tts-kokoro engine underway

src/epub_tts/utils.py

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+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+# Copyright (c) 2025-2026 Renato Xavier da Silveira Rosa
+# See [LICENSE](./LICENSE) or [BSD-3-Clause-Clear](https://spdx.org/licenses/BSD-3-Clause-Clear.html)
+# Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
+"""Utilities for running vendored EPUB->TTS repositories in isolated venvs."""
+
+import subprocess
+import shutil
+import sys
+import venv
+from pathlib import Path
+from typing import Optional
+from . import log, PathLike
+
+def get_vendor_root() -> Path:
+    return Path(__file__).resolve().parents[1] / "vendor"
+
+
+def get_repo_path(repo_name: str) -> Path:
+    repo_path = get_vendor_root() / repo_name
+    if not repo_path.exists():
+        raise FileNotFoundError(
+            f"Vendored repository '{repo_name}' not found under {get_vendor_root()}"
+        )
+    return repo_path
+
+
+def get_venv_path(repo_name: str) -> Path:
+    return get_repo_path(repo_name) / ".venv"
+
+
+def get_venv_python(repo_name: str) -> Path:
+    venv_path = get_venv_path(repo_name)
+    python_executable = (
+        venv_path / "Scripts" / "python.exe"
+        if sys.platform == "win32"
+        else venv_path / "bin" / "python"
+    )
+    if not python_executable.exists():
+        raise FileNotFoundError(
+            f"Python executable not found in virtualenv at {python_executable}"
+        )
+    return python_executable
+
+
+def ensure_venv(repo_name: str) -> Path:
+    repo_path = get_repo_path(repo_name)
+    venv_path = get_venv_path(repo_name)
+    if not venv_path.exists():
+        venv.EnvBuilder(with_pip=True).create(venv_path)
+        python_executable = get_venv_python(repo_name)
+        subprocess.run(
+            [str(python_executable), "-m", "pip", "install", "-e", str(repo_path)],
+            check=True,
+        )
+    return get_venv_python(repo_name)
+
+
+def build_run_command(
+        repo_name: str,
+        # backend_cmd: str = None,
+    ) -> str:
+    return str(ensure_venv(repo_name))
+    # if not backend_cmd:
+    #     return str(ensure_venv(repo_name))
+    # ensure_venv(repo_name)
+    # venv_path = get_venv_path(repo_name)
+    # return (
+    #     str( venv_path / "Scripts" / f"{backend_cmd}.exe")
+    #     if sys.platform == "win32"
+    #     else str(venv_path / "bin" / backend_cmd)
+    #     )
+
+
+
+def check_env(self, which=None):
+    if not which:
+        return None
+    if isinstance(which, str):
+        if " " in which:
+            which = which.split()
+        which = [which]
+    for bin in which:
+        p = shutil.which(bin)
+        if not p:
+            log(f"{bin} is either NOT installed or "
+                    "NOT in your system PATH.")
+            return False
+        else:
+            log(f"{bin} found at: {p}")
+            return True