QString KConfigBase::readEntry(const char *pKey, const QString &aDefault) const
{
// we need to access _locale instead of the method locale()
// because calling locale() will create a locale object if it
// doesn't exist, which requires KConfig, which will create a infinite
// loop, and nobody likes those.
if(!bLocaleInitialized && KGlobal::_locale)
{
// get around const'ness.
KConfigBase *that = const_cast< KConfigBase * >(this);
that->setLocale();
}
QString aValue;
bool expand = false;
// construct a localized version of the key
// try the localized key first
KEntry aEntryData;
KEntryKey entryKey(mGroup, 0);
entryKey.c_key = pKey;
entryKey.bDefault = readDefaults();
entryKey.bLocal = true;
aEntryData = lookupData(entryKey);
if(!aEntryData.mValue.isNull())
{
// for GNOME .desktop
aValue = KStringHandler::from8Bit(aEntryData.mValue.data());
expand = aEntryData.bExpand;
}
else
{
entryKey.bLocal = false;
aEntryData = lookupData(entryKey);
if(!aEntryData.mValue.isNull())
{
aValue = QString::fromUtf8(aEntryData.mValue.data());
if(aValue.isNull())
{
static const QString &emptyString = KGlobal::staticQString("");
aValue = emptyString;
}
expand = aEntryData.bExpand;
}
else
{
aValue = aDefault;
}
}
// only do dollar expansion if so desired
if(expand || bExpand)
{
// check for environment variables and make necessary translations
int nDollarPos = aValue.find('$');
while(nDollarPos != -1 && nDollarPos + 1 < static_cast< int >(aValue.length()))
{
// there is at least one $
if((aValue)[nDollarPos + 1] == '(')
{
uint nEndPos = nDollarPos + 1;
// the next character is no $
while((nEndPos <= aValue.length()) && (aValue[nEndPos] != ')'))
nEndPos++;
nEndPos++;
QString cmd = aValue.mid(nDollarPos + 2, nEndPos - nDollarPos - 3);
QString result;
FILE *fs = popen(QFile::encodeName(cmd).data(), "r");
if(fs)
{
{
QTextStream ts(fs, IO_ReadOnly);
result = ts.read().stripWhiteSpace();
}
pclose(fs);
}
aValue.replace(nDollarPos, nEndPos - nDollarPos, result);
}
else if((aValue)[nDollarPos + 1] != '$')
{
uint nEndPos = nDollarPos + 1;
// the next character is no $
QString aVarName;
if(aValue[nEndPos] == '{')
{
while((nEndPos <= aValue.length()) && (aValue[nEndPos] != '}'))
nEndPos++;
nEndPos++;
aVarName = aValue.mid(nDollarPos + 2, nEndPos - nDollarPos - 3);
}
else
{
while(nEndPos <= aValue.length() && (aValue[nEndPos].isNumber() || aValue[nEndPos].isLetter() || aValue[nEndPos] == '_'))
nEndPos++;
aVarName = aValue.mid(nDollarPos + 1, nEndPos - nDollarPos - 1);
}
const char *pEnv = 0;
if(!aVarName.isEmpty())
pEnv = getenv(aVarName.ascii());
if(pEnv)
{
// !!! Sergey A. Sukiyazov <*****@*****.**> !!!
// A environment variables may contain values in 8bit
// locale cpecified encoding or in UTF8 encoding.
aValue.replace(nDollarPos, nEndPos - nDollarPos, KStringHandler::from8Bit(pEnv));
}
else
aValue.remove(nDollarPos, nEndPos - nDollarPos);
}
else
{
// remove one of the dollar signs
aValue.remove(nDollarPos, 1);
nDollarPos++;
}
nDollarPos = aValue.find('$', nDollarPos);
}
}
return aValue;
}
