?? xmltok.c
字號:
/*
Copyright (c) 1998, 1999 Thai Open Source Software Center Ltd
See the file copying.txt for copying permission.
*/
#include "xmlrpc_config.h"
#include "xmldef.h"
#include "xmltok.h"
#include "nametab.h"
#ifdef XML_DTD
#define IGNORE_SECTION_TOK_VTABLE , PREFIX(ignoreSectionTok)
#else
#define IGNORE_SECTION_TOK_VTABLE /* as nothing */
#endif
#define VTABLE1 \
{ PREFIX(prologTok), PREFIX(contentTok), \
PREFIX(cdataSectionTok) IGNORE_SECTION_TOK_VTABLE }, \
{ PREFIX(attributeValueTok), PREFIX(entityValueTok) }, \
PREFIX(sameName), \
PREFIX(nameMatchesAscii), \
PREFIX(nameLength), \
PREFIX(skipS), \
PREFIX(getAtts), \
PREFIX(charRefNumber), \
PREFIX(predefinedEntityName), \
PREFIX(updatePosition), \
PREFIX(isPublicId)
#define VTABLE VTABLE1, PREFIX(toUtf8), PREFIX(toUtf16)
#define UCS2_GET_NAMING(pages, hi, lo) \
(namingBitmap[(pages[hi] << 3) + ((lo) >> 5)] & (1 << ((lo) & 0x1F)))
/* A 2 byte UTF-8 representation splits the characters 11 bits
between the bottom 5 and 6 bits of the bytes.
We need 8 bits to index into pages, 3 bits to add to that index and
5 bits to generate the mask. */
#define UTF8_GET_NAMING2(pages, byte) \
(namingBitmap[((pages)[(((byte)[0]) >> 2) & 7] << 3) \
+ ((((byte)[0]) & 3) << 1) \
+ ((((byte)[1]) >> 5) & 1)] \
& (1 << (((byte)[1]) & 0x1F)))
/* A 3 byte UTF-8 representation splits the characters 16 bits
between the bottom 4, 6 and 6 bits of the bytes.
We need 8 bits to index into pages, 3 bits to add to that index and
5 bits to generate the mask. */
#define UTF8_GET_NAMING3(pages, byte) \
(namingBitmap[((pages)[((((byte)[0]) & 0xF) << 4) \
+ ((((byte)[1]) >> 2) & 0xF)] \
<< 3) \
+ ((((byte)[1]) & 3) << 1) \
+ ((((byte)[2]) >> 5) & 1)] \
& (1 << (((byte)[2]) & 0x1F)))
#define UTF8_GET_NAMING(pages, p, n) \
((n) == 2 \
? UTF8_GET_NAMING2(pages, (const unsigned char *)(p)) \
: ((n) == 3 \
? UTF8_GET_NAMING3(pages, (const unsigned char *)(p)) \
: 0))
#define UTF8_INVALID3(p) \
((*p) == 0xED \
? (((p)[1] & 0x20) != 0) \
: ((*p) == 0xEF \
? ((p)[1] == 0xBF && ((p)[2] == 0xBF || (p)[2] == 0xBE)) \
: 0))
#define UTF8_INVALID4(p) ((*p) == 0xF4 && ((p)[1] & 0x30) != 0)
static
int isNever(const ENCODING *enc ATTR_UNUSED, const char *p ATTR_UNUSED)
{
return 0;
}
static
int utf8_isName2(const ENCODING *enc ATTR_UNUSED, const char *p)
{
return UTF8_GET_NAMING2(namePages, (const unsigned char *)p);
}
static
int utf8_isName3(const ENCODING *enc ATTR_UNUSED, const char *p)
{
return UTF8_GET_NAMING3(namePages, (const unsigned char *)p);
}
#define utf8_isName4 isNever
static
int utf8_isNmstrt2(const ENCODING *enc ATTR_UNUSED, const char *p)
{
return UTF8_GET_NAMING2(nmstrtPages, (const unsigned char *)p);
}
static
int utf8_isNmstrt3(const ENCODING *enc ATTR_UNUSED, const char *p)
{
return UTF8_GET_NAMING3(nmstrtPages, (const unsigned char *)p);
}
#define utf8_isNmstrt4 isNever
#define utf8_isInvalid2 isNever
static
int utf8_isInvalid3(const ENCODING *enc ATTR_UNUSED, const char *p)
{
return UTF8_INVALID3((const unsigned char *)p);
}
static
int utf8_isInvalid4(const ENCODING *enc ATTR_UNUSED, const char *p)
{
return UTF8_INVALID4((const unsigned char *)p);
}
struct normal_encoding {
ENCODING enc;
unsigned char type[256];
#ifdef XML_MIN_SIZE
int (*byteType)(const ENCODING *, const char *);
int (*isNameMin)(const ENCODING *, const char *);
int (*isNmstrtMin)(const ENCODING *, const char *);
int (*byteToAscii)(const ENCODING *, const char *);
int (*charMatches)(const ENCODING *, const char *, int);
#endif /* XML_MIN_SIZE */
int (*isName2)(const ENCODING *, const char *);
int (*isName3)(const ENCODING *, const char *);
int (*isName4)(const ENCODING *, const char *);
int (*isNmstrt2)(const ENCODING *, const char *);
int (*isNmstrt3)(const ENCODING *, const char *);
int (*isNmstrt4)(const ENCODING *, const char *);
int (*isInvalid2)(const ENCODING *, const char *);
int (*isInvalid3)(const ENCODING *, const char *);
int (*isInvalid4)(const ENCODING *, const char *);
};
#ifdef XML_MIN_SIZE
#define STANDARD_VTABLE(E) \
E ## byteType, \
E ## isNameMin, \
E ## isNmstrtMin, \
E ## byteToAscii, \
E ## charMatches,
#else
#define STANDARD_VTABLE(E) /* as nothing */
#endif
#define NORMAL_VTABLE(E) \
E ## isName2, \
E ## isName3, \
E ## isName4, \
E ## isNmstrt2, \
E ## isNmstrt3, \
E ## isNmstrt4, \
E ## isInvalid2, \
E ## isInvalid3, \
E ## isInvalid4
#define NULL_NORMAL_VTABLE \
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL
static int checkCharRefNumber(int);
#include "xmltok_impl.h"
#include "ascii.h"
#ifdef XML_MIN_SIZE
#define sb_isNameMin isNever
#define sb_isNmstrtMin isNever
#endif
#ifdef XML_MIN_SIZE
#define MINBPC(enc) ((enc)->minBytesPerChar)
#else
/* minimum bytes per character */
#define MINBPC(enc) 1
#endif
#define SB_BYTE_TYPE(enc, p) \
(((struct normal_encoding *)(enc))->type[(unsigned char)*(p)])
#ifdef XML_MIN_SIZE
static
int sb_byteType(const ENCODING *enc, const char *p)
{
return SB_BYTE_TYPE(enc, p);
}
#define BYTE_TYPE(enc, p) \
(((const struct normal_encoding *)(enc))->byteType(enc, p))
#else
#define BYTE_TYPE(enc, p) SB_BYTE_TYPE(enc, p)
#endif
#ifdef XML_MIN_SIZE
#define BYTE_TO_ASCII(enc, p) \
(((const struct normal_encoding *)(enc))->byteToAscii(enc, p))
static
int sb_byteToAscii(const ENCODING *enc, const char *p)
{
return *p;
}
#else
#define BYTE_TO_ASCII(enc, p) (*(p))
#endif
#define IS_NAME_CHAR(enc, p, n) \
(((const struct normal_encoding *)(enc))->isName ## n(enc, p))
#define IS_NMSTRT_CHAR(enc, p, n) \
(((const struct normal_encoding *)(enc))->isNmstrt ## n(enc, p))
#define IS_INVALID_CHAR(enc, p, n) \
(((const struct normal_encoding *)(enc))->isInvalid ## n(enc, p))
#ifdef XML_MIN_SIZE
#define IS_NAME_CHAR_MINBPC(enc, p) \
(((const struct normal_encoding *)(enc))->isNameMin(enc, p))
#define IS_NMSTRT_CHAR_MINBPC(enc, p) \
(((const struct normal_encoding *)(enc))->isNmstrtMin(enc, p))
#else
#define IS_NAME_CHAR_MINBPC(enc, p) (0)
#define IS_NMSTRT_CHAR_MINBPC(enc, p) (0)
#endif
#ifdef XML_MIN_SIZE
#define CHAR_MATCHES(enc, p, c) \
(((const struct normal_encoding *)(enc))->charMatches(enc, p, c))
static
int sb_charMatches(const ENCODING *enc, const char *p, int c)
{
return *p == c;
}
#else
/* c is an ASCII character */
#define CHAR_MATCHES(enc, p, c) (*(p) == c)
#endif
#define PREFIX(ident) normal_ ## ident
#include "xmltok_impl.c"
#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
enum { /* UTF8_cvalN is value of masked first byte of N byte sequence */
UTF8_cval1 = 0x00,
UTF8_cval2 = 0xc0,
UTF8_cval3 = 0xe0,
UTF8_cval4 = 0xf0
};
static
void utf8_toUtf8(const ENCODING * enc ATTR_UNUSED,
const char **fromP, const char *fromLim,
char **toP, const char *toLim)
{
char *to;
const char *from;
if (fromLim - *fromP > toLim - *toP) {
/* Avoid copying partial characters. */
for (fromLim = *fromP + (toLim - *toP); fromLim > *fromP; fromLim--)
if (((unsigned char)fromLim[-1] & 0xc0) != 0x80)
break;
}
for (to = *toP, from = *fromP; from != fromLim; from++, to++)
*to = *from;
*fromP = from;
*toP = to;
}
static
void utf8_toUtf16(const ENCODING *enc,
const char **fromP, const char *fromLim,
unsigned short **toP, const unsigned short *toLim)
{
unsigned short *to = *toP;
const char *from = *fromP;
while (from != fromLim && to != toLim) {
switch (((struct normal_encoding *)enc)->type[(unsigned char)*from]) {
case BT_LEAD2:
*to++ = ((from[0] & 0x1f) << 6) | (from[1] & 0x3f);
from += 2;
break;
case BT_LEAD3:
*to++ = ((from[0] & 0xf) << 12) | ((from[1] & 0x3f) << 6) | (from[2] & 0x3f);
from += 3;
break;
case BT_LEAD4:
{
unsigned long n;
if (to + 1 == toLim)
break;
n = ((from[0] & 0x7) << 18) | ((from[1] & 0x3f) << 12) | ((from[2] & 0x3f) << 6) | (from[3] & 0x3f);
n -= 0x10000;
to[0] = (unsigned short)((n >> 10) | 0xD800);
to[1] = (unsigned short)((n & 0x3FF) | 0xDC00);
to += 2;
from += 4;
}
break;
default:
*to++ = *from++;
break;
}
}
*fromP = from;
*toP = to;
}
#ifdef XML_NS
static const struct normal_encoding utf8_encoding_ns = {
{ VTABLE1, utf8_toUtf8, utf8_toUtf16, 1, 1, 0 },
{
#include "asciitab.h"
#include "utf8tab.h"
},
STANDARD_VTABLE(sb_) NORMAL_VTABLE(utf8_)
};
#endif
static const struct normal_encoding utf8_encoding = {
{ VTABLE1, utf8_toUtf8, utf8_toUtf16, 1, 1, 0 },
{
#define BT_COLON BT_NMSTRT
#include "asciitab.h"
#undef BT_COLON
#include "utf8tab.h"
},
STANDARD_VTABLE(sb_) NORMAL_VTABLE(utf8_)
};
#ifdef XML_NS
static const struct normal_encoding internal_utf8_encoding_ns = {
{ VTABLE1, utf8_toUtf8, utf8_toUtf16, 1, 1, 0 },
{
#include "iasciitab.h"
#include "utf8tab.h"
},
STANDARD_VTABLE(sb_) NORMAL_VTABLE(utf8_)
};
#endif
static const struct normal_encoding internal_utf8_encoding = {
{ VTABLE1, utf8_toUtf8, utf8_toUtf16, 1, 1, 0 },
{
#define BT_COLON BT_NMSTRT
#include "iasciitab.h"
#undef BT_COLON
#include "utf8tab.h"
},
STANDARD_VTABLE(sb_) NORMAL_VTABLE(utf8_)
};
static
void latin1_toUtf8(const ENCODING *enc ATTR_UNUSED,
const char **fromP, const char *fromLim,
char **toP, const char *toLim)
{
for (;;) {
unsigned char c;
if (*fromP == fromLim)
break;
c = (unsigned char)**fromP;
if (c & 0x80) {
if (toLim - *toP < 2)
break;
*(*toP)++ = ((c >> 6) | UTF8_cval2);
*(*toP)++ = ((c & 0x3f) | 0x80);
(*fromP)++;
}
else {
if (*toP == toLim)
break;
*(*toP)++ = *(*fromP)++;
}
}
}
static
void latin1_toUtf16(const ENCODING *enc ATTR_UNUSED,
const char **fromP, const char *fromLim,
unsigned short **toP, const unsigned short *toLim)
{
while (*fromP != fromLim && *toP != toLim)
*(*toP)++ = (unsigned char)*(*fromP)++;
}
#ifdef XML_NS
static const struct normal_encoding latin1_encoding_ns = {
{ VTABLE1, latin1_toUtf8, latin1_toUtf16, 1, 0, 0 },
{
#include "asciitab.h"
#include "latin1tab.h"
},
STANDARD_VTABLE(sb_) NULL_NORMAL_VTABLE
};
#endif
static const struct normal_encoding latin1_encoding = {
{ VTABLE1, latin1_toUtf8, latin1_toUtf16, 1, 0, 0 },
{
#define BT_COLON BT_NMSTRT
#include "asciitab.h"
#undef BT_COLON
#include "latin1tab.h"
},
STANDARD_VTABLE(sb_) NULL_NORMAL_VTABLE
};
static
void ascii_toUtf8(const ENCODING *enc ATTR_UNUSED,
const char **fromP, const char *fromLim,
char **toP, const char *toLim)
{
while (*fromP != fromLim && *toP != toLim)
*(*toP)++ = *(*fromP)++;
}
#ifdef XML_NS
static const struct normal_encoding ascii_encoding_ns = {
{ VTABLE1, ascii_toUtf8, latin1_toUtf16, 1, 1, 0 },
{
#include "asciitab.h"
/* BT_NONXML == 0 */
},
STANDARD_VTABLE(sb_)
};
#endif
static const struct normal_encoding ascii_encoding = {
{ VTABLE1, ascii_toUtf8, latin1_toUtf16, 1, 1, 0 },
{
#define BT_COLON BT_NMSTRT
#include "asciitab.h"
#undef BT_COLON
/* BT_NONXML == 0 */
},
STANDARD_VTABLE(sb_) NULL_NORMAL_VTABLE
};
static int unicode_byte_type(char hi, char lo)
{
switch ((unsigned char)hi) {
case 0xD8: case 0xD9: case 0xDA: case 0xDB:
return BT_LEAD4;
case 0xDC: case 0xDD: case 0xDE: case 0xDF:
return BT_TRAIL;
case 0xFF:
switch ((unsigned char)lo) {
case 0xFF:
case 0xFE:
return BT_NONXML;
}
break;
}
return BT_NONASCII;
}
#define DEFINE_UTF16_TO_UTF8(E) \
static \
void E ## toUtf8(const ENCODING *enc ATTR_UNUSED, \
const char **fromP, const char *fromLim, \
char **toP, const char *toLim) \
{ \
const char *from; \
for (from = *fromP; from != fromLim; from += 2) { \
int plane; \
unsigned char lo2; \
unsigned char lo = GET_LO(from); \
unsigned char hi = GET_HI(from); \
switch (hi) { \
case 0: \
if (lo < 0x80) { \
if (*toP == toLim) { \
*fromP = from; \
return; \
} \
*(*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: \
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