2023-04-07 06:09:44 +10:00
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use std::{
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fs,
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2023-04-07 06:54:26 +10:00
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io::{BufWriter, Write},
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2023-04-07 06:09:44 +10:00
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path::PathBuf,
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};
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fn main() -> Result<(), Box<dyn std::error::Error>> {
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let path = PathBuf::from("tests/text_render");
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let file_data = fs::read(path)?;
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let file_data = file_data.as_slice();
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let elf_file = elf::ElfBytes::<elf::endian::AnyEndian>::minimal_parse(file_data)?;
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2023-04-07 06:54:26 +10:00
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let section_headers = elf_file
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.section_headers()
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.expect("Expected section headers");
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2023-04-07 06:09:44 +10:00
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2023-04-07 06:54:26 +10:00
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let mut output = BufWriter::new(fs::File::create("out.gba")?);
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2023-04-07 06:09:44 +10:00
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2023-04-07 06:54:26 +10:00
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let mut header = gbafix::GBAHeader::default();
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2023-04-07 06:09:44 +10:00
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2023-04-07 06:54:26 +10:00
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let mut written_header = false;
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for section_header in section_headers.iter() {
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2023-04-07 06:09:44 +10:00
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const SHT_NOBITS: u32 = 8;
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const SHT_NULL: u32 = 0;
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const SHF_ALLOC: u64 = 2;
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if (section_header.sh_type == SHT_NOBITS || section_header.sh_type == SHT_NULL)
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|| section_header.sh_flags & SHF_ALLOC == 0
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{
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continue;
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}
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2023-04-07 06:54:26 +10:00
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let (mut data, compression) = elf_file.section_data(§ion_header)?;
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2023-04-07 06:09:44 +10:00
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if let Some(compression) = compression {
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2023-04-07 06:10:03 +10:00
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panic!("Cannot decompress elf content, but got compression header {compression:?}");
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2023-04-07 06:09:44 +10:00
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}
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2023-04-07 06:54:26 +10:00
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if !written_header {
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assert!(
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data.len() > 192,
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"first section must be at least as big as the gba header"
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);
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header.start_code = data[0..4].try_into().unwrap();
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header.update_checksum();
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let header_bytes = bytemuck::bytes_of(&header);
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output.write_all(header_bytes)?;
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data = &data[192..];
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written_header = true;
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}
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output.write_all(data)?;
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2023-04-07 06:09:44 +10:00
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}
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2023-04-07 06:54:26 +10:00
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output.flush()?;
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2023-04-07 06:09:44 +10:00
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Ok(())
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}
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