100 lines
2.7 KiB
TypeScript
100 lines
2.7 KiB
TypeScript
import RuleInterface from "./RuleInterface";
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import {dealFileName} from "./RuleInterface";
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import FileObj from "../../vo/FileObj";
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import path from 'path';
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export default class DeleteRule implements RuleInterface {
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/**
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* 类别：deletePart:部分删除，deleteAll:全部删除
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*/
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type: string;
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/**
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* 部分删除时的开始信息
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*/
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start: DeleteRuleItem;
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/**
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* 部分删除时的结束信息
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*/
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end: DeleteRuleItem;
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/**
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* 忽略拓展名，true:忽略，false：不忽略
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*/
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ignorePostfix: boolean;
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/*
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* 是否区分大小写
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*/
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regI: boolean;
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constructor(data: any) {
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this.type = data.type;
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this.regI = data.regI != undefined && data.regI;
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this.start = new DeleteRuleItem(data.start, this.regI);
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this.end = new DeleteRuleItem(data.end, this.regI);
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this.ignorePostfix = data.ignorePostfix;
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}
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deal(file: FileObj): void {
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let target = "";
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if (this.type === 'deleteAll') {
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target = "";
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} else {
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let str = file.realName + (this.ignorePostfix ? "" : file.expandName);
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let startIndex = this.start.calIndex(str, false);
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let endIndex = this.end.calIndex(str, true);
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if (startIndex < 0 || endIndex < 0 || startIndex > endIndex) {
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return;
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}
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str = str.substring(0, startIndex) + str.substring(endIndex + 1);
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target = str;
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}
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dealFileName(file, target, this.ignorePostfix);
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}
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}
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class DeleteRuleItem {
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/**
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* location:位置，text:文本，end:直到末尾
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*/
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type: string;
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/**
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* 对应的值
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*/
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value: string;
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/**
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* 正则对象
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*/
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reg: RegExp;
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constructor(data: any, regI: boolean) {
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this.type = data.type;
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this.value = data.value;
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if (this.type === 'reg') {
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this.reg = regI ? new RegExp(this.value) : new RegExp(this.value, 'i');
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}
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}
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/**
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* 计算位置
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* @param str 字符串
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* @param end 是否末尾计算
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*/
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calIndex(str: string, end: boolean): number {
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if (this.type === 'location') {
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let val = parseInt(this.value);
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return val > 0 ? val - 1 : str.length + val;
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} else if (this.type === 'text') {
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let index = str.indexOf(this.value);
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return index + (end ? this.value.length - 1 : 0);
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} else if (this.type === 'end') {
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return str.length - 1;
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} else if (this.type === 'reg') {
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let res = this.reg.exec(str);
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return res == null ? -1 : (res.index + (end ? res[0].length - 1 : 0));
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}
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return -1;
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}
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}
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