[CLI] Add a subcommand for getting information about a keyboard (#8666)
You can now use `qmk info` to get information about keyboards and keymaps. Co-authored-by: Erovia <Erovia@users.noreply.github.com>miryoku-merge-master
Zach White
6 years ago
committed by
GitHub
parent
5d3bf8a050
commit
751316c344
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"""Functions for working with config.h files.
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"""
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from pathlib import Path
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from milc import cli
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from qmk.comment_remover import comment_remover
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default_key_entry = {'x': -1, 'y': 0, 'w': 1}
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def c_source_files(dir_names):
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"""Returns a list of all *.c, *.h, and *.cpp files for a given list of directories
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Args:
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dir_names
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List of directories relative to `qmk_firmware`.
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"""
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files = []
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for dir in dir_names:
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files.extend(file for file in Path(dir).glob('**/*') if file.suffix in ['.c', '.h', '.cpp'])
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return files
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def find_layouts(file):
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"""Returns list of parsed LAYOUT preprocessor macros found in the supplied include file.
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"""
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file = Path(file)
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aliases = {} # Populated with all `#define`s that aren't functions
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parsed_layouts = {}
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# Search the file for LAYOUT macros and aliases
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file_contents = file.read_text()
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file_contents = comment_remover(file_contents)
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file_contents = file_contents.replace('\\\n', '')
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for line in file_contents.split('\n'):
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if line.startswith('#define') and '(' in line and 'LAYOUT' in line:
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# We've found a LAYOUT macro
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macro_name, layout, matrix = _parse_layout_macro(line.strip())
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# Reject bad macro names
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if macro_name.startswith('LAYOUT_kc') or not macro_name.startswith('LAYOUT'):
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continue
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# Parse the matrix data
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matrix_locations = _parse_matrix_locations(matrix, file, macro_name)
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# Parse the layout entries into a basic structure
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default_key_entry['x'] = -1 # Set to -1 so _default_key(key) will increment it to 0
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layout = layout.strip()
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parsed_layout = [_default_key(key) for key in layout.split(',')]
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for key in parsed_layout:
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key['matrix'] = matrix_locations.get(key['label'])
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parsed_layouts[macro_name] = {
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'key_count': len(parsed_layout),
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'layout': parsed_layout,
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'filename': str(file),
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}
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elif '#define' in line:
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# Attempt to extract a new layout alias
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try:
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_, pp_macro_name, pp_macro_text = line.strip().split(' ', 2)
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aliases[pp_macro_name] = pp_macro_text
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except ValueError:
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continue
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# Populate our aliases
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for alias, text in aliases.items():
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if text in parsed_layouts and 'KEYMAP' not in alias:
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parsed_layouts[alias] = parsed_layouts[text]
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return parsed_layouts
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def parse_config_h_file(config_h_file, config_h=None):
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"""Extract defines from a config.h file.
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"""
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if not config_h:
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config_h = {}
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config_h_file = Path(config_h_file)
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if config_h_file.exists():
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config_h_text = config_h_file.read_text()
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config_h_text = config_h_text.replace('\\\n', '')
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for linenum, line in enumerate(config_h_text.split('\n')):
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line = line.strip()
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if '//' in line:
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line = line[:line.index('//')].strip()
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if not line:
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continue
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line = line.split()
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if line[0] == '#define':
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if len(line) == 1:
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cli.log.error('%s: Incomplete #define! On or around line %s' % (config_h_file, linenum))
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elif len(line) == 2:
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config_h[line[1]] = True
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else:
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config_h[line[1]] = ' '.join(line[2:])
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elif line[0] == '#undef':
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if len(line) == 2:
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if line[1] in config_h:
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if config_h[line[1]] is True:
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del config_h[line[1]]
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else:
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config_h[line[1]] = False
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else:
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cli.log.error('%s: Incomplete #undef! On or around line %s' % (config_h_file, linenum))
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return config_h
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def _default_key(label=None):
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"""Increment x and return a copy of the default_key_entry.
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"""
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default_key_entry['x'] += 1
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new_key = default_key_entry.copy()
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if label:
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new_key['label'] = label
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return new_key
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def _parse_layout_macro(layout_macro):
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"""Split the LAYOUT macro into its constituent parts
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"""
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layout_macro = layout_macro.replace('\\', '').replace(' ', '').replace('\t', '').replace('#define', '')
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macro_name, layout = layout_macro.split('(', 1)
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layout, matrix = layout.split(')', 1)
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return macro_name, layout, matrix
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def _parse_matrix_locations(matrix, file, macro_name):
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"""Parse raw matrix data into a dictionary keyed by the LAYOUT identifier.
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"""
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matrix_locations = {}
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for row_num, row in enumerate(matrix.split('},{')):
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if row.startswith('LAYOUT'):
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cli.log.error('%s: %s: Nested layout macro detected. Matrix data not available!', file, macro_name)
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break
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row = row.replace('{', '').replace('}', '')
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for col_num, identifier in enumerate(row.split(',')):
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if identifier != 'KC_NO':
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matrix_locations[identifier] = (row_num, col_num)
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return matrix_locations
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"""Keyboard information script.
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Compile an info.json for a particular keyboard and pretty-print it.
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"""
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import json
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from milc import cli
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from qmk.decorators import automagic_keyboard, automagic_keymap
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from qmk.keyboard import render_layouts, render_layout
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from qmk.keymap import locate_keymap
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from qmk.info import info_json
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from qmk.path import is_keyboard
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ROW_LETTERS = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnop'
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COL_LETTERS = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijilmnopqrstuvwxyz'
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def show_keymap(info_json, title_caps=True):
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"""Render the keymap in ascii art.
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"""
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keymap_path = locate_keymap(cli.config.info.keyboard, cli.config.info.keymap)
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if keymap_path and keymap_path.suffix == '.json':
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if title_caps:
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cli.echo('{fg_blue}Keymap "%s"{fg_reset}:', cli.config.info.keymap)
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else:
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cli.echo('{fg_blue}keymap_%s{fg_reset}:', cli.config.info.keymap)
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keymap_data = json.load(keymap_path.open())
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layout_name = keymap_data['layout']
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for layer_num, layer in enumerate(keymap_data['layers']):
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if title_caps:
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cli.echo('{fg_cyan}Layer %s{fg_reset}:', layer_num)
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else:
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cli.echo('{fg_cyan}layer_%s{fg_reset}:', layer_num)
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print(render_layout(info_json['layouts'][layout_name]['layout'], layer))
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def show_layouts(kb_info_json, title_caps=True):
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"""Render the layouts with info.json labels.
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"""
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for layout_name, layout_art in render_layouts(kb_info_json).items():
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title = layout_name.title() if title_caps else layout_name
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cli.echo('{fg_cyan}%s{fg_reset}:', title)
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print(layout_art) # Avoid passing dirty data to cli.echo()
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def show_matrix(info_json, title_caps=True):
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"""Render the layout with matrix labels in ascii art.
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"""
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for layout_name, layout in info_json['layouts'].items():
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# Build our label list
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labels = []
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for key in layout['layout']:
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if key['matrix']:
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row = ROW_LETTERS[key['matrix'][0]]
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col = COL_LETTERS[key['matrix'][1]]
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labels.append(row + col)
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else:
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labels.append('')
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# Print the header
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if title_caps:
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cli.echo('{fg_blue}Matrix for "%s"{fg_reset}:', layout_name)
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else:
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cli.echo('{fg_blue}matrix_%s{fg_reset}:', layout_name)
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print(render_layout(info_json['layouts'][layout_name]['layout'], labels))
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@cli.argument('-kb', '--keyboard', help='Keyboard to show info for.')
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@cli.argument('-km', '--keymap', help='Show the layers for a JSON keymap too.')
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@cli.argument('-l', '--layouts', action='store_true', help='Render the layouts.')
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@cli.argument('-m', '--matrix', action='store_true', help='Render the layouts with matrix information.')
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@cli.argument('-f', '--format', default='friendly', arg_only=True, help='Format to display the data in (friendly, text, json) (Default: friendly).')
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@cli.subcommand('Keyboard information.')
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@automagic_keyboard
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@automagic_keymap
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def info(cli):
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"""Compile an info.json for a particular keyboard and pretty-print it.
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"""
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# Determine our keyboard(s)
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if not is_keyboard(cli.config.info.keyboard):
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cli.log.error('Invalid keyboard: %s!', cli.config.info.keyboard)
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exit(1)
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# Build the info.json file
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kb_info_json = info_json(cli.config.info.keyboard)
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# Output in the requested format
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if cli.args.format == 'json':
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print(json.dumps(kb_info_json))
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exit()
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if cli.args.format == 'text':
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for key in sorted(kb_info_json):
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if key == 'layouts':
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cli.echo('{fg_blue}layouts{fg_reset}: %s', ', '.join(sorted(kb_info_json['layouts'].keys())))
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else:
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cli.echo('{fg_blue}%s{fg_reset}: %s', key, kb_info_json[key])
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if cli.config.info.layouts:
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show_layouts(kb_info_json, False)
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if cli.config.info.matrix:
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show_matrix(kb_info_json, False)
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if cli.config_source.info.keymap and cli.config_source.info.keymap != 'config_file':
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show_keymap(kb_info_json, False)
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elif cli.args.format == 'friendly':
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cli.echo('{fg_blue}Keyboard Name{fg_reset}: %s', kb_info_json.get('keyboard_name', 'Unknown'))
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cli.echo('{fg_blue}Manufacturer{fg_reset}: %s', kb_info_json.get('manufacturer', 'Unknown'))
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if 'url' in kb_info_json:
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cli.echo('{fg_blue}Website{fg_reset}: %s', kb_info_json['url'])
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if kb_info_json.get('maintainer') == 'qmk':
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cli.echo('{fg_blue}Maintainer{fg_reset}: QMK Community')
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else:
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cli.echo('{fg_blue}Maintainer{fg_reset}: %s', kb_info_json.get('maintainer', 'qmk'))
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cli.echo('{fg_blue}Keyboard Folder{fg_reset}: %s', kb_info_json.get('keyboard_folder', 'Unknown'))
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cli.echo('{fg_blue}Layouts{fg_reset}: %s', ', '.join(sorted(kb_info_json['layouts'].keys())))
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if 'width' in kb_info_json and 'height' in kb_info_json:
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cli.echo('{fg_blue}Size{fg_reset}: %s x %s' % (kb_info_json['width'], kb_info_json['height']))
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cli.echo('{fg_blue}Processor{fg_reset}: %s', kb_info_json.get('processor', 'Unknown'))
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cli.echo('{fg_blue}Bootloader{fg_reset}: %s', kb_info_json.get('bootloader', 'Unknown'))
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if cli.config.info.layouts:
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show_layouts(kb_info_json, True)
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if cli.config.info.matrix:
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show_matrix(kb_info_json, True)
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if cli.config_source.info.keymap and cli.config_source.info.keymap != 'config_file':
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show_keymap(kb_info_json, True)
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else:
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cli.log.error('Unknown format: %s', cli.args.format)
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"""Removes C/C++ style comments from text.
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Gratefully adapted from https://stackoverflow.com/a/241506
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"""
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import re
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comment_pattern = re.compile(r'//.*?$|/\*.*?\*/|\'(?:\\.|[^\\\'])*\'|"(?:\\.|[^\\"])*"', re.DOTALL | re.MULTILINE)
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def _comment_stripper(match):
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"""Removes C/C++ style comments from a regex match.
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"""
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s = match.group(0)
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return ' ' if s.startswith('/') else s
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def comment_remover(text):
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"""Remove C/C++ style comments from text.
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"""
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return re.sub(comment_pattern, _comment_stripper, text)
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"""Functions that help us generate and use info.json files.
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"""
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import json
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from glob import glob
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from pathlib import Path
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from milc import cli
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from qmk.constants import ARM_PROCESSORS, AVR_PROCESSORS, VUSB_PROCESSORS
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from qmk.c_parse import find_layouts
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from qmk.keyboard import config_h, rules_mk
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from qmk.math import compute
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def info_json(keyboard):
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"""Generate the info.json data for a specific keyboard.
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"""
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info_data = {
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'keyboard_name': str(keyboard),
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'keyboard_folder': str(keyboard),
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'layouts': {},
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'maintainer': 'qmk',
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}
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for layout_name, layout_json in _find_all_layouts(keyboard).items():
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if not layout_name.startswith('LAYOUT_kc'):
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info_data['layouts'][layout_name] = layout_json
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info_data = merge_info_jsons(keyboard, info_data)
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info_data = _extract_config_h(info_data)
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info_data = _extract_rules_mk(info_data)
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return info_data
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def _extract_config_h(info_data):
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"""Pull some keyboard information from existing rules.mk files
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"""
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config_c = config_h(info_data['keyboard_folder'])
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row_pins = config_c.get('MATRIX_ROW_PINS', '').replace('{', '').replace('}', '').strip()
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col_pins = config_c.get('MATRIX_COL_PINS', '').replace('{', '').replace('}', '').strip()
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direct_pins = config_c.get('DIRECT_PINS', '').replace(' ', '')[1:-1]
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info_data['diode_direction'] = config_c.get('DIODE_DIRECTION')
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info_data['matrix_size'] = {
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'rows': compute(config_c.get('MATRIX_ROWS', '0')),
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'cols': compute(config_c.get('MATRIX_COLS', '0')),
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}
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info_data['matrix_pins'] = {}
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if row_pins:
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info_data['matrix_pins']['rows'] = row_pins.split(',')
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if col_pins:
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info_data['matrix_pins']['cols'] = col_pins.split(',')
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if direct_pins:
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direct_pin_array = []
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for row in direct_pins.split('},{'):
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if row.startswith('{'):
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row = row[1:]
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if row.endswith('}'):
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row = row[:-1]
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direct_pin_array.append([])
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for pin in row.split(','):
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if pin == 'NO_PIN':
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pin = None
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direct_pin_array[-1].append(pin)
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info_data['matrix_pins']['direct'] = direct_pin_array
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info_data['usb'] = {
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'vid': config_c.get('VENDOR_ID'),
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'pid': config_c.get('PRODUCT_ID'),
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'device_ver': config_c.get('DEVICE_VER'),
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'manufacturer': config_c.get('MANUFACTURER'),
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'product': config_c.get('PRODUCT'),
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'description': config_c.get('DESCRIPTION'),
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}
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return info_data
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def _extract_rules_mk(info_data):
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"""Pull some keyboard information from existing rules.mk files
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"""
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rules = rules_mk(info_data['keyboard_folder'])
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mcu = rules.get('MCU')
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if mcu in ARM_PROCESSORS:
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arm_processor_rules(info_data, rules)
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elif mcu in AVR_PROCESSORS:
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avr_processor_rules(info_data, rules)
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else:
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cli.log.warning("%s: Unknown MCU: %s" % (info_data['keyboard_folder'], mcu))
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unknown_processor_rules(info_data, rules)
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return info_data
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def _find_all_layouts(keyboard):
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"""Looks for layout macros associated with this keyboard.
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"""
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layouts = {}
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rules = rules_mk(keyboard)
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keyboard_path = Path(rules.get('DEFAULT_FOLDER', keyboard))
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# Pull in all layouts defined in the standard files
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current_path = Path('keyboards/')
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for directory in keyboard_path.parts:
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current_path = current_path / directory
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keyboard_h = '%s.h' % (directory,)
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keyboard_h_path = current_path / keyboard_h
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if keyboard_h_path.exists():
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layouts.update(find_layouts(keyboard_h_path))
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if not layouts:
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# If we didn't find any layouts above we widen our search. This is error
|
||||
# prone which is why we want to encourage people to follow the standard above.
|
||||
cli.log.warning('%s: Falling back to searching for KEYMAP/LAYOUT macros.' % (keyboard))
|
||||
for file in glob('keyboards/%s/*.h' % keyboard):
|
||||
if file.endswith('.h'):
|
||||
these_layouts = find_layouts(file)
|
||||
if these_layouts:
|
||||
layouts.update(these_layouts)
|
||||
|
||||
if 'LAYOUTS' in rules:
|
||||
# Match these up against the supplied layouts
|
||||
supported_layouts = rules['LAYOUTS'].strip().split()
|
||||
for layout_name in sorted(layouts):
|
||||
if not layout_name.startswith('LAYOUT_'):
|
||||
continue
|
||||
layout_name = layout_name[7:]
|
||||
if layout_name in supported_layouts:
|
||||
supported_layouts.remove(layout_name)
|
||||
|
||||
if supported_layouts:
|
||||
cli.log.error('%s: Missing LAYOUT() macro for %s' % (keyboard, ', '.join(supported_layouts)))
|
||||
|
||||
return layouts
|
||||
|
||||
|
||||
def arm_processor_rules(info_data, rules):
|
||||
"""Setup the default info for an ARM board.
|
||||
"""
|
||||
info_data['processor_type'] = 'arm'
|
||||
info_data['bootloader'] = rules['BOOTLOADER'] if 'BOOTLOADER' in rules else 'unknown'
|
||||
info_data['processor'] = rules['MCU'] if 'MCU' in rules else 'unknown'
|
||||
info_data['protocol'] = 'ChibiOS'
|
||||
|
||||
if info_data['bootloader'] == 'unknown':
|
||||
if 'STM32' in info_data['processor']:
|
||||
info_data['bootloader'] = 'stm32-dfu'
|
||||
elif info_data.get('manufacturer') == 'Input Club':
|
||||
info_data['bootloader'] = 'kiibohd-dfu'
|
||||
|
||||
if 'STM32' in info_data['processor']:
|
||||
info_data['platform'] = 'STM32'
|
||||
elif 'MCU_SERIES' in rules:
|
||||
info_data['platform'] = rules['MCU_SERIES']
|
||||
elif 'ARM_ATSAM' in rules:
|
||||
info_data['platform'] = 'ARM_ATSAM'
|
||||
|
||||
return info_data
|
||||
|
||||
|
||||
def avr_processor_rules(info_data, rules):
|
||||
"""Setup the default info for an AVR board.
|
||||
"""
|
||||
info_data['processor_type'] = 'avr'
|
||||
info_data['bootloader'] = rules['BOOTLOADER'] if 'BOOTLOADER' in rules else 'atmel-dfu'
|
||||
info_data['platform'] = rules['ARCH'] if 'ARCH' in rules else 'unknown'
|
||||
info_data['processor'] = rules['MCU'] if 'MCU' in rules else 'unknown'
|
||||
info_data['protocol'] = 'V-USB' if rules.get('MCU') in VUSB_PROCESSORS else 'LUFA'
|
||||
|
||||
# FIXME(fauxpark/anyone): Eventually we should detect the protocol by looking at PROTOCOL inherited from mcu_selection.mk:
|
||||
# info_data['protocol'] = 'V-USB' if rules.get('PROTOCOL') == 'VUSB' else 'LUFA'
|
||||
|
||||
return info_data
|
||||
|
||||
|
||||
def unknown_processor_rules(info_data, rules):
|
||||
"""Setup the default keyboard info for unknown boards.
|
||||
"""
|
||||
info_data['bootloader'] = 'unknown'
|
||||
info_data['platform'] = 'unknown'
|
||||
info_data['processor'] = 'unknown'
|
||||
info_data['processor_type'] = 'unknown'
|
||||
info_data['protocol'] = 'unknown'
|
||||
|
||||
return info_data
|
||||
|
||||
|
||||
def merge_info_jsons(keyboard, info_data):
|
||||
"""Return a merged copy of all the info.json files for a keyboard.
|
||||
"""
|
||||
for info_file in find_info_json(keyboard):
|
||||
# Load and validate the JSON data
|
||||
with info_file.open('r') as info_fd:
|
||||
new_info_data = json.load(info_fd)
|
||||
|
||||
if not isinstance(new_info_data, dict):
|
||||
cli.log.error("Invalid file %s, root object should be a dictionary.", str(info_file))
|
||||
continue
|
||||
|
||||
# Copy whitelisted keys into `info_data`
|
||||
for key in ('keyboard_name', 'manufacturer', 'identifier', 'url', 'maintainer', 'processor', 'bootloader', 'width', 'height'):
|
||||
if key in new_info_data:
|
||||
info_data[key] = new_info_data[key]
|
||||
|
||||
# Merge the layouts in
|
||||
if 'layouts' in new_info_data:
|
||||
for layout_name, json_layout in new_info_data['layouts'].items():
|
||||
# Only pull in layouts we have a macro for
|
||||
if layout_name in info_data['layouts']:
|
||||
if info_data['layouts'][layout_name]['key_count'] != len(json_layout['layout']):
|
||||
cli.log.error('%s: %s: Number of elements in info.json does not match! info.json:%s != %s:%s', info_data['keyboard_folder'], layout_name, len(json_layout['layout']), layout_name, len(info_data['layouts'][layout_name]['layout']))
|
||||
else:
|
||||
for i, key in enumerate(info_data['layouts'][layout_name]['layout']):
|
||||
key.update(json_layout['layout'][i])
|
||||
|
||||
return info_data
|
||||
|
||||
|
||||
def find_info_json(keyboard):
|
||||
"""Finds all the info.json files associated with a keyboard.
|
||||
"""
|
||||
# Find the most specific first
|
||||
base_path = Path('keyboards')
|
||||
keyboard_path = base_path / keyboard
|
||||
keyboard_parent = keyboard_path.parent
|
||||
info_jsons = [keyboard_path / 'info.json']
|
||||
|
||||
# Add DEFAULT_FOLDER before parents, if present
|
||||
rules = rules_mk(keyboard)
|
||||
if 'DEFAULT_FOLDER' in rules:
|
||||
info_jsons.append(Path(rules['DEFAULT_FOLDER']) / 'info.json')
|
||||
|
||||
# Add in parent folders for least specific
|
||||
for _ in range(5):
|
||||
info_jsons.append(keyboard_parent / 'info.json')
|
||||
if keyboard_parent.parent == base_path:
|
||||
break
|
||||
keyboard_parent = keyboard_parent.parent
|
||||
|
||||
# Return a list of the info.json files that actually exist
|
||||
return [info_json for info_json in info_jsons if info_json.exists()]
|
||||
@ -0,0 +1,111 @@
|
||||
"""Functions that help us work with keyboards.
|
||||
"""
|
||||
from array import array
|
||||
from math import ceil
|
||||
from pathlib import Path
|
||||
|
||||
from qmk.c_parse import parse_config_h_file
|
||||
from qmk.makefile import parse_rules_mk_file
|
||||
|
||||
|
||||
def config_h(keyboard):
|
||||
"""Parses all the config.h files for a keyboard.
|
||||
|
||||
Args:
|
||||
keyboard: name of the keyboard
|
||||
|
||||
Returns:
|
||||
a dictionary representing the content of the entire config.h tree for a keyboard
|
||||
"""
|
||||
config = {}
|
||||
cur_dir = Path('keyboards')
|
||||
rules = rules_mk(keyboard)
|
||||
keyboard = Path(rules['DEFAULT_FOLDER'] if 'DEFAULT_FOLDER' in rules else keyboard)
|
||||
|
||||
for dir in keyboard.parts:
|
||||
cur_dir = cur_dir / dir
|
||||
config = {**config, **parse_config_h_file(cur_dir / 'config.h')}
|
||||
|
||||
return config
|
||||
|
||||
|
||||
def rules_mk(keyboard):
|
||||
"""Get a rules.mk for a keyboard
|
||||
|
||||
Args:
|
||||
keyboard: name of the keyboard
|
||||
|
||||
Returns:
|
||||
a dictionary representing the content of the entire rules.mk tree for a keyboard
|
||||
"""
|
||||
keyboard = Path(keyboard)
|
||||
cur_dir = Path('keyboards')
|
||||
rules = parse_rules_mk_file(cur_dir / keyboard / 'rules.mk')
|
||||
|
||||
if 'DEFAULT_FOLDER' in rules:
|
||||
keyboard = Path(rules['DEFAULT_FOLDER'])
|
||||
|
||||
for i, dir in enumerate(keyboard.parts):
|
||||
cur_dir = cur_dir / dir
|
||||
rules = parse_rules_mk_file(cur_dir / 'rules.mk', rules)
|
||||
|
||||
return rules
|
||||
|
||||
|
||||
def render_layout(layout_data, key_labels=None):
|
||||
"""Renders a single layout.
|
||||
"""
|
||||
textpad = [array('u', ' ' * 200) for x in range(50)]
|
||||
|
||||
for key in layout_data:
|
||||
x = ceil(key.get('x', 0) * 4)
|
||||
y = ceil(key.get('y', 0) * 3)
|
||||
w = ceil(key.get('w', 1) * 4)
|
||||
h = ceil(key.get('h', 1) * 3)
|
||||
|
||||
if key_labels:
|
||||
label = key_labels.pop(0)
|
||||
if label.startswith('KC_'):
|
||||
label = label[3:]
|
||||
else:
|
||||
label = key.get('label', '')
|
||||
|
||||
label_len = w - 2
|
||||
label_leftover = label_len - len(label)
|
||||
|
||||
if len(label) > label_len:
|
||||
label = label[:label_len]
|
||||
|
||||
label_blank = ' ' * label_len
|
||||
label_border = '─' * label_len
|
||||
label_middle = label + ' '*label_leftover # noqa: yapf insists there be no whitespace around *
|
||||
|
||||
top_line = array('u', '┌' + label_border + '┐')
|
||||
lab_line = array('u', '│' + label_middle + '│')
|
||||
mid_line = array('u', '│' + label_blank + '│')
|
||||
bot_line = array('u', '└' + label_border + "┘")
|
||||
|
||||
textpad[y][x:x + w] = top_line
|
||||
textpad[y + 1][x:x + w] = lab_line
|
||||
for i in range(h - 3):
|
||||
textpad[y + i + 2][x:x + w] = mid_line
|
||||
textpad[y + h - 1][x:x + w] = bot_line
|
||||
|
||||
lines = []
|
||||
for line in textpad:
|
||||
if line.tounicode().strip():
|
||||
lines.append(line.tounicode().rstrip())
|
||||
|
||||
return '\n'.join(lines)
|
||||
|
||||
|
||||
def render_layouts(info_json):
|
||||
"""Renders all the layouts from an `info_json` structure.
|
||||
"""
|
||||
layouts = {}
|
||||
|
||||
for layout in info_json['layouts']:
|
||||
layout_data = info_json['layouts'][layout]['layout']
|
||||
layouts[layout] = render_layout(layout_data)
|
||||
|
||||
return layouts
|
||||
@ -0,0 +1,33 @@
|
||||
"""Parse arbitrary math equations in a safe way.
|
||||
|
||||
Gratefully copied from https://stackoverflow.com/a/9558001
|
||||
"""
|
||||
import ast
|
||||
import operator as op
|
||||
|
||||
# supported operators
|
||||
operators = {ast.Add: op.add, ast.Sub: op.sub, ast.Mult: op.mul, ast.Div: op.truediv, ast.Pow: op.pow, ast.BitXor: op.xor, ast.USub: op.neg}
|
||||
|
||||
|
||||
def compute(expr):
|
||||
"""Parse a mathematical expression and return the answer.
|
||||
|
||||
>>> compute('2^6')
|
||||
4
|
||||
>>> compute('2**6')
|
||||
64
|
||||
>>> compute('1 + 2*3**(4^5) / (6 + -7)')
|
||||
-5.0
|
||||
"""
|
||||
return _eval(ast.parse(expr, mode='eval').body)
|
||||
|
||||
|
||||
def _eval(node):
|
||||
if isinstance(node, ast.Num): # <number>
|
||||
return node.n
|
||||
elif isinstance(node, ast.BinOp): # <left> <operator> <right>
|
||||
return operators[type(node.op)](_eval(node.left), _eval(node.right))
|
||||
elif isinstance(node, ast.UnaryOp): # <operator> <operand> e.g., -1
|
||||
return operators[type(node.op)](_eval(node.operand))
|
||||
else:
|
||||
raise TypeError(node)
|
||||
Loading…
Reference in New Issue