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<a href="../../index.html">All files</a> / <a href="index.html">coa/lib</a> coaparam.js
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<div class='clearfix'>
<div class='fl pad1y space-right2'>
<span class="strong">51.61% </span>
<span class="quiet">Statements</span>
<span class='fraction'>16/31</span>
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<span class="strong">0% </span>
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<span class='fraction'>0/8</span>
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<div class='fl pad1y space-right2'>
<span class="strong">55.56% </span>
<span class="quiet">Functions</span>
<span class='fraction'>5/9</span>
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<div class='fl pad1y space-right2'>
<span class="strong">51.61% </span>
<span class="quiet">Lines</span>
<span class='fraction'>16/31</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>
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