3ff4d1828f
Created comprehensive glyph selection document for unmapped glyph test fixture. Selected 4 unmapped glyph examples: - PUA glyphs: /g001, /g002, /g003 - Custom encoding: /CustomA, /CustomB - Orphaned codes: /NotAGlyph - Non-AGL algorithmic: /glyph_0041 Selected 4 mapped AGL glyphs for comparison: - /A, /B, /space (direct AGL entries) - /uni0041 (algorithmic pattern) Explained why each unmapped glyph fails all 4 mapping levels and provided recommended fixture structure with expected output. Closes bf-68f9i
87 lines
2.9 KiB
Rust
87 lines
2.9 KiB
Rust
//! Generate unmapped-glyphs.pdf test fixture
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//!
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//! Creates a PDF with custom glyph names that are not in the Adobe Glyph List
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//! and have no ToUnicode mapping, triggering GLYPH_UNMAPPED diagnostics.
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use std::fs::File;
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use std::io::Write;
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fn main() -> Result<(), Box<dyn std::error::Error>> {
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println!("Generating unmapped-glyphs.pdf...");
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let objects = vec![
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// Catalog
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b"1 0 obj\n<<\n/Type /Catalog\n/Pages 2 0 R\n>>\nendobj".to_vec(),
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// Pages
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b"2 0 obj\n<<\n/Type /Pages\n/Kids [3 0 R]\n/Count 1\n>>\nendobj".to_vec(),
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// Page
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b"3 0 obj\n<<\n/Type /Page\n/Parent 2 0 R\n/MediaBox [0 0 612 792]\n/Resources <<\n/Font <<\n/F1 5 0 R\n>>\n>>\n/Contents 4 0 R\n>>\nendobj".to_vec(),
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// Content stream: <00010203> Tj (byte codes 0-3 for 4 unmapped glyphs)
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b"4 0 obj\n<<\n/Length 44\n>>\nstream\nBT\n/F1 12 Tf\n50 700 Td\n<00010203> Tj\nET\nendstream\nendobj".to_vec(),
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// Font with custom encoding
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// Uses 4 distinct custom glyph names not in AGL:
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// /CustomAlpha, /CustomBeta, /CustomGamma, /CustomDelta
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b"5 0 obj\n<<\n/Type /Font\n/Subtype /Type1\n/BaseFont /UnmappedGlyphs\n/Encoding <<\n/Type /Encoding\n/Differences [0 /CustomAlpha /CustomBeta /CustomGamma /CustomDelta]\n>>\n>>\nendobj".to_vec(),
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];
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let pdf = build_pdf(objects);
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let mut file = File::create("tests/fixtures/encoding/unmapped-glyphs.pdf")?;
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file.write_all(&pdf)?;
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// Create expected output file (4 U+FFFD replacement characters)
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let mut txt_file = File::create("tests/fixtures/encoding/unmapped-glyphs.txt")?;
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txt_file.write_all("\u{FFFD}\u{FFFD}\u{FFFD}\u{FFFD}".as_bytes())?;
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println!("✓ unmapped-glyphs.pdf created successfully!");
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println!(" -> Contains 4 unmapped glyphs: /CustomAlpha, /CustomBeta, /CustomGamma, /CustomDelta");
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println!(" -> Expected output: <U+FFFD><U+FFFD><U+FFFD><U+FFFD>");
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Ok(())
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}
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/// Build a complete PDF with proper xref table and trailer
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fn build_pdf(objects: Vec<Vec<u8>>) -> Vec<u8> {
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let mut pdf = b"%PDF-1.4\n".to_vec();
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// Track object offsets
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let mut offsets = Vec::new();
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for obj in &objects {
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offsets.push(pdf.len());
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pdf.extend(obj);
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pdf.extend(b"\n");
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}
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let xref_start = pdf.len();
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// Build xref table
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pdf.extend(b"xref\n");
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pdf.extend(format!("0 {}\n", objects.len() + 1).as_bytes());
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pdf.extend(b"0000000000 65535 f \n");
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for offset in offsets {
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pdf.extend(format!("{:010} 00000 n \n", offset).as_bytes());
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}
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// Build trailer
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pdf.extend(b"trailer\n");
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pdf.extend(b"<<\n");
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pdf.extend(b"/Size ");
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pdf.extend(format!("{}", objects.len() + 1).as_bytes());
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pdf.extend(b"\n");
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pdf.extend(b"/Root 1 0 R\n");
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pdf.extend(b">>\n");
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// Start of xref
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pdf.extend(b"startxref\n");
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pdf.extend(format!("{}\n", xref_start).as_bytes());
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// EOF marker
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pdf.extend(b"%%EOF\n");
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pdf
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}
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