conv.py

#!/usr/bin/python3
import sys
import os
import re
import io
import requests
import json
import io
import html

# Assume infile is the "build number"
builder = sys.argv[1]
number = sys.argv[2]
out = sys.argv[3]

json_raw = requests.get(f"https://build.voidlinux.org/json/builders/{builder}_builder/builds/{number}", stream=True)
json_raw.raw.decode_content = True
json = json.load(io.BytesIO(json_raw.content))

logfile_url = json["logs"][7][1] + "/text"
logfile_raw = requests.get(logfile_url, stream=True)
logfile_raw.raw.decode_content = True
fin = io.StringIO(html.unescape(logfile_raw.content.decode()))

l = fin.readline()
while l:
    pkg = l.replace("[xbps-src]       ", "").strip()
    # Read until next [xbps-src], writing in meantime
    try:
        os.makedirs(out)
    except FileExistsError:
        pass
    # We do not know the exact output path yet
    # Write into a buffer until we do
    buf = ""
    l = fin.readline()
    while not ": building [" in l:
        buf += l
        l = fin.readline()
    # Find remaning information
    ver = re.sub(r'=> .*-', '', re.sub(r':.*', '', l)).strip()
    arch = re.sub(r'.* ', '', l.replace("...", "").strip())
    dirs = os.path.join(out, pkg, ver)
    try:
        os.makedirs(dirs)
    except FileExistsError:
        pass
    with open(os.path.join(dirs, arch), 'w') as fout:
        # Write in the buffer first
        fout.write(buf)
        while l and not l.startswith("[xbps-src]"):
            fout.write(l)
            l = fin.readline()