xmltok.c

Simple Jabber Client for Symbian Platform

        *(*toP)++ = lo; \
        break; \
      } \
      /* fall through */ \
    case 0x1: case 0x2: case 0x3: \
    case 0x4: case 0x5: case 0x6: case 0x7: \
      if (toLim -  *toP < 2) { \
        *fromP = from; \
    return; \
      } \
      *(*toP)++ = ((lo >> 6) | (hi << 2) |  UTF8_cval2); \
      *(*toP)++ = ((lo & 0x3f) | 0x80); \
      break; \
    default: \
      if (toLim -  *toP < 3)  { \
        *fromP = from; \
    return; \
      } \
      /* 16 bits divided 4, 6, 6 amongst 3 bytes */ \
      *(*toP)++ = ((hi >> 4) | UTF8_cval3); \
      *(*toP)++ = (((hi & 0xf) << 2) | (lo >> 6) | 0x80); \
      *(*toP)++ = ((lo & 0x3f) | 0x80); \
      break; \
    case 0xD8: case 0xD9: case 0xDA: case 0xDB: \
      if (toLim -  *toP < 4) { \
    *fromP = from; \
    return; \
      } \
      plane = (((hi & 0x3) << 2) | ((lo >> 6) & 0x3)) + 1; \
      *(*toP)++ = ((plane >> 2) | UTF8_cval4); \
      *(*toP)++ = (((lo >> 2) & 0xF) | ((plane & 0x3) << 4) | 0x80); \
      from += 2; \
      lo2 = GET_LO(from); \
      *(*toP)++ = (((lo & 0x3) << 4) \
               | ((GET_HI(from) & 0x3) << 2) \
           | (lo2 >> 6) \
           | 0x80); \
      *(*toP)++ = ((lo2 & 0x3f) | 0x80); \
      break; \
    } \
  } \
  *fromP = from; \
}

#define DEFINE_UTF16_TO_UTF16(E) \
static \
void E ## toUtf16(const ENCODING *enc, \
          const char **fromP, const char *fromLim, \
          unsigned short **toP, const unsigned short *toLim) \
{ \
  /* Avoid copying first half only of surrogate */ \
  if (fromLim - *fromP > ((toLim - *toP) << 1) \
      && (GET_HI(fromLim - 2) & 0xF8) == 0xD8) \
    fromLim -= 2; \
  for (; *fromP != fromLim && *toP != toLim; *fromP += 2) \
    *(*toP)++ = (GET_HI(*fromP) << 8) | GET_LO(*fromP); \
}

#define SET2(ptr, ch) \
  (((ptr)[0] = ((ch) & 0xff)), ((ptr)[1] = ((ch) >> 8)))
#define GET_LO(ptr) ((unsigned char)(ptr)[0])
#define GET_HI(ptr) ((unsigned char)(ptr)[1])

DEFINE_UTF16_TO_UTF8(little2_)
DEFINE_UTF16_TO_UTF16(little2_)

#undef SET2
#undef GET_LO
#undef GET_HI

#define SET2(ptr, ch) \
  (((ptr)[0] = ((ch) >> 8)), ((ptr)[1] = ((ch) & 0xFF)))
#define GET_LO(ptr) ((unsigned char)(ptr)[1])
#define GET_HI(ptr) ((unsigned char)(ptr)[0])

DEFINE_UTF16_TO_UTF8(big2_)
DEFINE_UTF16_TO_UTF16(big2_)

#undef SET2
#undef GET_LO
#undef GET_HI

#define LITTLE2_BYTE_TYPE(enc, p) \
 ((p)[1] == 0 \
  ? ((struct normal_encoding *)(enc))->type[(unsigned char)*(p)] \
  : unicode_byte_type((p)[1], (p)[0]))
#define LITTLE2_BYTE_TO_ASCII(enc, p) ((p)[1] == 0 ? (p)[0] : -1)
#define LITTLE2_CHAR_MATCHES(enc, p, c) ((p)[1] == 0 && (p)[0] == c)
#define LITTLE2_IS_NAME_CHAR_MINBPC(enc, p) \
  UCS2_GET_NAMING(namePages, (unsigned char)p[1], (unsigned char)p[0])
#define LITTLE2_IS_NMSTRT_CHAR_MINBPC(enc, p) \
  UCS2_GET_NAMING(nmstrtPages, (unsigned char)p[1], (unsigned char)p[0])

#ifdef XML_MIN_SIZE

static
int little2_byteType(const ENCODING *enc, const char *p)
{
    return LITTLE2_BYTE_TYPE(enc, p);
}

static
int little2_byteToAscii(const ENCODING *enc, const char *p)
{
    return LITTLE2_BYTE_TO_ASCII(enc, p);
}

static
int little2_charMatches(const ENCODING *enc, const char *p, int c)
{
    return LITTLE2_CHAR_MATCHES(enc, p, c);
}

static
int little2_isNameMin(const ENCODING *enc, const char *p)
{
    return LITTLE2_IS_NAME_CHAR_MINBPC(enc, p);
}

static
int little2_isNmstrtMin(const ENCODING *enc, const char *p)
{
    return LITTLE2_IS_NMSTRT_CHAR_MINBPC(enc, p);
}

#undef VTABLE
#define VTABLE VTABLE1, little2_toUtf8, little2_toUtf16

#else /* not XML_MIN_SIZE */

#undef PREFIX
#define PREFIX(ident) little2_ ## ident
#define MINBPC(enc) 2
/* CHAR_MATCHES is guaranteed to have MINBPC bytes available. */
#define BYTE_TYPE(enc, p) LITTLE2_BYTE_TYPE(enc, p)
#define BYTE_TO_ASCII(enc, p) LITTLE2_BYTE_TO_ASCII(enc, p) 
#define CHAR_MATCHES(enc, p, c) LITTLE2_CHAR_MATCHES(enc, p, c)
#define IS_NAME_CHAR(enc, p, n) 0
#define IS_NAME_CHAR_MINBPC(enc, p) LITTLE2_IS_NAME_CHAR_MINBPC(enc, p)
#define IS_NMSTRT_CHAR(enc, p, n) (0)
#define IS_NMSTRT_CHAR_MINBPC(enc, p) LITTLE2_IS_NMSTRT_CHAR_MINBPC(enc, p)

#include "xmltok_impl_c.h"

#undef MINBPC
#undef BYTE_TYPE
#undef BYTE_TO_ASCII
#undef CHAR_MATCHES
#undef IS_NAME_CHAR
#undef IS_NAME_CHAR_MINBPC
#undef IS_NMSTRT_CHAR
#undef IS_NMSTRT_CHAR_MINBPC
#undef IS_INVALID_CHAR

#endif /* not XML_MIN_SIZE */

#ifdef XML_NS

static const struct normal_encoding little2_encoding_ns = {
            { VTABLE, 2, 0,
#if XML_BYTE_ORDER == 12
                1
#else
0
#endif
            },
            {
#include "asciitab.h"
#include "latin1tab.h"
            },
            STANDARD_VTABLE(little2_)
        };

#endif

static const struct normal_encoding little2_encoding = {
            { VTABLE, 2, 0,
#if XML_BYTE_ORDER == 12
                1
#else
                0
#endif
            },
            {
#define BT_COLON BT_NMSTRT
#include "asciitab.h"
#undef BT_COLON
#include "latin1tab.h"
            },
            STANDARD_VTABLE(little2_)
        };

#if XML_BYTE_ORDER != 21

#ifdef XML_NS

static const struct normal_encoding internal_little2_encoding_ns = {
        { VTABLE, 2, 0, 1 },
            {
#include "iasciitab.h"
#include "latin1tab.h"
            },
            STANDARD_VTABLE(little2_)
        };

#endif

static const struct normal_encoding internal_little2_encoding = {
        { VTABLE, 2, 0, 1 },
            {
#define BT_COLON BT_NMSTRT
#include "iasciitab.h"
#undef BT_COLON
#include "latin1tab.h"
            },
            STANDARD_VTABLE(little2_)
        };

#endif


#define BIG2_BYTE_TYPE(enc, p) \
 ((p)[0] == 0 \
  ? ((struct normal_encoding *)(enc))->type[(unsigned char)(p)[1]] \
  : unicode_byte_type((p)[0], (p)[1]))
#define BIG2_BYTE_TO_ASCII(enc, p) ((p)[0] == 0 ? (p)[1] : -1)
#define BIG2_CHAR_MATCHES(enc, p, c) ((p)[0] == 0 && (p)[1] == c)
#define BIG2_IS_NAME_CHAR_MINBPC(enc, p) \
  UCS2_GET_NAMING(namePages, (unsigned char)p[0], (unsigned char)p[1])
#define BIG2_IS_NMSTRT_CHAR_MINBPC(enc, p) \
  UCS2_GET_NAMING(nmstrtPages, (unsigned char)p[0], (unsigned char)p[1])

#ifdef XML_MIN_SIZE

static
int big2_byteType(const ENCODING *enc, const char *p)
{
    return BIG2_BYTE_TYPE(enc, p);
}

static
int big2_byteToAscii(const ENCODING *enc, const char *p)
{
    return BIG2_BYTE_TO_ASCII(enc, p);
}

static
int big2_charMatches(const ENCODING *enc, const char *p, int c)
{
    return BIG2_CHAR_MATCHES(enc, p, c);
}

static
int big2_isNameMin(const ENCODING *enc, const char *p)
{
    return BIG2_IS_NAME_CHAR_MINBPC(enc, p);
}

static
int big2_isNmstrtMin(const ENCODING *enc, const char *p)
{
    return BIG2_IS_NMSTRT_CHAR_MINBPC(enc, p);
}

#undef VTABLE
#define VTABLE VTABLE1, big2_toUtf8, big2_toUtf16

#else /* not XML_MIN_SIZE */

#undef PREFIX
#define PREFIX(ident) big2_ ## ident
#define MINBPC(enc) 2
/* CHAR_MATCHES is guaranteed to have MINBPC bytes available. */
#define BYTE_TYPE(enc, p) BIG2_BYTE_TYPE(enc, p)
#define BYTE_TO_ASCII(enc, p) BIG2_BYTE_TO_ASCII(enc, p) 
#define CHAR_MATCHES(enc, p, c) BIG2_CHAR_MATCHES(enc, p, c)
#define IS_NAME_CHAR(enc, p, n) 0
#define IS_NAME_CHAR_MINBPC(enc, p) BIG2_IS_NAME_CHAR_MINBPC(enc, p)
#define IS_NMSTRT_CHAR(enc, p, n) (0)
#define IS_NMSTRT_CHAR_MINBPC(enc, p) BIG2_IS_NMSTRT_CHAR_MINBPC(enc, p)

#include "xmltok_impl_c.h"

#undef MINBPC
#undef BYTE_TYPE
#undef BYTE_TO_ASCII
#undef CHAR_MATCHES
#undef IS_NAME_CHAR
#undef IS_NAME_CHAR_MINBPC
#undef IS_NMSTRT_CHAR
#undef IS_NMSTRT_CHAR_MINBPC
#undef IS_INVALID_CHAR

#endif /* not XML_MIN_SIZE */

#ifdef XML_NS

static const struct normal_encoding big2_encoding_ns = {
            { VTABLE, 2, 0,
#if XML_BYTE_ORDER == 21
                1
#else
0
#endif
            },
            {
#include "asciitab.h"
#include "latin1tab.h"
            },
            STANDARD_VTABLE(big2_)
        };

#endif

static const struct normal_encoding big2_encoding = {
            { VTABLE, 2, 0,
#if XML_BYTE_ORDER == 21
                1
#else
                0
#endif
            },
            {
#define BT_COLON BT_NMSTRT
#include "asciitab.h"
#undef BT_COLON
#include "latin1tab.h"
            },
            STANDARD_VTABLE(big2_)
        };

#if XML_BYTE_ORDER != 12

#ifdef XML_NS

static const struct normal_encoding internal_big2_encoding_ns = {
        { VTABLE, 2, 0, 1 },
            {
#include "iasciitab.h"
#include "latin1tab.h"
            },
            STANDARD_VTABLE(big2_)
        };

#endif

static const struct normal_encoding internal_big2_encoding = {
        { VTABLE, 2, 0, 1 },
            {
#define BT_COLON BT_NMSTRT
#include "iasciitab.h"
#undef BT_COLON
#include "latin1tab.h"
            },
            STANDARD_VTABLE(big2_)
        };

#endif

#undef PREFIX

static
int streqci(const char *s1, const char *s2)
{
    for (;;) {
        char c1 = *s1++;
        char c2 = *s2++;
        if ('a' <= c1 && c1 <= 'z')
            c1 += 'A' - 'a';
        if ('a' <= c2 && c2 <= 'z')
            c2 += 'A' - 'a';
        if (c1 != c2)
            return 0;
        if (!c1)
            break;
    }
    return 1;
}

static
void initUpdatePosition(const ENCODING *enc, const char *ptr,
                        const char *end, POSITION *pos)
{
    normal_updatePosition(&utf8_encoding.enc, ptr, end, pos);
}

static
int toAscii(const ENCODING *enc, const char *ptr, const char *end)
{
    char buf[1];
    char *p = buf;
    XmlUtf8Convert(enc, &ptr, end, &p, p + 1);
    if (p == buf)
        return -1;
    else
        return buf[0];
}

static
int isSpace(int c)
{
    switch (c) {
    case 0x20:
    case 0xD:
    case 0xA:
    case 0x9:
        return 1;
    }
    return 0;
}

/* Return 1 if there's just optional white space
or there's an S followed by name=val. */
static
int parsePseudoAttribute(const ENCODING *enc,
                         const char *ptr,
                         const char *end,
                         const char **namePtr,
                         const char **valPtr,
                         const char **nextTokPtr)
{
    int c;
    char open;
    if (ptr == end) {
        *namePtr = 0;
        return 1;
    }
    if (!isSpace(toAscii(enc, ptr, end))) {
        *nextTokPtr = ptr;
        return 0;
    }
    do {
        ptr += enc->minBytesPerChar;
    } while (isSpace(toAscii(enc, ptr, end)));
    if (ptr == end) {
        *namePtr = 0;
        return 1;
    }
    *namePtr = ptr;
    for (;;) {
        c = toAscii(enc, ptr, end);
        if (c == -1) {
            *nextTokPtr = ptr;
            return 0;
        }
        if (c == '=')
            break;
        if (isSpace(c)) {
            do {
                ptr += enc->minBytesPerChar;
            } while (isSpace(c = toAscii(enc, ptr, end)));
            if (c != '=') {
                *nextTokPtr = ptr;
                return 0;
            }
            break;
        }
        ptr += enc->minBytesPerChar;
    }
    if (ptr == *namePtr) {
        *nextTokPtr = ptr;
        return 0;
    }
    ptr += enc->minBytesPerChar;
    c = toAscii(enc, ptr, end);
    while (isSpace(c)) {
        ptr += enc->minBytesPerChar;
        c = toAscii(enc, ptr, end);
    }
    if (c != '"' && c != '\'') {
        *nextTokPtr = ptr;
        return 0;
    }
    open = c;
    ptr += enc->minBytesPerChar;
    *valPtr = ptr;
    for (;; ptr += enc->minBytesPerChar) {
        c = toAscii(enc, ptr, end);
        if (c == open)
            break;
        if (!('a' <= c && c <= 'z')
                && !('A' <= c && c <= 'Z')
                && !('0' <= c && c <= '9')
                && c != '.'
                && c != '-'
                && c != '_') {
            *nextTokPtr = ptr;
            return 0;
        }
    }
    *nextTokPtr = ptr + enc->minBytesPerChar;
    return 1;
}

static
int doParseXmlDecl(const ENCODING *(*encodingFinder)(const ENCODING *,
                   const char *,
                   const char *),
                   int isGeneralTextEntity,
                   const ENCODING *enc,
                   const char *ptr,
                   const char *end,
                   const char **badPtr,
                   const char **versionPtr,
                   const char **encodingName,
                   const ENCODING **encoding,
                   int *standalone)
{
    const char *val = 0;
    const char *name = 0;