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Add keepXmp and withXmp for control over output XMP metadata #4416
This commit is contained in:
Thibaut Patel
committed by
Lovell Fuller
Lovell Fuller
parent
df5454e7dc
commit
4e3f3792ad
@@ -1100,6 +1100,170 @@ describe('Image metadata', function () {
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assert.strictEqual(exif2.Image.Software, 'sharp');
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});
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describe('XMP metadata tests', function () {
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it('withMetadata preserves existing XMP metadata from input', async () => {
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const data = await sharp(fixtures.inputJpgWithIptcAndXmp)
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.resize(320, 240)
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.withMetadata()
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.toBuffer();
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const metadata = await sharp(data).metadata();
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assert.strictEqual('object', typeof metadata.xmp);
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assert.strictEqual(true, metadata.xmp instanceof Buffer);
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assert.strictEqual(true, metadata.xmp.length > 0);
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// Check that XMP starts with the expected XML declaration
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assert.strictEqual(metadata.xmp.indexOf(Buffer.from('<?xpacket begin="')), 0);
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});
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it('keepXmp preserves existing XMP metadata from input', async () => {
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const data = await sharp(fixtures.inputJpgWithIptcAndXmp)
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.resize(320, 240)
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.keepXmp()
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.toBuffer();
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const metadata = await sharp(data).metadata();
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assert.strictEqual('object', typeof metadata.xmp);
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assert.strictEqual(true, metadata.xmp instanceof Buffer);
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assert.strictEqual(true, metadata.xmp.length > 0);
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// Check that XMP starts with the expected XML declaration
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assert.strictEqual(metadata.xmp.indexOf(Buffer.from('<?xpacket begin="')), 0);
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});
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it('withXmp with custom XMP replaces existing XMP', async () => {
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const customXmp = '<?xml version="1.0"?><x:xmpmeta xmlns:x="adobe:ns:meta/"><rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"><rdf:Description rdf:about="" xmlns:dc="http://purl.org/dc/elements/1.1/"><dc:creator><rdf:Seq><rdf:li>Test Creator</rdf:li></rdf:Seq></dc:creator><dc:title><rdf:Alt><rdf:li xml:lang="x-default">Test Title</rdf:li></rdf:Alt></dc:title></rdf:Description></rdf:RDF></x:xmpmeta>';
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const data = await sharp(fixtures.inputJpgWithIptcAndXmp)
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.resize(320, 240)
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.withXmp(customXmp)
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.toBuffer();
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const metadata = await sharp(data).metadata();
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assert.strictEqual('object', typeof metadata.xmp);
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assert.strictEqual(true, metadata.xmp instanceof Buffer);
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// Check that the XMP contains our custom content
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const xmpString = metadata.xmp.toString();
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assert.strictEqual(true, xmpString.includes('Test Creator'));
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assert.strictEqual(true, xmpString.includes('Test Title'));
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});
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it('withXmp with custom XMP buffer on image without existing XMP', async () => {
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const customXmp = '<?xml version="1.0"?><x:xmpmeta xmlns:x="adobe:ns:meta/"><rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"><rdf:Description rdf:about="" xmlns:dc="http://purl.org/dc/elements/1.1/"><dc:description><rdf:Alt><rdf:li xml:lang="x-default">Added via Sharp</rdf:li></rdf:Alt></dc:description></rdf:Description></rdf:RDF></x:xmpmeta>';
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const data = await sharp(fixtures.inputJpg)
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.resize(320, 240)
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.withXmp(customXmp)
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.toBuffer();
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const metadata = await sharp(data).metadata();
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assert.strictEqual('object', typeof metadata.xmp);
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assert.strictEqual(true, metadata.xmp instanceof Buffer);
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// Check that the XMP contains our custom content
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const xmpString = metadata.xmp.toString();
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assert.strictEqual(true, xmpString.includes('Added via Sharp'));
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});
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it('withXmp with valid XMP metadata for different image formats', async () => {
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const customXmp = '<?xml version="1.0"?><x:xmpmeta xmlns:x="adobe:ns:meta/"><rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"><rdf:Description rdf:about="" xmlns:dc="http://purl.org/dc/elements/1.1/"><dc:subject><rdf:Bag><rdf:li>test</rdf:li><rdf:li>metadata</rdf:li></rdf:Bag></dc:subject></rdf:Description></rdf:RDF></x:xmpmeta>';
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// Test with JPEG output
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const jpegData = await sharp(fixtures.inputJpg)
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.resize(100, 100)
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.jpeg()
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.withXmp(customXmp)
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.toBuffer();
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const jpegMetadata = await sharp(jpegData).metadata();
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assert.strictEqual('object', typeof jpegMetadata.xmp);
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assert.strictEqual(true, jpegMetadata.xmp instanceof Buffer);
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assert.strictEqual(true, jpegMetadata.xmp.toString().includes('test'));
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// Test with PNG output (PNG should also support XMP metadata)
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const pngData = await sharp(fixtures.inputJpg)
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.resize(100, 100)
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.png()
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.withXmp(customXmp)
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.toBuffer();
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const pngMetadata = await sharp(pngData).metadata();
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// PNG format should preserve XMP metadata when using withXmp
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assert.strictEqual('object', typeof pngMetadata.xmp);
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assert.strictEqual(true, pngMetadata.xmp instanceof Buffer);
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assert.strictEqual(true, pngMetadata.xmp.toString().includes('test'));
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// Test with WebP output (WebP should also support XMP metadata)
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const webpData = await sharp(fixtures.inputJpg)
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.resize(100, 100)
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.webp()
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.withXmp(customXmp)
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.toBuffer();
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const webpMetadata = await sharp(webpData).metadata();
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// WebP format should preserve XMP metadata when using withXmp
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assert.strictEqual('object', typeof webpMetadata.xmp);
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assert.strictEqual(true, webpMetadata.xmp instanceof Buffer);
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assert.strictEqual(true, webpMetadata.xmp.toString().includes('test'));
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});
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it('XMP metadata persists through multiple operations', async () => {
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const customXmp = '<?xml version="1.0"?><x:xmpmeta xmlns:x="adobe:ns:meta/"><rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"><rdf:Description rdf:about="" xmlns:dc="http://purl.org/dc/elements/1.1/"><dc:identifier>persistent-test</dc:identifier></rdf:Description></rdf:RDF></x:xmpmeta>';
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const data = await sharp(fixtures.inputJpg)
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.resize(320, 240)
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.withXmp(customXmp)
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.rotate(90)
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.blur(1)
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.sharpen()
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.toBuffer();
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const metadata = await sharp(data).metadata();
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assert.strictEqual('object', typeof metadata.xmp);
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assert.strictEqual(true, metadata.xmp instanceof Buffer);
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assert.strictEqual(true, metadata.xmp.toString().includes('persistent-test'));
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});
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it('withXmp XMP works with WebP format specifically', async () => {
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const webpXmp = '<?xml version="1.0"?><x:xmpmeta xmlns:x="adobe:ns:meta/"><rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"><rdf:Description rdf:about="" xmlns:dc="http://purl.org/dc/elements/1.1/"><dc:creator><rdf:Seq><rdf:li>WebP Creator</rdf:li></rdf:Seq></dc:creator><dc:format>image/webp</dc:format></rdf:Description></rdf:RDF></x:xmpmeta>';
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const data = await sharp(fixtures.inputJpg)
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.resize(120, 80)
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.webp({ quality: 80 })
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.withXmp(webpXmp)
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.toBuffer();
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const metadata = await sharp(data).metadata();
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assert.strictEqual('webp', metadata.format);
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assert.strictEqual('object', typeof metadata.xmp);
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assert.strictEqual(true, metadata.xmp instanceof Buffer);
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const xmpString = metadata.xmp.toString();
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assert.strictEqual(true, xmpString.includes('WebP Creator'));
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assert.strictEqual(true, xmpString.includes('image/webp'));
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});
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it('withXmp XMP validation - non-string input', function () {
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assert.throws(
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() => sharp().withXmp(123),
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/Expected non-empty string for xmp but received 123 of type number/
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);
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});
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it('withXmp XMP validation - null input', function () {
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assert.throws(
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() => sharp().withXmp(null),
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/Expected non-empty string for xmp but received null of type object/
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);
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});
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it('withXmp XMP validation - empty string', function () {
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assert.throws(
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() => sharp().withXmp(''),
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/Expected non-empty string for xmp/
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);
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});
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});
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describe('Invalid parameters', function () {
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it('String orientation', function () {
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assert.throws(function () {
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