WvStreams
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A class for managing error numbers and strings. More...
#include <wverror.h>
Public Member Functions | |
virtual bool | isok () const |
By default, returns true if geterr() == 0. | |
virtual int | geterr () const |
If isok() is false, return the system error number corresponding to the error, -1 for a special error string (which you can obtain with errstr()) or 0 on end of file. | |
virtual WvString | errstr () const |
virtual void | seterr (int _errnum) |
Set the errnum variable -- we have an error. | |
void | seterr (WvStringParm specialerr) |
void | seterr (WVSTRING_FORMAT_DECL) |
void | seterr_both (int _errnum, WvStringParm specialerr) |
void | seterr_both (int _errnum, WVSTRING_FORMAT_DECL) |
void | seterr (const WvErrorBase &err) |
void | noerr () |
Reset our error state - there's no error condition anymore. | |
Static Public Member Functions | |
static WvString | strerror (int errnum) |
A replacement for the operating system ::strerror() function that can map more kinds of error strings (especially in win32). | |
Protected Attributes | |
int | errnum |
WvString | errstring |
A class for managing error numbers and strings.
It can have either a system error value, like those defined in errno.h, or an arbitrary error string. In either case, it can return a string representation of the error message.
This object is most useful for using as a base class of your own class, for historical/backwards compatibility reasons. Consider using a WvError instead, and making it a member of your class instead of a parent.
virtual bool WvErrorBase::isok | ( | ) | const [inline, virtual] |
By default, returns true if geterr() == 0.
Might be overridden so that isok() == false even though no error code has been specified.
Reimplemented in WvEncoderStream, WvReadLineStream, WvTCPConn, WvNullListener, WvFdStream, WvLog, WvStream, WvStreamClone, WvSSLStream, IWvStream, WvDBusServer, WvDSAKey, WvTimeStream, WvBufStream, WvListener, WvTimeoutStream, WvIStreamList, and _WvConStream.
Definition at line 39 of file wverror.h.
Referenced by WvGlob::set().
virtual int WvErrorBase::geterr | ( | ) | const [inline, virtual] |
If isok() is false, return the system error number corresponding to the error, -1 for a special error string (which you can obtain with errstr()) or 0 on end of file.
If isok() is true, returns an undefined number.
Reimplemented in WvStreamClone, and WvDBusServer.
Definition at line 48 of file wverror.h.
Referenced by UniIniGen::commit(), UniFileSystemGen::get(), WvStreamClone::geterr(), WvEncoderStream::isok(), UniConfDaemon::listen(), UniIniGen::refresh(), WvStream::seterr(), and WvMagicCircle::WvMagicCircle().
void WvErrorBase::seterr | ( | int | _errnum | ) | [virtual] |
Set the errnum variable -- we have an error.
If called more than once, seterr() doesn't change the error code away from the previous one. That way, we remember the _original_ cause of our problems.
Subclasses may want to override seterr(int) to shut themselves down (eg. WvStream::close()) when an error condition is set.
Note that seterr(WvString) will call seterr(-1).
Reimplemented in WvStream.
Definition at line 144 of file wverror.cc.
Referenced by WvUnixListener::accept(), WvTCPListener::accept(), WvDSAKey::getpem(), WvGlob::set(), WvMagicCircle::WvMagicCircle(), WvPam::WvPam(), WvShmZone::WvShmZone(), and WvTCPListener::WvTCPListener().
void WvErrorBase::noerr | ( | ) | [inline] |