?? unctrl.c
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/****************************************************************//* Unctrl() routines of the PCcurses package *//* *//****************************************************************//* This version of curses is based on ncurses, a curses version *//* Originally written by Pavel Curtis at Cornell University. *//* I have made substantial changes to make it run on IBM PC's, *//* And therefore consider myself free to make it public domain. *//* Bjorn Larsson (...mcvax!enea!infovax!bl) *//****************************************************************//* 1.0: Release: 870515 *//****************************************************************//* Modified to run under the MINIX operating system by Don Cope *//* These changes are also released into the public domain. *//* 900906 *//****************************************************************/#include <curses.h>#include "curspriv.h"static char strbuf[3] = {0, 0, 0};/****************************************************************//* Unctrl() returns a char pointer to a string corresponding to *//* Argument character 'c'. *//****************************************************************/char *unctrl(c)char c;{ int ic = c; ic &= 0xff; if ((ic >= ' ') && (ic != 0x7f)) { /* normal characters */ strbuf[0] = ic; strbuf[1] = '\0'; return(strbuf); } /* if */ strbuf[0] = '^'; /* '^' prefix */ if (c == 0x7f) /* DEL */ strbuf[1] = '?'; else /* other control */ strbuf[1] = ic + '@'; return(strbuf);} /* unctrl */
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