1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
%% xr package (beta release)
%% Copyright (C) 1993-2019 David Carlisle
%% This is a modified version of the xr package from the Standard LaTeX
%% tools distribution. It has some internal changes to cooperate with
%% the hyperref package, and one new user level argument, also mainly of
%% use for hyperref.
%% If no problems are reported the version in the tools distribution
%% will be updated to match this at the next LaTeX release.
%% \externaldocument[prefix][nocite]{document}[URL]
%% The `document' referred to by the main argument is the file
%% document.aux
%% which must be somewhere on TeX's input path.
%% Some packages (eg hyperref) really need to know the location of the
%% final document rather than the aux file. By default this is assumed
%% to be `document.dvi'. A package may redefine the command \XR@ext to
%% change this default extension (eg some of the hyperref backends
%% define this to be `document.pdf'). However sometimes the final
%% document may be in a position unrelated to the aux file, or the
%% browser may not be able to find files at an arbitrary point in
%% TeX's input path, so the new final optional argument allows a full
%% URL to the final document to be specified.
%%
%% \externaldocument{file}[http://here.xxx.edu/this/path/to/file.dvi]
%%
%% Unless a package redefines \XR@addfile, the optional URL argument
%% will be ignored.
%%
%% This version (beta2) also has another improvement unrelated
%% to the hyperref support. Olivier Michel pointed out that
%% if the aux file was not on texinputs you could not always go
%% \externaldocument{/some/path/to/file}
%% specifically that worked if file.aux was a `simple' document with
%% one aux file, but if \include had been used, the `sub' aux files
%% would not be found by xr in the remote directory.
%% This version calls \filename@parse to get the directory name of the
%% remote directory, which is then explicitly prepended to the names of
%% any included aux files.
%%
%%
%% Version 6.1 incorporates linking to citations in external documents
%% (originally from xcite package and now included in xr.
%%
%% Many packages have variant citation commands (natbib,
%% biblatex,....) and the external document may or may not have used
%% hyperref. Because of these differences the citation linking may not
%% always work, it can be disabled by specifying [nocite] after the
%% prefix:
%%
%% \externaldocument[][nocite]{somefile}
%%
%% In the case of \ref, if the external document has not used
%% hyperref, this package will work like xr and produce the correct
%% text, but can not produce a well formed link as the target document
%% is not set up. In this case you may prefer to use \ref* rather than
%% \ref to avoid generating a hyperlink.
%%
%%
%% History
%%
%% 1997/10/06 v6.00beta2
%%
%% 1999/09/01 v6.00beta3
%% Definitions of \XR@addURL corrected (Heiko Oberdiek).
%%
%% 2000/03/22 v6.00beta4
%% \xdef changed to \protected@xdef.
%%
%% 2019/10/03 v6.1
%% Incorporate updates to xr (including citation support)
%%
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{xr-hyper}
[2019/10/03 v6.1 eXternal References (DPC)]
\def\externaldocument{\@testopt\XR@cite{}}
\let\externalcitedocument\externaldocument
\def\XR@cite[#1]{\@testopt{\XR@[#1]}{}}
\def\XR@[#1][#2]#3{\@testopt{\XR@@{#1}{#2}{#3}}{#3.\XR@ext}}
\def\XR@@#1#2#3[#4]{{%
\makeatletter
\def\XR@prefix{#1}%
\def\XR@nocite{#2}%
\ifx\XR@nocite\XR@@nocite
\let\XR@bibcite\vadjust
\else
\let\XR@bibcite\bibcite
\fi
\def\XR@URL{#4}%
\filename@parse{#3}%
\XR@next#3.aux\relax\\}}
\def\XR@@nocite{nocite}
\def\XR@next#1\relax#2\\{%
\edef\XR@list{#2}%
\XR@loop{#1}}
\def\XR@aux{%
\ifx\XR@list\@empty\else\expandafter\XR@explist\fi}
\long\def\@gobblethree #1#2#3{}
\long\def\@firstofthree #1#2#3{#1}
\long\def\@secondofthree#1#2#3{#2}
\long\def\@thirdofthree #1#2#3{#3}
\def\XR@explist{\expandafter\XR@next\XR@list\\}
\def\XR@loop#1{%
\openin\@inputcheck#1\relax
\ifeof\@inputcheck
\PackageWarning{xr}{^^JNo file #1^^JLABELS NOT IMPORTED.^^J}%
\expandafter\XR@aux
\else
\PackageInfo{xr}{IMPORTING LABELS FROM #1}%
\expandafter\XR@read\fi}
\def\XR@read{%
\read\@inputcheck to\XR@line
\expandafter\XR@test\XR@line...\XR@}
% 2019 update to match xr
\long\def\XR@test#1#2#3#4\XR@{%
\let\XR@tempa\@gobblethree
\ifx#1\newlabel
\let\XR@tempa\@firstofthree
\else\ifx#1\XR@bibcite
\let\XR@tempa\@secondofthree
\else\ifx#1\@input
\let\XR@tempa\@thirdofthree
\fi\fi\fi
\XR@tempa
{\expandafter\protected@xdef\csname r@\XR@prefix#2\endcsname{\XR@addURL{#3}{}{}{}}}%
{\expandafter\bibcite\expandafter{\XR@prefix#2}{#3}}%
{\edef\XR@list{\XR@list\filename@area#2\relax}}%
\ifeof\@inputcheck\expandafter\XR@aux
\else\expandafter\XR@read\fi}
\providecommand*{\XR@addURL}[1]{#1}
% The above definition doesn't actually use the URL, hyperref 6 could
% make a definition like so to put the URL in the fifth field of its
% ref structure.
\@ifpackageloaded{hyperref}{%
\PackageWarningNoLine{xr-hyper}{Load package `hyperref' after `xr-hyper'}%
}{}
%\def\XR@addURL#1{\XR@@dURL#1{}{}{}{}\\}
%\def\XR@@dURL#1#2#3#4#5\\{%
% {#1}{#2}%
% \if!#4!%
% \else
% {#3}{#4}{\XR@URL}%
% \fi
%}
\providecommand\XR@ext{dvi}
\endinput
%%
%% End of file `xr.sty'.
|
