toodt.js

// abc2svg - toodt.js - ABC translation to ODT+SVG
//
// Copyright (C) 2017-2018 Jean-Francois Moine
//
// This file is part of abc2svg.
//
// abc2svg is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// abc2svg is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with abc2svg.  If not, see <http://www.gnu.org/licenses/>.

// This script is a backend which permits to generate (ODT+SVG)
// instead of the (XHTML+SVG) default of the batch script 'abc2svg'.
//
// Usage:
// - creation of a .odt file (default: ./abc.odt)
//
//	abc2svg toodt.js some_ABC_file.abc [-o output_file]
//
//  (this script must appear immediately after the command)
//
// Constraints:
// This module runs only with the nodeJS script 'abc2svg' and asks for
// the npm module 'jszip' to be installed.

    var	margins, page_size, page_type, page_mid, page_right,
	header, footer, headerfont, footerfont, in_p, t_info, title,
	style = '',
	content = '',
	imgs = '',
	seq = 0,
	outfn = 'abc.odt',
	fs = require('fs'),		// file system
	JSZip = require('jszip'),	// Zip
	zip = new JSZip(),
	sep = require('path').sep;	// '/' or '\'

// get the command line arguments
function get_args(args) {
    var	a, i

	if (!args)			// compatibility
		return

	for (i = 0; i < args.length; i++) {
		a = args[i]
		if (a == '-o') {
			outfn = args[i + 1];
			args.splice(i++, 2)
		}
	}
}

// convert a pixel value into page unit
function set_unit(p) {
	if (typeof p == "string")
		return p
	if (page_type[0] == 'L')
		return (p / 96).toFixed(2) + 'in'
	return (p / 37.8).toFixed(2) + 'cm'
}

// output a header or a footer
function gen_hf(type, stype, str) {
    var	c, i, res_left,
	j = 0,
	res = '<style:' + type + '>\n\
<text:p text:style-name="' + stype + '\">'

	if (str[0] == '"')
		str = str.slice(1, -1)
	if (str.indexOf('\t') < 0)		// if no TAB
		str = '\t' + str		// center

	for (i = 0; i < str.length; i++) {
		c = str[i]
		switch (c) {
		case '\t':
			if (j < 2) {
				res += '<text:tab/>';
				j++		// next column
			}
			continue
		case '\\':			// hope '\n'
			res += '</text:p>\n\
<text:p text:style-name="' + stype + '\">';
			j = 0;
			i++
			continue
		default:
			res += c
			continue
		case '$':
			break
		}
		c = str[++i]
		switch (c) {
		case 'd':
			t = abc.get_fname();
			res += fs.statSync(t).ctime.toLocaleString()
			break
		case 'D':
			res += (new Date()).toLocaleString()
			break
		case 'F':
			res += abc.get_fname()
			break
		case 'I':
			c = str[++i]
		case 'T':
			t = abc.info()[c]
			if (t) {
				t_info = '\
  <text:variable-decls>\n\
   <text:variable-decl office:value-type="string" text:name="tinfo"/>\n\
  </text:variable-decls>\n\
<text:p text:style-name="P">\n';
				in_p = true;
				res += '\
<text:variable-get text:name="tinfo">any</text:variable-get>'
			}
			break
		case 'P':
			res += '<text:page-number/>'
			break
		case 'V':
			res += "abc2svg-" + abc2svg.version
			break
		}
	}
	res = res + '</text:p>\n\
</style:' + type + '>\n';

	// handle page even/odd
	i = res.indexOf('page-number/>')
	if (i <= 0)
		return res
	c = res[i + 13]
	if (c != '0' && c != '1')
		return res
	res_left = res.replace('<style:' + type, '<style:' + type + '-left')
		.replace('</style:' + type, '</style:' + type + '-left');
	res = res.replace('<text:page-number/>0', '')
		.replace('page-number/>1', 'page-number/>');
	res_left = res_left.replace('<text:page-number/>1', '')
		.replace('page-number/>0', 'page-number/>')
	return res + res_left
} // gen_hf()

// create the odt file
function odt_out() {
    var	cdate = (new Date()).toUTCString();

	// content.xml
	if (in_p) {
		in_p = false;
		content += '</text:p>\n'
	}
	zip.file('content.xml',
		'<?xml version="1.0" encoding="UTF-8"?>\n\
<office:document-content\
 xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0"\
 xmlns:style="urn:oasis:names:tc:opendocument:xmlns:style:1.0"\
 xmlns:text="urn:oasis:names:tc:opendocument:xmlns:text:1.0"\
 xmlns:table="urn:oasis:names:tc:opendocument:xmlns:table:1.0"\
 xmlns:draw="urn:oasis:names:tc:opendocument:xmlns:drawing:1.0"\
 xmlns:fo="urn:oasis:names:tc:opendocument:xmlns:xsl-fo-compatible:1.0"\
 xmlns:xlink="http://www.w3.org/1999/xlink"\
 xmlns:dc="http://purl.org/dc/elements/1.1/"\
 xmlns:meta="urn:oasis:names:tc:opendocument:xmlns:meta:1.0"\
 xmlns:number="urn:oasis:names:tc:opendocument:xmlns:datastyle:1.0"\
 xmlns:svg="urn:oasis:names:tc:opendocument:xmlns:svg-compatible:1.0"\
 xmlns:ooo="http://openoffice.org/2004/office"\
 xmlns:ooow="http://openoffice.org/2004/writer"\
 xmlns:xsd="http://www.w3.org/2001/XMLSchema"\
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"\
 office:version="1.1">\n\
<office:font-face-decls>\n\
 <style:font-face style:name="abc2svg" svg:font-family="abc2svg">\n\
  <svg:font-face-src>\n\
   <svg:font-face-uri xlink:href="Fonts/abc2svg.ttf" xlink:type="simple"/>\n\
  </svg:font-face-src>\n\
 </style:font-face>\n\
</office:font-face-decls>\n\
<office:body>\n\
 <office:text>\n' +
		(t_info || '') +
		content + '\
 </office:text>\n\
</office:body>\n\
</office:document-content>\n',
		{ compression: "DEFLATE" });

	// Fonts/abc2svg.ttf
	zip.file('Fonts/abc2svg.ttf',
		fs.readFileSync(__dirname + sep + 'abc2svg.ttf'),
		{ compression: "STORE" });

// manifest.rdf (?)

	// META-INF/manifest.xml
//fixme: which mimetype for ttf?
// application/x-font-ttf application/font-sfnt font/ttf
	zip.file('META-INF/manifest.xml',
		'<?xml version="1.0" encoding="UTF-8"?>\n\
<!DOCTYPE manifest:manifest PUBLIC "-//OpenOffice.org//DTD Manifest 1.0//EN" "Manifest.dtd">\n\
<manifest:manifest xmlns:manifest="urn:oasis:names:tc:opendocument:xmlns:manifest:1.0">\n\
 <manifest:file-entry manifest:media-type="application/vnd.oasis.opendocument.text" manifest:full-path="/"/>\n\
 <manifest:file-entry manifest:media-type="application/x-font-ttf" manifest:full-path="Fonts/abc2svg.ttf"/>\n\
 <manifest:file-entry manifest:media-type="text/xml" manifest:full-path="content.xml"/>\n\
 <manifest:file-entry manifest:media-type="text/xml" manifest:full-path="styles.xml"/>\n\
 <manifest:file-entry manifest:media-type="text/xml" manifest:full-path="meta.xml"/>\n\
 <manifest:file-entry manifest:media-type="text/xml" manifest:full-path="settings.xml"/>\n' +
		imgs +
'</manifest:manifest>\n',
		{ compression: "DEFLATE" });

	// meta.xml
	zip.file('meta.xml',
		'<?xml version="1.0" encoding="UTF-8"?>\n\
<office:document-meta\
 xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0"\
 xmlns:xlink="http://www.w3.org/1999/xlink"\
 xmlns:dc="http://purl.org/dc/elements/1.1/"\
 xmlns:meta="urn:oasis:names:tc:opendocument:xmlns:meta:1.0"\
 xmlns:ooo="http://openoffice.org/2004/office"\
 office:version="1.1">\n\
<office:meta>\n\
<meta:generator>abc2svg toodt.js</meta:generator>\n\
<dc:creator>user</dc:creator>\n\
<meta:creation-date>' + cdate + '\n\
</meta:creation-date>\n\
<dc:date>' + cdate + '\n\
</dc:date>\n\
</office:meta>\n\
</office:document-meta>\n',
		{ compression: "DEFLATE" });

	// Pictures/* done in svg_out

	// settings.xml
	zip.file('settings.xml',
		'<?xml version="1.0" encoding="UTF-8"?>\n\
<office:document-settings office:version="1.1"\
 xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0"\
 xmlns:xlink="http://www.w3.org/1999/xlink"\
 xmlns:config="urn:oasis:names:tc:opendocument:xmlns:config:1.0"\
 xmlns:ooo="http://openoffice.org/2004/office" />\n',
		{ compression: "DEFLATE" });

	// styles.xml
	zip.file('styles.xml',
		'<?xml version="1.0" encoding="UTF-8"?>\n\
<office:document-styles\
 xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0"\
 xmlns:style="urn:oasis:names:tc:opendocument:xmlns:style:1.0"\
 xmlns:text="urn:oasis:names:tc:opendocument:xmlns:text:1.0"\
 xmlns:table="urn:oasis:names:tc:opendocument:xmlns:table:1.0"\
 xmlns:draw="urn:oasis:names:tc:opendocument:xmlns:drawing:1.0"\
 xmlns:fo="urn:oasis:names:tc:opendocument:xmlns:xsl-fo-compatible:1.0"\
 xmlns:xlink="http://www.w3.org/1999/xlink"\
 xmlns:dc="http://purl.org/dc/elements/1.1/"\
 xmlns:meta="urn:oasis:names:tc:opendocument:xmlns:meta:1.0"\
 xmlns:number="urn:oasis:names:tc:opendocument:xmlns:datastyle:1.0"\
 xmlns:svg="urn:oasis:names:tc:opendocument:xmlns:svg-compatible:1.0"\
 xmlns:ooo="http://openoffice.org/2004/office"\
 xmlns:ooow="http://openoffice.org/2004/writer"\
 office:version="1.1">\n\
 <office:styles>\n\
  <style:default-style style:family="paragraph">\n\
   <style:paragraph-properties fo:orphans="2" fo:widows="2"/>\n\
   <style:text-properties style:use-window-font-color="true"\
 style:font-name="Liberation Serif" fo:font-size="12pt"/>\n\
  </style:default-style>\n\
 <style:style style:name="Standard" style:family="paragraph" style:class="text"/>\n\
 <style:style style:name="P" style:family="paragraph"\
 style:parent-style-name="Standard"/>\n\
 <style:style style:name="Pbr" style:family="paragraph"\
 style:parent-style-name="Standard">\n\
  <style:paragraph-properties fo:break-before="page"/>\n\
 </style:style>\n\
<style:style style:name="Header" style:family="paragraph"\
 style:parent-style-name="Standard" style:class="extra">\n\
 <style:paragraph-properties>\n\
  <style:tab-stops>\n\
   <style:tab-stop style:position="' + page_mid + '" style:type="center"/>\n\
   <style:tab-stop style:position="' + page_right + '" style:type="right"/>\n\
  </style:tab-stops>\n\
 </style:paragraph-properties>\n\
 <style:text-properties ' + headerfont + '/>\n\
</style:style>\n\
<style:style style:name="Footer" style:family="paragraph"\
 style:parent-style-name="Standard" style:class="extra">\n\
 <style:paragraph-properties>\n\
  <style:tab-stops>\n\
   <style:tab-stop style:position="' + page_mid + '" style:type="center"/>\n\
   <style:tab-stop style:position="' + page_right + '" style:type="right"/>\n\
  </style:tab-stops>\n\
 </style:paragraph-properties>\n\
 <style:text-properties ' + footerfont + '/>\n\
</style:style>\n\
 </office:styles>\n\
 <office:automatic-styles>\n\
 <style:style style:family="graphic" style:name="graphic1" style:display-name="graphic1" style:parent-style-name="Graphics">\n\
  <style:graphic-properties style:wrap="run-through" style:run-through="foreground" style:vertical-pos="top" style:vertical-rel="baseline"/>\n\
 </style:style>\n\
 <style:page-layout style:name="Standard">\n\
  <style:page-layout-properties ' + margins + '\
 fo:margin-left="1.5cm" fo:margin-right="1.5cm"/>\n\
 </style:page-layout>\n\
 </office:automatic-styles>\n\
 <office:master-styles>\n\
  <style:master-page style:name="Standard" style:page-layout-name="Standard">\n' +
	(header || '') +
	(footer || '') + '\
  </style:master-page>\n\
 </office:master-styles>\n\
</office:document-styles>',
		{ compression: "DEFLATE" });

// - generate the ODT file
	zip	.generateNodeStream({streamFiles:true})
		.pipe(fs.createWriteStream(outfn))
		.on('finish', function () {
			console.log(outfn + ' created')
		})
}

abc2svg.abort = function(e) {
	abc.blk_flush();
	if (typeof abc2svg.printErr == 'function')
		abc2svg.printErr(e.message + "\n*** Abort ***\n" + e.stack)
	else
		content += "<text:p>" + e.message +
			"\n*** Abort ***\n" + e.stack + "</text:p>\n";
	odt_out();
	abc2svg.quit()
}

// convert a CSS font definition (in pixels) to ODT (in points)
function def_font(font) {
    var	ws = '',
	css_font = abc.style_font(abc.cfmt()[font]),
	r = css_font.match(/font-family:(.+?); (.*)font-size:(.+)px/)

// r[2] may be empty or
// font-weight:bold, font-style:italic or font-style:oblique
	if (r[2])
		ws = r[2].replace(/(font-.+?):(.+?);/g,
			'fo:$1="$2"')
	return 'style:font-name="' + r[1] + '" ' + ws +
		'fo:font-size="' + (r[3] * 72 / 96).toFixed(1) + 'pt"'
}

function svg_out(str) {
    var	img, r, w, h,
	cfmt = abc.cfmt()

	switch (str.slice(0, 4)) {
	case '<svg':

		// get the first header/footer
		if (header == undefined) {
			r = cfmt.header;
			header = r ? gen_hf("header", "Header", r) : '';
			headerfont = def_font("headerfont")
		}
		if (footer == undefined) {
			r = cfmt.footer;
			footer = r ? gen_hf("footer", "Footer", r) : '';
			footerfont = def_font("footerfont")
		}

		// save the image
		img = 'Pictures/abc' + (++seq).toString() + '.svg';
		zip.file(img, str, { compression: "DEFLATE" });

		// it is part of the document
		imgs +='\
<manifest:file-entry manifest:media-type="image/svg+xml"\
 manifest:full-path="' + img + '"/>\n';

		// insert in the document content
		r = str.slice(0, 200).match(/.*width="(.*?)px" height="(.*?)px"/);
		w = r[1] / 96;		// convert pixel to inch
		h = r[2] / 96;
		if (!in_p) {
			in_p = true;
			content += '<text:p text:style-name="P">\n'
		}
		content += '<draw:frame text:anchor-type="as-char"\
 draw:z-index="0" draw:style-name="graphic1"\
 svg:width="' + w.toFixed(2) + 'in" svg:height="' + h.toFixed(2) + 'in">\
<draw:image xlink:href="' + img + '"\
 xlink:type="simple" xlink:show="embed" xlink:actuate="onLoad"/>\
</draw:frame>\n';
		break
	case '<div':		// start of block or header/footer or page break
		if (in_p) {
			in_p = false;
			content += '</text:p>\n'
		}
		if (str.indexOf('newpage') > 0) {
			content += '<text:p text:style-name="Pbr">\n';
			in_p = true
		}
		break
	case '</di':				// end of block
		if (in_p) {
			in_p = false;
			content += '</text:p>\n'
		}
		break
//fixme: markup - more tags to be added
	default:
		if (in_p) {
			in_p = false;
			content += '</text:p>\n'
		}
		content += str.replace(/  |<p|<\/p|<br\/>/g, function(c) {
			switch (c) {
			case '  ': return '  '		// space + nbspace
			case '<p': return '<text:p'
			case '</p': return '</text:p'
			case '<br/>': return '<text:line-break/>'
			}
		})
		break
	}

	// if header/footer with $T, define the variable
	if (t_info && in_p) {
	    var	title2 = abc.info().T

		if (title2)			// extract the main title
			title2 = title2.split('\n', 1)[0]
		if (title2 && title2 != title) {
			title = title2;
			content += '<text:variable-set \
text:display="none" text:formula="ooow:' + title + '" \
office:value-type="string" \
office:string-value="' +
				title + '" text:name="tinfo"/>\n'
		}
	}
}

// entry point from cmdline
abc2svg.abc_init = function(args) {
	console.log('ODT generation started');

	get_args(args);

	// generate mimetype which is the first item and without compression
	zip.file('mimetype',
		'application/vnd.oasis.opendocument.text',
		{ compression: "STORE" });

	// define some functions in the Abc object
	abc.tosvg("toodt", "\
%%fullsvg 1\n\
%%printmargin 1.5cm\n\
%%musicfont abc2svg")

	// get the page parameters
	user.img_out = function(str) {
	    var cfmt = abc.cfmt(),
		pw = cfmt.pagewidth;

		// page size
		if (pw > 800) {
			page_type = 'Letter';
			page_size = 'fo:page-width="8.5in" fo:page-height="11in"';
			page_mid = '3.66in';	// with margin = 1.5cm = 0.59in
			page_right = '7.32in'
		} else {
			page_type = 'A4';
			page_size = 'fo:page-width="21cm" fo:page-height="29.7cm"';
			page_mid = '9cm';	// with margin 1.5cm
			page_right = '18cm'
		}

		// top and bottom margins default = 1cm
		margins = 'fo:margin-top="' +
			set_unit(cfmt.topmargin || 37.8) +
			'" fo:margin-bottom="' +
			set_unit(cfmt.botmargin || 37.8) + '"';

		// output the first generated string
		svg_out(str);

		// change the output function
		user.img_out = svg_out
	}

	user.page_format = true
}

abc2svg.abc_end = function() {
	odt_out()
}