Desist libxml from continuing the parse after a SAX callback has stopped the
parse.
Attempt 2 -- now with less compile fail on Mac / Clang.

BUG=95465
TBR=cdn
TEST=covered by existing tests under ASAN
Review URL: http://codereview.chromium.org/7892003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@100953 0039d316-1c4b-4281-b951-d872f2087c98
xmlParsePubidLiteral(xmlParserCtxtPtr ctxt) {
    xmlChar *buf = NULL;
    int len = 0;
    int size = XML_PARSER_BUFFER_SIZE;
    xmlChar cur;
    xmlChar stop;
    int count = 0;
    xmlParserInputState oldstate = ctxt->instate;

    SHRINK;
    if (RAW == '"') {
        NEXT;
	stop = '"';
    } else if (RAW == '\'') {
        NEXT;
	stop = '\'';
    } else {
	xmlFatalErr(ctxt, XML_ERR_LITERAL_NOT_STARTED, NULL);
	return(NULL);
    }
    buf = (xmlChar *) xmlMallocAtomic(size * sizeof(xmlChar));
    if (buf == NULL) {
	xmlErrMemory(ctxt, NULL);
	return(NULL);
    }
    ctxt->instate = XML_PARSER_PUBLIC_LITERAL;
    cur = CUR;
    while ((IS_PUBIDCHAR_CH(cur)) && (cur != stop)) { /* checked */
	if (len + 1 >= size) {
	    xmlChar *tmp;

	    size *= 2;
	    tmp = (xmlChar *) xmlRealloc(buf, size * sizeof(xmlChar));
	    if (tmp == NULL) {
		xmlErrMemory(ctxt, NULL);
		xmlFree(buf);
		return(NULL);
	    }
	    buf = tmp;
	}
	buf[len++] = cur;
	count++;
	if (count > 50) {
	    GROW;
	    count = 0;
	}
	NEXT;
	cur = CUR;
	if (cur == 0) {
	    GROW;
	    SHRINK;
	    cur = CUR;
	}
    }
    buf[len] = 0;
    if (cur != stop) {
	xmlFatalErr(ctxt, XML_ERR_LITERAL_NOT_FINISHED, NULL);
    } else {
	NEXT;
    }
    ctxt->instate = oldstate;
    return(buf);
}

xmlParsePubidLiteral(xmlParserCtxtPtr ctxt) {
    xmlChar *buf = NULL;
    int len = 0;
    int size = XML_PARSER_BUFFER_SIZE;
    xmlChar cur;
    xmlChar stop;
    int count = 0;
    xmlParserInputState oldstate = ctxt->instate;

    SHRINK;
    if (RAW == '"') {
        NEXT;
	stop = '"';
    } else if (RAW == '\'') {
        NEXT;
	stop = '\'';
    } else {
	xmlFatalErr(ctxt, XML_ERR_LITERAL_NOT_STARTED, NULL);
	return(NULL);
    }
    buf = (xmlChar *) xmlMallocAtomic(size * sizeof(xmlChar));
    if (buf == NULL) {
	xmlErrMemory(ctxt, NULL);
	return(NULL);
    }
    ctxt->instate = XML_PARSER_PUBLIC_LITERAL;
    cur = CUR;
    while ((IS_PUBIDCHAR_CH(cur)) && (cur != stop)) { /* checked */
	if (len + 1 >= size) {
	    xmlChar *tmp;

	    size *= 2;
	    tmp = (xmlChar *) xmlRealloc(buf, size * sizeof(xmlChar));
	    if (tmp == NULL) {
		xmlErrMemory(ctxt, NULL);
		xmlFree(buf);
		return(NULL);
	    }
	    buf = tmp;
	}
	buf[len++] = cur;
	count++;
	if (count > 50) {
	    GROW;
	    count = 0;
	}
	NEXT;
	cur = CUR;
	if (cur == 0) {
	    GROW;
	    SHRINK;
	    cur = CUR;
	}
    }
    buf[len] = 0;
    if (cur != stop) {
	xmlFatalErr(ctxt, XML_ERR_LITERAL_NOT_FINISHED, NULL);
    } else {
	NEXT;
    }
    ctxt->instate = oldstate;
    return(buf);
}
