52 lines
1013 B
C
52 lines
1013 B
C
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/*++
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/* NAME
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/* printable 3
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/* SUMMARY
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/* mask non-printable characters
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/* SYNOPSIS
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/* #include <stringops.h>
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/*
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/* char *printable(buffer, replacement)
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/* char *buffer;
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/* int replacement;
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/* DESCRIPTION
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/* printable() replaces non-printable characters in its input
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/* by the given replacement.
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/*
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/* Arguments:
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/* .IP buffer
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/* The null-terminated input string.
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/* .IP replacement
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/* Replacement value for characters in \fIbuffer\fR that do not
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/* pass the isprint(3) test.
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/* LICENSE
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/* .ad
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/* .fi
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/* The Secure Mailer license must be distributed with this software.
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/* AUTHOR(S)
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/* Wietse Venema
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/* IBM T.J. Watson Research
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/* P.O. Box 704
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/* Yorktown Heights, NY 10598, USA
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/*--*/
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/* System library. */
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#include "sys_defs.h"
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#include <ctype.h>
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/* Utility library. */
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#include "stringops.h"
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char *printable(char *string, int replacement)
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{
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char *cp;
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int ch;
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for (cp = string; (ch = *(unsigned char *) cp) != 0; cp++)
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if (!ISPRINT(ch))
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*cp = replacement;
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return (string);
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}
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