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#!/usr/bin/python2.4
# Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Does scraping for all known versions of IE."""
import pywintypes
import time
import types
from drivers import keyboard
from drivers import mouse
from drivers import windowing
# Default version
version = "7.0.5730.1"
DEFAULT_PATH = r"c:\program files\internet explorer\iexplore.exe"
def GetBrowser(path):
"""Invoke the IE browser and return the process, frame, and content window.
Args:
path: full path to browser
Returns:
A tuple of (process handle, render pane)
"""
if not path: path = DEFAULT_PATH
(iewnd, ieproc, address_bar, render_pane, tab_window) = InvokeBrowser(path)
return (ieproc, iewnd, render_pane)
def InvokeBrowser(path):
"""Invoke the IE browser.
Args:
path: full path to browser
Returns:
A tuple of (main window, process handle, address bar,
render_pane, tab_window)
"""
# Invoke IE
(ieproc, iewnd) = windowing.InvokeAndWait(path)
# Get windows we'll need
for tries in xrange(10):
try:
address_bar = windowing.FindChildWindow(
iewnd, "WorkerW|Navigation Bar/ReBarWindow32/"
"Address Band Root/ComboBoxEx32/ComboBox/Edit")
render_pane = windowing.FindChildWindow(
iewnd, "TabWindowClass/Shell DocObject View")
tab_window = windowing.FindChildWindow(
iewnd, "CommandBarClass/ReBarWindow32/TabBandClass/DirectUIHWND")
except IndexError:
time.sleep(1)
continue
break
return (iewnd, ieproc, address_bar, render_pane, tab_window)
def Scrape(urls, outdir, size, pos, timeout=20, **kwargs):
"""Invoke a browser, send it to a series of URLs, and save its output.
Args:
urls: list of URLs to scrape
outdir: directory to place output
size: size of browser window to use
pos: position of browser window
timeout: amount of time to wait for page to load
kwargs: miscellaneous keyword args
Returns:
None if success, else an error string
"""
path = r"c:\program files\internet explorer\iexplore.exe"
if "path" in kwargs and kwargs["path"]: path = kwargs["path"]
(iewnd, ieproc, address_bar, render_pane, tab_window) = (
InvokeBrowser(path) )
# Resize and reposition the frame
windowing.MoveAndSizeWindow(iewnd, pos, size, render_pane)
# Visit each URL we're given
if type(urls) in types.StringTypes: urls = [urls]
timedout = False
for url in urls:
# Double-click in the address bar, type the name, and press Enter
mouse.DoubleClickInWindow(address_bar)
keyboard.TypeString(url)
keyboard.TypeString("\n")
# Wait for the page to finish loading
load_time = windowing.WaitForThrobber(
tab_window, (6, 8, 22, 24), timeout)
timedout = load_time < 0
if timedout:
break
# Scrape the page
image = windowing.ScrapeWindow(render_pane)
# Save to disk
if "filename" in kwargs:
if callable(kwargs["filename"]):
filename = kwargs["filename"](url)
else:
filename = kwargs["filename"]
else:
filename = windowing.URLtoFilename(url, outdir, ".bmp")
image.save(filename)
windowing.EndProcess(ieproc)
if timedout:
return "timeout"
def Time(urls, size, timeout, **kwargs):
"""Measure how long it takes to load each of a series of URLs
Args:
urls: list of URLs to time
size: size of browser window to use
timeout: amount of time to wait for page to load
kwargs: miscellaneous keyword args
Returns:
A list of tuples (url, time). "time" can be "crashed" or "timeout"
"""
if "path" in kwargs and kwargs["path"]: path = kwargs["path"]
else: path = DEFAULT_PATH
proc = None
# Visit each URL we're given
if type(urls) in types.StringTypes: urls = [urls]
ret = []
for url in urls:
try:
# Invoke the browser if necessary
if not proc:
(wnd, proc, address_bar, render_pane, tab_window) = InvokeBrowser(path)
# Resize and reposition the frame
windowing.MoveAndSizeWindow(wnd, (0,0), size, render_pane)
# Double-click in the address bar, type the name, and press Enter
mouse.DoubleClickInWindow(address_bar)
keyboard.TypeString(url)
keyboard.TypeString("\n")
# Wait for the page to finish loading
load_time = windowing.WaitForThrobber(
tab_window, (6, 8, 22, 24), timeout)
timedout = load_time < 0
if timedout:
load_time = "timeout"
# Send an alt-F4 to make the browser close; if this times out,
# we've probably got a crash
keyboard.TypeString(r"{\4}", use_modifiers=True)
if not windowing.WaitForProcessExit(proc, timeout):
windowing.EndProcess(proc)
load_time = "crashed"
proc = None
except pywintypes.error:
load_time = "crashed"
proc = None
ret.append( (url, load_time) )
# Send an alt-F4 to make the browser close; if this times out,
# we've probably got a crash
if proc:
keyboard.TypeString(r"{\4}", use_modifiers=True)
if not windowing.WaitForProcessExit(proc, timeout):
windowing.EndProcess(proc)
return ret
if __name__ == "__main__":
# We're being invoked rather than imported, so run some tests
path = r"c:\sitecompare\scrapes\ie7\7.0.5380.11"
windowing.PreparePath(path)
# Scrape three sites and save the results
Scrape(
["http://www.microsoft.com",
"http://www.google.com",
"http://www.sun.com"],
path, (1024, 768), (0, 0))
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