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Handle non-ASCII output from lsb_release in wxGetLinuxDistributionInfo().

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Assume that lsb_release always output UTF-8 text as this seems to be the case
right now for the only (common) Linux distribution which uses anything but
ASCII for its code name (Fedora 19 "Schrödinger's Cat").

Closes #15492.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74800 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin 2013-09-12 20:49:24 +00:00
parent 6ad62591be
commit 799a2c1cd7
1 changed files with 34 additions and 14 deletions
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48
src/unix/utilsunx.cpp
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@ -914,9 +914,14 @@ wxString wxGetUserHome( const wxString &user )
// network and user id routines
// ----------------------------------------------------------------------------
// private utility function which returns output of the given command, removing
// the trailing newline
static wxString wxGetCommandOutput(const wxString &cmd)
// Private utility function which returns output of the given command, removing
// the trailing newline.
//
// Note that by default use Latin-1 just to ensure that we never fail, but if
// the encoding is known (e.g. UTF-8 for lsb_release), it should be explicitly
// used instead.
static wxString
wxGetCommandOutput(const wxString &cmd, wxMBConv& conv = wxConvISO8859_1)
{
// Suppress stderr from the shell to avoid outputting errors if the command
// doesn't exist.
@ -937,7 +942,7 @@ static wxString wxGetCommandOutput(const wxString &cmd)
if ( !fgets(buf, sizeof(buf), f) )
break;
s += wxString::FromAscii(buf);
s += wxString(buf, conv);
}
pclose(f);
@ -1078,23 +1083,38 @@ bool wxIsPlatform64Bit()
}
#ifdef __LINUX__
static bool
wxGetValueFromLSBRelease(wxString arg, const wxString& lhs, wxString* rhs)
{
// lsb_release seems to just read a global file which is always in UTF-8
// and hence its output is always in UTF-8 as well, regardless of the
// locale currently configured by our environment.
return wxGetCommandOutput(wxS("lsb_release ") + arg, wxConvUTF8)
.StartsWith(lhs, rhs);
}
wxLinuxDistributionInfo wxGetLinuxDistributionInfo()
{
const wxString id = wxGetCommandOutput(wxT("lsb_release --id"));
const wxString desc = wxGetCommandOutput(wxT("lsb_release --description"));
const wxString rel = wxGetCommandOutput(wxT("lsb_release --release"));
const wxString codename = wxGetCommandOutput(wxT("lsb_release --codename"));
wxLinuxDistributionInfo ret;
id.StartsWith("Distributor ID:\t", &ret.Id);
desc.StartsWith("Description:\t", &ret.Description);
rel.StartsWith("Release:\t", &ret.Release);
codename.StartsWith("Codename:\t", &ret.CodeName);
if ( !wxGetValueFromLSBRelease(wxS("--id"), wxS("Distributor ID:\t"),
&ret.Id) )
{
// Don't bother to continue, lsb_release is probably not available.
return ret;
}
wxGetValueFromLSBRelease(wxS("--description"), wxS("Description:\t"),
&ret.Description);
wxGetValueFromLSBRelease(wxS("--release"), wxS("Release:\t"),
&ret.Release);
wxGetValueFromLSBRelease(wxS("--codename"), wxS("Codename:\t"),
&ret.CodeName);
return ret;
}
#endif
#endif // __LINUX__
// these functions are in src/osx/utilsexc_base.cpp for wxMac
#ifndef __DARWIN__