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