lyx filter
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dockes
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src/filters/rcllyx
Executable file
195
src/filters/rcllyx
Executable file
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#!/bin/sh
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# @(#$Id: rcllyx,v 1.1 2007-01-23 07:14:16 dockes Exp $ (C) 2004 J.F.Dockes
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# There may still be code from Estraier in here:
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#================================================================
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# Estraier: a personal full-text search system
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# Copyright (C) 2003-2004 Mikio Hirabayashi
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#================================================================
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#================================================================
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# rcllyx
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# Convert a lyx file to recoll HTML.
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#
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# We use lyx --export. It was suggested to use untex, but it doesn't give
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# good results on raw lyx (of course, this is not TeX), and exporting to
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# LaTex then using untex doesn't look nice when we can use the native lyx
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# text export.
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# The character encoding of the exported text is defined by the
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# \inputencoding directive in the lyx file header and, in quite an obscure
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# way, by the \language parameter. We use a heuristic to divine the output
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# text encoding and it is guaranteed not to work in all cases. Trials using
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# an intermediary dvi, pdf or ps file gave worse results. This needs
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# improvement. It doesn't even take into account the fact that the language
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# can change inside the doc (does this change the encoding or not ?). To be
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# frank, this is not entirely my fault, the lyx format is a joke.
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#
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# As there is unfortunately no way to define the output file name, we have
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# to use a temporary directory and link the input file in there.
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# set variables
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LANG=C ; export LANG
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LC_ALL=C ; export LC_ALL
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progname="rcllyx"
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# show help message
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if test $# -ne 1 -o "$1" = "--help"
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then
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printf 'Extract lyx text as basic HTML.\n'
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printf 'Usage: %s [infile]\n' "$progname"
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exit 1
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fi
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infile="$1"
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# check the input file existence
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if test ! -f "$infile"
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then
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printf '%s: %s: no such file\n' "$progname" "$infile"
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exit 1
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fi
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iscmd()
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{
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cmd=$1
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case $cmd in
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*/*)
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if test -x $cmd ; then return 0; else return 1; fi ;;
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*)
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oldifs=$IFS; IFS=":"; set -- $PATH; IFS=$oldifs
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for d in $*;do test -x $d/$cmd && return 0;done
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return 1 ;;
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esac
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}
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checkcmds()
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{
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for cmd in $*;do
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if iscmd $cmd
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then
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a=1
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else
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echo $cmd not found 1>&2
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exit 1
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fi
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done
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}
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checkcmds lyx iconv
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# We need a temporary directory
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if test z"$RECOLL_TMPDIR" != z; then
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ttdir=$RECOLL_TMPDIR
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elif test z"$TMPDIR" != z ; then
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ttdir=$TMPDIR
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else
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ttdir=/tmp
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fi
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tmpdir=$ttdir/rcllyx_tmp$$
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mkdir $tmpdir || exit 1
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mkdir $tmpdir/rcllyxtmp || exit 1
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cleanup()
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{
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# Note that we're using a constant part (rcllyxtmp), that hopefully
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# guarantees that we can't do big mistakes here.
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rm -rf $tmpdir/rcllyxtmp
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rmdir $tmpdir
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}
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#trap cleanup EXIT HUP QUIT INT TERM
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workdir=$tmpdir/rcllyxtmp
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case "$infile" in
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*/*) ;;
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*) infile=`pwd`/$infile;;
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esac
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binfile=`basename $infile`
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ln -s "$infile" "$workdir/$binfile" || exit 1
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lyxfile=$workdir/$binfile
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textfile=$workdir/`basename $binfile .lyx`.txt
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#echo binfile: $binfile;echo lyxfile: $lyxfile ; ls -l $lyxfile; echo textfile: $textfile
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# Run lyx --export
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lyx --export text $lyxfile
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# Charset and language
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formatline=`egrep '^\\\lyxformat ' $lyxfile`
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if test -n "$formatline" ; then
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set $formatline
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format=$2
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fi
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charsetline=`egrep '^\\\inputencoding ' $lyxfile`
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if test -n "$charsetline" ; then
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set $charsetline
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charset=$2
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fi
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langline=`egrep '^\\\language ' $lyxfile`
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if test -n "$langline" ; then
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set $langline
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lang=$2
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fi
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#echo format: [$format] charset: [$charset] lang [$lang]
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if test "$format" -ge 249 ; then
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charset=utf-8
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else
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# try to guess the charset from the language: this is in no way guaranteed
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# to work, the logic has built-in inconsistencies even beyond the numerous
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# external ones (what if the ukrainian writer prefers koi8-r ?). This is a
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# joke.
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if test -n "$charset" -o "$charset" = default -o "$charset" = auto ; then
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case "$lang" in
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american|afrikaans|basque|catalan|danish|dutch|english|faeroese|finnish|french|galician|german|icelandic|irish|italian|norwegian|portuguese|spanish|swedish)
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charset=iso-8859-1;;
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czech|german|hungarian|polish|romanian|croatian|slovak|slovene)
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charset=iso-8859-2;;
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esperanto|galician|maltese|Turkish)
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charset=iso-8859-3;;
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estonian|latvian|lithuanian)
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charset=iso-8859-4;;
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bulgarian|byelorussian|macedonian|russian|serbian|ukrainian)
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charset=iso-8859-5;;
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arabic)
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charset=iso-8859-6;;
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greek)
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charset=iso-8859-7;;
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hebrew)
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charset=iso-8859-8;;
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#ISO-8859-9 - Latin 5 Same as 8859-1 except for Turkish instead of
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#Icelandic. ? What is one to do :)
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#ISO-8859-10 - Latin 6
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lappish|nordic|eskimo|inuit|sami)
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charset=iso-8859-10;;
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albanian|german|english|basque|breton|catalan|danish|spanish|estonian|esthonian|faeroese|faroese|finnish|french|frisian|friesian|scottish|goidelic|irish|gaelic|galician|welsh|greenlandic|inuit|icelandic|italian|latin|dutch|norvegian|portuguese|romansch|romansh|friulian|ladin|swedish)
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charset=iso-8859-15;;
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*)
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charset=iso-8859-1;;
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esac
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fi
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fi
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if test -n "$charset" ; then
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inputcmd="iconv -f $charset -t UTF-8 -c -s"
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else
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inputcmd=cat
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fi
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#echo inputcmd: [$inputcmd]
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cat <<EOF
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<html>
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<head>
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<title>$title</title>
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<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
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</head>
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<body>
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<pre>
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EOF
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$inputcmd < $textfile
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cat <<EOF
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</pre>
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</body>
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</html>
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EOF
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