62 lines
2.2 KiB
OCaml
62 lines
2.2 KiB
OCaml
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open Pdfutil
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(* Output information for each page *)
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let output_page_info pdf range =
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let pages = Pdfpage.pages_of_pagetree pdf
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and labels = Pdfpagelabels.read pdf in
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let getbox page box =
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if box = "/MediaBox" then
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match page.Pdfpage.mediabox with
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| Pdf.Array [a; b; c; d] ->
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Printf.sprintf "%f %f %f %f"
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(Pdf.getnum a) (Pdf.getnum b) (Pdf.getnum c) (Pdf.getnum d)
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| _ -> ""
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else
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match Pdf.lookup_direct pdf box page.Pdfpage.rest with
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| Some (Pdf.Array [a; b; c; d]) ->
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Printf.sprintf "%f %f %f %f"
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(Pdf.getnum a) (Pdf.getnum b) (Pdf.getnum c) (Pdf.getnum d)
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| _ -> ""
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and rotation page =
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Pdfpage.int_of_rotation page.Pdfpage.rotate
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in
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iter
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(fun pnum ->
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let page = select pnum pages in
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Printf.printf "Page %i:\n" pnum;
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Printf.printf "Label: %s\n"
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(try Pdfpagelabels.pagelabeltext_of_pagenumber pnum labels with Not_found -> "");
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Printf.printf "MediaBox: %s\n" (getbox page "/MediaBox");
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Printf.printf "CropBox: %s\n" (getbox page "/CropBox");
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Printf.printf "BleedBox: %s\n" (getbox page "/BleedBox");
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Printf.printf "TrimBox: %s\n" (getbox page "/TrimBox");
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Printf.printf "ArtBox: %s\n" (getbox page "/ArtBox");
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Printf.printf "Rotation: %i\n" (rotation page))
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range
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let process_pages f pdf range =
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let pages = Pdfpage.pages_of_pagetree pdf in
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let pages', pagenumbers, matrices = (* new page objects, page number, matrix *)
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split3
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(map2
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(fun n p -> if mem n range then f n p else (p, n, Pdftransform.i_matrix))
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(ilist 1 (length pages))
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pages)
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in
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Pdfpage.change_pages ~matrices:(combine pagenumbers matrices) true pdf pages'
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let iter_pages f pdf range =
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let pages = Pdfpage.pages_of_pagetree pdf in
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iter2
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(fun n p -> if mem n range then f n p)
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(ilist 1 (length pages))
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pages
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let map_pages f pdf range =
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let pages = Pdfpage.pages_of_pagetree pdf in
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option_map2
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(fun n p -> if mem n range then Some (f n p) else None)
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(ilist 1 (length pages))
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pages
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