Library import 16 (#2433)

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1 files changed, 152 insertions, 0 deletions

diff --git a/contrib/tools/python3/Lib/email/mime/image.py b/contrib/tools/python3/Lib/email/mime/image.py
new file mode 100644
index 0000000000..4b7f2f9cba
--- /dev/null
+++ b/contrib/tools/python3/Lib/email/mime/image.py
@@ -0,0 +1,152 @@
+# Copyright (C) 2001-2006 Python Software Foundation
+# Author: Barry Warsaw
+# Contact: email-sig@python.org
+
+"""Class representing image/* type MIME documents."""
+
+__all__ = ['MIMEImage']
+
+from email import encoders
+from email.mime.nonmultipart import MIMENonMultipart
+
+
+class MIMEImage(MIMENonMultipart):
+    """Class for generating image/* type MIME documents."""
+
+    def __init__(self, _imagedata, _subtype=None,
+                 _encoder=encoders.encode_base64, *, policy=None, **_params):
+        """Create an image/* type MIME document.
+
+        _imagedata contains the bytes for the raw image data.  If the data
+        type can be detected (jpeg, png, gif, tiff, rgb, pbm, pgm, ppm,
+        rast, xbm, bmp, webp, and exr attempted), then the subtype will be
+        automatically included in the Content-Type header. Otherwise, you can
+        specify the specific image subtype via the _subtype parameter.
+
+        _encoder is a function which will perform the actual encoding for
+        transport of the image data.  It takes one argument, which is this
+        Image instance.  It should use get_payload() and set_payload() to
+        change the payload to the encoded form.  It should also add any
+        Content-Transfer-Encoding or other headers to the message as
+        necessary.  The default encoding is Base64.
+
+        Any additional keyword arguments are passed to the base class
+        constructor, which turns them into parameters on the Content-Type
+        header.
+        """
+        _subtype = _what(_imagedata) if _subtype is None else _subtype
+        if _subtype is None:
+            raise TypeError('Could not guess image MIME subtype')
+        MIMENonMultipart.__init__(self, 'image', _subtype, policy=policy,
+                                  **_params)
+        self.set_payload(_imagedata)
+        _encoder(self)
+
+
+_rules = []
+
+
+# Originally from the imghdr module.
+def _what(data):
+    for rule in _rules:
+        if res := rule(data):
+            return res
+    else:
+        return None
+
+
+def rule(rulefunc):
+    _rules.append(rulefunc)
+    return rulefunc
+
+
+@rule
+def _jpeg(h):
+    """JPEG data with JFIF or Exif markers; and raw JPEG"""
+    if h[6:10] in (b'JFIF', b'Exif'):
+        return 'jpeg'
+    elif h[:4] == b'\xff\xd8\xff\xdb':
+        return 'jpeg'
+
+
+@rule
+def _png(h):
+    if h.startswith(b'\211PNG\r\n\032\n'):
+        return 'png'
+
+
+@rule
+def _gif(h):
+    """GIF ('87 and '89 variants)"""
+    if h[:6] in (b'GIF87a', b'GIF89a'):
+        return 'gif'
+
+
+@rule
+def _tiff(h):
+    """TIFF (can be in Motorola or Intel byte order)"""
+    if h[:2] in (b'MM', b'II'):
+        return 'tiff'
+
+
+@rule
+def _rgb(h):
+    """SGI image library"""
+    if h.startswith(b'\001\332'):
+        return 'rgb'
+
+
+@rule
+def _pbm(h):
+    """PBM (portable bitmap)"""
+    if len(h) >= 3 and \
+            h[0] == ord(b'P') and h[1] in b'14' and h[2] in b' \t\n\r':
+        return 'pbm'
+
+
+@rule
+def _pgm(h):
+    """PGM (portable graymap)"""
+    if len(h) >= 3 and \
+            h[0] == ord(b'P') and h[1] in b'25' and h[2] in b' \t\n\r':
+        return 'pgm'
+
+
+@rule
+def _ppm(h):
+    """PPM (portable pixmap)"""
+    if len(h) >= 3 and \
+            h[0] == ord(b'P') and h[1] in b'36' and h[2] in b' \t\n\r':
+        return 'ppm'
+
+
+@rule
+def _rast(h):
+    """Sun raster file"""
+    if h.startswith(b'\x59\xA6\x6A\x95'):
+        return 'rast'
+
+
+@rule
+def _xbm(h):
+    """X bitmap (X10 or X11)"""
+    if h.startswith(b'#define '):
+        return 'xbm'
+
+
+@rule
+def _bmp(h):
+    if h.startswith(b'BM'):
+        return 'bmp'
+
+
+@rule
+def _webp(h):
+    if h.startswith(b'RIFF') and h[8:12] == b'WEBP':
+        return 'webp'
+
+
+@rule
+def _exr(h):
+    if h.startswith(b'\x76\x2f\x31\x01'):
+        return 'exr'