mirror of https://github.com/papermerge/mglib
removed pdftk dependency
Eugen Ciur
parent
9e24776ba8
commit
fa90e6b0a6
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@ -23,10 +23,6 @@ BINARY_IDENTIFY = "/usr/bin/identify"
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# Used to extract text from images/PDF files.
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BINARY_OCR = "/usr/bin/tesseract"
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# Provided by pdftk package
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# Used to reorder, cut/paste, delete pages withing PDF document
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BINARY_PDFTK = "/usr/bin/pdftk"
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# Provided by stapler
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# Used to edit PDF documents
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BINARY_STAPLER = "~/.local/bin/stapler"
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357
mglib/pdftk.py
357
mglib/pdftk.py
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@ -1,357 +0,0 @@
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import logging
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from mglib.runcmd import run
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from mglib.pdfinfo import get_pagecount
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from .conf import settings
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logger = logging.getLogger(__name__)
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#
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# Utilities around pdftk command line tool
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#
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# https://www.pdflabs.com/docs/pdftk-man-page/
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#
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def cat_ranges_for_reorder(page_count, new_order):
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"""
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Returns a list of integers. Each number in the list
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is correctly positioned (newly ordered) page.
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Examples:
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If in document with 4 pages first and second pages were
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swapped, then returned list will be:
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[2, 1, 3, 4]
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If first page was swapped with last one (also 4 paegs document)
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result list will look like:
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[4, 2, 3, 1]
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"""
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if len(new_order) != page_count:
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raise ValueError("Not enough pages specified")
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results = []
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# key = page_num
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# value = page_order
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page_map = {}
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for item in new_order:
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k = int(item['page_order'])
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v = int(item['page_num'])
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page_map[k] = v
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for number in range(1, page_count + 1):
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results.append(
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page_map[number]
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)
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return results
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def cat_ranges_for_delete(page_count, page_numbers):
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"""
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Returns a list of integers. Each number in the list
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is the number of page which will 'stay' in document.
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In other words, it returns a list with not deleted pages.
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Examples:
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If document has 22 pages (page_count=22) and page number 21 is to be
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deleted (i.e page_numbers = [21]) will return
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[1, 2, 3, 4, ..., 19, 20, 22]
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If page number 1 is to be deleted:
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[2, 3, 4, ..., 22] list will be returned.
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If page number is 22 is to be deleted:
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[1, 2, 3,..., 21] will be returned.
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With page_numbers=[1, 7, 10] and page_count=22 result
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will be:
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(2, 3, 4, 5, 6, 8, 9, 11, 12 , 13, ..., 22)
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page_numbers is a list of page numbers (starting with 1).
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"""
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results = []
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for check in page_numbers:
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if not isinstance(check, int):
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err_msg = "page_numbers must be a list of ints"
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raise ValueError(err_msg)
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for number in range(1, page_count + 1):
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if number not in page_numbers:
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results.append(number)
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return results
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def split_ranges(total, after=False, before=False):
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"""
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Given a range 1, 2, ..., total (page numbers of a doc).
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Split it in two lists.
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Example:
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Input: total = 9, after=1, before=False
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Output: list1 = [1]; list2 = [2, 3, 4, ..., 9].
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Input: total = 9; after=False, before=1
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Output: list1 = [], list2 = [1, 2, 3, 4, ..., 9]
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Input: total = 5; after=4; before=False
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Output: list1 = [1, 2, 3, 4] list2 = [5]
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Input: total = 5; after=False; before=False;
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Output: list1 = [1, 2, 3, 4, 5], list2 = []
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(it means, by default, all pages are inserted at the end of the doc)
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"""
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if after and not before:
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if not type(after) == int:
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raise ValueError(
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"argument 'after' is supposed to be an int"
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)
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list1 = list(range(1, after + 1))
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list2 = list(range(after + 1, total + 1))
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return list1, list2
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if not after and before:
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if not type(before) == int:
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raise ValueError(
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"argument 'before' is supposed to be an int"
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)
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list1 = list(range(1, before))
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list2 = list(range(before, total + 1))
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return list1, list2
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list1 = list(range(1, total + 1))
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list2 = []
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return list1, list2
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def paste_pages_into_existing_doc(
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src,
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dst,
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data_list,
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after_page_number=False,
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before_page_number=False
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):
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page_count = get_pagecount(src)
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list1, list2 = split_ranges(
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total=page_count,
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after=after_page_number,
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before=before_page_number
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)
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# notice missing A
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# Letter A is assignent to current folder and
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# pages from list1 and list2
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letters = "BCDEFGHIJKLMNOPQRSTUVWXYZ"
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letters_2_doc_map = []
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letters_pages = []
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letters_pages_before = []
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letters_pages_after = []
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letters_2_doc_map.append(
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f"A={src}"
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)
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for idx in range(0, len(data_list)):
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letter = letters[idx]
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src = data_list[idx]['src']
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pages = data_list[idx]['page_nums']
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letters_2_doc_map.append(
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f"{letter}={src}"
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)
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for p in pages:
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letters_pages.append(
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f"{letter}{p}"
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)
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for p in list1:
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letters_pages_before.append(
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f"A{p}"
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)
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for p in list2:
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letters_pages_after.append(
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f"A{p}"
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)
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cmd = [
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settings.BINARY_PDFTK,
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]
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# add A=doc1_path, B=doc2_path
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cmd.extend(letters_2_doc_map)
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cmd.append("cat")
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# existing doc pages (may be empty)
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cmd.extend(letters_pages_before)
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# newly inserted pages
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cmd.extend(letters_pages)
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# existing doc pages (may be empty)
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cmd.extend(letters_pages_after)
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cmd.append("output")
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cmd.append(dst)
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run(cmd)
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def paste_pages(
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src,
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dst,
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data_list,
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dst_doc_is_new=True,
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after_page_number=False,
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before_page_number=False
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):
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"""
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dest_doc_ep = endpoint of the doc where newly created
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file will be placed.
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src_doc_ep_list is a list of following format:
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[
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{
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'doc_ep': doc_ep,
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'page_nums': [page_num_1, page_num_2, page_num_3]
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},
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{
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'doc_ep': doc_ep,
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'page_nums': [page_num_1, page_num_2, page_num_3]
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},
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...
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]
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src_doc_ep_list is a list of documents where pages
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(with numbers page_num_1...) will be paste from.
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dst_doc_is_new = True well.. destination document was just created,
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we are pasting here cutted pages into some folder as new document.
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In this case 'after' and 'before' arguments are ignored
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dst_doc_is_new = False, pasting pages into exiting document.
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If before_page_number > 0 - paste pages before page number
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'before_page_number'
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If after_page_number > 0 - paste pages after page number
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'after_page_number'
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before_page_number argument has priority over after_page_number.
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If both before_page_number and after_page_number are < 0 - just paste
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pages at the end of the document.
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"""
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if not dst_doc_is_new:
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return paste_pages_into_existing_doc(
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src=src,
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dst=dst,
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data_list=data_list,
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after_page_number=after_page_number,
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before_page_number=before_page_number
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)
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letters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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letters_2_doc_map = []
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letters_pages = []
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for idx in range(0, len(data_list)):
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letter = letters[idx]
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src = data_list[idx]['src']
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pages = data_list[idx]['page_nums']
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letters_2_doc_map.append(
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f"{letter}={src}"
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)
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for p in pages:
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letters_pages.append(
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f"{letter}{p}"
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)
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cmd = [
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settings.BINARY_PDFTK,
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]
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# add A=doc1_path, B=doc2_path
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cmd.extend(letters_2_doc_map)
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cmd.append("cat")
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cmd.extend(letters_pages)
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cmd.append("output")
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cmd.append(dst)
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run(cmd)
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def reorder_pages(
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src, dst, new_order
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):
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"""
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new_order is a list of following format:
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[
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{'page_num': 2, page_order: 1},
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{'page_num': 1, page_order: 2},
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{'page_num': 3, page_order: 3},
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{'page_num': 4, page_order: 4},
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]
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Example above means that in current document of 4 pages,
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first page was swapped with second one.
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page_num = older page order
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page_order = current page order
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So in human language, each hash is read:
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<page_num> now should be <page_order>
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"""
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page_count = get_pagecount(src)
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cat_ranges = cat_ranges_for_reorder(
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page_count=page_count,
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new_order=new_order
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)
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cmd = [
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settings.BINARY_PDFTK,
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src,
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"cat"
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]
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for page in cat_ranges:
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cmd.append(
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str(page)
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)
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cmd.append("output")
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cmd.append(dst)
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run(cmd)
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def delete_pages(src, dst, page_numbers):
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page_count = get_pagecount(src)
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cat_ranges = cat_ranges_for_delete(
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page_count,
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page_numbers
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)
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cmd = [
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settings.BINARY_PDFTK,
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src,
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"cat"
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]
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for page in cat_ranges:
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cmd.append(
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str(page)
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)
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cmd.append("output")
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cmd.append(dst)
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run(cmd)
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@ -4,7 +4,7 @@ import shutil
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from os import listdir
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from os.path import isdir, join
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from mglib import pdftk
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from mglib import stapler
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from mglib.path import DocumentPath, PagePath
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from mglib.step import Steps
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from mglib.utils import get_assigns_after_delete, safe_to_delete
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@ -209,7 +209,7 @@ class Storage:
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self.abspath(dst_doc_path)
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)
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pdftk.reorder_pages(
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stapler.reorder_pages(
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src=self.abspath(src_doc_path),
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dst=self.abspath(dst_doc_path),
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new_order=new_order
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@ -269,7 +269,7 @@ class Storage:
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self.make_sure_path_exists(
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self.abspath(dst_doc_path)
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)
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pdftk.delete_pages(
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stapler.delete_pages(
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self.abspath(src_doc_path),
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self.abspath(dst_doc_path),
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page_numbers
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@ -332,7 +332,7 @@ class Storage:
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self.abspath(next_ver_dp)
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)
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pdftk.paste_pages(
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stapler.paste_pages(
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src=self.abspath(dest_doc_path),
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dst=self.abspath(next_ver_dp),
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data_list=data_list,
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@ -1,145 +0,0 @@
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import os
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import unittest
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from unittest import mock
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from mglib import pdftk
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from mglib.conf import settings
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from mglib.runcmd import run
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BASE_DIR = os.path.dirname(os.path.abspath(__file__))
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DATA_DIR = os.path.join(BASE_DIR, "data")
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class TestPdfLib(unittest.TestCase):
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def test_ranges_for_reorder(self):
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actual = pdftk.cat_ranges_for_reorder(4, [
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{"page_order": 1, "page_num": 4},
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{"page_order": 2, "page_num": 3},
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{"page_order": 3, "page_num": 2},
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{"page_order": 4, "page_num": 1}
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])
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expected = [4,3,2,1]
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assert expected == actual
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self.assertRaises(ValueError, pdftk.cat_ranges_for_reorder, 2, [])
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self.assertRaises(KeyError, pdftk.cat_ranges_for_reorder, 2, [
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{"page_order": 3, "page_num": 4},
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{"page_order": 5, "page_num": 6}
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])
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def test_delete_pages(self):
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input_file = os.path.join(DATA_DIR, "berlin.pdf")
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output_file = os.path.join(DATA_DIR, "berlin2.pdf")
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with mock.patch("mglib.pdftk.run") as run_func:
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pdftk.delete_pages(input_file, output_file, [1])
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run_func.assert_called()
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run_func.assert_called_with(
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[settings.BINARY_PDFTK, input_file, "cat", "2", "output", output_file]
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)
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def test_cat_ranges_for_delete(self):
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page_count = 22
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page_numbers = range(1, 23)
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actual = pdftk.cat_ranges_for_delete(page_count, [21])
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expected = list(page_numbers)
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expected.remove(21)
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assert actual == expected
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actual = pdftk.cat_ranges_for_delete(page_count, [1])
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expected = list(page_numbers)
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expected.remove(1)
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assert actual == expected
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actual = pdftk.cat_ranges_for_delete(page_count, [1, 7, 10])
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expected = list(page_numbers)
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expected.remove(1)
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expected.remove(7)
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expected.remove(10)
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assert actual == expected
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self.assertRaises(ValueError, pdftk.cat_ranges_for_delete, page_count, ["1"])
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def test_split_ranges(self):
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page_count = 9
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page_numbers = list(range(1, 10))
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self.assertRaises(ValueError, pdftk.split_ranges, 9, after="a", before=False)
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self.assertRaises(ValueError, pdftk.split_ranges, 9, after=False, before=True)
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actual1, actual2 = pdftk.split_ranges(page_count, 1, False)
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expected1 = [1]
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expected2 = [2, 3, 4, 5, 6, 7, 8, 9]
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assert actual1 == expected1
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assert actual2 == expected2
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actual1, actual2 = pdftk.split_ranges(page_count, False, 2)
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expected1 = [1]
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expected2 = [2, 3, 4, 5, 6, 7, 8, 9]
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assert actual1 == expected1
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assert actual2 == expected2
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actual1, actual2 = pdftk.split_ranges(page_count)
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expected1 = list(range(1, page_count + 1))
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expected2 = []
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assert actual1 == expected1
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assert actual2 == expected2
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def test_reorder_pages(self):
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input_file = os.path.join(DATA_DIR, "berlin.pdf")
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output_file = os.path.join(DATA_DIR, "berlin2.pdf")
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new_order = [
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{'page_num': 2, 'page_order': 1},
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{'page_num': 1, 'page_order': 2},
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]
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with mock.patch("mglib.pdftk.run") as run_func:
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pdftk.reorder_pages(input_file, output_file, new_order)
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run_func.assert_called()
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run_func.assert_called_with(
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[settings.BINARY_PDFTK, input_file, "cat", "2", "1", "output", output_file]
|
||||
)
|
||||
|
||||
def test_paste_pages_into_existing_doc(self):
|
||||
input_file = os.path.join(DATA_DIR, "berlin.pdf")
|
||||
output_file = os.path.join(DATA_DIR, "berlin2.pdf")
|
||||
datalist = []
|
||||
|
||||
with mock.patch("mglib.pdftk.run") as run_func:
|
||||
pdftk.paste_pages_into_existing_doc(input_file, output_file, datalist)
|
||||
run_func.assert_called()
|
||||
run_func.assert_called_with(
|
||||
[settings.BINARY_PDFTK, "A=" + input_file, "cat", "A1", "A2", "output", output_file]
|
||||
)
|
||||
|
||||
datalist = [{"src": input_file, "page_nums": "34"}]
|
||||
|
||||
with mock.patch("mglib.pdftk.run") as run_func:
|
||||
pdftk.paste_pages_into_existing_doc(input_file, output_file, datalist, 1)
|
||||
run_func.assert_called()
|
||||
run_func.assert_called_with(
|
||||
[settings.BINARY_PDFTK, "A=" + input_file, "B=" + input_file, "cat", "A1", "B3",
|
||||
"B4", "A2", "output", output_file]
|
||||
)
|
||||
def test_paste_pages(self):
|
||||
input_file = os.path.join(DATA_DIR, "berlin.pdf")
|
||||
output_file = os.path.join(DATA_DIR, "berlin2.pdf")
|
||||
datalist = []
|
||||
|
||||
with mock.patch("mglib.pdftk.run") as run_func:
|
||||
pdftk.paste_pages(input_file, output_file, datalist, False)
|
||||
run_func.assert_called()
|
||||
run_func.assert_called_with(
|
||||
[settings.BINARY_PDFTK, "A=" + input_file, "cat", "A1", "A2", "output", output_file]
|
||||
)
|
||||
|
||||
datalist = [{"src": input_file, "page_nums": "34"}]
|
||||
|
||||
with mock.patch("mglib.pdftk.run") as run_func:
|
||||
pdftk.paste_pages(input_file, output_file, datalist)
|
||||
run_func.assert_called()
|
||||
run_func.assert_called_with(
|
||||
[settings.BINARY_PDFTK, "A=" + input_file, "cat", "A3", "A4",
|
||||
"output", output_file]
|
||||
)
|
||||
|
|
@ -3,7 +3,6 @@ import unittest
|
|||
from unittest import mock
|
||||
from mglib import stapler
|
||||
from mglib.conf import settings
|
||||
from mglib.runcmd import run
|
||||
|
||||
BASE_DIR = os.path.dirname(os.path.abspath(__file__))
|
||||
|
||||
|
|
@ -17,15 +16,15 @@ class TestPdfLib(unittest.TestCase):
|
|||
{"page_order": 2, "page_num": 3},
|
||||
{"page_order": 3, "page_num": 2},
|
||||
{"page_order": 4, "page_num": 1}
|
||||
])
|
||||
expected = [4,3,2,1]
|
||||
])
|
||||
expected = [4, 3, 2, 1]
|
||||
assert expected == actual
|
||||
|
||||
self.assertRaises(ValueError, stapler.cat_ranges_for_reorder, 2, [])
|
||||
self.assertRaises(KeyError, stapler.cat_ranges_for_reorder, 2, [
|
||||
{"page_order": 3, "page_num": 4},
|
||||
{"page_order": 5, "page_num": 6}
|
||||
])
|
||||
])
|
||||
|
||||
def test_delete_pages(self):
|
||||
input_file = os.path.join(DATA_DIR, "berlin.pdf")
|
||||
|
|
@ -38,13 +37,22 @@ class TestPdfLib(unittest.TestCase):
|
|||
[settings.BINARY_STAPLER, "del", input_file, "1", output_file]
|
||||
)
|
||||
|
||||
|
||||
def test_split_ranges(self):
|
||||
page_count = 9
|
||||
page_numbers = list(range(1, 10))
|
||||
|
||||
self.assertRaises(ValueError, stapler.split_ranges, 9, after="a", before=False)
|
||||
self.assertRaises(ValueError, stapler.split_ranges, 9, after=False, before=True)
|
||||
self.assertRaises(
|
||||
ValueError,
|
||||
stapler.split_ranges,
|
||||
9,
|
||||
after="a",
|
||||
before=False
|
||||
)
|
||||
self.assertRaises(
|
||||
ValueError,
|
||||
stapler.split_ranges,
|
||||
9, after=False,
|
||||
before=True
|
||||
)
|
||||
|
||||
actual1, actual2 = stapler.split_ranges(page_count, 1, False)
|
||||
expected1 = [1]
|
||||
|
|
@ -67,54 +75,81 @@ class TestPdfLib(unittest.TestCase):
|
|||
def test_reorder_pages(self):
|
||||
input_file = os.path.join(DATA_DIR, "berlin.pdf")
|
||||
output_file = os.path.join(DATA_DIR, "berlin2.pdf")
|
||||
new_order = [
|
||||
{'page_num': 2, 'page_order': 1},
|
||||
{'page_num': 1, 'page_order': 2},
|
||||
]
|
||||
new_order = [
|
||||
{'page_num': 2, 'page_order': 1},
|
||||
{'page_num': 1, 'page_order': 2},
|
||||
]
|
||||
|
||||
with mock.patch("mglib.stapler.run") as run_func:
|
||||
stapler.reorder_pages(input_file, output_file, new_order)
|
||||
run_func.assert_called()
|
||||
run_func.assert_called_with(
|
||||
[settings.BINARY_STAPLER, "sel", input_file, "2", "1", output_file]
|
||||
[
|
||||
settings.BINARY_STAPLER,
|
||||
"sel",
|
||||
input_file,
|
||||
"2",
|
||||
"1",
|
||||
output_file
|
||||
]
|
||||
)
|
||||
|
||||
def test_paste_pages_into_existing_doc(self):
|
||||
input_file = os.path.join(DATA_DIR, "berlin.pdf")
|
||||
output_file = os.path.join(DATA_DIR, "berlin2.pdf")
|
||||
datalist = []
|
||||
datalist = []
|
||||
|
||||
with mock.patch("mglib.stapler.run") as run_func:
|
||||
stapler.paste_pages_into_existing_doc(input_file, output_file, datalist)
|
||||
stapler.paste_pages_into_existing_doc(
|
||||
input_file, output_file, datalist
|
||||
)
|
||||
run_func.assert_called()
|
||||
run_func.assert_called_with(
|
||||
[settings.BINARY_STAPLER, "sel", "A=" + input_file, "A1", "A2", output_file]
|
||||
[
|
||||
settings.BINARY_STAPLER,
|
||||
"sel", "A=" + input_file, "A1", "A2", output_file
|
||||
]
|
||||
)
|
||||
|
||||
datalist = [{"src": input_file, "page_nums": "34"}]
|
||||
datalist = [{"src": input_file, "page_nums": "34"}]
|
||||
|
||||
with mock.patch("mglib.stapler.run") as run_func:
|
||||
stapler.paste_pages_into_existing_doc(input_file, output_file, datalist, 1)
|
||||
stapler.paste_pages_into_existing_doc(
|
||||
input_file,
|
||||
output_file,
|
||||
datalist,
|
||||
1
|
||||
)
|
||||
run_func.assert_called()
|
||||
run_func.assert_called_with(
|
||||
[settings.BINARY_STAPLER, "sel", "A=" + input_file, "B=" + input_file, "A1", "B3",
|
||||
"B4", "A2", output_file]
|
||||
[
|
||||
settings.BINARY_STAPLER,
|
||||
"sel", "A=" + input_file,
|
||||
"B=" + input_file, "A1", "B3",
|
||||
"B4", "A2", output_file
|
||||
]
|
||||
)
|
||||
|
||||
|
||||
def test_paste_pages(self):
|
||||
input_file = os.path.join(DATA_DIR, "berlin.pdf")
|
||||
output_file = os.path.join(DATA_DIR, "berlin2.pdf")
|
||||
datalist = []
|
||||
datalist = []
|
||||
|
||||
with mock.patch("mglib.stapler.run") as run_func:
|
||||
stapler.paste_pages(input_file, output_file, datalist, False)
|
||||
run_func.assert_called()
|
||||
run_func.assert_called_with(
|
||||
[settings.BINARY_STAPLER, "sel", "A=" + input_file, "A1", "A2", output_file]
|
||||
[
|
||||
settings.BINARY_STAPLER,
|
||||
"sel",
|
||||
"A=" + input_file,
|
||||
"A1",
|
||||
"A2",
|
||||
output_file
|
||||
]
|
||||
)
|
||||
|
||||
datalist = [{"src": input_file, "page_nums": "34"}]
|
||||
datalist = [{"src": input_file, "page_nums": "34"}]
|
||||
|
||||
with mock.patch("mglib.stapler.run") as run_func:
|
||||
stapler.paste_pages(input_file, output_file, datalist)
|
||||
|
|
|
|||
Loading…
Reference in New Issue