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