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authorIndrajith K L2022-12-03 17:00:20 +0530
committerIndrajith K L2022-12-03 17:00:20 +0530
commitf5c4671bfbad96bf346bd7e9a21fc4317b4959df (patch)
tree2764fc62da58f2ba8da7ed341643fc359873142f /v_windows/v/old/vlib/readline/readline_windows.c.v
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Adds most of the toolsHEADmaster
Diffstat (limited to 'v_windows/v/old/vlib/readline/readline_windows.c.v')
-rw-r--r--v_windows/v/old/vlib/readline/readline_windows.c.v74
1 files changed, 74 insertions, 0 deletions
diff --git a/v_windows/v/old/vlib/readline/readline_windows.c.v b/v_windows/v/old/vlib/readline/readline_windows.c.v
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+// Copyright (c) 2019-2021 Alexander Medvednikov. All rights reserved.
+// Use of this source code is governed by an MIT license
+// that can be found in the LICENSE file.
+//
+// TODO Windows version needs to be implemented.
+// Will serve as more advanced input method
+// based on the work of https://github.com/AmokHuginnsson/replxx
+//
+module readline
+
+import os
+
+// Only use standard os.get_line
+// Need implementation for readline capabilities
+//
+// read_line_utf8 blocks execution in a loop and awaits user input
+// characters from a terminal until `EOF` or `Enter` key is encountered
+// in the input stream.
+// read_line_utf8 returns the complete input line as an UTF-8 encoded `[]rune` or
+// an error if the line is empty.
+// The `prompt` `string` is output as a prefix text for the input capturing.
+// read_line_utf8 is the main method of the `readline` module and `Readline` struct.
+pub fn (mut r Readline) read_line_utf8(prompt string) ?[]rune {
+ r.current = []rune{}
+ r.cursor = 0
+ r.prompt = prompt
+ r.search_index = 0
+ if r.previous_lines.len <= 1 {
+ r.previous_lines << []rune{}
+ r.previous_lines << []rune{}
+ } else {
+ r.previous_lines[0] = []rune{}
+ }
+ print(r.prompt)
+ r.current = os.get_raw_line().runes()
+ r.previous_lines[0] = []rune{}
+ r.search_index = 0
+ if r.current.len == 0 {
+ return error('empty line')
+ }
+ return r.current
+}
+
+// read_line does the same as `read_line_utf8` but returns user input as a `string`.
+// (As opposed to `[]rune` returned by `read_line_utf8`).
+pub fn (mut r Readline) read_line(prompt string) ?string {
+ s := r.read_line_utf8(prompt) ?
+ return s.string()
+}
+
+// read_line_utf8 blocks execution in a loop and awaits user input
+// characters from a terminal until `EOF` or `Enter` key is encountered
+// in the input stream.
+// read_line_utf8 returns the complete input line as an UTF-8 encoded `[]rune` or
+// an error if the line is empty.
+// The `prompt` `string` is output as a prefix text for the input capturing.
+// read_line_utf8 is the main method of the `readline` module and `Readline` struct.
+// NOTE that this version of `read_line_utf8` is a standalone function without
+// persistent functionalities (e.g. history).
+pub fn read_line_utf8(prompt string) ?[]rune {
+ mut r := Readline{}
+ s := r.read_line_utf8(prompt) ?
+ return s
+}
+
+// read_line does the same as `read_line_utf8` but returns user input as a `string`.
+// (As opposed to `[]rune` as returned by `read_line_utf8`).
+// NOTE that this version of `read_line` is a standalone function without
+// persistent functionalities (e.g. history).
+pub fn read_line(prompt string) ?string {
+ mut r := Readline{}
+ s := r.read_line(prompt) ?
+ return s
+}