From 409c610543ffb62677d1162be868a2e44913a943 Mon Sep 17 00:00:00 2001
From: Erovia <erovia@users.noreply.github.com>
Date: Tue, 8 Oct 2019 21:50:21 +0200
Subject: [PATCH] CLI: add support for list_keymaps

List all the available keymaps for a given keyboard
---
 lib/python/qmk/cli/list/__init__.py |  1 +
 lib/python/qmk/cli/list/keymaps.py  | 84 +++++++++++++++++++++++++++++
 2 files changed, 85 insertions(+)
 create mode 100644 lib/python/qmk/cli/list/keymaps.py

diff --git a/lib/python/qmk/cli/list/__init__.py b/lib/python/qmk/cli/list/__init__.py
index c36ba6954..d83cd20b5 100644
--- a/lib/python/qmk/cli/list/__init__.py
+++ b/lib/python/qmk/cli/list/__init__.py
@@ -1 +1,2 @@
 from . import keyboards
+from . import keymaps
diff --git a/lib/python/qmk/cli/list/keymaps.py b/lib/python/qmk/cli/list/keymaps.py
new file mode 100644
index 000000000..709a5b9f9
--- /dev/null
+++ b/lib/python/qmk/cli/list/keymaps.py
@@ -0,0 +1,84 @@
+"""List the keymaps for a specific keyboard
+"""
+import os
+import re
+import glob
+from bs4 import UnicodeDammit
+
+from milc import cli
+
+def unicode_text(filename):
+    """Returns the contents of filename as a UTF-8 string. Tries to DTRT when it comes to encoding.
+    """
+    with open(filename, 'rb') as fd:
+        text = UnicodeDammit(fd.read())
+
+    if text.contains_replacement_characters:
+        log_warning('%s: Could not determine file encoding, some characters were replaced.' % (filename,))
+
+    return text.unicode_markup or ''
+
+
+def unicode_lines(filename):
+    """Returns the contents of filename as a UTF-8 string. Tries to DTRT when it comes to encoding.
+    """
+    return unicode_text(filename).split('\n')
+
+def parse_rules_mk(keyboard):
+    base_path = os.path.join(os.getcwd(), "keyboards", keyboard) + os.path.sep
+    rules_mk_path_wildcard = os.path.join(base_path, "**", "rules.mk")
+    paths = [path for path in glob.iglob(rules_mk_path_wildcard, recursive=True) if "keymaps" not in path]
+
+    rules_mk = list()
+    for file in paths:
+        rules_mk_content = unicode_lines(file)
+        parsed_file = dict()
+        for line in rules_mk_content:
+            found = re.search(r'^\s*(\w+)\s*=\s*((?:\s*\w+)+)', line)
+            if found:
+                parsed_file[found.group(1)] = found.group(2)
+        rules_mk.append(parsed_file)
+    return rules_mk
+
+@cli.argument('-kb', '--keyboard', help='Specify keyboard name. Example: 1upkeyboards/1up60hse')
+@cli.subcommand("List the keymaps for a specific keyboard")
+def list_keymaps(cli):
+    """List the keymaps for a specific keyboard
+    """
+    # ask for user input if keyboard was not provided in the command line
+    keyboard = cli.config.list_keymaps.keyboard if cli.config.list_keymaps.keyboard else input("Keyboard Name: ")
+
+    kb_base_path = os.path.join(os.getcwd(), "keyboards", keyboard) + os.path.sep
+    km_path_wildcard = os.path.join(kb_base_path, "**", "keymap.c")
+
+    # find everywhere we have rules.mk where keymaps isn't in the path
+    km_paths = [path for path in glob.iglob(km_path_wildcard, recursive=True) if 'keymaps' in path]
+
+    # replace the keyboard directory's path prefix with the keyboard's name and remove the keymap.c suffix
+    km_find_name = lambda path: path.replace(kb_base_path, keyboard + os.path.sep).replace("/keymaps/", ":").replace(os.path.sep + "keymap.c", "")
+    names = list(map(km_find_name, km_paths))
+
+    # get all the rules.mk files for the keyboard
+    rules_mk = parse_rules_mk(keyboard)
+
+    # find all the supported layouts
+    all_supported_layouts = set()
+    for version in rules_mk:
+        if "LAYOUTS" in version:
+            for layout in version["LAYOUTS"].split():
+                all_supported_layouts.add(layout)
+
+    for layout in all_supported_layouts:
+        cl_base_path = os.path.join(os.getcwd(), "layouts", "community", layout) + os.path.sep
+        cl_path_wildcard = os.path.join(cl_base_path, "**", "keymap.c")
+        # find all the keymap.c files under the community layouts
+        cl_paths = [path for path in glob.iglob(cl_path_wildcard, recursive=True)]
+        # replace the community layouts directory's path with the keyboard's name and remove the keymap.c suffix
+        cl_find_name = lambda path: path.replace(cl_base_path, keyboard + ":").replace(os.path.sep + "keymap.c", "")
+        names = names + list(map(cl_find_name, cl_paths))
+
+    names.sort()
+
+    for name in names:
+        # We echo instead of cli.log.info to allow easier piping of this output
+        cli.echo(name)