First commit with working display

managed_components/lvgl__lvgl/docs/config_builder.py

@@ -0,0 +1,76 @@
+"""
+Create lv_conf.h in same directory as this file
+from ../lv_conf_template.h that has:
+
+1.  all its #define LV_USE... 0-or-1 options set to 1
+     (except for LV_USER_PROFILER),
+2.  all its #define LV_FONT... 0-or-1 options set to 1,
+3.  its #if 0 directive set to #if 1.
+"""
+import os
+import sys
+import re
+
+base_path = os.path.dirname(__file__)
+dest_config = os.path.join(base_path, 'lv_conf.h')
+src_config = os.path.abspath(os.path.join(
+    base_path,
+    '..',
+    'lv_conf_template.h'
+))
+disabled_option_re = re.compile(r'^\s*#define\s+(LV_(?:USE|FONT)_\w+)\s+(\b0\b)')
+
+leave_disabled_list = [
+    'LV_USE_PROFILER',
+    'LV_USE_DRAW_ARM2D_SYNC',
+    'LV_USE_NATIVE_HELIUM_ASM',
+]
+
+
+def run(output_cfg_path=None):
+    global dest_config
+    enable_content_macro_processed = False
+    os.chdir(base_path)
+
+    if output_cfg_path is not None:
+        dest_config = output_cfg_path
+
+    with open(src_config, 'r') as f:
+        data = f.read()
+
+    lines = data.split('\n')
+
+    for i, line in enumerate(lines):
+        if not enable_content_macro_processed:
+            if line.startswith('#if 0'):
+                line = line.replace('#if 0', '#if 1')
+                lines[i] = line
+                enable_content_macro_processed = True
+        else:
+            match = disabled_option_re.search(line)
+            if match:
+                # Except for these...
+                if match[1] in leave_disabled_list:
+                    continue
+                else:
+                    # ...replace '0' with '1' without altering any other part of line.
+                    # Set `j` to index where '0' was found.
+                    j = match.regs[2][0]
+                    # Surgically insert '1' in place of '0'.  Strings are immutable.
+                    line = line[:j] + '1' + line[j + 1:]
+                    lines[i] = line
+
+    data = '\n'.join(lines)
+
+    with open(dest_config, 'w') as f:
+        f.write(data)
+
+
+def cleanup():
+    if os.path.exists(dest_config):
+        os.remove(dest_config)
+
+
+if __name__ == '__main__':
+    """Make module importable as well as run-able."""
+    run()