| /* |
| * Copyright (c) 2013, 2021, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package jdk.test.lib.process; |
| |
| import jdk.test.lib.Asserts; |
| |
| import java.io.IOException; |
| import java.io.PrintStream; |
| import java.nio.charset.Charset; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.stream.Collectors; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| public final class OutputAnalyzer { |
| |
| private static final String jvmwarningmsg = ".* VM warning:.*"; |
| |
| private static final String deprecatedmsg = ".* VM warning:.* deprecated.*"; |
| |
| private final OutputBuffer buffer; |
| /** |
| * Create an OutputAnalyzer, a utility class for verifying output and exit |
| * value from a Process |
| * |
| * @param process Process to analyze |
| * @param cs The charset used to convert stdout/stderr from bytes to chars |
| * or null for the default charset. |
| * @throws IOException If an I/O error occurs. |
| */ |
| public OutputAnalyzer(Process process, Charset cs) throws IOException { |
| buffer = OutputBuffer.of(process, cs); |
| } |
| /** |
| * Create an OutputAnalyzer, a utility class for verifying output and exit |
| * value from a Process |
| * |
| * @param process Process to analyze |
| * @throws IOException If an I/O error occurs. |
| */ |
| public OutputAnalyzer(Process process) throws IOException { |
| buffer = OutputBuffer.of(process); |
| } |
| |
| /** |
| * Create an OutputAnalyzer, a utility class for verifying output |
| * |
| * @param buf String buffer to analyze |
| */ |
| public OutputAnalyzer(String buf) { |
| buffer = OutputBuffer.of(buf, buf); |
| } |
| |
| /** |
| * Create an OutputAnalyzer, a utility class for verifying output |
| * |
| * @param file File to analyze |
| */ |
| public OutputAnalyzer(Path file) throws IOException { |
| this(Files.readString(file)); |
| } |
| |
| /** |
| * Create an OutputAnalyzer, a utility class for verifying output |
| * |
| * @param stdout stdout buffer to analyze |
| * @param stderr stderr buffer to analyze |
| */ |
| public OutputAnalyzer(String stdout, String stderr) { |
| buffer = OutputBuffer.of(stdout, stderr); |
| } |
| |
| /** |
| * Create an OutputAnalyzer, a utility class for verifying output |
| * |
| * @param stdout stdout buffer to analyze |
| * @param stderr stderr buffer to analyze |
| * @param stderr exitValue result to analyze |
| */ |
| public OutputAnalyzer(String stdout, String stderr, int exitValue) |
| { |
| buffer = OutputBuffer.of(stdout, stderr, exitValue); |
| } |
| |
| /** |
| * Verify that the stdout contents of output buffer is empty |
| * |
| * @throws RuntimeException |
| * If stdout was not empty |
| */ |
| public OutputAnalyzer stdoutShouldBeEmpty() { |
| if (!getStdout().isEmpty()) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("stdout was not empty"); |
| } |
| return this; |
| } |
| |
| /** |
| * Verify that the stderr contents of output buffer is empty |
| * |
| * @throws RuntimeException |
| * If stderr was not empty |
| */ |
| public OutputAnalyzer stderrShouldBeEmpty() { |
| if (!getStderr().isEmpty()) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("stderr was not empty"); |
| } |
| return this; |
| } |
| |
| /** |
| * Verify that the stderr contents of output buffer is empty, |
| * after filtering out the Hotspot warning messages |
| * |
| * @throws RuntimeException |
| * If stderr was not empty |
| */ |
| public OutputAnalyzer stderrShouldBeEmptyIgnoreVMWarnings() { |
| if (!getStderr().replaceAll(jvmwarningmsg + "\\R", "").isEmpty()) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("stderr was not empty"); |
| } |
| return this; |
| } |
| |
| /** |
| * Verify that the stderr contents of output buffer is empty, |
| * after filtering out all messages matching "warning" (case insensitive) |
| * |
| * @throws RuntimeException |
| * If stderr was not empty |
| */ |
| public OutputAnalyzer stderrShouldBeEmptyIgnoreWarnings() { |
| if (!getStderr().replaceAll("(?i).*warning.*\\R", "").isEmpty()) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("stderr was not empty"); |
| } |
| return this; |
| } |
| |
| /** |
| * Verify that the stderr contents of output buffer is empty, |
| * after filtering out the Hotspot deprecation warning messages |
| * |
| * @throws RuntimeException |
| * If stderr was not empty |
| */ |
| public OutputAnalyzer stderrShouldBeEmptyIgnoreDeprecatedWarnings() { |
| if (!getStderr().replaceAll(deprecatedmsg + "\\R", "").isEmpty()) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("stderr was not empty"); |
| } |
| return this; |
| } |
| |
| /** |
| * Verify that the stdout contents of output buffer is not empty |
| * |
| * @throws RuntimeException |
| * If stdout was empty |
| */ |
| public OutputAnalyzer stdoutShouldNotBeEmpty() { |
| if (getStdout().isEmpty()) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("stdout was empty"); |
| } |
| return this; |
| } |
| |
| /** |
| * Verify that the stderr contents of output buffer is not empty |
| * |
| * @throws RuntimeException |
| * If stderr was empty |
| */ |
| public OutputAnalyzer stderrShouldNotBeEmpty() { |
| if (getStderr().isEmpty()) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("stderr was empty"); |
| } |
| return this; |
| } |
| |
| /** |
| * Verify that the stdout and stderr contents of output buffer contains the string |
| * |
| * @param expectedString String that buffer should contain |
| * @throws RuntimeException If the string was not found |
| */ |
| public OutputAnalyzer shouldContain(String expectedString) { |
| String stdout = getStdout(); |
| String stderr = getStderr(); |
| if (!stdout.contains(expectedString) && !stderr.contains(expectedString)) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("'" + expectedString + "' missing from stdout/stderr \n"); |
| } |
| return this; |
| } |
| |
| /** |
| * Verify that the stdout contents of output buffer contains the string |
| * |
| * @param expectedString String that buffer should contain |
| * @throws RuntimeException If the string was not found |
| */ |
| public OutputAnalyzer stdoutShouldContain(String expectedString) { |
| String stdout = getStdout(); |
| if (!stdout.contains(expectedString)) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("'" + expectedString + "' missing from stdout \n"); |
| } |
| return this; |
| } |
| |
| /** |
| * Verify that the stderr contents of output buffer contains the string |
| * |
| * @param expectedString String that buffer should contain |
| * @throws RuntimeException If the string was not found |
| */ |
| public OutputAnalyzer stderrShouldContain(String expectedString) { |
| String stderr = getStderr(); |
| if (!stderr.contains(expectedString)) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("'" + expectedString + "' missing from stderr \n"); |
| } |
| return this; |
| } |
| |
| /** |
| * Verify that the stdout and stderr contents of output buffer does not contain the string |
| * |
| * @param notExpectedString String that the buffer should not contain |
| * @throws RuntimeException If the string was found |
| */ |
| public OutputAnalyzer shouldNotContain(String notExpectedString) { |
| String stdout = getStdout(); |
| String stderr = getStderr(); |
| if (stdout.contains(notExpectedString)) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("'" + notExpectedString + "' found in stdout \n"); |
| } |
| if (stderr.contains(notExpectedString)) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("'" + notExpectedString + "' found in stderr \n"); |
| } |
| return this; |
| } |
| |
| /** |
| * Verify that the stdout and stderr contents of output buffer are empty |
| * |
| * @throws RuntimeException If the stdout and stderr are not empty |
| */ |
| public OutputAnalyzer shouldBeEmpty() { |
| String stdout = getStdout(); |
| String stderr = getStderr(); |
| if (!stdout.isEmpty()) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("stdout was not empty"); |
| } |
| if (!stderr.isEmpty()) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("stderr was not empty"); |
| } |
| return this; |
| } |
| |
| /** |
| * Verify that the stdout contents of output buffer does not contain the string |
| * |
| * @param notExpectedString String that the buffer should not contain |
| * @throws RuntimeException If the string was found |
| */ |
| public OutputAnalyzer stdoutShouldNotContain(String notExpectedString) { |
| String stdout = getStdout(); |
| if (stdout.contains(notExpectedString)) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("'" + notExpectedString + "' found in stdout \n"); |
| } |
| return this; |
| } |
| |
| /** |
| * Verify that the stderr contents of output buffer does not contain the string |
| * |
| * @param notExpectedString String that the buffer should not contain |
| * @throws RuntimeException If the string was found |
| */ |
| public OutputAnalyzer stderrShouldNotContain(String notExpectedString) { |
| String stderr = getStderr(); |
| if (stderr.contains(notExpectedString)) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("'" + notExpectedString + "' found in stderr \n"); |
| } |
| return this; |
| } |
| |
| /** |
| * Verify that the stdout and stderr contents of output buffer matches |
| * the pattern |
| * |
| * @param regexp |
| * @throws RuntimeException If the pattern was not found |
| */ |
| public OutputAnalyzer shouldMatch(String regexp) { |
| String stdout = getStdout(); |
| String stderr = getStderr(); |
| Pattern pattern = Pattern.compile(regexp, Pattern.MULTILINE); |
| Matcher stdoutMatcher = pattern.matcher(stdout); |
| Matcher stderrMatcher = pattern.matcher(stderr); |
| if (!stdoutMatcher.find() && !stderrMatcher.find()) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("'" + regexp |
| + "' missing from stdout/stderr \n"); |
| } |
| return this; |
| } |
| |
| /** |
| * Verify that the stdout contents of output buffer matches the |
| * pattern |
| * |
| * @param regexp |
| * @throws RuntimeException If the pattern was not found |
| */ |
| public OutputAnalyzer stdoutShouldMatch(String regexp) { |
| String stdout = getStdout(); |
| Matcher matcher = Pattern.compile(regexp, Pattern.MULTILINE).matcher(stdout); |
| if (!matcher.find()) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("'" + regexp |
| + "' missing from stdout \n"); |
| } |
| return this; |
| } |
| |
| /** |
| * Verify that the stderr contents of output buffer matches the |
| * pattern |
| * |
| * @param pattern |
| * @throws RuntimeException If the pattern was not found |
| */ |
| public OutputAnalyzer stderrShouldMatch(String pattern) { |
| String stderr = getStderr(); |
| Matcher matcher = Pattern.compile(pattern, Pattern.MULTILINE).matcher(stderr); |
| if (!matcher.find()) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("'" + pattern |
| + "' missing from stderr \n"); |
| } |
| return this; |
| } |
| |
| /** |
| * Verify that the stdout and stderr contents of output buffer does not |
| * match the pattern |
| * |
| * @param regexp |
| * @throws RuntimeException If the pattern was found |
| */ |
| public OutputAnalyzer shouldNotMatch(String regexp) { |
| String stdout = getStdout(); |
| Pattern pattern = Pattern.compile(regexp, Pattern.MULTILINE); |
| Matcher matcher = pattern.matcher(stdout); |
| if (matcher.find()) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("'" + regexp |
| + "' found in stdout: '" + matcher.group() + "' \n"); |
| } |
| |
| String stderr = getStderr(); |
| matcher = pattern.matcher(stderr); |
| if (matcher.find()) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("'" + regexp |
| + "' found in stderr: '" + matcher.group() + "' \n"); |
| } |
| |
| return this; |
| } |
| |
| /** |
| * Verify that the stdout contents of output buffer does not match the |
| * pattern |
| * |
| * @param regexp |
| * @throws RuntimeException If the pattern was found |
| */ |
| public OutputAnalyzer stdoutShouldNotMatch(String regexp) { |
| String stdout = getStdout(); |
| Matcher matcher = Pattern.compile(regexp, Pattern.MULTILINE).matcher(stdout); |
| if (matcher.find()) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("'" + regexp |
| + "' found in stdout \n"); |
| } |
| return this; |
| } |
| |
| /** |
| * Verify that the stderr contents of output buffer does not match the |
| * pattern |
| * |
| * @param regexp |
| * @throws RuntimeException If the pattern was found |
| */ |
| public OutputAnalyzer stderrShouldNotMatch(String regexp) { |
| String stderr = getStderr(); |
| Matcher matcher = Pattern.compile(regexp, Pattern.MULTILINE).matcher(stderr); |
| if (matcher.find()) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("'" + regexp |
| + "' found in stderr \n"); |
| } |
| return this; |
| } |
| |
| /** |
| * Get the captured group of the first string matching the pattern. |
| * stderr is searched before stdout. |
| * |
| * @param regexp The multi-line pattern to match |
| * @param group The group to capture |
| * @return The matched string or null if no match was found |
| */ |
| public String firstMatch(String regexp, int group) { |
| Pattern pattern = Pattern.compile(regexp, Pattern.MULTILINE); |
| String stderr = getStderr(); |
| Matcher stderrMatcher = pattern.matcher(stderr); |
| if (stderrMatcher.find()) { |
| return stderrMatcher.group(group); |
| } |
| String stdout = getStdout(); |
| Matcher stdoutMatcher = pattern.matcher(stdout); |
| if (stdoutMatcher.find()) { |
| return stdoutMatcher.group(group); |
| } |
| return null; |
| } |
| |
| /** |
| * Get the first string matching the pattern. |
| * stderr is searched before stdout. |
| * |
| * @param pattern The multi-line pattern to match |
| * @return The matched string or null if no match was found |
| */ |
| public String firstMatch(String pattern) { |
| return firstMatch(pattern, 0); |
| } |
| |
| /** |
| * Verify the exit value of the process |
| * |
| * @param expectedExitValue Expected exit value from process |
| * @throws RuntimeException If the exit value from the process did not match the expected value |
| */ |
| public OutputAnalyzer shouldHaveExitValue(int expectedExitValue) { |
| if (getExitValue() != expectedExitValue) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("Expected to get exit value of [" |
| + expectedExitValue + "]\n"); |
| } |
| return this; |
| } |
| |
| /** |
| * Verify the exit value of the process |
| * |
| * @param notExpectedExitValue Unexpected exit value from process |
| * @throws RuntimeException If the exit value from the process did match the expected value |
| */ |
| public OutputAnalyzer shouldNotHaveExitValue(int notExpectedExitValue) { |
| if (getExitValue() == notExpectedExitValue) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("Unexpected to get exit value of [" |
| + notExpectedExitValue + "]\n"); |
| } |
| return this; |
| } |
| |
| |
| /** |
| * Report summary that will help to diagnose the problem |
| * Currently includes: |
| * - standard input produced by the process under test |
| * - standard output |
| * - exit code |
| * Note: the command line is printed by the ProcessTools |
| */ |
| public void reportDiagnosticSummary() { |
| String msg = |
| " stdout: [" + getStdout() + "];\n" + |
| " stderr: [" + getStderr() + "]\n" + |
| " exitValue = " + getExitValue() + "\n"; |
| |
| System.err.println(msg); |
| } |
| |
| /** |
| * Print the stdout buffer to the given {@code PrintStream}. |
| * |
| * @return this OutputAnalyzer |
| */ |
| public OutputAnalyzer outputTo(PrintStream out) { |
| out.println(getStdout()); |
| return this; |
| } |
| |
| /** |
| * Print the stderr buffer to the given {@code PrintStream}. |
| * |
| * @return this OutputAnalyzer |
| */ |
| public OutputAnalyzer errorTo(PrintStream out) { |
| out.println(getStderr()); |
| return this; |
| } |
| |
| /** |
| * Get the contents of the output buffer (stdout and stderr) |
| * |
| * @return Content of the output buffer |
| */ |
| public String getOutput() { |
| return getStdout() + getStderr(); |
| } |
| |
| /** |
| * Get the contents of the stdout buffer |
| * |
| * @return Content of the stdout buffer |
| */ |
| public String getStdout() { |
| return buffer.getStdout(); |
| } |
| |
| /** |
| * Get the contents of the stderr buffer |
| * |
| * @return Content of the stderr buffer |
| */ |
| public String getStderr() { |
| return buffer.getStderr(); |
| } |
| |
| /** |
| * Get the process exit value |
| * |
| * @return Process exit value |
| */ |
| public int getExitValue() { |
| return buffer.getExitValue(); |
| } |
| |
| /** |
| * Get the process' pid |
| * |
| * @return pid |
| */ |
| public long pid() { |
| return buffer.pid(); |
| } |
| |
| /** |
| * Get the contents of the output buffer (stdout and stderr) as list of strings. |
| * Output will be split by newlines. |
| * |
| * @return Contents of the output buffer as list of strings |
| */ |
| public List<String> asLines() { |
| return asLines(getOutput()); |
| } |
| |
| private List<String> asLines(String buffer) { |
| return Arrays.asList(buffer.split("\\R")); |
| } |
| |
| /** |
| * Verifies that the stdout and stderr contents of output buffer are empty, after |
| * filtering out the HotSpot warning messages. |
| * |
| * @throws RuntimeException If the stdout and stderr are not empty |
| */ |
| public OutputAnalyzer shouldBeEmptyIgnoreVMWarnings() { |
| String stdout = getStdout(); |
| String stderr = getStderr(); |
| if (!stdout.isEmpty()) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("stdout was not empty"); |
| } |
| if (!stderr.replaceAll(jvmwarningmsg + "\\R", "").isEmpty()) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("stderr was not empty"); |
| } |
| return this; |
| } |
| |
| /** |
| * Verify that the stderr contents of output buffer matches the pattern, |
| * after filtering out the Hotespot warning messages |
| * |
| * @param pattern |
| * @throws RuntimeException If the pattern was not found |
| */ |
| public OutputAnalyzer stderrShouldMatchIgnoreVMWarnings(String pattern) { |
| String stderr = getStderr().replaceAll(jvmwarningmsg + "\\R", ""); |
| Matcher matcher = Pattern.compile(pattern, Pattern.MULTILINE).matcher(stderr); |
| if (!matcher.find()) { |
| reportDiagnosticSummary(); |
| throw new RuntimeException("'" + pattern |
| + "' missing from stderr \n"); |
| } |
| return this; |
| } |
| |
| /** |
| * Returns the contents of the output buffer (stdout and stderr), without those |
| * JVM warning msgs, as list of strings. Output is split by newlines. |
| * |
| * @return Contents of the output buffer as list of strings |
| */ |
| public List<String> asLinesWithoutVMWarnings() { |
| return Arrays.stream(getOutput().split("\\R")) |
| .filter(Pattern.compile(jvmwarningmsg).asPredicate().negate()) |
| .collect(Collectors.toList()); |
| } |
| |
| /** |
| * @see #shouldMatchByLine(String, String, String) |
| */ |
| public OutputAnalyzer shouldMatchByLine(String pattern) { |
| return shouldMatchByLine(null, null, pattern); |
| } |
| |
| /** |
| * @see #stdoutShouldMatchByLine(String, String, String) |
| */ |
| public OutputAnalyzer stdoutShouldMatchByLine(String pattern) { |
| return stdoutShouldMatchByLine(null, null, pattern); |
| } |
| |
| /** |
| * @see #shouldMatchByLine(String, String, String) |
| */ |
| public OutputAnalyzer shouldMatchByLineFrom(String from, String pattern) { |
| return shouldMatchByLine(from, null, pattern); |
| } |
| |
| /** |
| * @see #shouldMatchByLine(String, String, String) |
| */ |
| public OutputAnalyzer shouldMatchByLineTo(String to, String pattern) { |
| return shouldMatchByLine(null, to, pattern); |
| } |
| |
| /** |
| * Verify that the stdout and stderr contents of output buffer match the |
| * {@code pattern} line by line. The whole output could be matched or |
| * just a subset of it. |
| * |
| * @param from |
| * The line (excluded) from where output will be matched. |
| * Set {@code from} to null for matching from the first line. |
| * @param to |
| * The line (excluded) until where output will be matched. |
| * Set {@code to} to null for matching until the last line. |
| * @param pattern |
| * Matching pattern |
| */ |
| public OutputAnalyzer shouldMatchByLine(String from, String to, String pattern) { |
| return shouldMatchByLine(getOutput(), from, to, pattern); |
| } |
| |
| /** |
| * Verify that the stdout contents of output buffer matches the |
| * {@code pattern} line by line. The whole stdout could be matched or |
| * just a subset of it. |
| * |
| * @param from |
| * The line (excluded) from where stdout will be matched. |
| * Set {@code from} to null for matching from the first line. |
| * @param to |
| * The line (excluded) until where stdout will be matched. |
| * Set {@code to} to null for matching until the last line. |
| * @param pattern |
| * Matching pattern |
| */ |
| public OutputAnalyzer stdoutShouldMatchByLine(String from, String to, String pattern) { |
| return shouldMatchByLine(getStdout(), from, to, pattern); |
| } |
| |
| private OutputAnalyzer shouldMatchByLine(String buffer, String from, String to, String pattern) { |
| List<String> lines = asLines(buffer); |
| |
| int fromIndex = 0; |
| if (from != null) { |
| fromIndex = indexOf(lines, from, 0) + 1; // + 1 -> apply 'pattern' to lines after 'from' match |
| Asserts.assertGreaterThan(fromIndex, 0, |
| "The line/pattern '" + from + "' from where the output should match can not be found"); |
| } |
| |
| int toIndex = lines.size(); |
| if (to != null) { |
| toIndex = indexOf(lines, to, fromIndex); |
| Asserts.assertGreaterThan(toIndex, fromIndex, |
| "The line/pattern '" + to + "' until where the output should match can not be found"); |
| } |
| |
| List<String> subList = lines.subList(fromIndex, toIndex); |
| Asserts.assertFalse(subList.isEmpty(), "There are no lines to check:" |
| + " range " + fromIndex + ".." + toIndex + ", subList = " + subList); |
| |
| subList.stream() |
| .filter(Pattern.compile(pattern).asPredicate().negate()) |
| .findAny() |
| .ifPresent(line -> Asserts.fail( |
| "The line '" + line + "' does not match pattern '" + pattern + "'")); |
| |
| return this; |
| } |
| |
| /** |
| * Check if there is a line matching {@code regexp} and return its index |
| * |
| * @param regexp Matching pattern |
| * @param fromIndex Start matching after so many lines skipped |
| * @return Index of first matching line |
| */ |
| private int indexOf(List<String> lines, String regexp, int fromIndex) { |
| Pattern pattern = Pattern.compile(regexp); |
| for (int i = fromIndex; i < lines.size(); i++) { |
| if (pattern.matcher(lines.get(i)).matches()) { |
| return i; |
| } |
| } |
| return -1; |
| } |
| |
| } |