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Implementation and documentation for -labels-progress

This commit is contained in:
John Whitington 2020-01-25 16:58:41 +08:00
parent 08ca9bea6f
commit 232312faef
4 changed files with 14 additions and 8 deletions
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@ -1,6 +1,7 @@
Version 2.4 (to come)
o Vendored in tiny_json from Yoshihiro Imai via Jan Furuse
o New -labels-progress option to improve page labels interface
Version 2.3 (patchlevel 1, December 2019)

13
cpdf.ml
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@ -4174,6 +4174,10 @@ let page1 labels =
let add_page_labels pdf progress style prefix startval range =
let ranges = map extremes (ranges_of_range [] [] range)
and labels = Pdfpagelabels.read pdf in
assert (length ranges > 0);
let startval_additions =
0 :: map (fun x -> x - fst (List.hd ranges) - 1) (List.tl (List.map fst ranges))
in
let labels =
if not (page1 labels) then
ref
@ -4184,16 +4188,17 @@ let add_page_labels pdf progress style prefix startval range =
else
ref labels
in
iter
(function (s, e) ->
iter2
(fun (s, e) addition ->
let label =
{Pdfpagelabels.labelstyle = style;
Pdfpagelabels.labelprefix = prefix;
Pdfpagelabels.startpage = s;
Pdfpagelabels.startvalue = startval}
Pdfpagelabels.startvalue = startval + addition}
in
labels := Pdfpagelabels.add_label (Pdfpage.endpage pdf) !labels label e)
ranges;
ranges
startval_additions;
Pdfpagelabels.write pdf !labels
(* Parse the new content to make sure syntactically ok, append

BIN
cpdfmanual.pdf
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8
cpdfmanual.tex
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@ -34,7 +34,7 @@ Command Line Toolkit}
\vspace{12mm}
{\Huge User Manual}\\
Version 2.3 (October 2019)
Version 2.4 (? 2020)
\vspace{25mm}
@ -58,7 +58,7 @@ Version 2.3 (October 2019)
\noindent For bug reports, feature requests and comments, email\\ \texttt{contact@coherentgraphics.co.uk}
\vspace*{\fill}
\noindent\copyright 2019 Coherent Graphics Limited. All rights reserved. ISBN 978-0957671140
\noindent\copyright 2020 Coherent Graphics Limited. All rights reserved. ISBN 978-0957671140
\smallgap
\noindent Adobe, Acrobat, Adobe PDF, Adobe Reader and PostScript are
@ -1828,7 +1828,7 @@ given page range.
\vspace{1.5mm}
\small\noindent\verb!cpdf -add-page-labels in.pdf -o out.pdf!\\
\noindent\verb! [-label-style <style>] [-label-prefix <string>]!\\
\noindent\verb! [-label-startval <integer>]!\\
\noindent\verb! [-label-startval <integer>] [-labels-progress]!\\
\vspace{1.5mm}
\small\noindent\verb!cpdf -remove-page-labels in.pdf -o out.pdf!\\
@ -2105,7 +2105,7 @@ i, ii, iii, iv, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, A-0, A-1, A-2, A-3, A-4, A-5
\noindent\verb! -label-startval 0 -o out.pdf!
\end{framed}}
\noindent By default the labels begin at page number 1 for each range. To override this, we can use \texttt{-label-startval} (we used $0$ in the final command), where we want the numbers to begin at zero rather than one.
\noindent By default the labels begin at page number 1 for each range. To override this, we can use \texttt{-label-startval} (we used $0$ in the final command), where we want the numbers to begin at zero rather than one. The option \texttt{-labels-progress} can be added to make sure the start value progresses between sub-ranges when the page range specified is disjoint, e.g \texttt{1-9, 30-40} or \texttt{odd}.
Page labels may be removed altogether by using \texttt{-remove-page-labels} command. To print the page labels from an existing file, use \texttt{-print-page-labels}. For example:
\begin{framed}\small\begin{verbatim}$ cpdf -print-page-labels cpdfmanual.pdf