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Support for output format type on http.webpage.simplify even when outfile is not specified

This commit is contained in:
Fabio Manganiello 2021-11-26 19:07:15 +01:00
parent f9f9c38a8b
commit 848b736d6e
Signed by: blacklight
GPG Key ID: D90FBA7F76362774
3 changed files with 51 additions and 18 deletions
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58
platypush/plugins/http/webpage/__init__.py
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@ -18,7 +18,7 @@ class HttpWebpagePlugin(Plugin):
* **weasyprint** (``pip install weasyprint``), optional, for HTML->PDF conversion * **weasyprint** (``pip install weasyprint``), optional, for HTML->PDF conversion
* **node** and **npm** installed on your system (to use the mercury-parser interface) * **node** and **npm** installed on your system (to use the mercury-parser interface)
* The mercury-parser library installed (``npm install @postlight/mercury-parser``) * The mercury-parser library installed (``npm install -g @postlight/mercury-parser``)
""" """
@ -33,17 +33,17 @@ class HttpWebpagePlugin(Plugin):
@action @action
def simplify(self, url, type='html', html=None, outfile=None): def simplify(self, url, type='html', html=None, outfile=None):
""" """
Parse the content of a web page removing any extra elements using Mercury Parse the readable content of a web page removing any extra HTML elements using Mercury.
:param url: URL to parse. :param url: URL to parse.
:param type: Input type. Supported types: html, markdown, text (default: html). :param type: Output format. Supported types: ``html``, ``markdown``, ``text`` (default: ``html``).
:param html: Set this parameter if you want to parse some HTML content already fetched. Note :param html: Set this parameter if you want to parse some HTML content already fetched. Note
that URL is still required by Mercury to properly style the output, but it won't be used that URL is still required by Mercury to properly style the output, but it won't be used
to actually fetch the content. to actually fetch the content.
:param outfile: If set then the output will be written to the specified file :param outfile: If set then the output will be written to the specified file. If the file extension
(supported formats: pdf, html, plain (default)). The plugin will guess is ``.pdf`` then the content will be exported in PDF format. If the output ``type`` is not
the format from the extension specified then it can also be inferred from the extension of the output file.
:return: dict :return: dict
Example if outfile is not specified:: Example if outfile is not specified::
@ -67,6 +67,20 @@ class HttpWebpagePlugin(Plugin):
""" """
self.logger.info('Parsing URL {}'.format(url)) self.logger.info('Parsing URL {}'.format(url))
wants_pdf = False
if outfile:
wants_pdf = outfile.lower().endswith('.pdf')
if (
wants_pdf # HTML will be exported to PDF
or outfile.lower().split('.')[-1].startswith('htm')
):
type = 'html'
elif outfile.lower().endswith('.md'):
type = 'markdown'
elif outfile.lower().endswith('.txt'):
type = 'text'
proc = ['node', self._mercury_script, url, type] proc = ['node', self._mercury_script, url, type]
f = None f = None
@ -102,9 +116,6 @@ class HttpWebpagePlugin(Plugin):
} }
outfile = os.path.abspath(os.path.expanduser(outfile)) outfile = os.path.abspath(os.path.expanduser(outfile))
content = '''<h1>{title}</h1><div class="_parsed-content">{content}</div>'''.\
format(title=title, content=content)
style = ''' style = '''
body { body {
font-size: 22px; font-size: 22px;
@ -112,7 +123,27 @@ class HttpWebpagePlugin(Plugin):
} }
''' '''
if outfile.lower().endswith('.pdf'): if type == 'html':
content = (
'''
<h1><a href="{url}" target="_blank">{title}</a></h1>
<div class="_parsed-content">{content}</div>
'''.format(title=title, url=url, content=content)
)
if not wants_pdf:
content = '''<html>
<head>
<title>{title}</title>
<style>{style}</style>
</head>'''.format(title=title, style=style) + \
'<body>{{' + content + '}}</body></html>'
elif type == 'markdown':
content = '# [{title}]({url})\n\n{content}'.format(
title=title, url=url, content=content
)
if wants_pdf:
import weasyprint import weasyprint
try: try:
from weasyprint.fonts import FontConfiguration from weasyprint.fonts import FontConfiguration
@ -125,13 +156,6 @@ class HttpWebpagePlugin(Plugin):
weasyprint.HTML(string=content).write_pdf(outfile, stylesheets=css) weasyprint.HTML(string=content).write_pdf(outfile, stylesheets=css)
else: else:
content = '''<html>
<head>
<title>{title}</title>
<style>{style}</style>
</head>'''.format(title=title, style=style) + \
'<body>{{' + content + '}}</body></html>'
with open(outfile, 'w', encoding='utf-8') as f: with open(outfile, 'w', encoding='utf-8') as f:
f.write(content) f.write(content)

9
platypush/plugins/http/webpage/manifest.yaml
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@ -3,5 +3,14 @@ manifest:
install: install:
pip: pip:
- weasyprint - weasyprint
apt:
- sudo
- nodejs
- npm
pacman:
- sudo
- npm
exec:
- sudo npm install -g @postlight/mercury-parser
package: platypush.plugins.http.webpage package: platypush.plugins.http.webpage
type: plugin type: plugin

2
platypush/plugins/http/webpage/mercury-parser.js
View File

@ -10,7 +10,7 @@ const fs = require('fs');
const Mercury = require('@postlight/mercury-parser'); const Mercury = require('@postlight/mercury-parser');
if (process.argv.length < 3) { if (process.argv.length < 3) {
console.error('Usage: ' + process.argv[1] + ' <url to parse> [markdown|html] [Pre-fetched HTML content file]'); console.error('Usage: ' + process.argv[1] + ' <url to parse> [markdown|html|text] [Pre-fetched HTML content file]');
process.exit(1); process.exit(1);
} }