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readline: added suppr key to delete characters right of cursor

pull/1820/head
Henrixounez 2019-09-02 12:14:46 +02:00 committed by Alexander Medvednikov
parent 738c90c51b
commit 33ae7520e7
1 changed files with 19 additions and 0 deletions
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19
vlib/readline/readline_lin.v
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@ -148,6 +148,7 @@ fn (r Readline) analyse_control() Action {
case `E`: return Action.history_next case `E`: return Action.history_next
case `F`: return Action.history_previous case `F`: return Action.history_previous
case `1`: return r.analyse_extended_control() case `1`: return r.analyse_extended_control()
case `3`: return r.analyse_extended_control_no_eat()
} }
} }
return Action.nothing return Action.nothing
@ -167,12 +168,21 @@ fn (r Readline) analyse_extended_control() Action {
return Action.nothing return Action.nothing
} }
fn (r Readline) analyse_extended_control_no_eat() Action {
c := r.read_char()
switch c {
case `~`: return Action.delete_right // Suppr key
}
return Action.nothing
}
fn (r mut Readline) execute(a Action, c byte) bool { fn (r mut Readline) execute(a Action, c byte) bool {
switch a { switch a {
case Action.eof: return true case Action.eof: return true
case Action.insert_character: r.insert_character(c) case Action.insert_character: r.insert_character(c)
case Action.commit_line: return r.commit_line() case Action.commit_line: return r.commit_line()
case Action.delete_left: r.delete_character() case Action.delete_left: r.delete_character()
case Action.delete_right: r.suppr_character()
case Action.move_cursor_left: r.move_cursor_left() case Action.move_cursor_left: r.move_cursor_left()
case Action.move_cursor_right: r.move_cursor_right() case Action.move_cursor_right: r.move_cursor_right()
case Action.move_cursor_begining: r.move_cursor_begining() case Action.move_cursor_begining: r.move_cursor_begining()
@ -270,6 +280,15 @@ fn (r mut Readline) delete_character() {
r.refresh_line() r.refresh_line()
} }
// Removes the character in front of cursor.
fn (r mut Readline) suppr_character() {
if r.cursor > r.current.len {
return
}
r.current = r.current.left(r.cursor) + r.current.right(r.cursor + 1)
r.refresh_line()
}
// Add a line break then stops the main loop // Add a line break then stops the main loop
fn (r mut Readline) commit_line() bool { fn (r mut Readline) commit_line() bool {
r.current = r.current + '\n' r.current = r.current + '\n'