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"""Functions for working with config.h files.
"""
from pathlib import Path
import re
from milc import cli
from qmk.comment_remover import comment_remover
default_key_entry = {'x': -1, 'y': 0, 'w': 1}
single_comment_regex = re.compile(r'\s+/[/*].*$')
multi_comment_regex = re.compile(r'/\*(.|\n)*?\*/', re.MULTILINE)
def strip_line_comment(string):
"""Removes comments from a single line string.
"""
return single_comment_regex.sub('', string)
def strip_multiline_comment(string):
"""Removes comments from a single line string.
"""
return multi_comment_regex.sub('', string)
def c_source_files(dir_names):
"""Returns a list of all *.c, *.h, and *.cpp files for a given list of directories
Args:
dir_names
List of directories relative to `qmk_firmware`.
"""
files = []
for dir in dir_names:
files.extend(file for file in Path(dir).glob('**/*') if file.suffix in ['.c', '.h', '.cpp'])
return files
def find_layouts(file):
"""Returns list of parsed LAYOUT preprocessor macros found in the supplied include file.
"""
file = Path(file)
aliases = {} # Populated with all `#define`s that aren't functions
parsed_layouts = {}
# Search the file for LAYOUT macros and aliases
file_contents = file.read_text(encoding='utf-8')
file_contents = comment_remover(file_contents)
file_contents = file_contents.replace('\\\n', '')
for line in file_contents.split('\n'):
if line.startswith('#define') and '(' in line and 'LAYOUT' in line:
# We've found a LAYOUT macro
macro_name, layout, matrix = _parse_layout_macro(line.strip())
# Reject bad macro names
if macro_name.startswith('LAYOUT_kc') or not macro_name.startswith('LAYOUT'):
continue
# Parse the matrix data
matrix_locations = _parse_matrix_locations(matrix, file, macro_name)
# Parse the layout entries into a basic structure
default_key_entry['x'] = -1 # Set to -1 so _default_key(key) will increment it to 0
layout = layout.strip()
parsed_layout = [_default_key(key) for key in layout.split(',')]
for i, key in enumerate(parsed_layout):
if 'label' not in key:
cli.log.error('Invalid LAYOUT macro in %s: Empty parameter name in macro %s at pos %s.', file, macro_name, i)
elif key['label'] in matrix_locations:
key['matrix'] = matrix_locations[key['label']]
parsed_layouts[macro_name] = {
'layout': parsed_layout,
'filename': str(file),
}
elif '#define' in line:
# Attempt to extract a new layout alias
try:
_, pp_macro_name, pp_macro_text = line.strip().split(' ', 2)
aliases[pp_macro_name] = pp_macro_text
except ValueError:
continue
return parsed_layouts, aliases
def parse_config_h_file(config_h_file, config_h=None):
"""Extract defines from a config.h file.
"""
if not config_h:
config_h = {}
config_h_file = Path(config_h_file)
if config_h_file.exists():
config_h_text = config_h_file.read_text(encoding='utf-8')
config_h_text = config_h_text.replace('\\\n', '')
config_h_text = strip_multiline_comment(config_h_text)
for linenum, line in enumerate(config_h_text.split('\n')):
line = strip_line_comment(line).strip()
if not line:
continue
line = line.split()
if line[0] == '#define':
if len(line) == 1:
cli.log.error('%s: Incomplete #define! On or around line %s' % (config_h_file, linenum))
elif len(line) == 2:
config_h[line[1]] = True
else:
config_h[line[1]] = ' '.join(line[2:])
elif line[0] == '#undef':
if len(line) == 2:
if line[1] in config_h:
if config_h[line[1]] is True:
del config_h[line[1]]
else:
config_h[line[1]] = False
else:
cli.log.error('%s: Incomplete #undef! On or around line %s' % (config_h_file, linenum))
return config_h
def _default_key(label=None):
"""Increment x and return a copy of the default_key_entry.
"""
default_key_entry['x'] += 1
new_key = default_key_entry.copy()
if label:
new_key['label'] = label
return new_key
def _parse_layout_macro(layout_macro):
"""Split the LAYOUT macro into its constituent parts
"""
layout_macro = layout_macro.replace('\\', '').replace(' ', '').replace('\t', '').replace('#define', '')
macro_name, layout = layout_macro.split('(', 1)
layout, matrix = layout.split(')', 1)
return macro_name, layout, matrix
def _parse_matrix_locations(matrix, file, macro_name):
"""Parse raw matrix data into a dictionary keyed by the LAYOUT identifier.
"""
matrix_locations = {}
for row_num, row in enumerate(matrix.split('},{')):
if row.startswith('LAYOUT'):
cli.log.error('%s: %s: Nested layout macro detected. Matrix data not available!', file, macro_name)
break
row = row.replace('{', '').replace('}', '')
for col_num, identifier in enumerate(row.split(',')):
if identifier != 'KC_NO':
matrix_locations[identifier] = [row_num, col_num]
return matrix_locations
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