1  /* This file is included!
       2                              __  __            _
       3                           ___\ \/ /_ __   __ _| |_
       4                          / _ \\  /| '_ \ / _` | __|
       5                         |  __//  \| |_) | (_| | |_
       6                          \___/_/\_\ .__/ \__,_|\__|
       7                                   |_| XML parser
       8  
       9     Copyright (c) 1997-2000 Thai Open Source Software Center Ltd
      10     Copyright (c) 2000      Clark Cooper <coopercc@users.sourceforge.net>
      11     Copyright (c) 2002      Greg Stein <gstein@users.sourceforge.net>
      12     Copyright (c) 2002      Fred L. Drake, Jr. <fdrake@users.sourceforge.net>
      13     Copyright (c) 2002-2006 Karl Waclawek <karl@waclawek.net>
      14     Copyright (c) 2017-2021 Sebastian Pipping <sebastian@pipping.org>
      15     Licensed under the MIT license:
      16  
      17     Permission is  hereby granted,  free of charge,  to any  person obtaining
      18     a  copy  of  this  software   and  associated  documentation  files  (the
      19     "Software"),  to  deal in  the  Software  without restriction,  including
      20     without  limitation the  rights  to use,  copy,  modify, merge,  publish,
      21     distribute, sublicense, and/or sell copies of the Software, and to permit
      22     persons  to whom  the Software  is  furnished to  do so,  subject to  the
      23     following conditions:
      24  
      25     The above copyright  notice and this permission notice  shall be included
      26     in all copies or substantial portions of the Software.
      27  
      28     THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
      29     EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
      30     MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
      31     NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
      32     DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
      33     OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
      34     USE OR OTHER DEALINGS IN THE SOFTWARE.
      35  */
      36  
      37  #ifdef XML_TOK_NS_C
      38  
      39  const ENCODING *
      40  NS(XmlGetUtf8InternalEncoding)(void) {
      41    return &ns(internal_utf8_encoding).enc;
      42  }
      43  
      44  const ENCODING *
      45  NS(XmlGetUtf16InternalEncoding)(void) {
      46  #  if BYTEORDER == 1234
      47    return &ns(internal_little2_encoding).enc;
      48  #  elif BYTEORDER == 4321
      49    return &ns(internal_big2_encoding).enc;
      50  #  else
      51    const short n = 1;
      52    return (*(const char *)&n ? &ns(internal_little2_encoding).enc
      53                              : &ns(internal_big2_encoding).enc);
      54  #  endif
      55  }
      56  
      57  static const ENCODING *const NS(encodings)[] = {
      58      &ns(latin1_encoding).enc, &ns(ascii_encoding).enc,
      59      &ns(utf8_encoding).enc,   &ns(big2_encoding).enc,
      60      &ns(big2_encoding).enc,   &ns(little2_encoding).enc,
      61      &ns(utf8_encoding).enc /* NO_ENC */
      62  };
      63  
      64  static int PTRCALL
      65  NS(initScanProlog)(const ENCODING *enc, const char *ptr, const char *end,
      66                     const char **nextTokPtr) {
      67    return initScan(NS(encodings), (const INIT_ENCODING *)enc, XML_PROLOG_STATE,
      68                    ptr, end, nextTokPtr);
      69  }
      70  
      71  static int PTRCALL
      72  NS(initScanContent)(const ENCODING *enc, const char *ptr, const char *end,
      73                      const char **nextTokPtr) {
      74    return initScan(NS(encodings), (const INIT_ENCODING *)enc, XML_CONTENT_STATE,
      75                    ptr, end, nextTokPtr);
      76  }
      77  
      78  int
      79  NS(XmlInitEncoding)(INIT_ENCODING *p, const ENCODING **encPtr,
      80                      const char *name) {
      81    int i = getEncodingIndex(name);
      82    if (i == UNKNOWN_ENC)
      83      return 0;
      84    SET_INIT_ENC_INDEX(p, i);
      85    p->initEnc.scanners[XML_PROLOG_STATE] = NS(initScanProlog);
      86    p->initEnc.scanners[XML_CONTENT_STATE] = NS(initScanContent);
      87    p->initEnc.updatePosition = initUpdatePosition;
      88    p->encPtr = encPtr;
      89    *encPtr = &(p->initEnc);
      90    return 1;
      91  }
      92  
      93  static const ENCODING *
      94  NS(findEncoding)(const ENCODING *enc, const char *ptr, const char *end) {
      95  #  define ENCODING_MAX 128
      96    char buf[ENCODING_MAX] = "";
      97    char *p = buf;
      98    int i;
      99    XmlUtf8Convert(enc, &ptr, end, &p, p + ENCODING_MAX - 1);
     100    if (ptr != end)
     101      return 0;
     102    *p = 0;
     103    if (streqci(buf, KW_UTF_16) && enc->minBytesPerChar == 2)
     104      return enc;
     105    i = getEncodingIndex(buf);
     106    if (i == UNKNOWN_ENC)
     107      return 0;
     108    return NS(encodings)[i];
     109  }
     110  
     111  int
     112  NS(XmlParseXmlDecl)(int isGeneralTextEntity, const ENCODING *enc,
     113                      const char *ptr, const char *end, const char **badPtr,
     114                      const char **versionPtr, const char **versionEndPtr,
     115                      const char **encodingName, const ENCODING **encoding,
     116                      int *standalone) {
     117    return doParseXmlDecl(NS(findEncoding), isGeneralTextEntity, enc, ptr, end,
     118                          badPtr, versionPtr, versionEndPtr, encodingName,
     119                          encoding, standalone);
     120  }
     121  
     122  #endif /* XML_TOK_NS_C */