122 lines
2.8 KiB
JavaScript
122 lines
2.8 KiB
JavaScript
"use strict";
|
|
|
|
var Readable = require('stream').Readable;
|
|
|
|
var QR = require('./qr-base').QR;
|
|
var png = require('./png');
|
|
var vector = require('./vector');
|
|
|
|
var fn_noop = function() {};
|
|
|
|
var BITMAP_OPTIONS = {
|
|
parse_url: false,
|
|
ec_level: 'M',
|
|
size: 5,
|
|
margin: 4,
|
|
customize: null
|
|
};
|
|
|
|
var VECTOR_OPTIONS = {
|
|
parse_url: false,
|
|
ec_level: 'M',
|
|
margin: 1,
|
|
size: 0
|
|
};
|
|
|
|
function get_options(options, force_type) {
|
|
if (typeof options === 'string') {
|
|
options = { 'ec_level': options }
|
|
} else {
|
|
options = options || {};
|
|
}
|
|
var _options = {
|
|
type: String(force_type || options.type || 'png').toLowerCase()
|
|
};
|
|
|
|
var defaults = _options.type == 'png' ? BITMAP_OPTIONS : VECTOR_OPTIONS;
|
|
|
|
for (var k in defaults) {
|
|
_options[k] = k in options ? options[k] : defaults[k];
|
|
}
|
|
|
|
return _options;
|
|
}
|
|
|
|
function qr_image(text, options) {
|
|
options = get_options(options);
|
|
|
|
var matrix = QR(text, options.ec_level, options.parse_url);
|
|
var stream = new Readable();
|
|
stream._read = fn_noop;
|
|
|
|
switch (options.type) {
|
|
case 'svg':
|
|
case 'pdf':
|
|
case 'eps':
|
|
process.nextTick(function() {
|
|
vector[options.type](matrix, stream, options.margin, options.size);
|
|
});
|
|
break;
|
|
case 'svgpath':
|
|
// deprecated, use svg_object method
|
|
process.nextTick(function() {
|
|
var obj = vector.svg_object(matrix, options.margin, options.size);
|
|
stream.push(obj.path);
|
|
stream.push(null);
|
|
});
|
|
break;
|
|
case 'png':
|
|
default:
|
|
process.nextTick(function() {
|
|
var bitmap = png.bitmap(matrix, options.size, options.margin);
|
|
if (options.customize) {
|
|
options.customize(bitmap);
|
|
}
|
|
png.png(bitmap, stream);
|
|
});
|
|
}
|
|
|
|
return stream;
|
|
}
|
|
|
|
function qr_image_sync(text, options) {
|
|
options = get_options(options);
|
|
|
|
var matrix = QR(text, options.ec_level, options.parse_url);
|
|
var stream = [];
|
|
var result;
|
|
|
|
switch (options.type) {
|
|
case 'svg':
|
|
case 'pdf':
|
|
case 'eps':
|
|
vector[options.type](matrix, stream, options.margin, options.size);
|
|
result = stream.filter(Boolean).join('');
|
|
break;
|
|
case 'png':
|
|
default:
|
|
var bitmap = png.bitmap(matrix, options.size, options.margin);
|
|
if (options.customize) {
|
|
options.customize(bitmap);
|
|
}
|
|
png.png(bitmap, stream);
|
|
result = Buffer.concat(stream.filter(Boolean));
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
function svg_object(text, options) {
|
|
options = get_options(options, 'svg');
|
|
|
|
var matrix = QR(text, options.ec_level);
|
|
return vector.svg_object(matrix, options.margin);
|
|
}
|
|
|
|
module.exports = {
|
|
matrix: QR,
|
|
image: qr_image,
|
|
imageSync: qr_image_sync,
|
|
svgObject: svg_object
|
|
};
|