List of usage examples for org.apache.commons.lang3 StringUtils reverse
public static String reverse(final String str)
Reverses a String as per StringBuilder#reverse() .
A null String returns null .
StringUtils.reverse(null) = null StringUtils.reverse("") = "" StringUtils.reverse("bat") = "tab" From source file:com.norconex.commons.lang.file.FileUtil.java
/** * Returns the specified number of lines starting from the end * of a text file.//from w ww. j av a 2s . c om * @param file the file to read lines from * @param encoding the file encoding * @param numberOfLinesToRead the number of lines to read * @param stripBlankLines whether to return blank lines or not * @param filter InputStream filter * @return array of file lines * @throws IOException i/o problem */ public static String[] tail(File file, String encoding, final int numberOfLinesToRead, boolean stripBlankLines, IInputStreamFilter filter) throws IOException { assertFile(file); assertNumOfLinesToRead(numberOfLinesToRead); LinkedList<String> lines = new LinkedList<String>(); BufferedReader reader = new BufferedReader( new InputStreamReader(new ReverseFileInputStream(file), encoding)); int remainingLinesToRead = numberOfLinesToRead; String line; while ((line = reader.readLine()) != null) { if (remainingLinesToRead-- <= 0) { break; } String newLine = StringUtils.reverse(line); if (!stripBlankLines || StringUtils.isNotBlank(line)) { if (filter != null && filter.accept(newLine)) { lines.addFirst(newLine); } else { remainingLinesToRead++; } } else { remainingLinesToRead++; } } reader.close(); return lines.toArray(ArrayUtils.EMPTY_STRING_ARRAY); }
From source file:org.ensembl.hive.longmult.AddTogether.java
private Object add_together(String b_multiplier, Map<String, Object> partialProduct) { // create accu to write digits to (work out potential length int accuLen = 1 + b_multiplier.length() + numericParamToStr(partialProduct.get("1")).length(); getLog().debug("Adding " + b_multiplier + " to " + partialProduct + ": expected " + accuLen); int[] accu = new int[accuLen]; for (int i = 0; i < accuLen; i++) { accu[i] = 0;//from w w w . j a v a 2 s . c o m } // split and reverse the digits in b_multiplier char[] b_digits = StringUtils.reverse(b_multiplier).toCharArray(); // iterate over each digit in b_digits for (int i = 0; i < b_digits.length; i++) { // for each digit char b_digit = b_digits[i]; getLog().debug("i=" + i + ", b_digit=" + b_digit); // get the corresponding partial product for that digit char[] p_digits = StringUtils.reverse(numericParamToStr(partialProduct.get(String.valueOf(b_digit)))) .toCharArray(); // iterate over digits in the product for (int j = 0; j < p_digits.length; j++) { char p_digit = p_digits[j]; getLog().debug("j=" + j + ", p_digit=" + Character.getNumericValue(p_digit) + ", i+j=" + (i + j)); // add to accumulator getLog().debug("[" + i + "+" + j + "] before=" + accu[i + j]); accu[i + j] = accu[i + j] + Character.getNumericValue(p_digit); getLog().debug("[" + i + "+" + j + "] after=" + accu[i + j]); } } // do the carrying int carry = 0; for (int i = 0; i < accu.length; i++) { getLog().debug("Dealing with digit " + i + " of " + accu.length + ": " + accu[i] + ", carry=" + carry); int val = carry + accu[i]; accu[i] = val % 10; carry = val / 10; getLog().debug("Finished dealing with digit " + i + " of " + accu.length + ": " + accu[i] + ", carry=" + carry); } getLog().debug("result=" + Arrays.toString(accu)); // turn accumulator array back into a string and reversing it StringBuilder sb = new StringBuilder(); for (int i = accu.length - 1; i >= 0; i--) { sb.append(accu[i]); } return Long.parseLong(sb.toString()); }
From source file:org.kie.appformer.flow.unit.FlowDescriptorConverterTest.java
@Test public void flowWithUIComponentAndCombinedShowAndHide() throws Exception { final SimpleType string = typeFactory.simpleType(String.class); final SimpleType object = typeFactory.simpleType(Object.class); final UIComponentDescriptor componentDescriptor = descriptorFactory .createUIComponentDescriptor("StringEditor", string, string, object); final Object viewObj = new Object(); final UIComponent<String, String, Object> component = new UIComponent<String, String, Object>() { @Override// w ww .j a v a2 s . c o m public void start(final String input, final Consumer<String> callback) { final String reversed = StringUtils.reverse(input); callback.accept(reversed); } @Override public void onHide() { } @Override public Object asComponent() { return viewObj; } @Override public String getName() { return "StringEditor"; } }; final List<CapturedAction> capturedActions = new ArrayList<>(); final DisplayerDescriptor displayerDescriptor = descriptorFactory.createDisplayerDescriptor("TestDisplayer", object); registry.addDisplayer(displayerDescriptor, () -> new Displayer<Object>() { @Override public void show(final UIComponent<?, ?, Object> uiComponent) { capturedActions.add(new CapturedAction(UIStepDescriptor.Action.SHOW, component)); } @Override public void hide(final UIComponent<?, ?, Object> uiComponent) { capturedActions.add(new CapturedAction(UIStepDescriptor.Action.HIDE, component)); } }); registry.addUIComponent(componentDescriptor, () -> component); final UIStepDescriptor uiStepDescriptor = descriptorFactory.createUIStepDescriptor(displayerDescriptor, UIStepDescriptor.Action.SHOW_AND_HIDE, componentDescriptor); final AppFlowDescriptor uiFlow = descriptorFactory.createAppFlowDescriptor(uiStepDescriptor); try { @SuppressWarnings("unchecked") final AppFlow<String, String> flow = (AppFlow<String, String>) converter.convert(registry, uiFlow); final Ref<String> retVal = new Ref<>(); executor.execute("foo", flow, val -> retVal.val = val); assertNotNull(retVal.val); assertEquals("oof", retVal.val); assertEquals(Arrays.asList(new CapturedAction(UIStepDescriptor.Action.SHOW, component), new CapturedAction(UIStepDescriptor.Action.HIDE, component)), capturedActions); } catch (final AssertionError ae) { throw ae; } catch (final Throwable t) { throw new AssertionError(t); } }
From source file:org.kie.appformer.flow.unit.FlowDescriptorConverterTest.java
@Test public void flowWithUIComponentAndSeparateShowAndHide() throws Exception { final SimpleType string = typeFactory.simpleType(String.class); final SimpleType object = typeFactory.simpleType(Object.class); final UIComponentDescriptor componentDescriptor = descriptorFactory .createUIComponentDescriptor("StringEditor", string, string, object); final Object viewObj = new Object(); final UIComponent<String, String, Object> component = new UIComponent<String, String, Object>() { @Override// w w w .j a v a2 s . c o m public void start(final String input, final Consumer<String> callback) { final String reversed = StringUtils.reverse(input); callback.accept(reversed); } @Override public void onHide() { } @Override public Object asComponent() { return viewObj; } @Override public String getName() { return "StringEditor"; } }; final List<CapturedAction> capturedActions = new ArrayList<>(); final DisplayerDescriptor displayerDescriptor = descriptorFactory.createDisplayerDescriptor("TestDisplayer", object); registry.addDisplayer(displayerDescriptor, () -> new Displayer<Object>() { @Override public void show(final UIComponent<?, ?, Object> uiComponent) { capturedActions.add(new CapturedAction(UIStepDescriptor.Action.SHOW, component)); } @Override public void hide(final UIComponent<?, ?, Object> uiComponent) { capturedActions.add(new CapturedAction(UIStepDescriptor.Action.HIDE, component)); } }); registry.addUIComponent(componentDescriptor, () -> component); final UIStepDescriptor showStepDescriptor = descriptorFactory.createUIStepDescriptor(displayerDescriptor, UIStepDescriptor.Action.SHOW, componentDescriptor); final UIStepDescriptor hideStepDescriptor = descriptorFactory.createUIStepDescriptor(displayerDescriptor, UIStepDescriptor.Action.HIDE, componentDescriptor); final TransformationDescriptor doubleStringDescriptor = descriptorFactory .createTransformationDescriptor("DoubleString", string, string); registry.addTransformation(doubleStringDescriptor, () -> (final String s) -> s + s); final AppFlowDescriptor uiFlow = descriptorFactory.createAppFlowDescriptor(showStepDescriptor) .andThen(doubleStringDescriptor).andThen(hideStepDescriptor); try { @SuppressWarnings("unchecked") final AppFlow<String, String> flow = (AppFlow<String, String>) converter.convert(registry, uiFlow); final Ref<String> retVal = new Ref<>(); executor.execute("foo", flow, val -> retVal.val = val); assertNotNull(retVal.val); assertEquals("oofoof", retVal.val); assertEquals(Arrays.asList(new CapturedAction(UIStepDescriptor.Action.SHOW, component), new CapturedAction(UIStepDescriptor.Action.HIDE, component)), capturedActions); } catch (final AssertionError ae) { throw ae; } catch (final Throwable t) { throw new AssertionError(t); } }
From source file:org.ohdsi.webapi.service.CohortDefinitionService.java
private String formatBitMask(Long n, int size) { return StringUtils.reverse(StringUtils.leftPad(Long.toBinaryString(n), size, "0")); }
From source file:org.phenotips.utilities.updowner.UpDowner.java
private static String turn(String value) { return StringUtils.reverse(StringUtils.replaceEach(value, "ABCDEFGJKLMPQRTUVWYabcdefghijklmnopqrstuvwxyz123456789'.,!?<>[](){}%".split(""), "??W?M?qp??uodbsn?xz??986,'><][)(}{%" .split(""))); }
From source file:org.springframework.data.solr.core.DefaultQueryParserTests.java
@Test public void testRegisterAlternateConverter() { Criteria criteria = new Criteria("field_1").is(100); queryParser.registerConverter(new Converter<Number, String>() { @Override/*from w w w. j a v a 2 s. c o m*/ public String convert(Number arg0) { return StringUtils.reverse(arg0.toString()); } }); Assert.assertEquals("field_1:001", queryParser.createQueryStringFromCriteria(criteria)); }
From source file:uk.ac.ebi.eva.pipeline.io.mappers.VariantVcfFactory.java
/** * Calculates the normalized start, end, reference and alternate of a variant where the * reference and the alternate are not identical. * <p>/*from www. j a v a 2 s. co m*/ * This task comprises 2 steps: removing the trailing bases that are * identical in both alleles, then the leading identical bases. * <p> * It is left aligned because the traling bases are removed before the leading ones, implying a normalization where * the position is moved the least possible from its original location. * @param chromosome needed for error reporting and logging * @param position Input starting position * @param reference Input reference allele * @param alternate Input alternate allele * @return The new start, end, reference and alternate alleles wrapped in a VariantKeyFields */ protected VariantKeyFields normalizeLeftAlign(String chromosome, int position, String reference, String alternate) throws NotAVariantException { if (reference.equals(alternate)) { throw new NotAVariantException("One alternate allele is identical to the reference. Variant found as: " + chromosome + ":" + position + ":" + reference + ">" + alternate); } // Remove the trailing bases String refReversed = StringUtils.reverse(reference); String altReversed = StringUtils.reverse(alternate); int indexOfDifference = StringUtils.indexOfDifference(refReversed, altReversed); reference = StringUtils.reverse(refReversed.substring(indexOfDifference)); alternate = StringUtils.reverse(altReversed.substring(indexOfDifference)); // Remove the leading bases indexOfDifference = StringUtils.indexOfDifference(reference, alternate); int start = position + indexOfDifference; int length = max(reference.length(), alternate.length()); int end = position + length - 1; // -1 because end is inclusive if (indexOfDifference > 0) { reference = reference.substring(indexOfDifference); alternate = alternate.substring(indexOfDifference); } return new VariantKeyFields(start, end, reference, alternate); }