diff --git a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByJSoup.kt b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByJSoup.kt index 3bb2e4e33..dfc5cae23 100644 --- a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByJSoup.kt +++ b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByJSoup.kt @@ -1,496 +1,525 @@ package io.legado.app.model.analyzeRule -import android.text.TextUtils.join -import androidx.annotation.Keep -import org.jsoup.Jsoup -import org.jsoup.nodes.Element -import org.jsoup.select.Collector -import org.jsoup.select.Elements -import org.jsoup.select.Evaluator -import org.seimicrawler.xpath.JXNode -import java.util.* - -/** - * Created by GKF on 2018/1/25. - * 书源规则解析 - */ -@Keep -class AnalyzeByJSoup(doc: Any) { - companion object { - /** - * "class", "id", "tag", "text", "children" - */ - val validKeys = arrayOf("class", "id", "tag", "text", "children") +//通用的规则切分处理 - fun parse(doc: Any): Element { - return when (doc) { - is Element -> doc - is JXNode -> if (doc.isElement) doc.asElement() else Jsoup.parse(doc.toString()) - else -> Jsoup.parse(doc.toString()) - } - } +class RuleAnalyzer(data: String) { + + private var queue: String = data //被处理字符串 + private var pos = 0 //处理到的位置 + + private var start = 0 //每次处理字段的开始 + private var step:Int = 0 //分割字符的长度 + + var elementsType = "" + + //当前平衡字段 + fun currBalancedString( stepStart:Int = 1 , stepEnd:Int = 1): String { //stepStart平衡字符的起始分隔字串长度,stepEnd平衡字符的结束分隔字串长度 + return queue.substring(start+stepStart,pos-stepEnd) //当前平衡字段 + } + //将pos重置为0,方便复用 + fun reSetPos() { + pos = 0 } - private var element: Element = parse(doc) + //当前拉取字段 + fun currString(): String { + return queue.substring(start,pos) //当前拉取到的字段 + } + + //剩余字串 + private fun remainingString(): String { + start = pos + pos = queue.length + return queue.substring(start) + } /** - * 获取列表 + * pos位置回退 */ - internal fun getElements(rule: String) = getElements(element, rule) + fun back(num :Int = 0) { + if(num == 0)pos = start //回退 + else pos -= num + } /** - * 合并内容列表,得到内容 + * pos位置后移 */ - internal fun getString(ruleStr: String) = - if(ruleStr.isEmpty()) null - else getStringList(ruleStr).takeIf { it.isNotEmpty() }?.joinToString("\n") + fun advance(num :Int = 1) { + pos+=num + } /** - * 获取一个字符串 + * 是否已无剩余字符? + * @return 若剩余字串中已无字符则返回true */ - internal fun getString0(ruleStr: String) = getStringList(ruleStr).let{ if ( it.isEmpty() ) "" else it[0] } + val isEmpty: Boolean + get() = queue.length - pos == 0 //是否处理到最后 /** - * 获取所有内容列表 + * 检索并返回首字符,但pos不变 + * @return 首字符:若为空则为 0 号字符 */ - internal fun getStringList(ruleStr: String): List { - - val textS = ArrayList() - - if (ruleStr.isEmpty()) return textS - - //拆分规则 - val sourceRule = SourceRule(ruleStr) - - if (sourceRule.elementsRule.isEmpty()) { - - textS.add(element.data() ?: "") - - } else { - - val ruleAnalyzes = RuleAnalyzer(sourceRule.elementsRule) - val ruleStrS = ruleAnalyzes.splitRule("&&","||" ,"%%") - - val results = ArrayList>() - for (ruleStrX in ruleStrS) { + fun peek(): Char { //检索首字符 + return if (isEmpty) 0.toChar() else queue[pos] + } - val temp: List? = - if (sourceRule.isCss) { - val lastIndex = ruleStrX.lastIndexOf('@') - getResultLast( - element.select(ruleStrX.substring(0, lastIndex)), - ruleStrX.substring(lastIndex + 1) - ) - } else { - getResultList(ruleStrX) - } + /** + * 消耗剩余字串中一个字符。 + * @return 返回剩余字串中的下个字符。 + */ + fun consume(): Char { + return queue[pos++] + } - if (!temp.isNullOrEmpty()) { + /** + * 字串与剩余字串是否匹配,不区分大小写 + * @param seq 字符串被检查 + * @return 若下字符串匹配返回 true + */ + fun matches(seq: String): Boolean { + return queue.regionMatches(pos, seq, 0, seq.length, ignoreCase = true) + } - results.add(temp) //!temp.isNullOrEmpty()时,results.isNotEmpty()为true + /** + * 从剩余字串中拉出一个字符串,直到但不包括匹配序列,或剩余字串用完。 + * @param seq 分隔字符 **区分大小写** + * @return 是否找到相应字段。 + */ + fun consumeTo(seq: String,setStartPos:Boolean = true): Boolean { - if (ruleAnalyzes.elementsType == "||") break + if(setStartPos)start = pos //将处理到的位置设置为规则起点 + val offset = queue.indexOf(seq, pos) + return if (offset != -1) { + pos = offset + true + } else false - } - } - if (results.size > 0) { - if ("%%" == ruleAnalyzes.elementsType) { - for (i in results[0].indices) { - for (temp in results) { - if (i < temp.size) { - textS.add(temp[i]) - } - } - } - } else { - for (temp in results) { - textS.addAll(temp) - } - } - } - } - return textS } /** - * 获取Elements + * 从剩余字串中拉出一个字符串,直到但不包括匹配序列(匹配参数列表中一项即为匹配),或剩余字串用完。 + * @param seq 匹配字符串序列 + * @return 成功返回true并设置间隔,失败则直接返回fasle */ - private fun getElements(temp: Element?, rule: String): Elements { + fun consumeToAny(vararg seq:String): Boolean { - if (temp == null || rule.isEmpty()) return Elements() + start = pos - val elements = Elements() + while (!isEmpty) { - val sourceRule = SourceRule(rule) - val ruleAnalyzes = RuleAnalyzer(sourceRule.elementsRule) - val ruleStrS = ruleAnalyzes.splitRule("&&","||","%%") - - val elementsList = ArrayList() - if (sourceRule.isCss) { - for (ruleStr in ruleStrS) { - val tempS = temp.select(ruleStr) - elementsList.add(tempS) - if (tempS.size > 0 && ruleAnalyzes.elementsType == "||") { - break + for (s in seq) { + if (matches(s)) { + step = s.length //间隔数 + return true //匹配就返回 true } } - } else { - for (ruleStr in ruleStrS) { - //将原getElementsSingle函数调用的函数的部分代码内联过来,方便简化getElementsSingle函数 - - val rsRule = RuleAnalyzer(ruleStr) - - if( rsRule.peek() =='@' || rsRule.peek() < '!' ) rsRule.advance() // 修剪当前规则之前的"@"或者空白符 - - val rs = rsRule.splitRule("@") - - val el = if (rs.size > 1) { - val el = Elements() - el.add(temp) - for (rl in rs) { - val es = Elements() - for (et in el) { - es.addAll(getElements(et, rl)) - } - el.clear() - el.addAll(es) - } - el - }else getElementsSingle(temp,ruleStr) - elementsList.add(el) - if (el.size > 0 && ruleAnalyzes.elementsType == "||") { - break - } - } - } - if (elementsList.size > 0) { - if ("%%" == ruleAnalyzes.elementsType) { - for (i in 0 until elementsList[0].size) { - for (es in elementsList) { - if (i < es.size) { - elements.add(es[i]) - } - } - } - } else { - for (es in elementsList) { - elements.addAll(es) - } - } + pos++ //逐个试探 } - return elements - } - /** - * 1.支持阅读原有写法,':'分隔索引,!或.表示筛选方式,索引可为负数 - * - * 例如 tag.div.-1:10:2 或 tag.div!0:3 - * - * 2. 支持与jsonPath类似的[]索引写法 - * - * 格式形如 [it,it,。。。] 或 [!it,it,。。。] 其中[!开头表示筛选方式为排除,it为单个索引或区间。 - * - * 区间格式为 start:end 或 start:end:step,其中start为0可省略,end为-1可省略。 - * - * 索引,区间两端及间隔都支持负数 - * - * 例如 tag.div[-1, 3:-2:-10, 2] - * - * 特殊用法 tag.div[-1:0] 可在任意地方让列表反向 - * - * */ + pos = start //匹配失败,位置回退 - fun findIndexSet( rule:String ): IndexSet { - - val indexSet = IndexSet() - val rus = rule.trim{ it <= ' '} - - var len = rus.length - var curInt: Int? //当前数字 - var curMinus = false //当前数字是否为负 - val curList = mutableListOf() //当前数字区间 - var l = "" //暂存数字字符串 - - val head = rus.last() == ']' //是否为常规索引写法 - - if(head){ //常规索引写法[index...] - - len-- //跳过尾部']' - - while (len-- >= 0) { //逆向遍历,可以无前置规则 - - var rl = rus[len] - if (rl == ' ') continue //跳过空格 - - if (rl in '0'..'9') l += rl //将数值累接入临时字串中,遇到分界符才取出 - else if (rl == '-') curMinus = true - else { - - curInt = if (l.isEmpty()) null else if (curMinus) -l.toInt() else l.toInt() //当前数字 + return false + } - when (rl) { + /** + * 从剩余字串中拉出一个字符串,直到但不包括匹配序列(匹配参数列表中一项即为匹配),或剩余字串用完。 + * @param seq 匹配字符序列 + * @return 返回匹配位置 + */ + private fun findToAny(vararg seq:Char): Int { - ':' -> curList.add(curInt) //区间右端或区间间隔 + val start = pos //声明新变量记录临时起始位置,不更改类本身的起始位置 - else -> { + while (!isEmpty) { - //为保证查找顺序,区间和单个索引都添加到同一集合 - if(curList.isEmpty())indexSet.indexs.add(curInt!!) - else{ + for (s in seq) if(queue[pos] == s) return pos //匹配则返回位置 - //列表最后压入的是区间右端,若列表有两位则最先压入的是间隔 - indexSet.indexs.add( Triple(curInt, curList.last(), if(curList.size == 2) curList.first() else 1) ) + pos++ //逐个试探 - curList.clear() //重置临时列表,避免影响到下个区间的处理 + } - } + pos = start //匹配失败,位置回退 - if(rl == '!'){ - indexSet.split='!' - do{ rl = rus[--len] } while (len > 0 && rl == ' ')//跳过所有空格 - } + return -1 + } - if(rl == '[') return indexSet.apply { - beforeRule = rus.substring(0, len) - } //遇到索引边界,返回结果 + //其中js只要符合语法,就不用避开任何阅读关键字,自由发挥 + fun chompJsBalanced(f: ((Char) -> Boolean?) = { + when (it) { + '{' -> true //开始嵌套一层 + '}' -> false //闭合一层嵌套 + else -> null + } + } ): Boolean { + start = pos + var depth = 0 //嵌套深度 + var bracketsDepth = 0 //[]嵌套深度 + + var inSingleQuote = false //单引号 + var inDoubleQuote = false //双引号 + var inOtherQuote = false //js原始字串分隔字符 + var regex = false //正则 + var commit = false //单行注释 + var commits = false //多行注释 + + do { + if (isEmpty) break + var c = consume() + if (c != '\\') { //非转义字符 + if (c == '\'' && !commits && !commit && !regex && !inDoubleQuote && !inOtherQuote) inSingleQuote = !inSingleQuote //匹配具有语法功能的单引号 + else if (c == '"' && !commits && !commit && !regex && !inSingleQuote && !inOtherQuote) inDoubleQuote = !inDoubleQuote //匹配具有语法功能的双引号 + else if (c == '`' && !commits && !commit && !regex && !inSingleQuote && !inDoubleQuote) inOtherQuote = !inOtherQuote //匹配具有语法功能的'`' + else if (c == '/' && !commits && !commit && !regex && !inSingleQuote && !inDoubleQuote && !inOtherQuote) { //匹配注释或正则起点 + c = consume() + when(c){ + '/'->commit=true //匹配单行注释起点 + '*'->commits=true //匹配多行注释起点 + else ->regex=true //匹配正则起点 + } + } + else if(commits && c == '*') { //匹配多行注释终点 + c = consume() + if(c == '/')commits = false + } + else if(regex && c == '/') { //正则的终点或[]平衡 - if(rl != ',') break //非索引结构,跳出 + when (c) { + '/' -> regex = false//匹配正则终点 - } + //为了保证当open为( 且 close 为 )时,正则中[(]或[)]的合法性。故对[]这对在任何规则中都平衡的成对符号做匹配。 + // 注:正则里[(]、[)]、[{]、[}]都是合法的,所以只有[]必须平衡。 + '[' -> bracketsDepth++ //开始嵌套一层[] + ']' -> bracketsDepth-- //闭合一层嵌套[] } - l = "" //清空 - curMinus = false //重置 } - } - } else while (len-- >= 0) { //阅读原本写法,逆向遍历,可以无前置规则 - val rl = rus[len] - if (rl == ' ') continue //跳过空格 + if (commits || commit || regex || inSingleQuote || inDoubleQuote || inOtherQuote) continue //语法单元未匹配结束,直接进入下个循环 - if (rl in '0'..'9') l += rl //将数值累接入临时字串中,遇到分界符才取出 - else if (rl == '-') curMinus = true - else { + val fn = f(c) ?: continue + if (fn) depth++ else depth-- //嵌套或者闭合 - if(rl == '!' || rl == '.' || rl == ':') { //分隔符或起始符 + }else { //转义字符 + var next = consume() //拉出被转义字符 + if(commit && next == 'n') commit = false //匹配单行注释终点。当前为\,下个为n,表示换行 + else if (!commits && !commit && next == '\\') { + consume() //当前为\,下个为\,双重转义中"\\"表示转义字符本身,根据if条件"\\"字串不在注释中,则只能在字串或正则中 + next = consume() //拉出下个字符,因为在双重转义的字串或正则中,类似于 \\/ 这样的结构才是转义结构 + if(next == '\\')consume() //若为转义字符则继续拉出,因为双重转义中转义字符成对存在,即 \\\\ + } + } + } while (depth > 0 || bracketsDepth >0) //拉出全部符合js语法的字段 - indexSet.indexDefault.add(if (curMinus) -l.toInt() else l.toInt()) // 当前数字追加到列表 + if(depth > 0 || bracketsDepth >0) start = pos - if (rl != ':') return indexSet.apply { //rl == '!' || rl == '.' - split = rl - beforeRule = rus.substring(0, len) - } + return pos > start + } - }else break //非索引结构,跳出循环 + /** + * 在双重转义字串中拉出一个规则平衡组 + */ + fun chompRuleBalanced(open: Char = '[', close: Char = ']',f: ((Char) ->Boolean?)? = null ): Boolean { + start = pos + var depth = 0 //嵌套深度 + var otherDepth = 0 //其他对称符合嵌套深度 + + var inSingleQuote = false //单引号 + var inDoubleQuote = false //双引号 + + do { + if (isEmpty) break + val c = consume() + if (c != ESC) { //非转义字符 + if (c == '\'' && !inDoubleQuote) inSingleQuote = !inSingleQuote //匹配具有语法功能的单引号 + else if (c == '"' && !inSingleQuote) inDoubleQuote = !inDoubleQuote //匹配具有语法功能的双引号 + + if (inSingleQuote || inDoubleQuote) continue //语法单元未匹配结束,直接进入下个循环 + + if ( c == open )depth++ //开始嵌套一层 + else if ( c== close) depth-- //闭合一层嵌套 + else if(depth == 0 && f != null) { //处于默认嵌套中的非默认字符不需要平衡,仅depth为0时默认嵌套全部闭合,此字符才进行嵌套 + val fn = f(c) ?: continue + if (fn) otherDepth++ else otherDepth-- + } - l = "" //清空 - curMinus = false //重置 + }else { //转义字符 + var next = consume() //拉出被转义字符,匹配\/、\"、\'等 + if (next == ESC) { + consume() //当前为\,下个为\,双重转义中"\\"表示转义字符本身,根据语法特征当前字段在字串或正则中 + next = consume() //拉出下个字符,因为在双重转义的字串或正则中,类似于 \\/ 这样的结构才是转义结构 + if(next == ESC)consume() //若为转义字符则继续拉出,因为双重转义中转义字符成对存在,即 \\\\ + } } + } while (depth > 0 || otherDepth > 0) //拉出一个平衡字串 - } - - return indexSet.apply{ - split = ' ' - beforeRule = rus } //非索引格式 + return !(depth > 0 || otherDepth > 0) //平衡返回false,不平衡返回true } /** - * 获取Elements按照一个规则 + * 不用正则,不到最后不切片也不用中间变量存储,只在序列中标记当前查找字段的开头结尾,到返回时才切片,高效快速准确切割规则 + * 解决jsonPath自带的"&&"和"||"与阅读的规则冲突,以及规则正则或字符串中包含"&&"、"||"、"%%"、"@"导致的冲突 */ - private fun getElementsSingle(temp: Element, rule: String): Elements { + tailrec fun splitRule(vararg split: String): Array{ //首段匹配,elementsType为空 - var elements = Elements() + if(split.size == 1) { + elementsType = split[0] //设置分割字串 + step = elementsType.length //设置分隔符长度 + return splitRule(arrayOf()) //仅一个分隔字串时,直接二段解析更快 + }else if (!consumeToAny(* split)) return arrayOf(queue) //未找到分隔符 - val fi = findIndexSet(rule) //执行索引列表处理器 + val st = findToAny( '[','(' ) //查找筛选器 - val (filterType,ruleStr) = fi //获取操作类型及非索引部分的规则字串 + if(st == -1) { -// val rulePc = rulePcx[0].trim { it <= ' ' }.split(">") -// jsoup中,当前节点是参与选择的,tag.div 与 tag.div@tag.div 结果相同 -// 此处">"效果和“@”完全相同,且容易让人误解成选择子节点,实际并不是。以后不允许这种无意义的写法 + var rule = arrayOf(queue.substring(0, pos)) //压入分隔的首段规则到数组 - val rules = ruleStr.split(".") + elementsType = queue.substring(pos, pos + step) //设置组合类型 + pos += step //跳过分隔符 - elements.addAll( - if(ruleStr.isEmpty()) temp.children() //允许索引直接作为根元素,此时前置规则为空,效果与children相同 - else when (rules[0]) { - "children" -> temp.children() //允许索引直接作为根元素,此时前置规则为空,效果与children相同 - "class" -> temp.getElementsByClass(rules[1]) - "tag" -> temp.getElementsByTag(rules[1]) - "id" -> Collector.collect(Evaluator.Id(rules[1]), temp) - "text" -> temp.getElementsContainingOwnText(rules[1]) - else -> temp.select(ruleStr) - } ) + while (consumeToAny(* split)) { //循环切分规则压入数组 + rule += queue.substring(start, pos) + pos += step //跳过分隔符 + } - val indexSet = fi.getIndexs(elements.size) //传入元素数量,处理负数索引及索引越界问题,生成可用索引集合。 + rule += queue.substring(pos) //将剩余字段压入数组末尾 - if(filterType == '!'){ //排除 + return rule + } - for (pcInt in indexSet) elements[pcInt] = null + val rule = if(st >pos ){ //先匹配到st1pos,表明分隔字串不在选择器中,将选择器前分隔字串分隔的字段依次压入数组 - elements.removeAll(listOf(null)) //测试过,这样就行 + var rule = arrayOf(queue.substring(0, pos)) //压入分隔的首段规则到数组 - }else if(filterType == '.'){ //选择 + elementsType = queue.substring(pos, pos + step) //设置组合类型 + pos += step //跳过分隔符 - val es = Elements() + while (consumeToAny( * split ) && pos < st ) { //循环切分规则压入数组 + rule += queue.substring(start, pos) + pos += step //跳过分隔符 + } - for (pcInt in indexSet) es.add(elements[pcInt]) + rule - elements = es + }else null - } + pos = st //位置推移到筛选器处 + val next = if(queue[pos] == '[' ) ']' else ')' //平衡组末尾字符 - return elements - } + return if (rule == null) { //rule为空,首段未匹配完成 - /** - * 获取内容列表 - */ - private fun getResultList(ruleStr: String): List? { + if(!chompRuleBalanced(queue[pos],next)) throw Error(queue.substring(0, start)+"后未平衡") //拉出一个筛选器,不平衡则报错 + splitRule(* split) //递归调用首段匹配 - if (ruleStr.isEmpty()) return null + } else { - var elements = Elements() + val start0 = start //记录当前规则开头位置 + if(!chompRuleBalanced(queue[pos],next)) throw Error(queue.substring(0, start)+"后未平衡") //拉出一个筛选器,不平衡则报错 + start = start0 //筛选器的开头不是本段规则开头,故恢复开头设置 + splitRule(rule) //首段已匹配,但当前段匹配未完成,调用二段匹配 - elements.add(element) + } + + } - val rule = RuleAnalyzer(ruleStr) //创建解析 + @JvmName("splitRuleNext") + private tailrec fun splitRule(rules:Array): Array{ //二段匹配被调用,elementsType非空(已在首段赋值),直接按elementsType查找,比首段采用的方式更快 - while( rule.peek() =='@' || rule.peek() < '!' ) rule.advance() // 修剪当前规则之前的"@"或者空白符 + if (!consumeTo(elementsType,false)) return rules + queue.substring(start) //此处consumeTo(...)开始位置不是规则的开始位置,start沿用上次设置 - val rules = rule.splitRule("@") // 切割成列表 + val st = findToAny( '[','(' ) //查找筛选器 - val last = rules.size - 1 - for (i in 0 until last) { - val es = Elements() - for (elt in elements) { - es.addAll(getElementsSingle(elt, rules[i])) + if(st == -1) { + var rule = rules + queue.substring(start, pos) //压入本次分隔的首段规则到数组 + pos += step //跳过分隔符 + while (consumeTo(elementsType)) { //循环切分规则压入数组 + rule += queue.substring(start, pos) + pos += step //跳过分隔符 } - elements.clear() - elements = es + rule += queue.substring(pos) //将剩余字段压入数组末尾 + return rule } - return if (elements.isEmpty()) null else getResultLast(elements, rules[last]) - } - /** - * 根据最后一个规则获取内容 - */ - private fun getResultLast(elements: Elements, lastRule: String): List { - val textS = ArrayList() - try { - when (lastRule) { - "text" -> for (element in elements) { - textS.add(element.text()) - } - "textNodes" -> for (element in elements) { - val tn = arrayListOf() - val contentEs = element.textNodes() - for (item in contentEs) { - val temp = item.text().trim { it <= ' ' } - if (temp.isNotEmpty()) { - tn.add(temp) - } - } - textS.add(join("\n", tn)) - } - "ownText" -> for (element in elements) { - textS.add(element.ownText()) - } - "html" -> { - elements.select("script").remove() - elements.select("style").remove() - val html = elements.outerHtml() - textS.add(html) - } - "all" -> textS.add(elements.outerHtml()) - else -> for (element in elements) { + val rule = if(st > pos ){//先匹配到st1pos,表明分隔字串不在选择器中,将选择器前分隔字串分隔的字段依次压入数组 + var rule = rules + queue.substring(start, pos) //压入本次分隔的首段规则到数组 + pos += step //跳过分隔符 + while (consumeTo(elementsType) && pos < st) { //循环切分规则压入数组 + rule += queue.substring(start, pos) + pos += step //跳过分隔符 + } + rule + }else rules - val url = element.attr(lastRule) + pos = st //位置推移到筛选器处 + val next = if(queue[pos] == '[' ) ']' else ')' //平衡组末尾字符 - if(url.isEmpty() || textS.contains(url)) break + val start0 = start //记录当前规则开头位置 + if(!chompRuleBalanced(queue[pos],next)) throw Error(queue.substring(0, start)+"后未平衡") //拉出一个筛选器,不平衡时返回true,表示未平衡 + start = start0 //筛选器平衡,但筛选器的开头不是当前规则开头,故恢复开头设置 - textS.add(url) - } - } - } catch (e: Exception) { - e.printStackTrace() - } + return splitRule(rule) //递归匹配 - return textS } - data class IndexSet(var split:Char = '.', - var beforeRule:String = "", - val indexDefault:MutableList = mutableListOf(), - val indexs:MutableList = mutableListOf()){ - fun getIndexs(len:Int): MutableSet { + /** + * 替换内嵌规则 + * @param inner 起始标志,如{$. 或 {{ + * @param startStep 不属于规则部分的前置字符长度,如{$.中{不属于规则的组成部分,故startStep为1 + * @param endStep 不属于规则部分的后置字符长度,如}}长度为2 + * @param fr 查找到内嵌规则时,用于解析的函数 + * + * */ + fun innerRule( inner:String,startStep:Int = 1,endStep:Int = 1,fr:(String)->String?): String { - val indexSet = mutableSetOf() + val start0 = pos //规则匹配前起点 - val lastIndexs = (indexDefault.size - 1).takeIf { it !=-1 } ?: indexs.size -1 + val st = StringBuilder() + while (!isEmpty && consumeTo(inner)) { //拉取成功返回true,ruleAnalyzes里的字符序列索引变量pos后移相应位置,否则返回false,且isEmpty为true - if(indexs.isEmpty())for (ix in lastIndexs downTo 0 ){ //indexs为空,表明是非[]式索引,集合是逆向遍历插入的,所以这里也逆向遍历,好还原顺序 + val start1 = start //记录拉取前起点 - val it = indexDefault[ix] - if(it in 0 until len) indexSet.add(it) //将正数不越界的索引添加到集合 - else if(it < 0 && len >= -it) indexSet.add(it + len) //将负数不越界的索引添加到集合 + if (chompRuleBalanced {//拉出一个以[]为默认嵌套、以{}为补充嵌套的平衡字段 + when (it) { + '{' -> true + '}' -> false + else -> null + } + }) { + val frv= fr(currBalancedString(startStep,endStep)) + if(frv != null) { + + st.append(queue.substring(start1,start)+frv) //压入内嵌规则前的内容,及内嵌规则解析得到的字符串 + continue //获取内容成功,继续选择下个内嵌规则 - }else for (ix in lastIndexs downTo 0 ){ //indexs不空,表明是[]式索引,集合是逆向遍历插入的,所以这里也逆向遍历,好还原顺序 + } + } - if(indexs[ix] is Triple<*, *, *>){ //区间 + start = start1 //拉出字段不平衡,重置起点 + pos = start + inner.length //拉出字段不平衡,inner只是个普通字串,规则回退到开头,并跳到此inner后继续匹配 - val (startx, endx, stepx) = indexs[ix] as Triple //还原储存时的类型 + } - val start = if (startx == null) 0 //左端省略表示0 - else if (startx >= 0) if (startx < len) startx else len - 1 //右端越界,设置为最大索引 - else if (-startx <= len) len + startx /* 将负索引转正 */ else 0 //左端越界,设置为最小索引 + //匹配前起点与当前规则起点相同,证明无替换成功的内嵌规则,返回空字符串。否则返回替换后的字符串 + return if(start0 == start) "" else { + st.append(remainingString()) //压入剩余字符串 + st.toString() + } + } - val end = if (endx == null) len - 1 //右端省略表示 len - 1 - else if (endx >= 0) if (endx < len) endx else len - 1 //右端越界,设置为最大索引 - else if (-endx <= len) len + endx /* 将负索引转正 */ else 0 //左端越界,设置为最小索引 +// /** +// * 匹配并返回标签中的属性键字串(字母、数字、-、_、:) +// * @return 属性键字串 +// */ +// fun consumeAttributeKey(start:Int = pos): String { +// while (!isEmpty && (Character.isLetterOrDigit(queue[pos]) || matchesAny('-', '_', ':'))) pos++ +// return queue.substring(start, pos) +// } + +// fun splitRule(query:String,item:String = "other",listItem:String = "allInOne"):String{ +// +// val cuurItem = item //当前项类型,list->列表项 mulu->章节列表项 url->链接项 search->搜索链接项 find发现链接列表项 other->其他项 +// val cuurList = listItem//当前界面总列表项类型,allInOne,json,xml,kotin,java +// var Reverse = false //是否反转列表 +// +// consumeWhitespace() //消耗开头空白 +// var fisrt = consume() //拉出并消费首字符 +// +// when(item){ +// "search" -> +// "find" -> +// "mulu" -> if(fisrt == '-'){ +// Reverse=true //开启反转 +// consumeWhitespace() //拉出所有空白符 +// fisrt = consume() //首字符后移 +// } +// else -> +// +// } +// +// return query +// } - if (start == end || stepx >= len) { //两端相同,区间里只有一个数。或间隔过大,区间实际上仅有首位 + companion object { + /** + * 转义字符 + */ + private const val ESC = '\\' - indexSet.add(start) - continue + /** + * 阅读共有分隔字串起始部分 + * "##","@@","{{","{[","", "@js:" + */ + val splitList =arrayOf("##","@@","{{","{[","", "@js:") - } + /** + * 发现‘名称-链接’分隔字串 + * "::" + */ + const val splitListFaXian = "::" - val step = if (stepx > 0) stepx else if (-stepx < len) stepx + len else 1 //最小正数间隔为1 + /** + * 目录专有起始字符 + * "-" + */ + const val splitListMulu = "-" - //将区间展开到集合中,允许列表反向。 - indexSet.addAll(if (end > start) start..end step step else start downTo end step step) + /** + * 结果为元素列表的 all in one 模式起始字符 + * "+" + */ + const val splitListTongYi = "+" - }else{//单个索引 + /** + * 结果为元素列表的项的同规则组合结构 + * "||","&&","%%" + */ + val splitListReSplit = arrayOf("||","&&","%%") - val it = indexs[ix] as Int //还原储存时的类型 + /** + * js脚本结束字串 + * "" + */ + const val splitListEndJS = "" - if(it in 0 until len) indexSet.add(it) //将正数不越界的索引添加到集合 - else if(it < 0 && len >= -it) indexSet.add(it + len) //将负数不越界的索引添加到集合 + /** + *内嵌js结束字串 + * "}}" + */ + const val splitListEndInnerJS = "}}" - } + /** + * 内嵌规则结束字串 + * "]}" + */ + const val splitListEndInnerRule = "]}" - } + /** + * '[', ']', '(', ')','{','}' + */ + val splitListPublic = charArrayOf('[', ']', '(', ')','{','}') - return indexSet + /** + * '*',"/","//",":","::","@","|","@xpath:" + */ + val splitListXpath = arrayOf("*","/","//",":","::","@","|","@xpath:") - } + /** + * '*','$',".","..", "@json:" + */ + val splitListJson = arrayOf('*','$',".","..", "@json:") - } + /** + * '*',"+","~",".",",","|","@","@css:",":" + */ + val splitListCss = arrayOf('*',"+","~",".",",","|","@","@css:",":") + /** + * "-",".","!","@","@@" + */ + val splitListDefault = arrayOf("-",".","!","@","@@") - internal inner class SourceRule(ruleStr: String) { - var isCss = false - var elementsRule: String = if (ruleStr.startsWith("@CSS:", true)) { - isCss = true - ruleStr.substring(5).trim { it <= ' ' } - } else { - ruleStr - } } - }