#!/bin/sh
CPWD="$(dirname "$(realpath "$0")")/"

cd "$CPWD"

### Settings
DOCBOOKBASE="/usr/share/xml/docbook/stylesheet/docbook-xsl-ns"
UPURL="ccr@tnsp.org:public_html/ggrtf"
TFPATH="${CPWD}../"
SRCSGML="manual.sgml"
SRCXML="manual.xml"
SRCFO="manual.fo"
HTMLPATH="html"
HTMLFILE="${HTMLPATH}/manual.html"
PDFFILE="manual.pdf"
XSLTPARAMS="--stringparam html.stylesheet manual.css"

EXAMPLETFRC_SRC="${TFPATH}example-tfrc.txt"
EXAMPLETFRC_DST="example-tfrc-escaped.txt"

### Get paths, if available
echo "* Initialization"
CONVERT="$(which convert)"
PNMTOPS="$(which pnmtops)"
GIFTOPNM="$(which giftopnm)"
TIDY="$(which tidy)"
XSLTPROC="$(which xsltproc)"
FOP="$(which fop)"
CATALOGS1="${DOCBOOKBASE}/xhtml/chunk.xsl"
CATALOGS2="${DOCBOOKBASE}/xhtml/docbook.xsl"
CATALOGS3="${DOCBOOKBASE}/fo/docbook.xsl"


### Check for locally installed FOP
echo -n "* Checking for FOP .. "
if test -n "$FOP" -a -x "$FOP"; then
	echo "$FOP"
elif test -x "$HOME/tf/docs/fop/fop"; then
	FOP="$HOME/tf/docs/fop/fop"
	echo "$FOP"
else
	echo "no"
fi

### Convert images
echo "* Checking for image to EPS converting utilities ..."
if test -n "$CONVERT" && test -x "$CONVERT"; then
	echo "** GraphicsMagic/ImageMagick convert found"
	for i in *.gif; do
		TOUTFILE="$(echo "$i" | sed "s/.gif/.eps/")"
		echo " - $i -> $TOUTFILE"
		$CONVERT "$i" "$TOUTFILE"
	done
elif test -n "$PNMTOPS" && test -x "$PNMTOPS" && test -n "$GIFTOPNM" && test -x "$GIFTOPNM"; then
	echo "** NetPBM tools found"
	for i in *.gif; do
		TOUTFILE="$(echo "$i" | sed "s/.gif/.eps/")"
		echo " - $i -> $TOUTFILE"
		$GIFTOPNM "$i" | $PNMTOPS -scale=0.5 -noturn > "$TOUTFILE"
	done
else
	echo "*** WARNING! No supported image conversion tools found, not converting images."
	echo "*** This may cause some document format conversions to fail or produce errors."
fi


### Check that we have xsltproc installed for DocBook XML processing
if test -n "$XSLTPROC" && test -x "$XSLTPROC"; then
	echo "* xsltproc found, good... testing for DocBook XML stuff .."
	if test -e "$CATALOGS1"; then
		echo "  * $CATALOGS1 found."
	else
		echo "*** $CATALOGS1 not found!"
		exit 1
	fi
	if test -e "$CATALOGS2"; then
		echo "  * $CATALOGS2 found."
	else
		echo "*** $CATALOGS2 not found!"
		exit 1
	fi
	if test -e "$CATALOGS3"; then
		echo "  * $CATALOGS3 found."
	else
		echo "*** $CATALOGS3 not found!"
		exit 1
	fi
else
	echo "*** ERROR! Could not find xsltproc! You need xsltproc and the"
	echo "*** DocBook XML suite (with XSL stylesheets) to be able to"
	echo "*** generate the documentation!"
	exit 1
fi


### Generate escaped version of example-tfrc
perl -pe 's@&@&amp;@g;s@<@&lt;@g;s@>@&gt;@g' < "$EXAMPLETFRC_SRC" > "$EXAMPLETFRC_DST"


### Generate kludge-normalized XML from the DocBook SGML source
echo "* Running tfdoc .."
( perl -w tfdoc.pl "$TFPATH" < "$SRCSGML" | perl -w normalizeml.pl > "$SRCXML" ) || exit 1


### Generate HTML files
echo "* HTML"
if test -e "$HTMLPATH"; then
	rm -fr "$HTMLPATH"
fi
mkdir -p "$HTMLPATH"

if test -d "$HTMLPATH"; then
	cp *.css *.png *.gif "$HTMLPATH" && cd "$HTMLPATH" && $XSLTPROC $XSLTPARAMS "$CATALOGS1" "../$SRCXML"
	cd "$CPWD"
	
	if $XSLTPROC $XSLTPARAMS "$CATALOGS2" "$SRCXML" > "$HTMLFILE"; then
		echo "  * Transform successful."
	else
		echo "*** ERROR! $XSLTPROC failed. Quitting on fatal error."
		echo "*** Check $SRCXML for errors."
		exit 2
	fi

	echo "  * Checking for HTML Tidy ..."
	if test -n "$TIDY" && test -x "$TIDY"; then
		echo "** Found, cleaning up the mess by DocBook .."
		if $TIDY -q -w 512 -utf8 -asxhtml -i -m $HTMLPATH/*.html "$HTMLFILE"; then
			echo "** Tidying process successful."
		fi
	else
		echo "*** WARNING! HTML tidy not found! To get better HTML output,"
		echo "*** please install HTML tidy (http://tidy.sourceforge.net/)"
	fi
fi


### Generate PDF
rm -f "$PDFFILE"
if test -n "$FOP" && test -x "$FOP" && test -e "$SRCXML"; then
	echo "* fop found, trying to generate PDF .."
	$XSLTPROC -o "$SRCFO" "$CATALOGS3" "$SRCXML" && \
	$FOP -pdf "$PDFFILE" -fo "$SRCFO"
else
	echo "* PDF requirements not satisfied."
fi

## Remove temporary files
#rm -f "$SRCXML"


## Upload
do_upload()
{
	rsync -vptog --bwlimit=500 -e ssh "$@"
}

if test "x$1" = "x--upload"; then
	do_upload $HTMLPATH/* manual.css "$UPURL/html/"
	do_upload "$PDFFILE" "$UPURL"
	do_upload "$HOME/bin/tf5" "$UPURL/tf5.sh"
fi