@kui-shell/plugin-core-support/mdist/lib/cmds/echo.js

Kui plugin offering core extensions such as help and screenshot commands

/*
 * Copyright 2018 The Kubernetes Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
/** Expand env vars */
function expand(expr, env = process.env) {
    return __awaiter(this, void 0, void 0, function* () {
        const { expandHomeDir } = yield import('@kui-shell/core/mdist/api/Util');
        return typeof expr !== 'string'
            ? expr.toString()
            : expr.replace(/\${?([^}/\s]+)}?/g, (_, p1) => expandHomeDir(typeof env[p1] !== 'undefined' ? env[p1] : _));
    });
}
function kuiecho(args) {
    return __awaiter(this, void 0, void 0, function* () {
        return (Promise.all(args.argvNoOptions.slice(1).map(_ => expand(_, args.execOptions.env))).then(_ => _.join(' ')) || true);
    });
}
export function echo(args) {
    return __awaiter(this, void 0, void 0, function* () {
        const { inBrowser, hasProxy } = yield import('@kui-shell/core/mdist/api/Capabilities');
        if (inBrowser() && !hasProxy()) {
            return kuiecho(args);
        }
        else {
            const { doExecWithPty } = yield import('@kui-shell/plugin-bash-like');
            return doExecWithPty(args);
        }
    });
}
export default (registrar) => {
    // For debugging the command line parser. This avoids the PTY.
    registrar.listen('/kuiecho', kuiecho);
    // and, in a browser deployment without a backing proxy (and hence
    // without PTY support), we should also register as a handler for
    // `echo`
    registrar.listen('/echo', echo);
};
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