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main.py
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main.py
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# Develped by ssYanhuo.
import math
import fitz
from tqdm import tqdm
import numpy as np
import os
def is_number(s):
try:
float(s)
return True
except ValueError:
pass
try:
import unicodedata
unicodedata.numeric(s)
return True
except (TypeError, ValueError):
pass
return False
def is_colour_page(page, threshold):
pixel_map = page.get_pixmap()
if pixel_map.n <= 1:
return False
pixel_matrix = np.frombuffer(pixel_map.samples, dtype=np.uint8).reshape(pixel_map.h, pixel_map.w, pixel_map.n)
red_channel = pixel_matrix[:, :, 0]
green_channel = pixel_matrix[:, :, 1]
blue_channel = pixel_matrix[:, :, 2]
return (
(np.abs(red_channel - green_channel) > threshold).any() or
(np.abs(red_channel - blue_channel) > threshold).any() or
(np.abs(green_channel - blue_channel) > threshold).any()
)
def generate_action_list(input_list):
result = []
current = input_list[0]
c = 1
for state_index in range(1, len(input_list)):
if input_list[state_index] == current:
c += 1
else:
result.append({'colour': current, 'count': c})
current = input_list[state_index]
c = 1
result.append({'colour': current, 'count': c})
return result
if __name__ == '__main__':
print('▄▄▄▄▄▄▄ ▄▄▄▄▄▄▄ ▄▄ ▄▄ ▄▄▄▄▄▄ ▄▄ ▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄▄▄▄▄▄ ')
print('█ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ ')
print('█ ▄▄▄▄▄█ ▄▄▄▄▄█ █▄█ █ ▄ █ █▄█ █ █▄█ █ █ █ █ ▄ █ ')
print('█ █▄▄▄▄▄█ █▄▄▄▄▄█ █ █▄█ █ █ █ █▄█ █ █ █ █ ')
print('█▄▄▄▄▄ █▄▄▄▄▄ █▄ ▄█ █ ▄ █ ▄ █ █ █▄█ █ ')
print('▄▄▄▄▄█ █▄▄▄▄▄█ █ █ █ █ ▄ █ █ █ █ █ █ █ █ █ ')
print('█▄▄▄▄▄▄▄█▄▄▄▄▄▄▄█ █▄▄▄█ █▄█ █▄▄█▄█ █▄▄█▄▄█ █▄▄█▄▄▄▄▄▄▄█▄▄▄▄▄▄▄█ ')
print()
print('Developed by ssYanhuo.')
print('Star on GitHub: ' + 'https://github.com/ssYanhuo/pdf-colour-split')
print()
input_file_path = input('要拆分的文件路径（可直接拖入）：')
output_file_path = input('输出文件夹路径（可直接拖入）：')
input_file_path = input_file_path.strip('"').strip('\'')
output_file_path = output_file_path.strip('"').strip('\'')
double_page = input('单面打印 (s) OR 双面打印 (d, 默认)：').lower() != 's'
detect_threshold = input('检测阈值 (10, 默认)：') or '10'
if not is_number(detect_threshold):
detect_threshold = 10
else:
detect_threshold = int(detect_threshold)
print()
print('开始拆分')
print('拆分文件：' + input_file_path)
print('输出文件夹：' + output_file_path)
print('打印方式：' + '双面打印' if double_page else '单面打印')
print('检测阈值：' + str(detect_threshold))
input_pdf = fitz.open(input_file_path)
output_grayscale_pdf = fitz.open()
output_colour_pdf = fitz.open()
count = {'total': input_pdf.page_count,
'print': math.ceil(input_pdf.page_count / 2 if double_page else input_pdf.page_count),
'grayscale': 0,
'colour': 0}
print('总页数：' + str(count['total']))
print('打印张数：' + str(count['print']))
colour_state_list = []
colour_print_state_list = []
print()
for i in tqdm(range(0, count['total'], 2 if double_page else 1)):
unit_pages = [input_pdf[i]]
if double_page and i + 1 < input_pdf.page_count:
unit_pages.append(input_pdf[i + 1])
has_colour_page = False
for page in unit_pages:
if is_colour_page(page, detect_threshold):
colour_state_list.append(True)
has_colour_page = True
else:
colour_state_list.append(False)
for page in unit_pages:
if has_colour_page:
output_colour_pdf.insert_pdf(input_pdf, from_page=page.number, to_page=page.number)
else:
output_grayscale_pdf.insert_pdf(input_pdf, from_page=page.number, to_page=page.number)
if has_colour_page:
colour_print_state_list.append(True)
count['colour'] += 1
else:
colour_print_state_list.append(False)
count['grayscale'] += 1
print()
if output_grayscale_pdf.page_count > 0:
output_grayscale_path = '{}{}{}.pdf'.format(
os.path.join(output_file_path, os.path.splitext(os.path.basename(input_file_path))[0]),
'_grayscale',
'_double' if double_page else '_single')
print('写入文件（黑白）：' + output_grayscale_path)
output_grayscale_pdf.save(output_grayscale_path)
if output_colour_pdf.page_count > 0:
output_colour_path = '{}{}{}.pdf'.format(
os.path.join(output_file_path, os.path.splitext(os.path.basename(input_file_path))[0]),
'_colour',
'_double' if double_page else '_single')
print('写入文件（彩色）：' + output_colour_path)
output_colour_pdf.save(output_colour_path)
print()
print('拆分完成！')
print('\033[0;33m务必检查拆分后的文件，如果拆分错误，请修改检测阈值\033[0m')
grayscale_page_number_list = []
colour_page_number_list = []
for index, state in enumerate(colour_state_list):
if state:
colour_page_number_list.append(str(index + 1))
else:
grayscale_page_number_list.append(str(index + 1))
print('黑白页（共打印 {} 张）页码：\n{}'.format(count['grayscale'], ', '.join(grayscale_page_number_list)))
print('彩色页（共打印 {} 张）页码：\n{}'.format(count['colour'], ', '.join(colour_page_number_list)))
action_list = generate_action_list(colour_print_state_list)
print()
print('按照以下方法把打印好的文稿重新组合成原文稿（可复制保存此段备用）：')
print('将打印好的黑白与彩色文稿分别按页码从小到大，自上而下排序（直接拿起打印好的文稿，正面朝上即可）')
print('组合时拿取指定张数的黑白或彩色文稿，一起翻面扣放在整理好的文稿上面')
print()
for index, action in enumerate(action_list):
print('{}{}. 取 {} 张 {} 文稿，一起翻面扣放在整理好的文稿上面{}'.format(
'\033[0;32m' if action['colour'] else '\033[0;34m',
index + 1,
action['count'],
'彩色' if action['colour'] else '黑白',
'\033[0m'
))
print()
print('整理完成！')
print()
input('按任意键退出……')