I have the following regular expression:
\S*\.(jpg|gif|png)$
which I have tested in multiple online Javascript testers, and it works.
The intent is to match filenames for image files. (e.g.
"myimagefilename.jpg").
my code to set this up is below. When I step through it I find the
following:
1. The regular expression looks valid, meaning at runtime the
IMAGE_FILE_PATTERN has proper javascript form: /\S*\.(jpg|png|gif|bmp)$/gi
2. The following filename -> "DSC_0001.JPG" evaluates to false when tested
against the IMAGE_FILE_PATTERN.
3. The ignoreCase attribute returns true on the IMAGE_FILE_PATTERN.
Anyone have any suggestions on why this keeps evaluating to false with all
of my image file names?
public class MyClass {
protected static final RegExp IMAGE_FILE_PATTERN = RegExp.compile(
"\\S*\\.(jpg|png|gif|bmp)$", "gi");
public CarouselWidget(JSONArray fileList) {
Image img;
JSONValue val;
JSONString jString;
String urlFragment;
boolean match;
int size = fileList.size();
for(int index=0; index<size; index++) {
val = fileList.get(index);
jString = val.isString();
if (jString != null) {
urlFragment = jString.toString();
match = IMAGE_FILE_PATTERN.test(urlFragment);
@SuppressWarnings("unused")
boolean ignoreCase = IMAGE_FILE_PATTERN.getIgnoreCase();
if (match) {
img = new Image(ImageBrowserEntryPoint.baseUrl + "/" + urlFragment);
img.addClickHandler(new ImageClickHandler(tPanel, urlFragment));
hPanel.add(img);
}
}
}
}
}
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