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parse and transform streaming html using css selectors
input html:
<table>
<tbody>blah blah blah</tbody>
<tr><td>there</td></tr>
<tr><td>it</td></tr>
<tr><td>is</td></tr>
</table>
var trumpet = require('trumpet');
var tr = trumpet();
tr.pipe(process.stdout);
var ws = tr.select('tbody').createWriteStream();
ws.end('<tr><td>rawr</td></tr>');
var fs = require('fs');
fs.createReadStream(__dirname + '/html/table.html').pipe(tr);
output:
<table>
<tbody><tr><td>rawr</td></tr></tbody>
<tr><td>there</td></tr>
<tr><td>it</td></tr>
<tr><td>is</td></tr>
</table>
input html:
<html>
<head>
<title>beep</title>
</head>
<body>
<div class="a">¡¡¡</div>
<div class="b">
<span>tacos</span>
<span> y </span>
<span>burritos</span>
</div>
<div class="a">!!!</div>
</body>
</html>
var trumpet = require('trumpet');
var tr = trumpet();
tr.selectAll('.b span', function (span) {
span.createReadStream().pipe(process.stdout);
});
var fs = require('fs');
fs.createReadStream(__dirname + '/html/read_all.html').pipe(tr);
output:
tacos y burritos
var trumpet = require('trumpet')
Create a new trumpet stream. This stream is readable and writable.
Pipe an html stream into tr
and get back a transformed html stream.
Parse errors are emitted by tr
in an 'error'
event.
Return a result object elem
for the first element matching selector
.
Get a result object elem
for every element matching selector
.
When the selector for elem
matches, query the case-insensitive attribute
called name
with cb(value)
.
Returns elem
.
Get all the elements in cb(attributes)
as an object attributes
with
lower-case keys.
Returns elem
.
When the selector for elem
matches, replace the case-insensitive attribute
called name
with value
.
If the attribute doesn't exist, it will be created in the output stream.
Returns elem
.
When the selector for elem
matches, remove the attribute called name
if it
exists.
Returns elem
.
Create a new readable stream with the inner html content under elem
.
To use the outer html content instead of the inner, set opts.outer
to true
.
Create a new write stream to replace the inner html content under elem
.
To use the outer html content instead of the inner, set opts.outer
to true
.
Create a new readable writable stream that outputs the content under elem
and
replaces the content with the data written to it.
To use the outer html content instead of the inner, set opts.outer
to true
.
Short-hand for tr.select(sel).createStream(opts)
.
Short-hand for tr.select(sel).createReadStream(opts)
.
Short-hand for tr.select(sel).createWriteStream(opts)
.
The element name as a lower-case string. For example: 'div'
.
Presently these css selectors work:
With npm do:
npm install trumpet
MIT
FAQs
parse and transform streaming html using css selectors
The npm package trumpet receives a total of 6,717 weekly downloads. As such, trumpet popularity was classified as popular.
We found that trumpet demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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