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from utils import to_snake_case, to_camel_case
from mappings import Mappings
import os
def burger_type_to_rust_type(burger_type):
is_var = False
uses = set()
if burger_type == 'byte':
field_type_rs = 'i8'
elif burger_type == 'short':
field_type_rs = 'i16'
elif burger_type == 'int':
field_type_rs = 'i32'
elif burger_type == 'long':
field_type_rs = 'i64'
elif burger_type == 'float':
field_type_rs = 'f32'
elif burger_type == 'double':
field_type_rs = 'f64'
elif burger_type == 'varint':
is_var = True
field_type_rs = 'i32'
elif burger_type == 'varlong':
is_var = True
field_type_rs = 'i64'
elif burger_type == 'boolean':
field_type_rs = 'bool'
elif burger_type == 'string':
field_type_rs = 'String'
elif burger_type == 'chatcomponent':
field_type_rs = 'Component'
uses.add('azalea_chat::component::Component')
elif burger_type == 'identifier':
field_type_rs = 'ResourceLocation'
uses.add('azalea_core::resource_location::ResourceLocation')
elif burger_type == 'uuid':
field_type_rs = 'Uuid'
uses.add('uuid::Uuid')
elif burger_type == 'position':
field_type_rs = 'BlockPos'
uses.add('azalea_core::BlockPos')
elif burger_type == 'nbtcompound':
field_type_rs = 'azalea_nbt::Tag'
elif burger_type == 'itemstack':
field_type_rs = 'Slot'
uses.add('azalea_core::Slot')
elif burger_type == 'metadata':
field_type_rs = 'EntityMetadata'
uses.add('crate::mc_buf::EntityMetadata')
elif burger_type == 'enum':
# enums are too complicated, leave those to the user
field_type_rs = 'todo!()'
elif burger_type.endswith('[]'):
field_type_rs, is_var, uses = burger_type_to_rust_type(
burger_type[:-2])
field_type_rs = f'Vec<{field_type_rs}>'
else:
print('Unknown field type:', burger_type)
exit()
return field_type_rs, is_var, uses
def write_packet_file(state, packet_name_snake_case, code):
with open(f'../azalea-protocol/src/packets/{state}/{packet_name_snake_case}.rs', 'w') as f:
f.write(code)
def generate(burger_packets, mappings: Mappings, target_packet_id, target_packet_direction, target_packet_state):
for packet in burger_packets.values():
if packet['id'] != target_packet_id:
continue
direction = packet['direction'].lower() # serverbound or clientbound
state = {'PLAY': 'game'}.get(packet['state'], packet['state'].lower())
if state != target_packet_state or direction != target_packet_direction:
continue
generated_packet_code = []
uses = set()
generated_packet_code.append(
f'#[derive(Clone, Debug, McBuf, {to_camel_case(state)}Packet)]')
uses.add(f'packet_macros::{{to_camel_case(state)}Packet, McBuf}')
obfuscated_class_name = packet['class'].split('.')[0].split('$')[0]
class_name = mappings.get_class(
obfuscated_class_name).split('.')[-1].split('$')[0]
generated_packet_code.append(
f'pub struct {to_camel_case(class_name)} {{')
for instruction in packet.get('instructions', []):
if instruction['operation'] == 'write':
obfuscated_field_name = instruction['field']
if '.' in obfuscated_field_name or ' ' in obfuscated_field_name or '(' in obfuscated_field_name:
generated_packet_code.append(f'// TODO: {instruction}')
continue
field_name = mappings.get_field(
obfuscated_class_name, obfuscated_field_name)
if not field_name:
generated_packet_code.append(
f'// TODO: unknown field {instruction}')
continue
field_type = instruction['type']
field_type_rs, is_var, instruction_uses = burger_type_to_rust_type(
field_type)
if is_var:
generated_packet_code.append('#[var]')
generated_packet_code.append(
f'pub {to_snake_case(field_name)}: {field_type_rs},')
uses.update(instruction_uses)
else:
generated_packet_code.append(f'// TODO: {instruction}')
continue
generated_packet_code.append('}')
if uses:
# empty line before the `use` statements
generated_packet_code.insert(0, '')
for use in uses:
generated_packet_code.insert(0, f'use {use};')
print(generated_packet_code)
write_packet_file(state, to_snake_case(class_name),
'\n'.join(generated_packet_code))
print()
mod_rs_dir = f'../azalea-protocol/src/packets/{state}/mod.rs'
with open(mod_rs_dir, 'r') as f:
mod_rs = f.read().splitlines()
pub_mod_line = f'pub mod {to_snake_case(class_name)};'
if pub_mod_line not in mod_rs:
mod_rs.insert(0, pub_mod_line)
packet_mod_rs_line = f' {hex(packet["id"])}: {to_snake_case(class_name)}::{to_camel_case(class_name)},'
in_serverbound = False
in_clientbound = False
for i, line in enumerate(mod_rs):
if line.strip() == 'Serverbound => {':
in_serverbound = True
continue
elif line.strip() == 'Clientbound => {':
in_clientbound = True
continue
elif line.strip() in ('}', '},'):
if (in_serverbound and direction == 'serverbound') or (in_clientbound and direction == 'clientbound'):
mod_rs.insert(i, packet_mod_rs_line)
break
in_serverbound = in_clientbound = False
continue
if line.strip() == '' or line.strip().startswith('//') or (not in_serverbound and direction == 'serverbound') or (not in_clientbound and direction == 'clientbound'):
continue
line_packet_id_hex = line.strip().split(':')[0]
assert line_packet_id_hex.startswith('0x')
line_packet_id = int(line_packet_id_hex[2:], 16)
if line_packet_id > packet['id']:
mod_rs.insert(i, packet_mod_rs_line)
break
with open(mod_rs_dir, 'w') as f:
f.write('\n'.join(mod_rs))
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