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readline: allow writing without tty + small fixes

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Henrixounez 2019-09-15 03:33:31 +02:00 committed by Alexander Medvednikov
parent 1d7b9a3b0b
commit 04ff9ede9f
1 changed files with 17 additions and 7 deletions
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20
vlib/readline/readline_lin.v
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@ -42,6 +42,7 @@ mut:
prompt string
previous_lines []string
search_index int
is_tty bool
}
@ -69,7 +70,8 @@ enum Action {
// Toggle raw mode of the terminal by changing its attributes
pub fn (r mut Readline) enable_raw_mode() {
if ( C.tcgetattr(0, &r.orig_termios) == -1 ) {
panic('No tty')
r.is_tty = false
return
}
mut raw := r.orig_termios
raw.c_iflag &= ~( C.BRKINT | C.ICRNL | C.INPCK | C.ISTRIP | C.IXON )
@ -79,12 +81,14 @@ pub fn (r mut Readline) enable_raw_mode() {
raw.c_cc[C.VTIME] = 0
C.tcsetattr(0, C.TCSADRAIN, &raw)
r.is_raw = true
r.is_tty = true
}
// Not catching the SIGUSER (CTRL+C) Signal
pub fn (r Readline) enable_raw_mode2() {
pub fn (r mut Readline) enable_raw_mode2() {
if ( C.tcgetattr(0, &r.orig_termios) == -1 ) {
panic('No tty')
r.is_tty = false
return
}
mut raw := r.orig_termios
raw.c_iflag &= ~( C.BRKINT | C.ICRNL | C.INPCK | C.ISTRIP | C.IXON )
@ -93,6 +97,8 @@ pub fn (r Readline) enable_raw_mode2() {
raw.c_cc[C.VMIN] = 1
raw.c_cc[C.VTIME] = 0
C.tcsetattr(0, C.TCSADRAIN, &raw)
r.is_raw = true
r.is_tty = true
}
// Reset back the terminal to its default value
@ -224,8 +230,8 @@ fn (r mut Readline) execute(a Action, c byte) bool {
fn get_screen_columns() int {
ws := winsize{}
cols := if C.ioctl(1, C.TIOCGWINSZ, &ws) == -1 { 80 } else { ws.ws_col }
return int(cols)
cols := if C.ioctl(1, C.TIOCGWINSZ, &ws) == -1 { 80 } else { int(ws.ws_col) }
return cols
}
fn shift_cursor(xpos int, yoffset int) {
@ -299,8 +305,10 @@ fn (r mut Readline) insert_character(c byte) {
}
r.cursor++
// Refresh the line to add the new character
if r.is_tty {
r.refresh_line()
}
}
// Removes the character behind cursor.
fn (r mut Readline) delete_character() {
@ -325,7 +333,9 @@ fn (r mut Readline) suppr_character() {
fn (r mut Readline) commit_line() bool {
r.previous_lines.insert(1, r.current)
r.current = r.current + '\n'
if r.is_tty {
println('')
}
return true
}