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- <a href="../../index.html">All files</a> / <a href="index.html">coa/lib</a> coaparam.js
- </h1>
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- <div class='fl pad1y space-right2'>
- <span class="strong">51.61% </span>
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- <span class="strong">55.56% </span>
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- <span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">'use strict';
-
- const fs = require('fs');
-
- const CoaObject = require('./coaobject');
-
- /**
- * COA Parameter
- *
- * Base class for options and arguments
- *
- * --------|-----|-----|-----
- * | Cmd | Opt | Arg
- * --------|-----|-----|-----
- * arr | | ✓ | ✓
- * req | | ✓ | ✓
- * val | | ✓ | ✓
- * def | | ✓ | ✓
- * input | | ✓ | ✓
- * output | | ✓ | ✓
- *
- * @class CoaParam
- * @extends CoaObject
- */
- module.exports = class CoaParam extends CoaObject {
- constructor(cmd) {
- super(cmd);
-
- this._arr = false;
- this._req = false;
- this._val = undefined;
- this._def = undefined;
- }
-
- /**
- * Makes a param accepts multiple values.
- * Otherwise, the value will be used by the latter passed.
- *
- * @returns {COA.CoaParam} - this instance (for chainability)
- */
- arr() {
- this._arr = true;
- return this;
- }
-
- /**
- * Makes a param required.
- *
- * @returns {COA.CoaParam} - this instance (for chainability)
- */
- req() {
- this._req = true;
- return this;
- }
-
- /**
- * Set a validation (or value) function for param.
- * Value from command line passes through before becoming available from API.
- * Using for validation and convertion simple types to any values.
- *
- * @param {Function} val - validating function,
- * invoked in the context of option instance
- * and has one parameter with value from command line.
- * @returns {COA.CoaParam} - this instance (for chainability)
- */
- val(val) {
- this._val = val;
- return this;
- }
-
- /**
- * Set a default value for param.
- * Default value passed through validation function as ordinary value.
- *
- * @param {*} def - default value of function generator
- * @returns {COA.CoaParam} - this instance (for chainability)
- */
- def(def) {
- this._def = def;
- return this;
- }
-
- /**
- * Make option value inputting stream.
- * It's add useful validation and shortcut for STDIN.
- *
- * @returns {COA.CoaParam} - this instance (for chainability)
- */
- <span class="fstat-no" title="function not covered" > in</span>put() {
- <span class="cstat-no" title="statement not covered" > process.stdin.pause();</span>
- <span class="cstat-no" title="statement not covered" > return this</span>
- .def(process.stdin)
- .val(<span class="fstat-no" title="function not covered" >fu</span>nction(v) {
- <span class="cstat-no" title="statement not covered" > if(typeof v !== 'string')</span>
- <span class="cstat-no" title="statement not covered" > return v;</span>
-
- <span class="cstat-no" title="statement not covered" > if(v === '-')</span>
- <span class="cstat-no" title="statement not covered" > return process.stdin;</span>
-
- const s = <span class="cstat-no" title="statement not covered" >fs.createReadStream(v, { encoding : 'utf8' });</span>
- <span class="cstat-no" title="statement not covered" > s.pause();</span>
- <span class="cstat-no" title="statement not covered" > return s;</span>
- });
- }
-
- /**
- * Make option value outputing stream.
- * It's add useful validation and shortcut for STDOUT.
- *
- * @returns {COA.CoaParam} - this instance (for chainability)
- */
- <span class="fstat-no" title="function not covered" > ou</span>tput() {
- <span class="cstat-no" title="statement not covered" > return this</span>
- .def(process.stdout)
- .val(<span class="fstat-no" title="function not covered" >fu</span>nction(v) {
- <span class="cstat-no" title="statement not covered" > if(typeof v !== 'string')</span>
- <span class="cstat-no" title="statement not covered" > return v;</span>
-
- <span class="cstat-no" title="statement not covered" > if(v === '-')</span>
- <span class="cstat-no" title="statement not covered" > return process.stdout;</span>
-
- <span class="cstat-no" title="statement not covered" > return fs.createWriteStream(v, { encoding : 'utf8' });</span>
- });
- }
- };
- </pre></td></tr>
- </table></pre>
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