63 lines
2.8 KiB
Rust
63 lines
2.8 KiB
Rust
//! Quick debug test for failing stream decoder fixtures.
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use pdftract_core::parser::stream::{
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FlateDecoder, LZWDecoder, ASCII85Decoder, normalize_filter_name, StreamDecoder,
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};
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use pdftract_core::parser::object::{PdfObject, PdfDict};
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use indexmap::IndexMap;
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#[test]
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fn test_decoder_debug() {
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// Test LZW decoder
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println!("Testing LZW decoder...");
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let lzw_input = std::fs::read("tests/stream_decoder/fixtures/lzw_early_change_0.bin").unwrap();
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println!("LZW input: {:02x?}", lzw_input);
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let mut counter = 0u64;
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let mut params = IndexMap::new();
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params.insert("/EarlyChange".into(), PdfObject::Integer(0));
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let params_obj = PdfObject::Dict(Box::new(params));
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let result = LZWDecoder.decode(&lzw_input, Some(¶ms_obj), &mut counter, pdftract_core::parser::stream::DEFAULT_MAX_DECOMPRESS_BYTES);
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match &result {
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Ok(data) => println!("LZW output: {:02x?}", data),
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Err(e) => println!("LZW error: {}", e),
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}
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// Test ASCII85 decoder
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println!("\nTesting ASCII85 decoder...");
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let a85_input = std::fs::read("tests/stream_decoder/fixtures/filter_array_a85_then_flate.bin").unwrap();
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println!("ASCII85 input (first 50 bytes): {:02x?}", &a85_input[..a85_input.len().min(50)]);
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let mut counter = 0u64;
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let result = ASCII85Decoder.decode(&a85_input, None, &mut counter, pdftract_core::parser::stream::DEFAULT_MAX_DECOMPRESS_BYTES);
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match &result {
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Ok(data) => {
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println!("ASCII85 decoded (first 50 bytes): {:02x?}", &data[..data.len().min(50)]);
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println!("ASCII85 decoded as string: {:?}", String::from_utf8_lossy(data));
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}
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Err(e) => println!("ASCII85 error: {}", e),
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}
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// Test Flate decoder with PNG predictor
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println!("\nTesting Flate decoder with PNG predictor...");
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let flate_input = std::fs::read("tests/stream_decoder/fixtures/flate_png_pred15_all_six.bin").unwrap();
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println!("Flate input (first 50 bytes): {:02x?}", &flate_input[..flate_input.len().min(50)]);
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let mut counter = 0u64;
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let mut params = IndexMap::new();
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params.insert("/Predictor".into(), PdfObject::Integer(15));
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params.insert("/Columns".into(), PdfObject::Integer(8));
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params.insert("/Colors".into(), PdfObject::Integer(1));
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params.insert("/BitsPerComponent".into(), PdfObject::Integer(8));
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let params_obj = PdfObject::Dict(Box::new(params));
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let result = FlateDecoder.decode(&flate_input, Some(¶ms_obj), &mut counter, pdftract_core::parser::stream::DEFAULT_MAX_DECOMPRESS_BYTES);
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match &result {
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Ok(data) => {
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println!("Flate output (first 50 bytes): {:02x?}", &data[..data.len().min(50)]);
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println!("Flate output as string: {:?}", String::from_utf8_lossy(data));
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}
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Err(e) => println!("Flate error: {}", e),
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}
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}
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