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dfa43beb9f
- Create PDF detects BigTIFF (II+/MM+) as well as classic TIFF; the tiff decoder already reads it, so these scans now convert instead of being refused. - Image detection accepts only GIF87a/GIF89a, the headers conversion decodes, so a malformed GIF header is no longer called an image and then rejected with a misleading error. - file-format-parity.md: XDP split into XFA data import/export (shipped under form.xfa-data) and opening .xdp as a document (none). Tests: bigtiff_images_become_pages; malformed GIF headers in source_kind_tells_pdfs_images_and_text_apart. Both fail without the fix. Claude-Session: https://claude.ai/code/session_01F8DFYWkDyTnEcin9PNkUW5 Co-authored-by: Claude <[email protected]> Co-authored-by: Brandon Thomas <[email protected]>
pdfcraft-create
Layer L4. Create a PDF (Acrobat's Create a PDF tool), execution plan M10.2:
blank(width, height, pages): an empty document;from_images(&[(name, bytes)]): one page per image, sized from the image's resolution (PNGpHYs, JPEG JFIF density; 72 dpi when absent). JPEG data is embedded as is (/DCTDecode, grey, RGB or Adobe-inverted CMYK); PNG is decoded and stored with Flate, with transparency as a soft mask. An ICC profile in the file (JPEGAPP2 ICC_PROFILE, PNGiCCP) that matches the image's colour space is kept as an/ICCBasedcolour space with the device space as/Alternate; images with the same profile share one profile object. JPEG metadata scanning skips marker fill bytes and reads application segments after the frame header, stopping at the first scan or end marker. Broken or mismatched ICC profiles still fall back to the device colour space;from_images_with_resolution(images, ImageResolution::Dpi(dpi)): override the page resolution (1–1200 dpi), without resampling or recompressing image pixels. Use 72 dpi for one point per pixel, orImageResolution::Embeddedfor the same behavior asfrom_images. The largest page side is still capped at 14,400 points;from_text(text, …): plain text set in Helvetica, wrapped and paginated. Text Helvetica can't draw is refused, naming the line and the character, never set as?.from_text_escaped(text, …): the same for reports PdfCraft generates from documents (comment summaries, compare reports): such characters are written as[U+XXXX]and the first line says so (ESCAPED_NOTE).
Every function returns a pdfcraft_cos::Document; the caller writes it.