blob: 7ca6e6f2814af6122c25bc09f902b5b9b9a88625 (
plain)
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
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
|
% altnline.sty Version - 1.1
%
% Disclaimer - Use at your own risk.
%
% James Fortune
% Oakland University
% jafortun@vela.acs.oakland.edu
%
% Based upon the TUGboat article ``Output Routines: Examples and Techniques.''
% that appeared in Volume 11 (1990), Nos. 1, 3 and 4.
%
% This version incorporates suggestions made by Michal Jaegermann, namely:
%
% * Include explicit reference to the TUGboat article
% * ``You can use \def in style files without violating LaTeX spirit.
% If you are writing style it is assumed that you know what you are
% doing. :-)'' --- I don't know what I'm doing so I left the \newcommand
% and \renewcommand commands as is.
% * Internal macros from style file should be protected against name conflicts
% with user stuff by inclusion of '@' character in names. --- This is quite
% reasonable so command names that the user is not expected to use in a
% LaTeX file have been changed to include the '@' character.
% * He sent a new appendline command that adds numbers on a left margin
% only that was also inspired by the Salomon article. He left it as an
% exercise for me to modify it for two-sided printing. I probably shouldn't
% have picked something from the double dangerous bend signs for my first
% serious attempt at hacking on a style file :-).
% * A global linesSoFar so that lineCount may be set to linesSoFar to deal
% with box255 being broken from the bottom up. countlines (or its
% equivalent) advances linesSoFar by a count of lines on a current page.
% * Use of a decremented remainder variable to determine when to add a number
% to a line. --- I'm trying to get all the lines first.
% * He advised not trying to combine the countlines and duplicate operations
% into a single loop. ``I am afraid that you really have to first count
% how many lines you have on a page and later use this value to produce
% line numbers.''
%
% Changes to version 1.1 - Michal Jaegermann, ntomczak@vega.math.ualberta.ca
%
% * Added logic to print line numbers only every \lineCountInterval
% * Added a way to set up ONE range of numbered lines; use \nlinesBoundary
% to do that. (It is possible to sprinkle your text with \nlinesBoundary
% commands and they may even do the right thing if you will put them
% in right places - but this is a hack.)
% * Miscellaneous cleanup
% * Every implicit or explicit \clearpage will still cause
% 'Output routine didn't use all of \box255' message. Any volunteers
% who know enough about LaTeX output routine to repair that?
%
% \font\sevenrm=cmr7
% Rainer showed me how to save the previous \output. Thanks Rainer.
\newtoks\LaTeX@output
\LaTeX@output = \expandafter{\the\output}
\newcommand\zero@ToSp{\parskip=\@ne sp plus\@ne pt
\renewcommand\vfil{\vskip1sp plus1fil}
\renewcommand\vfill{\vskip1sp plus1fill}
\abovedisplayshortskip=\@ne sp plus3pt
\postdisplaypenalty=\@ne
\interlinepenalty=\@ne}
\zero@ToSp
\newcount\lin@CountInit % used to establish lineCount of first line on page
\lin@CountInit=\z@
\newcount\lineCountInterval % used to determine how often lin@Count is printed
\lineCountInterval=5
%
\newcount\lin@CountStart % don't print line numbers below this value
\lin@CountStart=\@ne
\newcount\lin@CountFinish % don't print line numbers higher than this
\lin@CountFinish=\m@ne
%
% A command to set boundaries for line numbering. Use as:
% \nlinesBoundary{12}, or \nlinesBoundary[50]{12}
% \nlinesBoundary[<optional upper limit>]<lower limit>
% Any negative number for an upper limit means number to the very end.
% This is a default!
%
\def\nlinesBoundary{\@ifnextchar[{\nlin@sBoundary}{\nlin@sBoundary[\m@ne]}}
\edef\nlin@sBoundary[#1]#2{%
\global\lin@CountFinish=#1\relax
\global\lin@CountStart=#2\relax}
\newif\ifa@@lnum % do we really want to print that line number?
\newcount\lin@sSoFar
% remainder from division of \lin@sSoFar by \lineCountInterval
\newcount\total@Rem
% current value of remainder used to produce line numbers
\newcount\lin@rem
% these calculations allow to start with \lin@CountInit different from 0
\newcommand\resetlin@sSoFar{%
\global\lin@sSoFar=\lin@CountInit
\total@Rem=\lin@CountInit
\divide\total@Rem by\lineCountInterval
\multiply\total@Rem by-\lineCountInterval
\global\advance\total@Rem by\lin@CountInit}
\resetlin@sSoFar
\newcount\lin@Count
\newif\ifAnyleft \newcount\pen
\newcommand\count@lines{%
\global\lin@Count=\lin@sSoFar
\loop \Anyleftfalse
\ifdim\lastskip=\z@ \ifdim\lastkern=\z@ \ifnum\lastpenalty=\z@
\setbox0=\lastbox
\ifvoid0
\else \Anylefttrue \global\advance\lin@Count by\@ne
\global\advance\total@Rem by\@ne
\ifnum\total@Rem=\lineCountInterval
\global\total@Rem=\z@
\fi\fi
\else \Anylefttrue \unpenalty \fi
\else \Anylefttrue \unkern \fi
\else \Anylefttrue \unskip \fi
\ifAnyleft \repeat}
\newcommand\@duplicate{%
\loop \Anyleftfalse
\ifdim\lastskip=\z@ \ifdim\lastkern=\z@ \ifnum\lastpenalty=\z@
\global\setbox0=\lastbox \ifvoid0 % end of breakup loop
\else \Anylefttrue % box present
\ifnum\lin@rem=0 % if remainder non-zero we do not care
\lin@rem=\lineCountInterval
\ifnum\lin@Count<\lin@CountStart
\a@@lnumfalse
\else
\ifnum\lin@CountFinish<0 % no upper bound
\a@@lnumtrue % print it
\else
\ifnum\lin@Count>\lin@CountFinish
\a@@lnumfalse
\else
\a@@lnumtrue % this is the ticket
\fi
\fi
\fi
\else
\a@@lnumfalse
\fi
\ifa@@lnum
\append@line
\else
\global\setbox1=\vbox{\box0\unvbox1}
\fi
\advance\lin@Count\m@ne
\advance\lin@rem by\m@ne\fi
\else \Anylefttrue % penalty present
\pen=\lastpenalty
\global\setbox1=\vbox{\penalty\pen\unvbox1}\unpenalty\fi
\else \Anylefttrue % kern present
\dimen0=\lastkern
\global\setbox1=\vbox{\kern\dimen0\unvbox1}\unkern \fi
\else \Anylefttrue % skip present
\skip0=\lastskip
\global\setbox1=\vbox{\vskip\skip0\unvbox1}\unskip \fi
\ifAnyleft \repeat}
\newcommand\append@line{% attach line number
\setbox2=\vbox to \z@{\smash{\footnotesize\the\lin@Count}}
\wd2=25pt % that much of space for a line number
\ifodd\count0 % on the right margin for odd pages
\setbox0=\hbox{\box0\rlap{\rule{\wd2}{\z@}\box2}}
\else % and on the left for even
\setbox0=\hbox{\llap{\box2}\box0}
\fi
\global\setbox1=\vbox{\box0\unvbox1}} % add this to a reconstructed page
\newbox\brk % Use old output definition if page is not to be output
\output={\ifnum\outputpenalty <-\@M
\output={\LaTeX@output}
\else
\lin@Count=\lin@sSoFar
\setbox\brk=\vbox{\unvcopy\@cclv\count@lines}
\global\setbox1=\vbox{}
\lin@rem=\total@Rem
\global\lin@sSoFar=\lin@Count
\setbox\brk=\vbox{\unvcopy\@cclv\@duplicate}
\ifdim\ht\brk>\z@\message{Incomplete breakup}\fi
\ht1=\z@\dp1=\z@
\global\setbox\@cclv=\vbox to\vsize{\unvbox1}% attempt to get glues back
\@makecol\@opcol
\fi}
\endinput
|
