34 lines
851 B
C
Executable File
34 lines
851 B
C
Executable File
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
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/* All Rights Reserved */
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/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */
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/* The copyright notice above does not evidence any */
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/* actual or intended publication of such source code. */
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#pragma ident "@(#)istext.c 1.4 93/08/19 SMI" /* SVr4.0 1. */
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#include "mail.h"
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/*
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* istext(line, size) - check for text characters
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*/
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int
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istext(s, size)
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register unsigned char *s;
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int size;
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{
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register unsigned char *ep;
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register c;
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for (ep = s+size; --ep >= s; ) {
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c = *ep;
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if ((!isprint(c)) && (!isspace(c)) &&
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/* Since backspace is not included in either of the */
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/* above, must do separately */
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/* Bell character is allowable control char in the text */
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(c != 010) && (c != 007)) {
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return(FALSE);
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}
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}
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return(TRUE);
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}
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