188 lines
8.0 KiB
Rust
188 lines
8.0 KiB
Rust
use std::fmt::Write;
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use std::io::Cursor;
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use num_traits::FromPrimitive;
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use crate::framework::error::GameError::InvalidValue;
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use crate::framework::error::GameResult;
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use crate::game::scripting::tsc::bytecode_utils::read_cur_varint;
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use crate::game::scripting::tsc::opcodes::TSCOpCode;
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use crate::game::scripting::tsc::text_script::TextScript;
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impl TextScript {
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pub fn decompile_event(&self, id: u16) -> GameResult<String> {
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if let Some(bytecode) = self.event_map.get(&id) {
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let mut result = String::new();
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let mut cursor: Cursor<&[u8]> = Cursor::new(bytecode);
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while let Ok(op_num) = read_cur_varint(&mut cursor) {
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let op_maybe: Option<TSCOpCode> = FromPrimitive::from_i32(op_num);
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if let Some(op) = op_maybe {
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match op {
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// Zero operand codes
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TSCOpCode::AEp
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| TSCOpCode::CAT
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| TSCOpCode::CIL
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| TSCOpCode::CLO
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| TSCOpCode::CLR
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| TSCOpCode::CPS
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| TSCOpCode::CRE
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| TSCOpCode::CSS
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| TSCOpCode::END
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| TSCOpCode::ESC
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| TSCOpCode::FLA
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| TSCOpCode::FMU
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| TSCOpCode::FRE
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| TSCOpCode::HMC
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| TSCOpCode::INI
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| TSCOpCode::KEY
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| TSCOpCode::LDP
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| TSCOpCode::MLP
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| TSCOpCode::MM0
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| TSCOpCode::MNA
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| TSCOpCode::MS2
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| TSCOpCode::MS3
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| TSCOpCode::MSG
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| TSCOpCode::NOD
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| TSCOpCode::PRI
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| TSCOpCode::RMU
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| TSCOpCode::SAT
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| TSCOpCode::SLP
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| TSCOpCode::SMC
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| TSCOpCode::SPS
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| TSCOpCode::STC
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| TSCOpCode::SVP
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| TSCOpCode::TUR
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| TSCOpCode::WAS
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| TSCOpCode::ZAM
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| TSCOpCode::HM2
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| TSCOpCode::POP
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| TSCOpCode::KE2
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| TSCOpCode::FR2 => {
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writeln!(&mut result, "{:?}()", op).unwrap();
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}
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// One operand codes
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TSCOpCode::BOA
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| TSCOpCode::BSL
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| TSCOpCode::FOM
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| TSCOpCode::QUA
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| TSCOpCode::UNI
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| TSCOpCode::MYB
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| TSCOpCode::MYD
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| TSCOpCode::FAI
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| TSCOpCode::FAO
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| TSCOpCode::WAI
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| TSCOpCode::FAC
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| TSCOpCode::GIT
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| TSCOpCode::NUM
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| TSCOpCode::DNA
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| TSCOpCode::DNP
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| TSCOpCode::FLm
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| TSCOpCode::FLp
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| TSCOpCode::MPp
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| TSCOpCode::SKm
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| TSCOpCode::SKp
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| TSCOpCode::EQp
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| TSCOpCode::EQm
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| TSCOpCode::MLp
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| TSCOpCode::ITp
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| TSCOpCode::ITm
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| TSCOpCode::AMm
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| TSCOpCode::UNJ
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| TSCOpCode::MPJ
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| TSCOpCode::YNJ
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| TSCOpCode::EVE
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| TSCOpCode::XX1
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| TSCOpCode::SIL
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| TSCOpCode::LIp
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| TSCOpCode::SOU
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| TSCOpCode::CMU
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| TSCOpCode::SSS
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| TSCOpCode::ACH
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| TSCOpCode::S2MV
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| TSCOpCode::S2PJ
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| TSCOpCode::PSH => {
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let par_a = read_cur_varint(&mut cursor)?;
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writeln!(&mut result, "{:?}({})", op, par_a).unwrap();
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}
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// Two operand codes
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TSCOpCode::FON
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| TSCOpCode::FOB
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| TSCOpCode::MOV
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| TSCOpCode::AMp
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| TSCOpCode::NCJ
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| TSCOpCode::ECJ
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| TSCOpCode::FLJ
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| TSCOpCode::ITJ
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| TSCOpCode::SKJ
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| TSCOpCode::AMJ
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| TSCOpCode::SMP
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| TSCOpCode::PSp
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| TSCOpCode::IpN
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| TSCOpCode::FFm => {
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let par_a = read_cur_varint(&mut cursor)?;
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let par_b = read_cur_varint(&mut cursor)?;
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writeln!(&mut result, "{:?}({}, {})", op, par_a, par_b).unwrap();
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}
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// Three operand codes
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TSCOpCode::ANP | TSCOpCode::CNP | TSCOpCode::INP | TSCOpCode::TAM | TSCOpCode::CMP | TSCOpCode::INJ => {
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let par_a = read_cur_varint(&mut cursor)?;
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let par_b = read_cur_varint(&mut cursor)?;
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let par_c = read_cur_varint(&mut cursor)?;
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writeln!(&mut result, "{:?}({}, {}, {})", op, par_a, par_b, par_c).unwrap();
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}
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// Four operand codes
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TSCOpCode::TRA | TSCOpCode::MNP | TSCOpCode::SNP => {
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let par_a = read_cur_varint(&mut cursor)?;
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let par_b = read_cur_varint(&mut cursor)?;
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let par_c = read_cur_varint(&mut cursor)?;
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let par_d = read_cur_varint(&mut cursor)?;
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writeln!(&mut result, "{:?}({}, {}, {}, {})", op, par_a, par_b, par_c, par_d).unwrap();
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}
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TSCOpCode::_STR => {
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let len = read_cur_varint(&mut cursor)?;
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write!(&mut result, "%string(len = {}, value = \"", len).unwrap();
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for _ in 0..len {
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let chr = std::char::from_u32(read_cur_varint(&mut cursor)? as u32).unwrap_or('?');
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match chr {
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'\n' => {
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result.push_str("\\n");
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}
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'\r' => {
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result.push_str("\\r");
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}
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'\t' => {
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result.push_str("\\t");
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}
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'\u{0000}'..='\u{001f}' | '\u{0080}'..='\u{ffff}' => {
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result.push_str(&chr.escape_unicode().to_string());
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}
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_ => {
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result.push(chr);
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}
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}
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}
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result.push_str("\")\n");
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}
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TSCOpCode::_NOP => result.push_str("%no_op()\n"),
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TSCOpCode::_UNI => result.push_str("%unimplemented()\n"),
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TSCOpCode::_END => result.push_str("%end_marker()\n"),
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}
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} else {
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break;
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}
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}
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Ok(result)
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} else {
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Err(InvalidValue("Unknown script.".to_string()))
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}
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}
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}
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