mercurial/mail.py

43625:8d9e2c2b6058

                _(b'%r specified as email transport, but not in PATH') % method
            )


def codec2iana(cs):
    # type: (bytes) -> bytes
    ''''''
    cs = pycompat.sysbytes(
        email.charset.Charset(
            cs  # pytype: disable=wrong-arg-types
        ).input_charset.lower()
    )

    # "latin1" normalizes to "iso8859-1", standard calls for "iso-8859-1"
    if cs.startswith(b"iso") and not cs.startswith(b"iso-"):
        return b"iso-" + cs[3:]
    return cs


def mimetextpatch(s, subtype=b'plain', display=False):
    # type: (bytes, bytes, bool) -> email.message.Message

    Charset will be detected by first trying to decode as us-ascii, then utf-8,
    and finally the global encodings. If all those fail, fall back to
    ISO-8859-1, an encoding with that allows all byte sequences.
    Transfer encodings will be used if necessary.'''

    cs = [b'us-ascii', b'utf-8', encoding.encoding, encoding.fallbackencoding]
    if display:
        cs = [b'us-ascii']
    for charset in cs:
        try:
            s.decode(pycompat.sysstr(charset))
            return mimetextqp(s, subtype, codec2iana(charset))
        except UnicodeDecodeError:
            pass

    return mimetextqp(s, subtype, b"iso-8859-1")


def mimetextqp(body, subtype, charset):
    # type: (bytes, bytes, bytes) -> email.message.Message
    '''Return MIME message.
    Quoted-printable transfer encoding will be used if necessary.
    '''
    # Experimentally charset is okay as a bytes even if the type
    # stubs disagree.
    cs = email.charset.Charset(charset)  # pytype: disable=wrong-arg-types
    msg = email.message.Message()
    msg.set_type(pycompat.sysstr(b'text/' + subtype))

    for line in body.splitlines():
        if len(line) > 950:

    return msg


def _charsets(ui):
    # type: (Any) -> List[bytes]
    '''Obtains charsets to send mail parts not containing patches.'''
    charsets = [
        cs.lower() for cs in ui.configlist(b'email', b'charsets')
    ]  # type: List[bytes]
    fallbacks = [
        encoding.fallbackencoding.lower(),
        encoding.encoding.lower(),
        b'utf-8',
    ]  # type: List[bytes]
    for cs in fallbacks:  # find unique charsets while keeping order
        if cs not in charsets:
            charsets.append(cs)
    return [cs for cs in charsets if not cs.endswith(b'ascii')]


def _encode(ui, s, charsets):
    # type: (Any, bytes, List[bytes]) -> Tuple[bytes, bytes]
    '''Returns (converted) string, charset tuple.
    Finds out best charset by cycling through sendcharsets in descending
    order. Tries both encoding and fallbackencoding for input. Only as
    last resort send as is in fake ascii.
    Caveat: Do not use for mail parts containing patches!'''

        # We have unicode data, which we need to try and encode to
        # some reasonable-ish encoding. Try the encodings the user
        # wants, and fall back to garbage-in-ascii.
        for ocs in sendcharsets:
            try:
                return s.encode(pycompat.sysstr(ocs)), ocs
            except UnicodeEncodeError:
                pass
            except LookupError:
                ui.warn(_(b'ignoring invalid sendcharset: %s\n') % ocs)
        else:
            # Everything failed, ascii-armor what we've got and send it.
            return s.encode('ascii', 'backslashreplace'), b'us-ascii'
    # We have a bytes of unknown encoding. We'll try and guess a valid
    # encoding, falling back to pretending we had ascii even though we
    # know that's wrong.
    try:
        s.decode('ascii')

                u = s.decode(ics)
            except UnicodeDecodeError:
                continue
            for ocs in sendcharsets:
                try:
                    return u.encode(pycompat.sysstr(ocs)), ocs
                except UnicodeEncodeError:
                    pass
                except LookupError:
                    ui.warn(_(b'ignoring invalid sendcharset: %s\n') % ocs)
    # if ascii, or all conversion attempts fail, send (broken) ascii
    return s, b'us-ascii'


def headencode(ui, s, charsets=None, display=False):
    # type: (Any, Union[bytes, str], List[bytes], bool) -> str
    '''Returns RFC-2047 compliant header from given string.'''
    if not display:
        # split into words?
        s, cs = _encode(ui, s, charsets)
        return email.header.Header(
            s, cs  # pytype: disable=wrong-arg-types
        ).encode()
    return encoding.strfromlocal(s)


def _addressencode(ui, name, addr, charsets=None):
    # type: (Any, str, bytes, List[bytes]) -> str
    assert isinstance(addr, bytes)
    name = headencode(ui, name, charsets)
    try:
        acc, dom = addr.split(b'@')
        acc.decode('ascii')

            raise error.Abort(_(b'invalid local address: %s') % addr)
    return email.utils.formataddr((name, encoding.strfromlocal(addr)))


def addressencode(ui, address, charsets=None, display=False):
    # type: (Any, bytes, List[bytes], bool) -> str
    '''Turns address into RFC-2047 compliant header.'''
    if display or not address:
        return encoding.strfromlocal(address or b'')
    name, addr = email.utils.parseaddr(encoding.strfromlocal(address))
    return _addressencode(ui, name, encoding.strtolocal(addr), charsets)


def addrlistencode(ui, addrs, charsets=None, display=False):
    # type: (Any, List[bytes], List[bytes], bool) -> List[str]
    '''Turns a list of addresses into a list of RFC-2047 compliant headers.
    A single element of input list may contain multiple addresses, but output
    always has one address per item'''
    straddrs = []
    for a in addrs:

            result.append(r)
    return result


def mimeencode(ui, s, charsets=None, display=False):
    # type: (Any, bytes, List[bytes], bool) -> email.message.Message
    '''creates mime text object, encodes it if needed, and sets
    charset and transfer-encoding accordingly.'''
    cs = b'us-ascii'
    if not display:
        s, cs = _encode(ui, s, charsets)
    return mimetextqp(s, b'plain', cs)

43626:bdb0ddab7bb3

                _(b'%r specified as email transport, but not in PATH') % method
            )


def codec2iana(cs):
    # type: (str) -> str
    ''''''
    cs = email.charset.Charset(cs).input_charset.lower()

    # "latin1" normalizes to "iso8859-1", standard calls for "iso-8859-1"
    if cs.startswith("iso") and not cs.startswith("iso-"):
        return "iso-" + cs[3:]
    return cs


def mimetextpatch(s, subtype=b'plain', display=False):
    # type: (bytes, bytes, bool) -> email.message.Message

    Charset will be detected by first trying to decode as us-ascii, then utf-8,
    and finally the global encodings. If all those fail, fall back to
    ISO-8859-1, an encoding with that allows all byte sequences.
    Transfer encodings will be used if necessary.'''

    cs = [
        'us-ascii',
        'utf-8',
        pycompat.sysstr(encoding.encoding),
        pycompat.sysstr(encoding.fallbackencoding),
    ]
    if display:
        cs = ['us-ascii']
    for charset in cs:
        try:
            s.decode(charset)
            return mimetextqp(s, subtype, codec2iana(charset))
        except UnicodeDecodeError:
            pass

    return mimetextqp(s, subtype, "iso-8859-1")


def mimetextqp(body, subtype, charset):
    # type: (bytes, bytes, str) -> email.message.Message
    '''Return MIME message.
    Quoted-printable transfer encoding will be used if necessary.
    '''
    cs = email.charset.Charset(charset)
    msg = email.message.Message()
    msg.set_type(pycompat.sysstr(b'text/' + subtype))

    for line in body.splitlines():
        if len(line) > 950:

    return msg


def _charsets(ui):
    # type: (Any) -> List[str]
    '''Obtains charsets to send mail parts not containing patches.'''
    charsets = [
        pycompat.sysstr(cs.lower())
        for cs in ui.configlist(b'email', b'charsets')
    ]
    fallbacks = [
        pycompat.sysstr(encoding.fallbackencoding.lower()),
        pycompat.sysstr(encoding.encoding.lower()),
        'utf-8',
    ]
    for cs in fallbacks:  # find unique charsets while keeping order
        if cs not in charsets:
            charsets.append(cs)
    return [cs for cs in charsets if not cs.endswith('ascii')]


def _encode(ui, s, charsets):
    # type: (Any, bytes, List[str]) -> Tuple[bytes, str]
    '''Returns (converted) string, charset tuple.
    Finds out best charset by cycling through sendcharsets in descending
    order. Tries both encoding and fallbackencoding for input. Only as
    last resort send as is in fake ascii.
    Caveat: Do not use for mail parts containing patches!'''

        # We have unicode data, which we need to try and encode to
        # some reasonable-ish encoding. Try the encodings the user
        # wants, and fall back to garbage-in-ascii.
        for ocs in sendcharsets:
            try:
                return s.encode(ocs), ocs
            except UnicodeEncodeError:
                pass
            except LookupError:
                ui.warn(
                    _(b'ignoring invalid sendcharset: %s\n')
                    % pycompat.sysbytes(ocs)
                )
        else:
            # Everything failed, ascii-armor what we've got and send it.
            return s.encode('ascii', 'backslashreplace'), 'us-ascii'
    # We have a bytes of unknown encoding. We'll try and guess a valid
    # encoding, falling back to pretending we had ascii even though we
    # know that's wrong.
    try:
        s.decode('ascii')

                u = s.decode(ics)
            except UnicodeDecodeError:
                continue
            for ocs in sendcharsets:
                try:
                    return u.encode(ocs), ocs
                except UnicodeEncodeError:
                    pass
                except LookupError:
                    ui.warn(
                        _(b'ignoring invalid sendcharset: %s\n')
                        % pycompat.sysbytes(ocs)
                    )
    # if ascii, or all conversion attempts fail, send (broken) ascii
    return s, 'us-ascii'


def headencode(ui, s, charsets=None, display=False):
    # type: (Any, Union[bytes, str], List[str], bool) -> str
    '''Returns RFC-2047 compliant header from given string.'''
    if not display:
        # split into words?
        s, cs = _encode(ui, s, charsets)
        return email.header.Header(s, cs).encode()
    return encoding.strfromlocal(s)


def _addressencode(ui, name, addr, charsets=None):
    # type: (Any, str, bytes, List[str]) -> str
    assert isinstance(addr, bytes)
    name = headencode(ui, name, charsets)
    try:
        acc, dom = addr.split(b'@')
        acc.decode('ascii')

            raise error.Abort(_(b'invalid local address: %s') % addr)
    return email.utils.formataddr((name, encoding.strfromlocal(addr)))


def addressencode(ui, address, charsets=None, display=False):
    # type: (Any, bytes, List[str], bool) -> str
    '''Turns address into RFC-2047 compliant header.'''
    if display or not address:
        return encoding.strfromlocal(address or b'')
    name, addr = email.utils.parseaddr(encoding.strfromlocal(address))
    return _addressencode(ui, name, encoding.strtolocal(addr), charsets)


def addrlistencode(ui, addrs, charsets=None, display=False):
    # type: (Any, List[bytes], List[str], bool) -> List[str]
    '''Turns a list of addresses into a list of RFC-2047 compliant headers.
    A single element of input list may contain multiple addresses, but output
    always has one address per item'''
    straddrs = []
    for a in addrs:

            result.append(r)
    return result


def mimeencode(ui, s, charsets=None, display=False):
    # type: (Any, bytes, List[str], bool) -> email.message.Message
    '''creates mime text object, encodes it if needed, and sets
    charset and transfer-encoding accordingly.'''
    cs = 'us-ascii'
    if not display:
        s, cs = _encode(ui, s, charsets)
    return mimetextqp(s, b'plain', cs)