CNode::startPos 与CNode::endPos颠倒的问题 #23

dptr · 2015-12-30T03:42:22Z

问题场景：

给定这样一个page：

std::string page = "<!DOCTYPE html><html lang=\"en\"><head><meta charset=\"UTF-8\"><title>Title</title></head><body><img src=\"file:///d:/test.png\" /><img src=\"file:///d:/test2.png\" /><img src=\"http://blablabla.png\" /><div><div><img src=\"http://asdfasfdsaf.com/asdf.png\" alt=\"alternative text\"/><img src=\"file:///d:/test3.png\" /></div><div1><div2><div3><img id=\"imgId2\" src=\"http://www.taobao.com\" /><pre><img src=\"file:///foo\" id=\"bar\" id=\"notexists\"/></pre></div3></div2></div1></div></body></html>";

在其中查找所有tag为img的node

auto nodes = doc.find("IMG");

然后取出这些node的 startPos 和 endPos ，
发现它们 startPos 是指向标签末尾的，endPos指向标签开始，是不是这两个函数的实现搞反了？

The text was updated successfully, but these errors were encountered:

nifflin · 2015-12-30T08:37:20Z

哥们儿,qq多少

qyvlik · 2016-04-13T13:33:32Z

确实是反过来了。

qyvlik · 2016-04-13T13:55:00Z

测试代码如下：

void test_image_tag() {
    std::string page = "<img />";
    CDocument doc;

    doc.parse(page.c_str());
    CNode node = doc.find("IMG").nodeAt(0);
    std::cout << "startPos:" << node.startPos() <<" endPos:"<< node.endPos() << std::endl;
    std::cout << "startPosOuter:" << node.startPosOuter() <<" endPosOuter:"<< node.endPosOuter() << std::endl;
}

输出如下：

startPos:7 endPos:0
startPosOuter:0 endPosOuter:0

另一个测试代码

void test_div_tag() {
    std::string page = "<div></div>";
    CDocument doc;

    doc.parse(page.c_str());
    CNode node = doc.find("div").nodeAt(0);
    std::cout << "startPos:" << node.startPos() <<" endPos:"<< node.endPos() << std::endl;
    std::cout << "startPosOuter:" << node.startPosOuter() <<" endPosOuter:"<< node.endPosOuter() << std::endl;
}

输出如下：

startPos:5 endPos:5
startPosOuter:0 endPosOuter:11

测试 input 标签和 img 标签结果类似。

@lazytiger

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CNode::startPos 与CNode::endPos颠倒的问题 #23

CNode::startPos 与CNode::endPos颠倒的问题 #23

dptr commented Dec 30, 2015

nifflin commented Dec 30, 2015

qyvlik commented Apr 13, 2016

qyvlik commented Apr 13, 2016

CNode::startPos 与CNode::endPos颠倒的问题 #23

CNode::startPos 与CNode::endPos颠倒的问题 #23

Comments

dptr commented Dec 30, 2015

nifflin commented Dec 30, 2015

qyvlik commented Apr 13, 2016

qyvlik commented Apr 13, 2016