mercurial/mail.py

51286:81224afd938d

import time

from typing import (
    Any,
    List,
    Tuple,
    Union,
)

from .i18n import _

        )
        self.file = new_socket.makefile('rb')
        return new_socket


def _pyhastls():
    # type: () -> bool
    """Returns true iff Python has TLS support, false otherwise."""
    try:
        import ssl

        getattr(ssl, 'HAS_TLS', False)

            raise error.Abort(
                _(b'%r specified as email transport, but not in PATH') % command
            )


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='plain', display=False):
    # type: (bytes, str, bool) -> email.message.Message
    """Return MIME message suitable for a patch.
    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."""

            pass

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


def mimetextqp(body, subtype, charset):
    # type: (bytes, str, 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_payload(body, cs)

    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')
    ]

        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!"""

                    )
    # 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, str, List[str]) -> str
    addr = encoding.strtolocal(addr)
    name = headencode(ui, name, charsets)
    try:
        acc, dom = addr.split(b'@')
        acc.decode('ascii')

        except UnicodeDecodeError:
            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, 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:

            r = _addressencode(ui, name, addr, charsets)
            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)

Generator = email.generator.BytesGenerator


def parse(fp):
    # type: (Any) -> email.message.Message
    ep = email.parser.Parser()
    # disable the "universal newlines" mode, which isn't binary safe.
    # I have no idea if ascii/surrogateescape is correct, but that's
    # what the standard Python email parser does.
    fp = io.TextIOWrapper(

        return ep.parse(fp)
    finally:
        fp.detach()


def parsebytes(data):
    # type: (bytes) -> email.message.Message
    ep = email.parser.BytesParser()
    return ep.parsebytes(data)


def headdecode(s):
    # type: (Union[email.header.Header, bytes]) -> bytes
    '''Decodes RFC-2047 header'''
    uparts = []
    for part, charset in email.header.decode_header(s):
        if charset is not None:
            try:

51287:f15cb5111a1e

import time

from typing import (
    Any,
    List,
    Optional,
    Tuple,
    Union,
)

from .i18n import _

        )
        self.file = new_socket.makefile('rb')
        return new_socket


def _pyhastls() -> bool:
    """Returns true iff Python has TLS support, false otherwise."""
    try:
        import ssl

        getattr(ssl, 'HAS_TLS', False)

            raise error.Abort(
                _(b'%r specified as email transport, but not in PATH') % command
            )


def codec2iana(cs: 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: bytes,
    subtype: str = 'plain',
    display: bool = False,
) -> email.message.Message:
    """Return MIME message suitable for a patch.
    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."""

            pass

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


def mimetextqp(
    body: bytes, subtype: str, charset: 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_payload(body, cs)

    return msg


def _charsets(ui: 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')
    ]

        if cs not in charsets:
            charsets.append(cs)
    return [cs for cs in charsets if not cs.endswith('ascii')]


def _encode(ui: Any, s: bytes, charsets: 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!"""

                    )
    # if ascii, or all conversion attempts fail, send (broken) ascii
    return s, 'us-ascii'


def headencode(
    ui: Any,
    s: Union[bytes, str],
    charsets: Optional[List[str]] = None,
    display: bool = False,
) -> 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: Any, name: str, addr: str, charsets: Optional[List[str]] = None
) -> str:
    addr = encoding.strtolocal(addr)
    name = headencode(ui, name, charsets)
    try:
        acc, dom = addr.split(b'@')
        acc.decode('ascii')

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


def addressencode(
    ui: Any,
    address: bytes,
    charsets: Optional[List[str]] = None,
    display: bool = False,
) -> 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, addr, charsets)


def addrlistencode(
    ui: Any,
    addrs: List[bytes],
    charsets: Optional[List[str]] = None,
    display: bool = False,
) -> 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:

            r = _addressencode(ui, name, addr, charsets)
            result.append(r)
    return result


def mimeencode(
    ui: Any,
    s: bytes,
    charsets: Optional[List[str]] = None,
    display: bool = False,
) -> 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)

Generator = email.generator.BytesGenerator


def parse(fp: Any) -> email.message.Message:
    ep = email.parser.Parser()
    # disable the "universal newlines" mode, which isn't binary safe.
    # I have no idea if ascii/surrogateescape is correct, but that's
    # what the standard Python email parser does.
    fp = io.TextIOWrapper(

        return ep.parse(fp)
    finally:
        fp.detach()


def parsebytes(data: bytes) -> email.message.Message:
    ep = email.parser.BytesParser()
    return ep.parsebytes(data)


def headdecode(s: Union[email.header.Header, bytes]) -> bytes:
    '''Decodes RFC-2047 header'''
    uparts = []
    for part, charset in email.header.decode_header(s):
        if charset is not None:
            try: