src/expat/lib/xmltok_ns.c

   1 const ENCODING *
   2 NS(XmlGetUtf8InternalEncoding)(void)
   3 {
   4   return &ns(internal_utf8_encoding).enc;
   5 }
   6
   7 const ENCODING *
   8 NS(XmlGetUtf16InternalEncoding)(void)
   9 {
  10 #if BYTEORDER == 1234
  11   return &ns(internal_little2_encoding).enc;
  12 #elif BYTEORDER == 4321
  13   return &ns(internal_big2_encoding).enc;
  14 #else
  15   const short n = 1;
  16   return (*(const char *)&n
  17           ? &ns(internal_little2_encoding).enc
  18           : &ns(internal_big2_encoding).enc);
  19 #endif
  20 }
  21
  22 static const ENCODING *NS(encodings)[] = {
  23   &ns(latin1_encoding).enc,
  24   &ns(ascii_encoding).enc,
  25   &ns(utf8_encoding).enc,
  26   &ns(big2_encoding).enc,
  27   &ns(big2_encoding).enc,
  28   &ns(little2_encoding).enc,
  29   &ns(utf8_encoding).enc /* NO_ENC */
  30 };
  31
  32 static int PTRCALL
  33 NS(initScanProlog)(const ENCODING *enc, const char *ptr, const char *end,
  34                    const char **nextTokPtr)
  35 {
  36   return initScan(NS(encodings), (const INIT_ENCODING *)enc,
  37                   XML_PROLOG_STATE, ptr, end, nextTokPtr);
  38 }
  39
  40 static int PTRCALL
  41 NS(initScanContent)(const ENCODING *enc, const char *ptr, const char *end,
  42                     const char **nextTokPtr)
  43 {
  44   return initScan(NS(encodings), (const INIT_ENCODING *)enc,
  45                   XML_CONTENT_STATE, ptr, end, nextTokPtr);
  46 }
  47
  48 int
  49 NS(XmlInitEncoding)(INIT_ENCODING *p, const ENCODING **encPtr,
  50                     const char *name)
  51 {
  52   int i = getEncodingIndex(name);
  53   if (i == UNKNOWN_ENC)
  54     return 0;
  55   SET_INIT_ENC_INDEX(p, i);
  56   p->initEnc.scanners[XML_PROLOG_STATE] = NS(initScanProlog);
  57   p->initEnc.scanners[XML_CONTENT_STATE] = NS(initScanContent);
  58   p->initEnc.updatePosition = initUpdatePosition;
  59   p->encPtr = encPtr;
  60   *encPtr = &(p->initEnc);
  61   return 1;
  62 }
  63
  64 static const ENCODING *
  65 NS(findEncoding)(const ENCODING *enc, const char *ptr, const char *end)
  66 {
  67 #define ENCODING_MAX 128
  68   char buf[ENCODING_MAX];
  69   char *p = buf;
  70   int i;
  71   XmlUtf8Convert(enc, &ptr, end, &p, p + ENCODING_MAX - 1);
  72   if (ptr != end)
  73     return 0;
  74   *p = 0;
  75   if (streqci(buf, KW_UTF_16) && enc->minBytesPerChar == 2)
  76     return enc;
  77   i = getEncodingIndex(buf);
  78   if (i == UNKNOWN_ENC)
  79     return 0;
  80   return NS(encodings)[i];
  81 }
  82
  83 int
  84 NS(XmlParseXmlDecl)(int isGeneralTextEntity,
  85                     const ENCODING *enc,
  86                     const char *ptr,
  87                     const char *end,
  88                     const char **badPtr,
  89                     const char **versionPtr,
  90                     const char **versionEndPtr,
  91                     const char **encodingName,
  92                     const ENCODING **encoding,
  93                     int *standalone)
  94 {
  95   return doParseXmlDecl(NS(findEncoding),
  96                         isGeneralTextEntity,
  97                         enc,
  98                         ptr,
  99                         end,
 100                         badPtr,
 101                         versionPtr,
 102                         versionEndPtr,
 103                         encodingName,
 104                         encoding,
 105                         standalone);
 106 }