varnish-cache/lib/libvarnish/vct.c
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/*-
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 * Copyright (c) 2006-2010 Varnish Software AS
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 * All rights reserved.
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 *
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 * Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
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 *
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 * SPDX-License-Identifier: BSD-2-Clause
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 *
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 * ctype(3) like functions, according to RFC2616
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 */
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#include "config.h"
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#include <sys/types.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include "vdef.h"
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#include "vas.h"
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#include "vct.h"
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/* NB: VCT always operate in ASCII, don't replace 0x0d with \r etc. */
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#define VCT_UPALPHA     (VCT_ALPHA | VCT_UPPER | VCT_BASE64)
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#define VCT_LOALPHA     (VCT_ALPHA | VCT_LOWER | VCT_BASE64)
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const uint16_t vct_typtab[256] = {
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        [0x00]  =       VCT_CTL,
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        [0x01]  =       VCT_CTL,
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        [0x02]  =       VCT_CTL,
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        [0x03]  =       VCT_CTL,
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        [0x04]  =       VCT_CTL,
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        [0x05]  =       VCT_CTL,
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        [0x06]  =       VCT_CTL,
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        [0x07]  =       VCT_CTL,
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        [0x08]  =       VCT_CTL,
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        [0x09]  =       VCT_CTL | VCT_OWS,
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        [0x0a]  =       VCT_CTL | VCT_CRLF,
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        [0x0b]  =       VCT_CTL | VCT_VT,
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        [0x0c]  =       VCT_CTL,
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        [0x0d]  =       VCT_CTL | VCT_CRLF,
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        [0x0e]  =       VCT_CTL,
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        [0x0f]  =       VCT_CTL,
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        [0x10]  =       VCT_CTL,
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        [0x11]  =       VCT_CTL,
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        [0x12]  =       VCT_CTL,
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        [0x13]  =       VCT_CTL,
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        [0x14]  =       VCT_CTL,
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        [0x15]  =       VCT_CTL,
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        [0x16]  =       VCT_CTL,
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        [0x17]  =       VCT_CTL,
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        [0x18]  =       VCT_CTL,
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        [0x19]  =       VCT_CTL,
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        [0x1a]  =       VCT_CTL,
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        [0x1b]  =       VCT_CTL,
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        [0x1c]  =       VCT_CTL,
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        [0x1d]  =       VCT_CTL,
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        [0x1e]  =       VCT_CTL,
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        [0x1f]  =       VCT_CTL,
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        [0x20]  =       VCT_OWS,
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        [0x21]  =       VCT_TCHAR,
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        [0x22]  =       VCT_SEPARATOR,
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        [0x23]  =       VCT_TCHAR,
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        [0x24]  =       VCT_TCHAR,
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        [0x25]  =       VCT_TCHAR,
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        [0x26]  =       VCT_TCHAR,
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        [0x27]  =       VCT_TCHAR,
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        [0x28]  =       VCT_SEPARATOR,
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        [0x29]  =       VCT_SEPARATOR,
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        [0x2a]  =       VCT_TCHAR,
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        [0x2b]  =       VCT_TCHAR | VCT_BASE64,
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        [0x2c]  =       VCT_SEPARATOR,
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        [0x2d]  =       VCT_XMLNAME | VCT_TCHAR | VCT_ID,
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        [0x2e]  =       VCT_XMLNAME | VCT_TCHAR,
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        [0x2f]  =       VCT_SEPARATOR | VCT_BASE64,
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        [0x30]  =       VCT_DIGIT | VCT_HEX | VCT_XMLNAME | VCT_BASE64,
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        [0x31]  =       VCT_DIGIT | VCT_HEX | VCT_XMLNAME | VCT_BASE64,
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        [0x32]  =       VCT_DIGIT | VCT_HEX | VCT_XMLNAME | VCT_BASE64,
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        [0x33]  =       VCT_DIGIT | VCT_HEX | VCT_XMLNAME | VCT_BASE64,
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        [0x34]  =       VCT_DIGIT | VCT_HEX | VCT_XMLNAME | VCT_BASE64,
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        [0x35]  =       VCT_DIGIT | VCT_HEX | VCT_XMLNAME | VCT_BASE64,
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        [0x36]  =       VCT_DIGIT | VCT_HEX | VCT_XMLNAME | VCT_BASE64,
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        [0x37]  =       VCT_DIGIT | VCT_HEX | VCT_XMLNAME | VCT_BASE64,
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        [0x38]  =       VCT_DIGIT | VCT_HEX | VCT_XMLNAME | VCT_BASE64,
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        [0x39]  =       VCT_DIGIT | VCT_HEX | VCT_XMLNAME | VCT_BASE64,
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        [0x3a]  =       VCT_SEPARATOR | VCT_XMLNAMESTART,
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        [0x3b]  =       VCT_SEPARATOR,
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        [0x3c]  =       VCT_SEPARATOR,
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        [0x3d]  =       VCT_SEPARATOR | VCT_BASE64,
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        [0x3e]  =       VCT_SEPARATOR,
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        [0x3f]  =       VCT_SEPARATOR,
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        [0x40]  =       VCT_SEPARATOR,
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        [0x41]  =       VCT_UPALPHA | VCT_HEX | VCT_XMLNAMESTART,
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        [0x42]  =       VCT_UPALPHA | VCT_HEX | VCT_XMLNAMESTART,
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        [0x43]  =       VCT_UPALPHA | VCT_HEX | VCT_XMLNAMESTART,
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        [0x44]  =       VCT_UPALPHA | VCT_HEX | VCT_XMLNAMESTART,
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        [0x45]  =       VCT_UPALPHA | VCT_HEX | VCT_XMLNAMESTART,
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        [0x46]  =       VCT_UPALPHA | VCT_HEX | VCT_XMLNAMESTART,
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        [0x47]  =       VCT_UPALPHA | VCT_XMLNAMESTART,
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        [0x48]  =       VCT_UPALPHA | VCT_XMLNAMESTART,
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        [0x49]  =       VCT_UPALPHA | VCT_XMLNAMESTART,
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        [0x4a]  =       VCT_UPALPHA | VCT_XMLNAMESTART,
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        [0x4b]  =       VCT_UPALPHA | VCT_XMLNAMESTART,
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        [0x4c]  =       VCT_UPALPHA | VCT_XMLNAMESTART,
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        [0x4d]  =       VCT_UPALPHA | VCT_XMLNAMESTART,
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        [0x4e]  =       VCT_UPALPHA | VCT_XMLNAMESTART,
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        [0x4f]  =       VCT_UPALPHA | VCT_XMLNAMESTART,
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        [0x50]  =       VCT_UPALPHA | VCT_XMLNAMESTART,
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        [0x51]  =       VCT_UPALPHA | VCT_XMLNAMESTART,
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        [0x52]  =       VCT_UPALPHA | VCT_XMLNAMESTART,
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        [0x53]  =       VCT_UPALPHA | VCT_XMLNAMESTART,
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        [0x54]  =       VCT_UPALPHA | VCT_XMLNAMESTART,
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        [0x55]  =       VCT_UPALPHA | VCT_XMLNAMESTART,
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        [0x56]  =       VCT_UPALPHA | VCT_XMLNAMESTART,
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        [0x57]  =       VCT_UPALPHA | VCT_XMLNAMESTART,
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        [0x58]  =       VCT_UPALPHA | VCT_XMLNAMESTART,
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        [0x59]  =       VCT_UPALPHA | VCT_XMLNAMESTART,
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        [0x5a]  =       VCT_UPALPHA | VCT_XMLNAMESTART,
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        [0x5b]  =       VCT_SEPARATOR,
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        [0x5c]  =       VCT_SEPARATOR,
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        [0x5d]  =       VCT_SEPARATOR,
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        [0x5e]  =       VCT_TCHAR,
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        [0x5f]  =       VCT_XMLNAMESTART | VCT_TCHAR | VCT_ID,
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        [0x60]  =       VCT_TCHAR,
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        [0x61]  =       VCT_LOALPHA | VCT_HEX | VCT_XMLNAMESTART,
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        [0x62]  =       VCT_LOALPHA | VCT_HEX | VCT_XMLNAMESTART,
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        [0x63]  =       VCT_LOALPHA | VCT_HEX | VCT_XMLNAMESTART,
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        [0x64]  =       VCT_LOALPHA | VCT_HEX | VCT_XMLNAMESTART,
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        [0x65]  =       VCT_LOALPHA | VCT_HEX | VCT_XMLNAMESTART,
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        [0x66]  =       VCT_LOALPHA | VCT_HEX | VCT_XMLNAMESTART,
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        [0x67]  =       VCT_LOALPHA | VCT_XMLNAMESTART,
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        [0x68]  =       VCT_LOALPHA | VCT_XMLNAMESTART,
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        [0x69]  =       VCT_LOALPHA | VCT_XMLNAMESTART,
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        [0x6a]  =       VCT_LOALPHA | VCT_XMLNAMESTART,
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        [0x6b]  =       VCT_LOALPHA | VCT_XMLNAMESTART,
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        [0x6c]  =       VCT_LOALPHA | VCT_XMLNAMESTART,
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        [0x6d]  =       VCT_LOALPHA | VCT_XMLNAMESTART,
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        [0x6e]  =       VCT_LOALPHA | VCT_XMLNAMESTART,
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        [0x6f]  =       VCT_LOALPHA | VCT_XMLNAMESTART,
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        [0x70]  =       VCT_LOALPHA | VCT_XMLNAMESTART,
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        [0x71]  =       VCT_LOALPHA | VCT_XMLNAMESTART,
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        [0x72]  =       VCT_LOALPHA | VCT_XMLNAMESTART,
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        [0x73]  =       VCT_LOALPHA | VCT_XMLNAMESTART,
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        [0x74]  =       VCT_LOALPHA | VCT_XMLNAMESTART,
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        [0x75]  =       VCT_LOALPHA | VCT_XMLNAMESTART,
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        [0x76]  =       VCT_LOALPHA | VCT_XMLNAMESTART,
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        [0x77]  =       VCT_LOALPHA | VCT_XMLNAMESTART,
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        [0x78]  =       VCT_LOALPHA | VCT_XMLNAMESTART,
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        [0x79]  =       VCT_LOALPHA | VCT_XMLNAMESTART,
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        [0x7a]  =       VCT_LOALPHA | VCT_XMLNAMESTART,
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        [0x7b]  =       VCT_SEPARATOR,
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        [0x7c]  =       VCT_TCHAR,
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        [0x7d]  =       VCT_SEPARATOR,
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        [0x7e]  =       VCT_TCHAR,
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        [0x7f]  =       VCT_CTL,
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        [0xb7]  =       VCT_XMLNAME,
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        [0xc0]  =       VCT_XMLNAMESTART,
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        [0xc1]  =       VCT_XMLNAMESTART,
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        [0xc2]  =       VCT_XMLNAMESTART,
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        [0xc3]  =       VCT_XMLNAMESTART,
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        [0xc4]  =       VCT_XMLNAMESTART,
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        [0xc5]  =       VCT_XMLNAMESTART,
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        [0xc6]  =       VCT_XMLNAMESTART,
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        [0xc7]  =       VCT_XMLNAMESTART,
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        [0xc8]  =       VCT_XMLNAMESTART,
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        [0xc9]  =       VCT_XMLNAMESTART,
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        [0xca]  =       VCT_XMLNAMESTART,
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        [0xcb]  =       VCT_XMLNAMESTART,
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        [0xcc]  =       VCT_XMLNAMESTART,
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        [0xcd]  =       VCT_XMLNAMESTART,
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        [0xce]  =       VCT_XMLNAMESTART,
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        [0xcf]  =       VCT_XMLNAMESTART,
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        [0xd0]  =       VCT_XMLNAMESTART,
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        [0xd1]  =       VCT_XMLNAMESTART,
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        [0xd2]  =       VCT_XMLNAMESTART,
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        [0xd3]  =       VCT_XMLNAMESTART,
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        [0xd4]  =       VCT_XMLNAMESTART,
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        [0xd5]  =       VCT_XMLNAMESTART,
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        [0xd6]  =       VCT_XMLNAMESTART,
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        [0xd8]  =       VCT_XMLNAMESTART,
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        [0xd9]  =       VCT_XMLNAMESTART,
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        [0xda]  =       VCT_XMLNAMESTART,
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        [0xdb]  =       VCT_XMLNAMESTART,
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        [0xdc]  =       VCT_XMLNAMESTART,
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        [0xdd]  =       VCT_XMLNAMESTART,
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        [0xde]  =       VCT_XMLNAMESTART,
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        [0xdf]  =       VCT_XMLNAMESTART,
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        [0xe0]  =       VCT_XMLNAMESTART,
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        [0xe1]  =       VCT_XMLNAMESTART,
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        [0xe2]  =       VCT_XMLNAMESTART,
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        [0xe3]  =       VCT_XMLNAMESTART,
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        [0xe4]  =       VCT_XMLNAMESTART,
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        [0xe5]  =       VCT_XMLNAMESTART,
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        [0xe6]  =       VCT_XMLNAMESTART,
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        [0xe7]  =       VCT_XMLNAMESTART,
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        [0xe8]  =       VCT_XMLNAMESTART,
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        [0xe9]  =       VCT_XMLNAMESTART,
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        [0xea]  =       VCT_XMLNAMESTART,
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        [0xeb]  =       VCT_XMLNAMESTART,
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        [0xec]  =       VCT_XMLNAMESTART,
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        [0xed]  =       VCT_XMLNAMESTART,
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        [0xee]  =       VCT_XMLNAMESTART,
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        [0xef]  =       VCT_XMLNAMESTART,
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        [0xf0]  =       VCT_XMLNAMESTART,
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        [0xf1]  =       VCT_XMLNAMESTART,
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        [0xf2]  =       VCT_XMLNAMESTART,
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        [0xf3]  =       VCT_XMLNAMESTART,
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        [0xf4]  =       VCT_XMLNAMESTART,
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        [0xf5]  =       VCT_XMLNAMESTART,
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        [0xf6]  =       VCT_XMLNAMESTART,
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        [0xf8]  =       VCT_XMLNAMESTART,
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        [0xf9]  =       VCT_XMLNAMESTART,
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        [0xfa]  =       VCT_XMLNAMESTART,
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        [0xfb]  =       VCT_XMLNAMESTART,
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        [0xfc]  =       VCT_XMLNAMESTART,
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        [0xfd]  =       VCT_XMLNAMESTART,
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        [0xfe]  =       VCT_XMLNAMESTART,
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        [0xff]  =       VCT_XMLNAMESTART,
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};
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const uint8_t vct_lowertab[256] = {
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        0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, // 0x00
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        0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, // 0x08
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        0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, // 0x10
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        0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, // 0x18
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        0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, // 0x20
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        0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, // 0x28
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        0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, // 0x30
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        0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, // 0x38
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        0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, // 0x40
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        0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, // 0x48
255
        0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, // 0x50
256
        0x78, 0x79, 0x7a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, // 0x58
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        0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, // 0x60
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        0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, // 0x68
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        0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, // 0x70
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        0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, // 0x78
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        0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, // 0x80
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        0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, // 0x88
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        0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, // 0x90
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        0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, // 0x98
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        0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, // 0xa0
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        0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, // 0xa8
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        0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, // 0xb0
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        0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, // 0xb8
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        0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, // 0xc0
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        0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, // 0xc8
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        0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, // 0xd0
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        0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, // 0xd8
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        0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, // 0xe0
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        0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, // 0xe8
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        0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, // 0xf0
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        0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, // 0xf8
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};
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const char *
280 5007300
VCT_invalid_name(const char *b, const char *e)
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{
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283 5007300
        AN(b);
284 5007300
        if (e == NULL)
285 2545400
                e = strchr(b, '\0');
286 5007300
        assert(b < e);
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288 5007300
        if (!vct_isident1(*b))
289 75
                return (b);
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291 127479300
        for (; b < e; b++)
292 122472150
                if (!vct_isident(*b))
293 75
                        return (b);
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295 5007150
        return (NULL);
296 5007300
}
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#ifdef TEST_DRIVER
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#include <ctype.h>
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#include <locale.h>
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int
304 25
main(int argc, char **argv)
305
{
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        int i;
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        const char *p;
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309 25
        (void)argc;
310 25
        (void)argv;
311
312 25
        AN(setlocale(LC_ALL, "C"));
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314 25
        p = "";
315 25
        assert(vct_iscrlf(p, p) == 0);
316
317 2400
        for (i = 0x20; i < 0x7f; i++)
318 2375
                assert(vct_lowertab[i] == tolower(i));
319
320 25
        assert(vct_casecmp("AZaz", "azAZ") == 0);
321 25
        assert(vct_casecmp("AZaz", "azAY") > 0);
322 25
        assert(vct_casecmp("AZay", "azAZ") < 0);
323 25
        assert(vct_casecmp("AZaz_", "azAZ") > 0);
324 25
        assert(vct_casecmp("AZaz", "azAZ_") < 0);
325 25
        assert(vct_casecmp("", "") == 0);
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327 25
        assert(vct_caselencmp("AZaz_", "azAZ", 4) == 0);
328 25
        assert(vct_caselencmp("AZaz", "azAZ_", 4) == 0);
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330 25
        assert(vct_caselencmp("AZaz1", "azAZ1", 4) == 0);
331 25
        assert(vct_caselencmp("AZaz1", "azAY1", 4) > 0);
332 25
        assert(vct_caselencmp("AZay1", "azAZ1", 4) < 0);
333
334 25
        assert(vct_caselencmp("AZaz", "azAZ", 5) == 0);
335 25
        assert(vct_caselencmp("AZaz ", "azAY", 5) > 0);
336 25
        assert(vct_caselencmp("AZay ", "azAZ", 5) < 0);
337
338 25
        assert(vct_caselencmp("AZaz", "azAZ1", 5) < 0);
339 25
        assert(vct_caselencmp("AZaz1", "azAZ", 5) > 0);
340
341
342 25
        assert(vct_caselencmp("A", "B", 0) == 0);
343
344 25
        return (0);
345
}
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#endif /* TEST_DRIVER */