Watch export

nbdev/_modidx.py

@@ -26,7 +26,8 @@
                            'nbdev.cli.nb_export_cli': ('api/cli.html#nb_export_cli', 'nbdev/cli.py'),
                            'nbdev.cli.nbdev_filter': ('api/cli.html#nbdev_filter', 'nbdev/cli.py'),
                            'nbdev.cli.nbdev_new': ('api/cli.html#nbdev_new', 'nbdev/cli.py'),
-                           'nbdev.cli.nbdev_update_license': ('api/cli.html#nbdev_update_license', 'nbdev/cli.py')},
+                           'nbdev.cli.nbdev_update_license': ('api/cli.html#nbdev_update_license', 'nbdev/cli.py'),
+                           'nbdev.cli.watch_export': ('api/cli.html#watch_export', 'nbdev/cli.py')},
             'nbdev.config': { 'nbdev.config._apply_defaults': ('api/config.html#_apply_defaults', 'nbdev/config.py'),
                               'nbdev.config._basic_export_nb': ('api/config.html#_basic_export_nb', 'nbdev/config.py'),
                               'nbdev.config._cfg2txt': ('api/config.html#_cfg2txt', 'nbdev/config.py'),

nbdev/cli.py

@@ -5,17 +5,19 @@
 # %% ../nbs/api/13_cli.ipynb 2
 from __future__ import annotations
 import warnings
+import time
 
 from .config import *
 from .process import *
 from .processors import *
 from .doclinks import *
 from .test import *
 from .clean import *
-from .quarto import nbdev_readme, refresh_quarto_yml
+from .quarto import nbdev_readme, refresh_quarto_yml, fs_watchdog
 from .export import nb_export
 from .frontmatter import FrontmatterProc
 
+from fastcore.xtras import run
 from execnb.nbio import *
 from fastcore.meta import *
 from fastcore.utils import *
@@ -28,7 +30,8 @@
 import os, tarfile, sys
 
 # %% auto 0
-__all__ = ['mapping', 'nbdev_filter', 'extract_tgz', 'nbdev_new', 'nbdev_update_license', 'nb_export_cli', 'chelp']
+__all__ = ['mapping', 'nbdev_filter', 'extract_tgz', 'nbdev_new', 'nbdev_update_license', 'nb_export_cli', 'watch_export',
+           'chelp']
 
 # %% ../nbs/api/13_cli.ipynb
 @call_parse
@@ -168,6 +171,25 @@ def nb_export_cli(nbname,
     "Export a single nbdev notebook to a python script."
     return nb_export(nbname=nbname, debug=debug, **kwargs)
 
+# %% ../nbs/api/13_cli.ipynb
+@call_parse
+def watch_export(nbs:str=None, # Nb directory to watch for changes
+                 lib:str=None, # Export directory to write py files to
+                 force:bool=False # Ignore nbdev config if in nbdev project
+                ):
+    '''Use `nb_export` on ipynb files in `nbs` directory on changes using nbdev config if available'''
+    cfg = get_config() if is_nbdev() else None
+    nbs = nbs or (cfg.nbs_path if cfg else '.')
+    lib = lib or (cfg.lib_path if cfg else '.')
+    if cfg and (nbs != cfg.nbs_path or lib != cfg.lib_path) and not force:
+        raise ValueError("In nbdev project. Use --force to override config.")
+    def _export(e,lib=lib):
+        p = e.src_path
+        if (not '.ipynb_checkpoints' in p and p.endswith('.ipynb') and not Path(p).name.startswith('.~')):
+            run(f'nb_export --lib_path {lib} "{p}"')
+    with fs_watchdog(_export, nbs):
+        while True: time.sleep(1)
+
 # %% ../nbs/api/13_cli.ipynb
 @call_parse
 def chelp():

nbs/api/13_cli.ipynb

@@ -30,17 +30,19 @@
     "#|export\n",
     "from __future__ import annotations\n",
     "import warnings\n",
+    "import time\n",
     "\n",
     "from nbdev.config import *\n",
     "from nbdev.process import *\n",
     "from nbdev.processors import *\n",
     "from nbdev.doclinks import *\n",
     "from nbdev.test import *\n",
     "from nbdev.clean import *\n",
-    "from nbdev.quarto import nbdev_readme, refresh_quarto_yml\n",
+    "from nbdev.quarto import nbdev_readme, refresh_quarto_yml, fs_watchdog\n",
     "from nbdev.export import nb_export\n",
     "from nbdev.frontmatter import FrontmatterProc\n",
     "\n",
+    "from fastcore.xtras import run\n",
     "from execnb.nbio import *\n",
     "from fastcore.meta import *\n",
     "from fastcore.utils import *\n",
@@ -304,6 +306,33 @@
     "    return nb_export(nbname=nbname, debug=debug, **kwargs)"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "aaa472e7",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "#|export\n",
+    "@call_parse\n",
+    "def watch_export(nbs:str=None, # Nb directory to watch for changes\n",
+    "                 lib:str=None, # Export directory to write py files to\n",
+    "                 force:bool=False # Ignore nbdev config if in nbdev project\n",
+    "                ):\n",
+    "    '''Use `nb_export` on ipynb files in `nbs` directory on changes using nbdev config if available'''\n",
+    "    cfg = get_config() if is_nbdev() else None\n",
+    "    nbs = nbs or (cfg.nbs_path if cfg else '.')\n",
+    "    lib = lib or (cfg.lib_path if cfg else '.')\n",
+    "    if cfg and (nbs != cfg.nbs_path or lib != cfg.lib_path) and not force:\n",
+    "        raise ValueError(\"In nbdev project. Use --force to override config.\")\n",
+    "    def _export(e,lib=lib):\n",
+    "        p = e.src_path\n",
+    "        if (not '.ipynb_checkpoints' in p and p.endswith('.ipynb') and not Path(p).name.startswith('.~')):\n",
+    "            run(f'nb_export --lib_path {lib} \"{p}\"')\n",
+    "    with fs_watchdog(_export, nbs):\n",
+    "        while True: time.sleep(1)"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,
@@ -380,7 +409,8 @@
       "\u001b[1m\u001b[94mnbdev_test\u001b[22m\u001b[39m                Test in parallel notebooks matching `path`, passing along `flags`\n",
       "\u001b[1m\u001b[94mnbdev_trust\u001b[22m\u001b[39m               Trust notebooks matching `fname`\n",
       "\u001b[1m\u001b[94mnbdev_update\u001b[22m\u001b[39m              Propagate change in modules matching `fname` to notebooks that created them\n",
-      "\u001b[1m\u001b[94mnbdev_update_license\u001b[22m\u001b[39m      Allows you to update the license of your project.\n"
+      "\u001b[1m\u001b[94mnbdev_update_license\u001b[22m\u001b[39m      Allows you to update the license of your project.\n",
+      "\u001b[1m\u001b[94mwatch_export\u001b[22m\u001b[39m              None\n"
      ]
     }
    ],

settings.ini

@@ -51,6 +51,7 @@ console_scripts = nbdev_create_config=nbdev.config:nbdev_create_config
 	nbdev_proc_nbs=nbdev.quarto:nbdev_proc_nbs
 	nbdev_help=nbdev.cli:chelp
     nb_export=nbdev.cli:nb_export_cli
+    watch_export=nbdev.cli:watch_export
 tst_flags = notest
 nbs_path = nbs
 doc_path = _docs