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simplify DBus error table lookup

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Signed-off-by: Ivailo Monev <xakepa10@laimg.moc>
This commit is contained in:
Ivailo Monev 2019-12-12 01:02:05 +00:00
parent 944d708999
commit fbe2c7227b
1 changed files with 41 additions and 88 deletions
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129
src/dbus/qdbuserror.cpp
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@ -48,105 +48,58 @@
QT_BEGIN_NAMESPACE
/*
* Use the following Perl script to generate the error string index list:
===== PERL SCRIPT ====
print "static const char errorMessages_string[] =\n";
$counter = 0;
$i = 0;
while (<STDIN>) {
chomp;
print " \"$_\\0\"\n";
$sizes[$i++] = $counter;
$counter += 1 + length $_;
}
print " \"\\0\";\n\nstatic const int errorMessages_indices[] = {\n ";
for ($j = 0; $j < $i; ++$j) {
printf "$sizes[$j], ";
}
print "0\n};\n";
===== PERL SCRIPT ====
* The input data is as follows:
other
org.freedesktop.DBus.Error.Failed
org.freedesktop.DBus.Error.NoMemory
org.freedesktop.DBus.Error.ServiceUnknown
org.freedesktop.DBus.Error.NoReply
org.freedesktop.DBus.Error.BadAddress
org.freedesktop.DBus.Error.NotSupported
org.freedesktop.DBus.Error.LimitsExceeded
org.freedesktop.DBus.Error.AccessDenied
org.freedesktop.DBus.Error.NoServer
org.freedesktop.DBus.Error.Timeout
org.freedesktop.DBus.Error.NoNetwork
org.freedesktop.DBus.Error.AddressInUse
org.freedesktop.DBus.Error.Disconnected
org.freedesktop.DBus.Error.InvalidArgs
org.freedesktop.DBus.Error.UnknownMethod
org.freedesktop.DBus.Error.TimedOut
org.freedesktop.DBus.Error.InvalidSignature
org.freedesktop.DBus.Error.UnknownInterface
com.trolltech.QtDBus.Error.InternalError
org.freedesktop.DBus.Error.UnknownObject
com.trolltech.QtDBus.Error.InvalidService
com.trolltech.QtDBus.Error.InvalidObjectPath
com.trolltech.QtDBus.Error.InvalidInterface
com.trolltech.QtDBus.Error.InvalidMember
*/
// in the same order as KnownErrors!
static const char errorMessages_string[] =
"other\0"
"org.freedesktop.DBus.Error.Failed\0"
"org.freedesktop.DBus.Error.NoMemory\0"
"org.freedesktop.DBus.Error.ServiceUnknown\0"
"org.freedesktop.DBus.Error.NoReply\0"
"org.freedesktop.DBus.Error.BadAddress\0"
"org.freedesktop.DBus.Error.NotSupported\0"
"org.freedesktop.DBus.Error.LimitsExceeded\0"
"org.freedesktop.DBus.Error.AccessDenied\0"
"org.freedesktop.DBus.Error.NoServer\0"
"org.freedesktop.DBus.Error.Timeout\0"
"org.freedesktop.DBus.Error.NoNetwork\0"
"org.freedesktop.DBus.Error.AddressInUse\0"
"org.freedesktop.DBus.Error.Disconnected\0"
"org.freedesktop.DBus.Error.InvalidArgs\0"
"org.freedesktop.DBus.Error.UnknownMethod\0"
"org.freedesktop.DBus.Error.TimedOut\0"
"org.freedesktop.DBus.Error.InvalidSignature\0"
"org.freedesktop.DBus.Error.UnknownInterface\0"
"com.trolltech.QtDBus.Error.InternalError\0"
"org.freedesktop.DBus.Error.UnknownObject\0"
"com.trolltech.QtDBus.Error.InvalidService\0"
"com.trolltech.QtDBus.Error.InvalidObjectPath\0"
"com.trolltech.QtDBus.Error.InvalidInterface\0"
"com.trolltech.QtDBus.Error.InvalidMember\0"
"\0";
static const int errorMessages_indices[] = {
0, 6, 40, 76, 118, 153, 191, 231,
273, 313, 349, 384, 421, 461, 501, 540,
581, 617, 661, 705, 746, 787, 829, 874,
918, 0
static const struct ErrorTblData {
const QDBusError::ErrorType code;
const char* name;
} ErrorTbl[] = {
{ QDBusError::Other, "other\0" },
{ QDBusError::Failed, "org.freedesktop.DBus.Error.Failed\0" },
{ QDBusError::NoMemory, "org.freedesktop.DBus.Error.NoMemory\0" },
{ QDBusError::ServiceUnknown, "org.freedesktop.DBus.Error.ServiceUnknown\0" },
{ QDBusError::NoReply, "org.freedesktop.DBus.Error.NoReply\0" },
{ QDBusError::BadAddress, "org.freedesktop.DBus.Error.BadAddress\0" },
{ QDBusError::NotSupported, "org.freedesktop.DBus.Error.NotSupported\0" },
{ QDBusError::LimitsExceeded, "org.freedesktop.DBus.Error.LimitsExceeded\0" },
{ QDBusError::AccessDenied, "org.freedesktop.DBus.Error.AccessDenied\0" },
{ QDBusError::NoServer, "org.freedesktop.DBus.Error.NoServer\0" },
{ QDBusError::Timeout, "org.freedesktop.DBus.Error.Timeout\0" },
{ QDBusError::NoNetwork, "org.freedesktop.DBus.Error.NoNetwork\0" },
{ QDBusError::AddressInUse, "org.freedesktop.DBus.Error.AddressInUse\0" },
{ QDBusError::Disconnected, "org.freedesktop.DBus.Error.Disconnected\0" },
{ QDBusError::InvalidArgs, "org.freedesktop.DBus.Error.InvalidArgs\0" },
{ QDBusError::UnknownMethod, "org.freedesktop.DBus.Error.UnknownMethod\0" },
{ QDBusError::TimedOut, "org.freedesktop.DBus.Error.TimedOut\0" },
{ QDBusError::InvalidSignature, "org.freedesktop.DBus.Error.InvalidSignature\0" },
{ QDBusError::UnknownInterface, "org.freedesktop.DBus.Error.UnknownInterface\0" },
{ QDBusError::InternalError, "com.trolltech.QtDBus.Error.InternalError\0" },
{ QDBusError::UnknownObject, "org.freedesktop.DBus.Error.UnknownObject\0" },
{ QDBusError::InvalidService, "com.trolltech.QtDBus.Error.InvalidService\0" },
{ QDBusError::InvalidObjectPath, "com.trolltech.QtDBus.Error.InvalidObjectPath\0" },
{ QDBusError::InvalidInterface, "com.trolltech.QtDBus.Error.InvalidInterface\0" },
{ QDBusError::InvalidMember, "com.trolltech.QtDBus.Error.InvalidMember\0" },
};
static const int errorMessages_count = sizeof errorMessages_indices /
sizeof errorMessages_indices[0];
static const qint16 ErrorTblSize = sizeof(ErrorTbl) / sizeof(ErrorTblData);
static inline const char *getError(QDBusError::ErrorType code)
{
int intcode = qBound(0, int(code) - int(QDBusError::Other), errorMessages_count);
return errorMessages_string + errorMessages_indices[intcode];
for (qint16 i = 0; i < ErrorTblSize; i++) {
if (ErrorTbl[i].code == code) {
return ErrorTbl[i].name;
}
}
return ErrorTbl[0].name;
}
static inline QDBusError::ErrorType getError(const char *name)
{
if (!name || !*name)
return QDBusError::NoError;
for (int i = 0; i < errorMessages_count; ++i)
if (strcmp(name, errorMessages_string + errorMessages_indices[i]) == 0)
return QDBusError::ErrorType(i + int(QDBusError::Other));
for (qint16 i = 0; i < ErrorTblSize; i++) {
if (strcmp(ErrorTbl[i].name, name) == 0) {
return ErrorTbl[i].code;
}
}
return QDBusError::Other;
}