shaba/libxml2
1
0
Fork 0
mirror of https://gitlab.gnome.org/GNOME/libxml2.git synced 2025-03-09 04:58:16 +03:00
Code

Simplify handling of parameter entity references

Browse Source 
There are only two places where parameter entity references must be
handled. For the internal subset in xmlParseInternalSubset. For the
external subset or content from other external PEs in xmlSkipBlankChars.

Make sure that xmlSkipBlankChars skips over sequences of PEs and
whitespace. Rely on xmlSkipBlankChars instead of calling
xmlParsePEReference directly when in the external subset or a
conditional section.

xmlParserHandlePEReference is unused now.
This commit is contained in:
Nick Wellnhofer 2017-06-18 23:29:51 +02:00
parent 24246c7626
commit aa267cd127
2 changed files with 21 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

56
parser.c
View File

@ -2043,7 +2043,6 @@ static int spacePop(xmlParserCtxtPtr ctxt) {
#define SKIP(val) do { \
ctxt->nbChars += (val),ctxt->input->cur += (val),ctxt->input->col+=(val); \
if (*ctxt->input->cur == '%') xmlParserHandlePEReference(ctxt); \
if ((*ctxt->input->cur == 0) && \
(xmlParserInputGrow(ctxt->input, INPUT_CHUNK) <= 0)) \
xmlPopInput(ctxt); \
@ -2058,7 +2057,6 @@ static int spacePop(xmlParserCtxtPtr ctxt) {
ctxt->nbChars++; \
ctxt->input->cur++; \
} \
if (*ctxt->input->cur == '%') xmlParserHandlePEReference(ctxt); \
if ((*ctxt->input->cur == 0) && \
(xmlParserInputGrow(ctxt->input, INPUT_CHUNK) <= 0)) \
xmlPopInput(ctxt); \
@ -2170,26 +2168,27 @@ xmlSkipBlankChars(xmlParserCtxtPtr ctxt) {
}
ctxt->input->cur = cur;
} else {
int cur;
do {
cur = CUR;
while ((IS_BLANK_CH(cur) && /* CHECKED tstblanks.xml */
(ctxt->instate != XML_PARSER_EOF))) {
int expandPE = ((ctxt->external != 0) || (ctxt->inputNr != 1));
while (1) {
if (IS_BLANK_CH(CUR)) { /* CHECKED tstblanks.xml */
NEXT;
cur = CUR;
res++;
}
while ((cur == 0) && (ctxt->inputNr > 1) &&
(ctxt->instate != XML_PARSER_COMMENT)) {
xmlPopInput(ctxt);
cur = CUR;
}
/*
* Need to handle support of entities branching here
*/
if (*ctxt->input->cur == '%') xmlParserHandlePEReference(ctxt);
} while ((IS_BLANK(cur)) && /* CHECKED tstblanks.xml */
(ctxt->instate != XML_PARSER_EOF));
} else if (CUR == '%') {
/*
* Need to handle support of entities branching here
*/
if ((expandPE == 0) || (IS_BLANK_CH(NXT(1))) || (NXT(1) == 0))
break;
xmlParsePEReference(ctxt);
} else if (CUR == 0) {
if (ctxt->inputNr <= 1)
break;
xmlPopInput(ctxt);
} else {
break;
}
}
}
return(res);
}
@ -6730,12 +6729,9 @@ xmlParseConditionalSections(xmlParserCtxtPtr ctxt) {
const xmlChar *check = CUR_PTR;
unsigned int cons = ctxt->input->consumed;
SKIP_BLANKS;
if ((RAW == '<') && (NXT(1) == '!') && (NXT(2) == '[')) {
xmlParseConditionalSections(ctxt);
} else if (IS_BLANK_CH(CUR)) {
NEXT;
} else if (RAW == '%') {
xmlParsePEReference(ctxt);
} else
xmlParseMarkupDecl(ctxt);
@ -6906,13 +6902,6 @@ xmlParseMarkupDecl(xmlParserCtxtPtr ctxt) {
if (ctxt->instate == XML_PARSER_EOF)
return;
/*
* This is only for internal subset. On external entities,
* the replacement is done before parsing stage
*/
if ((ctxt->external == 0) && (ctxt->inputNr == 1))
xmlParsePEReference(ctxt);
/*
* Conditional sections are allowed from entities included
* by PE References in the internal subset.
@ -7060,13 +7049,10 @@ xmlParseExternalSubset(xmlParserCtxtPtr ctxt, const xmlChar *ExternalID,
const xmlChar *check = CUR_PTR;
unsigned int cons = ctxt->input->consumed;
SKIP_BLANKS;
GROW;
if ((RAW == '<') && (NXT(1) == '!') && (NXT(2) == '[')) {
xmlParseConditionalSections(ctxt);
} else if (IS_BLANK_CH(CUR)) {
NEXT;
} else if (RAW == '%') {
xmlParsePEReference(ctxt);
} else
xmlParseMarkupDecl(ctxt);

2
parserInternals.c
View File

@ -541,8 +541,6 @@ xmlNextChar(xmlParserCtxtPtr ctxt)
if (*ctxt->input->cur == 0)
xmlParserInputGrow(ctxt->input, INPUT_CHUNK);
}
if ((*ctxt->input->cur == '%') && (!ctxt->html))
xmlParserHandlePEReference(ctxt);
if ((*ctxt->input->cur == 0) &&
(xmlParserInputGrow(ctxt->input, INPUT_CHUNK) <= 0))
xmlPopInput(ctxt);