Update RuleAnalyzer.kt

进一步简化 AnalyzeByJSoup 中的 data class ElementsSingle,尽量以共享变量代替传递变量。
pull/1108/head
bushixuanqi 4 years ago committed by GitHub
parent 0aa63a9c69
commit c5c72511b4
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  1. 24
      app/src/main/java/io/legado/app/model/analyzeRule/RuleAnalyzer.kt

@ -2,7 +2,7 @@ package io.legado.app.model.analyzeRule
//通用的规则切分处理 //通用的规则切分处理
class RuleAnalyzer(data: String) { class RuleAnalyzer(data: String, code:Boolean = false) {
private var queue: String = data //被处理字符串 private var queue: String = data //被处理字符串
private var pos = 0 //处理到的位置 private var pos = 0 //处理到的位置
@ -12,6 +12,8 @@ class RuleAnalyzer(data: String) {
private var startX = 0 //规则的开始 private var startX = 0 //规则的开始
private var step:Int = 0 //分割字符的长度 private var step:Int = 0 //分割字符的长度
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
var elementsType = "" var elementsType = ""
//当前平衡字段 //当前平衡字段
@ -195,7 +197,7 @@ class RuleAnalyzer(data: String) {
/** /**
* 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 * 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
*/ */
fun chompCodeBalanced(open: Char = '{', close: Char = '}'): Boolean { fun chompCodeBalanced(open: Char, close: Char): Boolean {
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 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
@ -234,9 +236,9 @@ class RuleAnalyzer(data: String) {
} }
/** /**
* 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 * 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
*/ */
fun chompRuleBalanced(open: Char = '[', close: Char = ']'): Boolean { fun chompRuleBalanced(open: Char, close: Char): Boolean {
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 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
var depth = 0 //嵌套深度 var depth = 0 //嵌套深度
@ -246,11 +248,14 @@ class RuleAnalyzer(data: String) {
do { do {
if (pos == queue.length) break if (pos == queue.length) break
val c = queue[pos++] val c = queue[pos++]
if (c == '\'' && !inDoubleQuote) inSingleQuote = !inSingleQuote //匹配具有语法功能的单引号 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 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 (inSingleQuote || inDoubleQuote) continue //语法单元未匹配结束,直接进入下个循环
else if( c=='\\' ){ //不在引号中的转义字符才将下个字符转义
pos++
continue
}
if ( c == open )depth++ //开始嵌套一层 if ( c == open )depth++ //开始嵌套一层
else if ( c== close) depth-- //闭合一层嵌套 else if ( c== close) depth-- //闭合一层嵌套
@ -331,7 +336,7 @@ class RuleAnalyzer(data: String) {
pos = st //位置推移到筛选器处 pos = st //位置推移到筛选器处
val next = if (queue[pos] == '[') ']' else ')' //平衡组末尾字符 val next = if (queue[pos] == '[') ']' else ')' //平衡组末尾字符
if (!chompRuleBalanced(queue[pos], next)) throw Error( if (!chompBalanced(queue[pos], next)) throw Error(
queue.substring( queue.substring(
0, 0,
start start
@ -392,7 +397,7 @@ class RuleAnalyzer(data: String) {
pos = st //位置推移到筛选器处 pos = st //位置推移到筛选器处
val next = if (queue[pos] == '[') ']' else ')' //平衡组末尾字符 val next = if (queue[pos] == '[') ']' else ')' //平衡组末尾字符
if (!chompRuleBalanced(queue[pos], next)) throw Error( if (!chompBalanced(queue[pos], next)) throw Error(
queue.substring( queue.substring(
0, 0,
start start
@ -427,7 +432,7 @@ class RuleAnalyzer(data: String) {
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 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
val posPre = pos //记录上次结束位置 val posPre = pos //记录上次结束位置
if (chompCodeBalanced()) { if (chompBalanced('{', '}')) {
val frv= fr(currBalancedString(startStep,endStep)) val frv= fr(currBalancedString(startStep,endStep))
if(frv != null) { if(frv != null) {
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 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
@ -559,5 +564,4 @@ class RuleAnalyzer(data: String) {
*/ */
val splitListDefault = arrayOf("-",".","!","@","@@") val splitListDefault = arrayOf("-",".","!","@","@@")
} }}
}

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