Develop command working

.gitignore

@@ -159,3 +159,5 @@ cython_debug/
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
 junit.xml
+
+tests/dummy/

jupyter_builder/base_extension_app.py

@@ -0,0 +1,64 @@
+"""Jupyter LabExtension Entry Points."""
+
+# Copyright (c) Jupyter Development Team.
+# Distributed under the terms of the Modified BSD License.
+
+import os
+from copy import copy
+
+from jupyter_core.application import JupyterApp, base_aliases, base_flags
+from jupyter_core.paths import jupyter_path
+from traitlets import List, Unicode, default
+
+from .debug_log_file_mixin import DebugLogFileMixin
+
+HERE = os.path.dirname(os.path.abspath(__file__))
+
+
+# from .federated_labextensions import build_labextension, develop_labextension_py, watch_labextension
+
+flags = dict(base_flags)
+
+develop_flags = copy(flags)
+develop_flags["overwrite"] = (
+    {"DevelopLabExtensionApp": {"overwrite": True}},
+    "Overwrite files",
+)
+
+aliases = dict(base_aliases)
+aliases["debug-log-path"] = "DebugLogFileMixin.debug_log_path"
+
+# VERSION = get_app_version()
+VERSION = 1
+
+
+class BaseExtensionApp(JupyterApp, DebugLogFileMixin):
+    version = VERSION
+    flags = flags
+    aliases = aliases
+    name = "lab"
+
+    labextensions_path = List(
+        Unicode(),
+        help="The standard paths to look in for prebuilt JupyterLab extensions",
+    )
+
+    # @default("labextensions_path")
+    # def _default_labextensions_path(self):
+    # lab = LabApp()
+    # lab.load_config_file()
+    # return lab.extra_labextensions_path + lab.labextensions_path
+    @default("labextensions_path")
+    def _default_labextensions_path(self) -> list[str]:
+        return jupyter_path("labextensions")
+
+    def start(self):
+        with self.debug_logging():
+            self.run_task()
+
+    def run_task(self):
+        pass
+
+    def _log_format_default(self):
+        """A default format for messages"""
+        return "%(message)s"

jupyter_builder/commands.py

@@ -0,0 +1,115 @@
+"""JupyterLab command handler"""
+
+# Copyright (c) Jupyter Development Team.
+# Distributed under the terms of the Modified BSD License.
+
+import itertools
+
+from .jupyterlab_semver import Range, gt, gte, lt, lte
+
+
+def _test_overlap(spec1, spec2, drop_prerelease1=False, drop_prerelease2=False):
+    """Test whether two version specs overlap.
+
+    Returns `None` if we cannot determine compatibility,
+    otherwise whether there is an overlap
+    """
+    cmp = _compare_ranges(
+        spec1, spec2, drop_prerelease1=drop_prerelease1, drop_prerelease2=drop_prerelease2
+    )
+    if cmp is None:
+        return
+    return cmp == 0
+
+
+def _compare_ranges(spec1, spec2, drop_prerelease1=False, drop_prerelease2=False):  # noqa
+    """Test whether two version specs overlap.
+
+    Returns `None` if we cannot determine compatibility,
+    otherwise return 0 if there is an overlap, 1 if
+    spec1 is lower/older than spec2, and -1 if spec1
+    is higher/newer than spec2.
+    """
+    # Test for overlapping semver ranges.
+    r1 = Range(spec1, True)
+    r2 = Range(spec2, True)
+
+    # If either range is empty, we cannot verify.
+    if not r1.range or not r2.range:
+        return
+
+    # Set return_value to a sentinel value
+    return_value = False
+
+    # r1.set may be a list of ranges if the range involved an ||, so we need to test for overlaps between each pair.
+    for r1set, r2set in itertools.product(r1.set, r2.set):
+        x1 = r1set[0].semver
+        x2 = r1set[-1].semver
+        y1 = r2set[0].semver
+        y2 = r2set[-1].semver
+
+        if x1.prerelease and drop_prerelease1:
+            x1 = x1.inc("patch")
+
+        if y1.prerelease and drop_prerelease2:
+            y1 = y1.inc("patch")
+
+        o1 = r1set[0].operator
+        o2 = r2set[0].operator
+
+        # We do not handle (<) specifiers.
+        if o1.startswith("<") or o2.startswith("<"):
+            continue
+
+        # Handle single value specifiers.
+        lx = lte if x1 == x2 else lt
+        ly = lte if y1 == y2 else lt
+        gx = gte if x1 == x2 else gt
+        gy = gte if x1 == x2 else gt
+
+        # Handle unbounded (>) specifiers.
+        def noop(x, y, z):
+            return True
+
+        if x1 == x2 and o1.startswith(">"):
+            lx = noop
+        if y1 == y2 and o2.startswith(">"):
+            ly = noop
+
+        # Check for overlap.
+        if (
+            gte(x1, y1, True)
+            and ly(x1, y2, True)
+            or gy(x2, y1, True)
+            and ly(x2, y2, True)
+            or gte(y1, x1, True)
+            and lx(y1, x2, True)
+            or gx(y2, x1, True)
+            and lx(y2, x2, True)
+        ):
+            # if we ever find an overlap, we can return immediately
+            return 0
+
+        if gte(y1, x2, True):
+            if return_value is False:
+                # We can possibly return 1
+                return_value = 1
+            elif return_value == -1:
+                # conflicting information, so we must return None
+                return_value = None
+            continue
+
+        if gte(x1, y2, True):
+            if return_value is False:
+                return_value = -1
+            elif return_value == 1:
+                # conflicting information, so we must return None
+                return_value = None
+            continue
+
+        msg = "Unexpected case comparing version ranges"
+        raise AssertionError(msg)
+
+    if return_value is False:
+        return_value = None
+    return return_value

jupyter_builder/debug_log_file_mixin.py

@@ -0,0 +1,64 @@
+# Copyright (c) Jupyter Development Team.
+# Distributed under the terms of the Modified BSD License.
+
+import contextlib
+import logging
+import os
+import sys
+import tempfile
+import traceback
+import warnings
+
+from traitlets import Unicode
+from traitlets.config import Configurable
+
+
+class DebugLogFileMixin(Configurable):
+    debug_log_path = Unicode("", config=True, help="Path to use for the debug log file")
+
+    @contextlib.contextmanager
+    def debug_logging(self):
+        log_path = self.debug_log_path
+        if os.path.isdir(log_path):
+            log_path = os.path.join(log_path, "jupyterlab-debug.log")
+        if not log_path:
+            handle, log_path = tempfile.mkstemp(prefix="jupyterlab-debug-", suffix=".log")
+            os.close(handle)
+        log = self.log
+
+        # Transfer current log level to the handlers:
+        for h in log.handlers:
+            h.setLevel(self.log_level)
+        log.setLevel("DEBUG")
+
+        # Create our debug-level file handler:
+        _debug_handler = logging.FileHandler(log_path, "w", "utf8", delay=True)
+        _log_formatter = self._log_formatter_cls(fmt=self.log_format, datefmt=self.log_datefmt)
+        _debug_handler.setFormatter(_log_formatter)
+        _debug_handler.setLevel("DEBUG")
+
+        log.addHandler(_debug_handler)
+
+        try:
+            yield
+        except Exception as ex:
+            _, _, exc_traceback = sys.exc_info()
+            msg = traceback.format_exception(ex.__class__, ex, exc_traceback)
+            for line in msg:
+                self.log.debug(line)
+            if isinstance(ex, SystemExit):
+                warnings.warn(f"An error occurred. See the log file for details: {log_path}")
+                raise
+            warnings.warn("An error occurred.")
+            warnings.warn(msg[-1].strip())
+            warnings.warn(f"See the log file for details: {log_path}")
+            self.exit(1)
+        else:
+            log.removeHandler(_debug_handler)
+            _debug_handler.flush()
+            _debug_handler.close()
+            try:
+                os.remove(log_path)
+            except FileNotFoundError:
+                pass
+        log.removeHandler(_debug_handler)

jupyter_builder/extension_commands/__init__.py

@@ -0,0 +1,2 @@
+# Copyright (c) Jupyter Development Team.
+# Distributed under the terms of the Modified BSD License.

jupyter_builder/extension_commands/build.py

@@ -0,0 +1,55 @@
+# Copyright (c) Jupyter Development Team.
+# Distributed under the terms of the Modified BSD License.
+
+import os
+
+from traitlets import Bool, Unicode
+
+from ..base_extension_app import BaseExtensionApp
+from ..federated_extensions import build_labextension
+
+HERE = os.path.dirname(os.path.abspath(__file__))
+
+
+class BuildLabExtensionApp(BaseExtensionApp):
+    description = "(developer) Build labextension"
+
+    static_url = Unicode("", config=True, help="Sets the url for static assets when building")
+
+    development = Bool(False, config=True, help="Build in development mode")
+
+    source_map = Bool(False, config=True, help="Generate source maps")
+
+    core_path = Unicode(
+        os.path.join(HERE, "staging"),
+        config=True,
+        help="Directory containing core application package.json file",
+    )
+
+    aliases = {
+        "static-url": "BuildLabExtensionApp.static_url",
+        "development": "BuildLabExtensionApp.development",
+        "source-map": "BuildLabExtensionApp.source_map",
+        "core-path": "BuildLabExtensionApp.core_path",
+    }
+
+    def run_task(self):
+        self.extra_args = self.extra_args or [os.getcwd()]
+        build_labextension(
+            self.extra_args[0],
+            logger=self.log,
+            development=self.development,
+            static_url=self.static_url or None,
+            source_map=self.source_map,
+            core_path=self.core_path or None,
+        )
+
+
+def main():
+    app = BuildLabExtensionApp()
+    app.initialize()
+    app.start()
+
+
+if __name__ == "__main__":
+    main()

jupyter_builder/extension_commands/develop.py

@@ -0,0 +1,58 @@
+# Copyright (c) Jupyter Development Team.
+# Distributed under the terms of the Modified BSD License.
+
+import os
+from copy import copy
+
+from jupyter_core.application import base_flags
+from traitlets import Bool, Unicode
+
+from ..base_extension_app import BaseExtensionApp
+from ..federated_extensions import develop_labextension_py
+
+flags = dict(base_flags)
+develop_flags = copy(flags)
+develop_flags["overwrite"] = (
+    {"DevelopLabExtensionApp": {"overwrite": True}},
+    "Overwrite files",
+)
+
+
+class DevelopLabExtensionApp(BaseExtensionApp):
+    description = "(developer) Develop labextension"
+
+    flags = develop_flags
+    user = Bool(False, config=True, help="Whether to do a user install")
+    sys_prefix = Bool(True, config=True, help="Use the sys.prefix as the prefix")
+    overwrite = Bool(False, config=True, help="Whether to overwrite files")  # flags
+    symlink = Bool(True, config=False, help="Whether to use a symlink")
+
+    labextensions_dir = Unicode(
+        "",
+        config=True,
+        help="Full path to labextensions dir (probably use prefix or user)",
+    )
+
+    def run_task(self):
+        """Add config for this labextension"""
+        self.extra_args = self.extra_args or [os.getcwd()]
+        for arg in self.extra_args:
+            develop_labextension_py(
+                arg,
+                user=self.user,
+                sys_prefix=self.sys_prefix,
+                labextensions_dir=self.labextensions_dir,
+                logger=self.log,
+                overwrite=self.overwrite,
+                symlink=self.symlink,
+            )
+
+
+def main():
+    app = DevelopLabExtensionApp()
+    app.initialize()
+    app.start()
+
+
+if __name__ == "__main__":
+    main()