Minor alignment of rgb_breathe_table generator (#19403)

1 files changed, 24 insertions, 25 deletions

diff --git a/lib/python/qmk/cli/generate/rgb_breathe_table.py b/lib/python/qmk/cli/generate/rgb_breathe_table.py
index 8cf83238e1..55c80f6015 100644
--- a/lib/python/qmk/cli/generate/rgb_breathe_table.py
+++ b/lib/python/qmk/cli/generate/rgb_breathe_table.py
@@ -5,7 +5,9 @@ from argparse import ArgumentTypeError
 
 from milc import cli
 
-import qmk.path
+from qmk.constants import GPL2_HEADER_C_LIKE, GENERATED_HEADER_C_LIKE
+from qmk.commands import dump_lines
+from qmk.path import normpath
 
 
 def breathing_center(value):
@@ -24,17 +26,10 @@ def breathing_max(value):
         raise ArgumentTypeError('Breathing max must be between 0 and 255')
 
 
-@cli.argument('-c', '--center', arg_only=True, type=breathing_center, default=1.85, help='The breathing center value, from 1 to 2.7. Default: 1.85')
-@cli.argument('-m', '--max', arg_only=True, type=breathing_max, default=255, help='The breathing maximum value, from 0 to 255. Default: 255')
-@cli.argument('-o', '--output', arg_only=True, type=qmk.path.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('Generates an RGB Light breathing table header.')
-def generate_rgb_breathe_table(cli):
-    """Generate a rgblight_breathe_table.h file containing a breathing LUT for RGB Lighting (Underglow) feature.
-    """
+def _generate_table(lines, center, maximum):
     breathe_values = [0] * 256
     for pos in range(0, 256):
-        breathe_values[pos] = (int)((math.exp(math.sin((pos / 255) * math.pi)) - cli.args.center / math.e) * (cli.args.max / (math.e - 1 / math.e)))
+        breathe_values[pos] = (int)((math.exp(math.sin((pos / 255) * math.pi)) - center / math.e) * (maximum / (math.e - 1 / math.e)))
 
     values_template = ''
     for s in range(0, 3):
@@ -51,11 +46,7 @@ def generate_rgb_breathe_table(cli):
         values_template += '#endif'
         values_template += '\n\n' if s < 2 else ''
 
-    table_template = '''#pragma once
-
-#define RGBLIGHT_EFFECT_BREATHE_TABLE
-
-// clang-format off
+    table_template = '''#define RGBLIGHT_EFFECT_BREATHE_TABLE
 
 // Breathing center: {0:.2f}
 // Breathing max:    {1:d}
@@ -65,15 +56,23 @@ const uint8_t PROGMEM rgblight_effect_breathe_table[] = {{
 }};
 
 static const int table_scale = 256 / sizeof(rgblight_effect_breathe_table);
-'''.format(cli.args.center, cli.args.max, values_template)
+'''.format(center, maximum, values_template)
+    lines.append(table_template)
 
-    if cli.args.output:
-        cli.args.output.parent.mkdir(parents=True, exist_ok=True)
-        if cli.args.output.exists():
-            cli.args.output.replace(cli.args.output.parent / (cli.args.output.name + '.bak'))
-        cli.args.output.write_text(table_template)
 
-        if not cli.args.quiet:
-            cli.log.info('Wrote header to %s.', cli.args.output)
-    else:
-        print(table_template)
+@cli.argument('-c', '--center', arg_only=True, type=breathing_center, default=1.85, help='The breathing center value, from 1 to 2.7. Default: 1.85')
+@cli.argument('-m', '--max', arg_only=True, type=breathing_max, default=255, help='The breathing maximum value, from 0 to 255. Default: 255')
+@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('Generates an RGB Light breathing table header.')
+def generate_rgb_breathe_table(cli):
+    """Generate a rgblight_breathe_table.h file containing a breathing LUT for RGB Lighting (Underglow) feature.
+    """
+
+    # Build the header file.
+    header_lines = [GPL2_HEADER_C_LIKE, GENERATED_HEADER_C_LIKE, '#pragma once', '// clang-format off']
+
+    _generate_table(header_lines, cli.args.center, cli.args.max)
+
+    # Show the results
+    dump_lines(cli.args.output, header_lines, cli.args.quiet)