Add additional methods to *prompt.Prompt

CHANGELOG.md

@@ -5,6 +5,19 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.1.2] - 29.07.2023
+
+[Diff](https://github.com/elk-language/go-prompt/compare/v1.1.1...elk-language:go-prompt:v1.1.2)
+
+### Added
+- `func (*prompt.Prompt).DeleteBeforeCursor(count strings.GraphemeNumber) string`
+- `func (*prompt.Prompt).DeleteBeforeCursorRunes(count strings.RuneNumber) string`
+- `func (*prompt.Prompt).Delete(count strings.GraphemeNumber) string`
+- `func (*prompt.Prompt).DeleteRunes(count strings.RuneNumber) string`
+- `func (*prompt.Prompt).InsertText(text string, overwrite bool)`
+- `func (*prompt.Prompt).InsertTextMoveCursor(text string, overwrite bool)`
+- `func (*prompt.Prompt).UserInputColumns() strings.Width`
+
 ## [1.1.1] - 28.07.2023
 
 [Diff](https://github.com/elk-language/go-prompt/compare/v1.1.0...elk-language:go-prompt:v1.1.1)

buffer.go

@@ -188,7 +188,7 @@ func (b *Buffer) CursorDown(count int, columns istrings.Width, rows int) bool {
 	return b.recalculateStartLine(columns, rows)
 }
 
-// DeleteBeforeCursor delete specified number of graphemes before the cursor and returns the deleted text.
+// Deletes the specified number of graphemes before the cursor and returns the deleted text.
 func (b *Buffer) DeleteBeforeCursor(count istrings.GraphemeNumber, columns istrings.Width, rows int) string {
 	debug.Assert(count >= 0, "count should be positive")
 	if b.cursorPosition < 0 {

prompt.go

@@ -152,6 +152,12 @@ func (p *Prompt) IndentSize() int {
 	return p.renderer.indentSize
 }
 
+// Get the number of columns that are available
+// for user input.
+func (p *Prompt) UserInputColumns() istrings.Width {
+	return p.renderer.UserInputColumns()
+}
+
 // Returns the current amount of columns that the terminal can display.
 func (p *Prompt) TerminalColumns() istrings.Width {
 	return p.renderer.col
@@ -621,6 +627,36 @@ func (p *Prompt) CursorDown(count int) bool {
 	return false
 }
 
+// Deletes the specified number of graphemes before the cursor and returns the deleted text.
+func (p *Prompt) DeleteBeforeCursor(count istrings.GraphemeNumber) string {
+	return p.buffer.DeleteBeforeCursor(count, p.UserInputColumns(), p.renderer.row)
+}
+
+// Deletes the specified number of runes before the cursor and returns the deleted text.
+func (p *Prompt) DeleteBeforeCursorRunes(count istrings.RuneNumber) string {
+	return p.buffer.DeleteBeforeCursorRunes(count, p.UserInputColumns(), p.renderer.row)
+}
+
+// Deletes the specified number of graphemes and returns the deleted text.
+func (p *Prompt) Delete(count istrings.GraphemeNumber) string {
+	return p.buffer.Delete(count, p.UserInputColumns(), p.renderer.row)
+}
+
+// Deletes the specified number of runes and returns the deleted text.
+func (p *Prompt) DeleteRunes(count istrings.RuneNumber) string {
+	return p.buffer.DeleteRunes(count, p.UserInputColumns(), p.renderer.row)
+}
+
+// Insert string into the buffer without moving the cursor.
+func (p *Prompt) InsertText(text string, overwrite bool) {
+	p.buffer.InsertText(text, overwrite)
+}
+
+// Insert string into the buffer and move the cursor.
+func (p *Prompt) InsertTextMoveCursor(text string, overwrite bool) {
+	p.buffer.InsertTextMoveCursor(text, p.UserInputColumns(), p.renderer.row, overwrite)
+}
+
 func (p *Prompt) Close() {
 	if !p.skipClose {
 		debug.AssertNoError(p.reader.Close())