1 files changed, 88 insertions, 0 deletions
diff --git a/lib/python/qmk/cli/generate/keycodes.py b/lib/python/qmk/cli/generate/keycodes.py
new file mode 100644
index 0000000000..29b7db3c80
--- /dev/null
+++ b/lib/python/qmk/cli/generate/keycodes.py
@@ -0,0 +1,88 @@
+"""Used by the make system to generate keycodes.h from keycodes_{version}.json
+"""
+from milc import cli
+
+from qmk.constants import GPL2_HEADER_C_LIKE, GENERATED_HEADER_C_LIKE
+from qmk.commands import dump_lines
+from qmk.path import normpath
+from qmk.keycodes import load_spec
+
+
+def _generate_ranges(lines, keycodes):
+    lines.append('')
+    lines.append('enum qk_keycode_ranges {')
+    lines.append('// Ranges')
+    for key, value in keycodes["ranges"].items():
+        lo, mask = map(lambda x: int(x, 16), key.split("/"))
+        hi = lo + mask
+        define = value.get("define")
+        lines.append(f'    {define.ljust(30)} = 0x{lo:04X},')
+        lines.append(f'    {(define + "_MAX").ljust(30)} = 0x{hi:04X},')
+    lines.append('};')
+
+
+def _generate_defines(lines, keycodes):
+    lines.append('')
+    lines.append('enum qk_keycode_defines {')
+    lines.append('// Keycodes')
+    for key, value in keycodes["keycodes"].items():
+        lines.append(f'    {value.get("key")} = {key},')
+
+    lines.append('')
+    lines.append('// Alias')
+    for key, value in keycodes["keycodes"].items():
+        temp = value.get("key")
+        for alias in value.get("aliases", []):
+            lines.append(f'    {alias.ljust(10)} = {temp},')
+
+    lines.append('};')
+
+
+def _generate_helpers(lines, keycodes):
+    lines.append('')
+    lines.append('// Range Helpers')
+    for value in keycodes["ranges"].values():
+        define = value.get("define")
+        lines.append(f'#define IS_{define}(code) ((code) >= {define} && (code) <= {define + "_MAX"})')
+
+    # extract min/max
+    temp = {}
+    for key, value in keycodes["keycodes"].items():
+        group = value.get('group', None)
+        if not group:
+            continue
+        if group not in temp:
+            temp[group] = [0xFFFF, 0]
+        key = int(key, 16)
+        if key < temp[group][0]:
+            temp[group][0] = key
+        if key > temp[group][1]:
+            temp[group][1] = key
+
+    lines.append('')
+    lines.append('// Group Helpers')
+    for group, codes in temp.items():
+        lo = keycodes["keycodes"][f'0x{codes[0]:04X}']['key']
+        hi = keycodes["keycodes"][f'0x{codes[1]:04X}']['key']
+        lines.append(f'#define IS_{ group.upper() }_KEYCODE(code) ((code) >= {lo} && (code) <= {hi})')
+
+
+@cli.argument('-v', '--version', arg_only=True, required=True, help='Version of keycodes to generate.')
+@cli.argument('-o', '--output', arg_only=True, type=normpath, help='File to write to')
+@cli.argument('-q', '--quiet', arg_only=True, action='store_true', help="Quiet mode, only output error messages")
+@cli.subcommand('Used by the make system to generate keycodes.h from keycodes_{version}.json', hidden=True)
+def generate_keycodes(cli):
+    """Generates the keycodes.h file.
+    """
+
+    # Build the keycodes.h file.
+    keycodes_h_lines = [GPL2_HEADER_C_LIKE, GENERATED_HEADER_C_LIKE, '#pragma once', '// clang-format off']
+
+    keycodes = load_spec(cli.args.version)
+
+    _generate_ranges(keycodes_h_lines, keycodes)
+    _generate_defines(keycodes_h_lines, keycodes)
+    _generate_helpers(keycodes_h_lines, keycodes)
+
+    # Show the results
+    dump_lines(cli.args.output, keycodes_h_lines, cli.args.quiet)