1 files changed, 249 insertions, 0 deletions
diff --git a/lib/python/qmk/info.py b/lib/python/qmk/info.py
new file mode 100644
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+++ b/lib/python/qmk/info.py
@@ -0,0 +1,249 @@
+"""Functions that help us generate and use info.json files.
+"""
+import json
+from glob import glob
+from pathlib import Path
+
+from milc import cli
+
+from qmk.constants import ARM_PROCESSORS, AVR_PROCESSORS, VUSB_PROCESSORS
+from qmk.c_parse import find_layouts
+from qmk.keyboard import config_h, rules_mk
+from qmk.math import compute
+
+
+def info_json(keyboard):
+    """Generate the info.json data for a specific keyboard.
+    """
+    info_data = {
+        'keyboard_name': str(keyboard),
+        'keyboard_folder': str(keyboard),
+        'layouts': {},
+        'maintainer': 'qmk',
+    }
+
+    for layout_name, layout_json in _find_all_layouts(keyboard).items():
+        if not layout_name.startswith('LAYOUT_kc'):
+            info_data['layouts'][layout_name] = layout_json
+
+    info_data = merge_info_jsons(keyboard, info_data)
+    info_data = _extract_config_h(info_data)
+    info_data = _extract_rules_mk(info_data)
+
+    return info_data
+
+
+def _extract_config_h(info_data):
+    """Pull some keyboard information from existing rules.mk files
+    """
+    config_c = config_h(info_data['keyboard_folder'])
+    row_pins = config_c.get('MATRIX_ROW_PINS', '').replace('{', '').replace('}', '').strip()
+    col_pins = config_c.get('MATRIX_COL_PINS', '').replace('{', '').replace('}', '').strip()
+    direct_pins = config_c.get('DIRECT_PINS', '').replace(' ', '')[1:-1]
+
+    info_data['diode_direction'] = config_c.get('DIODE_DIRECTION')
+    info_data['matrix_size'] = {
+        'rows': compute(config_c.get('MATRIX_ROWS', '0')),
+        'cols': compute(config_c.get('MATRIX_COLS', '0')),
+    }
+    info_data['matrix_pins'] = {}
+
+    if row_pins:
+        info_data['matrix_pins']['rows'] = row_pins.split(',')
+    if col_pins:
+        info_data['matrix_pins']['cols'] = col_pins.split(',')
+
+    if direct_pins:
+        direct_pin_array = []
+        for row in direct_pins.split('},{'):
+            if row.startswith('{'):
+                row = row[1:]
+            if row.endswith('}'):
+                row = row[:-1]
+
+            direct_pin_array.append([])
+
+            for pin in row.split(','):
+                if pin == 'NO_PIN':
+                    pin = None
+
+                direct_pin_array[-1].append(pin)
+
+        info_data['matrix_pins']['direct'] = direct_pin_array
+
+    info_data['usb'] = {
+        'vid': config_c.get('VENDOR_ID'),
+        'pid': config_c.get('PRODUCT_ID'),
+        'device_ver': config_c.get('DEVICE_VER'),
+        'manufacturer': config_c.get('MANUFACTURER'),
+        'product': config_c.get('PRODUCT'),
+        'description': config_c.get('DESCRIPTION'),
+    }
+
+    return info_data
+
+
+def _extract_rules_mk(info_data):
+    """Pull some keyboard information from existing rules.mk files
+    """
+    rules = rules_mk(info_data['keyboard_folder'])
+    mcu = rules.get('MCU')
+
+    if mcu in ARM_PROCESSORS:
+        arm_processor_rules(info_data, rules)
+    elif mcu in AVR_PROCESSORS:
+        avr_processor_rules(info_data, rules)
+    else:
+        cli.log.warning("%s: Unknown MCU: %s" % (info_data['keyboard_folder'], mcu))
+        unknown_processor_rules(info_data, rules)
+
+    return info_data
+
+
+def _find_all_layouts(keyboard):
+    """Looks for layout macros associated with this keyboard.
+    """
+    layouts = {}
+    rules = rules_mk(keyboard)
+    keyboard_path = Path(rules.get('DEFAULT_FOLDER', keyboard))
+
+    # Pull in all layouts defined in the standard files
+    current_path = Path('keyboards/')
+    for directory in keyboard_path.parts:
+        current_path = current_path / directory
+        keyboard_h = '%s.h' % (directory,)
+        keyboard_h_path = current_path / keyboard_h
+        if keyboard_h_path.exists():
+            layouts.update(find_layouts(keyboard_h_path))
+
+    if not layouts:
+        # 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()]