1673 lines
53 KiB
C
1673 lines
53 KiB
C
/*
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__ __ _
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___\ \/ /_ __ __ _| |_
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/ _ \\ /| '_ \ / _` | __|
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||
| __// \| |_) | (_| | |_
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\___/_/\_\ .__/ \__,_|\__|
|
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|_| XML parser
|
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|
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Copyright (c) 1997-2000 Thai Open Source Software Center Ltd
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Copyright (c) 2000-2017 Expat development team
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Licensed under the MIT license:
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Permission is hereby granted, free of charge, to any person obtaining
|
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a copy of this software and associated documentation files (the
|
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"Software"), to deal in the Software without restriction, including
|
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to permit
|
||
persons to whom the Software is furnished to do so, subject to the
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following conditions:
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|
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
|
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USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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|
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#ifdef _WIN32
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# include "winconfig.h"
|
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#else
|
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# ifdef HAVE_EXPAT_CONFIG_H
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# include <expat_config.h>
|
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# endif
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#endif /* ndef _WIN32 */
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|
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#include <stddef.h>
|
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#include <string.h> /* memcpy */
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|
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#if defined(_MSC_VER) && (_MSC_VER <= 1700)
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/* for vs2012/11.0/1700 and earlier Visual Studio compilers */
|
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# define bool int
|
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# define false 0
|
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# define true 1
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#else
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||
# include <stdbool.h>
|
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#endif
|
||
|
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#include "expat_external.h"
|
||
#include "internal.h"
|
||
#include "xmltok.h"
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||
#include "nametab.h"
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||
|
||
#ifdef XML_DTD
|
||
# define IGNORE_SECTION_TOK_VTABLE , PREFIX(ignoreSectionTok)
|
||
#else
|
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# define IGNORE_SECTION_TOK_VTABLE /* as nothing */
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||
#endif
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||
|
||
#define VTABLE1 \
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{PREFIX(prologTok), PREFIX(contentTok), \
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||
PREFIX(cdataSectionTok) IGNORE_SECTION_TOK_VTABLE}, \
|
||
{PREFIX(attributeValueTok), PREFIX(entityValueTok)}, \
|
||
PREFIX(nameMatchesAscii), PREFIX(nameLength), PREFIX(skipS), \
|
||
PREFIX(getAtts), PREFIX(charRefNumber), PREFIX(predefinedEntityName), \
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||
PREFIX(updatePosition), PREFIX(isPublicId)
|
||
|
||
#define VTABLE VTABLE1, PREFIX(toUtf8), PREFIX(toUtf16)
|
||
|
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#define UCS2_GET_NAMING(pages, hi, lo) \
|
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(namingBitmap[(pages[hi] << 3) + ((lo) >> 5)] & (1u << ((lo)&0x1F)))
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|
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/* A 2 byte UTF-8 representation splits the characters 11 bits between
|
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the bottom 5 and 6 bits of the bytes. We need 8 bits to index into
|
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pages, 3 bits to add to that index and 5 bits to generate the mask.
|
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*/
|
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#define UTF8_GET_NAMING2(pages, byte) \
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(namingBitmap[((pages)[(((byte)[0]) >> 2) & 7] << 3) \
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+ ((((byte)[0]) & 3) << 1) + ((((byte)[1]) >> 5) & 1)] \
|
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& (1u << (((byte)[1]) & 0x1F)))
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|
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/* A 3 byte UTF-8 representation splits the characters 16 bits between
|
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the bottom 4, 6 and 6 bits of the bytes. We need 8 bits to index
|
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into pages, 3 bits to add to that index and 5 bits to generate the
|
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mask.
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*/
|
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#define UTF8_GET_NAMING3(pages, byte) \
|
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(namingBitmap \
|
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[((pages)[((((byte)[0]) & 0xF) << 4) + ((((byte)[1]) >> 2) & 0xF)] \
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<< 3) \
|
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+ ((((byte)[1]) & 3) << 1) + ((((byte)[2]) >> 5) & 1)] \
|
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& (1u << (((byte)[2]) & 0x1F)))
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|
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#define UTF8_GET_NAMING(pages, p, n) \
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((n) == 2 \
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? UTF8_GET_NAMING2(pages, (const unsigned char *)(p)) \
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: ((n) == 3 ? UTF8_GET_NAMING3(pages, (const unsigned char *)(p)) : 0))
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|
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/* Detection of invalid UTF-8 sequences is based on Table 3.1B
|
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of Unicode 3.2: http://www.unicode.org/unicode/reports/tr28/
|
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with the additional restriction of not allowing the Unicode
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code points 0xFFFF and 0xFFFE (sequences EF,BF,BF and EF,BF,BE).
|
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Implementation details:
|
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(A & 0x80) == 0 means A < 0x80
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and
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(A & 0xC0) == 0xC0 means A > 0xBF
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*/
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#define UTF8_INVALID2(p) \
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((*p) < 0xC2 || ((p)[1] & 0x80) == 0 || ((p)[1] & 0xC0) == 0xC0)
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|
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#define UTF8_INVALID3(p) \
|
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(((p)[2] & 0x80) == 0 \
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|| ((*p) == 0xEF && (p)[1] == 0xBF ? (p)[2] > 0xBD \
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: ((p)[2] & 0xC0) == 0xC0) \
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|| ((*p) == 0xE0 \
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? (p)[1] < 0xA0 || ((p)[1] & 0xC0) == 0xC0 \
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: ((p)[1] & 0x80) == 0 \
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|| ((*p) == 0xED ? (p)[1] > 0x9F : ((p)[1] & 0xC0) == 0xC0)))
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|
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#define UTF8_INVALID4(p) \
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(((p)[3] & 0x80) == 0 || ((p)[3] & 0xC0) == 0xC0 || ((p)[2] & 0x80) == 0 \
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|| ((p)[2] & 0xC0) == 0xC0 \
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|| ((*p) == 0xF0 \
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? (p)[1] < 0x90 || ((p)[1] & 0xC0) == 0xC0 \
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: ((p)[1] & 0x80) == 0 \
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|| ((*p) == 0xF4 ? (p)[1] > 0x8F : ((p)[1] & 0xC0) == 0xC0)))
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|
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static int PTRFASTCALL
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isNever(const ENCODING *enc, const char *p) {
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UNUSED_P(enc);
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UNUSED_P(p);
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return 0;
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}
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static int PTRFASTCALL
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utf8_isName2(const ENCODING *enc, const char *p) {
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UNUSED_P(enc);
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return UTF8_GET_NAMING2(namePages, (const unsigned char *)p);
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}
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static int PTRFASTCALL
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utf8_isName3(const ENCODING *enc, const char *p) {
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UNUSED_P(enc);
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return UTF8_GET_NAMING3(namePages, (const unsigned char *)p);
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}
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#define utf8_isName4 isNever
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static int PTRFASTCALL
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utf8_isNmstrt2(const ENCODING *enc, const char *p) {
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UNUSED_P(enc);
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return UTF8_GET_NAMING2(nmstrtPages, (const unsigned char *)p);
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}
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static int PTRFASTCALL
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utf8_isNmstrt3(const ENCODING *enc, const char *p) {
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UNUSED_P(enc);
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return UTF8_GET_NAMING3(nmstrtPages, (const unsigned char *)p);
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}
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#define utf8_isNmstrt4 isNever
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static int PTRFASTCALL
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utf8_isInvalid2(const ENCODING *enc, const char *p) {
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UNUSED_P(enc);
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return UTF8_INVALID2((const unsigned char *)p);
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}
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static int PTRFASTCALL
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utf8_isInvalid3(const ENCODING *enc, const char *p) {
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UNUSED_P(enc);
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return UTF8_INVALID3((const unsigned char *)p);
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}
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||
|
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static int PTRFASTCALL
|
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utf8_isInvalid4(const ENCODING *enc, const char *p) {
|
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UNUSED_P(enc);
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return UTF8_INVALID4((const unsigned char *)p);
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}
|
||
|
||
struct normal_encoding {
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||
ENCODING enc;
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unsigned char type[256];
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#ifdef XML_MIN_SIZE
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int(PTRFASTCALL *byteType)(const ENCODING *, const char *);
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int(PTRFASTCALL *isNameMin)(const ENCODING *, const char *);
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int(PTRFASTCALL *isNmstrtMin)(const ENCODING *, const char *);
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int(PTRFASTCALL *byteToAscii)(const ENCODING *, const char *);
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int(PTRCALL *charMatches)(const ENCODING *, const char *, int);
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#endif /* XML_MIN_SIZE */
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int(PTRFASTCALL *isName2)(const ENCODING *, const char *);
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int(PTRFASTCALL *isName3)(const ENCODING *, const char *);
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int(PTRFASTCALL *isName4)(const ENCODING *, const char *);
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int(PTRFASTCALL *isNmstrt2)(const ENCODING *, const char *);
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int(PTRFASTCALL *isNmstrt3)(const ENCODING *, const char *);
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int(PTRFASTCALL *isNmstrt4)(const ENCODING *, const char *);
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int(PTRFASTCALL *isInvalid2)(const ENCODING *, const char *);
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int(PTRFASTCALL *isInvalid3)(const ENCODING *, const char *);
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int(PTRFASTCALL *isInvalid4)(const ENCODING *, const char *);
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};
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#define AS_NORMAL_ENCODING(enc) ((const struct normal_encoding *)(enc))
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#ifdef XML_MIN_SIZE
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# define STANDARD_VTABLE(E) \
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E##byteType, E##isNameMin, E##isNmstrtMin, E##byteToAscii, E##charMatches,
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#else
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# define STANDARD_VTABLE(E) /* as nothing */
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#endif
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#define NORMAL_VTABLE(E) \
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E##isName2, E##isName3, E##isName4, E##isNmstrt2, E##isNmstrt3, \
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E##isNmstrt4, E##isInvalid2, E##isInvalid3, E##isInvalid4
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#define NULL_VTABLE \
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/* isName2 */ NULL, /* isName3 */ NULL, /* isName4 */ NULL, \
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/* isNmstrt2 */ NULL, /* isNmstrt3 */ NULL, /* isNmstrt4 */ NULL, \
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/* isInvalid2 */ NULL, /* isInvalid3 */ NULL, /* isInvalid4 */ NULL
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|
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static int FASTCALL checkCharRefNumber(int);
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|
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#include "xmltok_impl.h"
|
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#include "ascii.h"
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||
|
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#ifdef XML_MIN_SIZE
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# define sb_isNameMin isNever
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# define sb_isNmstrtMin isNever
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#endif
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|
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#ifdef XML_MIN_SIZE
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# define MINBPC(enc) ((enc)->minBytesPerChar)
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#else
|
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/* minimum bytes per character */
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# define MINBPC(enc) 1
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#endif
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||
|
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#define SB_BYTE_TYPE(enc, p) \
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(((struct normal_encoding *)(enc))->type[(unsigned char)*(p)])
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|
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#ifdef XML_MIN_SIZE
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static int PTRFASTCALL
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sb_byteType(const ENCODING *enc, const char *p) {
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return SB_BYTE_TYPE(enc, p);
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}
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# define BYTE_TYPE(enc, p) (AS_NORMAL_ENCODING(enc)->byteType(enc, p))
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#else
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# define BYTE_TYPE(enc, p) SB_BYTE_TYPE(enc, p)
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#endif
|
||
|
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#ifdef XML_MIN_SIZE
|
||
# define BYTE_TO_ASCII(enc, p) (AS_NORMAL_ENCODING(enc)->byteToAscii(enc, p))
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static int PTRFASTCALL
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||
sb_byteToAscii(const ENCODING *enc, const char *p) {
|
||
UNUSED_P(enc);
|
||
return *p;
|
||
}
|
||
#else
|
||
# define BYTE_TO_ASCII(enc, p) (*(p))
|
||
#endif
|
||
|
||
#define IS_NAME_CHAR(enc, p, n) (AS_NORMAL_ENCODING(enc)->isName##n(enc, p))
|
||
#define IS_NMSTRT_CHAR(enc, p, n) (AS_NORMAL_ENCODING(enc)->isNmstrt##n(enc, p))
|
||
#define IS_INVALID_CHAR(enc, p, n) \
|
||
(AS_NORMAL_ENCODING(enc)->isInvalid##n(enc, p))
|
||
|
||
#ifdef XML_MIN_SIZE
|
||
# define IS_NAME_CHAR_MINBPC(enc, p) \
|
||
(AS_NORMAL_ENCODING(enc)->isNameMin(enc, p))
|
||
# define IS_NMSTRT_CHAR_MINBPC(enc, p) \
|
||
(AS_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) \
|
||
(AS_NORMAL_ENCODING(enc)->charMatches(enc, p, c))
|
||
static int PTRCALL
|
||
sb_charMatches(const ENCODING *enc, const char *p, int c) {
|
||
UNUSED_P(enc);
|
||
return *p == c;
|
||
}
|
||
#else
|
||
/* c is an ASCII character */
|
||
# define CHAR_MATCHES(enc, p, c) (*(p) == c)
|
||
#endif
|
||
|
||
#define PREFIX(ident) normal_##ident
|
||
#define XML_TOK_IMPL_C
|
||
#include "xmltok_impl.c"
|
||
#undef XML_TOK_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
|
||
};
|
||
|
||
void
|
||
_INTERNAL_trim_to_complete_utf8_characters(const char *from,
|
||
const char **fromLimRef) {
|
||
const char *fromLim = *fromLimRef;
|
||
size_t walked = 0;
|
||
for (; fromLim > from; fromLim--, walked++) {
|
||
const unsigned char prev = (unsigned char)fromLim[-1];
|
||
if ((prev & 0xf8u)
|
||
== 0xf0u) { /* 4-byte character, lead by 0b11110xxx byte */
|
||
if (walked + 1 >= 4) {
|
||
fromLim += 4 - 1;
|
||
break;
|
||
} else {
|
||
walked = 0;
|
||
}
|
||
} else if ((prev & 0xf0u)
|
||
== 0xe0u) { /* 3-byte character, lead by 0b1110xxxx byte */
|
||
if (walked + 1 >= 3) {
|
||
fromLim += 3 - 1;
|
||
break;
|
||
} else {
|
||
walked = 0;
|
||
}
|
||
} else if ((prev & 0xe0u)
|
||
== 0xc0u) { /* 2-byte character, lead by 0b110xxxxx byte */
|
||
if (walked + 1 >= 2) {
|
||
fromLim += 2 - 1;
|
||
break;
|
||
} else {
|
||
walked = 0;
|
||
}
|
||
} else if ((prev & 0x80u)
|
||
== 0x00u) { /* 1-byte character, matching 0b0xxxxxxx */
|
||
break;
|
||
}
|
||
}
|
||
*fromLimRef = fromLim;
|
||
}
|
||
|
||
static enum XML_Convert_Result PTRCALL
|
||
utf8_toUtf8(const ENCODING *enc, const char **fromP, const char *fromLim,
|
||
char **toP, const char *toLim) {
|
||
bool input_incomplete = false;
|
||
bool output_exhausted = false;
|
||
|
||
/* Avoid copying partial characters (due to limited space). */
|
||
const ptrdiff_t bytesAvailable = fromLim - *fromP;
|
||
const ptrdiff_t bytesStorable = toLim - *toP;
|
||
UNUSED_P(enc);
|
||
if (bytesAvailable > bytesStorable) {
|
||
fromLim = *fromP + bytesStorable;
|
||
output_exhausted = true;
|
||
}
|
||
|
||
/* Avoid copying partial characters (from incomplete input). */
|
||
{
|
||
const char *const fromLimBefore = fromLim;
|
||
_INTERNAL_trim_to_complete_utf8_characters(*fromP, &fromLim);
|
||
if (fromLim < fromLimBefore) {
|
||
input_incomplete = true;
|
||
}
|
||
}
|
||
|
||
{
|
||
const ptrdiff_t bytesToCopy = fromLim - *fromP;
|
||
memcpy(*toP, *fromP, bytesToCopy);
|
||
*fromP += bytesToCopy;
|
||
*toP += bytesToCopy;
|
||
}
|
||
|
||
if (output_exhausted) /* needs to go first */
|
||
return XML_CONVERT_OUTPUT_EXHAUSTED;
|
||
else if (input_incomplete)
|
||
return XML_CONVERT_INPUT_INCOMPLETE;
|
||
else
|
||
return XML_CONVERT_COMPLETED;
|
||
}
|
||
|
||
static enum XML_Convert_Result PTRCALL
|
||
utf8_toUtf16(const ENCODING *enc, const char **fromP, const char *fromLim,
|
||
unsigned short **toP, const unsigned short *toLim) {
|
||
enum XML_Convert_Result res = XML_CONVERT_COMPLETED;
|
||
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:
|
||
if (fromLim - from < 2) {
|
||
res = XML_CONVERT_INPUT_INCOMPLETE;
|
||
goto after;
|
||
}
|
||
*to++ = (unsigned short)(((from[0] & 0x1f) << 6) | (from[1] & 0x3f));
|
||
from += 2;
|
||
break;
|
||
case BT_LEAD3:
|
||
if (fromLim - from < 3) {
|
||
res = XML_CONVERT_INPUT_INCOMPLETE;
|
||
goto after;
|
||
}
|
||
*to++ = (unsigned short)(((from[0] & 0xf) << 12) | ((from[1] & 0x3f) << 6)
|
||
| (from[2] & 0x3f));
|
||
from += 3;
|
||
break;
|
||
case BT_LEAD4: {
|
||
unsigned long n;
|
||
if (toLim - to < 2) {
|
||
res = XML_CONVERT_OUTPUT_EXHAUSTED;
|
||
goto after;
|
||
}
|
||
if (fromLim - from < 4) {
|
||
res = XML_CONVERT_INPUT_INCOMPLETE;
|
||
goto after;
|
||
}
|
||
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;
|
||
}
|
||
}
|
||
if (from < fromLim)
|
||
res = XML_CONVERT_OUTPUT_EXHAUSTED;
|
||
after:
|
||
*fromP = from;
|
||
*toP = to;
|
||
return res;
|
||
}
|
||
|
||
#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 enum XML_Convert_Result PTRCALL
|
||
latin1_toUtf8(const ENCODING *enc, const char **fromP, const char *fromLim,
|
||
char **toP, const char *toLim) {
|
||
UNUSED_P(enc);
|
||
for (;;) {
|
||
unsigned char c;
|
||
if (*fromP == fromLim)
|
||
return XML_CONVERT_COMPLETED;
|
||
c = (unsigned char)**fromP;
|
||
if (c & 0x80) {
|
||
if (toLim - *toP < 2)
|
||
return XML_CONVERT_OUTPUT_EXHAUSTED;
|
||
*(*toP)++ = (char)((c >> 6) | UTF8_cval2);
|
||
*(*toP)++ = (char)((c & 0x3f) | 0x80);
|
||
(*fromP)++;
|
||
} else {
|
||
if (*toP == toLim)
|
||
return XML_CONVERT_OUTPUT_EXHAUSTED;
|
||
*(*toP)++ = *(*fromP)++;
|
||
}
|
||
}
|
||
}
|
||
|
||
static enum XML_Convert_Result PTRCALL
|
||
latin1_toUtf16(const ENCODING *enc, const char **fromP, const char *fromLim,
|
||
unsigned short **toP, const unsigned short *toLim) {
|
||
UNUSED_P(enc);
|
||
while (*fromP < fromLim && *toP < toLim)
|
||
*(*toP)++ = (unsigned char)*(*fromP)++;
|
||
|
||
if ((*toP == toLim) && (*fromP < fromLim))
|
||
return XML_CONVERT_OUTPUT_EXHAUSTED;
|
||
else
|
||
return XML_CONVERT_COMPLETED;
|
||
}
|
||
|
||
#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_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_VTABLE};
|
||
|
||
static enum XML_Convert_Result PTRCALL
|
||
ascii_toUtf8(const ENCODING *enc, const char **fromP, const char *fromLim,
|
||
char **toP, const char *toLim) {
|
||
UNUSED_P(enc);
|
||
while (*fromP < fromLim && *toP < toLim)
|
||
*(*toP)++ = *(*fromP)++;
|
||
|
||
if ((*toP == toLim) && (*fromP < fromLim))
|
||
return XML_CONVERT_OUTPUT_EXHAUSTED;
|
||
else
|
||
return XML_CONVERT_COMPLETED;
|
||
}
|
||
|
||
#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_) NULL_VTABLE};
|
||
|
||
#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_VTABLE};
|
||
|
||
static int PTRFASTCALL
|
||
unicode_byte_type(char hi, char lo) {
|
||
switch ((unsigned char)hi) {
|
||
/* 0xD800–0xDBFF first 16-bit code unit or high surrogate (W1) */
|
||
case 0xD8:
|
||
case 0xD9:
|
||
case 0xDA:
|
||
case 0xDB:
|
||
return BT_LEAD4;
|
||
/* 0xDC00–0xDFFF second 16-bit code unit or low surrogate (W2) */
|
||
case 0xDC:
|
||
case 0xDD:
|
||
case 0xDE:
|
||
case 0xDF:
|
||
return BT_TRAIL;
|
||
case 0xFF:
|
||
switch ((unsigned char)lo) {
|
||
case 0xFF: /* noncharacter-FFFF */
|
||
case 0xFE: /* noncharacter-FFFE */
|
||
return BT_NONXML;
|
||
}
|
||
break;
|
||
}
|
||
return BT_NONASCII;
|
||
}
|
||
|
||
#define DEFINE_UTF16_TO_UTF8(E) \
|
||
static enum XML_Convert_Result PTRCALL E##toUtf8( \
|
||
const ENCODING *enc, const char **fromP, const char *fromLim, \
|
||
char **toP, const char *toLim) { \
|
||
const char *from = *fromP; \
|
||
UNUSED_P(enc); \
|
||
fromLim = from + (((fromLim - from) >> 1) << 1); /* shrink to even */ \
|
||
for (; 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 XML_CONVERT_OUTPUT_EXHAUSTED; \
|
||
} \
|
||
*(*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 XML_CONVERT_OUTPUT_EXHAUSTED; \
|
||
} \
|
||
*(*toP)++ = ((lo >> 6) | (hi << 2) | UTF8_cval2); \
|
||
*(*toP)++ = ((lo & 0x3f) | 0x80); \
|
||
break; \
|
||
default: \
|
||
if (toLim - *toP < 3) { \
|
||
*fromP = from; \
|
||
return XML_CONVERT_OUTPUT_EXHAUSTED; \
|
||
} \
|
||
/* 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 XML_CONVERT_OUTPUT_EXHAUSTED; \
|
||
} \
|
||
if (fromLim - from < 4) { \
|
||
*fromP = from; \
|
||
return XML_CONVERT_INPUT_INCOMPLETE; \
|
||
} \
|
||
plane = (((hi & 0x3) << 2) | ((lo >> 6) & 0x3)) + 1; \
|
||
*(*toP)++ = (char)((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; \
|
||
if (from < fromLim) \
|
||
return XML_CONVERT_INPUT_INCOMPLETE; \
|
||
else \
|
||
return XML_CONVERT_COMPLETED; \
|
||
}
|
||
|
||
#define DEFINE_UTF16_TO_UTF16(E) \
|
||
static enum XML_Convert_Result PTRCALL E##toUtf16( \
|
||
const ENCODING *enc, const char **fromP, const char *fromLim, \
|
||
unsigned short **toP, const unsigned short *toLim) { \
|
||
enum XML_Convert_Result res = XML_CONVERT_COMPLETED; \
|
||
UNUSED_P(enc); \
|
||
fromLim = *fromP + (((fromLim - *fromP) >> 1) << 1); /* shrink to even */ \
|
||
/* Avoid copying first half only of surrogate */ \
|
||
if (fromLim - *fromP > ((toLim - *toP) << 1) \
|
||
&& (GET_HI(fromLim - 2) & 0xF8) == 0xD8) { \
|
||
fromLim -= 2; \
|
||
res = XML_CONVERT_INPUT_INCOMPLETE; \
|
||
} \
|
||
for (; *fromP < fromLim && *toP < toLim; *fromP += 2) \
|
||
*(*toP)++ = (GET_HI(*fromP) << 8) | GET_LO(*fromP); \
|
||
if ((*toP == toLim) && (*fromP < fromLim)) \
|
||
return XML_CONVERT_OUTPUT_EXHAUSTED; \
|
||
else \
|
||
return res; \
|
||
}
|
||
|
||
#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(p) ((p)[1] == 0 ? (p)[0] : -1)
|
||
#define LITTLE2_CHAR_MATCHES(p, c) ((p)[1] == 0 && (p)[0] == c)
|
||
#define LITTLE2_IS_NAME_CHAR_MINBPC(p) \
|
||
UCS2_GET_NAMING(namePages, (unsigned char)p[1], (unsigned char)p[0])
|
||
#define LITTLE2_IS_NMSTRT_CHAR_MINBPC(p) \
|
||
UCS2_GET_NAMING(nmstrtPages, (unsigned char)p[1], (unsigned char)p[0])
|
||
|
||
#ifdef XML_MIN_SIZE
|
||
|
||
static int PTRFASTCALL
|
||
little2_byteType(const ENCODING *enc, const char *p) {
|
||
return LITTLE2_BYTE_TYPE(enc, p);
|
||
}
|
||
|
||
static int PTRFASTCALL
|
||
little2_byteToAscii(const ENCODING *enc, const char *p) {
|
||
UNUSED_P(enc);
|
||
return LITTLE2_BYTE_TO_ASCII(p);
|
||
}
|
||
|
||
static int PTRCALL
|
||
little2_charMatches(const ENCODING *enc, const char *p, int c) {
|
||
UNUSED_P(enc);
|
||
return LITTLE2_CHAR_MATCHES(p, c);
|
||
}
|
||
|
||
static int PTRFASTCALL
|
||
little2_isNameMin(const ENCODING *enc, const char *p) {
|
||
UNUSED_P(enc);
|
||
return LITTLE2_IS_NAME_CHAR_MINBPC(p);
|
||
}
|
||
|
||
static int PTRFASTCALL
|
||
little2_isNmstrtMin(const ENCODING *enc, const char *p) {
|
||
UNUSED_P(enc);
|
||
return LITTLE2_IS_NMSTRT_CHAR_MINBPC(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(p)
|
||
# define CHAR_MATCHES(enc, p, c) LITTLE2_CHAR_MATCHES(p, c)
|
||
# define IS_NAME_CHAR(enc, p, n) 0
|
||
# define IS_NAME_CHAR_MINBPC(enc, p) LITTLE2_IS_NAME_CHAR_MINBPC(p)
|
||
# define IS_NMSTRT_CHAR(enc, p, n) (0)
|
||
# define IS_NMSTRT_CHAR_MINBPC(enc, p) LITTLE2_IS_NMSTRT_CHAR_MINBPC(p)
|
||
|
||
# define XML_TOK_IMPL_C
|
||
# include "xmltok_impl.c"
|
||
# undef XML_TOK_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
|
||
|
||
#endif /* not XML_MIN_SIZE */
|
||
|
||
#ifdef XML_NS
|
||
|
||
static const struct normal_encoding little2_encoding_ns
|
||
= {{VTABLE, 2, 0,
|
||
# if BYTEORDER == 1234
|
||
1
|
||
# else
|
||
0
|
||
# endif
|
||
},
|
||
{
|
||
# include "asciitab.h"
|
||
# include "latin1tab.h"
|
||
},
|
||
STANDARD_VTABLE(little2_) NULL_VTABLE};
|
||
|
||
#endif
|
||
|
||
static const struct normal_encoding little2_encoding
|
||
= {{VTABLE, 2, 0,
|
||
#if BYTEORDER == 1234
|
||
1
|
||
#else
|
||
0
|
||
#endif
|
||
},
|
||
{
|
||
#define BT_COLON BT_NMSTRT
|
||
#include "asciitab.h"
|
||
#undef BT_COLON
|
||
#include "latin1tab.h"
|
||
},
|
||
STANDARD_VTABLE(little2_) NULL_VTABLE};
|
||
|
||
#if BYTEORDER != 4321
|
||
|
||
# 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_) NULL_VTABLE};
|
||
|
||
# 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_) NULL_VTABLE};
|
||
|
||
#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(p) ((p)[0] == 0 ? (p)[1] : -1)
|
||
#define BIG2_CHAR_MATCHES(p, c) ((p)[0] == 0 && (p)[1] == c)
|
||
#define BIG2_IS_NAME_CHAR_MINBPC(p) \
|
||
UCS2_GET_NAMING(namePages, (unsigned char)p[0], (unsigned char)p[1])
|
||
#define BIG2_IS_NMSTRT_CHAR_MINBPC(p) \
|
||
UCS2_GET_NAMING(nmstrtPages, (unsigned char)p[0], (unsigned char)p[1])
|
||
|
||
#ifdef XML_MIN_SIZE
|
||
|
||
static int PTRFASTCALL
|
||
big2_byteType(const ENCODING *enc, const char *p) {
|
||
return BIG2_BYTE_TYPE(enc, p);
|
||
}
|
||
|
||
static int PTRFASTCALL
|
||
big2_byteToAscii(const ENCODING *enc, const char *p) {
|
||
UNUSED_P(enc);
|
||
return BIG2_BYTE_TO_ASCII(p);
|
||
}
|
||
|
||
static int PTRCALL
|
||
big2_charMatches(const ENCODING *enc, const char *p, int c) {
|
||
UNUSED_P(enc);
|
||
return BIG2_CHAR_MATCHES(p, c);
|
||
}
|
||
|
||
static int PTRFASTCALL
|
||
big2_isNameMin(const ENCODING *enc, const char *p) {
|
||
UNUSED_P(enc);
|
||
return BIG2_IS_NAME_CHAR_MINBPC(p);
|
||
}
|
||
|
||
static int PTRFASTCALL
|
||
big2_isNmstrtMin(const ENCODING *enc, const char *p) {
|
||
UNUSED_P(enc);
|
||
return BIG2_IS_NMSTRT_CHAR_MINBPC(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(p)
|
||
# define CHAR_MATCHES(enc, p, c) BIG2_CHAR_MATCHES(p, c)
|
||
# define IS_NAME_CHAR(enc, p, n) 0
|
||
# define IS_NAME_CHAR_MINBPC(enc, p) BIG2_IS_NAME_CHAR_MINBPC(p)
|
||
# define IS_NMSTRT_CHAR(enc, p, n) (0)
|
||
# define IS_NMSTRT_CHAR_MINBPC(enc, p) BIG2_IS_NMSTRT_CHAR_MINBPC(p)
|
||
|
||
# define XML_TOK_IMPL_C
|
||
# include "xmltok_impl.c"
|
||
# undef XML_TOK_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
|
||
|
||
#endif /* not XML_MIN_SIZE */
|
||
|
||
#ifdef XML_NS
|
||
|
||
static const struct normal_encoding big2_encoding_ns
|
||
= {{VTABLE, 2, 0,
|
||
# if BYTEORDER == 4321
|
||
1
|
||
# else
|
||
0
|
||
# endif
|
||
},
|
||
{
|
||
# include "asciitab.h"
|
||
# include "latin1tab.h"
|
||
},
|
||
STANDARD_VTABLE(big2_) NULL_VTABLE};
|
||
|
||
#endif
|
||
|
||
static const struct normal_encoding big2_encoding
|
||
= {{VTABLE, 2, 0,
|
||
#if BYTEORDER == 4321
|
||
1
|
||
#else
|
||
0
|
||
#endif
|
||
},
|
||
{
|
||
#define BT_COLON BT_NMSTRT
|
||
#include "asciitab.h"
|
||
#undef BT_COLON
|
||
#include "latin1tab.h"
|
||
},
|
||
STANDARD_VTABLE(big2_) NULL_VTABLE};
|
||
|
||
#if BYTEORDER != 1234
|
||
|
||
# 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_) NULL_VTABLE};
|
||
|
||
# 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_) NULL_VTABLE};
|
||
|
||
#endif
|
||
|
||
#undef PREFIX
|
||
|
||
static int FASTCALL
|
||
streqci(const char *s1, const char *s2) {
|
||
for (;;) {
|
||
char c1 = *s1++;
|
||
char c2 = *s2++;
|
||
if (ASCII_a <= c1 && c1 <= ASCII_z)
|
||
c1 += ASCII_A - ASCII_a;
|
||
if (ASCII_a <= c2 && c2 <= ASCII_z)
|
||
/* The following line will never get executed. streqci() is
|
||
* only called from two places, both of which guarantee to put
|
||
* upper-case strings into s2.
|
||
*/
|
||
c2 += ASCII_A - ASCII_a; /* LCOV_EXCL_LINE */
|
||
if (c1 != c2)
|
||
return 0;
|
||
if (! c1)
|
||
break;
|
||
}
|
||
return 1;
|
||
}
|
||
|
||
static void PTRCALL
|
||
initUpdatePosition(const ENCODING *enc, const char *ptr, const char *end,
|
||
POSITION *pos) {
|
||
UNUSED_P(enc);
|
||
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 FASTCALL
|
||
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 **nameEndPtr,
|
||
const char **valPtr, const char **nextTokPtr) {
|
||
int c;
|
||
char open;
|
||
if (ptr == end) {
|
||
*namePtr = NULL;
|
||
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 = NULL;
|
||
return 1;
|
||
}
|
||
*namePtr = ptr;
|
||
for (;;) {
|
||
c = toAscii(enc, ptr, end);
|
||
if (c == -1) {
|
||
*nextTokPtr = ptr;
|
||
return 0;
|
||
}
|
||
if (c == ASCII_EQUALS) {
|
||
*nameEndPtr = ptr;
|
||
break;
|
||
}
|
||
if (isSpace(c)) {
|
||
*nameEndPtr = ptr;
|
||
do {
|
||
ptr += enc->minBytesPerChar;
|
||
} while (isSpace(c = toAscii(enc, ptr, end)));
|
||
if (c != ASCII_EQUALS) {
|
||
*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 != ASCII_QUOT && c != ASCII_APOS) {
|
||
*nextTokPtr = ptr;
|
||
return 0;
|
||
}
|
||
open = (char)c;
|
||
ptr += enc->minBytesPerChar;
|
||
*valPtr = ptr;
|
||
for (;; ptr += enc->minBytesPerChar) {
|
||
c = toAscii(enc, ptr, end);
|
||
if (c == open)
|
||
break;
|
||
if (! (ASCII_a <= c && c <= ASCII_z) && ! (ASCII_A <= c && c <= ASCII_Z)
|
||
&& ! (ASCII_0 <= c && c <= ASCII_9) && c != ASCII_PERIOD
|
||
&& c != ASCII_MINUS && c != ASCII_UNDERSCORE) {
|
||
*nextTokPtr = ptr;
|
||
return 0;
|
||
}
|
||
}
|
||
*nextTokPtr = ptr + enc->minBytesPerChar;
|
||
return 1;
|
||
}
|
||
|
||
static const char KW_version[]
|
||
= {ASCII_v, ASCII_e, ASCII_r, ASCII_s, ASCII_i, ASCII_o, ASCII_n, '\0'};
|
||
|
||
static const char KW_encoding[] = {ASCII_e, ASCII_n, ASCII_c, ASCII_o, ASCII_d,
|
||
ASCII_i, ASCII_n, ASCII_g, '\0'};
|
||
|
||
static const char KW_standalone[]
|
||
= {ASCII_s, ASCII_t, ASCII_a, ASCII_n, ASCII_d, ASCII_a,
|
||
ASCII_l, ASCII_o, ASCII_n, ASCII_e, '\0'};
|
||
|
||
static const char KW_yes[] = {ASCII_y, ASCII_e, ASCII_s, '\0'};
|
||
|
||
static const char KW_no[] = {ASCII_n, ASCII_o, '\0'};
|
||
|
||
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 **versionEndPtr, const char **encodingName,
|
||
const ENCODING **encoding, int *standalone) {
|
||
const char *val = NULL;
|
||
const char *name = NULL;
|
||
const char *nameEnd = NULL;
|
||
ptr += 5 * enc->minBytesPerChar;
|
||
end -= 2 * enc->minBytesPerChar;
|
||
if (! parsePseudoAttribute(enc, ptr, end, &name, &nameEnd, &val, &ptr)
|
||
|| ! name) {
|
||
*badPtr = ptr;
|
||
return 0;
|
||
}
|
||
if (! XmlNameMatchesAscii(enc, name, nameEnd, KW_version)) {
|
||
if (! isGeneralTextEntity) {
|
||
*badPtr = name;
|
||
return 0;
|
||
}
|
||
} else {
|
||
if (versionPtr)
|
||
*versionPtr = val;
|
||
if (versionEndPtr)
|
||
*versionEndPtr = ptr;
|
||
if (! parsePseudoAttribute(enc, ptr, end, &name, &nameEnd, &val, &ptr)) {
|
||
*badPtr = ptr;
|
||
return 0;
|
||
}
|
||
if (! name) {
|
||
if (isGeneralTextEntity) {
|
||
/* a TextDecl must have an EncodingDecl */
|
||
*badPtr = ptr;
|
||
return 0;
|
||
}
|
||
return 1;
|
||
}
|
||
}
|
||
if (XmlNameMatchesAscii(enc, name, nameEnd, KW_encoding)) {
|
||
int c = toAscii(enc, val, end);
|
||
if (! (ASCII_a <= c && c <= ASCII_z) && ! (ASCII_A <= c && c <= ASCII_Z)) {
|
||
*badPtr = val;
|
||
return 0;
|
||
}
|
||
if (encodingName)
|
||
*encodingName = val;
|
||
if (encoding)
|
||
*encoding = encodingFinder(enc, val, ptr - enc->minBytesPerChar);
|
||
if (! parsePseudoAttribute(enc, ptr, end, &name, &nameEnd, &val, &ptr)) {
|
||
*badPtr = ptr;
|
||
return 0;
|
||
}
|
||
if (! name)
|
||
return 1;
|
||
}
|
||
if (! XmlNameMatchesAscii(enc, name, nameEnd, KW_standalone)
|
||
|| isGeneralTextEntity) {
|
||
*badPtr = name;
|
||
return 0;
|
||
}
|
||
if (XmlNameMatchesAscii(enc, val, ptr - enc->minBytesPerChar, KW_yes)) {
|
||
if (standalone)
|
||
*standalone = 1;
|
||
} else if (XmlNameMatchesAscii(enc, val, ptr - enc->minBytesPerChar, KW_no)) {
|
||
if (standalone)
|
||
*standalone = 0;
|
||
} else {
|
||
*badPtr = val;
|
||
return 0;
|
||
}
|
||
while (isSpace(toAscii(enc, ptr, end)))
|
||
ptr += enc->minBytesPerChar;
|
||
if (ptr != end) {
|
||
*badPtr = ptr;
|
||
return 0;
|
||
}
|
||
return 1;
|
||
}
|
||
|
||
static int FASTCALL
|
||
checkCharRefNumber(int result) {
|
||
switch (result >> 8) {
|
||
case 0xD8:
|
||
case 0xD9:
|
||
case 0xDA:
|
||
case 0xDB:
|
||
case 0xDC:
|
||
case 0xDD:
|
||
case 0xDE:
|
||
case 0xDF:
|
||
return -1;
|
||
case 0:
|
||
if (latin1_encoding.type[result] == BT_NONXML)
|
||
return -1;
|
||
break;
|
||
case 0xFF:
|
||
if (result == 0xFFFE || result == 0xFFFF)
|
||
return -1;
|
||
break;
|
||
}
|
||
return result;
|
||
}
|
||
|
||
int FASTCALL
|
||
XmlUtf8Encode(int c, char *buf) {
|
||
enum {
|
||
/* minN is minimum legal resulting value for N byte sequence */
|
||
min2 = 0x80,
|
||
min3 = 0x800,
|
||
min4 = 0x10000
|
||
};
|
||
|
||
if (c < 0)
|
||
return 0; /* LCOV_EXCL_LINE: this case is always eliminated beforehand */
|
||
if (c < min2) {
|
||
buf[0] = (char)(c | UTF8_cval1);
|
||
return 1;
|
||
}
|
||
if (c < min3) {
|
||
buf[0] = (char)((c >> 6) | UTF8_cval2);
|
||
buf[1] = (char)((c & 0x3f) | 0x80);
|
||
return 2;
|
||
}
|
||
if (c < min4) {
|
||
buf[0] = (char)((c >> 12) | UTF8_cval3);
|
||
buf[1] = (char)(((c >> 6) & 0x3f) | 0x80);
|
||
buf[2] = (char)((c & 0x3f) | 0x80);
|
||
return 3;
|
||
}
|
||
if (c < 0x110000) {
|
||
buf[0] = (char)((c >> 18) | UTF8_cval4);
|
||
buf[1] = (char)(((c >> 12) & 0x3f) | 0x80);
|
||
buf[2] = (char)(((c >> 6) & 0x3f) | 0x80);
|
||
buf[3] = (char)((c & 0x3f) | 0x80);
|
||
return 4;
|
||
}
|
||
return 0; /* LCOV_EXCL_LINE: this case too is eliminated before calling */
|
||
}
|
||
|
||
int FASTCALL
|
||
XmlUtf16Encode(int charNum, unsigned short *buf) {
|
||
if (charNum < 0)
|
||
return 0;
|
||
if (charNum < 0x10000) {
|
||
buf[0] = (unsigned short)charNum;
|
||
return 1;
|
||
}
|
||
if (charNum < 0x110000) {
|
||
charNum -= 0x10000;
|
||
buf[0] = (unsigned short)((charNum >> 10) + 0xD800);
|
||
buf[1] = (unsigned short)((charNum & 0x3FF) + 0xDC00);
|
||
return 2;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
struct unknown_encoding {
|
||
struct normal_encoding normal;
|
||
CONVERTER convert;
|
||
void *userData;
|
||
unsigned short utf16[256];
|
||
char utf8[256][4];
|
||
};
|
||
|
||
#define AS_UNKNOWN_ENCODING(enc) ((const struct unknown_encoding *)(enc))
|
||
|
||
int
|
||
XmlSizeOfUnknownEncoding(void) {
|
||
return sizeof(struct unknown_encoding);
|
||
}
|
||
|
||
static int PTRFASTCALL
|
||
unknown_isName(const ENCODING *enc, const char *p) {
|
||
const struct unknown_encoding *uenc = AS_UNKNOWN_ENCODING(enc);
|
||
int c = uenc->convert(uenc->userData, p);
|
||
if (c & ~0xFFFF)
|
||
return 0;
|
||
return UCS2_GET_NAMING(namePages, c >> 8, c & 0xFF);
|
||
}
|
||
|
||
static int PTRFASTCALL
|
||
unknown_isNmstrt(const ENCODING *enc, const char *p) {
|
||
const struct unknown_encoding *uenc = AS_UNKNOWN_ENCODING(enc);
|
||
int c = uenc->convert(uenc->userData, p);
|
||
if (c & ~0xFFFF)
|
||
return 0;
|
||
return UCS2_GET_NAMING(nmstrtPages, c >> 8, c & 0xFF);
|
||
}
|
||
|
||
static int PTRFASTCALL
|
||
unknown_isInvalid(const ENCODING *enc, const char *p) {
|
||
const struct unknown_encoding *uenc = AS_UNKNOWN_ENCODING(enc);
|
||
int c = uenc->convert(uenc->userData, p);
|
||
return (c & ~0xFFFF) || checkCharRefNumber(c) < 0;
|
||
}
|
||
|
||
static enum XML_Convert_Result PTRCALL
|
||
unknown_toUtf8(const ENCODING *enc, const char **fromP, const char *fromLim,
|
||
char **toP, const char *toLim) {
|
||
const struct unknown_encoding *uenc = AS_UNKNOWN_ENCODING(enc);
|
||
char buf[XML_UTF8_ENCODE_MAX];
|
||
for (;;) {
|
||
const char *utf8;
|
||
int n;
|
||
if (*fromP == fromLim)
|
||
return XML_CONVERT_COMPLETED;
|
||
utf8 = uenc->utf8[(unsigned char)**fromP];
|
||
n = *utf8++;
|
||
if (n == 0) {
|
||
int c = uenc->convert(uenc->userData, *fromP);
|
||
n = XmlUtf8Encode(c, buf);
|
||
if (n > toLim - *toP)
|
||
return XML_CONVERT_OUTPUT_EXHAUSTED;
|
||
utf8 = buf;
|
||
*fromP += (AS_NORMAL_ENCODING(enc)->type[(unsigned char)**fromP]
|
||
- (BT_LEAD2 - 2));
|
||
} else {
|
||
if (n > toLim - *toP)
|
||
return XML_CONVERT_OUTPUT_EXHAUSTED;
|
||
(*fromP)++;
|
||
}
|
||
memcpy(*toP, utf8, n);
|
||
*toP += n;
|
||
}
|
||
}
|
||
|
||
static enum XML_Convert_Result PTRCALL
|
||
unknown_toUtf16(const ENCODING *enc, const char **fromP, const char *fromLim,
|
||
unsigned short **toP, const unsigned short *toLim) {
|
||
const struct unknown_encoding *uenc = AS_UNKNOWN_ENCODING(enc);
|
||
while (*fromP < fromLim && *toP < toLim) {
|
||
unsigned short c = uenc->utf16[(unsigned char)**fromP];
|
||
if (c == 0) {
|
||
c = (unsigned short)uenc->convert(uenc->userData, *fromP);
|
||
*fromP += (AS_NORMAL_ENCODING(enc)->type[(unsigned char)**fromP]
|
||
- (BT_LEAD2 - 2));
|
||
} else
|
||
(*fromP)++;
|
||
*(*toP)++ = c;
|
||
}
|
||
|
||
if ((*toP == toLim) && (*fromP < fromLim))
|
||
return XML_CONVERT_OUTPUT_EXHAUSTED;
|
||
else
|
||
return XML_CONVERT_COMPLETED;
|
||
}
|
||
|
||
ENCODING *
|
||
XmlInitUnknownEncoding(void *mem, int *table, CONVERTER convert,
|
||
void *userData) {
|
||
int i;
|
||
struct unknown_encoding *e = (struct unknown_encoding *)mem;
|
||
memcpy(mem, &latin1_encoding, sizeof(struct normal_encoding));
|
||
for (i = 0; i < 128; i++)
|
||
if (latin1_encoding.type[i] != BT_OTHER
|
||
&& latin1_encoding.type[i] != BT_NONXML && table[i] != i)
|
||
return 0;
|
||
for (i = 0; i < 256; i++) {
|
||
int c = table[i];
|
||
if (c == -1) {
|
||
e->normal.type[i] = BT_MALFORM;
|
||
/* This shouldn't really get used. */
|
||
e->utf16[i] = 0xFFFF;
|
||
e->utf8[i][0] = 1;
|
||
e->utf8[i][1] = 0;
|
||
} else if (c < 0) {
|
||
if (c < -4)
|
||
return 0;
|
||
/* Multi-byte sequences need a converter function */
|
||
if (! convert)
|
||
return 0;
|
||
e->normal.type[i] = (unsigned char)(BT_LEAD2 - (c + 2));
|
||
e->utf8[i][0] = 0;
|
||
e->utf16[i] = 0;
|
||
} else if (c < 0x80) {
|
||
if (latin1_encoding.type[c] != BT_OTHER
|
||
&& latin1_encoding.type[c] != BT_NONXML && c != i)
|
||
return 0;
|
||
e->normal.type[i] = latin1_encoding.type[c];
|
||
e->utf8[i][0] = 1;
|
||
e->utf8[i][1] = (char)c;
|
||
e->utf16[i] = (unsigned short)(c == 0 ? 0xFFFF : c);
|
||
} else if (checkCharRefNumber(c) < 0) {
|
||
e->normal.type[i] = BT_NONXML;
|
||
/* This shouldn't really get used. */
|
||
e->utf16[i] = 0xFFFF;
|
||
e->utf8[i][0] = 1;
|
||
e->utf8[i][1] = 0;
|
||
} else {
|
||
if (c > 0xFFFF)
|
||
return 0;
|
||
if (UCS2_GET_NAMING(nmstrtPages, c >> 8, c & 0xff))
|
||
e->normal.type[i] = BT_NMSTRT;
|
||
else if (UCS2_GET_NAMING(namePages, c >> 8, c & 0xff))
|
||
e->normal.type[i] = BT_NAME;
|
||
else
|
||
e->normal.type[i] = BT_OTHER;
|
||
e->utf8[i][0] = (char)XmlUtf8Encode(c, e->utf8[i] + 1);
|
||
e->utf16[i] = (unsigned short)c;
|
||
}
|
||
}
|
||
e->userData = userData;
|
||
e->convert = convert;
|
||
if (convert) {
|
||
e->normal.isName2 = unknown_isName;
|
||
e->normal.isName3 = unknown_isName;
|
||
e->normal.isName4 = unknown_isName;
|
||
e->normal.isNmstrt2 = unknown_isNmstrt;
|
||
e->normal.isNmstrt3 = unknown_isNmstrt;
|
||
e->normal.isNmstrt4 = unknown_isNmstrt;
|
||
e->normal.isInvalid2 = unknown_isInvalid;
|
||
e->normal.isInvalid3 = unknown_isInvalid;
|
||
e->normal.isInvalid4 = unknown_isInvalid;
|
||
}
|
||
e->normal.enc.utf8Convert = unknown_toUtf8;
|
||
e->normal.enc.utf16Convert = unknown_toUtf16;
|
||
return &(e->normal.enc);
|
||
}
|
||
|
||
/* If this enumeration is changed, getEncodingIndex and encodings
|
||
must also be changed. */
|
||
enum {
|
||
UNKNOWN_ENC = -1,
|
||
ISO_8859_1_ENC = 0,
|
||
US_ASCII_ENC,
|
||
UTF_8_ENC,
|
||
UTF_16_ENC,
|
||
UTF_16BE_ENC,
|
||
UTF_16LE_ENC,
|
||
/* must match encodingNames up to here */
|
||
NO_ENC
|
||
};
|
||
|
||
static const char KW_ISO_8859_1[]
|
||
= {ASCII_I, ASCII_S, ASCII_O, ASCII_MINUS, ASCII_8, ASCII_8,
|
||
ASCII_5, ASCII_9, ASCII_MINUS, ASCII_1, '\0'};
|
||
static const char KW_US_ASCII[]
|
||
= {ASCII_U, ASCII_S, ASCII_MINUS, ASCII_A, ASCII_S,
|
||
ASCII_C, ASCII_I, ASCII_I, '\0'};
|
||
static const char KW_UTF_8[]
|
||
= {ASCII_U, ASCII_T, ASCII_F, ASCII_MINUS, ASCII_8, '\0'};
|
||
static const char KW_UTF_16[]
|
||
= {ASCII_U, ASCII_T, ASCII_F, ASCII_MINUS, ASCII_1, ASCII_6, '\0'};
|
||
static const char KW_UTF_16BE[]
|
||
= {ASCII_U, ASCII_T, ASCII_F, ASCII_MINUS, ASCII_1,
|
||
ASCII_6, ASCII_B, ASCII_E, '\0'};
|
||
static const char KW_UTF_16LE[]
|
||
= {ASCII_U, ASCII_T, ASCII_F, ASCII_MINUS, ASCII_1,
|
||
ASCII_6, ASCII_L, ASCII_E, '\0'};
|
||
|
||
static int FASTCALL
|
||
getEncodingIndex(const char *name) {
|
||
static const char *const encodingNames[] = {
|
||
KW_ISO_8859_1, KW_US_ASCII, KW_UTF_8, KW_UTF_16, KW_UTF_16BE, KW_UTF_16LE,
|
||
};
|
||
int i;
|
||
if (name == NULL)
|
||
return NO_ENC;
|
||
for (i = 0; i < (int)(sizeof(encodingNames) / sizeof(encodingNames[0])); i++)
|
||
if (streqci(name, encodingNames[i]))
|
||
return i;
|
||
return UNKNOWN_ENC;
|
||
}
|
||
|
||
/* For binary compatibility, we store the index of the encoding
|
||
specified at initialization in the isUtf16 member.
|
||
*/
|
||
|
||
#define INIT_ENC_INDEX(enc) ((int)(enc)->initEnc.isUtf16)
|
||
#define SET_INIT_ENC_INDEX(enc, i) ((enc)->initEnc.isUtf16 = (char)i)
|
||
|
||
/* This is what detects the encoding. encodingTable maps from
|
||
encoding indices to encodings; INIT_ENC_INDEX(enc) is the index of
|
||
the external (protocol) specified encoding; state is
|
||
XML_CONTENT_STATE if we're parsing an external text entity, and
|
||
XML_PROLOG_STATE otherwise.
|
||
*/
|
||
|
||
static int
|
||
initScan(const ENCODING *const *encodingTable, const INIT_ENCODING *enc,
|
||
int state, const char *ptr, const char *end, const char **nextTokPtr) {
|
||
const ENCODING **encPtr;
|
||
|
||
if (ptr >= end)
|
||
return XML_TOK_NONE;
|
||
encPtr = enc->encPtr;
|
||
if (ptr + 1 == end) {
|
||
/* only a single byte available for auto-detection */
|
||
#ifndef XML_DTD /* FIXME */
|
||
/* a well-formed document entity must have more than one byte */
|
||
if (state != XML_CONTENT_STATE)
|
||
return XML_TOK_PARTIAL;
|
||
#endif
|
||
/* so we're parsing an external text entity... */
|
||
/* if UTF-16 was externally specified, then we need at least 2 bytes */
|
||
switch (INIT_ENC_INDEX(enc)) {
|
||
case UTF_16_ENC:
|
||
case UTF_16LE_ENC:
|
||
case UTF_16BE_ENC:
|
||
return XML_TOK_PARTIAL;
|
||
}
|
||
switch ((unsigned char)*ptr) {
|
||
case 0xFE:
|
||
case 0xFF:
|
||
case 0xEF: /* possibly first byte of UTF-8 BOM */
|
||
if (INIT_ENC_INDEX(enc) == ISO_8859_1_ENC && state == XML_CONTENT_STATE)
|
||
break;
|
||
/* fall through */
|
||
case 0x00:
|
||
case 0x3C:
|
||
return XML_TOK_PARTIAL;
|
||
}
|
||
} else {
|
||
switch (((unsigned char)ptr[0] << 8) | (unsigned char)ptr[1]) {
|
||
case 0xFEFF:
|
||
if (INIT_ENC_INDEX(enc) == ISO_8859_1_ENC && state == XML_CONTENT_STATE)
|
||
break;
|
||
*nextTokPtr = ptr + 2;
|
||
*encPtr = encodingTable[UTF_16BE_ENC];
|
||
return XML_TOK_BOM;
|
||
/* 00 3C is handled in the default case */
|
||
case 0x3C00:
|
||
if ((INIT_ENC_INDEX(enc) == UTF_16BE_ENC
|
||
|| INIT_ENC_INDEX(enc) == UTF_16_ENC)
|
||
&& state == XML_CONTENT_STATE)
|
||
break;
|
||
*encPtr = encodingTable[UTF_16LE_ENC];
|
||
return XmlTok(*encPtr, state, ptr, end, nextTokPtr);
|
||
case 0xFFFE:
|
||
if (INIT_ENC_INDEX(enc) == ISO_8859_1_ENC && state == XML_CONTENT_STATE)
|
||
break;
|
||
*nextTokPtr = ptr + 2;
|
||
*encPtr = encodingTable[UTF_16LE_ENC];
|
||
return XML_TOK_BOM;
|
||
case 0xEFBB:
|
||
/* Maybe a UTF-8 BOM (EF BB BF) */
|
||
/* If there's an explicitly specified (external) encoding
|
||
of ISO-8859-1 or some flavour of UTF-16
|
||
and this is an external text entity,
|
||
don't look for the BOM,
|
||
because it might be a legal data.
|
||
*/
|
||
if (state == XML_CONTENT_STATE) {
|
||
int e = INIT_ENC_INDEX(enc);
|
||
if (e == ISO_8859_1_ENC || e == UTF_16BE_ENC || e == UTF_16LE_ENC
|
||
|| e == UTF_16_ENC)
|
||
break;
|
||
}
|
||
if (ptr + 2 == end)
|
||
return XML_TOK_PARTIAL;
|
||
if ((unsigned char)ptr[2] == 0xBF) {
|
||
*nextTokPtr = ptr + 3;
|
||
*encPtr = encodingTable[UTF_8_ENC];
|
||
return XML_TOK_BOM;
|
||
}
|
||
break;
|
||
default:
|
||
if (ptr[0] == '\0') {
|
||
/* 0 isn't a legal data character. Furthermore a document
|
||
entity can only start with ASCII characters. So the only
|
||
way this can fail to be big-endian UTF-16 if it it's an
|
||
external parsed general entity that's labelled as
|
||
UTF-16LE.
|
||
*/
|
||
if (state == XML_CONTENT_STATE && INIT_ENC_INDEX(enc) == UTF_16LE_ENC)
|
||
break;
|
||
*encPtr = encodingTable[UTF_16BE_ENC];
|
||
return XmlTok(*encPtr, state, ptr, end, nextTokPtr);
|
||
} else if (ptr[1] == '\0') {
|
||
/* We could recover here in the case:
|
||
- parsing an external entity
|
||
- second byte is 0
|
||
- no externally specified encoding
|
||
- no encoding declaration
|
||
by assuming UTF-16LE. But we don't, because this would mean when
|
||
presented just with a single byte, we couldn't reliably determine
|
||
whether we needed further bytes.
|
||
*/
|
||
if (state == XML_CONTENT_STATE)
|
||
break;
|
||
*encPtr = encodingTable[UTF_16LE_ENC];
|
||
return XmlTok(*encPtr, state, ptr, end, nextTokPtr);
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
*encPtr = encodingTable[INIT_ENC_INDEX(enc)];
|
||
return XmlTok(*encPtr, state, ptr, end, nextTokPtr);
|
||
}
|
||
|
||
#define NS(x) x
|
||
#define ns(x) x
|
||
#define XML_TOK_NS_C
|
||
#include "xmltok_ns.c"
|
||
#undef XML_TOK_NS_C
|
||
#undef NS
|
||
#undef ns
|
||
|
||
#ifdef XML_NS
|
||
|
||
# define NS(x) x##NS
|
||
# define ns(x) x##_ns
|
||
|
||
# define XML_TOK_NS_C
|
||
# include "xmltok_ns.c"
|
||
# undef XML_TOK_NS_C
|
||
|
||
# undef NS
|
||
# undef ns
|
||
|
||
ENCODING *
|
||
XmlInitUnknownEncodingNS(void *mem, int *table, CONVERTER convert,
|
||
void *userData) {
|
||
ENCODING *enc = XmlInitUnknownEncoding(mem, table, convert, userData);
|
||
if (enc)
|
||
((struct normal_encoding *)enc)->type[ASCII_COLON] = BT_COLON;
|
||
return enc;
|
||
}
|
||
|
||
#endif /* XML_NS */
|