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Changed selectNewest to ensureMinimal. If the default version is >=

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the minimum then use it, otherwise find an installed version that is
>= minimum, or will display a message and bail out.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@30131 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robin Dunn 2004-10-27 23:59:43 +00:00
parent 153fe6e7dd
commit 6be3fd57c6
1 changed files with 71 additions and 29 deletions
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100
wxPython/wxversion/wxversion.py
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@ -124,43 +124,52 @@ def select(versions):
#----------------------------------------------------------------------
def selectNewest(minVersion):
def ensureMinimal(minVersion):
"""
Selects a version of wxPython that has a version number greater
than or equal to the version given. If a matching version is not
found then instead of raising an exception like select() does this
function will inform the user of that fact with a message dialog,
open the system's default web browser to the wxPython download
page, and then will exit the application.
Checks to see if the default version of wxPython is greater-than
or equal to `minVersion`. If not then it will try to find an
installed version that is >= minVersion. If none are available
then a message is displayed that will inform the user and will
offer to open their web browser to the wxPython downloads page,
and will then exit the application.
"""
assert type(minVersion) == str
# ensure that wxPython hasn't been imported yet.
if sys.modules.has_key('wx') or sys.modules.has_key('wxPython'):
raise VersionError("wxversion.selectNewest() must be called before wxPython is imported")
bestMatch = None
installed = _find_installed(True)
minv = _wxPackageInfo(minVersion)
raise VersionError("wxversion.ensureMinimal() must be called before wxPython is imported")
if installed:
# The list is in reverse sorted order, so if the first one is
# big enough then choose it
if installed[0] >= minv:
bestMatch = installed[0]
bestMatch = None
minv = _wxPackageInfo(minVersion)
defaultPath = _find_default()
if defaultPath:
defv = _wxPackageInfo(defaultPath, True)
if defv >= minv:
bestMatch = defv
if bestMatch is None:
installed = _find_installed()
if installed:
# The list is in reverse sorted order, so if the first one is
# big enough then choose it
if installed[0] >= minv:
bestMatch = installed[0]
if bestMatch is None:
import wx, webbrowser
versions = "\n".join([" "+ver for ver in getInstalled()])
app = wx.PySimpleApp()
wx.MessageBox("This application requires a version of wxPython "
"greater than or equal to %s but a matching version "
"was not found.\n\n"
"You currently have these version(s) installed:\n%s"
% (minVersion, versions),
"wxPython Upgrade Needed", style=wx.OK)
result = wx.MessageBox("This application requires a version of wxPython "
"greater than or equal to %s, but a matching version "
"was not found.\n\n"
"You currently have these version(s) installed:\n%s\n\n"
"Would you like to download a new version of wxPython?\n"
% (minVersion, versions),
"wxPython Upgrade Needed", style=wx.YES_NO)
if result == wx.YES:
webbrowser.open("http://sourceforge.net/project/showfiles.php?group_id=10718")
app.MainLoop()
webbrowser.open("http://sourceforge.net/project/showfiles.php?group_id=10718")
sys.exit()
sys.path.insert(0, bestMatch.pathname)
@ -254,6 +263,35 @@ def _find_installed(removeExisting=False):
return installed
# Scan the sys.path looking for either a directory matching _pattern,
# or a wx.pth file
def _find_default():
for pth in sys.path:
# empty means to look in the current dir
if not pth:
pth = '.'
# skip it if it's not a package dir
if not os.path.isdir(pth):
continue
# does it match the pattern?
base = os.path.basename(pth)
if fnmatch.fnmatchcase(base, _pattern):
return pth
for pth in sys.path:
if not pth:
pth = '.'
if not os.path.isdir(pth):
continue
if os.path.exists(os.path.join(pth, 'wx.pth')):
base = open(os.path.join(pth, 'wx.pth')).read()
return os.path.join(pth, base)
return None
class _wxPackageInfo(object):
def __init__(self, pathname, stripFirst=False):
self.pathname = pathname
@ -305,9 +343,9 @@ class _wxPackageInfo(object):
if __name__ == '__main__':
import pprint
#selectNewest('2.5')
#print sys.path[0]
#ensureMinimal('2.5')
#pprint.pprint(sys.path)
#sys.exit()
@ -318,8 +356,8 @@ if __name__ == '__main__':
#test
select(version)
print "Asked for %s:\t got: %s" % (version, sys.path[0])
#pprint.pprint(sys.path)
#print
pprint.pprint(sys.path)
print
# reset
sys.path = savepath[:]
@ -349,6 +387,10 @@ if __name__ == '__main__':
print checkInstalled("2.4")
print checkInstalled("2.5-unicode")
print checkInstalled("2.99-bogus")
print "Current sys.path:"
pprint.pprint(sys.path)
print
test("2.4")
test("2.5")
test("2.5-gtk2")