109 lines
3.1 KiB
Python
109 lines
3.1 KiB
Python
# SPDX-FileCopyrightText: 2024 geisserml <geisserml@gmail.com>
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# SPDX-License-Identifier: Apache-2.0 OR BSD-3-Clause
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# TODO test-confirm filter and info params
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from enum import Enum
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import pypdfium2._helpers as pdfium
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import pypdfium2.raw as pdfium_c
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import pypdfium2.internal as pdfium_i
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# TODO? consider dotted access
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from pypdfium2._cli._parsers import (
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add_input,
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add_n_digits,
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get_input,
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round_list,
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)
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class InfoParams (Enum):
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pos = 0
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imageinfo = 1
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def attach(parser):
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add_input(parser, pages=True)
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add_n_digits(parser)
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# TODO think out strategy for choices (see https://github.com/python/cpython/issues/69247)
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obj_types = list( pdfium_i.ObjectTypeToConst.keys() )
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parser.add_argument(
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"--filter",
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nargs = "+",
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metavar = "T",
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choices = obj_types,
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help = f"Object types to include. Choices: {obj_types}",
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)
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parser.add_argument(
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"--max-depth",
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type = int,
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default = 2,
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help = "Maximum recursion depth to consider when descending into Form XObjects.",
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)
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parser.add_argument(
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"--info",
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nargs = "*",
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type = lambda s: InfoParams[s.lower()],
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default = (InfoParams.pos, InfoParams.imageinfo),
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help = "Object details to show (pos, imageinfo).",
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)
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def print_img_metadata(metadata, pad=""):
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for attr in pdfium_c.FPDF_IMAGEOBJ_METADATA.__slots__:
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value = getattr(metadata, attr)
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if attr == "colorspace":
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value = pdfium_i.ColorspaceToStr.get(value)
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elif attr == "marked_content_id" and value == -1:
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continue
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print(pad + f"{attr}: {value}\n", end="")
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def main(args):
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pdf = get_input(args)
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# if no filter is given, leave it at None (make a difference in case of unhandled object types)
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if args.filter:
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args.filter = [pdfium_i.ObjectTypeToConst[t] for t in args.filter]
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show_pos = (InfoParams.pos in args.info)
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show_imageinfo = (InfoParams.imageinfo in args.info)
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total_count = 0
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for i in args.pages:
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page = pdf[i]
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obj_searcher = page.get_objects(
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filter = args.filter,
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max_depth = args.max_depth,
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)
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preamble = f"# Page {i+1}\n"
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count = 0
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for obj in obj_searcher:
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pad_0 = " " * obj.level
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pad_1 = pad_0 + " "
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print(preamble + pad_0 + pdfium_i.ObjectTypeToStr.get(obj.type))
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if show_pos:
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pos = round_list(obj.get_pos(), args.n_digits)
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print(pad_1 + f"Position: {pos}")
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# TODO? also call get_size() for coverage
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if show_imageinfo and isinstance(obj, pdfium.PdfImage):
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print(pad_1 + f"Filters: {obj.get_filters()}")
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metadata = obj.get_metadata()
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print_img_metadata(metadata, pad=pad_1)
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count += 1
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preamble = ""
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if count > 0:
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print(f"-> Count: {count}\n")
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total_count += count
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if total_count > 0:
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print(f"-> Total count: {total_count}")
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