89 lines
2.8 KiB
Kotlin
89 lines
2.8 KiB
Kotlin
package io.legato.kazusa.help
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@Suppress("RegExpRedundantEscape")
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object RuleComplete {
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// 需要补全
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private val needComplete = Regex(
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"""(?<!(@|/|^|[|%&]{2})(attr|text|ownText|textNodes|href|content|html|alt|all|value|src)(\(\))?)(?<seq>\&{2}|%%|\|{2}|$)"""
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)
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// 不能补全 存在js/json/{{xx}}的复杂情况
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private val notComplete = Regex("""^:|^##|\{\{|@js:|<js>|@Json:|\$\.""")
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// 修正从图片获取信息
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private val fixImgInfo =
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Regex("""(?<=(^|tag\.|[\+/@>~| &]))img(?<at>(\[@?.+\]|\.[-\w]+)?)[@/]+text(\(\))?(?<seq>\&{2}|%%|\|{2}|$)""")
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private val isXpath = Regex("^//|^@Xpath:")
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/**
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* 对简单规则进行补全，简化部分书源规则的编写
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* 对JSOUP/XPath/CSS规则生效
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* @author 希弥
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* @return 补全后的规则 或 原规则
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* @param rules 需要补全的规则
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* @param preRule 预处理规则或列表规则
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* @param type 补全结果的类型，可选的值有:
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* 1 文字(默认)
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* 2 链接
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* 3 图片
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*/
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fun autoComplete(
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rules: String?,
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preRule: String? = null,
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type: Int = 1
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): String? {
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if (rules.isNullOrEmpty() || rules.contains(notComplete) || preRule?.contains(notComplete) == true) {
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return rules
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}
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/** 尾部##分割的正则或由,分割的参数 */
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val tailStr: String
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/** 分割字符 */
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val splitStr: String
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/** 用于获取文字时添加的规则 */
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val textRule: String
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/** 用于获取链接时添加的规则 */
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val linkRule: String
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/** 用于获取图片时添加的规则 */
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val imgRule: String
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/** 用于获取图片alt属性时添加的规则 */
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val imgText: String
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// 分离尾部规则
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val regexSplit = rules.split("""##|,\{""".toRegex(), 2)
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val cleanedRule = regexSplit[0]
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if (regexSplit.size > 1) {
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splitStr = """##|,\{""".toRegex().find(rules)?.value ?: ""
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tailStr = splitStr + regexSplit[1]
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} else {
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tailStr = ""
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}
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if (cleanedRule.contains(isXpath)) {
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textRule = "//text()\${seq}"
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linkRule = "//@href\${seq}"
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imgRule = "//@src\${seq}"
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imgText = "img\${at}/@alt\${seq}"
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} else {
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textRule = "@text\${seq}"
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linkRule = "@href\${seq}"
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imgRule = "@src\${seq}"
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imgText = "img\${at}@alt\${seq}"
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}
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return when (type) {
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1 -> needComplete.replace(cleanedRule, textRule).replace(fixImgInfo, imgText) + tailStr
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2 -> needComplete.replace(cleanedRule, linkRule) + tailStr
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3 -> needComplete.replace(cleanedRule, imgRule) + tailStr
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else -> rules
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}
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}
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}
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