-#LyX 1.4.0cvs created this file. For more info see http://www.lyx.org/
-\lyxformat 243
+#LyX 2.1 created this file. For more info see http://www.lyx.org/
+\lyxformat 448
\begin_document
\begin_header
-\textclass literate-article
+\textclass article
\begin_preamble
%
% This relaxes the noweb constraint that chunks are
\def\nwendcode{\endtrivlist \endgroup}
\let\nwdocspar=\smallbreak
\end_preamble
+\use_default_options false
+\begin_modules
+noweb
+\end_modules
+\maintain_unincluded_children false
\language english
+\language_package default
\inputencoding default
-\fontscheme default
+\fontencoding global
+\font_roman default
+\font_sans default
+\font_typewriter default
+\font_math auto
+\font_default_family default
+\use_non_tex_fonts false
+\font_sc false
+\font_osf false
+\font_sf_scale 100
+\font_tt_scale 100
\graphics default
+\default_output_format default
+\output_sync 0
+\bibtex_command default
+\index_command default
\paperfontsize default
\spacing single
+\use_hyperref false
\papersize default
\use_geometry false
-\use_amsmath 0
+\use_package amsmath 0
+\use_package amssymb 0
+\use_package esint 0
+\use_package mathdots 1
+\use_package mathtools 0
+\use_package mhchem 1
+\use_package undertilde 0
\cite_engine basic
+\cite_engine_type numerical
+\biblio_style plain
\use_bibtopic false
+\use_indices false
\paperorientation portrait
+\suppress_date false
+\justification true
+\use_refstyle 0
+\index Index
+\shortcut idx
+\color #008000
+\end_index
\secnumdepth 3
\tocdepth 3
\paragraph_separation indent
-\defskip medskip
+\paragraph_indentation default
\quotes_language english
-\quotes_times 2
\papercolumns 1
\papersides 1
\paperpagestyle default
\tracking_changes false
-\output_changes true
+\output_changes false
+\html_math_output 0
+\html_css_as_file 0
+\html_be_strict false
\end_header
\begin_body
\begin_layout Title
-
\noun on
noweb2lyx
\end_layout
\begin_layout Author
-
Kayvan A.
Sylvan <kayvan@sylvan.com>
\end_layout
\begin_layout Date
-
May 6, 1999
\end_layout
\begin_layout Abstract
-
This document describes and implements a perl script for importing noweb
files into LyX
\end_layout
\begin_layout Standard
-
-
-\begin_inset LatexCommand \tableofcontents{}
+\begin_inset CommandInset toc
+LatexCommand tableofcontents
\end_inset
\end_layout
\begin_layout Standard
+\begin_inset Newpage newpage
+\end_inset
-\newpage
-
\end_layout
-
\begin_layout Section
-
Introduction
\end_layout
\begin_layout Standard
-
Since version 1.0.1, LyX now supports Literate Programming using
\noun on
noweb
\end_layout
\begin_layout Standard
-
The purpose of
\noun on
noweb2lyx
file to LyX.
\end_layout
-\begin_layout Scrap
+\begin_layout Chunk
<<noweb2lyx.in>>=
-\newline
+\end_layout
+
+\begin_layout Chunk
+
#!@PERL@
-\newline
+\end_layout
+
+\begin_layout Chunk
+
#
-\newline
+\end_layout
+
+\begin_layout Chunk
+
# Copyright (C) 1999 Kayvan A.
Sylvan <kayvan@sylvan.com>
-\newline
+\end_layout
+
+\begin_layout Chunk
+
# You are free to use and modify this code under the terms of
-\newline
+\end_layout
+
+\begin_layout Chunk
+
# the GNU General Public Licence version 2 or later.
-\newline
+\end_layout
+
+\begin_layout Chunk
+
#
-\newline
+\end_layout
+
+\begin_layout Chunk
+
# Written with assistance from:
-\newline
+\end_layout
+
+\begin_layout Chunk
+
# Edmar Wienskoski Jr.
<edmar-w-jr@technologist.com>
-\newline
+\end_layout
+
+\begin_layout Chunk
+
# Amir Karger <karger@post.harvard.edu>
-\newline
+\end_layout
+
+\begin_layout Chunk
+
#
-\newline
+\end_layout
+
+\begin_layout Chunk
+
# $Id: noweb2lyx.lyx,v 1.5 2005/07/18 09:42:27 jamatos Exp $
-\newline
+\end_layout
+
+\begin_layout Chunk
+
#
-\newline
+\end_layout
+
+\begin_layout Chunk
+
# NOTE: This file was automatically generated from noweb2lyx.lyx using noweb.
-\newline
+\end_layout
+
+\begin_layout Chunk
+
#
-\newline
+\end_layout
+
+\begin_layout Chunk
+
<<Setup variables from user supplied args>>
-\newline
+\end_layout
+
+\begin_layout Chunk
+
<<Subroutines>>
-\newline
+\end_layout
+
+\begin_layout Chunk
+
<<Convert noweb to LyX>>
-\newline
+\end_layout
+
+\begin_layout Chunk
+
@
\end_layout
\begin_layout Section
-
The Noweb file defined
\end_layout
\begin_layout Standard
-
A
\noun on
noweb
\end_layout
\begin_layout LyX-Code
-
@ Here is some documentation.
-\newline
+\end_layout
+
+\begin_layout Chunk
+
+\end_layout
+
+\begin_layout Chunk
+
We can do arbitrary LaTeX code here.
-\newline
+\begin_inset Newline newline
+\end_inset
+
[...
blah blah blah ...]
\end_layout
\begin_layout Standard
-
Code chunks look like this:
\end_layout
\begin_layout LyX-Code
-
<
\begin_inset ERT
status collapsed
-\begin_layout Standard
+\begin_layout Plain Layout
+
{}
\end_layout
\begin_inset ERT
status collapsed
-\begin_layout Standard
+\begin_layout Plain Layout
+
{}
\end_layout
\end_inset
>=
-\newline
+\begin_inset Newline newline
+\end_inset
+
{...
code for the chunk goes here ...}
-\newline
+\begin_inset Newline newline
+\end_inset
+
@
\end_layout
\begin_layout Standard
-
The ``@'' is a necessary delimiter to end the code chunk.
The other form that the ``@'' line takes is as follows:
\end_layout
\begin_layout LyX-Code
-
<
\begin_inset ERT
status collapsed
-\begin_layout Standard
+\begin_layout Plain Layout
+
{}
\end_layout
\begin_inset ERT
status collapsed
-\begin_layout Standard
+\begin_layout Plain Layout
+
{}
\end_layout
\end_inset
>=
-\newline
+\begin_inset Newline newline
+\end_inset
+
{...
code for the chunk ...}
-\newline
+\begin_inset Newline newline
+\end_inset
+
@ %def identifier1 identifier2
\end_layout
\begin_layout Standard
-
In the latter form, we are declaring to
\noun on
noweb
\end_layout
\begin_layout Standard
-
When first tackling this problem, I spoke with members of the LyX team that
knew about the literate programming extensions and reLyX (the LaTeX importing
code).
\end_layout
\begin_layout Standard
-
One of the first ideas was to extend the reLyX code to understand the
\noun on
noweb
\begin_inset Foot
status collapsed
-\begin_layout Standard
-
+\begin_layout Plain Layout
Not the least of these problems is the fact that << is a quote in French.
\end_layout
\begin_layout LyX-Code
-
\backslash
begin{reLyXskip}
-\newline
+\begin_inset Newline newline
+\end_inset
+
{...
LaTeX stuff ...}
-\newline
+\begin_inset Newline newline
+\end_inset
+
\backslash
end{reLyXskip}
\end_layout
\begin_layout Standard
-
then reLyX will copy the surrounded code to the output file verbatim.
Given this, the first part of the translation is easy; we simply have to
copy the code chunks into an intermediate file that surrounds them with
\end_layout
\begin_layout Standard
-
Once reLyX is done with the input file, the problem is reduced to changing
- the code chunks from LyX's LaTeX layout to the Scrap layout.
+ the code chunks from LyX's LaTeX layout to the Chunk layout.
\end_layout
\begin_layout Standard
-
There is one final constraint on
\noun on
noweb2lyx
\begin_inset ERT
status collapsed
-\begin_layout Standard
+\begin_layout Plain Layout
+
[[pre_only]]
\end_layout
\emph default
\bar default
\noun default
+
\color inherit
- and
+and
+\color none
+
\family roman
\series medium
\shape up
\emph off
\bar no
\noun off
-\color none
\begin_inset ERT
status collapsed
-\begin_layout Standard
+\begin_layout Plain Layout
+
[[post_only]]
\end_layout
\emph default
\bar default
\noun default
+
\color inherit
- before we reach the main conversion code.
+before we reach the main conversion code.
\end_layout
\begin_layout Standard
-
With all that preamble out of the way, we now have the basic high-level
outline for our code:
\end_layout
-\begin_layout Scrap
+\begin_layout Chunk
<<Convert noweb to LyX>>=
-\newline
+\end_layout
+
+\begin_layout Chunk
+
if (!$post_only) {
-\newline
+\end_layout
+
+\begin_layout Chunk
+
<<Transform noweb for reLyX>>
-\newline
+\end_layout
+
+\begin_layout Chunk
+
}
-\newline
+\end_layout
+
+\begin_layout Chunk
+
if ((!$pre_only) && (!$post_only)) {
-\newline
+\end_layout
+
+\begin_layout Chunk
+
<<Run reLyX on intermediate file>>
-\newline
+\end_layout
+
+\begin_layout Chunk
+
}
-\newline
+\end_layout
+
+\begin_layout Chunk
+
if (!$pre_only) {
-\newline
+\end_layout
+
+\begin_layout Chunk
+
<<Fix up LyX file>>
-\newline
+\end_layout
+
+\begin_layout Chunk
+
}
-\newline
+\end_layout
+
+\begin_layout Chunk
+
<<Clean up>>
-\newline
+\end_layout
+
+\begin_layout Chunk
+
@
\end_layout
\begin_layout Section
-
Making a file that reLyX can process
\end_layout
\begin_layout Standard
-
In this section, we present the code that performs the task of creating
the intermediate file that reLyX can process, using the algorithm that
we just outlined.
This algorithm is outlined in the code that follows:
\end_layout
-\begin_layout Scrap
+\begin_layout Chunk
+
+\end_layout
+
+\begin_layout Chunk
<<Transform noweb for reLyX>>=
-\newline
+\end_layout
+
+\begin_layout Chunk
+
<<Setup INPUT and OUTPUT>>
-\newline
+\end_layout
+
+\begin_layout Chunk
+
inputline: while(<INPUT>)
-\newline
+\end_layout
+
+\begin_layout Chunk
+
{
-\newline
+\end_layout
+
+\begin_layout Chunk
+
if (/^
\backslash
s*
\backslash
>
\backslash
->=/) { # Beginning of a noweb scrap
-\newline
+>=/) { # Beginning of a noweb chunk
+\end_layout
+
+\begin_layout Chunk
+
<<Read in and output the noweb code chunk>>
-\newline
+\end_layout
+
+\begin_layout Chunk
+
} elsif (/^@
\backslash
s+(.*)/) { # Beginning of a documentation chunk
-\newline
+\end_layout
+
+\begin_layout Chunk
+
print OUTPUT $1; # We do not need the ``@'' part
-\newline
+\end_layout
+
+\begin_layout Chunk
+
} elsif (/
\backslash
[
]
\backslash
]/) { # noweb quoted code
-\newline
+\end_layout
+
+\begin_layout Chunk
+
<<Perform special input quoting of [[var]]>>
-\newline
+\end_layout
+
+\begin_layout Chunk
+
} else {
-\newline
+\end_layout
+
+\begin_layout Chunk
+
print OUTPUT; # Just let the line pass through
-\newline
+\end_layout
+
+\begin_layout Chunk
+
}
-\newline
+\end_layout
+
+\begin_layout Chunk
+
}
-\newline
+\end_layout
+
+\begin_layout Chunk
+
<<Close INPUT and OUTPUT>>
-\newline
+\end_layout
+
+\begin_layout Chunk
+
@
\end_layout
\begin_layout Standard
-
In the code above, we do some pre-processing of the noweb ``[[...]]'' construct.
This avoids some problems with reLyX confusing lists composed of ``[[...]]''
constructs.
\end_layout
-\begin_layout Scrap
+\begin_layout Chunk
<<Perform special input quoting of [[var]]>>=
-\newline
+\end_layout
+
+\begin_layout Chunk
+
s/
\backslash
[
[.+?
\backslash
]{2,}/{$&}/g;
-\newline
+\begin_inset Newline newline
+\end_inset
+
print OUTPUT;
-\newline
+\begin_inset Newline newline
+\end_inset
+
@
\end_layout
\begin_layout Standard
-
While reading in the
\family roman
\series medium
\begin_inset ERT
status collapsed
-\begin_layout Standard
+\begin_layout Plain Layout
+
[[INPUT]]
\end_layout
\emph default
\bar default
\noun default
+
\color inherit
- file, once we have identified a
+file, once we have identified a
\noun on
noweb
\noun default
code chunk, we transform it into a form that is usable by reLyX.
\end_layout
-\begin_layout Scrap
+\begin_layout Chunk
<<Read in and output the noweb code chunk>>=
-\newline
-<<Save the beginning of the scrap to savedScrap>>
-\newline
-<<Concatenate the rest of the scrap>>
-\newline
-<<print out the scrap in a reLyXskip block>>
-\newline
+\end_layout
+
+\begin_layout Chunk
+
+<<Save the beginning of the chunk to savedchunk>>
+\end_layout
+
+\begin_layout Chunk
+
+<<Concatenate the rest of the chunk>>
+\end_layout
+
+\begin_layout Chunk
+
+<<print out the chunk in a reLyXskip block>>
+\end_layout
+
+\begin_layout Chunk
+
@
\end_layout
\begin_layout Subsection
-
File input and output for the pre-processing step
\end_layout
\begin_layout Standard
-
In
\noun on
noweb2lyx
\begin_inset ERT
status collapsed
-\begin_layout Standard
+\begin_layout Plain Layout
+
[[INPUT]]
\end_layout
\emph default
\bar default
\noun default
+
\color inherit
- and
+and
+\color none
+
\family roman
\series medium
\shape up
\emph off
\bar no
\noun off
-\color none
\begin_inset ERT
status collapsed
-\begin_layout Standard
+\begin_layout Plain Layout
+
[[OUTPUT]]
\end_layout
\emph default
\bar default
\noun default
+
\color inherit
- to read and write files.
+to read and write files.
In the code fragment above, we need to read from the input file and write
to a file that will be later transformed by reLyX.
If we are being called only to pre-process the input file, then there is
no need to create a temporary file.
\end_layout
-\begin_layout Scrap
+\begin_layout Chunk
<<Setup INPUT and OUTPUT>>=
-\newline
+\end_layout
+
+\begin_layout Chunk
+
if ($pre_only) {
-\newline
+\end_layout
+
+\begin_layout Chunk
+
&setup_files($input_file, $output_file);
-\newline
+\end_layout
+
+\begin_layout Chunk
+
} else {
-\newline
- $relyx_file = "temp$$";
-\newline
- &setup_files($input_file, $relyx_file);
-\newline
-}
-\newline
-@
\end_layout
-\begin_layout Standard
+\begin_layout Chunk
-This code uses a small perl subroutine,
+ $relyx_file = "temp$$";
+\end_layout
+
+\begin_layout Chunk
+
+ &setup_files($input_file, $relyx_file);
+\end_layout
+
+\begin_layout Chunk
+
+}
+\end_layout
+
+\begin_layout Chunk
+
+@
+\end_layout
+
+\begin_layout Standard
+This code uses a small perl subroutine,
\family roman
\series medium
\shape up
\begin_inset ERT
status collapsed
-\begin_layout Standard
+\begin_layout Plain Layout
+
[[setup_files]]
\end_layout
, which we define below:
\end_layout
-\begin_layout Scrap
+\begin_layout Chunk
<<Subroutines>>=
-\newline
+\end_layout
+
+\begin_layout Chunk
+
sub setup_files {
-\newline
+\end_layout
+
+\begin_layout Chunk
+
my($in, $out) = @_;
-\newline
- open(INPUT, "<$in") || die "Can not read $in: $!
+\end_layout
+
+\begin_layout Chunk
+
+ open(INPUT, "<$in") || die "Cannot read $in: $!
\backslash
n";
-\newline
- open(OUTPUT, ">$out") || die "Can not write $out: $!
+\end_layout
+
+\begin_layout Chunk
+
+ open(OUTPUT, ">$out") || die "Cannot write $out: $!
\backslash
n";
-\newline
+\end_layout
+
+\begin_layout Chunk
+
}
-\newline
+\end_layout
+
+\begin_layout Chunk
+
@ %def setup_files
\end_layout
\begin_layout Subsection
-
Reading in the
\noun on
noweb
\noun default
- scrap
+ chunk
\end_layout
\begin_layout Standard
+After we see the beginning of the chunk, we need to read in and save the
+ rest of the chunk for output.
+\end_layout
-After we see the beginning of the scrap, we need to read in and save the
- rest of the scrap for output.
+\begin_layout Chunk
+
+<<Save the beginning of the chunk to savedchunk>>=
\end_layout
-\begin_layout Scrap
+\begin_layout Chunk
+
+$savedchunk = $_;
+\end_layout
+
+\begin_layout Chunk
-<<Save the beginning of the scrap to savedScrap>>=
-\newline
-$savedScrap = $_;
-\newline
$endLine = "";
-\newline
+\end_layout
+
+\begin_layout Chunk
+
@
\end_layout
-\begin_layout Scrap
+\begin_layout Chunk
-<<Concatenate the rest of the scrap>>=
-\newline
-scrapline: while (<INPUT>) {
-\newline
- last scrapline if /^@
+<<Concatenate the rest of the chunk>>=
+\begin_inset Newline newline
+\end_inset
+
+chunkline: while (<INPUT>) {
+\begin_inset Newline newline
+\end_inset
+
+ last chunkline if /^@
\backslash
s+/;
-\newline
- $savedScrap .= $_;
-\newline
+\begin_inset Newline newline
+\end_inset
+
+ $savedchunk .= $_;
+\begin_inset Newline newline
+\end_inset
+
};
-\newline
+\begin_inset Newline newline
+\end_inset
+
switch: {
-\newline
+\begin_inset Newline newline
+\end_inset
+
if (/^@
\backslash
-s+$/) {$savedScrap .= $_; last switch; }
-\newline
+s+$/) {$savedchunk .= $_; last switch; }
+\begin_inset Newline newline
+\end_inset
+
if (/^@
\backslash
-s+%def.*$/) {$savedScrap .= $_; last switch; }
-\newline
+s+%def.*$/) {$savedchunk .= $_; last switch; }
+\begin_inset Newline newline
+\end_inset
+
if (/^@
\backslash
-s+(.*)$/) {$savedScrap .= "@
+s+(.*)$/) {$savedchunk .= "@
\backslash
n"; $endLine = "$1
\backslash
n"; }
-\newline
+\begin_inset Newline newline
+\end_inset
+
}
-\newline
+\begin_inset Newline newline
+\end_inset
+
@
\end_layout
\begin_layout Subsection
-
-Printing out the scrap
+Printing out the chunk
\end_layout
\begin_layout Standard
-
The final piece of the first pass of the conversion is done by this code.
\end_layout
-\begin_layout Scrap
+\begin_layout Chunk
+
+<<print out the chunk in a reLyXskip block>>=
+\end_layout
+
+\begin_layout Chunk
-<<print out the scrap in a reLyXskip block>>=
-\newline
print OUTPUT "
\backslash
begin{reLyXskip}
\backslash
n";
-\newline
-print OUTPUT $savedScrap;
-\newline
+\end_layout
+
+\begin_layout Chunk
+
+print OUTPUT $savedchunk;
+\end_layout
+
+\begin_layout Chunk
+
print OUTPUT "
\backslash
n
\backslash
n";
-\newline
+\end_layout
+
+\begin_layout Chunk
+
print OUTPUT "$endLine";
-\newline
+\end_layout
+
+\begin_layout Chunk
+
@
\end_layout
\begin_layout Standard
-
Finally, we need to close the
\family roman
\series medium
\begin_inset ERT
status collapsed
-\begin_layout Standard
+\begin_layout Plain Layout
+
[[INPUT]]
\end_layout
\emph default
\bar default
\noun default
+
\color inherit
- and
+and
+\color none
+
\family roman
\series medium
\shape up
\emph off
\bar no
\noun off
-\color none
\begin_inset ERT
status collapsed
-\begin_layout Standard
+\begin_layout Plain Layout
+
[[OUTPUT]]
\end_layout
\emph default
\bar default
\noun default
+
\color inherit
- files.
+files.
\end_layout
-\begin_layout Scrap
+\begin_layout Chunk
<<Close INPUT and OUTPUT>>=
-\newline
+\end_layout
+
+\begin_layout Chunk
+
close(INPUT);
-\newline
+\end_layout
+
+\begin_layout Chunk
+
close(OUTPUT);
-\newline
+\end_layout
+
+\begin_layout Chunk
+
@
\end_layout
\begin_layout Section
-
Running reLyX
\end_layout
\begin_layout Standard
-
In this section, we describe and implement the code that runs reLyX on the
intermediate file
\family roman
\begin_inset ERT
status collapsed
-\begin_layout Standard
+\begin_layout Plain Layout
+
[[relyx_file]]
\end_layout
\end_layout
\begin_layout Subsection
-
Selecting the document class
\end_layout
\begin_layout Standard
-
In order to run reLyX, we need to know the article class of the input document
(to choose the corresponding literate document layout).
For this, we need to parse the intermediate file.
\end_layout
-\begin_layout Scrap
+\begin_layout Chunk
<<Run reLyX on intermediate file>>=
-\newline
+\end_layout
+
+\begin_layout Chunk
+
<<Parse for document class>>
-\newline
+\end_layout
+
+\begin_layout Chunk
+
<<Run reLyX with document class>>
-\newline
+\end_layout
+
+\begin_layout Chunk
+
@
\end_layout
\begin_layout Standard
-
In the code below, you'll see a strange regular expression to search for
the document class.
The reason for this kludge is that without it, we can't run
\begin_inset Foot
status collapsed
-\begin_layout Standard
-
+\begin_layout Plain Layout
reLyX searches for
\backslash
\begin_inset ERT
status collapsed
-\begin_layout Standard
+\begin_layout Plain Layout
+
{}
\end_layout
\begin_inset ERT
status collapsed
-\begin_layout Standard
+\begin_layout Plain Layout
+
{}
\end_layout
on itself and a produce a quite reasonable LyX file.
\end_layout
-\begin_layout Scrap
+\begin_layout Chunk
<<Parse for document class>>=
-\newline
+\end_layout
+
+\begin_layout Chunk
+
open(INPUT, "<$relyx_file") ||
-\newline
- die "Can not read $relyx_file: $!
+\end_layout
+
+\begin_layout Chunk
+
+ die "Cannot read $relyx_file: $!
\backslash
n";
-\newline
+\end_layout
+
+\begin_layout Chunk
+
$class = "article"; # default if none found
-\newline
+\end_layout
+
+\begin_layout Chunk
+
parse: while(<INPUT>) {
-\newline
+\end_layout
+
+\begin_layout Chunk
+
if (/
\backslash
\backslash
docu[m]entclass{(.*)}/) {
-\newline
+\end_layout
+
+\begin_layout Chunk
+
$class = $1;
-\newline
+\end_layout
+
+\begin_layout Chunk
+
last parse;
-\newline
+\end_layout
+
+\begin_layout Chunk
+
}
-\newline
+\end_layout
+
+\begin_layout Chunk
+
}
-\newline
+\end_layout
+
+\begin_layout Chunk
+
close(INPUT);
-\newline
+\end_layout
+
+\begin_layout Chunk
+
@
\end_layout
\begin_layout Subsection
-
Running reLyX with the corresponding literate document layout
\end_layout
\begin_layout Standard
-
Now that we know what the document class ought to be, we do:
\end_layout
-\begin_layout Scrap
+\begin_layout Chunk
<<Run reLyX with document class>>=
-\newline
+\begin_inset Newline newline
+\end_inset
+
$doc_class = "literate-" .
$class;
-\newline
+\begin_inset Newline newline
+\end_inset
+
die "reLyX returned non-zero: $!
\backslash
n"
-\newline
+\begin_inset Newline newline
+\end_inset
+
if (system("reLyX -c $doc_class $relyx_file"));
-\newline
+\begin_inset Newline newline
+\end_inset
+
@
\end_layout
\begin_layout Standard
-
reLyX performs the main bulk of the translation work.
Note that if the ``literate-
\emph on
\end_layout
\begin_layout Section
-
Fixing the reLyX output
\end_layout
\begin_layout Standard
-
We need to perform some post-processing of what reLyX produces in order
to have the best output for our literate document.
The outline of the post-processing steps are:
\end_layout
-\begin_layout Scrap
+\begin_layout Chunk
<<Fix up LyX file>>=
-\newline
+\end_layout
+
+\begin_layout Chunk
+
<<Setup INPUT and OUTPUT for the final output>>
-\newline
+\end_layout
+
+\begin_layout Chunk
+
line: while(<INPUT>)
-\newline
+\end_layout
+
+\begin_layout Chunk
+
{
-\newline
+\end_layout
+
+\begin_layout Chunk
+
<<Fix code chunks in latex layout>>
-\newline
+\end_layout
+
+\begin_layout Chunk
+
<<Fix [[var]] noweb construct>>
-\newline
+\end_layout
+
+\begin_layout Chunk
+
print OUTPUT; # default
-\newline
+\end_layout
+
+\begin_layout Chunk
+
}
-\newline
+\end_layout
+
+\begin_layout Chunk
+
<<Close INPUT and OUTPUT>>
-\newline
+\end_layout
+
+\begin_layout Chunk
+
@
\end_layout
\begin_layout Standard
-
Note that in the perl code that is contained in the
\family roman
\series medium
\begin_inset ERT
status collapsed
-\begin_layout Standard
+\begin_layout Plain Layout
+
[[while(<INPUT>)]]
\end_layout
\emph default
\bar default
\noun default
+
\color inherit
- loop above, the perl construct
+loop above, the perl construct
+\color none
+
\family roman
\series medium
\shape up
\emph off
\bar no
\noun off
-\color none
\begin_inset ERT
status collapsed
-\begin_layout Standard
+\begin_layout Plain Layout
+
[[next line]]
\end_layout
\emph default
\bar default
\noun default
+
\color inherit
- is sufficient to restart the loop.
+is sufficient to restart the loop.
We can use this construct to do some relatively complex parsing of the
reLyX generated file.
\end_layout
\begin_layout Subsection
-
File input and output for the post-processing
\end_layout
\begin_layout Standard
-
Setting up the
\family roman
\series medium
\begin_inset ERT
status collapsed
-\begin_layout Standard
+\begin_layout Plain Layout
+
[[INPUT]]
\end_layout
\emph default
\bar default
\noun default
+
\color inherit
- and
+and
+\color none
+
\family roman
\series medium
\shape up
\emph off
\bar no
\noun off
-\color none
\begin_inset ERT
status collapsed
-\begin_layout Standard
+\begin_layout Plain Layout
+
[[OUTPUT]]
\end_layout
\emph default
\bar default
\noun default
+
\color inherit
- is taken care of by this code:
+is taken care of by this code:
\end_layout
-\begin_layout Scrap
+\begin_layout Chunk
<<Setup INPUT and OUTPUT for the final output>>=
-\newline
+\end_layout
+
+\begin_layout Chunk
+
if ($post_only) {
-\newline
+\end_layout
+
+\begin_layout Chunk
+
&setup_files("$input_file", "$output_file");
-\newline
+\end_layout
+
+\begin_layout Chunk
+
} else {
-\newline
+\end_layout
+
+\begin_layout Chunk
+
&setup_files("$relyx_file.lyx", "$output_file");
-\newline
+\end_layout
+
+\begin_layout Chunk
+
}
-\newline
+\end_layout
+
+\begin_layout Chunk
+
@
\end_layout
\begin_layout Subsection
-
-Making sure the code chunks are in the Scrap layout
+Making sure the code chunks are in the Chunk layout
\end_layout
\begin_layout Standard
-
Now, as we outlined before, the final step is transforming the code-chunks
- which have been put into a LaTeX layout by LyX into the scrap layout.
+ which have been put into a LaTeX layout by LyX into the Chunk layout.
\end_layout
-\begin_layout Scrap
+\begin_layout Chunk
<<Fix code chunks in latex layout>>=
-\newline
+\end_layout
+
+\begin_layout Chunk
+
if (/
\backslash
\backslash
latex latex/) { # Beginning of some latex code
-\newline
+\end_layout
+
+\begin_layout Chunk
+
if (($line = <INPUT>) =~ /^
\backslash
-s*<</) { # code scrap
-\newline
- <<Transform this chunk into layout scrap>>
-\newline
+s*<</) { # code chunk
+\end_layout
+
+\begin_layout Chunk
+
+ <<Transform this chunk into layout chunk>>
+\end_layout
+
+\begin_layout Chunk
+
} else {
-\newline
+\end_layout
+
+\begin_layout Chunk
+
# print the
\backslash
latex latex line + next line
-\newline
+\end_layout
+
+\begin_layout Chunk
+
print OUTPUT "$_$line";
-\newline
+\end_layout
+
+\begin_layout Chunk
+
}
-\newline
+\end_layout
+
+\begin_layout Chunk
+
next line;
-\newline
+\end_layout
+
+\begin_layout Chunk
+
}
-\newline
+\end_layout
+
+\begin_layout Chunk
+
@
\end_layout
\begin_layout Standard
-
When we are sure that we are in a code chunk, we must read in the rest of
- the code chunk and output a scrap layout for it:
+ the code chunk and output a chunk layout for it:
\end_layout
-\begin_layout Scrap
+\begin_layout Chunk
+
+<<Transform this chunk into layout chunk>>=
+\end_layout
-<<Transform this chunk into layout scrap>>=
-\newline
-$savedScrap = "
+\begin_layout Chunk
+
+\end_layout
+
+\begin_layout Chunk
+
+$savedchunk = "
\backslash
\backslash
-layout Scrap
+layout Chunk
\backslash
n
\backslash
n$line";
-\newline
+\begin_inset Newline newline
+\end_inset
+
codeline: while (<INPUT>) {
-\newline
- $savedScrap .= $_;
-\newline
+\begin_inset Newline newline
+\end_inset
+
+ $savedchunk .= $_;
+\begin_inset Newline newline
+\end_inset
+
last codeline if /^@
\backslash
s+/;
-\newline
+\begin_inset Newline newline
+\end_inset
+
};
-\newline
-print OUTPUT $savedScrap;
-\newline
+\begin_inset Newline newline
+\end_inset
+
+print OUTPUT $savedchunk;
+\begin_inset Newline newline
+\end_inset
+
<<Slurp up to the end of the latex layout>>
-\newline
+\begin_inset Newline newline
+\end_inset
+
@
\end_layout
\begin_layout Standard
-
Okay, now we just need to eat the rest of the latex layout.
There should only be a few different types of lines for us to match:
\end_layout
-\begin_layout Scrap
+\begin_layout Chunk
<<Slurp up to the end of the latex layout>>=
-\newline
+\end_layout
+
+\begin_layout Chunk
+
slurp: while (<INPUT>) {
-\newline
+\end_layout
+
+\begin_layout Chunk
+
last slurp if /
\backslash
\backslash
latex /;
-\newline
+\end_layout
+
+\begin_layout Chunk
+
next slurp if /
\backslash
\backslash
newline/;
-\newline
+\end_layout
+
+\begin_layout Chunk
+
next slurp if /^
\backslash
s*$/;
-\newline
+\end_layout
+
+\begin_layout Chunk
+
warn "confused by line: $_";
-\newline
+\end_layout
+
+\begin_layout Chunk
+
}
-\newline
+\end_layout
+
+\begin_layout Chunk
+
@
\end_layout
\begin_layout Subsection
-
Taking care of the
\noun on
noweb
\begin_layout Standard
-
\noun on
noweb
\noun default
when it generates the final LaTeX code.
\end_layout
-\begin_layout Scrap
+\begin_layout Chunk
<<Fix [[var]] noweb construct>>=
-\newline
+\end_layout
+
+\begin_layout Chunk
+
if (/
\backslash
[
]
\backslash
]/) { # special code for [[var]]
-\newline
+\end_layout
+
+\begin_layout Chunk
+
s/
\backslash
[
latex default
\backslash
n/g;
-\newline
+\end_layout
+
+\begin_layout Chunk
+
print OUTPUT;
-\newline
+\end_layout
+
+\begin_layout Chunk
+
next line;
-\newline
+\end_layout
+
+\begin_layout Chunk
+
}
-\newline
+\end_layout
+
+\begin_layout Chunk
+
@
\end_layout
\begin_layout Section
-
Cleaning up intermediate files
\end_layout
\begin_layout Standard
-
The cleanup code is very simple:
\end_layout
-\begin_layout Scrap
+\begin_layout Chunk
<<Clean up>>=
-\newline
+\end_layout
+
+\begin_layout Chunk
+
system("rm -f $relyx_file*") unless ($post_only || $pre_only);
-\newline
+\end_layout
+
+\begin_layout Chunk
+
@
\end_layout
\begin_layout Section
-
User supplied arguments
\end_layout
\begin_layout Standard
-
The
\noun on
noweb2lyx
files in the import pipeline.
\end_layout
-\begin_layout Scrap
+\begin_layout Chunk
<<Setup variables from user supplied args>>=
-\newline
+\end_layout
+
+\begin_layout Chunk
+
&usage() if ($#ARGV < 1); # zero or one argument
-\newline
+\end_layout
+
+\begin_layout Chunk
+
if ($ARGV[0] eq "-pre") {
-\newline
+\end_layout
+
+\begin_layout Chunk
+
&usage unless ($#ARGV == 2);
-\newline
+\end_layout
+
+\begin_layout Chunk
+
$input_file = $ARGV[1]; $output_file = $ARGV[2]; $pre_only = 1;
-\newline
+\end_layout
+
+\begin_layout Chunk
+
} elsif ($ARGV[0] eq "-post") {
-\newline
+\end_layout
+
+\begin_layout Chunk
+
&usage unless ($#ARGV == 2);
-\newline
+\end_layout
+
+\begin_layout Chunk
+
$input_file = $ARGV[1]; $output_file = $ARGV[2]; $post_only = 1;
-\newline
+\end_layout
+
+\begin_layout Chunk
+
} else {
-\newline
+\end_layout
+
+\begin_layout Chunk
+
&usage unless ($#ARGV == 1);
-\newline
+\end_layout
+
+\begin_layout Chunk
+
$input_file = $ARGV[0]; $output_file = $ARGV[1];
-\newline
+\end_layout
+
+\begin_layout Chunk
+
$pre_only = 0; $post_only = 0;
-\newline
+\end_layout
+
+\begin_layout Chunk
+
}
-\newline
+\end_layout
+
+\begin_layout Chunk
+
@ %def input_file output_file pre_only post_only
\end_layout
-\begin_layout Scrap
+\begin_layout Chunk
<<Subroutines>>=
-\newline
+\end_layout
+
+\begin_layout Chunk
+
sub usage() {
-\newline
+\end_layout
+
+\begin_layout Chunk
+
print "Usage: noweb2lyx [-pre | -post] input-file output-file
-\newline
+\end_layout
+
+\begin_layout Chunk
+
+\begin_inset Newline newline
+\end_inset
-\newline
If -pre is specified, only pre-processes the input-file for reLyX.
-\newline
+\begin_inset Newline newline
+\end_inset
+
Similarly, in the case of -post, post-processes reLyX output.
-\newline
+\begin_inset Newline newline
+\end_inset
+
In case of bugs, Email Kayvan Sylvan <kayvan
\backslash
@sylvan.com>.
\backslash
n";
-\newline
+\begin_inset Newline newline
+\end_inset
+
exit;
-\newline
+\begin_inset Newline newline
+\end_inset
+
}
-\newline
+\begin_inset Newline newline
+\end_inset
+
@ %def usage
\end_layout
\begin_layout Section
-
Generating the
\noun on
noweb2lyx
\end_layout
\begin_layout Standard
-
The noweb2lyx script can be tangled from LyX if you set
\family typewriter
\backslash
build_command
\family default
- to call a generic script that always extracts a scrap named
+ to call a generic script that always extracts a chunk named
\family typewriter
build-script
\family default
\end_layout
\begin_layout LyX-Code
-
#!/bin/sh
-\newline
-notangle -Rbuild-script $1 | sh
+\begin_inset Newline newline
+\end_inset
+
+notangle -Rbuild-script $1 | env NOWEB_SOURCE=$1 NOWEB_OUTPUT_DIR=$2 sh
\end_layout
-\begin_layout Scrap
+\begin_layout Chunk
<<build-script>>=
-\newline
+\end_layout
+
+\begin_layout Chunk
+
PREFIX=/usr
-\newline
+\end_layout
+
+\begin_layout Chunk
+
notangle -Rnoweb2lyx.in noweb2lyx.nw > noweb2lyx.in
-\newline
+\end_layout
+
+\begin_layout Chunk
+
sed -e "s=@PERL@=$PREFIX/bin/perl=" noweb2lyx.in > noweb2lyx
-\newline
+\end_layout
+
+\begin_layout Chunk
+
chmod +x noweb2lyx
-\newline
-@
\end_layout
+\begin_layout Chunk
-\begin_layout Standard
+@
+\end_layout
+\begin_layout Standard
+\begin_inset Newpage newpage
+\end_inset
-\newpage
\end_layout
\begin_layout Section*
-
Macros
\end_layout
\begin_layout Standard
-
\family roman
\series medium
\shape up
\bar no
\noun off
\color none
-
\begin_inset ERT
status collapsed
-\begin_layout Standard
+\begin_layout Plain Layout
+
\backslash
nowebchunks
\end_layout
\begin_layout Section*
-
Identifiers
\end_layout
\begin_layout Standard
-
\family roman
\series medium
\shape up
\bar no
\noun off
\color none
-
\begin_inset ERT
status collapsed
-\begin_layout Standard
+\begin_layout Plain Layout
+
\backslash
nowebindex
projects / lyx.git / blobdiff