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-rw-r--r--env/lib/python3.10/site-packages/PIL/PpmImagePlugin.py342
1 files changed, 0 insertions, 342 deletions
diff --git a/env/lib/python3.10/site-packages/PIL/PpmImagePlugin.py b/env/lib/python3.10/site-packages/PIL/PpmImagePlugin.py
deleted file mode 100644
index 392771d..0000000
--- a/env/lib/python3.10/site-packages/PIL/PpmImagePlugin.py
+++ /dev/null
@@ -1,342 +0,0 @@
-#
-# The Python Imaging Library.
-# $Id$
-#
-# PPM support for PIL
-#
-# History:
-# 96-03-24 fl Created
-# 98-03-06 fl Write RGBA images (as RGB, that is)
-#
-# Copyright (c) Secret Labs AB 1997-98.
-# Copyright (c) Fredrik Lundh 1996.
-#
-# See the README file for information on usage and redistribution.
-#
-
-
-from . import Image, ImageFile
-from ._binary import i16be as i16
-from ._binary import o8
-from ._binary import o32le as o32
-
-#
-# --------------------------------------------------------------------
-
-b_whitespace = b"\x20\x09\x0a\x0b\x0c\x0d"
-
-MODES = {
- # standard
- b"P1": "1",
- b"P2": "L",
- b"P3": "RGB",
- b"P4": "1",
- b"P5": "L",
- b"P6": "RGB",
- # extensions
- b"P0CMYK": "CMYK",
- # PIL extensions (for test purposes only)
- b"PyP": "P",
- b"PyRGBA": "RGBA",
- b"PyCMYK": "CMYK",
-}
-
-
-def _accept(prefix):
- return prefix[0:1] == b"P" and prefix[1] in b"0123456y"
-
-
-##
-# Image plugin for PBM, PGM, and PPM images.
-
-
-class PpmImageFile(ImageFile.ImageFile):
-
- format = "PPM"
- format_description = "Pbmplus image"
-
- def _read_magic(self):
- magic = b""
- # read until whitespace or longest available magic number
- for _ in range(6):
- c = self.fp.read(1)
- if not c or c in b_whitespace:
- break
- magic += c
- return magic
-
- def _read_token(self):
- token = b""
- while len(token) <= 10: # read until next whitespace or limit of 10 characters
- c = self.fp.read(1)
- if not c:
- break
- elif c in b_whitespace: # token ended
- if not token:
- # skip whitespace at start
- continue
- break
- elif c == b"#":
- # ignores rest of the line; stops at CR, LF or EOF
- while self.fp.read(1) not in b"\r\n":
- pass
- continue
- token += c
- if not token:
- # Token was not even 1 byte
- raise ValueError("Reached EOF while reading header")
- elif len(token) > 10:
- raise ValueError(f"Token too long in file header: {token.decode()}")
- return token
-
- def _open(self):
- magic_number = self._read_magic()
- try:
- mode = MODES[magic_number]
- except KeyError:
- raise SyntaxError("not a PPM file")
-
- if magic_number in (b"P1", b"P4"):
- self.custom_mimetype = "image/x-portable-bitmap"
- elif magic_number in (b"P2", b"P5"):
- self.custom_mimetype = "image/x-portable-graymap"
- elif magic_number in (b"P3", b"P6"):
- self.custom_mimetype = "image/x-portable-pixmap"
-
- maxval = None
- decoder_name = "raw"
- if magic_number in (b"P1", b"P2", b"P3"):
- decoder_name = "ppm_plain"
- for ix in range(3):
- token = int(self._read_token())
- if ix == 0: # token is the x size
- xsize = token
- elif ix == 1: # token is the y size
- ysize = token
- if mode == "1":
- self.mode = "1"
- rawmode = "1;I"
- break
- else:
- self.mode = rawmode = mode
- elif ix == 2: # token is maxval
- maxval = token
- if not 0 < maxval < 65536:
- raise ValueError(
- "maxval must be greater than 0 and less than 65536"
- )
- if maxval > 255 and mode == "L":
- self.mode = "I"
-
- if decoder_name != "ppm_plain":
- # If maxval matches a bit depth, use the raw decoder directly
- if maxval == 65535 and mode == "L":
- rawmode = "I;16B"
- elif maxval != 255:
- decoder_name = "ppm"
-
- args = (rawmode, 0, 1) if decoder_name == "raw" else (rawmode, maxval)
- self._size = xsize, ysize
- self.tile = [(decoder_name, (0, 0, xsize, ysize), self.fp.tell(), args)]
-
-
-#
-# --------------------------------------------------------------------
-
-
-class PpmPlainDecoder(ImageFile.PyDecoder):
- _pulls_fd = True
-
- def _read_block(self):
- return self.fd.read(ImageFile.SAFEBLOCK)
-
- def _find_comment_end(self, block, start=0):
- a = block.find(b"\n", start)
- b = block.find(b"\r", start)
- return min(a, b) if a * b > 0 else max(a, b) # lowest nonnegative index (or -1)
-
- def _ignore_comments(self, block):
- if self._comment_spans:
- # Finish current comment
- while block:
- comment_end = self._find_comment_end(block)
- if comment_end != -1:
- # Comment ends in this block
- # Delete tail of comment
- block = block[comment_end + 1 :]
- break
- else:
- # Comment spans whole block
- # So read the next block, looking for the end
- block = self._read_block()
-
- # Search for any further comments
- self._comment_spans = False
- while True:
- comment_start = block.find(b"#")
- if comment_start == -1:
- # No comment found
- break
- comment_end = self._find_comment_end(block, comment_start)
- if comment_end != -1:
- # Comment ends in this block
- # Delete comment
- block = block[:comment_start] + block[comment_end + 1 :]
- else:
- # Comment continues to next block(s)
- block = block[:comment_start]
- self._comment_spans = True
- break
- return block
-
- def _decode_bitonal(self):
- """
- This is a separate method because in the plain PBM format, all data tokens are
- exactly one byte, so the inter-token whitespace is optional.
- """
- data = bytearray()
- total_bytes = self.state.xsize * self.state.ysize
-
- while len(data) != total_bytes:
- block = self._read_block() # read next block
- if not block:
- # eof
- break
-
- block = self._ignore_comments(block)
-
- tokens = b"".join(block.split())
- for token in tokens:
- if token not in (48, 49):
- raise ValueError(f"Invalid token for this mode: {bytes([token])}")
- data = (data + tokens)[:total_bytes]
- invert = bytes.maketrans(b"01", b"\xFF\x00")
- return data.translate(invert)
-
- def _decode_blocks(self, maxval):
- data = bytearray()
- max_len = 10
- out_byte_count = 4 if self.mode == "I" else 1
- out_max = 65535 if self.mode == "I" else 255
- bands = Image.getmodebands(self.mode)
- total_bytes = self.state.xsize * self.state.ysize * bands * out_byte_count
-
- half_token = False
- while len(data) != total_bytes:
- block = self._read_block() # read next block
- if not block:
- if half_token:
- block = bytearray(b" ") # flush half_token
- else:
- # eof
- break
-
- block = self._ignore_comments(block)
-
- if half_token:
- block = half_token + block # stitch half_token to new block
-
- tokens = block.split()
-
- if block and not block[-1:].isspace(): # block might split token
- half_token = tokens.pop() # save half token for later
- if len(half_token) > max_len: # prevent buildup of half_token
- raise ValueError(
- f"Token too long found in data: {half_token[:max_len + 1]}"
- )
-
- for token in tokens:
- if len(token) > max_len:
- raise ValueError(
- f"Token too long found in data: {token[:max_len + 1]}"
- )
- value = int(token)
- if value > maxval:
- raise ValueError(f"Channel value too large for this mode: {value}")
- value = round(value / maxval * out_max)
- data += o32(value) if self.mode == "I" else o8(value)
- if len(data) == total_bytes: # finished!
- break
- return data
-
- def decode(self, buffer):
- self._comment_spans = False
- if self.mode == "1":
- data = self._decode_bitonal()
- rawmode = "1;8"
- else:
- maxval = self.args[-1]
- data = self._decode_blocks(maxval)
- rawmode = "I;32" if self.mode == "I" else self.mode
- self.set_as_raw(bytes(data), rawmode)
- return -1, 0
-
-
-class PpmDecoder(ImageFile.PyDecoder):
- _pulls_fd = True
-
- def decode(self, buffer):
- data = bytearray()
- maxval = self.args[-1]
- in_byte_count = 1 if maxval < 256 else 2
- out_byte_count = 4 if self.mode == "I" else 1
- out_max = 65535 if self.mode == "I" else 255
- bands = Image.getmodebands(self.mode)
- while len(data) < self.state.xsize * self.state.ysize * bands * out_byte_count:
- pixels = self.fd.read(in_byte_count * bands)
- if len(pixels) < in_byte_count * bands:
- # eof
- break
- for b in range(bands):
- value = (
- pixels[b] if in_byte_count == 1 else i16(pixels, b * in_byte_count)
- )
- value = min(out_max, round(value / maxval * out_max))
- data += o32(value) if self.mode == "I" else o8(value)
- rawmode = "I;32" if self.mode == "I" else self.mode
- self.set_as_raw(bytes(data), rawmode)
- return -1, 0
-
-
-#
-# --------------------------------------------------------------------
-
-
-def _save(im, fp, filename):
- if im.mode == "1":
- rawmode, head = "1;I", b"P4"
- elif im.mode == "L":
- rawmode, head = "L", b"P5"
- elif im.mode == "I":
- rawmode, head = "I;16B", b"P5"
- elif im.mode in ("RGB", "RGBA"):
- rawmode, head = "RGB", b"P6"
- else:
- raise OSError(f"cannot write mode {im.mode} as PPM")
- fp.write(head + b"\n%d %d\n" % im.size)
- if head == b"P6":
- fp.write(b"255\n")
- elif head == b"P5":
- if rawmode == "L":
- fp.write(b"255\n")
- else:
- fp.write(b"65535\n")
- ImageFile._save(im, fp, [("raw", (0, 0) + im.size, 0, (rawmode, 0, 1))])
-
- # ALTERNATIVE: save via builtin debug function
- # im._dump(filename)
-
-
-#
-# --------------------------------------------------------------------
-
-
-Image.register_open(PpmImageFile.format, PpmImageFile, _accept)
-Image.register_save(PpmImageFile.format, _save)
-
-Image.register_decoder("ppm", PpmDecoder)
-Image.register_decoder("ppm_plain", PpmPlainDecoder)
-
-Image.register_extensions(PpmImageFile.format, [".pbm", ".pgm", ".ppm", ".pnm"])
-
-Image.register_mime(PpmImageFile.format, "image/x-portable-anymap")
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