Implement key bindings subsystem
Which is not yet rigged up
This commit is contained in:
Drew DeVault
parent
d274bf926c
commit
8d20e9218e
7 changed files with 400 additions and 34 deletions
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@ -91,26 +91,27 @@ alternatives=text/plain,text/html
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[lbinds]
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#
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# Binds are of the form <key sequence> = <command to run>
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# To use '=' in a key sequence, substitute it with "Eq": "<Ctrl+Eq>"
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# If you wish to bind #, you can wrap the key sequence in quotes: "#" = quit
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# Binds are of the form <input keys> = <output keys>
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# Pressing <input keys> in sequence will then simulate pressing <output keys>
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#
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# lbinds are bindings that take effect in the list view
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# mbinds are bindings that take effect in the message view
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# Use <C-*> to refer to control+something.
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#
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# lbinds are effective in the list view
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# mbinds are effective in the message view
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q = :quit<Enter>
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<Ctrl+c>=:quit<Enter>
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<C-c> = :quit<Enter>
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j = :next-message<Enter>
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<Down> = :next-message<Enter>
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<Ctrl+d>=:next-message --scroll 50%<Enter>
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<Ctrl+f>=:next-message --scroll 100%<Enter>
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<C-d> = :next-message --scroll 50%<Enter>
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<C-f> = :next-message --scroll 100%<Enter>
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<PageDown> = :next-message --scroll 100%<Enter>
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<WheelDown> = :next-message --scroll 1<Enter>
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k = :previous-message<Enter>
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<Up> = :previous-message<Enter>
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<Ctrl+u>=:previous-message --scroll 50%<Enter>
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<Ctrl+b>=:previous-message --scroll 100%<Enter>
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<C-u> = :previous-message --scroll 50%<Enter>
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<C-b> = :previous-message --scroll 100%<Enter>
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<PageUp> = :previous-message --scroll 100%<Enter>
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<WheelUp> = :previous-message --scroll 1<Enter>
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g = :select-message 0<Enter>
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284
config/bindings.go
Normal file
284
config/bindings.go
Normal file
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@ -0,0 +1,284 @@
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package config
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import (
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"bytes"
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"errors"
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"fmt"
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"io"
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"strings"
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"github.com/gdamore/tcell"
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)
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type KeyStroke struct {
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Key tcell.Key
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Rune rune
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}
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type Binding struct {
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Output []KeyStroke
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Input []KeyStroke
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}
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type KeyBindings []*Binding
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const (
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BINDING_FOUND = iota
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BINDING_INCOMPLETE
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BINDING_NOT_FOUND
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)
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type BindingSearchResult int
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func NewKeyBindings() *KeyBindings {
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return &KeyBindings{}
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}
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func (bindings *KeyBindings) Add(binding *Binding) {
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// TODO: Search for conflicts?
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*bindings = append(*bindings, binding)
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}
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func (bindings *KeyBindings) GetBinding(
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input []KeyStroke) (BindingSearchResult, []KeyStroke) {
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incomplete := false
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// TODO: This could probably be a sorted list to speed things up
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// TODO: Deal with bindings that share a prefix
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for _, binding := range *bindings {
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if len(binding.Input) < len(input) {
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continue
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}
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for i, stroke := range input {
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if stroke != binding.Input[i] {
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goto next
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}
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}
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if len(binding.Input) != len(input) {
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incomplete = true
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} else {
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return BINDING_FOUND, binding.Output
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}
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next:
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}
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if incomplete {
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return BINDING_INCOMPLETE, nil
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}
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return BINDING_NOT_FOUND, nil
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}
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var (
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keyNames map[string]tcell.Key
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)
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func ParseKeyStrokes(keystrokes string) ([]KeyStroke, error) {
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var strokes []KeyStroke
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buf := bytes.NewBufferString(keystrokes)
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for {
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tok, _, err := buf.ReadRune()
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if err == io.EOF {
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break
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} else if err != nil {
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return nil, err
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}
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// TODO: make it possible to bind to < or > themselves (and default to
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// switching accounts)
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switch tok {
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case '<':
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name, err := buf.ReadString(byte('>'))
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if err == io.EOF {
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return nil, errors.New("Expecting '>'")
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} else if err != nil {
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return nil, err
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} else if name == ">" {
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return nil, errors.New("Expected a key name")
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}
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name = name[:len(name)-1]
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if key, ok := keyNames[strings.ToLower(name)]; ok {
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strokes = append(strokes, KeyStroke{
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Key: key,
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})
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} else {
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return nil, errors.New(fmt.Sprintf("Unknown key '%s'", name))
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}
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case '>':
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return nil, errors.New("Found '>' without '<'")
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default:
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strokes = append(strokes, KeyStroke{
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Key: tcell.KeyRune,
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Rune: tok,
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})
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}
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}
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return strokes, nil
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}
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func ParseBinding(input, output string) (*Binding, error) {
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in, err := ParseKeyStrokes(input)
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if err != nil {
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return nil, err
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}
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out, err := ParseKeyStrokes(output)
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if err != nil {
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return nil, err
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}
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return &Binding{
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Input: in,
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Output: out,
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}, nil
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}
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func init() {
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keyNames = make(map[string]tcell.Key)
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keyNames["up"] = tcell.KeyUp
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keyNames["down"] = tcell.KeyDown
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keyNames["right"] = tcell.KeyRight
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keyNames["left"] = tcell.KeyLeft
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keyNames["upleft"] = tcell.KeyUpLeft
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keyNames["upright"] = tcell.KeyUpRight
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keyNames["downleft"] = tcell.KeyDownLeft
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keyNames["downright"] = tcell.KeyDownRight
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keyNames["center"] = tcell.KeyCenter
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keyNames["pgup"] = tcell.KeyPgUp
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keyNames["pgdn"] = tcell.KeyPgDn
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keyNames["home"] = tcell.KeyHome
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keyNames["end"] = tcell.KeyEnd
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keyNames["insert"] = tcell.KeyInsert
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keyNames["delete"] = tcell.KeyDelete
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keyNames["help"] = tcell.KeyHelp
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keyNames["exit"] = tcell.KeyExit
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keyNames["clear"] = tcell.KeyClear
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keyNames["cancel"] = tcell.KeyCancel
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keyNames["print"] = tcell.KeyPrint
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keyNames["pause"] = tcell.KeyPause
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keyNames["backtab"] = tcell.KeyBacktab
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keyNames["f1"] = tcell.KeyF1
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keyNames["f2"] = tcell.KeyF2
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keyNames["f3"] = tcell.KeyF3
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keyNames["f4"] = tcell.KeyF4
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keyNames["f5"] = tcell.KeyF5
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keyNames["f6"] = tcell.KeyF6
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keyNames["f7"] = tcell.KeyF7
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keyNames["f8"] = tcell.KeyF8
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keyNames["f9"] = tcell.KeyF9
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keyNames["f10"] = tcell.KeyF10
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keyNames["f11"] = tcell.KeyF11
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keyNames["f12"] = tcell.KeyF12
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keyNames["f13"] = tcell.KeyF13
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keyNames["f14"] = tcell.KeyF14
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keyNames["f15"] = tcell.KeyF15
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keyNames["f16"] = tcell.KeyF16
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keyNames["f17"] = tcell.KeyF17
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keyNames["f18"] = tcell.KeyF18
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keyNames["f19"] = tcell.KeyF19
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keyNames["f20"] = tcell.KeyF20
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keyNames["f21"] = tcell.KeyF21
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keyNames["f22"] = tcell.KeyF22
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keyNames["f23"] = tcell.KeyF23
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keyNames["f24"] = tcell.KeyF24
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keyNames["f25"] = tcell.KeyF25
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keyNames["f26"] = tcell.KeyF26
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keyNames["f27"] = tcell.KeyF27
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keyNames["f28"] = tcell.KeyF28
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keyNames["f29"] = tcell.KeyF29
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keyNames["f30"] = tcell.KeyF30
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keyNames["f31"] = tcell.KeyF31
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keyNames["f32"] = tcell.KeyF32
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keyNames["f33"] = tcell.KeyF33
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keyNames["f34"] = tcell.KeyF34
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keyNames["f35"] = tcell.KeyF35
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keyNames["f36"] = tcell.KeyF36
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keyNames["f37"] = tcell.KeyF37
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keyNames["f38"] = tcell.KeyF38
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keyNames["f39"] = tcell.KeyF39
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keyNames["f40"] = tcell.KeyF40
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keyNames["f41"] = tcell.KeyF41
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keyNames["f42"] = tcell.KeyF42
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keyNames["f43"] = tcell.KeyF43
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keyNames["f44"] = tcell.KeyF44
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keyNames["f45"] = tcell.KeyF45
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keyNames["f46"] = tcell.KeyF46
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keyNames["f47"] = tcell.KeyF47
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keyNames["f48"] = tcell.KeyF48
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keyNames["f49"] = tcell.KeyF49
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keyNames["f50"] = tcell.KeyF50
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keyNames["f51"] = tcell.KeyF51
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keyNames["f52"] = tcell.KeyF52
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keyNames["f53"] = tcell.KeyF53
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keyNames["f54"] = tcell.KeyF54
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keyNames["f55"] = tcell.KeyF55
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keyNames["f56"] = tcell.KeyF56
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keyNames["f57"] = tcell.KeyF57
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keyNames["f58"] = tcell.KeyF58
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keyNames["f59"] = tcell.KeyF59
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keyNames["f60"] = tcell.KeyF60
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keyNames["f61"] = tcell.KeyF61
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keyNames["f62"] = tcell.KeyF62
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keyNames["f63"] = tcell.KeyF63
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keyNames["f64"] = tcell.KeyF64
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keyNames["c-space"] = tcell.KeyCtrlSpace
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keyNames["c-a"] = tcell.KeyCtrlA
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keyNames["c-b"] = tcell.KeyCtrlB
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keyNames["c-c"] = tcell.KeyCtrlC
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keyNames["c-d"] = tcell.KeyCtrlD
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keyNames["c-e"] = tcell.KeyCtrlE
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keyNames["c-f"] = tcell.KeyCtrlF
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keyNames["c-g"] = tcell.KeyCtrlG
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keyNames["c-h"] = tcell.KeyCtrlH
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keyNames["c-i"] = tcell.KeyCtrlI
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keyNames["c-j"] = tcell.KeyCtrlJ
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keyNames["c-k"] = tcell.KeyCtrlK
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keyNames["c-l"] = tcell.KeyCtrlL
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keyNames["c-m"] = tcell.KeyCtrlM
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keyNames["c-n"] = tcell.KeyCtrlN
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keyNames["c-o"] = tcell.KeyCtrlO
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keyNames["c-p"] = tcell.KeyCtrlP
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keyNames["c-q"] = tcell.KeyCtrlQ
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keyNames["c-r"] = tcell.KeyCtrlR
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keyNames["c-s"] = tcell.KeyCtrlS
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keyNames["c-t"] = tcell.KeyCtrlT
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keyNames["c-u"] = tcell.KeyCtrlU
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keyNames["c-v"] = tcell.KeyCtrlV
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keyNames["c-w"] = tcell.KeyCtrlW
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keyNames["c-x"] = tcell.KeyCtrlX
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keyNames["c-y"] = tcell.KeyCtrlY
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keyNames["c-z"] = tcell.KeyCtrlZ
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keyNames["c-]"] = tcell.KeyCtrlLeftSq
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keyNames["c-\\"] = tcell.KeyCtrlBackslash
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keyNames["c-["] = tcell.KeyCtrlRightSq
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keyNames["c-^"] = tcell.KeyCtrlCarat
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keyNames["c-_"] = tcell.KeyCtrlUnderscore
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keyNames["NUL"] = tcell.KeyNUL
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keyNames["SOH"] = tcell.KeySOH
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keyNames["STX"] = tcell.KeySTX
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keyNames["ETX"] = tcell.KeyETX
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keyNames["EOT"] = tcell.KeyEOT
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keyNames["ENQ"] = tcell.KeyENQ
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keyNames["ACK"] = tcell.KeyACK
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keyNames["BEL"] = tcell.KeyBEL
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keyNames["BS"] = tcell.KeyBS
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keyNames["TAB"] = tcell.KeyTAB
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keyNames["LF"] = tcell.KeyLF
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keyNames["VT"] = tcell.KeyVT
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keyNames["FF"] = tcell.KeyFF
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keyNames["CR"] = tcell.KeyCR
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keyNames["SO"] = tcell.KeySO
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keyNames["SI"] = tcell.KeySI
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keyNames["DLE"] = tcell.KeyDLE
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keyNames["DC1"] = tcell.KeyDC1
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keyNames["DC2"] = tcell.KeyDC2
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keyNames["DC3"] = tcell.KeyDC3
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keyNames["DC4"] = tcell.KeyDC4
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keyNames["NAK"] = tcell.KeyNAK
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keyNames["SYN"] = tcell.KeySYN
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keyNames["ETB"] = tcell.KeyETB
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keyNames["CAN"] = tcell.KeyCAN
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keyNames["EM"] = tcell.KeyEM
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keyNames["SUB"] = tcell.KeySUB
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keyNames["ESC"] = tcell.KeyESC
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keyNames["FS"] = tcell.KeyFS
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keyNames["GS"] = tcell.KeyGS
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keyNames["RS"] = tcell.KeyRS
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keyNames["US"] = tcell.KeyUS
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keyNames["DEL"] = tcell.KeyDEL
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}
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61
config/bindings_test.go
Normal file
61
config/bindings_test.go
Normal file
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@ -0,0 +1,61 @@
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package config
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import (
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"fmt"
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"testing"
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"github.com/gdamore/tcell"
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"github.com/stretchr/testify/assert"
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)
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func TestGetBinding(t *testing.T) {
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assert := assert.New(t)
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bindings := NewKeyBindings()
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add := func(binding, cmd string) {
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b, _ := ParseBinding(binding, cmd)
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bindings.Add(b)
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}
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add("abc", ":abc")
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add("cba", ":cba")
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add("foo", ":foo")
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add("bar", ":bar")
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test := func(input []KeyStroke, result int, output string) {
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_output, _ := ParseKeyStrokes(output)
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r, out := bindings.GetBinding(input)
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assert.Equal(result, int(r), fmt.Sprintf(
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"%s: Expected result %d, got %d", output, result, r))
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assert.Equal(_output, out, fmt.Sprintf(
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"%s: Expected output %v, got %v", output, _output, out))
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}
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test([]KeyStroke{
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{tcell.KeyRune, 'a'},
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}, BINDING_INCOMPLETE, "")
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test([]KeyStroke{
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{tcell.KeyRune, 'a'},
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{tcell.KeyRune, 'b'},
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{tcell.KeyRune, 'c'},
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}, BINDING_FOUND, ":abc")
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test([]KeyStroke{
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{tcell.KeyRune, 'c'},
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{tcell.KeyRune, 'b'},
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{tcell.KeyRune, 'a'},
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}, BINDING_FOUND, ":cba")
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test([]KeyStroke{
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{tcell.KeyRune, 'f'},
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{tcell.KeyRune, 'o'},
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}, BINDING_INCOMPLETE, "")
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test([]KeyStroke{
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{tcell.KeyRune, '4'},
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{tcell.KeyRune, '0'},
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{tcell.KeyRune, '4'},
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}, BINDING_NOT_FOUND, "")
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add("<C-a>", "c-a")
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test([]KeyStroke{
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{tcell.KeyCtrlA, 0},
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}, BINDING_FOUND, "c-a")
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}
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@ -29,6 +29,7 @@ type AccountConfig struct {
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}
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type AercConfig struct {
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Lbinds *KeyBindings
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Ini *ini.File `ini:"-"`
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Accounts []AccountConfig `ini:"-"`
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Ui UIConfig
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@ -94,7 +95,9 @@ func LoadConfig(root *string) (*AercConfig, error) {
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}
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file.NameMapper = mapName
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config := &AercConfig{
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Lbinds: NewKeyBindings(),
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Ini: file,
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Ui: UIConfig{
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IndexFormat: "%4C %Z %D %-17.17n %s",
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TimestampFormat: "%F %l:%M %p",
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@ -110,9 +113,18 @@ func LoadConfig(root *string) (*AercConfig, error) {
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EmptyMessage: "(no messages)",
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},
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}
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if ui, err := file.GetSection("ui"); err != nil {
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if ui, err := file.GetSection("ui"); err == nil {
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ui.MapTo(config.Ui)
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}
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if lbinds, err := file.GetSection("lbinds"); err == nil {
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for key, value := range lbinds.KeysHash() {
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binding, err := ParseBinding(key, value)
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if err != nil {
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return nil, err
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}
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config.Lbinds.Add(binding)
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}
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}
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accountsPath := path.Join(*root, "accounts.conf")
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if accounts, err := loadAccountConfig(accountsPath); err != nil {
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return nil, err
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3
go.mod
3
go.mod
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@ -6,12 +6,13 @@ require (
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github.com/emersion/go-sasl v0.0.0-20161116183048-7e096a0a6197 // indirect
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github.com/gdamore/encoding v0.0.0-20151215212835-b23993cbb635
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github.com/gdamore/tcell v1.0.0
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github.com/go-ini/ini v1.32.0
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github.com/go-ini/ini v1.42.0
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github.com/google/shlex v0.0.0-20181106134648-c34317bd91bf
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github.com/kyoh86/xdg v0.0.0-20171127140545-8db68a8ea76a
|
||||
github.com/lucasb-eyer/go-colorful v0.0.0-20180531031333-d9cec903b20c
|
||||
github.com/mattn/go-isatty v0.0.3
|
||||
github.com/mattn/go-runewidth v0.0.2
|
||||
github.com/nsf/termbox-go v0.0.0-20180129072728-88b7b944be8b
|
||||
github.com/stretchr/testify v1.3.0
|
||||
golang.org/x/text v0.3.0
|
||||
)
|
||||
|
|
|
|||
9
go.sum
9
go.sum
|
|
@ -1,3 +1,5 @@
|
|||
github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
|
||||
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
|
||||
github.com/emersion/go-imap v1.0.0-beta.1 h1:bTCaVlUnb5mKoW9lEukusxguSYYZPer+q0g5t+vw5X0=
|
||||
github.com/emersion/go-imap v1.0.0-beta.1/go.mod h1:oydmHwiyv92ZOiNfQY9BDax5heePWN8P2+W1B2T6qjc=
|
||||
github.com/emersion/go-imap-idle v0.0.0-20180114101550-2af93776db6b h1:q4qkNe/W10qFGD3RWd4meQTkD0+Zrz0L4ekMvlptg60=
|
||||
|
|
@ -10,6 +12,8 @@ github.com/gdamore/tcell v1.0.0 h1:oaly4AkxvDT5ffKHV/n4L8iy6FxG2QkAVl0M6cjryuE=
|
|||
github.com/gdamore/tcell v1.0.0/go.mod h1:tqyG50u7+Ctv1w5VX67kLzKcj9YXR/JSBZQq/+mLl1A=
|
||||
github.com/go-ini/ini v1.32.0 h1:/MArBHSS0TFR28yPPDK1vPIjt4wUnPBfb81i6iiyKvA=
|
||||
github.com/go-ini/ini v1.32.0/go.mod h1:ByCAeIL28uOIIG0E3PJtZPDL8WnHpFKFOtgjp+3Ies8=
|
||||
github.com/go-ini/ini v1.42.0 h1:TWr1wGj35+UiWHlBA8er89seFXxzwFn11spilrrj+38=
|
||||
github.com/go-ini/ini v1.42.0/go.mod h1:ByCAeIL28uOIIG0E3PJtZPDL8WnHpFKFOtgjp+3Ies8=
|
||||
github.com/google/shlex v0.0.0-20181106134648-c34317bd91bf h1:7+FW5aGwISbqUtkfmIpZJGRgNFg2ioYPvFaUxdqpDsg=
|
||||
github.com/google/shlex v0.0.0-20181106134648-c34317bd91bf/go.mod h1:RpwtwJQFrIEPstU94h88MWPXP2ektJZ8cZ0YntAmXiE=
|
||||
github.com/kyoh86/xdg v0.0.0-20171127140545-8db68a8ea76a h1:vLFQnHOnCnmlySdpHAKF+mH7MhsthJgpBbfexVhHwxY=
|
||||
|
|
@ -21,5 +25,10 @@ github.com/mattn/go-isatty v0.0.3/go.mod h1:M+lRXTBqGeGNdLjl/ufCoiOlB5xdOkqRJdNx
|
|||
github.com/mattn/go-runewidth v0.0.2 h1:UnlwIPBGaTZfPQ6T1IGzPI0EkYAQmT9fAEJ/poFC63o=
|
||||
github.com/mattn/go-runewidth v0.0.2/go.mod h1:LwmH8dsx7+W8Uxz3IHJYH5QSwggIsqBzpuz5H//U1FU=
|
||||
github.com/nsf/termbox-go v0.0.0-20180129072728-88b7b944be8b/go.mod h1:IuKpRQcYE1Tfu+oAQqaLisqDeXgjyyltCfsaoYN18NQ=
|
||||
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
|
||||
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
|
||||
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
|
||||
github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
|
||||
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
|
||||
golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
|
||||
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
|
||||
|
|
|
|||
|
|
@ -126,11 +126,9 @@ func (ex *ExLine) Event(event tcell.Event) bool {
|
|||
case tcell.KeyEsc, tcell.KeyCtrlC:
|
||||
ex.ctx.HideCursor()
|
||||
ex.cancel()
|
||||
default:
|
||||
if event.Rune() != 0 {
|
||||
case tcell.KeyRune:
|
||||
ex.insert(event.Rune())
|
||||
}
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue