jw-pkg/src/python/jw/pkg/cmds/projects/lib/templates.py

import textwrap

def format_lines(
    template: str, values: dict[str, str], li_quote: bool, li_delimiter: str
) -> str:

    def __format_value(val):
        if not li_quote:
            return str(val)
        return f'"{val}"'

    for key, value in values.items():
        if isinstance(value, (list, tuple)):
            values[key] = li_delimiter.join(map(__format_value, value))

    ret = []
    parts = template.splitlines(keepends = True)

    for line in parts:
        for key, value in values.items():
            marker = '{' + key + '}'
            if marker in line:
                indent = line[:line.index(marker)]
                value = str(value).replace('\n', '\n' + indent)
                line = line.replace(marker, value)
        ret.append(line)

    return ''.join(ret)

_templates = {
    'pkg-config':
    """\
        prefix = {prefix}
        exec_prefix = {{prefix}}
        includedir = {{prefix}}/include
        libdir = {{exec_prefix}}/lib

        Name: {name}
        Description: {description}
        Version: {version}
        """,
    'pyrightconfig.json':
    """\
        {
          "extends": {base},
          "include": [
            {include}
          ],
          "exclude": [
            "**/__pycache__",
            "**/.pytest_cache",
            "**/.mypy_cache",
            "**/.ruff_cache",
            "**/.venv",
            "**/build",
            "**/dist"
          ],
          "extraPaths": [
            {extra_paths}
          ],
          "typeCheckingMode": "basic",
          "pythonPlatform": "Linux"
        }
        """,
}

def tmpl_render(
    template_name: str,
    values,
    li_quote = False,
    li_delimiter = '\n',
    search_path: list[str] = []
) -> str:

    def __format(template: str) -> str:
        return format_lines(
            template,
            values,
            li_quote = li_quote,
            li_delimiter = li_delimiter,
        )

    for d in search_path:
        path = d + '/' + template_name
        try:
            with open(path, 'r') as f:
                template = f.read()
                return __format(template)
        except FileNotFoundError:
            pass

    raw = _templates.get(template_name, None)
    if raw is None:
        raise Exception(f'Failed to find template "{template_name}"')
    return __format(textwrap.dedent(raw))