/* This file is included!
 __ __ _
 ___\ \/ /_ __ __ _| |_
 / _ \\ /| '_ \ / _` | __|
 | __// \| |_) | (_| | |_
 \___/_/\_\ .__/ \__,_|\__|
 |_| XML parser

 Copyright (c) 1997-2000 Thai Open Source Software Center Ltd
 Copyright (c) 2000-2017 Expat development team
 Licensed under the MIT license:

 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the
 "Software"), to deal in the Software without restriction, including
 without limitation the rights to use, copy, modify, merge, publish,
 distribute, sublicense, and/or sell copies of the Software, and to permit
 persons to whom the Software is furnished to do so, subject to the
 following conditions:

 The above copyright notice and this permission notice shall be included
 in all copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
 NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

#ifdef XML_TOK_NS_C

const ENCODING *
NS(XmlGetUtf8InternalEncoding)(void) {
 return &ns(internal_utf8_encoding).enc;
}

const ENCODING *
NS(XmlGetUtf16InternalEncoding)(void) {
# if BYTEORDER == 1234
 return &ns(internal_little2_encoding).enc;
# elif BYTEORDER == 4321
 return &ns(internal_big2_encoding).enc;
# else
 const short n = 1;
 return (*(const char *)&n ? &ns(internal_little2_encoding).enc
 : &ns(internal_big2_encoding).enc);
# endif
}

static const ENCODING *const NS(encodings)[] = {
 &ns(latin1_encoding).enc, &ns(ascii_encoding).enc,
 &ns(utf8_encoding).enc, &ns(big2_encoding).enc,
 &ns(big2_encoding).enc, &ns(little2_encoding).enc,
 &ns(utf8_encoding).enc /* NO_ENC */
};

static int PTRCALL
NS(initScanProlog)(const ENCODING *enc, const char *ptr, const char *end,
 const char **nextTokPtr) {
 return initScan(NS(encodings), (const INIT_ENCODING *)enc, XML_PROLOG_STATE,
 ptr, end, nextTokPtr);
}

static int PTRCALL
NS(initScanContent)(const ENCODING *enc, const char *ptr, const char *end,
 const char **nextTokPtr) {
 return initScan(NS(encodings), (const INIT_ENCODING *)enc, XML_CONTENT_STATE,
 ptr, end, nextTokPtr);
}

int
NS(XmlInitEncoding)(INIT_ENCODING *p, const ENCODING **encPtr,
 const char *name) {
 int i = getEncodingIndex(name);
 if (i == UNKNOWN_ENC)
 return 0;
 SET_INIT_ENC_INDEX(p, i);
 p->initEnc.scanners[XML_PROLOG_STATE] = NS(initScanProlog);
 p->initEnc.scanners[XML_CONTENT_STATE] = NS(initScanContent);
 p->initEnc.updatePosition = initUpdatePosition;
 p->encPtr = encPtr;
 *encPtr = &(p->initEnc);
 return 1;
}

static const ENCODING *
NS(findEncoding)(const ENCODING *enc, const char *ptr, const char *end) {
# define ENCODING_MAX 128
 char buf[ENCODING_MAX];
 char *p = buf;
 int i;
 XmlUtf8Convert(enc, &ptr, end, &p, p + ENCODING_MAX - 1);
 if (ptr != end)
 return 0;
 *p = 0;
 if (streqci(buf, KW_UTF_16) && enc->minBytesPerChar == 2)
 return enc;
 i = getEncodingIndex(buf);
 if (i == UNKNOWN_ENC)
 return 0;
 return NS(encodings)[i];
}

int
NS(XmlParseXmlDecl)(int isGeneralTextEntity, const ENCODING *enc,
 const char *ptr, const char *end, const char **badPtr,
 const char **versionPtr, const char **versionEndPtr,
 const char **encodingName, const ENCODING **encoding,
 int *standalone) {
 return doParseXmlDecl(NS(findEncoding), isGeneralTextEntity, enc, ptr, end,
 badPtr, versionPtr, versionEndPtr, encodingName,
 encoding, standalone);
}

#endif /* XML_TOK_NS_C */