The simple script helps me clean up unused pictures when writing LATEX

clean_pics.py

# read .tex file and extract all filenames that have .png, .jpg, .jpeg, and .eps
# delete all other files in ./figures/*
import re
import os
import glob


SUFFIX = 'png|jpg|jpeg|eps|JPEG|JPG'

def extract_filenames(fname):
    express = re.compile('/figures/(.*.(%s))' % SUFFIX, re.IGNORECASE)
    results = []
    with open(fname) as f:
        lines = f.readlines()
        line = lines[0]
        for line in lines:
            match = express.findall(line)
            if len(match) > 0:
                r = match[0][0].replace('{', '')
                r = r.replace('}', '')
                r = 'figures/'+r
                results.append(r)
    return results

def delete(results):
    all_files = glob.glob('figures/*')
    for file in all_files:
        if file not in results:
            os.remove(file)

   
results = extract_filenames('thesis_paper_2017.tex')
delete(results)