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  4. <title>Code coverage report for coa/lib/completion.js</title>
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  18. <h1>
  19. <a href="../../index.html">All files</a> / <a href="index.html">coa/lib</a> completion.js
  20. </h1>
  21. <div class='clearfix'>
  22. <div class='fl pad1y space-right2'>
  23. <span class="strong">11.27% </span>
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  398. <span class="cline-any cline-neutral">&nbsp;</span></td><td class="text"><pre class="prettyprint lang-js">'use strict';
  399. &nbsp;
  400. const constants = require('constants');
  401. const fs = require('fs');
  402. const path = require('path');
  403. &nbsp;
  404. const Q = require('q');
  405. &nbsp;
  406. const shell = require('./shell');
  407. const escape = shell.escape;
  408. const unescape = shell.unescape;
  409. &nbsp;
  410. /**
  411. * Most of the code adopted from the npm package shell completion code.
  412. * See https://github.com/isaacs/npm/blob/master/lib/completion.js
  413. *
  414. * @returns {COA.CoaObject}
  415. */
  416. module.exports = function <span class="fstat-no" title="function not covered" >completion(</span>) {
  417. <span class="cstat-no" title="statement not covered" > return this</span>
  418. .title('Shell completion')
  419. .helpful()
  420. .arg()
  421. .name('raw')
  422. .title('Completion words')
  423. .arr()
  424. .end()
  425. .act(<span class="fstat-no" title="function not covered" >(o</span>pts, args) =&gt; {
  426. <span class="cstat-no" title="statement not covered" > if(process.platform === 'win32') {</span>
  427. const e = <span class="cstat-no" title="statement not covered" >new Error('shell completion not supported on windows');</span>
  428. <span class="cstat-no" title="statement not covered" > e.code = 'ENOTSUP';</span>
  429. <span class="cstat-no" title="statement not covered" > e.errno = constants.ENOTSUP;</span>
  430. <span class="cstat-no" title="statement not covered" > return this.reject(e);</span>
  431. }
  432. &nbsp;
  433. // if the COMP_* isn't in the env, then just dump the script
  434. <span class="cstat-no" title="statement not covered" > if((process.env.COMP_CWORD == null)</span>
  435. || (process.env.COMP_LINE == null)
  436. || (process.env.COMP_POINT == null)) {
  437. <span class="cstat-no" title="statement not covered" > return dumpScript(this._cmd._name);</span>
  438. }
  439. &nbsp;
  440. <span class="cstat-no" title="statement not covered" > console.error('COMP_LINE: %s', process.env.COMP_LINE);</span>
  441. <span class="cstat-no" title="statement not covered" > console.error('COMP_CWORD: %s', process.env.COMP_CWORD);</span>
  442. <span class="cstat-no" title="statement not covered" > console.error('COMP_POINT: %s', process.env.COMP_POINT);</span>
  443. <span class="cstat-no" title="statement not covered" > console.error('args: %j', args.raw);</span>
  444. &nbsp;
  445. // completion opts
  446. <span class="cstat-no" title="statement not covered" > opts = getOpts(args.raw);</span>
  447. &nbsp;
  448. // cmd
  449. const parsed = <span class="cstat-no" title="statement not covered" >this._cmd._parseCmd(opts.partialWords);</span>
  450. <span class="cstat-no" title="statement not covered" > return Q.when(complete(parsed.cmd, parsed.opts), <span class="fstat-no" title="function not covered" >(c</span>ompls) =&gt; {</span>
  451. <span class="cstat-no" title="statement not covered" > console.error('filtered: %j', compls);</span>
  452. <span class="cstat-no" title="statement not covered" > return console.log(compls.map(escape).join('\n'));</span>
  453. });
  454. });
  455. };
  456. &nbsp;
  457. function <span class="fstat-no" title="function not covered" >dumpScript(</span>name) {
  458. const defer = <span class="cstat-no" title="statement not covered" >Q.defer();</span>
  459. &nbsp;
  460. <span class="cstat-no" title="statement not covered" > fs.readFile(path.resolve(__dirname, 'completion.sh'), 'utf8', <span class="fstat-no" title="function not covered" >fu</span>nction(err, d) {</span>
  461. <span class="cstat-no" title="statement not covered" > if(err) <span class="cstat-no" title="statement not covered" >return defer.reject(err);</span></span>
  462. <span class="cstat-no" title="statement not covered" > d = d.replace(/{{cmd}}/g, path.basename(name)).replace(/^\#\!.*?\n/, '');</span>
  463. &nbsp;
  464. <span class="cstat-no" title="statement not covered" > process.stdout.on('error', onError);</span>
  465. <span class="cstat-no" title="statement not covered" > process.stdout.write(d, <span class="fstat-no" title="function not covered" >()</span> =&gt; <span class="cstat-no" title="statement not covered" >defer.resolve())</span>;</span>
  466. });
  467. &nbsp;
  468. <span class="cstat-no" title="statement not covered" > return defer.promise;</span>
  469. &nbsp;
  470. function <span class="fstat-no" title="function not covered" >onError(</span>err) {
  471. // Darwin is a real dick sometimes.
  472. //
  473. // This is necessary because the "source" or "." program in
  474. // bash on OS X closes its file argument before reading
  475. // from it, meaning that you get exactly 1 write, which will
  476. // work most of the time, and will always raise an EPIPE.
  477. //
  478. // Really, one should not be tossing away EPIPE errors, or any
  479. // errors, so casually. But, without this, `. &lt;(cmd completion)`
  480. // can never ever work on OS X.
  481. <span class="cstat-no" title="statement not covered" > if(err.errno !== constants.EPIPE) <span class="cstat-no" title="statement not covered" >return defer.reject(err);</span></span>
  482. <span class="cstat-no" title="statement not covered" > process.stdout.removeListener('error', onError);</span>
  483. <span class="cstat-no" title="statement not covered" > return defer.resolve();</span>
  484. }
  485. }
  486. &nbsp;
  487. function <span class="fstat-no" title="function not covered" >getOpts(</span>argv) {
  488. // get the partial line and partial word, if the point isn't at the end
  489. // ie, tabbing at: cmd foo b|ar
  490. const line = <span class="cstat-no" title="statement not covered" >process.env.COMP_LINE;</span>
  491. const w = <span class="cstat-no" title="statement not covered" >+process.env.COMP_CWORD;</span>
  492. const point = <span class="cstat-no" title="statement not covered" >+process.env.COMP_POINT;</span>
  493. const words = <span class="cstat-no" title="statement not covered" >argv.map(unescape);</span>
  494. const word = <span class="cstat-no" title="statement not covered" >words[w];</span>
  495. const partialLine = <span class="cstat-no" title="statement not covered" >line.substr(0, point);</span>
  496. const partialWords = <span class="cstat-no" title="statement not covered" >words.slice(0, w);</span>
  497. &nbsp;
  498. // figure out where in that last word the point is
  499. let partialWord = <span class="cstat-no" title="statement not covered" >argv[w] || '';</span>
  500. let i = <span class="cstat-no" title="statement not covered" >partialWord.length;</span>
  501. <span class="cstat-no" title="statement not covered" > while(partialWord.substr(0, i) !== partialLine.substr(-1 * i) &amp;&amp; i &gt; 0) <span class="cstat-no" title="statement not covered" >i--;</span></span>
  502. &nbsp;
  503. <span class="cstat-no" title="statement not covered" > partialWord = unescape(partialWord.substr(0, i));</span>
  504. <span class="cstat-no" title="statement not covered" > partialWord &amp;&amp; partialWords.push(partialWord);</span>
  505. &nbsp;
  506. <span class="cstat-no" title="statement not covered" > return {</span>
  507. line,
  508. w,
  509. point,
  510. words,
  511. word,
  512. partialLine,
  513. partialWords,
  514. partialWord
  515. };
  516. }
  517. &nbsp;
  518. function <span class="fstat-no" title="function not covered" >complete(</span>cmd, opts) {
  519. let optWord, optPrefix,
  520. compls = <span class="cstat-no" title="statement not covered" >[];</span>
  521. &nbsp;
  522. // Complete on cmds
  523. <span class="cstat-no" title="statement not covered" > if(opts.partialWord.indexOf('-'))</span>
  524. <span class="cstat-no" title="statement not covered" > compls = Object.keys(cmd._cmdsByName);</span>
  525. // Complete on required opts without '-' in last partial word
  526. // (if required not already specified)
  527. //
  528. // Commented out because of uselessness:
  529. // -b, --block suggest results in '-' on cmd line;
  530. // next completion suggest all options, because of '-'
  531. //.concat Object.keys(cmd._optsByKey).filter (v) -&gt; cmd._optsByKey[v]._req
  532. else {
  533. // complete on opt values: --opt=| case
  534. const m = <span class="cstat-no" title="statement not covered" >opts.partialWord.match(/^(--\w[\w-_]*)=(.*)$/);</span>
  535. <span class="cstat-no" title="statement not covered" > if(m) {</span>
  536. <span class="cstat-no" title="statement not covered" > optWord = m[1];</span>
  537. <span class="cstat-no" title="statement not covered" > optPrefix = optWord + '=';</span>
  538. } else
  539. // complete on opts
  540. // don't complete on opts in case of --opt=val completion
  541. // TODO: don't complete on opts in case of unknown arg after commands
  542. // TODO: complete only on opts with arr() or not already used
  543. // TODO: complete only on full opts?
  544. <span class="cstat-no" title="statement not covered" > compls = Object.keys(cmd._optsByKey);</span>
  545. }
  546. &nbsp;
  547. // complete on opt values: next arg case
  548. <span class="cstat-no" title="statement not covered" > opts.partialWords[opts.w - 1].indexOf('-') || (optWord = opts.partialWords[opts.w - 1]);</span>
  549. &nbsp;
  550. // complete on opt values: completion
  551. let opt;
  552. <span class="cstat-no" title="statement not covered" > optWord</span>
  553. &amp;&amp; (opt = cmd._optsByKey[optWord])
  554. &amp;&amp; !opt._flag
  555. &amp;&amp; opt._comp
  556. &amp;&amp; (compls = Q.join(compls,
  557. Q.when(opt._comp(opts),
  558. <span class="fstat-no" title="function not covered" > (c</span>, o) =&gt; <span class="cstat-no" title="statement not covered" >c.concat(o.map(<span class="fstat-no" title="function not covered" >v </span>=&gt; <span class="cstat-no" title="statement not covered" >(optPrefix || '') + v)</span>))</span>));
  559. &nbsp;
  560. // TODO: complete on args values (context aware, custom completion?)
  561. &nbsp;
  562. // custom completion on cmds
  563. <span class="cstat-no" title="statement not covered" > cmd._comp &amp;&amp; (compls = Q.join(compls, Q.when(cmd._comp(opts)), <span class="fstat-no" title="function not covered" >(c</span>, o) =&gt; <span class="cstat-no" title="statement not covered" >c.concat(o))</span>);</span>
  564. &nbsp;
  565. // TODO: context aware custom completion on cmds, opts and args
  566. // (can depend on already entered values, especially options)
  567. &nbsp;
  568. <span class="cstat-no" title="statement not covered" > return Q.when(compls, <span class="fstat-no" title="function not covered" >co</span>mplitions =&gt; {</span>
  569. <span class="cstat-no" title="statement not covered" > console.error('partialWord: %s', opts.partialWord);</span>
  570. <span class="cstat-no" title="statement not covered" > console.error('compls: %j', complitions);</span>
  571. <span class="cstat-no" title="statement not covered" > return compls.filter(<span class="fstat-no" title="function not covered" >(c</span>) =&gt; <span class="cstat-no" title="statement not covered" >c.indexOf(opts.partialWord) === 0)</span>;</span>
  572. });
  573. }
  574. &nbsp;</pre></td></tr>
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