Random Projects Book Site

2017-09-14 04:08:30 +0000 - Written by Carl Burks

I've been collecting Humble Book bundles for a while and they have been lumping up in a directory and I needed a good way to organize them.

First I discovered that some of them had data in the PDF's exif tags. So I used the exiftool command. That pulled things in pretty well, so I needed to grab the first page for a thumbnail. Imagemagick's convert did just that.

Here is the script:

import os
import subprocess
import json
import uuid
import argparse

class FileProcessor(object):
    """ Operates on a group of Files """

    def __init__(self, thumbnail_path, data_path):
        self._thumbnail_path = thumbnail_path
        self._allowed_extensions = [".PDF",".pdf"]
        self._data_path = data_path
        self._file_actions = [self.process_file_info_from_path, self.save_image_thumbnail_from_path]
            with open(data_path, 'r') as myfile:
            self._info = {}

    def file_processed(self, path):
        return path in self._info.keys()

    def get_exif_info(self, path):
        return subprocess.check_output(f"exiftool -Title -Author -j {path}", shell=True).decode()

    def get_new_outpath(self):
        guid = uuid.uuid4()
        thumbnail = self._thumbnail_path
        return f"{thumbnail}{guid}.png"

    def process_file_info_from_path(self, path):
        self.save_file_info(path, json.loads(self.get_exif_info(path))[0])

    def save_image_thumbnail_from_path(self, path):
        outpath = self.get_new_outpath()
        subprocess.check_output(f"convert -trim {path}[0]  {outpath}[0]", shell=True)
        self.save_file_info(path, {"thumbnail": outpath})

    def save_file_info(self, path, info):
        if path in self._info.keys():
            for key in info.keys():
                self._info[path][key] = info[key]
            self._info[path] = info

    def process_file(self, path):
        if os.path.isfile(path) and not self.file_processed(path):
            _, file_ext = os.path.splitext(path)
            if file_ext in self._allowed_extensions:
                for action in self._file_actions:

    def process_files(self, path):
        for file_name in os.listdir(path):
            self.process_file(os.path.join(path, file_name))
        with open(self._data_path, "w") as outfile:
            json.dump(self._info, outfile, indent=4)

parser = argparse.ArgumentParser()
parser.add_argument("-n","--thumbnail_path", type=str, help="Thumbnail path")
parser.add_argument("-d","--data_path", type=str, help="Data path")
parser.add_argument("-t","--file_path", type=str, help="file path")
args = parser.parse_args()
fp = FileProcessor(args.thumbnail_path, args.data_path)

This made a nice .json file.

Next I built a little site with bootstrap, lodash, and knockout.

I want to rebuild the site with:

Angular 2



Then compare the differences and how easy it was to code.

I've added the Knockout version.

The Knockout version was fairly easy to code so that's a good baseline.