48 lines
1.1 KiB
C
Executable File
48 lines
1.1 KiB
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/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */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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/*
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* Copyright (c) 1991 by Sun Microsystems, Inc.
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*/
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#pragma ident "@(#)scrwidth.c 1.3 92/01/29 SMI"
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#pragma weak scrwidth=_simple_scrwidth
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#include "synonyms.h"
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#include <stdlib.h>
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#include <ctype.h>
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#include <widec.h>
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int _simple_scrwidth(wchar_t c)
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{
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/*
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* Ideally the following statement should exist here:
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* if (!iswprint(c)) return (0);
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* but we ommitted this because that would introduce dependency
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* on libw where iswprint() is defined.
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* We simply assume all characters from supplenebtart codesets
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* are valid and printable.
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*/
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switch (c&WCHAR_CSMASK) {
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case WCHAR_CS0:
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if (c&~0xff==0 /* Invalid strange code... */ ||
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!isprint(c) /* An 8-bit but not printable char */)
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return (0);
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else
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return (1);
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case WCHAR_CS1:
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return (scrw1);
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case WCHAR_CS2:
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return (scrw2);
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case WCHAR_CS3:
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return (scrw3);
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default: /* shouldn't happen.... */
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return (0);
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}
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}
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