void htmlcxx::HTML::ParserSax::parseHtmlTag(_Iterator b, _Iterator c)
{
_Iterator name_begin(b); //申请一个新的游标name_begin游标，初始为b
++name_begin;//将name_begin后移一位
bool is_end_tag = (*name_begin == '/'); //判断name_begin是否是’/’，如果是则说明是结束型tag标签
if (is_end_tag) ++name_begin;//如果是结束型的tag标签，则再将name_begin前进一位，跳过’/’符号
_Iterator name_end(name_begin); //申请一个新的name_end游标，记录一下name_begin标签。
while (name_end != c && isalnum(*name_end)) //将name_end后移，直到遇到了文档末尾或者普通字符(字母或者数字)为止。
{
++name_end;
}
std::string name(name_begin, name_end);//取name_begin和name_end之间的这段文本认为是tagName并赋值给一个string型的变量name
//DEBUGP("Found %s tag %s\n", is_end_tag ? "closing" : "opening", name.c_str());
/*
之后，我们要对这个Name做一些判断，判断其是否是特殊类型的tag标签，
即是否是前面literal_mode_elem[]数组中的某个标签。
*/
if (!is_end_tag) //首先得判断这不是一个结束型的标签
{
std::string::size_type tag_len = name.length();
for (int i = 0; literal_mode_elem[i].len; ++i)
{
if (tag_len == literal_mode_elem[i].len)
{
#if defined(WIN32) && !defined(__MINGW32__)
if (!_stricmp(name.c_str(), literal_mode_elem[i].str))
#else
if (!strcmp(name.c_str(), literal_mode_elem[i].str)) //--modified by wujun 2013.5.7 --orgi: [ if (!strcasecmp(name.c_str(), literal_mode_elem[i].str)) ]
#endif
{
mpLiteral = literal_mode_elem[i].str;
break;
}
}
}
}
//之后，我们就可以将其作为Node节点来做一些存储的工作了。
htmlcxx::HTML::Node tag_node;
//by now, length is just the size of the tag
std::string text(b, c);
tag_node.length(static_cast<unsigned int>(text.length()));
tag_node.tagName(name);
tag_node.text(text);
tag_node.offset(mCurrentOffset);
tag_node.isTag(true);
tag_node.isComment(false);
mCurrentOffset += tag_node.length();//将当前的解析位置后移
this->foundTag(tag_node, is_end_tag);//调用方法将其加入到已有的Html树中
}
int
sm_marid_scan_expression(
char const **s_inout,
char const *e,
sm_marid_expression *expr_out)
{
char const *s, *x;
s = *s_inout;
/* skip leading spaces. */
while (s < e && *s == ' ')
s++;
/* fast forward to this term's end. */
for (x = s; x < e && *x != ' '; x++)
;
if (s < e && SM_MARID_IS_DIRECTIVE_PREFIX(*s))
expr_out->smx_prefix = *s++;
else
{
char const *p;
/* This might be a modifier, not a mechanism. Check. */
if ((p = name_end(s, e)) != NULL && p < e && *p == '=')
{
expr_out->smx_type = SM_MARID_MODIFIER;
expr_out->smx_name_s = s;
expr_out->smx_name_e = p;
expr_out->smx_value_s = p + 1;
expr_out->smx_value_e = x;
while (x < e && *x == ' ')
x++;
*s_inout = x;
return 0;
}
/* The default prefix value is + */
expr_out->smx_prefix = '+';
}
expr_out->smx_type = SM_MARID_DIRECTIVE;
expr_out->smx_name_s = s;
expr_out->smx_name_e = s = name_end(s, e);
expr_out->smx_value_s = NULL;
expr_out->smx_value_e = NULL;
expr_out->smx_cidr_s = NULL;
expr_out->smx_cidr_e = NULL;
if (s == NULL)
{
*s_inout = e;
return -1;
}
if (s < e && *s == ':')
{
expr_out->smx_value_s = s + 1;
expr_out->smx_value_e = x;
}
else
{
if (s < x)
{
if (*s != '/')
{
*s_inout = e;
return -1;
}
expr_out->smx_cidr_s = s;
for (;;)
{
s++;
if (s >= x || !SM_MARID_IS_DIGIT(*s))
{
*s_inout = e;
return -1;
}
while (s < x && SM_MARID_IS_DIGIT(*s))
s++;
if (s == x)
break;
if (*s != '/')
{
*s_inout = e;
return -1;
}
}
expr_out->smx_cidr_e = s;
s = x;
}
}
while (x < e && *x == ' ')
x++;
*s_inout = x;
return 0;
}
