1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
#
#
# Nim's Runtime Library
# (c) Copyright 2012 Andreas Rumpf
#
# See the file "copying.txt", included in this
# distribution, for details about the copyright.
#
## This module contains code for reading from `stdin`:idx:. On UNIX the GNU
## readline library is wrapped and set up to provide default key bindings
## (e.g. you can navigate with the arrow keys). On Windows ``system.readLine``
## is used. This suffices because Windows' console already provides the
## wanted functionality.
when defined(Windows):
proc readLineFromStdin*(prompt: string): TaintedString {.
tags: [ReadIOEffect, WriteIOEffect].} =
## Reads a line from stdin.
stdout.write(prompt)
result = readLine(stdin)
proc readLineFromStdin*(prompt: string, line: var TaintedString): bool {.
tags: [ReadIOEffect, WriteIOEffect].} =
## Reads a `line` from stdin. `line` must not be
## ``nil``! May throw an IO exception.
## A line of text may be delimited by ``CR``, ``LF`` or
## ``CRLF``. The newline character(s) are not part of the returned string.
## Returns ``false`` if the end of the file has been reached, ``true``
## otherwise. If ``false`` is returned `line` contains no new data.
stdout.write(prompt)
result = readLine(stdin, line)
else:
import readline, history
proc readLineFromStdin*(prompt: string): TaintedString {.
tags: [ReadIOEffect, WriteIOEffect].} =
var buffer = readline.readLine(prompt)
if isNil(buffer): quit(0)
result = TaintedString($buffer)
if result.string.len > 0:
add_history(buffer)
readline.free(buffer)
proc readLineFromStdin*(prompt: string, line: var TaintedString): bool {.
tags: [ReadIOEffect, WriteIOEffect].} =
var buffer = readline.readLine(prompt)
if isNil(buffer): quit(0)
line = TaintedString($buffer)
if line.string.len > 0:
add_history(buffer)
readline.free(buffer)
# XXX how to determine CTRL+D?
result = true
# initialization:
# disable auto-complete:
proc doNothing(a, b: cint): cint {.cdecl, procvar.} = discard
discard readline.bind_key('\t'.ord, doNothing)
|