📄 xmlparse.c
字号:
while ((*to++ = *from++) != 0)
;
}
endElementHandler(handlerArg, tag->name.str);
}
else if (defaultHandler)
reportDefault(parser, enc, s, next);
while (tag->bindings) {
BINDING *b = tag->bindings;
if (endNamespaceDeclHandler)
endNamespaceDeclHandler(handlerArg, b->prefix->name);
tag->bindings = tag->bindings->nextTagBinding;
b->nextTagBinding = freeBindingList;
freeBindingList = b;
b->prefix->binding = b->prevPrefixBinding;
}
if (tagLevel == 0)
return epilogProcessor(parser, next, end, nextPtr);
}
break;
case XML_TOK_CHAR_REF:
{
int n = XmlCharRefNumber(enc, s);
if (n < 0)
return XML_ERROR_BAD_CHAR_REF;
if (characterDataHandler) {
XML_Char buf[XML_ENCODE_MAX];
characterDataHandler(handlerArg, buf, XmlEncode(n, (ICHAR *)buf));
}
else if (defaultHandler)
reportDefault(parser, enc, s, next);
}
break;
case XML_TOK_XML_DECL:
return XML_ERROR_MISPLACED_XML_PI;
case XML_TOK_DATA_NEWLINE:
if (characterDataHandler) {
XML_Char c = 0xA;
characterDataHandler(handlerArg, &c, 1);
}
else if (defaultHandler)
reportDefault(parser, enc, s, next);
break;
case XML_TOK_CDATA_SECT_OPEN:
{
enum XML_Error result;
if (startCdataSectionHandler)
startCdataSectionHandler(handlerArg);
#if 0
/* Suppose you doing a transformation on a document that involves
changing only the character data. You set up a defaultHandler
and a characterDataHandler. The defaultHandler simply copies
characters through. The characterDataHandler does the transformation
and writes the characters out escaping them as necessary. This case
will fail to work if we leave out the following two lines (because &
and < inside CDATA sections will be incorrectly escaped).
However, now we have a start/endCdataSectionHandler, so it seems
easier to let the user deal with this. */
else if (characterDataHandler)
characterDataHandler(handlerArg, dataBuf, 0);
#endif
else if (defaultHandler)
reportDefault(parser, enc, s, next);
result = doCdataSection(parser, enc, &next, end, nextPtr);
if (!next) {
processor = cdataSectionProcessor;
return result;
}
}
break;
case XML_TOK_TRAILING_RSQB:
if (nextPtr) {
*nextPtr = s;
return XML_ERROR_NONE;
}
if (characterDataHandler) {
if (MUST_CONVERT(enc, s)) {
ICHAR *dataPtr = (ICHAR *)dataBuf;
XmlConvert(enc, &s, end, &dataPtr, (ICHAR *)dataBufEnd);
characterDataHandler(handlerArg, dataBuf, dataPtr - (ICHAR *)dataBuf);
}
else
characterDataHandler(handlerArg,
(XML_Char *)s,
(XML_Char *)end - (XML_Char *)s);
}
else if (defaultHandler)
reportDefault(parser, enc, s, end);
if (startTagLevel == 0) {
*eventPP = end;
return XML_ERROR_NO_ELEMENTS;
}
if (tagLevel != startTagLevel) {
*eventPP = end;
return XML_ERROR_ASYNC_ENTITY;
}
return XML_ERROR_NONE;
case XML_TOK_DATA_CHARS:
if (characterDataHandler) {
if (MUST_CONVERT(enc, s)) {
for (;;) {
ICHAR *dataPtr = (ICHAR *)dataBuf;
XmlConvert(enc, &s, next, &dataPtr, (ICHAR *)dataBufEnd);
*eventEndPP = s;
characterDataHandler(handlerArg, dataBuf, dataPtr - (ICHAR *)dataBuf);
if (s == next)
break;
*eventPP = s;
}
}
else
characterDataHandler(handlerArg,
(XML_Char *)s,
(XML_Char *)next - (XML_Char *)s);
}
else if (defaultHandler)
reportDefault(parser, enc, s, next);
break;
case XML_TOK_PI:
if (!reportProcessingInstruction(parser, enc, s, next))
return XML_ERROR_NO_MEMORY;
break;
case XML_TOK_COMMENT:
if (!reportComment(parser, enc, s, next))
return XML_ERROR_NO_MEMORY;
break;
default:
if (defaultHandler)
reportDefault(parser, enc, s, next);
break;
}
*eventPP = s = next;
}
/* not reached */
}
/* If tagNamePtr is non-null, build a real list of attributes,
otherwise just check the attributes for well-formedness. */
static enum XML_Error storeAtts(XML_Parser parser, const ENCODING *enc,
const char *attStr, TAG_NAME *tagNamePtr,
BINDING **bindingsPtr)
{
ELEMENT_TYPE *elementType = 0;
int nDefaultAtts = 0;
const XML_Char **appAtts; /* the attribute list to pass to the application */
int attIndex = 0;
int i;
int n;
int nPrefixes = 0;
BINDING *binding;
const XML_Char *localPart;
/* lookup the element type name */
if (tagNamePtr) {
elementType = (ELEMENT_TYPE *)lookup(&dtd.elementTypes, tagNamePtr->str,0);
if (!elementType) {
tagNamePtr->str = poolCopyString(&dtd.pool, tagNamePtr->str);
if (!tagNamePtr->str)
return XML_ERROR_NO_MEMORY;
elementType = (ELEMENT_TYPE *)lookup(&dtd.elementTypes, tagNamePtr->str, sizeof(ELEMENT_TYPE));
if (!elementType)
return XML_ERROR_NO_MEMORY;
if (ns && !setElementTypePrefix(parser, elementType))
return XML_ERROR_NO_MEMORY;
}
nDefaultAtts = elementType->nDefaultAtts;
}
/* get the attributes from the tokenizer */
n = XmlGetAttributes(enc, attStr, attsSize, atts);
if (n + nDefaultAtts > attsSize) {
int oldAttsSize = attsSize;
attsSize = n + nDefaultAtts + INIT_ATTS_SIZE;
atts = REALLOC((void *)atts, attsSize * sizeof(ATTRIBUTE));
if (!atts)
return XML_ERROR_NO_MEMORY;
if (n > oldAttsSize)
XmlGetAttributes(enc, attStr, n, atts);
}
appAtts = (const XML_Char **)atts;
for (i = 0; i < n; i++) {
/* add the name and value to the attribute list */
ATTRIBUTE_ID *attId = getAttributeId(parser, enc, atts[i].name,
atts[i].name
+ XmlNameLength(enc, atts[i].name));
if (!attId)
return XML_ERROR_NO_MEMORY;
/* detect duplicate attributes */
if ((attId->name)[-1]) {
if (enc == encoding)
eventPtr = atts[i].name;
return XML_ERROR_DUPLICATE_ATTRIBUTE;
}
(attId->name)[-1] = 1;
appAtts[attIndex++] = attId->name;
if (!atts[i].normalized) {
enum XML_Error result;
int isCdata = 1;
/* figure out whether declared as other than CDATA */
if (attId->maybeTokenized) {
int j;
for (j = 0; j < nDefaultAtts; j++) {
if (attId == elementType->defaultAtts[j].id) {
isCdata = elementType->defaultAtts[j].isCdata;
break;
}
}
}
/* normalize the attribute value */
result = storeAttributeValue(parser, enc, isCdata,
atts[i].valuePtr, atts[i].valueEnd,
&tempPool);
if (result)
return result;
if (tagNamePtr) {
appAtts[attIndex] = poolStart(&tempPool);
poolFinish(&tempPool);
}
else
poolDiscard(&tempPool);
}
else if (tagNamePtr) {
/* the value did not need normalizing */
appAtts[attIndex] = poolStoreString(&tempPool, enc, atts[i].valuePtr, atts[i].valueEnd);
if (appAtts[attIndex] == 0)
return XML_ERROR_NO_MEMORY;
poolFinish(&tempPool);
}
/* handle prefixed attribute names */
if (attId->prefix && tagNamePtr) {
if (attId->xmlns) {
/* deal with namespace declarations here */
if (!addBinding(parser, attId->prefix, attId, appAtts[attIndex], bindingsPtr))
return XML_ERROR_NO_MEMORY;
--attIndex;
}
else {
/* deal with other prefixed names later */
attIndex++;
nPrefixes++;
(attId->name)[-1] = 2;
}
}
else
attIndex++;
}
if (tagNamePtr) {
int j;
nSpecifiedAtts = attIndex;
if (elementType->idAtt && (elementType->idAtt->name)[-1]) {
for (i = 0; i < attIndex; i += 2)
if (appAtts[i] == elementType->idAtt->name) {
idAttIndex = i;
break;
}
}
else
idAttIndex = -1;
/* do attribute defaulting */
for (j = 0; j < nDefaultAtts; j++) {
const DEFAULT_ATTRIBUTE *da = elementType->defaultAtts + j;
if (!(da->id->name)[-1] && da->value) {
if (da->id->prefix) {
if (da->id->xmlns) {
if (!addBinding(parser, da->id->prefix, da->id, da->value, bindingsPtr))
return XML_ERROR_NO_MEMORY;
}
else {
(da->id->name)[-1] = 2;
nPrefixes++;
appAtts[attIndex++] = da->id->name;
appAtts[attIndex++] = da->value;
}
}
else {
(da->id->name)[-1] = 1;
appAtts[attIndex++] = da->id->name;
appAtts[attIndex++] = da->value;
}
}
}
appAtts[attIndex] = 0;
}
i = 0;
if (nPrefixes) {
/* expand prefixed attribute names */
for (; i < attIndex; i += 2) {
if (appAtts[i][-1] == 2) {
ATTRIBUTE_ID *id;
((XML_Char *)(appAtts[i]))[-1] = 0;
id = (ATTRIBUTE_ID *)lookup(&dtd.attributeIds, appAtts[i], 0);
if (id->prefix->binding) {
int j;
const BINDING *b = id->prefix->binding;
const XML_Char *s = appAtts[i];
for (j = 0; j < b->uriLen; j++) {
if (!poolAppendChar(&tempPool, b->uri[j]))
return XML_ERROR_NO_MEMORY;
}
while (*s++ != ':')
;
do {
if (!poolAppendChar(&tempPool, *s))
return XML_ERROR_NO_MEMORY;
} while (*s++);
if (ns_triplets) {
tempPool.ptr[-1] = namespaceSeparator;
s = b->prefix->name;
do {
if (!poolAppendChar(&tempPool, *s))
return XML_ERROR_NO_MEMORY;
} while (*s++);
}
appAtts[i] = poolStart(&tempPool);
poolFinish(&tempPool);
}
if (!--nPrefixes)
break;
}
else
((XML_Char *)(appAtts[i]))[-1] = 0;
}
}
/* clear the flags that say whether attributes were specified */
for (; i < attIndex; i += 2)
((XML_Char *)(appAtts[i]))[-1] = 0;
if (!tagNamePtr)
return XML_ERROR_NONE;
for (binding = *bindingsPtr; binding; binding = binding->nextTagBinding)
binding->attId->name[-1] = 0;
/* expand the element type name */
if (elementType->prefix) {
binding = elementType->prefix->binding;
if (!binding)
return XML_ERROR_NONE;
localPart = tagNamePtr->str;
while (*localPart++ != XML_T(':'))
;
}
else if (dtd.defaultPrefix.binding) {
binding = dtd.defaultPrefix.binding;
localPart = tagNamePtr->str;
}
else
return XML_ERROR_NONE;
tagNamePtr->localPart = localPart;
tagNamePtr->uriLen = binding->uriLen;
for (i = 0; localPart[i++];)
;
n = i + binding->uriLen;
if (n > binding->uriAlloc) {
TAG *p;
XML_Char *uri = MALLOC((n + EXPAND_SPARE) * sizeof(XML_Char));
if (!uri)
return XML_ERROR_NO_MEMORY;
binding->uriAlloc = n + EXPAND_SPARE;
memcpy(uri, binding->uri, binding->uriLen * sizeof(XML_Char));
for (p = tagStack; p; p = p->parent)
if (p->name.str == binding->uri)
p->name.str = uri;
FREE(binding->uri);
binding->uri = uri;
}
memcpy(binding->uri + binding->uriLen, localPart, i * sizeof(XML_Char));
tagNamePtr->str = binding->uri;
return XML_ERROR_NONE;
}
static
int addBinding(XML_Parser parser, PREFIX *prefix, const ATTRIBUTE_ID *attId, const XML_Char *uri, BINDING **bindingsPtr)
{
BINDING *b;
int len;
for (len = 0; uri[len]; len++)
;
if (namespaceSeparator)
len++;
if (freeBindingList) {
b = freeBindingList;
if (len > b->uriAlloc) {
b->uri = REALLOC(b->uri, sizeof(XML_Char) * (len + EXPAND_SPARE));
if (!b->uri)
return 0;
b->uriAlloc = len + EXPAND_SPARE;
}
freeBindingList = b->nextTagBinding;
}
else {
b = MALLOC(sizeof(BINDING));
if (!b)
return 0;
b->uri = MALLOC(sizeof(XML_Char) * (len + EXPAND_SPARE));
if (!b->uri) {
FREE(b);
return 0;
}
b->uriAlloc = len + EXPAND_SPARE;
}
b->uriLen = len;
memcpy(b->uri, uri, len * sizeof(XML_Char));
if (namespaceSeparator)
b->uri[len - 1] = namespaceSeparator;
b->prefix = prefix;
b->attId = attId;
b->prevPrefixBinding = prefix->binding;
if (*uri == XML_T('\0') && prefix == &dtd.defaultPrefix)
prefix->binding = 0;
else
prefix->binding = b;
b->nextTagBinding = *bindingsPtr;
*bindingsPtr = b;
if (startNamespaceDeclHandler)
startNamespaceDeclHandler(handlerArg, prefix->name,
prefix->binding ? uri : 0);
return 1;
}
/* The idea here is to avoid using stack for each CDATA section when
the whole file is parsed with one call. */
static
enum XML_Error cdataSectionProcessor(XML_Parser parser,
const char *start,
const char *end,
const char **endPtr)
{
enum XML_Error result = doCdataSection(parser, enc⌨️ 快捷键说明
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