diff options
Diffstat (limited to 'lib/impure/rdstdin.nim')
| -rwxr-xr-x | lib/impure/rdstdin.nim | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/lib/impure/rdstdin.nim b/lib/impure/rdstdin.nim index bc523187a..5d39186ce 100755 --- a/lib/impure/rdstdin.nim +++ b/lib/impure/rdstdin.nim @@ -14,15 +14,25 @@ ## wanted functionality. when defined(Windows): - proc ReadLineFromStdin*(prompt: string): TaintedString = + proc ReadLineFromStdin*(prompt: string): TaintedString {.deprecated.} = ## Reads a line from stdin. stdout.write(prompt) result = readLine(stdin) + proc ReadLineFromStdin*(prompt: string, line: var TaintedString): bool = + ## 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 = + proc ReadLineFromStdin*(prompt: string): TaintedString {.deprecated.} = var buffer = readline.readLine(prompt) if isNil(buffer): quit(0) result = TaintedString($buffer) @@ -30,6 +40,16 @@ else: add_history(buffer) readline.free(buffer) + proc ReadLineFromStdin*(prompt: string, line: var TaintedString): bool = + var buffer = readline.readLine(prompt) + if isNil(buffer): quit(0) + line = TaintedString($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.} = nil |