/
hyperref-generic.dtx
3772 lines (3678 loc) · 111 KB
/
hyperref-generic.dtx
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% \iffalse meta-comment
%
%% File: hyperref-generic.dtx
%
% Copyright (C) 2020 The LaTeX3 Project
%
% It may be distributed and/or modified under the conditions of the
% LaTeX Project Public License (LPPL), either version 1.3c of this
% license or (at your option) any later version. The latest version
% of this license is in the file
%
% http://www.latex-project.org/lppl.txt
%
% This file is part of the "pdfresources bundle" (The Work in LPPL)
% and all files in that bundle must be distributed together.
%
% The released version of this bundle is available from CTAN.
%
% -----------------------------------------------------------------------
%
% The development version of the bundle can be found at
%
% https://github.com/latex3/pdfresources
%
% for those people who are interested.
%
%<*driver>
\documentclass[full]{l3doc}
\begin{document}
\DocInput{\jobname.dtx}
\end{document}
%</driver>
% \fi
% \title{^^A
% The \pkg{hyperref-generic} package \\ A generic driver for hyperref ^^A
% }
%
% \author{^^A
% The \LaTeX3 Project\thanks
% {^^A
% E-mail:
% \href{mailto:latex-team@latex-project.org}
% {latex-team@latex-project.org}^^A
% }^^A
% }
%
% \date{Released XXXX-XX-XX}
%
% \maketitle
% This package generates a generic driver for \pkg{hyperref} meant to be used
% with the new LaTeX PDF management code. Currently---until \pkg{hyperref} has been
% adapted to use this driver it has to be loaded with
% \begin{verbatim}
% \usepackage[customdriver=hgeneric-experimental]{hyperref}
% \end{verbatim}
% Both the name of the driver and the loading method will change.
%
% The generic driver can be used with pdflatex, lualatex, xelatex, latex with
% dvipdfmx, latex with dvips+ps2pdf. latex with dvips+distiller could work too
% but is untested.
%
% The driver requires the new PDF management code, so document wanting to use it should
% start like this
% \begin{verbatim}
% \RequirePackage{pdfmanagement} %loads the code
% \DeclareDocumentMetadata % activates it
% {
% % options
% % e.g. pdf version, backend:
% % pdfversion=1.7,
% % backend = dvipdfmx
% }
% \end{verbatim}
%
% \section{Differences}
% The new driver tries to be compatible with the current \pkg{hyperref} drivers
% but there are nevertheless differences. Some of them due to the still experimental
% status of the driver, others are design decision: one part of the project is
% to clean up and modernize the code.
%
% \subsection{Bookmark code}
% The driver doesn't contain code to handle bookmarks/outlines. Instead it forces
% the loading of the \pkg{bookmark} package. Currently this is done at the end of the preamble
% so if commands from \pkg{bookmark} are needed in the preamble the document
% still has to load it manually but this is subject to change.
%
% \subsection{Link decorations: border, color, OCG-color, \ldots}
%
% \pkg{hyperref} allows either to color the link text, or to use a border around it.
% There is also a (rather unknown) option to use small caps instead of colors.
%
% The \emph{link border} is a setting in the annotation directory. It can be colored
% and styled (with the |XXbordercolor|, |pdfborderstyle| and |pdfhighlight| keys),
% but the exact look depends on the PDF viewer. Such decorations are normally not
% printed.
%
% The link text is \emph{colored} with the standard color commands for text.
% Such a color is also printed, which is often not wanted.
% PDF allows to avoid this problem with so-called OCG-layers: They allow to add
% variants of a text along with instructions which variant should be used for
% viewing and which for printing. \pkg{hyperref} implements a rather simple version
% for links: The link text is put in a box and printed twice with different colors
% on different OCG layers. As boxes are used such links can not be broken. The
% package {ocgx2} implements a more sophisticated version which allows to
% use it for links broken over lines and pages too.
%
% In the current implementation the options are exclusive and global:
% One of the options (colorlinks or borders) has to be chosen in the preamble
% and is then used for the whole document and all link types. Only colors and
% eventually the border style can be adjusted locally. But there is no technical
% reason for these restrictions: It is quite possible to change all these attributes
% at any time both by link type and locally. There is also no reason why
% the formatting of the link text is restricted to colors.
%
% \pkg{hyperref} has keys to set the color and border for |link|, |url|, |file|,
% |menu| and |run| types. They correspond to the PDF annotation types
% GoTo, URI, GoToR, Named, Launch.
% Beside this there is |anchor| which is not used at all, and |cite| which is
% a semantical category and doesn't fit to the other types.
%
% The new driver tries to extend the possible options and to clean up the code while
% staying if possible compatible to the current behaviour.
%
% \subsubsection{New Keys}
% Some of the existing keys have been extended to allow individual setting for
% the link types |link|, |url|, |file| |menu| and |run|:
%
% \begin{itemize}
% \item Beside |pdfborder| there are also |linkborder| etc
% \item Beside |pdfhighlight| there are also |linkhighlight| etc
% \item Beside |pdfborderstyle| there are also |linkborderstyle|
% \item Beside |colorlinks| there are also |colorlink|, |colorurl| etc %TODO
% \item Beside |ocgcolorlinks| there are also |ocgcolorlink|, |ocgcolorurl|, etc %TODO
% \item Beside |hidelinks| there are also |hidelink|, |hideurl|, etc %TODO
% \item New keys |formatlinks|, |formatlink|, |formaturl|, etc which %TODO
% allow to add arbitrary formatting instructions like |\bfseries|.
% \end{itemize}
%
% \subsubsection{Changed behaviour}
% \begin{itemize}
% \item
% \item |colorlinks| will as before disable the |pdfborder|, but it is possible to change
% this in the document at any time, or to reenable the border if wanted.
% Internally |colorlinks| \& friends will no longer define/undefine
% |\Hy@colorlink|, but instead use the hooks provided by the \pkg{l3pdfannot} package.
% \item
%
% \end{itemize}
%
%
%
%
%
%
% \subsection{PDF strings}
%
% \pkg{hyperref} use a command called \cs{pdfstringdef} to convert text input into
% something that both makes sense and is valid in a PDF string, e.g. in the bookmarks
% or in the info dictionary or as form field values.
%
% As the handling of the outlines are delegated to the \pkg{bookmark} package, they
% will for now still use \cs{pdfstringdef}, but all other strings produced by
% this driver will use a new method based on \cs{text_purify:n} and
% \cs{str_set_convert:Nnnn}. For normal text
% it shouldn't matter, but a variety of commands and math are handled differently.
% Like with \cs{pdfstringdef} they are a number of ways to adjust the outcome of
% \cs{text_purify:n}. These are described in the expl3 documentation interface3.pdf.
%
% Important differences here are
% \begin{itemize}
% \item \emph{This new method requires that files are utf8-encoded}
% (at least if non-ascii chars are used in for PDF strings).
% \item \emph{All} robust commands are removed, unless an equivalent has been
% declared.
% \item Currently the new method is much more silent: it doesn't warn like
% \pkg{hyperref} if it removes commands.
% \end{itemize}
% \subsection{Package options from hyperref}
% Only a few package options are recognized by the new driver currently
% as \pkg{hyperref} hasn't been adapted yet.
%
% Such options should be set with \cs{hypersetup} after
% the package has been loaded. This can also be the case for options which normally
% don't work in \cs{hypersetup}.
%
% Options that still must be set as package options are
% \begin{itemize}
% \item |pdfpagelabels| (a boolean)
% \end{itemize}
%
% \subsection{Draftmode}
% pdftex and other engines knows a
% draftmode and hyperref honors this in some places. The new
% driver ignores this, for example |pagelabels| are always created.
%
% \subsection{Dropped options}
% A number of options are ignored by this driver
% \begin{description}
% \item[pdfversion] The pdfversion should be set in \cs{DeclareDocumentMetadata}
% \item[breaklinks] The option does nothing sensible anyway (apart from triggering
% a warning). Currently with latex+dvips links can not be broken. But there is work
% in progress to change this.
% \item[unicode] This is always true.
% \item[pdfa] If this option is set to true \pkg{hyperref} normally checks and sets
% a small number of requirements for the PDF standard PDF/A.
% The key is ignored with this driver. Instead the wanted standard should be declared
% in \cs{DeclareDocumentMetadata}:
% \begin{verbatim}
% \DeclareDocumentMetadata{standard=A-2b}
% \end{verbatim}
% Currently |A-1b|, |A-2b|, |A-3b| can be set.
% The support for various requirements is still incomplete, but the parts that
% \pkg{hyperref} already checked are implemented:
% \begin{itemize}
% \item The |/F| key is added to links and Print is activated, Hidden, Invisible,
% NoView are deactivated.
% \item |/NeedAppearances| is suppressed
% \item Pushbuttons, which use the action |/S/JavaScript| are suppressed
% \item Resetbuttons, which use the action |/S/ResetForm| are suppressed Resetbutton
% \item In widget annotations, the /AA dictionary is suppressed.
% \end{itemize}
% \end{description}
% \subsection{Destinations}
% Destinations (sometimes call anchors in the \pkg{hyperref} documentation)
% are the places a link jumped too. Unlike the name may suggest they don't described
% an exact location in the PDF. Instead a destination contains a reference to
% a page along with an instruction how to display this page.
% The normally used \enquote{XYZ \textit{top left zoom}} for example instructs
% the viewer to show the page with the given \textit{zoom} and
% the top left corner at the \textit{top left} coordinates---which then gives
% the impression that there is an anchor at this position.
%
% From these instructions two |Fit| and |FitB| are absolute. All
% others take one (|FitH|, |FitV|, |FitBH|, |FitBV|)
% or more (|XYZ|, |FitR|) arguments. These arguments are normally
% coordinates, |XYZ| takes also a zoom factor. The coordinates are
% absolute coordinates in bp relative to the lower left corner
% of the PDF.
%
% With pdftex almost all instructions
% don't take an argument: The needed coordinate is instead calculated from the location
% the \cs{pdfdest} command is issued. So to get a specific coordinate one has to
% move the command to the right place. E.g.
% \begin{verbatim}
% \AddToHookNext{shipout/background}
% {\put(0,-\pdfpageheight+100bp){\pdfdest name{destA} FitH\relax}}
% \end{verbatim}
%
% Exceptions are the |XYZ| instruction, where pdftex accepts a keyword
% |zoom| followed by a zoom factor, and the |FitR| instruction
% which understands the keywords |width|, |height| and |depth|
% followed by a dimension, which is then used to calculate a rectangle relative to the
% current location. If no keywords are given the dimensions are taken from the surrounding
% box---which can also lead to zero sized areas.
%
% The manual of \pkg{hyperref} gives a bit the impression as if this
% coordinates can be set manually by the user but as described above this is
% mostly wrong: It is for normal destination only possible with a dvi-backend like
% dvips which make use of pdfmark.def. pdftex and luatex can use manual coordinates
% only for |pdfstartview| and |pdfremotestartview|
% As dvips was the first driver of \pkg{hyperref} the option |pdfview| was at first
% developed for it and then adapted to pdftex. But this had the effect that the handling
% of the option |pdfview| is inconsequent across the backend and engines:
% For example with |pdfview=FitH 100| pdftex ignores the
% number and calculates on its own, while dvips sets the coordinate to the absolute
% 100. The zoom factor of XYZ is not supported by the pdftex driver at all, and
% |FitR| only partially.
%
% The generic driver consolidate this but tries to stay compatible with the other
% drivers as far as possible.
% It also takes into account the |pdfview| and |pdfstartview| and |pdfremotestartview|
% have different requirements: While for the first relative coordinates are fine,
% for the two others absolute coordinates are more sensible.
%
% So with this driver the options
% |pdfview|, |pdfstartview| and |pdfremotestartview| take
% the following options:
% \begin{itemize}
% \item |Fit|, |FitB|, |FitH|, |FitV|,
% |FitBH|, |FitBV| which can be followed by a positive integer (separated by a space) or the
% keyword |null|.
% The number can be gives as a \meta{dimension expression} surrounded with
% \cs{hypercalcbp}. The driver redefines this command to use
% \cs{dim_to_decimal_in_bp:n}.
% \begin{itemize}
% \item |pdfview| will ignore the integer and any other arguments and calculate
% the expected coordinates as described above for pdftex with all
% supported engines and backends.
% \item |pdfstartview| and |pdfremotestartview| will pass the optional
% number or keyword after expansion as absolute coordinate. If needed they will
% extend them with |null|
% \end{itemize}
%
% \item |XYZ|. This can be followed (separated by spaces) by up to three
% positive integers or keywords |null| which are then taken as \textit{top left zoom}
% in this order. \textit{zoom} is a factor, so e.g. 0.5 will give a scaling of 50\%.
% \begin{itemize}
% \item |pdfview| will use the last value as \textit{zoom}, ignore all other values
% and calculate the expected coordinates as described above for pdftex with all
% supported engines and backends (this means it is possible to use |XYZ 2| to
% set a zoom of 200\%, it is not necessary to fill in dummy values.)
% \item |pdfstartview| and |pdfremotestartview| will pass the optional
% numbers or keyword after expansion as absolute coordinates and zoom.
% If needed they will extend them with |null|.
% \end{itemize}
% This new behaviour is in part incompatible with previous handling with the dvips driver.
%
%
% \item |FitR|.
% If no argument (separated by spaces) follows then
% |pdfview| will use with pdftex and luatex
% the automatic calculation of the coordinates from the encompassing box. With
% dvips and (x)dvipdfmx it will fall back to |Fit|.
% |pdfstartview| and |pdfremotestartview| will fallback to |Fit| too.
%
% If arguments (separated by spaces) follow they should be
% four numbers representing \texttt{left bottom right top}.
% \begin{itemize}\item
% |pdfview| will use the values to calculate coordinates relative to the current
% location. So |0 -100 200 400| will give a \enquote{box} of width 200bp,
% height 400bp and depth 100dp that the destination should encompass.
% Missing numbers will be set to 0. But one should be aware that is it is quite
% unpredicable how viewers which support |FitR| handles zero sizes.
%
% \item |pdfstartview| and |pdfremotestartview| will pass
% the values as absolute coordinates.
% \end{itemize}
% \end{itemize}
%
%
%^^A %% This is an adapted version of hluatex.def
%^^A %% meant to test the use of the commands
%^^A %% from pdfmanagement.sty
%^^A %%
%^^A %% drivers are loaded in line 4745 in hyperref.sty in a \Hy@AtEndOfPackage command.
%^^A %%%%%%%%%%%%%%%%%%%%%%%%%%%%
%^^A %% list of new internal commands
%^^A %% __hyp_link_goto_begin:nw : start command for links to internal destination
%^^A %% replaces \find@pdflink
%^^A %% __hyp_link_goto_end:
%^^A %% __hyp_destination:n : sets an anchor, replaces \new@pdflink
%^^A %% \__hyp_PageLabels_gpush: : puts pagelabels in the catalog, used on every storing
%^^A %% PDF String (text)
%^^A %% *\@@_text_pdfstring:nnN : replaces Hy@pstringdef, converts #1 to pdfstring in encoding #2
%^^A %% and stores in N
%^^A %% Build with:
%^^A %% *\@@_text_purify:nN
%^^A %% *\@@_text_cleanup:N
%^^A %% *\@@_text_convert:nN
%^^A %%
%^^A %% Destinations (dest)
%^^A %% \l_@@_dest_box
%^^A %%
%^^A %% References (ref)
%^^A %% *\@@_ref_label:nn
%^^A %% *\@@_ref_if_exist:nn
%^^A %% *\@@_ref_check:nn
%^^A %% % helps to display key list messages
%^^A %% \@@_clist_display:n
%^^A %%
%^^A %% \__hyp_info_generate_addons: what did this do??
%^^A %%
%^^A %% \g__hyp_AcroForm_CoFields_prop
%^^A %% \g__hyp_AcroForm_Fields_prop
%^^A %%
%^^A %% \g_@@_dest_pdfstartpage_tl ,
%^^A %% \g_@@_dest_pdfstartview_tl ,
%^^A %% \l_@@_dest_pdfremotestartview_tl ,
%^^A
%^^A %% Constants
%^^A %% *\c_@@_map_annot_hyp_prop
%^^A %% *\c_@@_dest_undefined_tl
%^^A %% Temp variables
%^^A %% \l_@@_tmpa_seq
%^^A %% \l_@@_tmpa_box
%^^A %% \l_@@_tmpa_tl
%^^A %% \l_@@_tmpa_str
%^^A %% \l_@@_tmpa_int
%^^A %%
%^^A %% \l_@@_dest_name_tmpa_tl
%^^A %% \l_@@_uri_tmpa_tl
%^^A %% \l_@@_filename_tmpa_tl
%^^A %% \l_@@_para_tmpa_tl
%^^A %% \l_@@_text_tmpa_str
%^^A %% \g_@@_text_tmpa_str
%^^A %% \l_@@_CheckmarkYes_tl
%^^A %% \l_@@_CheckmarkOff_tl
%^^A %% \l_@@_RadioYes_tl
%^^A
%^^A %% \l_@@_dest_pdfview_tl
%^^A %% list of commands which probably will have to change
%^^A %% \Hy@EXPsetbordercolor
%^^A % % \hypupdateattribute
% \begin{macrocode}
%<*package>
%<@@=hyp>
% \end{macrocode}
% \begin{macrocode}
\ProvidesFile{hgeneric-experimental.def}
[2020/12/26 v0.71 %
Hyperref driver for luaTeX]
\RequirePackage{etoolbox} %why?
% \end{macrocode}
% We need l3color for the color export command and need to activate
% the patches for color and xcolor.
% It would be too late for colors defined earlier, but is the best one
% can do for now.%
% \begin{macrocode}
\RequirePackage{l3color}
\ExplSyntaxOn
\cs_gset_eq:NN \@expl@color@set@@@@nnn \color_set:nnn
\ExplSyntaxOff
\@ifpackageloaded{xcolor}{\@firstoftwo}{\@secondoftwo}
{
\RequirePackage{xcolor-patches-tmp}
\XC@@@@names
}
{
\AddToHook{package/after/xcolor}
{\RequirePackage{xcolor-patches-tmp}\XC@@@@names}
}
% \end{macrocode}
%
% \section{messages}
% Redirect the message name:
% \begin{macrocode}
\ExplSyntaxOn
\prop_gput:Nnn \g_msg_module_name_prop { hyp }{ hyperref }
% \end{macrocode}
% At first a message for the testing of the resource management
% \begin{macrocode}
\msg_new:nnnn
{ hyp }
{ missing-resource-management }
{ The~PDF~resource~management~is~required~for~this~hyperref~driver! }
{
Activate~it~with \\
\tl_to_str:n{\RequirePackage{pdfmanagement}}\\
\tl_to_str:n{\DeclareDocumentMetadata{<options>}}\\
before~\tl_to_str:n{\documentclass}
}
% \end{macrocode}
% The pdfversion should be set in \cs{DeclareDocumentMetadata}
% \begin{macrocode}
\msg_new:nnnn
{ hyp }
{ pdfversion-disabled }
{
This~hyperref~driver~ignores~the~pdfversion~key!\\
Set~the~pdfversion~in~\token_to_str:N \DeclareDocumentMetadata
}
{
For example:\\
\tl_to_str:n
{
\DeclareDocumentMetadata { pdfversion=1.7 }
}
}
% \end{macrocode}
% pdf/A messages for fields, this will probably be moved to an external package
% \begin{macrocode}
\msg_new:nnn
{ hyp }
{ pdfa-no-push-button }
{ PDF/A:~Push~button~with~JavaScript~is~prohibited }
\msg_new:nnn
{ hyp }
{ pdfa-no-reset-button }
{ PDF/A:~Reset~action~is~prohibited }
% \end{macrocode}
% A message if the destination name is empty.
% \begin{macrocode}
\msg_new:nnn
{ hyp }
{ empty-destination-name }
{
Empty~destination~name,\\
using~`#1'
}
% \end{macrocode}
% A message if the destination check fails
% \begin{macrocode}
\msg_new:nnn
{ hyp }
{ invalid-destination-value }
{
Invalid~value~`#1'~of~`#2' \\
is~replaced~by~`Fit'~\msg_line_context:.
}
% \end{macrocode}
% Some options or values should not be used in older pdf versions
% \begin{macrocode}
\msg_new:nnn
{ hyp }
{ ignore-deprecated-or-unknown-option-in-pdf-version }
{
Option~`#1'~is~unknown~or~deprecated~in\\
pdf~version~#2.~Ignored.
}
\msg_new:nnn
{ hyp }
{ ignore-deprecated-or-unknown-value-in-pdf-version }
{
Value~`#1'~is~unknown~or~deprecated~in\\
pdf~version~#2.~Ignored.
}
\msg_new:nnn
{ hyp }
{ replace-deprecated-or-unknown-value-in-pdf-version }
{
Value~`#1'~is~unknown~or~deprecated~in\\
pdf~version~#2. Value~`#3'~is used instead.
}
% \end{macrocode}
% During development not all standard hyperref keys are known, this issues a warning
% for now:
% \begin{macrocode}
\msg_new:nnn
{ hyp }
{ unknown-key }
{
unknown~key~#2~of~module~’#1’~set~to~’#3’.
}
% \end{macrocode}
% There are a lot choice keys. This defines messages which shows the valid
% choices if a faulty one has been used:
% \begin{macrocode}
\cs_new:Npn \@@_clist_display:n #1 {*~#1\\}
\msg_new:nnn
{ hyp }
{ unknown-choice }
{
Value~'#3'~is~invalid~for~key~'#1'.\\
The~key~accepts~only~the~choices\\
\clist_map_function:nN { #2 }\@@_clist_display:n
}
\msg_new:nnn
{ hyp }
{ unknown-choice+empty }
{
Value~'#3'~is~invalid~for~key~'#1'.\\
The~key~accepts~only~the~choices\\
\clist_map_function:nN { #2 }\@@_clist_display:n
An~empty~value~removes~the~setting.
}
\msg_new:nnn
{ hyp }
{ no-bool }
{
Value~'#2'~is~invalid~for~key~'#1'.\\
The~key~accepts~only~the~choices\\
*~true\\
*~false \\
*~and~an~empty~value~which~removes~the~setting.\\
No~value~is~equivalent~to~using~`true`.
}
\ExplSyntaxOff
% \end{macrocode}
% \section{Overwriting/providing commands from hyperref}
% hyperref checks driver version, we need to suppress this during the development
% \begin{macrocode}
\chardef\Hy@VersionChecked=1 %don't check the version!
\ExplSyntaxOn
% \end{macrocode}
%
% We define a better (expandable) version of \cs{hypercalcbp}
% \begin{macro}{\hypercalcbp}
% \begin{macrocode}
\cs_set_eq:NN \hypercalcbp \dim_to_decimal_in_bp:n
% \end{macrocode}
% \end{macro}
% This is used as default file extension, should probably go into hyperref.
% \begin{macrocode}
\providecommand*{\XR@ext}{pdf} %
% \end{macrocode}
%
% This command must be provided for now, but they are unused by the driver:
% \begin{macrocode}
\providecommand\@pdfborder{}
\providecommand\@pdfborderstyle{}
% \end{macrocode}
%
% We force unicode as option. As bookmarks are still using \cs{pdfstringdef}
% we also need to load puenc.def.
% \begin{macrocode}
\HyPsd@LoadUnicode
\Hy@unicodetrue
\let\HyPsd@pdfencoding\HyPsd@pdfencoding@unicode
\Hy@DisableOption{unicode}
% \end{macrocode}
% The pdfversion should be set in \cs{DeclareDocumentMetadata} but we must
% copy it to the \pkg{hyperref} command:
% \begin{macrocode}
\cs_set_eq:NN \Hy@pdfminorversion \pdf_version_minor:
\cs_set_eq:NN \Hy@pdfmajorversion \pdf_version_major:
% \end{macrocode}
% \begin{macrocode}
\legacy_if:nT { Hy@ocgcolorlinks }
{
\pdf_version_compare:NnT < {1.5}
{
\msg_warning:nnnx
{ hyp }
{ ignore-deprecated-or-unknown-option-in-pdf-version }
{ ocgcolorlinks } { \pdf_version_major:.\pdf_version_minor: }
\Hy@ocgcolorlinksfalse
\Hy@DisableOption{ocgcolorlinks}
}
}
\legacy_if:nT { Hy@setpdfversion }
{
\msg_warning:nn { hyp }{ pdfversion-disabled }
}
\Hy@DisableOption{pdfversion}
% \end{macrocode}
% \section{Checks}
% The driver can not work properly if the pdfmanagement is not active,
% as keys need to write to the catalog and to info. But annotations
% and outlines should work.
% So should this be a fatal error?
% Should there be a difference between missing and inactive management?
% TODO
% \begin{macrocode}
\bool_lazy_and:nnF
{ \cs_if_exist_p:N \pdfmanagement_if_active_p: }{ \pdfmanagement_if_active_p: }
{ \msg_error:nn { hyp}{ missing-resource-management } }
% \end{macrocode}
% Outlines/bookmarks require the bookmark package.
% \begin{macrocode}
\AddToHook{begindocument/before}{\RequirePackage{bookmark}}
% \end{macrocode}
%
% \section{Reference and label commands}
% The code uses the l3ref-tmp package which
% must have been loaded as pdfmanagement is a requirement.
% The commands use after the module prefix always |_ref|.
%
% At first a label command which add the space commands from LaTeX:
% \begin{macrocode}
%
\cs_new_protected:Npn \@@_ref_label:nn #1 #2 %label/attributes
{
\@bsphack
\ref_label:nn{#1}{#2}
\@esphack
}
\cs_generate_variant:Nn \@@_ref_label:nn {en}
% \end{macrocode}
% This provides a condition which tests if a label/attribute combination is known
% \begin{macrocode}
\prg_new_eq_conditional:NNn \@@_ref_if_exist:nn \ref_if_exist:nn { p , T , F, TF }
\prg_generate_conditional_variant:Nnn \@@_ref_if_exist:nn {en} { p , T , F, TF }
% \end{macrocode}
% This checks if the label/attribute is known and issues a warning if not.
% It then also triggers the standard rerun message.
% \begin{macrocode}
\cs_new_protected:Npn \@@_ref_check:nn #1 #2 %label/attribute
{
\@@_ref_if_exist:nnF {#1}{#2}
{
\protect\G@refundefinedtrue
\@latex@warning
{
Reference~`\tl_to_str:n {#1}'~with~attribute~`\tl_to_str:n {#2}'~
on~page~\thepage~\space undefined
}
}
}
\cs_generate_variant:Nn \@@_ref_check:nn {en}
% \end{macrocode}
% This retrieves a value, it is a simple wrapper around the \cs{ref_value:nn}
% \begin{macrocode}
\cs_new:Npn \@@_ref_value:nn #1 #2
{
\ref_value:nn{#1}{#2}
}
\cs_generate_variant:Nn \@@_ref_value:nn {en}
% \end{macrocode}
%
% \section{Variables}
% \subsection{Private temporary variables}
% At first a few generic tmp variables
% \begin{variable}
% {
% \l_@@_tmpa_tl,
% \l_@@_tmpa_seq,
% \l_@@_tmpa_int,
% \l_@@_tmpa_box,
% \l_@@_tmpa_str,
% }
% \begin{macrocode}
\box_new:N \l_@@_tmpa_box
\tl_new:N \l_@@_tmpa_tl
\seq_new:N \l_@@_tmpa_seq
\int_new:N \l_@@_tmpa_int
\str_new:N \l_@@_tmpa_str
% \end{macrocode}
% \end{variable}
%
% A number of more specific tmp variables. These will perhaps disappear or change.
% \begin{variable}
% {
% \l_@@_dest_name_tmpa_tl,
% \l_@@_uri_tmpa_tl,
% \l_@@_filename_tmpa_tl,
% \l_@@_para_tmpa_tl
% \l_@@_text_tmpa_str
% \g_@@_text_tmpa_str
% }
% TODO: document and check use!
% \begin{macrocode}
\tl_new:N \l_@@_dest_name_tmpa_tl
\tl_new:N \l_@@_uri_tmpa_tl
\tl_new:N \l_@@_filename_tmpa_tl
\tl_new:N \l_@@_para_tmpa_tl
\str_new:N \l_@@_text_tmpa_str
\str_new:N \g_@@_text_tmpa_str
% \end{macrocode}
% \end{variable}
%
% \subsection{Constants}
% \begin{variable}
% { \c_@@_dest_undefined_tl }
% This variable is used if a destination name is empty.
% \begin{macrocode}
\tl_const:Nn \c_@@_dest_undefined_tl {UNDEFINED}
% \end{macrocode}
% \end{variable}
% \begin{variable}
% {
% \c_@@_map_annot_hyp_prop,
% \c_@@_map_hyp_annot_prop,
% }
% This constants holds the link types managed by hyperref
% along with a mapping from annot names to hyperref names and back.
% \begin{macrocode}
\prop_const_from_keyval:Nn \c_@@_map_annot_hyp_prop
{
URI = url,
GoTo = link,
GoToR = file,
Named = menu,
Launch= run
}
\prop_const_from_keyval:Nn \c_@@_map_hyp_annot_prop
{
url = URI,
link = GoTo,
file = GoToR,
menu = Named,
run = Launch
}
% \end{macrocode}
% \end{variable}
% \subsection{Variables}
% \begin{variable}
% {
% \g_@@_dest_pdfstartpage_tl ,
% \g_@@_dest_pdfstartview_tl ,
% \l_@@_dest_pdfremotestartview_tl ,
% }
% The first holds the (absolute) start page number,
% the other the startview instruction for the current and remote files.
% The instruction is in \enquote{PDF format} but without the leading slash!
% \begin{macrocode}
\tl_new:N \g_@@_dest_pdfstartpage_tl
\tl_new:N \g_@@_dest_pdfstartview_tl
\tl_new:N \l_@@_dest_pdfremotestartview_tl
% \end{macrocode}
% \end{variable}
%
% It is still unclear which str convert option is the best in the various
% places, so we use a variable to allow tests and perhaps external configuration.
% The \enquote{print} type should always have the delimiters.
% \begin{variable}
% {
% \l_@@_text_enc_uri_print_tl,
% \l_@@_text_enc_info_print_tl,
% \l_@@_text_enc_dest_tl,
% \l_@@_text_enc_dest_print_tl,
% \l_@@_text_enc_file_print_tl,
% \l_@@_text_enc_para_print_tl
% }
% \begin{macrocode}
\tl_new:N \l_@@_text_enc_uri_print_tl
\tl_new:N \l_@@_text_enc_info_print_tl
\tl_new:N \l_@@_text_enc_dest_tl
\tl_new:N \l_@@_text_enc_dest_print_tl
\tl_new:N \l_@@_text_enc_file_print_tl
\tl_new:N \l_@@_text_enc_para_print_tl
\tl_set:Nn \l_@@_text_enc_uri_print_tl {utf8/URIpdf-print}
\tl_set:Nn \l_@@_text_enc_info_print_tl {utf16/hex-print}
\tl_set:Nn \l_@@_text_enc_dest_tl {utf8/string}
\tl_set:Nn \l_@@_text_enc_dest_print_tl {utf8/string-print}
\tl_set:Nn \l_@@_text_enc_file_print_tl {utf8/string-print}
\tl_set:Nn \l_@@_text_enc_para_print_tl {utf8/string-print}
% \end{macrocode}
% \end{variable}
% \begin{variable}{\l_@@_dest_pdfview_tl}
% This hold the destination instructions in a format suitable for
% \cs{pdf_destination:nn}. The special value |fitrbox| indicates a boxed destination.
% \begin{macrocode}
\tl_new:N \l_@@_dest_pdfview_tl
% \end{macrocode}
% \end{variable}
%
% \subsection{Boxes}
% \begin{variable}{\l_@@_dest_box}
% This holds an (empty) box which is used to get the width for FitR destinations.
% \begin{macrocode}
\box_new:N \l_@@_dest_box
% \end{macrocode}
% \end{variable}
% \subsection{Regex}
% \begin{variable}{\c_@@_dest_startview_regex}
% This regex is used to extract the right arguments
% pdfstartview and pdfremotestartview. Their values is filled up with |null|
% and then the start extracted.
% \begin{macrocode}
\regex_const:Nn \c_@@_dest_startview_regex
{
\A\ *
(?:
(?:XYZ (?:\ +(?:(?:\d+|\d*\.\d+)|null)){3}\ )
|
(?:Fit\b|FitB\b)
|
(?:(?:FitH|FitV|FitBH|FitBV)(?:\ +(?:\d+|\d*\.\d+)|\ +null){1})
|
(?:FitR (?:\ +\d+|\ +\d*\.\d+){4}\ )
)
}
% \end{macrocode}
% \end{variable}
%
% \subsection{PDF dictionaries}
% \begin{variable}{l_@@_page/Trans}
% This dictionary is used for page transitions.
% \begin{macrocode}
\pdfdict_new:n {l_@@_page/Trans}
\pdfdict_put:nnn {l_@@_page/Trans}{Type}{/Trans}
% \end{macrocode}
% \end{variable}
% \section{PDF string conversion}
%
% This defines a command which is used to replace
% \cs{pdfstringdef}. This is probably temporary and will be adjusted or
% replaced if some more generic PDF string command/module exists.
% All commands here use the \enquote{submodule} name \texttt{text}.
% At first a hook for user additions:
% \begin{macrocode}
\hook_new:n {hyp/text/pdfstring}
% \end{macrocode}
% The first step to convert input in a PDF string is to purify it, that means
% to remove/expand commands. As the whole process is not expandable anyway we
% can use a protected command. The \enquote{output} is a string:
% \begin{macro}{\@@_text_purify:nN}
% \begin{macrocode}
\cs_new_protected:Npn \@@_text_purify:nN #1 #2 %#1 input, #2 str command
{
\str_set:Nx #2 {\text_purify:n { #1 } }
}
% \end{macrocode}
% \end{macro}
% The second step is to cleanup the output of the first step. This is a dummy
% currently. The argument should be a string variable.
% \begin{macro}{\@@_text_cleanup:N}
% \begin{macrocode}
\cs_new_protected:Npn \@@_text_cleanup:N #1
{
}
% \end{macrocode}
% \end{macro}
% The last step converts the string to a PDF encoding. As we have at least two
% targets (hex and literal) there is an argument. The conversion assumes
% utf8 input, it is based on cs{pdf_text_convert:nnN} in l3pdftools.
%
% \#2 is str variable,
% \#1 should be one of
% \begin{tabular}{ll}
% utf8/string-print & \texttt{(lit)} (utf8/string)\\
% utf8/string & \texttt{lit} (utf8/string)\\
% utf8/URIpdf-print & \texttt{(percent encoded url)}\\
% utf8/URIpdf & \texttt{percent encoded url}\\
% utf16/hex-print & \texttt{<HEX>} (utf16/hex)\\
% utf16/hex & \texttt{HEX} (utf16/hex)\\
% utf16/string_print & \texttt{(lit)} (utf16/string)\\
% utf16/string-lit & \texttt{lit} (utf16/string)
% \end{tabular}
% \begin{macro}{ \@@_text_convert:nN }
% \begin{macrocode}
\cs_new_protected:Npn \@@_text_convert:nN #1 #2
{
\pdf_text_convert:nVN { #1 } #2 #2
}
% \end{macrocode}
% \end{macro}
% This command combines everything.
% |#1|=input, |#2|= handler shortcut |#3|= output str variable
% The commands uses a group to locally set \cs{Hy@pdfstringtrue}
% so that \cs{texorpdfstring} works and other local settings can be done.
%
% \begin{macro}{ \@@_text_pdfstring:nnN }
% \begin{macrocode}
\cs_new_protected:Npn \@@_text_pdfstring:nnN #1 #2 #3
{
\group_begin:
\Hy@pdfstringtrue
\hook_use:n {hyp/text/pdfstring}
\@@_text_purify:nN { #1 } \l_@@_text_tmpa_str
\@@_text_cleanup:N \l_@@_text_tmpa_str
\@@_text_convert:nN { #2 } \l_@@_text_tmpa_str
\str_gset_eq:NN \g_@@_text_tmpa_str\l_@@_text_tmpa_str
\group_end:
\str_set_eq:NN #3 \g_@@_text_tmpa_str
}
\cs_generate_variant:Nn \@@_text_pdfstring:nnN {xnN,onN,xoN,ooN,noN}
% \end{macrocode}
% \end{macro}
% !!! temporary until all instances are gone
%^^A TODO check if the redefinition of |~| is needed (probably not)
%^^A \edef~{\string~}%
%^^A \char_set_catcode_other:N \~
%^^A \char_set_active_eq:NN \~ \c_tilde_str
%^^A \char_set_catcode_active:N \~
% \begin{macrocode}
\cs_new_protected:Npn\Hy@pstringdef #1 #2
{ \@@_text_pdfstring:xnN {#2} {utf8/string}#1 }
% \end{macrocode}
% This is a special version for info keys:
% \begin{macro}{ \@@_text_pdfstring_info:nN }
% \begin{macrocode}
\cs_new_protected:Npn \@@_text_pdfstring_info:nN #1 #2
{
\@@_text_pdfstring:noN { #1 }{ \l_@@_text_enc_info_print_tl } #2
}
% \end{macrocode}
% \end{macro}
% \section{Pagelabels}
% Page labels are representations of the page numbers in the PDF viewer. If the hyperref
% options |pdfpagelabels| is true (the default) roman numbers are e.g. shown as
% \enquote{ii (2/58)}. To do this the page ranges must be collected, if possible a prefix
% and the numbering of the counter must be identified and then written
% to the catalog.
%
% The current implementation in hyperref/hyperref drivers:
% \begin{description}
% \item[xetex:] hxetex.def, line 80-110\\
% |\HyPL@StorePageLabel| writes to the aux-file
% at begin document (after reading the aux)
% |\HyPL@SetPageLabels| is called (defined in hyperref.sty after the driver
% loading)
% which calls |\Hy@PutCatalog{/PageLabels<</Nums[\HyPL@Labels]>>}|
% \item[dvips:] identical to xetex, line 60 to 90 in pdfmark.def
% \item[dvipdfm:] identical to xetex
% \item[pdftex:] |\HyPL@StorePageLabel| stores in |\HyPL@Labels| in the first compilation
% In |\AtVeryEndDocument| |\HyPL@SetPageLabels| is called.
% \item[luatex] identical to pdftex
% \end{description}
%
% The code in \pkg{hyperref} inspects |\thepage| and tries to figure out
% the numbering system and the prefix. E.g. A-\arabic{page} is correctly split.
% If the counter can not be identified \pkg{hyperref} generates only /P entries with the
% whole content.
%
% The new implementation makes use of the pdf management: The relevant entry in the
% catalog is continuously updated and pushed out at the end of the document.
% This works (hopefully \ldots) with all drivers.
%
% We do not try to avoid the (in hyperref's wording)
% \enquote{useless} pagelabel entry
% |/PageLabels <</Nums[0<</S/D>>]>>|
% (but it would be possible), we also don't test for empty |\thepage|,
% \pkg{hyperref} seems to handle this fine and the pdf is valid.
%
% The code has to define |\Hy@PutCatalog| as we can't yet
% change code in hyperref. The switch for draftmode has been removed.
%
% \begin{macro}
% {
% \@@_PageLabels_gpush:,
% \Hy@PutCatalog,
% \HyPL@StorePageLabel
% }
% \begin{macrocode}
\cs_new_protected:Npn\@@_PageLabels_gpush:
{
\pdfmanagement_add:nnx {Catalog} {PageLabels}{<</Nums[\HyPL@Labels]>>}