jsp-trans.py

jsp-trans.py

from pathlib import Path
from collections import defaultdict
import re
from bs4 import BeautifulSoup

pattern = re.compile('<jsp:include page="/includes/bootstrap\.jsp" flush="false"\s*>(.*?)</jsp:include>', flags=re.MULTILINE|re.DOTALL)

allFlags = set()

for path in Path('opennms-webapp/src').rglob('*.jsp'):
    with path.open('r') as f:
        content = f.read()

    def repl(match):
        result = f'<%@ page import="org.opennms.web.utils.Bootstrap" %>\n'

        xml = BeautifulSoup(match.group(0), 'html.parser')

        params = defaultdict(list)
        for param in xml.find_all('jsp:param'):
            params[param['name']].append(param['value'])

        params.pop('title', None)
        params.pop('location', None)
        params.pop('meta', None)
        params.pop('vaadinEmbeddedStyles', None)
        params.pop('norequirejs', None)
        params.pop('storageAdmin', None)

        scrollSpy = params.pop('scrollSpy', [None])[0]
        ngApp = params.pop('ngapp', [None])[0]
        headTitles = params.pop('headTitle', [])
        breadcrumbs = params.pop('breadcrumb', [])

        allFlags.update(params.keys())

        flags = set()
        for (k, v) in params.items():
            if v == ['true']:
                flags.add(k)
            else:
                print('Not a flag: ', k, v)

        flags = map(lambda s: f'"{s}"', flags)
        flags = ', '.join(flags)

        def val(value):
            if value.startswith('<%=') and value.endswith('%>'):
                value = value.removeprefix('<%=')
                value = value.removesuffix('%>')
                value = value.strip()
                return value

            if value.startswith('<a') and value.endswith('a>'):
                a = BeautifulSoup(value, 'html.parser').find('a')
                title = a.text
                link = a['href']
                return f'"{title}", "{link}"'

            value = f'"{value}"'

#            value = re.sub(r'\$\{(.+?)\}', r'" + \1 + "', value)
#            value = value.removeprefix('"" + ')
#            value = value.removesuffix(' + ""')

            return value

        result += f'<% Bootstrap.with(pageContext)\n'
        for headTitle in headTitles:
            result += f'          .headTitle({val(headTitle)})\n'
        for breadcrumb in breadcrumbs:
            result += f'          .breadcrumb({val(breadcrumb)})\n'
        if scrollSpy is not None:
            result += f'          .scrollSpy({val(scrollSpy)})\n'
        if ngApp is not None:
            result += f'          .ngApp({val(ngApp)})\n'
        if flags:
            result += f'          .flags({flags})\n'
        result += f'          .build(request);\n'
        result += f'%>\n'
        result += f'<jsp:directive.include file="/includes/bootstrap.jsp" />'

        return result

    content = pattern.sub(repl, content)

    with path.with_suffix('.jsp').open('w') as f:
        f.write(content)

print(allFlags)