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Diffstat (limited to 'env/lib/python3.10/site-packages/PIL/IptcImagePlugin.py')
| -rw-r--r-- | env/lib/python3.10/site-packages/PIL/IptcImagePlugin.py | 230 |
1 files changed, 0 insertions, 230 deletions
diff --git a/env/lib/python3.10/site-packages/PIL/IptcImagePlugin.py b/env/lib/python3.10/site-packages/PIL/IptcImagePlugin.py deleted file mode 100644 index 0bbe506..0000000 --- a/env/lib/python3.10/site-packages/PIL/IptcImagePlugin.py +++ /dev/null @@ -1,230 +0,0 @@ -# -# The Python Imaging Library. -# $Id$ -# -# IPTC/NAA file handling -# -# history: -# 1995-10-01 fl Created -# 1998-03-09 fl Cleaned up and added to PIL -# 2002-06-18 fl Added getiptcinfo helper -# -# Copyright (c) Secret Labs AB 1997-2002. -# Copyright (c) Fredrik Lundh 1995. -# -# See the README file for information on usage and redistribution. -# -import os -import tempfile - -from . import Image, ImageFile -from ._binary import i8 -from ._binary import i16be as i16 -from ._binary import i32be as i32 -from ._binary import o8 - -COMPRESSION = {1: "raw", 5: "jpeg"} - -PAD = o8(0) * 4 - - -# -# Helpers - - -def i(c): - return i32((PAD + c)[-4:]) - - -def dump(c): - for i in c: - print("%02x" % i8(i), end=" ") - print() - - -## -# Image plugin for IPTC/NAA datastreams. To read IPTC/NAA fields -# from TIFF and JPEG files, use the <b>getiptcinfo</b> function. - - -class IptcImageFile(ImageFile.ImageFile): - - format = "IPTC" - format_description = "IPTC/NAA" - - def getint(self, key): - return i(self.info[key]) - - def field(self): - # - # get a IPTC field header - s = self.fp.read(5) - if not len(s): - return None, 0 - - tag = s[1], s[2] - - # syntax - if s[0] != 0x1C or tag[0] < 1 or tag[0] > 9: - raise SyntaxError("invalid IPTC/NAA file") - - # field size - size = s[3] - if size > 132: - raise OSError("illegal field length in IPTC/NAA file") - elif size == 128: - size = 0 - elif size > 128: - size = i(self.fp.read(size - 128)) - else: - size = i16(s, 3) - - return tag, size - - def _open(self): - - # load descriptive fields - while True: - offset = self.fp.tell() - tag, size = self.field() - if not tag or tag == (8, 10): - break - if size: - tagdata = self.fp.read(size) - else: - tagdata = None - if tag in self.info: - if isinstance(self.info[tag], list): - self.info[tag].append(tagdata) - else: - self.info[tag] = [self.info[tag], tagdata] - else: - self.info[tag] = tagdata - - # mode - layers = i8(self.info[(3, 60)][0]) - component = i8(self.info[(3, 60)][1]) - if (3, 65) in self.info: - id = i8(self.info[(3, 65)][0]) - 1 - else: - id = 0 - if layers == 1 and not component: - self.mode = "L" - elif layers == 3 and component: - self.mode = "RGB"[id] - elif layers == 4 and component: - self.mode = "CMYK"[id] - - # size - self._size = self.getint((3, 20)), self.getint((3, 30)) - - # compression - try: - compression = COMPRESSION[self.getint((3, 120))] - except KeyError as e: - raise OSError("Unknown IPTC image compression") from e - - # tile - if tag == (8, 10): - self.tile = [ - ("iptc", (compression, offset), (0, 0, self.size[0], self.size[1])) - ] - - def load(self): - - if len(self.tile) != 1 or self.tile[0][0] != "iptc": - return ImageFile.ImageFile.load(self) - - type, tile, box = self.tile[0] - - encoding, offset = tile - - self.fp.seek(offset) - - # Copy image data to temporary file - o_fd, outfile = tempfile.mkstemp(text=False) - o = os.fdopen(o_fd) - if encoding == "raw": - # To simplify access to the extracted file, - # prepend a PPM header - o.write("P5\n%d %d\n255\n" % self.size) - while True: - type, size = self.field() - if type != (8, 10): - break - while size > 0: - s = self.fp.read(min(size, 8192)) - if not s: - break - o.write(s) - size -= len(s) - o.close() - - try: - with Image.open(outfile) as _im: - _im.load() - self.im = _im.im - finally: - try: - os.unlink(outfile) - except OSError: - pass - - -Image.register_open(IptcImageFile.format, IptcImageFile) - -Image.register_extension(IptcImageFile.format, ".iim") - - -def getiptcinfo(im): - """ - Get IPTC information from TIFF, JPEG, or IPTC file. - - :param im: An image containing IPTC data. - :returns: A dictionary containing IPTC information, or None if - no IPTC information block was found. - """ - import io - - from . import JpegImagePlugin, TiffImagePlugin - - data = None - - if isinstance(im, IptcImageFile): - # return info dictionary right away - return im.info - - elif isinstance(im, JpegImagePlugin.JpegImageFile): - # extract the IPTC/NAA resource - photoshop = im.info.get("photoshop") - if photoshop: - data = photoshop.get(0x0404) - - elif isinstance(im, TiffImagePlugin.TiffImageFile): - # get raw data from the IPTC/NAA tag (PhotoShop tags the data - # as 4-byte integers, so we cannot use the get method...) - try: - data = im.tag.tagdata[TiffImagePlugin.IPTC_NAA_CHUNK] - except (AttributeError, KeyError): - pass - - if data is None: - return None # no properties - - # create an IptcImagePlugin object without initializing it - class FakeImage: - pass - - im = FakeImage() - im.__class__ = IptcImageFile - - # parse the IPTC information chunk - im.info = {} - im.fp = io.BytesIO(data) - - try: - im._open() - except (IndexError, KeyError): - pass # expected failure - - return im.info |