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var Promise = require('./promise');
var command = require('./command');
var fs = require('./fs');
var error = require('./error');
// Convert a svg file to a pmg
function convertSVGToPNG(source, dest, options) {
if (!fs.existsSync(source)) return Promise.reject(new error.FileNotFoundError({ filename: source }));
return command.spawn('svgexport', [source, dest])
.fail(function(err) {
if (err.code == 'ENOENT') {
err = error.RequireInstallError({
cmd: 'svgexport',
install: 'Install it using: "npm install svgexport -g"'
});
}
throw err;
})
.then(function() {
if (fs.existsSync(dest)) return;
throw new Error('Error converting '+source+' into '+dest);
});
}
// Convert a svg buffer to a png file
function convertSVGBufferToPNG(buf, dest) {
// Create a temporary SVG file to convert
return fs.tmpFile({
postfix: '.svg'
})
.then(function(tmpSvg) {
return fs.writeFile(tmpSvg, buf)
.then(function() {
return convertSVGToPNG(tmpSvg, dest);
});
});
}
// Converts a inline data: to png file
function convertInlinePNG(source, dest) {
if (!/^data\:image\/png/.test(source)) return Promise.reject(new Error('Source is not a PNG data-uri'));
var base64data = source.split('data:image/png;base64,')[1];
var buf = new Buffer(base64data, 'base64');
return fs.writeFile(dest, buf)
.then(function() {
if (fs.existsSync(dest)) return;
throw new Error('Error converting '+source+' into '+dest);
});
}
module.exports = {
convertSVGToPNG: convertSVGToPNG,
convertSVGBufferToPNG: convertSVGBufferToPNG,
convertInlinePNG: convertInlinePNG
};
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