algorithm-in-python/utils/codecogs.py

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2019-03-18 00:46:56 +08:00
import os
import re
import sys
from translate import Translator as TR
FORMULA = re.compile(r'\${1,2}(?P<formula>.+?)\${1,2}',re.DOTALL)
Chinese = re.compile(u"(?P<chinese>[\u4e00-\u9fa5]+)")
API = 'https://latex.codecogs.com/gif.latex?'
def codecog(f):
if os.path.exists(f) and f.endswith('.md'):
with open(f) as fp:
txt = fp.read()
with open(f,'w') as fp:
fp.write(re.sub(FORMULA,covert,txt))
else:
s = re.sub(FORMULA,covert,f)
print(s)
def covert(matched):
s = matched.group('formula').strip('$ ')
s = re.sub(Chinese,zh2en,s)
s = re.sub(r'\r+|\n+|\\n',' ',s)
s = re.sub(' +','&space;',s)
return '![]({})'.format(API+s)
def zh2en(txt):
s = txt.group('chinese').strip()
tran = TR(to_lang='en',from_lang='zh')
en = tran.translate(s)
return re.sub(' +','-',en)
def handle(path):
if os.path.isdir(path):
for p,ds,fs in os.walk(path):
for f in fs:
if f.endswith('.md'):
codecog(os.path.join(p,f))
else:
codecog(path)
if __name__ == '__main__':
args = sys.argv[1:]
if not args:
s = input('Input a file: ')
args.append(s)
for f in args:
handle(f)