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package main
import (
"bytes"
"errors"
"fmt"
"strings"
)
var (
ErrInvalidURL = errors.New("that's not a valid URL")
ErrNotAMark = errors.New("that's not a known mark name")
)
func MarkAdd(state *BrowserState, conf *Config, name, target string) error {
u, _, err := parseURL(target, state, conf.DefaultScheme)
if err != nil {
return ErrInvalidURL
}
state.Marks[name] = u.String()
if err := saveMarks(state.Marks); err != nil {
return err
}
state.Modal = []byte(fmt.Sprintf("Saved mark %s to %s\n", name, u.String()))
return Print(state)
}
func MarkGo(state *BrowserState, conf *Config, name string) error {
_, target, err := findMark(state, name)
if err != nil {
return err
}
return Go(state, target, conf)
}
func MarkList(state *BrowserState) error {
buf := &bytes.Buffer{}
for name, target := range state.Marks {
_, err := fmt.Fprintf(buf, "%s: %s\n", name, target)
if err != nil {
return err
}
}
state.Modal = buf.Bytes()
if len(state.Modal) == 0 {
state.Modal = []byte("(no marks)\n")
}
return Print(state)
}
func MarkDelete(state *BrowserState, name string) error {
name, _, err := findMark(state, name)
if err != nil {
return err
}
delete(state.Marks, name)
if err := saveMarks(state.Marks); err != nil {
return err
}
state.Modal = []byte(fmt.Sprintf("Deleted mark %s\n", name))
return Print(state)
}
func findMark(state *BrowserState, prefix string) (string, string, error) {
found := 0
fullname := ""
value := ""
for name, target := range state.Marks {
if strings.HasPrefix(name, prefix) {
found += 1
value = target
fullname = name
}
}
switch found {
case 0:
return "", "", ErrNotAMark
case 1:
return fullname, value, nil
default:
return "", "", fmt.Errorf("too ambiguous - found %d matching marks", found)
}
}
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