.Description}}{{end}}{{if .Flags}}
OPTIONS:
{{range .Flags}}{{.}}
{{end}}{{ end }}
`
app.Run(os.Args)
}
func initialize() {
// Ensure we have a data directory to use
if !dataDirExists() {
createDataDir()
}
}
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.Fatal(err)
}
numChunks++
numBytes += int64(len(buf))
fullPost = append(fullPost, buf...)
if err != nil && err != io.EOF {
log.Fatal(err)
}
}
return fullPost
}
func handlePost(fullPost []byte, c *cli.Context) error {
tor := c.Bool("tor") || c.Bool("t")
if c.Int("tor-port") != 0 {
torPort = c.Int("tor-port")
}
if tor {
Info(c, "Posting to hidden service...")
} else {
Info(c, "Posting...")
}
return DoPost(c, fullPost, c.String("font"), false, tor, c.Bool("code"))
}

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