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|
package main
import (
"bytes"
"errors"
"net/url"
"os"
"os/exec"
"github.com/chzyer/readline"
)
type BrowserState struct {
*History
*Config
Modal []byte
Marks map[string]string
Identities Identities
NamedTours map[string]*Tour
DefaultTour Tour
CurrentTour *Tour
Readline *readline.Instance
Printer Printer
}
type History struct {
Url *url.URL
Depth int
DocType string
Body []byte
Formatted string
Links []Link
Back *History
Forward *History
// Non-negative if we browsed here via a page link, else -1.
//
// The non-negative value is the index in the "back" page's
// list of links that got us here.
NavIndex int
}
type Link struct {
Text string
Target *url.URL
Prompt bool
}
func NewBrowserState(conf *Config) *BrowserState {
state := &BrowserState{
History: &History{
Url: nil,
Depth: 0,
NavIndex: -1,
},
Config: conf,
}
state.CurrentTour = &state.DefaultTour
return state
}
type Printer interface {
PrintModal(*BrowserState, []byte) error
PrintPage(*BrowserState, string) error
}
type PromptPrinter struct{}
func (_ PromptPrinter) PrintModal(state *BrowserState, contents []byte) error {
_, err := os.Stdout.Write(contents)
return err
}
func (_ PromptPrinter) PrintPage(state *BrowserState, body string) error {
if state.Quiet {
return nil
}
lessarg := []string{}
switch state.Pager {
case "auto":
lessarg = []string{"-F"}
fallthrough
case "always":
less, err := exec.LookPath("less")
if err != nil {
return err
}
cmd := exec.Command(less, lessarg...)
cmd.Stdin = bytes.NewBufferString(body)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
return cmd.Run()
case "never":
_, err := os.Stdout.WriteString(body)
return err
default:
return errors.New("invalid 'pager' value in configuration")
}
}
|
