89 lines
2.5 KiB
Go
89 lines
2.5 KiB
Go
/*
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Copyright © Brian Buller <brian@bullercodeworks.com>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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package helpers
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import (
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"github.com/gdamore/tcell"
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)
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func IsKeyEvent(e tcell.Event) bool {
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_, ok := e.(*tcell.EventKey)
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return ok
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}
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func IsKey(e tcell.EventKey, opts ...tcell.Key) bool {
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for i := range opts {
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if e.Key() == opts[i] {
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return true
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}
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}
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return false
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}
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func IsBS(e tcell.EventKey) bool {
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return IsKey(e, tcell.KeyBackspace, tcell.KeyBackspace2)
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}
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func KeyIsDisplayable(ev tcell.EventKey) bool {
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return KeyIsSpace(ev) || KeyIsAlphaNumeric(ev) || KeyIsSymbol(ev)
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}
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func KeyIsSpace(ev tcell.EventKey) bool {
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r := ev.Rune()
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return r == ' '
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}
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func KeyIsAlphaNumeric(ev tcell.EventKey) bool {
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return KeyIsAlpha(ev) || KeyIsNumeric(ev)
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}
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func KeyIsAlpha(ev tcell.EventKey) bool {
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r := ev.Rune()
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return (r >= 'a' && r <= 'z') || (r >= 'A' && r <= 'Z')
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}
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// KeyIsNumeric Returns whether the event is a
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// numeric Key press
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func KeyIsNumeric(ev tcell.EventKey) bool {
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r := ev.Rune()
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return (r >= '0' && r <= '9')
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}
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// KeyIsSymbol Returns whether the event is a
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// symbol Key press
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func KeyIsSymbol(ev tcell.EventKey) bool {
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symbols := []rune{
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'!', '@', '#', '$', '%', '^', '&', '*',
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'(', ')', '-', '_', '=', '+', '[', ']', '{', '}', '|',
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';', ':', '"', '\'', ',', '<', '.', '>', '/', '?', '`', '~', '\\',
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}
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k := ev.Rune()
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for i := range symbols {
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if k == symbols[i] {
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return true
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}
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}
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return false
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}
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func HasCtrl(ev *tcell.EventKey) bool { return ev.Modifiers()&tcell.ModCtrl == tcell.ModCtrl }
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