kf帖子阅读类
This script should not be not be installed directly. It is a library for other scripts to include with the meta directive // @require https://update.greasyfork.org/scripts/397230/777262/kfReaderclass.js
/* kf帖子阅读器,阅读与编辑kf帖子的类.
需要给定url进行初始化.
公有变量,方法:
this.pid:帖子pid
this.page:页数
this.floors:楼层表,如[0,1,2,3]
this.floorContent:楼层内容,关键的量,收集的信息都在这里,一个{},
key是楼层数,内容有3项:{'author':作者,'text':帖子内容,
'a':引用帖子的html元素}
this.show():显示收集内容的情况
*/
class kfReader{
/* 以阅读的帖子的url进行初始化 */
constructor(url){
this.RECORDS_PER_PAGE = 10; // 每一页的主题数,常量
this.url = url;
// 从url找出帖子的pid与页数
var pidAndPage = this._getPidAndPage(url);
this.pid = pidAndPage['pid'];
this.page = pidAndPage['page'];
// 有效楼层表
this.floors = [];
for(var i = 0;i < this.RECORDS_PER_PAGE;i++){
var floor = i+(this.page-1)*this.RECORDS_PER_PAGE; // 楼层
if (!document.getElementById('floor'+floor)){
break; // 楼层结束
}else{
this.floors.push(floor);
}
}
// 各层的内容,包括作者,文本,引用的a元素,格式为:
// {楼层:{'author'(字符串),'text'(字符串), 'a'(html元素)}}
this.floorContent = {};
for(var i = 0;i < this.floors.length;i++){
var floor = this.floors[i]; // 楼层
this.floorContent[floor] = {}
this.floorContent[floor]['author'] = this._getAuthor(floor);
this.floorContent[floor]['text'] = this._getText(floor);
this.floorContent[floor]['a'] = this._getQuoteA(floor);
}
}
/* 在控制台显示阅读结果 */
show(){
var log = console.log;
log('kfReader本页面阅读结果显示:');
log('pid =', this.pid);
log('page =', this.page);
log('楼层信息:');
for(var i = 0;i < this.floors.length;i++){
var floor = this.floors[i];
log('--- 第'+floor+'楼信息: ---');
log('作者:', this.floorContent[floor]['author']);
log('内容前20字:', this.floorContent[floor]['text'].substr(0,20));
if (this.floorContent[floor]['a']){
log('是否找到了引用的a标签:', '是');
}else{
log('是否找到了引用的a标签:', '否');
}
}
}
/* 获取当前url的pid(帖子唯一标识号码)与页数. */
_getPidAndPage(url){
// 指定返回对象,设定默认值
var result = {'pid':null, 'page':1};
// 匹配pid
var pidReg = /\?tid\=(\d+)/;
var matchPid = url.match(pidReg);
if (matchPid){
result['pid'] = matchPid[1];
}
// 匹配page
var pageReg = /&page\=(\d+)/;
var matchPage = url.match(pageReg);
if (matchPage){
result['page'] = parseInt(matchPage[1]);
}
// 返回
return result;
}
/* 获取第floor层的作者,查找失败返回null */
_getAuthor(floor){
var n = floor%10;
var authorsA = document.getElementsByClassName('readidmsbottom_n');
if (authorsA.length <= n){return null;}
return authorsA[n].innerText;
}
/* 获取第floor层的文本,查找失败返回null */
_getText(floor){
// 首先获取楼层标识div,同时测试该楼层是否存在
var floorFlagDiv = document.getElementById('floor'+floor);
if (!floorFlagDiv){
console.log('找不到楼层'+floor);
return null;
}
// 获取文本相关的div,并处理其中文本
var textDiv = floorFlagDiv.parentElement;
var textSplit = (textDiv.innerText+" ").split('TOP\n看TA\n回复\n菜单')[1].split('关键词');
textSplit[0] = textSplit[0].replace(/^\n/, '');
var text = '';
if (textSplit.length == 1){
text = textSplit[0];
}else{
for(var i = 0;i < textSplit.length-1;i++){
if (i > 0){text = text+'关键词';}
text = text + textSplit[i];
}
}
return text;
}
/* 查找第floor楼的引用帖子a标签,查找失败返回null */
_getQuoteA(floor){
//第floor层
var div = document.getElementById('floor'+floor);
if (!div){return null;}
//查找所有的a,直到内部文本为包含'引用'
var a = div.getElementsByTagName('a');
for(var i = 0;i < a.length;i++){
if(a[i].innerText.indexOf('引用') > -1){
return a[i];
}
}
return null;
}
}