mirror of
https://github.com/go-sylixos/elvish.git
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87 lines
2.1 KiB
Go
87 lines
2.1 KiB
Go
package edit
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import (
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"github.com/elves/elvish/pkg/cli"
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"github.com/elves/elvish/pkg/cli/el/codearea"
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"github.com/elves/elvish/pkg/eval"
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"github.com/elves/elvish/pkg/eval/vals"
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"github.com/elves/elvish/pkg/eval/vars"
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)
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//elvdoc:fn insert-at-dot
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//
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// ```elvish
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// edit:insert-at-dot $text
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// ```
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//
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// Inserts the given text at the dot, moving the dot after the newly
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// inserted text.
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func insertAtDot(app cli.App, text string) {
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app.CodeArea().MutateState(func(s *codearea.State) {
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s.Buffer.InsertAtDot(text)
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})
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}
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//elvdoc:fn replace-input
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//
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// ```elvish
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// edit:replace-input $text
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// ```
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//
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// Equivalent to assigning `$text` to `$edit:current-command`.
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func replaceInput(app cli.App, text string) {
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cli.SetCodeBuffer(app, codearea.Buffer{Content: text, Dot: len(text)})
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}
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//elvdoc:var -dot
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//
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// Contains the current position of the cursor, as a byte position within
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// `$edit:current-command`.
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//elvdoc:var current-command
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//
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// Contains the content of the current input. Setting the variable will
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// cause the cursor to move to the very end, as if `edit-dot = (count
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// $edit:current-command)` has been invoked.
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//
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// This API is subject to change.
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func initStateAPI(app cli.App, ns eval.Ns) {
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ns.AddGoFns("<edit>", map[string]interface{}{
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"insert-at-dot": func(s string) { insertAtDot(app, s) },
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"replace-input": func(s string) { replaceInput(app, s) },
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})
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setDot := func(v interface{}) error {
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var dot int
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err := vals.ScanToGo(v, &dot)
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if err != nil {
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return err
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}
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app.CodeArea().MutateState(func(s *codearea.State) {
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s.Buffer.Dot = dot
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})
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return nil
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}
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getDot := func() interface{} {
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return vals.FromGo(app.CodeArea().CopyState().Buffer.Dot)
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}
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ns.Add("-dot", vars.FromSetGet(setDot, getDot))
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setCurrentCommand := func(v interface{}) error {
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var content string
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err := vals.ScanToGo(v, &content)
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if err != nil {
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return err
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}
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replaceInput(app, content)
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return nil
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}
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getCurrentCommand := func() interface{} {
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return vals.FromGo(cli.CodeBuffer(app).Content)
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}
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ns.Add("current-command", vars.FromSetGet(setCurrentCommand, getCurrentCommand))
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}
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