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#!/usr/bin/env python3
"""
Embed asset files (images, sounds, fonts, etc.) into a C header file.
Usage: python embed_assets.py <output.h> <file1.png> [file2.wav] [file3.ttf] ...
Embeds all specified asset files into a C header for inclusion in the executable.
"""
import sys
import os
def sanitize_name(filename):
"""Convert filename to valid C identifier"""
name = os.path.basename(filename)
# Remove or replace all non-alphanumeric characters (except underscore)
valid_chars = []
for char in name:
if char.isalnum() or char == '_':
valid_chars.append(char)
else:
valid_chars.append('_')
name = ''.join(valid_chars)
# Ensure it doesn't start with a digit
if name and name[0].isdigit():
name = '_' + name
return name
def get_file_extension(filename):
"""Get the file extension"""
return os.path.splitext(filename)[1].lower()
def embed_files(output_file, input_files):
with open(output_file, 'w') as f:
f.write('#ifndef EMBEDDED_ASSETS_H\n')
f.write('#define EMBEDDED_ASSETS_H\n\n')
f.write('/* Auto-generated file - do not edit manually */\n\n')
# Embed each file as a separate array
for idx, input_file in enumerate(input_files):
with open(input_file, 'rb') as inf:
data = inf.read()
var_name = sanitize_name(input_file)
# Extract relative path from 'assets/' onwards if present
if 'assets' in input_file.replace('\\', '/'):
parts = input_file.replace('\\', '/').split('assets/')
if len(parts) > 1:
relative_name = 'assets/' + parts[-1]
else:
relative_name = os.path.basename(input_file)
else:
relative_name = os.path.basename(input_file)
f.write(f'/* Embedded asset: {input_file} ({len(data)} bytes) */\n')
f.write(f'static const unsigned char embedded_asset_{idx}_{var_name}[] = {{\n')
for i, byte in enumerate(data):
if i % 12 == 0:
f.write(' ')
f.write(f'0x{byte:02x}')
if i < len(data) - 1:
f.write(',')
if (i + 1) % 12 == 0:
f.write('\n')
else:
f.write(' ')
f.write('\n};\n')
f.write(f'static const unsigned int embedded_asset_{idx}_{var_name}_len = {len(data)};\n\n')
# Create the asset table
f.write('/* Asset table for virtual filesystem */\n')
f.write('typedef struct {\n')
f.write(' const char* name;\n')
f.write(' const unsigned char* data;\n')
f.write(' unsigned int size;\n')
f.write('} EmbeddedAsset;\n\n')
f.write('static const EmbeddedAsset embedded_assets[] = {\n')
for idx, input_file in enumerate(input_files):
var_name = sanitize_name(input_file)
# Extract relative path from 'assets/' onwards if present
if 'assets' in input_file.replace('\\', '/'):
parts = input_file.replace('\\', '/').split('assets/')
if len(parts) > 1:
relative_name = 'assets/' + parts[-1]
else:
relative_name = os.path.basename(input_file)
else:
relative_name = os.path.basename(input_file)
f.write(f' {{ "{relative_name}", embedded_asset_{idx}_{var_name}, embedded_asset_{idx}_{var_name}_len }},\n')
f.write('};\n\n')
f.write(f'static const int embedded_asset_count = {len(input_files)};\n\n')
f.write('#endif /* EMBEDDED_ASSETS_H */\n')
if __name__ == '__main__':
if len(sys.argv) < 3:
print('Usage: python embed_assets.py <output.h> <asset1> [asset2] ...')
print(' Embeds images, sounds, fonts, and other asset files into a C header.')
print(' Supported: .png, .jpg, .wav, .ogg, .mp3, .ttf, .otf, etc.')
sys.exit(1)
output_file = sys.argv[1]
input_files = sys.argv[2:]
# Check all input files exist
for f in input_files:
if not os.path.exists(f):
print(f'Error: File not found: {f}')
sys.exit(1)
embed_files(output_file, input_files)
print(f'Embedded {len(input_files)} asset file(s) into {output_file}')
for f in input_files:
size = os.path.getsize(f)
print(f' - {f} ({size} bytes)')
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