78 lines
2.1 KiB
JavaScript
78 lines
2.1 KiB
JavaScript
module.exports = class CliCmdLine {
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/**
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* 带值的命令格式
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* @param parser 解析器
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* @param cmdLine 命令描述格式
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* @param flags 标记
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* @param params 参数
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* @param position 位置参数
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*/
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constructor(parser, cmdLine, flags, params, position) {
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this.parser = parser
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this.cmdline = cmdLine
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this.flags = new Set([])
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this.params = {}
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let i = 0;
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for ( let pname in cmdLine.params ) {
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let param = cmdLine.params[pname];
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if ( param.isFlag ) {
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if ( param.needValue ){
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if ( params[pname] ) {
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this.params[pname] = params[pname]
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} else {
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if ( ! param.isOptional ) {
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throw "命令解析错误，缺少必填标记参数。" + pname
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}
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}
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} else {
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if ( flags.has(pname) ) {
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this.flags.add( pname )
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} else {
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if ( ! param.isOptional ) {
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throw "命令解析错误，缺少必填标记。" + pname
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}
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}
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}
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} else {
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if ( i < position.length ) {
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this.params[ pname ] = position[ i++ ] ;
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} else {
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if ( ! param.isOptional ) {
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throw "命令解析错误，缺少必填位置参数。" + pname;
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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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* 是否已经绑定了回调函数？
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*/
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canEval(){
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return this.parser.canEval( this )
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}
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async eval(params){
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return this.parser.eval( this )
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}
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getParamValue(name, def){
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if ( name.startsWith("--") ) {
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name = name.substring(2);
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}
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let v = this.params[ name ];
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if ( null == v ) {
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return def
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} else {
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return v;
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}
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}
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hasFlag(name){
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return this.flags.has(name)
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}
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} |