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readline: overwrite mode and eof fix

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Henrixounez 2019-09-04 20:08:41 +02:00 committed by Alexander Medvednikov
parent ec61821bf7
commit cc5470d068
1 changed files with 22 additions and 6 deletions
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28
vlib/readline/readline_lin.v
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@ -165,7 +165,8 @@ fn (r Readline) analyse_control() Action {
case `B`: return Action.history_next
case `A`: return Action.history_previous
case `1`: return r.analyse_extended_control()
case `3`: return r.analyse_extended_control_no_eat()
case `2`: return r.analyse_extended_control_no_eat(sequence)
case `3`: return r.analyse_extended_control_no_eat(sequence)
}
}
return Action.nothing
@ -185,17 +186,21 @@ fn (r Readline) analyse_extended_control() Action {
return Action.nothing
}
fn (r Readline) analyse_extended_control_no_eat() Action {
fn (r Readline) analyse_extended_control_no_eat(last_c byte) Action {
c := r.read_char()
switch c {
case `~`: return Action.delete_right // Suppr key
case `~`:
switch last_c {
case `3`: return Action.delete_right // Suppr key
case `2`: return Action.overwrite
}
}
return Action.nothing
}
fn (r mut Readline) execute(a Action, c byte) bool {
switch a {
case Action.eof: return true
case Action.eof: return r.eof()
case Action.insert_character: r.insert_character(c)
case Action.commit_line: return r.commit_line()
case Action.delete_left: r.delete_character()
@ -208,6 +213,7 @@ fn (r mut Readline) execute(a Action, c byte) bool {
case Action.move_cursor_word_right: r.move_cursor_word_right()
case Action.history_previous: r.history_previous()
case Action.history_next: r.history_next()
case Action.overwrite: r.switch_overwrite()
case Action.clear_screen: r.clear_screen()
}
return false
@ -271,16 +277,22 @@ fn (r mut Readline) refresh_line() {
r.cursor_row_offset = cursor_pos[1]
}
// End the line without a newline
fn (r mut Readline) eof() bool {
r.previous_lines.insert(1, r.current)
return true
}
fn (r mut Readline) insert_character(c byte) {
// Small ASCII, to expand
if c >= 127 {
return
}
// TODO: Add character if overwrite at end
if !r.overwrite {
if !r.overwrite || r.cursor == r.current.len {
r.current = r.current.left(r.cursor) + c.str() + r.current.right(r.cursor)
} else {
// Overwriting
r.current = r.current.left(r.cursor) + c.str() + r.current.right(r.cursor + 1)
}
r.cursor++
// Refresh the line to add the new character
@ -360,6 +372,10 @@ fn (r mut Readline) move_cursor_word_right() {
}
}
fn (r mut Readline) switch_overwrite() {
r.overwrite = !r.overwrite
}
fn (r mut Readline) clear_screen() {
term.set_cursor_position(1, 1)
term.erase_clear()