comparison mercurial/error.py @ 31959:b445a3f00528

stdio: add machinery to identify failed stdout/stderr writes

Mercurial currently fails to notice failures to write to stdout or
stderr. A correctly functioning command line tool should detect
this and exit with an error code.

To achieve this, we need a little extra plumbing, which we start
adding here.

31958:de5c9d0e02ea

class CapabilityError(RepoError):
    pass

class RequirementError(RepoError):
    """Exception raised if .hg/requires has an unknown entry."""

class UnsupportedMergeRecords(Abort):
    def __init__(self, recordtypes):
        from .i18n import _
        self.recordtypes = sorted(recordtypes)

31959:b445a3f00528

class CapabilityError(RepoError):
    pass

class RequirementError(RepoError):
    """Exception raised if .hg/requires has an unknown entry."""

class StdioError(IOError):
    """Raised if I/O to stdout or stderr fails"""

    def __init__(self, err):
        IOError.__init__(self, err.errno, err.strerror)

class UnsupportedMergeRecords(Abort):
    def __init__(self, recordtypes):
        from .i18n import _
        self.recordtypes = sorted(recordtypes)