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58 lines
1.4 KiB
V
58 lines
1.4 KiB
V
// Copyright (c) 2019-2020 Alexander Medvednikov. All rights reserved.
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// Use of this source code is governed by an MIT license
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// that can be found in the LICENSE file.
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//
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// Serves as a more advanced input method
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// based on the work of https://github.com/AmokHuginnsson/replxx
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//
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module readline
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// Termios stores the terminal options on Linux.
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struct Termios {
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mut:
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c_iflag int
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c_oflag int
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c_cflag int
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c_lflag int
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c_cc [12]int // NCCS == 12. Can't use the defined value here
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}
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// Winsize stores the screen information on Linux.
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struct Winsize {
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ws_row u16
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ws_col u16
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ws_xpixel u16
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ws_ypixel u16
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}
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// Readline is the key struct for reading and holding user input via a terminal.
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// Example: import readline { Readline }
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pub struct Readline {
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mut:
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is_raw bool
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orig_termios Termios // Linux
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current ustring // Line being edited
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cursor int // Cursor position
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overwrite bool
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cursor_row_offset int
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prompt string
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prompt_offset int
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previous_lines []ustring
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search_index int
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is_tty bool
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}
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// get_prompt_offset computes the length of the `prompt` `string` argument.
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fn get_prompt_offset(prompt string) int {
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mut len := 0
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for i := 0; i < prompt.len; i++ {
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if prompt[i] == `\e` {
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for ; i < prompt.len && prompt[i] != `m`; i++ {
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}
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} else {
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len = len + 1
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}
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}
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return prompt.len - len
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}
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