2019-09-10 02:35:16 +00:00
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package main
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import (
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"fmt"
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"io/ioutil"
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"net"
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"os"
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"os/exec"
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"os/user"
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"regexp"
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"strconv"
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"strings"
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"time"
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"tildegit.org/sloum/bombadillo/cmdparse"
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"tildegit.org/sloum/bombadillo/cui"
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2019-09-11 03:13:30 +00:00
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// "tildegit.org/sloum/bombadillo/gemini"
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// "tildegit.org/sloum/bombadillo/gopher"
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"tildegit.org/sloum/bombadillo/http"
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"tildegit.org/sloum/bombadillo/telnet"
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2019-09-10 02:35:16 +00:00
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)
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//------------------------------------------------\\
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// + + + T Y P E S + + + \\
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//--------------------------------------------------\\
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type client struct {
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Height int
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Width int
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Options map[string]string
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Message string
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PageState Pages
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BookMarks Bookmarks
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TopBar Headbar
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FootBar Footbar
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}
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//------------------------------------------------\\
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// + + + R E C E I V E R S + + + \\
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//--------------------------------------------------\\
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func (c *client) GetSize() {
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for {
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redraw := false
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cmd := exec.Command("stty", "size")
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cmd.Stdin = os.Stdin
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out, err := cmd.Output()
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if err != nil {
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fmt.Println("Fatal error: Unable to retrieve terminal size")
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os.Exit(5)
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}
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var h, w int
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fmt.Sscan(string(out), &h, &w)
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if h != c.Height || w != c.Width {
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redraw = true
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}
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c.Height = h
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c.Width = w
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if redraw {
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c.Draw()
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}
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time.Sleep(1 * time.Second)
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}
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}
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func (c *client) Draw() {
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// TODO build this out.
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// It should call all of the renders
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// and add them to the a string buffer
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// It should then print the buffer
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}
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func (c *client) TakeControlInput() {
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input := cui.Getch()
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switch input {
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case 'j', 'J':
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// scroll down one line
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c.Scroll(1)
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case 'k', 'K':
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// scroll up one line
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c.Scroll(-1)
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case 'q', 'Q':
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// quite bombadillo
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cui.Exit()
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case 'g':
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// scroll to top
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c.Scroll(-len(c.PageState.History[c.PageState.Position].WrappedContent))
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case 'G':
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// scroll to bottom
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c.Scroll(len(c.PageState.History[c.PageState.Position].WrappedContent))
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case 'd':
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// scroll down 75%
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distance := c.Height - c.Height / 4
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c.Scroll(distance)
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case 'u':
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// scroll up 75%
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distance := c.Height - c.Height / 4
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c.Scroll(-distance)
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case 'b':
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// go back
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err := c.PageState.NavigateHistory(-1)
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if err != nil {
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c.SetMessage(err.Error(), false)
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c.DrawMessage()
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} else {
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c.Draw()
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}
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case 'B':
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// open the bookmarks browser
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c.BookMarks.ToggleOpen()
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c.Draw()
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case 'f', 'F':
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// go forward
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err := c.PageState.NavigateHistory(1)
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if err != nil {
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c.SetMessage(err.Error(), false)
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c.DrawMessage()
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} else {
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c.Draw()
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}
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case '\t':
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// Toggle bookmark browser focus on/off
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c.BookMarks.ToggleFocused()
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c.Draw()
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case ':', ' ':
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// Process a command
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c.ClearMessage()
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c.ClearMessageLine()
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entry, err := cui.GetLine()
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c.ClearMessageLine()
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if err != nil {
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c.SetMessage(err.Error(), true)
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c.DrawMessage()
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break
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} else if strings.TrimSpace(entry) == "" {
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break
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}
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parser := cmdparse.NewParser(strings.NewReader(entry))
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p, err := parser.Parse()
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if err != nil {
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c.SetMessage(err.Error(), true)
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c.DrawMessage()
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} else {
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err := c.routeCommandInput(p)
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if err != nil {
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c.SetMessage(err.Error(), true)
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c.DrawMessage()
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}
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}
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}
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}
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func (c *client) routeCommandInput(com *cmdparse.Command) error {
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var err error
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switch com.Type {
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case cmdparse.SIMPLE:
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c.simpleCommand(com.Action)
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case cmdparse.GOURL:
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c.goToURL(com.Target)
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case cmdparse.GOLINK:
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c.goToLink(com.Target)
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case cmdparse.DO:
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c.doCommand(com.Action, com.Value)
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case cmdparse.DOLINK:
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// err = doLinkCommand(com.Action, com.Target)
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case cmdparse.DOAS:
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c.doCommandAs(com.Action, com.Value)
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case cmdparse.DOLINKAS:
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// err = doLinkCommandAs(com.Action, com.Target, com.Value)
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default:
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return fmt.Errorf("Unknown command entry!")
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}
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return err
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}
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func (c *client) simpleCommand(action string) {
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action = strings.ToUpper(action)
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switch action {
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case "Q", "QUIT":
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cui.Exit()
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case "H", "HOME":
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if c.Options["homeurl"] != "unset" {
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go c.Visit(c.Options["homeurl"])
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} else {
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c.SetMessage(fmt.Sprintf("No home address has been set"), false)
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c.DrawMessage()
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}
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case "B", "BOOKMARKS":
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c.BookMarks.ToggleOpen()
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case "SEARCH":
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c.search()
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case "HELP", "?":
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go c.Visit(helplocation)
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default:
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c.SetMessage(fmt.Sprintf("Unknown action %q", action), true)
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c.DrawMessage()
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}
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}
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func (c *client) doCommand(action string, values []string) {
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if length := len(values); length != 1 {
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c.SetMessage(fmt.Sprintf("Expected 1 argument, received %d", len(values)), true)
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c.DrawMessage()
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return
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}
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switch action {
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case "CHECK", "C":
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c.displayConfigValue(values[0])
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default:
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c.SetMessage(fmt.Sprintf("Unknown action %q", action), true)
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c.DrawMessage()
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}
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}
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func (c *client) doCommandAs(action string, values []string) {
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if len(values) < 2 {
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c.SetMessage(fmt.Sprintf("Expected 1 argument, received %d", len(values)), true)
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c.DrawMessage()
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return
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}
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if values[0] == "." {
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values[0] = c.PageState.History[c.PageState.Position].Location.Full
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}
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switch action {
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case "ADD", "A":
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2019-09-11 03:13:30 +00:00
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msg, err := c.BookMarks.Add(values)
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2019-09-10 02:35:16 +00:00
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if err != nil {
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c.SetMessage(err.Error(), true)
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c.DrawMessage()
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return
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2019-09-11 03:13:30 +00:00
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} else {
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c.SetMessage(msg, false)
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c.DrawMessage()
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2019-09-10 02:35:16 +00:00
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}
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err = saveConfig()
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if err != nil {
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c.SetMessage("Error saving bookmark to file", true)
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c.DrawMessage()
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}
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if c.BookMarks.IsOpen {
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c.Draw()
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}
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case "WRITE", "W":
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// TODO figure out how best to handle file
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// writing... it will depend on request model
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// using fetch would be best
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// - - - - - - - - - - - - - - - - - - - - -
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// var data []byte
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// if values[0] == "." {
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// d, err := c.getCurrentPageRawData()
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// if err != nil {
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// c.SetMessage(err.Error(), true)
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// c.DrawMessage()
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// return
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// }
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// data = []byte(d)
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// }
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// fp, err := c.saveFile(data, strings.Join(values[1:], " "))
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// if err != nil {
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// c.SetMessage(err.Error(), true)
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// c.DrawMessage()
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// return
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// }
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// c.SetMessage(fmt.Sprintf("File saved to: %s", fp), false)
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// c.DrawMessage()
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case "SET", "S":
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if _, ok := c.Options[values[0]]; ok {
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c.Options[values[0]] = strings.Join(values[1:], " ")
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err := saveConfig()
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if err != nil {
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c.SetMessage("Value set, but error saving config to file", true)
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c.DrawMessage()
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} else {
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c.SetMessage(fmt.Sprintf("%s is now set to %q", values[0], c.Options[values[0]]), true)
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c.DrawMessage()
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}
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return
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}
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c.SetMessage(fmt.Sprintf("Unable to set %s, it does not exist", values[0]), true)
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c.DrawMessage()
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return
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}
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c.SetMessage(fmt.Sprintf("Unknown command structure"), true)
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}
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func (c *client) getCurrentPageUrl() (string, error) {
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if c.PageState.Length < 1 {
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return "", fmt.Errorf("There are no pages in history")
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}
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return c.PageState.History[c.PageState.Position].Location.Full, nil
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}
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func (c *client) getCurrentPageRawData() (string, error) {
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if c.PageState.Length < 1 {
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return "", fmt.Errorf("There are no pages in history")
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}
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return c.PageState.History[c.PageState.Position].RawContent, nil
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}
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func (c *client) saveFile(data []byte, name string) (string, error) {
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savePath := c.Options["savelocation"] + name
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err := ioutil.WriteFile(savePath, data, 0644)
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if err != nil {
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return "", err
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}
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return savePath, nil
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}
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func (c *client) search() {
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c.ClearMessage()
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c.ClearMessageLine()
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fmt.Print("?")
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entry, err := cui.GetLine()
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c.ClearMessageLine()
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if err != nil {
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c.SetMessage(err.Error(), true)
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c.DrawMessage()
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return
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} else if strings.TrimSpace(entry) == "" {
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return
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}
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u, err := MakeUrl(c.Options["searchurl"])
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if err != nil {
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c.SetMessage("'searchurl' is not set to a valid url", true)
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c.DrawMessage()
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return
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}
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switch u.Scheme {
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case "gopher":
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go c.Visit(fmt.Sprintf("%s\t%s",u.Full,entry))
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case "gemini":
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// TODO url escape the entry variable
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escapedEntry := entry
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go c.Visit(fmt.Sprintf("%s?%s",u.Full,escapedEntry))
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case "http", "https":
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2019-09-11 03:13:30 +00:00
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c.Visit(u.Full)
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2019-09-10 02:35:16 +00:00
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default:
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c.SetMessage(fmt.Sprintf("%q is not a supported protocol", u.Scheme), true)
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c.DrawMessage()
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}
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}
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func (c *client) Scroll(amount int) {
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page := c.PageState.History[c.PageState.Position]
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bottom := len(page.WrappedContent) - c.Height
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if amount < 0 && page.ScrollPosition == 0 {
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c.SetMessage("You are already at the top", false)
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c.DrawMessage()
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fmt.Print("\a")
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return
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} else if amount > 0 && page.ScrollPosition == bottom || bottom < 0 {
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c.SetMessage("You are already at the bottom", false)
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c.DrawMessage()
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fmt.Print("\a")
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return
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}
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newScrollPosition := page.ScrollPosition + amount
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if newScrollPosition < 0 {
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newScrollPosition = 0
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} else if newScrollPosition > bottom {
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newScrollPosition = bottom
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}
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page.ScrollPosition = newScrollPosition
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c.Draw()
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}
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func (c *client) displayConfigValue(setting string) {
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if val, ok := c.Options[setting]; ok {
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c.SetMessage(fmt.Sprintf("%s is set to: %q", setting, val), false)
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c.DrawMessage()
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} else {
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c.SetMessage(fmt.Sprintf("Invalid: %q does not exist", setting), true)
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c.DrawMessage()
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}
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}
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|
|
|
func (c *client) SetMessage(msg string, isError bool) {
|
|
|
|
leadIn, leadOut := "", ""
|
|
|
|
if isError {
|
|
|
|
leadIn = "\033[31m"
|
|
|
|
leadOut = "\033[0m"
|
|
|
|
}
|
|
|
|
|
|
|
|
c.Message = fmt.Sprintf("%s%s%s", leadIn, msg, leadOut)
|
|
|
|
}
|
|
|
|
|
|
|
|
func (c *client) DrawMessage() {
|
|
|
|
c.ClearMessageLine()
|
|
|
|
cui.MoveCursorTo(c.Height-1, 0)
|
|
|
|
fmt.Print(c.Message)
|
|
|
|
}
|
|
|
|
|
|
|
|
func (c *client) ClearMessage() {
|
|
|
|
c.Message = ""
|
|
|
|
}
|
|
|
|
|
|
|
|
func (c *client) ClearMessageLine() {
|
|
|
|
cui.MoveCursorTo(c.Height-1, 0)
|
|
|
|
cui.Clear("line")
|
|
|
|
}
|
|
|
|
|
|
|
|
func (c *client) goToURL(u string) {
|
|
|
|
if num, _ := regexp.MatchString(`^-?\d+.?\d*$`, u); num {
|
|
|
|
c.goToLink(u)
|
|
|
|
return
|
|
|
|
}
|
|
|
|
|
|
|
|
go c.Visit(u)
|
|
|
|
}
|
|
|
|
|
|
|
|
func (c *client) goToLink(l string) {
|
|
|
|
if num, _ := regexp.MatchString(`^-?\d+$`, l); num && c.PageState.Length > 0 {
|
|
|
|
linkcount := len(c.PageState.History[c.PageState.Position].Links)
|
|
|
|
item, err := strconv.Atoi(l)
|
|
|
|
if err != nil {
|
|
|
|
c.SetMessage(fmt.Sprintf("Invalid link id: %s", l), true)
|
|
|
|
c.DrawMessage()
|
|
|
|
return
|
|
|
|
}
|
|
|
|
if item <= linkcount && item > 0 {
|
|
|
|
linkurl := c.PageState.History[c.PageState.Position].Links[item-1]
|
|
|
|
c.Visit(linkurl)
|
|
|
|
} else {
|
|
|
|
c.SetMessage(fmt.Sprintf("Invalid link id: %s", l), true)
|
|
|
|
c.DrawMessage()
|
|
|
|
return
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
c.SetMessage(fmt.Sprintf("Invalid link id: %s", l), true)
|
|
|
|
c.DrawMessage()
|
|
|
|
}
|
|
|
|
|
|
|
|
func (c *client) Visit(url string) {
|
|
|
|
u, err := MakeUrl(url)
|
|
|
|
if err != nil {
|
|
|
|
c.SetMessage(err.Error(), true)
|
|
|
|
c.DrawMessage()
|
|
|
|
return
|
|
|
|
}
|
|
|
|
|
|
|
|
switch u.Scheme {
|
|
|
|
case "gopher":
|
|
|
|
// TODO send over to gopher request
|
|
|
|
case "gemini":
|
|
|
|
// TODO send over to gemini request
|
2019-09-11 03:13:30 +00:00
|
|
|
case "telnet":
|
|
|
|
c.SetMessage("Attempting to start telnet session", false)
|
|
|
|
c.DrawMessage()
|
|
|
|
msg, err := telnet.StartSession(u.Host, u.Port)
|
|
|
|
if err != nil {
|
|
|
|
c.SetMessage(err.Error(), true)
|
|
|
|
c.DrawMessage()
|
|
|
|
} else {
|
|
|
|
c.SetMessage(msg, true)
|
|
|
|
c.DrawMessage()
|
|
|
|
}
|
|
|
|
c.Draw()
|
2019-09-10 02:35:16 +00:00
|
|
|
case "http", "https":
|
|
|
|
c.SetMessage("Attempting to open in web browser", false)
|
|
|
|
c.DrawMessage()
|
|
|
|
if strings.ToUpper(c.Options["openhttp"]) == "TRUE" {
|
2019-09-11 03:13:30 +00:00
|
|
|
msg, err := http.OpenInBrowser(u.Full)
|
2019-09-10 02:35:16 +00:00
|
|
|
if err != nil {
|
|
|
|
c.SetMessage(err.Error(), true)
|
|
|
|
} else {
|
2019-09-11 03:13:30 +00:00
|
|
|
c.SetMessage(msg, false)
|
2019-09-10 02:35:16 +00:00
|
|
|
}
|
|
|
|
c.DrawMessage()
|
|
|
|
} else {
|
2019-09-11 03:13:30 +00:00
|
|
|
c.SetMessage("'openhttp' is not set to true, cannot open web link", false)
|
2019-09-10 02:35:16 +00:00
|
|
|
c.DrawMessage()
|
|
|
|
}
|
|
|
|
default:
|
|
|
|
c.SetMessage(fmt.Sprintf("%q is not a supported protocol", u.Scheme), true)
|
|
|
|
c.DrawMessage()
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
//------------------------------------------------\\
|
|
|
|
// + + + F U N C T I O N S + + + \\
|
|
|
|
//--------------------------------------------------\\
|
|
|
|
|
|
|
|
func MakeClient(name string) *client {
|
|
|
|
var userinfo, _ = user.Current()
|
|
|
|
var options = map[string]string{
|
|
|
|
"homeurl": "gopher://colorfield.space:70/1/bombadillo-info",
|
|
|
|
"savelocation": userinfo.HomeDir,
|
|
|
|
"searchengine": "gopher://gopher.floodgap.com:70/7/v2/vs",
|
|
|
|
"openhttp": "false",
|
|
|
|
"httpbrowser": "lynx",
|
|
|
|
"configlocation": userinfo.HomeDir,
|
|
|
|
}
|
|
|
|
c := client{0, 0, options, "", MakePages(), MakeBookmarks(), MakeHeadbar(name), MakeFootbar()}
|
|
|
|
c.GetSize()
|
|
|
|
return &c
|
|
|
|
}
|
|
|
|
|
|
|
|
// Retrieve a byte slice of raw response dataa
|
|
|
|
// from a url string
|
|
|
|
func Fetch(url string) ([]byte, error) {
|
|
|
|
u, err := MakeUrl(url)
|
|
|
|
if err != nil {
|
|
|
|
return []byte(""), err
|
|
|
|
}
|
|
|
|
|
|
|
|
timeOut := time.Duration(5) * time.Second
|
|
|
|
|
|
|
|
if u.Host == "" || u.Port == "" {
|
|
|
|
return []byte(""), fmt.Errorf("Incomplete request url")
|
|
|
|
}
|
|
|
|
|
|
|
|
addr := u.Host + ":" + u.Port
|
|
|
|
|
|
|
|
conn, err := net.DialTimeout("tcp", addr, timeOut)
|
|
|
|
if err != nil {
|
|
|
|
return []byte(""), err
|
|
|
|
}
|
|
|
|
|
|
|
|
send := u.Resource + "\n"
|
|
|
|
|
|
|
|
_, err = conn.Write([]byte(send))
|
|
|
|
if err != nil {
|
|
|
|
return []byte(""), err
|
|
|
|
}
|
|
|
|
|
|
|
|
result, err := ioutil.ReadAll(conn)
|
|
|
|
if err != nil {
|
|
|
|
return []byte(""), err
|
|
|
|
}
|
|
|
|
|
|
|
|
return result, err
|
|
|
|
}
|