不得不承認(rèn)，有時(shí)候使用python比c++方便很多，
就拿解析html來說，使用 Beautiful Soup 就比使用libtidy方便很多 - 當(dāng)然也有可能是
Beautiful Soup封裝的很厲害吧
使用Beautiful Soup的一個(gè)例子如下:
from bs4 import BeautifulSoup
soup = BeautifulSoup(open('List.htm'))
for a in soup.find_all('a',class_ = 'link'):
print (a.get('href'))
目的是找出html中class屬性為link的a節(jié)點(diǎn)對應(yīng)的href屬性字符串
如果是使用c++ libtidy的話
對應(yīng)的代碼如下:
Bool TIDY_CALL tidyFilterCb(TidyDoc tdoc,TidyReportLevel lvl,uint line,uint col,ctmbstr mssg)
{
return no;
}
void extractContent(TidyNode node,TidyDoc doc);
void parseContent(TidyNode node,TidyDoc doc)
{
TidyNode child;
for(child = tidyGetChild(node);child;child = tidyGetNext(child))
{
if(tidyNodeIsA(child))
extractContent(child,doc);
else
parseContent(child,doc);
}
}
void extractContent(TidyNode node,TidyDoc doc)
{
if(yes == tidyNodeIsA(node))
{
TidyAttr cls = tidyAttrGetCLASS(node);
if(cls != NULL)
{
char* value = (char*)tidyAttrValue(cls);
if(!strcmp(value,"link"))
{
TidyAttr href = tidyAttrGetHREF(node);
if(href != NULL)
{
char* link = (char*)tidyAttrValue(href);
printf("link:%s\n",link);
return;
}
}
}
}
parseContent(node,doc);
}
void tidyParseHtml(char* file)
{
TidyDoc doc = tidyCreate();
tidySetReportFilter(doc,tidyFilterCb);
tidyParseFile(doc,file);
TidyNode body = tidyGetBody(doc);
TidyNode child;
for(child = tidyGetChild(body);child;child = tidyGetNext(child))
{
parseContent(child,doc);
}
tidyRelease(doc);
}
還是很啰嗦的
當(dāng)然下面的python代碼也能完成任務(wù):
from bs4 import BeautifulSoup
soup = BeautifulSoup(open('List.htm'))
list = soup.select('a[class="link"]')
for a in list:
if a.has_attr('href'):
print (a.get('href'))
如果想分析網(wǎng)頁我覺得BeatifulSoup絕對是一個(gè)利器
鏈接:
http://www.crummy.com/software/BeautifulSoup/bs4/doc/