refactor: Allow URLs with {format} only (without the percentage).

Closes #16.

Author: michael-simons

src/main/java/ac/simons/oembed/OembedEndpoint.java

@@ -56,6 +56,8 @@
  */
 public class OembedEndpoint {
 
+	private static final Pattern FORMAT_PLACE_HOLDER_PATTERN = Pattern.compile("(?i)%?\\{format}");
+
 	/**
 	 * The name of this provider.
 	 */
@@ -272,8 +274,9 @@ public URI toApiUrl(final String url) {
 		String uri;
 		final List<NameValuePair> query = new ArrayList<>();
 
-		if (this.getEndpoint().toLowerCase().contains("%{format}")) {
-			uri = this.getEndpoint().replaceAll(Pattern.quote("%{format}"), this.getFormat().toString());
+		var matcher = FORMAT_PLACE_HOLDER_PATTERN.matcher(this.getEndpoint());
+		if (matcher.find()) {
+			uri = matcher.replaceAll(this.getFormat().toString());
 		}
 		else {
 			uri = this.getEndpoint();

src/test/java/ac/simons/oembed/OembedEndpointTests.java

@@ -107,6 +107,19 @@ public void toApiUrlShouldWork() {
 				"https://api.twitter.com/1.1/statuses/oembed.json?url=https%3A%2F%2Ftwitter.com%2Frotnroll666%2Fstatus%2F549898095853838336");
 	}
 
+	@Test // GH-16
+	public void vimeoWithoutPercentage() {
+		OembedEndpoint oembedEndpoint = new OembedEndpoint();
+
+		oembedEndpoint.setEndpoint("https://vimeo.com/api/oembed.{format}");
+		oembedEndpoint.setFormat(Format.json);
+		oembedEndpoint.setMaxWidth(null);
+		oembedEndpoint.setMaxHeight(null);
+
+		assertThat(oembedEndpoint.toApiUrl("http://vimeo.com/channels/everythinganimated/111627831")).hasToString(
+				"https://vimeo.com/api/oembed.json?url=http%3A%2F%2Fvimeo.com%2Fchannels%2Feverythinganimated%2F111627831");
+	}
+
 	@Test
 	public void toApiUrlShouldWork2() {