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@ -2,7 +2,7 @@ package io.legado.app.model.analyzeRule |
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//通用的规则切分处理 |
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//通用的规则切分处理 |
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class RuleAnalyzer(data: String) { |
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class RuleAnalyzer(data: String, code:Boolean = false) { |
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private var queue: String = data //被处理字符串 |
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private var queue: String = data //被处理字符串 |
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private var pos = 0 //处理到的位置 |
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private var pos = 0 //处理到的位置 |
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@ -12,6 +12,8 @@ class RuleAnalyzer(data: String) { |
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private var startX = 0 //规则的开始 |
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private var startX = 0 //规则的开始 |
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private var step:Int = 0 //分割字符的长度 |
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private var step:Int = 0 //分割字符的长度 |
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val chompBalanced = if(code) ::chompCodeBalanced else ::chompRuleBalanced //设置平衡组函数,json或JavaScript时设置成chompCodeBalanced,否则为chompRuleBalanced |
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var elementsType = "" |
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var elementsType = "" |
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//当前平衡字段 |
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//当前平衡字段 |
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@ -195,7 +197,7 @@ class RuleAnalyzer(data: String) { |
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/** |
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/** |
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* 拉出一个代码平衡组,存在转义文本,没有实体字符,通常以{}作为模块 |
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* 拉出一个代码平衡组,存在转义文本,没有实体字符,通常以{}作为模块 |
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*/ |
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*/ |
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fun chompCodeBalanced(open: Char = '{', close: Char = '}'): Boolean { |
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fun chompCodeBalanced(open: Char, close: Char): Boolean { |
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var pos = pos //声明临时变量记录匹配位置,匹配成功后才同步到类的pos |
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var pos = pos //声明临时变量记录匹配位置,匹配成功后才同步到类的pos |
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@ -234,9 +236,9 @@ class RuleAnalyzer(data: String) { |
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} |
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} |
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/** |
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/** |
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* 拉出一个规则平衡组,没有转义文本,有实体字符,通常以[]作为选择器 |
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* 拉出一个规则平衡组,经过仔细测试xpath和jsoup中,引号内转义字符无效。 |
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*/ |
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*/ |
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fun chompRuleBalanced(open: Char = '[', close: Char = ']'): Boolean { |
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fun chompRuleBalanced(open: Char, close: Char): Boolean { |
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var pos = pos //声明临时变量记录匹配位置,匹配成功后才同步到类的pos |
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var pos = pos //声明临时变量记录匹配位置,匹配成功后才同步到类的pos |
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var depth = 0 //嵌套深度 |
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var depth = 0 //嵌套深度 |
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@ -246,11 +248,14 @@ class RuleAnalyzer(data: String) { |
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do { |
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do { |
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if (pos == queue.length) break |
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if (pos == queue.length) break |
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val c = queue[pos++] |
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val c = queue[pos++] |
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if (c == '\'' && !inDoubleQuote) inSingleQuote = !inSingleQuote //匹配具有语法功能的单引号 |
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if (c == '\'' && !inDoubleQuote) inSingleQuote = !inSingleQuote //匹配具有语法功能的单引号 |
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else if (c == '"' && !inSingleQuote) inDoubleQuote = !inDoubleQuote //匹配具有语法功能的双引号 |
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else if (c == '"' && !inSingleQuote) inDoubleQuote = !inDoubleQuote //匹配具有语法功能的双引号 |
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if (inSingleQuote || inDoubleQuote) continue //语法单元未匹配结束,直接进入下个循环 |
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if (inSingleQuote || inDoubleQuote) continue //语法单元未匹配结束,直接进入下个循环 |
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else if( c=='\\' ){ //不在引号中的转义字符才将下个字符转义 |
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pos++ |
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continue |
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} |
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if ( c == open )depth++ //开始嵌套一层 |
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if ( c == open )depth++ //开始嵌套一层 |
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else if ( c== close) depth-- //闭合一层嵌套 |
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else if ( c== close) depth-- //闭合一层嵌套 |
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@ -261,13 +266,13 @@ class RuleAnalyzer(data: String) { |
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this.pos = pos //同步位置 |
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this.pos = pos //同步位置 |
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true |
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true |
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} |
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} |
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} |
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} |
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/** |
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/** |
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* 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 |
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* 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 |
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* 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 |
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* 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 |
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*/ |
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*/ |
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tailrec fun splitRule(vararg split: String): Array<String>{ //首段匹配,elementsType为空 |
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tailrec fun splitRule(vararg split: String): Array<String>{ //首段匹配,elementsType为空 |
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if(split.size == 1) { |
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if(split.size == 1) { |
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elementsType = split[0] //设置分割字串 |
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elementsType = split[0] //设置分割字串 |
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@ -331,7 +336,7 @@ class RuleAnalyzer(data: String) { |
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pos = st //位置推移到筛选器处 |
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pos = st //位置推移到筛选器处 |
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val next = if (queue[pos] == '[') ']' else ')' //平衡组末尾字符 |
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val next = if (queue[pos] == '[') ']' else ')' //平衡组末尾字符 |
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if (!chompRuleBalanced(queue[pos], next)) throw Error( |
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if (!chompBalanced(queue[pos], next)) throw Error( |
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queue.substring( |
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queue.substring( |
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0, |
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0, |
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start |
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start |
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@ -343,10 +348,10 @@ class RuleAnalyzer(data: String) { |
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start = pos //设置开始查找筛选器位置的起始位置 |
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start = pos //设置开始查找筛选器位置的起始位置 |
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return splitRule(* split) //递归调用首段匹配 |
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return splitRule(* split) //递归调用首段匹配 |
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} |
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} |
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@JvmName("splitRuleNext") |
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@JvmName("splitRuleNext") |
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private tailrec fun splitRule(): Array<String>{ //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 |
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private tailrec fun splitRule(): Array<String>{ //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 |
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val end = pos //记录分隔位置 |
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val end = pos //记录分隔位置 |
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pos = start //重回开始,启动另一种查找 |
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pos = start //重回开始,启动另一种查找 |
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@ -392,7 +397,7 @@ class RuleAnalyzer(data: String) { |
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pos = st //位置推移到筛选器处 |
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pos = st //位置推移到筛选器处 |
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val next = if (queue[pos] == '[') ']' else ')' //平衡组末尾字符 |
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val next = if (queue[pos] == '[') ']' else ')' //平衡组末尾字符 |
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if (!chompRuleBalanced(queue[pos], next)) throw Error( |
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if (!chompBalanced(queue[pos], next)) throw Error( |
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queue.substring( |
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queue.substring( |
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0, |
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0, |
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start |
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start |
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@ -408,10 +413,10 @@ class RuleAnalyzer(data: String) { |
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rule |
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rule |
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}else splitRule() //递归匹配 |
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}else splitRule() //递归匹配 |
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} |
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} |
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/** |
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/** |
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* 替换内嵌规则 |
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* 替换内嵌规则 |
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* @param inner 起始标志,如{$. 或 {{ |
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* @param inner 起始标志,如{$. 或 {{ |
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* @param startStep 不属于规则部分的前置字符长度,如{$.中{不属于规则的组成部分,故startStep为1 |
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* @param startStep 不属于规则部分的前置字符长度,如{$.中{不属于规则的组成部分,故startStep为1 |
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@ -419,7 +424,7 @@ class RuleAnalyzer(data: String) { |
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* @param fr 查找到内嵌规则时,用于解析的函数 |
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* @param fr 查找到内嵌规则时,用于解析的函数 |
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* |
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* |
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* */ |
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* */ |
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fun innerRule( inner:String,startStep:Int = 1,endStep:Int = 1,fr:(String)->String?): String { |
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fun innerRule( inner:String,startStep:Int = 1,endStep:Int = 1,fr:(String)->String?): String { |
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val start0 = pos //规则匹配前起点 |
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val start0 = pos //规则匹配前起点 |
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@ -427,7 +432,7 @@ class RuleAnalyzer(data: String) { |
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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 |
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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 |
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val posPre = pos //记录上次结束位置 |
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val posPre = pos //记录上次结束位置 |
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if (chompCodeBalanced()) { |
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if (chompBalanced('{', '}')) { |
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val frv= fr(currBalancedString(startStep,endStep)) |
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val frv= fr(currBalancedString(startStep,endStep)) |
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if(frv != null) { |
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if(frv != null) { |
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st.append(queue.substring(start,posPre)+frv) //压入内嵌规则前的内容,及内嵌规则解析得到的字符串 |
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st.append(queue.substring(start,posPre)+frv) //压入内嵌规则前的内容,及内嵌规则解析得到的字符串 |
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@ -445,7 +450,7 @@ class RuleAnalyzer(data: String) { |
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st.append(remainingString()) //压入剩余字符串 |
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st.append(remainingString()) //压入剩余字符串 |
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st.toString() |
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st.toString() |
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} |
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} |
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} |
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} |
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// /** |
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// /** |
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// * 匹配并返回标签中的属性键字串(字母、数字、-、_、:) |
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// * 匹配并返回标签中的属性键字串(字母、数字、-、_、:) |
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@ -480,7 +485,7 @@ class RuleAnalyzer(data: String) { |
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// return query |
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// return query |
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// } |
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// } |
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companion object { |
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companion object { |
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/** |
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/** |
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* 转义字符 |
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* 转义字符 |
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*/ |
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*/ |
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@ -559,5 +564,4 @@ class RuleAnalyzer(data: String) { |
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*/ |
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*/ |
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val splitListDefault = arrayOf("-",".","!","@","@@") |
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val splitListDefault = arrayOf("-",".","!","@","@@") |
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} |
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}} |
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} |
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