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pebble-blog rss-format to ghost-cms-json-format converter
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# pebble-rss to ghost-json converter | |
# 2020 by thomas trocha | |
# license: public domain | |
# use at own risk, make sure you have the right to download files. if not, don't do it | |
# | |
# usage: place blog-rss.xml in this script's folder | |
# modify vars below: | |
# input_name = name of the pebble-rss.xml-filename | |
# output_name= converted ghost-cms.json-filename | |
# download_images= try to download images | |
# image_folder=relative folder where to put images | |
# | |
# more info: https://thomas.trocha.com/blog/migrating-blog-pebble-ghost-cms/ | |
import xml.etree.ElementTree as ET | |
from datetime import datetime | |
import time | |
import json | |
import re | |
from pathlib import Path | |
import requests,os | |
input_name = 'pebble_blog_rss_orig.xml' | |
output_name = 'blog.json' | |
download_images = True | |
image_folder = 'images' | |
if download_images: | |
Path(image_folder).mkdir(parents=True, exist_ok=True) | |
now = datetime.now() | |
namespaces = {'dc':'http://purl.org/dc/elements/1.1/','content':'http://purl.org/rss/1.0/modules/content/'} | |
def create_epoch_time(rss_date): | |
# rss-dates: 2020-08-02T17:08:00Z | |
date_time = '29.08.2011 11:05:02' | |
pattern = '%Y-%m-%dT%H:%M:%SZ' | |
parse_time = time.strptime(rss_date, pattern) | |
epoch = int(time.mktime(parse_time))*1000 | |
return epoch | |
downloaded_images = {} | |
image_counter = 0 | |
def image_downloader(text): | |
global downloaded_images,image_counter | |
match = re.findall("\\<img src=\"(.*?)\"",text,re.DOTALL) | |
if match: | |
for image in match: | |
if image not in downloaded_images: | |
image_counter += 1 | |
output_extension = None | |
if ".jpg" in image: | |
output_extension = ".jpg" | |
elif ".png" in image: | |
output_extension = ".png" | |
elif ".gif" in image: | |
output_extension = ".gif" | |
else: | |
print ("Unknown image type: %s! ignoring" % image) | |
continue | |
output_file = "%s/image_%s%s" % ( image_folder,image_counter,output_extension ) | |
if os.path.exists(output_file): | |
# file is already downloaded | |
downloaded_images[image]=output_file | |
print("FOUND IN FS IMAGE:%s => %s" % (image,output_file)) | |
else: | |
# download file | |
print("DOWNLOAD IMAGE:%s => %s" % (image,output_file)) | |
try: | |
r = requests.get(image,allow_redirects=True) | |
open(output_file,'wb').write(r.content) | |
downloaded_images[image]=output_file | |
except: | |
print("Could not load image %s" % image) | |
continue | |
text = text.replace(image,"/content/images/%s" % downloaded_images[image]) | |
return text | |
tree = ET.parse(input_name) | |
root = tree.getroot() | |
result = None | |
posts = None | |
tags = None | |
tag_map = None | |
posts_tags = None | |
users = None | |
item_id = 0 | |
tag_ids = 0 | |
def add_tag(tag,post_id): | |
global tags,tag_map,tag_ids | |
tag_id = 0 | |
if tag in tag_map: | |
tag_id = tag_map[tag] | |
else: | |
tag_ids += 1 | |
tag_id = tag_ids | |
tag_map[tag]=tag_id | |
tags.append({ | |
"id" : tag_id, | |
"name" : tag, | |
"slug" : tag.replace(" ","-"), | |
"description" : "" | |
}) | |
posts_tags.append({ | |
"tag_id" : tag_id, | |
"post_id" : post_id | |
}) | |
def parse_rss(root): | |
for child in root: | |
print("%s : %s" % (child.tag,child.attrib)) | |
rss_channel(child) | |
def rss_channel(channel): | |
global item_id,posts,tags,posts_tags,users,tag_map | |
blog_date = channel.find("dc:date",namespaces).text | |
blog_date_epoch = create_epoch_time(blog_date) | |
result = { | |
"meta" : { | |
"exported_on" : blog_date_epoch, | |
"version" : "3.27.0" | |
} | |
} | |
item_id = 1 | |
posts = [] | |
tags = [] | |
tag_map={} | |
posts_tags = [] | |
users = [ | |
{ | |
"id": 1, | |
"name": "dertom95", | |
"slug": "dertom", | |
"email": "thomas.trocha@gmail.com", | |
"profile_image": None, | |
"cover_image": None, | |
"bio": None, | |
"website": None, | |
"location": None, | |
"accessibility": None, | |
"meta_title": None, | |
"meta_description": None, | |
"created_at": 1283780649000, | |
"created_by": 1, | |
"updated_at": 1286958624000, | |
"updated_by": 1 | |
} | |
] | |
result["data"] = { | |
"posts" : posts, | |
"tags" : tags, | |
"posts_tags" : posts_tags, | |
"users" : users | |
} | |
for item in channel.findall("item"): | |
rss_item(item) | |
text_file = open("blog.json","w") | |
text_file.write(json.dumps(result, sort_keys=True, indent=4)) | |
text_file.close() | |
def rss_item(item): | |
global item_id,posts,tags,posts_tags,users,download_images | |
content = item.find("content:encoded",namespaces).text | |
if download_images: | |
# download images <img src=".."> and replace the images | |
content = image_downloader(content) | |
mobiledoc = { | |
"version": "0.3.1", | |
"markups": [], | |
"atoms": [], | |
"cards": [['html', {"cardName": 'html', "html": '%s' % content}]], | |
"sections": [[10,0]] | |
} | |
post = { | |
"id" : item_id, | |
"title" : item.find("title").text, | |
"slug" : item.find("title").text.replace(" ","-"), | |
"status" : "published", | |
"published_by": 1, | |
"author_id" : 1, | |
"published_at": create_epoch_time(item.find("dc:date",namespaces).text), | |
"created_at": create_epoch_time(item.find("dc:date",namespaces).text), | |
"created_by": 1, | |
"mobiledoc" : json.dumps(mobiledoc) | |
} | |
posts.append(post) | |
categories = item.findall("category"); | |
if categories: | |
for cat in categories: | |
tag = cat.text | |
if tag: | |
print("TAG:%s item_id:%s" % (tag,item_id)) | |
add_tag(tag,item_id) | |
item_id += 1 | |
parse_rss(root) |
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