ncurses_cbreak

Description

bool ncurses_cbreak ( void )

警告

本函数是实验性的。本函数的行为，包括函数名称以及其它任何关于本函数的文档可能会在没有通知的情况下随 PHP 以后的发布而改变。使用本函数风险自担。

ncurses_cbreak() disables line buffering and character processing (interrupt and flow control characters are unaffected), making characters typed by the user immediately available to the program.

ncurses_cbreak() returns TRUE or NCURSES_ERR if any error occurred.

See also: ncurses_nocbreak()

add a note User Contributed Notes

php at kormoc dot com
29-Nov-2005 01:16


re satoru's post,

While it's not using cbreak, it sorta is an example. The only difference between raw and cbreak is how control keys are delt with.



Quoted from the ncurses_programming_howto:

Normally the terminal driver buffers the characters a user types until a new line or carriage return is encountered. But most programs require that the characters be available as soon as the user types them. The above two functions are used to disable line buffering. The difference between these two functions is in the way control characters like suspend (CTRL-Z), interrupt and quit (CTRL-C) are passed to the program. In the raw() mode these characters are directly passed to the program without generating a signal. In the cbreak() mode these control characters are interpreted as any other character by the terminal driver.

satoru
06-Nov-2005 03:14


<?php

 /**************************************

  [WARNING!]

  Your terminal may be uncontrollable.



  [HOW TO EXIT]

  Push space key to terminate raw mode.



  [TESTING]

  Tested with FreeBSD5.3R + PHP5.0.5-CLI.

  The option '--with-ncurses' required.

  **************************************/



  $tty = system("tty");

  $handle = fopen($tty, "r");

  if (!$handle)

    exit("cannot open $tty.\\n");



  print "Push space key to terminate.\\n";



  ncurses_init();

  ncurses_raw();

  do {

    $ch = fread($handle, 1);

    printf('[%d] ', ord($ch));

  } while ($ch != " " && ord($ch) != 3);

  ncurses_noraw();

  ncurses_end();

  print "\\n";



  fclose($handle);

?>

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