2022-11-15 21:49:31 +00:00
|
|
|
#!/usr/local/bin/python3.sh
|
|
|
|
|
# -*-mode: python; indent-tabs-mode: nil; py-indent-offset: 2; coding: utf-8 -*-
|
|
|
|
|
# https://gist.github.com/michaelfranzl/91f0cc13c56120391b949f885643e974/raw/a0601515e7a575bc4c7d4d2a20973b29b6c6f2df/phantom.py
|
|
|
|
|
"""
|
|
|
|
|
# phantom.py
|
|
|
|
|
|
|
|
|
|
Simple but fully scriptable headless QtWebKit browser using PyQt5 in Python3,
|
|
|
|
|
specialized in executing external JavaScript and generating PDF files. A lean
|
|
|
|
|
replacement for other bulky headless browser frameworks.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## Usage
|
|
|
|
|
|
|
|
|
|
If you have a display attached:
|
|
|
|
|
|
2022-11-16 18:33:59 +00:00
|
|
|
./phantom.py [--pdf_output <pdf-file>] [--js_input <javascript-file>] <url-or-html-file>
|
|
|
|
|
|
2022-11-16 15:33:50 +00:00
|
|
|
If you don't have a display attached (i.e. on a remote server), you can use
|
|
|
|
|
xvfb-run, or don't add --show_gui - it should work without a display.
|
2022-11-15 21:49:31 +00:00
|
|
|
|
|
|
|
|
Arguments:
|
|
|
|
|
|
2022-11-16 15:33:50 +00:00
|
|
|
[--pdf_output <pdf-file>] (optional) Path and name of PDF file to generate
|
|
|
|
|
[--html_output <html-file>] (optional) Path and name of HTML file to generate
|
|
|
|
|
[--js_input <javascript-file>] (optional) Path and name of a JavaScript file to execute
|
|
|
|
|
--log_level 10=debug 20=info 30=warn 40=error
|
2022-11-15 21:49:31 +00:00
|
|
|
<url> Can be a http(s) URL or a path to a local file
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## Features
|
|
|
|
|
|
|
|
|
|
* Generate a PDF screenshot of the web page after it is completely loaded.
|
|
|
|
|
* Optionally execute a local JavaScript file specified by the argument
|
|
|
|
|
<javascript-file> after the web page is completely loaded, and before
|
|
|
|
|
the PDF is generated.
|
|
|
|
|
* console.log's will be printed to stdout.
|
|
|
|
|
* Easily add new features by changing the source code of this script, without
|
|
|
|
|
compiling C++ code. For more advanced applications, consider attaching
|
|
|
|
|
PyQt objects/methods to WebKit's JavaScript space by using
|
|
|
|
|
`QWebFrame::addToJavaScriptWindowObject()`.
|
|
|
|
|
|
|
|
|
|
If you execute an external <javascript-file>, phantom.py has no way of knowing
|
|
|
|
|
when that script has finished doing its work. For this reason, the external
|
|
|
|
|
script should execute `console.log("__PHANTOM_PY_DONE__");` when done. This will
|
|
|
|
|
trigger the PDF generation, after which phantom.py will exit. If no
|
|
|
|
|
`__PHANTOM_PY_DONE__` string is seen on the console for 10 seconds, phantom.py
|
|
|
|
|
will exit without doing anything. This behavior could be implemented more
|
|
|
|
|
elegantly without console.log's but it is the simplest solution.
|
|
|
|
|
|
|
|
|
|
It is important to remember that since you're just running WebKit, you can use
|
|
|
|
|
everything that WebKit supports, including the usual JS client libraries, CSS,
|
|
|
|
|
CSS @media types, etc.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## Dependencies
|
|
|
|
|
|
|
|
|
|
* Python3
|
|
|
|
|
* PyQt5
|
2022-11-16 15:33:50 +00:00
|
|
|
* [qasnyc](https://github.com/CabbageDevelopment/qasync) for the
|
|
|
|
|
standalone program ```qasnyc_phantompy.py```
|
|
|
|
|
|
2022-11-15 21:49:31 +00:00
|
|
|
* xvfb (optional for display-less machines)
|
|
|
|
|
|
|
|
|
|
Installation of dependencies in Debian Stretch is easy:
|
|
|
|
|
|
|
|
|
|
apt-get install xvfb python3-pyqt5 python3-pyqt5.qtwebkit
|
2022-11-16 18:33:59 +00:00
|
|
|
|
2022-11-15 21:49:31 +00:00
|
|
|
Finding the equivalent for other OSes is an exercise that I leave to you.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## Examples
|
|
|
|
|
|
|
|
|
|
Given the following file /tmp/test.html
|
|
|
|
|
|
|
|
|
|
<html>
|
|
|
|
|
<body>
|
|
|
|
|
<p>foo <span id="id1">foo</span> <span id="id2">foo</span></p>
|
|
|
|
|
</body>
|
|
|
|
|
<script>
|
|
|
|
|
document.getElementById('id1').innerHTML = "bar";
|
|
|
|
|
</script>
|
|
|
|
|
</html>
|
2022-11-16 18:33:59 +00:00
|
|
|
|
2022-11-15 21:49:31 +00:00
|
|
|
... and the following file /tmp/test.js:
|
|
|
|
|
|
|
|
|
|
document.getElementById('id2').innerHTML = "baz";
|
|
|
|
|
console.log("__PHANTOM_PY_DONE__");
|
2022-11-16 18:33:59 +00:00
|
|
|
|
2022-11-15 21:49:31 +00:00
|
|
|
... and running this script (without attached display) ...
|
|
|
|
|
|
|
|
|
|
xvfb-run python3 phantom.py /tmp/test.html /tmp/out.pdf /tmp/test.js
|
2022-11-16 18:33:59 +00:00
|
|
|
|
2022-11-15 21:49:31 +00:00
|
|
|
... you will get a PDF file /tmp/out.pdf with the contents "foo bar baz".
|
|
|
|
|
|
|
|
|
|
Note that the second occurrence of "foo" has been replaced by the web page's own
|
|
|
|
|
script, and the third occurrence of "foo" by the external JS file.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## License
|
|
|
|
|
|
|
|
|
|
Copyright 2017 Michael Karl Franzl
|
|
|
|
|
|
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy of
|
|
|
|
|
this software and associated documentation files (the "Software"), to deal in
|
|
|
|
|
the Software without restriction, including without limitation the rights to
|
|
|
|
|
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
|
|
|
|
|
of the Software, and to permit persons to whom the Software is furnished to do
|
|
|
|
|
so, subject to the following conditions:
|
|
|
|
|
|
|
|
|
|
The above copyright notice and this permission notice shall be included in all
|
|
|
|
|
copies or substantial portions of the Software.
|
|
|
|
|
|
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
|
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
|
|
|
|
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
|
|
|
|
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
|
|
|
|
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
|
|
|
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
|
|
|
"""
|
|
|
|
|
|
|
|
|
|
import sys
|
|
|
|
|
import os
|
|
|
|
|
import traceback
|
|
|
|
|
import atexit
|
|
|
|
|
import time
|
|
|
|
|
|
|
|
|
|
from PyQt5.QtCore import QUrl
|
|
|
|
|
from PyQt5.QtCore import QTimer
|
|
|
|
|
from PyQt5.QtWidgets import QApplication
|
|
|
|
|
from PyQt5.QtPrintSupport import QPrinter
|
|
|
|
|
from PyQt5.QtWebEngineWidgets import QWebEnginePage
|
|
|
|
|
|
|
|
|
|
global LOG
|
|
|
|
|
import logging
|
|
|
|
|
import warnings
|
|
|
|
|
warnings.filterwarnings('ignore')
|
|
|
|
|
LOG = logging.getLogger()
|
|
|
|
|
|
|
|
|
|
def prepare(sdir='/tmp'):
|
|
|
|
|
sfile = os.path.join(sdir, 'test.js')
|
|
|
|
|
if not os.path.exists(sfile):
|
|
|
|
|
with open(sfile, 'wt') as ofd:
|
|
|
|
|
ofd.write("""
|
|
|
|
|
document.getElementById('id2').innerHTML = "baz";
|
|
|
|
|
console.log("__PHANTOM_PY_DONE__");
|
|
|
|
|
""")
|
|
|
|
|
LOG.debug(f"wrote {sfile} ")
|
|
|
|
|
sfile = os.path.join(sdir, 'test.html')
|
|
|
|
|
if not os.path.exists(sfile):
|
|
|
|
|
with open(sfile, 'wt') as ofd:
|
|
|
|
|
ofd.write("""
|
|
|
|
|
<html>
|
|
|
|
|
<body>
|
|
|
|
|
<p>foo <span id="id1">foo</span> <span id="id2">foo</span></p>
|
|
|
|
|
</body>
|
|
|
|
|
<script>
|
|
|
|
|
document.getElementById('id1').innerHTML = "bar";
|
|
|
|
|
</script>
|
|
|
|
|
</html>
|
|
|
|
|
""")
|
|
|
|
|
LOG.debug(f"wrote {sfile} ")
|
2022-11-16 18:33:59 +00:00
|
|
|
|
2022-11-15 21:49:31 +00:00
|
|
|
class Render(QWebEnginePage):
|
|
|
|
|
def __init__(self, app, do_print=False, do_save=True):
|
2022-11-16 18:33:59 +00:00
|
|
|
app.ldone = []
|
|
|
|
|
self._app = app
|
|
|
|
|
self.do_print = do_print
|
|
|
|
|
self.do_save = do_save
|
|
|
|
|
self.percent = 0
|
|
|
|
|
self.uri = None
|
|
|
|
|
self.jsfile = None
|
|
|
|
|
self.htmlfile = None
|
|
|
|
|
self.pdffile = None
|
|
|
|
|
QWebEnginePage.__init__(self)
|
2022-11-15 21:49:31 +00:00
|
|
|
|
2022-11-16 15:33:50 +00:00
|
|
|
def run(self, url, pdffile, htmlfile, jsfile):
|
2022-11-15 21:49:31 +00:00
|
|
|
self._app.lstart.append(id(self))
|
|
|
|
|
self.percent = 10
|
|
|
|
|
self.uri = url
|
|
|
|
|
self.jsfile = jsfile
|
2022-11-16 15:33:50 +00:00
|
|
|
self.htmlfile = htmlfile
|
|
|
|
|
self.pdffile = pdffile
|
|
|
|
|
self.outfile = pdffile or htmlfile
|
2022-11-15 21:49:31 +00:00
|
|
|
LOG.debug(f"phantom.py: URL={url} OUTFILE={outfile} JSFILE={jsfile}")
|
2022-11-16 18:33:59 +00:00
|
|
|
qurl = QUrl.fromUserInput(url)
|
|
|
|
|
|
2022-11-15 21:49:31 +00:00
|
|
|
# The PDF generation only happens when the special string __PHANTOM_PY_DONE__
|
|
|
|
|
# is sent to console.log(). The following JS string will be executed by
|
|
|
|
|
# default, when no external JavaScript file is specified.
|
|
|
|
|
self.js_contents = "setTimeout(function() { console.log('__PHANTOM_PY_DONE__') }, 5000);";
|
2022-11-16 18:33:59 +00:00
|
|
|
|
2022-11-15 21:49:31 +00:00
|
|
|
if jsfile:
|
|
|
|
|
try:
|
|
|
|
|
with open(self.jsfile, 'rt') as f:
|
|
|
|
|
self.js_contents = f.read()
|
|
|
|
|
except Exception as e:
|
|
|
|
|
LOG.exception(f"error reading jsfile {self.jsfile}")
|
2022-11-16 18:33:59 +00:00
|
|
|
|
2022-11-15 21:49:31 +00:00
|
|
|
self.loadFinished.connect(self._loadFinished)
|
|
|
|
|
self.percent = 20
|
|
|
|
|
self.load(qurl)
|
|
|
|
|
self.javaScriptConsoleMessage = self._onConsoleMessage
|
|
|
|
|
LOG.debug(f"phantom.py: loading 10")
|
2022-11-16 18:33:59 +00:00
|
|
|
|
2022-11-15 21:49:31 +00:00
|
|
|
def _onConsoleMessage(self, *args):
|
2022-11-16 18:33:59 +00:00
|
|
|
if len(args) > 3:
|
|
|
|
|
level, txt, lineno, filename = args
|
|
|
|
|
else:
|
|
|
|
|
level = 1
|
|
|
|
|
txt, lineno, filename = args
|
|
|
|
|
LOG.debug(f"CONSOLE {lineno} {txt} {filename}")
|
|
|
|
|
if "__PHANTOM_PY_DONE__" in txt:
|
|
|
|
|
self.percent = 40
|
|
|
|
|
# If we get this magic string, it means that the external JS is done
|
|
|
|
|
if self.do_save:
|
|
|
|
|
self.toHtml(self._html_callback)
|
|
|
|
|
return
|
|
|
|
|
# drop through
|
|
|
|
|
txt = "__PHANTOM_PY_SAVED__"
|
|
|
|
|
if "__PHANTOM_PY_SAVED__" in txt:
|
|
|
|
|
self.percent = 50
|
|
|
|
|
if self.do_print:
|
|
|
|
|
self._print()
|
|
|
|
|
return
|
|
|
|
|
txt = "__PHANTOM_PY_PRINTED__"
|
|
|
|
|
if "__PHANTOM_PY_PRINTED__" in txt:
|
|
|
|
|
self.percent = 60
|
|
|
|
|
self._exit(level)
|
|
|
|
|
|
2022-11-15 21:49:31 +00:00
|
|
|
def _loadFinished(self, result):
|
2022-11-16 18:33:59 +00:00
|
|
|
# RenderProcessTerminationStatus ?
|
|
|
|
|
self.percent = 30
|
|
|
|
|
LOG.info(f"phantom.py: _loadFinished {result} {self.percent}")
|
|
|
|
|
LOG.debug(f"phantom.py: Evaluating JS from {self.jsfile}")
|
|
|
|
|
self.runJavaScript("document.documentElement.contentEditable=true")
|
|
|
|
|
self.runJavaScript(self.js_contents)
|
2022-11-15 21:49:31 +00:00
|
|
|
|
|
|
|
|
def _html_callback(self, *args):
|
|
|
|
|
"""print(self, QPrinter, Callable[[bool], None])"""
|
|
|
|
|
if type(args[0]) is str:
|
|
|
|
|
self._save(args[0])
|
|
|
|
|
self._onConsoleMessage(0, "__PHANTOM_PY_SAVED__", 0 , '')
|
2022-11-16 18:33:59 +00:00
|
|
|
|
2022-11-15 21:49:31 +00:00
|
|
|
def _save(self, html):
|
2022-11-16 15:33:50 +00:00
|
|
|
sfile = self.htmlfile
|
2022-11-15 21:49:31 +00:00
|
|
|
# CompleteHtmlSaveFormat SingleHtmlSaveFormat MimeHtmlSaveFormat
|
|
|
|
|
with open(sfile, 'wt') as ofd:
|
|
|
|
|
ofd.write(html)
|
|
|
|
|
LOG.debug(f"Saved {sfile}")
|
|
|
|
|
|
|
|
|
|
def _printer_callback(self, *args):
|
|
|
|
|
"""print(self, QPrinter, Callable[[bool], None])"""
|
|
|
|
|
if args[0] is False:
|
|
|
|
|
i = 1
|
|
|
|
|
else:
|
|
|
|
|
i = 0
|
|
|
|
|
self._onConsoleMessage(i, "__PHANTOM_PY_PRINTED__", 0 , '')
|
|
|
|
|
|
|
|
|
|
def _print(self):
|
2022-11-16 15:33:50 +00:00
|
|
|
sfile = self.pdffile
|
2022-11-15 21:49:31 +00:00
|
|
|
printer = QPrinter()
|
|
|
|
|
printer.setPageMargins(10, 10, 10, 10, QPrinter.Millimeter)
|
|
|
|
|
printer.setPaperSize(QPrinter.A4)
|
|
|
|
|
printer.setCreator("phantom.py by Michael Karl Franzl")
|
|
|
|
|
printer.setOutputFormat(QPrinter.PdfFormat);
|
|
|
|
|
printer.setOutputFileName(sfile)
|
|
|
|
|
self.print(printer, self._printer_callback)
|
|
|
|
|
LOG.debug("phantom.py: Printed")
|
2022-11-16 18:33:59 +00:00
|
|
|
|
2022-11-15 21:49:31 +00:00
|
|
|
def _exit(self, val):
|
|
|
|
|
self.percent = 100
|
|
|
|
|
LOG.debug(f"phantom.py: Exiting with val {val}")
|
|
|
|
|
# threadsafe?
|
|
|
|
|
self._app.ldone.append(self.uri)
|
|
|
|
|
|
