New command: qmk lint (#10761)

* Basic qmk lint command

* check for keymap readme

* change the workflow from qmk info to qmk lint

* add a strict mode

* parsing -> parse

* document qmk lint

* small info logging cleanup

* Apply suggestions from code review

Co-authored-by: Ryan <fauxpark@gmail.com>

* honor --strict in more places

* change the job name to lint

Co-authored-by: Ryan <fauxpark@gmail.com>

2 files changed, 71 insertions, 0 deletions

diff --git a/lib/python/qmk/cli/__init__.py b/lib/python/qmk/cli/__init__.py
index 3868f94bb2..77724a2448 100644
--- a/lib/python/qmk/cli/__init__.py
+++ b/lib/python/qmk/cli/__init__.py
@@ -19,6 +19,7 @@ from . import hello
 from . import info
 from . import json
 from . import json2c
+from . import lint
 from . import list
 from . import kle2json
 from . import new
diff --git a/lib/python/qmk/cli/lint.py b/lib/python/qmk/cli/lint.py
new file mode 100644
index 0000000000..74467021e0
--- /dev/null
+++ b/lib/python/qmk/cli/lint.py
@@ -0,0 +1,70 @@
+"""Command to look over a keyboard/keymap and check for common mistakes.
+"""
+from milc import cli
+
+from qmk.decorators import automagic_keyboard, automagic_keymap
+from qmk.info import info_json
+from qmk.keymap import locate_keymap
+from qmk.path import is_keyboard, keyboard
+
+
+@cli.argument('--strict', action='store_true', help='Treat warnings as errors.')
+@cli.argument('-kb', '--keyboard', help='The keyboard to check.')
+@cli.argument('-km', '--keymap', help='The keymap to check.')
+@cli.subcommand('Check keyboard and keymap for common mistakes.')
+@automagic_keyboard
+@automagic_keymap
+def lint(cli):
+    """Check keyboard and keymap for common mistakes.
+    """
+    if not cli.config.lint.keyboard:
+        cli.log.error('Missing required argument: --keyboard')
+        cli.print_help()
+        return False
+
+    if not is_keyboard(cli.config.lint.keyboard):
+        cli.log.error('No such keyboard: %s', cli.config.lint.keyboard)
+        return False
+
+    # Gather data about the keyboard.
+    ok = True
+    keyboard_path = keyboard(cli.config.lint.keyboard)
+    keyboard_info = info_json(cli.config.lint.keyboard)
+    readme_path = keyboard_path / 'readme.md'
+
+    # Check for errors in the info.json
+    if keyboard_info['parse_errors']:
+        ok = False
+        cli.log.error('Errors found when generating info.json.')
+
+    if cli.config.lint.strict and keyboard_info['parse_warnings']:
+        ok = False
+        cli.log.error('Warnings found when generating info.json (Strict mode enabled.)')
+
+    # Check for a readme.md and warn if it doesn't exist
+    if not readme_path.exists():
+        ok = False
+        cli.log.error('Missing %s', readme_path)
+
+    # Keymap specific checks
+    if cli.config.lint.keymap:
+        keymap_path = locate_keymap(cli.config.lint.keyboard, cli.config.lint.keymap)
+
+        if not keymap_path:
+            ok = False
+            cli.log.error("Can't find %s keymap for %s keyboard.", cli.config.lint.keymap, cli.config.lint.keyboard)
+        else:
+            keymap_readme = keymap_path.parent / 'readme.md'
+            if not keymap_readme.exists():
+                cli.log.warning('Missing %s', keymap_readme)
+
+                if cli.config.lint.strict:
+                    ok = False
+
+    # Check and report the overall status
+    if ok:
+        cli.log.info('Lint check passed!')
+        return True
+
+    cli.log.error('Lint check failed!')
+    return False