148 lines
4.7 KiB
Python
148 lines
4.7 KiB
Python
# Melpomene webcomic reader JSON/JS/HTML generator
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# Version 1.0.0_RC1
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# CC-BY-NC-SA https://git.aribaud.net/caribaud/melpomene/
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import sys
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import re
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import xml.etree.ElementTree as ET
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import argparse
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from pathlib import Path
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HTML_TEMPLATE = Path(__file__).parent / "melpomene.html"
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HTML_TO_REPLACE = "<!-- your img tags here, see documentation -->"
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def extract_zooms(src_folder):
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folder = Path(src_folder)
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zooms = {}
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max_width = 0
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max_height = 0
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idx = 0
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for svg_path in folder.glob("*.svg"):
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idx += 1
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print(f"page {idx} : {svg_path.name}")
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zooms[idx] = {
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"name": svg_path.stem,
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"width": 0,
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"height": 0,
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"zooms": [],
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}
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tree = ET.parse(svg_path)
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root = tree.getroot()
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if "." in root.get("width"):
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print(f"WARNING: file {svg_path} has a floating width, it will be rounded", file=sys.stderr)
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zooms[idx]["width"] = round(float(root.get("width")))
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if "." in root.get("height"):
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print(f"WARNING: file {svg_path} has a floating height, it will be rounded", file=sys.stderr)
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zooms[idx]["height"] = round(float(root.get("height")))
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for area in root.findall('.//{*}rect'):
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zooms[idx]["zooms"].append([
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float(area.get("width")),
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float(area.get("height")),
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float(area.get("x")),
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float(area.get("y")),
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])
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return zooms, max_width, max_height
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def write_json_or_js(zooms, dest_file, is_js):
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with open(dest_file, "w") as data_file:
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if is_js:
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data_file.write("PAGES_ZOOMS = ")
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data_file.write("[\n")
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first_coma_skiped = False
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for page_idx in sorted(zooms.keys()):
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for zoom in zooms[page_idx]["zooms"]:
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if zoom[2] < 0 or zoom[3] < 0 :
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print(f"WARNING: negative pos x / pos y in page {page_idx} for zoom {zoom} (is the rectangle flipped?)")
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if first_coma_skiped:
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data_file.write(",\n")
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else:
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first_coma_skiped = True
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data_file.write(f" {[page_idx] + zoom}")
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data_file.write("\n]\n")
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def write_html(zooms, dest_file, pages_width, pages_height, prefix, extention):
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img_tags = ""
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for page_idx in sorted(zooms.keys()):
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img_url = f"{prefix}{zooms[page_idx]['name']}.{extention}"
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zoom_html_data = [','.join([str(zoom) for zoom in page_zooms]) for page_zooms in zooms[page_idx]["zooms"]]
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zoom_html_str = ';'.join(zoom_html_data)
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img_tags = img_tags + f' <img loading="lazy" height="{zooms[page_idx]["height"]}" width="{zooms[page_idx]["width"]}" src="{img_url}" data-zooms="{zoom_html_str}"/>\n'
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img_tags = img_tags.strip()
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with open(HTML_TEMPLATE) as template_file, open(dest_file, "w") as data_file:
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data = template_file.read().replace(HTML_TO_REPLACE, img_tags)
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data_file.write(data)
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def generate_argparse():
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""" Generate Melpomene's generator input parser"""
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parser = argparse.ArgumentParser(
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description="Helper that can generate JSON / JS / HTML files for Melpomene webcomic reader"
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)
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parser.add_argument("output_format", choices=["html", "json", "js"], help="The type of output to generate")
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parser.add_argument("svg_folders", help="Path of the folder containing the SVGs")
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parser.add_argument("-o", metavar="dest_file", help="Where to write the generator output to")
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parser.add_argument("-p", default="", metavar="img_url_prefix", help="What to prefix the URL of the images when using HTML format.")
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parser.add_argument("-e", default="png", metavar="img_ext", help="What extention to use in the URL of the images when using HTML format.")
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return parser
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if __name__ == "__main__":
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args = generate_argparse().parse_args()
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# Get the final outout name
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output = None
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if not args.o:
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output = "melpomene_data"
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else:
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output = args.o
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if args.output_format == "html" and not output.endswith(".html"):
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output += ".html"
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elif args.output_format == "json" and not output.endswith(".json"):
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output += ".json"
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elif args.output_format == "js" and not output.endswith(".js"):
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output += ".js"
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zooms, max_width, max_height = extract_zooms(args.svg_folders)
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if args.output_format == "html":
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write_html(zooms, output, max_width, max_height, args.p, args.e)
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elif args.output_format == "json":
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write_json_or_js(zooms, output, False)
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elif args.output_format == "js":
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write_json_or_js(zooms, output, True)
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