When I use the regex from b4a I get the following error on the pattern:
However, when I use the same pattern in a java library, everything works fine.
Here is the B4A code:
And here is the java code:
B4X:
java.util.regex.PatternSyntaxException: In a character range [x-y], x is greater than y near index 10:
geo:([\\-0-9.]+),([\\-0-9.]+)(?:,([\\-0-9.]+))?(?:\\?(.*))?
^
at java.util.regex.Pattern.compileImpl(Native Method)
at java.util.regex.Pattern.compile(Pattern.java:407)
at java.util.regex.Pattern.<init>(Pattern.java:390)
at java.util.regex.Pattern.compile(Pattern.java:374)
at anywheresoftware.b4a.keywords.Regex.getPattern(Regex.java:34)
at anywheresoftware.b4a.keywords.Regex.Matcher2(Regex.java:97)
at com.ab.regextest.main._isgeo(main.java:394)
at com.ab.regextest.main._activity_create(main.java:309)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:170)
at com.ab.regextest.main.afterFirstLayout(main.java:98)
at com.ab.regextest.main.access$100(main.java:16)
at com.ab.regextest.main$WaitForLayout.run(main.java:76)
at android.os.Handler.handleCallback(Handler.java:730)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5419)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1187)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)
at dalvik.system.NativeStart.main(Native Method)However, when I use the same pattern in a java library, everything works fine.
Here is the B4A code:
B4X:
Private Sub IsGEO(FoundBC As String) As Boolean
Dim raw As String = FoundBC
Dim res As clsResult
res.Initialize(0)
'FoundBC = "geo:50.847632,2.860613"
Dim m As Matcher = Regex.Matcher2("geo:([\\-0-9.]+),([\\-0-9.]+)(?:,([\\-0-9.]+))?(?:\\?(.*))?",Regex.CASE_INSENSITIVE, raw)
If m.Find = False Then
Return False
End If
res.geoQuery = m.Group(4)
Try
res.geoLatitude = m.Group(1)
If res.geoLatitude > 90 OR res.geoLatitude < -90 Then
Return False
End If
res.geoLongitude = m.Group(2)
If res.geoLongitude > 180 OR res.geoLongitude < -180 Then
Return False
End If
If m.Group(3) <> "" Then
res.geoAltitude = m.Group(3)
If res.geoAltitude < 0 Then
Return False
End If
End If
res.geoURI = "geo:" & res.geoLatitude & "," & res.geoLongitude
If res.geoAltitude > 0 Then
res.geoURI = res.geoURI & "," & res.geoAltitude
End If
If res.geoQuery <> "" Then
res.geoURI = res.geoURI & "?" & res.geoQuery
End If
res.resType = res.TYPE_GEO
Return True
Catch
Return False
End Try
End SubAnd here is the java code:
B4X:
private static final Pattern GEO_URL_PATTERN =
Pattern.compile("geo:([\\-0-9.]+),([\\-0-9.]+)(?:,([\\-0-9.]+))?(?:\\?(.*))?", Pattern.CASE_INSENSITIVE);
public boolean IsGeo(String result) {
CharSequence rawText = result;
Matcher matcher = GEO_URL_PATTERN.matcher(rawText);
if (!matcher.matches()) {
return false;
}
String query = matcher.group(4);
double latitude;
double longitude;
double altitude;
try {
latitude = Double.parseDouble(matcher.group(1));
if (latitude > 90.0 || latitude < -90.0) {
return false;
}
longitude = Double.parseDouble(matcher.group(2));
if (longitude > 180.0 || longitude < -180.0) {
return false;
}
if (matcher.group(3) == null) {
altitude = 0.0;
} else {
altitude = Double.parseDouble(matcher.group(3));
if (altitude < 0.0) {
return false;
}
}
} catch (NumberFormatException ignored) {
return false;
}
return true;
}