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
39const ENCODING *
40NS(XmlGetUtf8InternalEncoding)(void) {
41  return &ns(internal_utf8_encoding).enc;
42}
43
44const ENCODING *
45NS(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
57static 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
64static int PTRCALL
65NS(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
71static int PTRCALL
72NS(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
78int
79NS(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
93static const ENCODING *
94NS(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
111int
112NS(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 */
123