| 1 | /* |
|---|---|
| 2 | * Copyright (C) 2007-2010 Júlio Vilmar Gesser. |
| 3 | * Copyright (C) 2011, 2013-2020 The JavaParser Team. |
| 4 | * |
| 5 | * This file is part of JavaParser. |
| 6 | * |
| 7 | * JavaParser can be used either under the terms of |
| 8 | * a) the GNU Lesser General Public License as published by |
| 9 | * the Free Software Foundation, either version 3 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * b) the terms of the Apache License |
| 12 | * |
| 13 | * You should have received a copy of both licenses in LICENCE.LGPL and |
| 14 | * LICENCE.APACHE. Please refer to those files for details. |
| 15 | * |
| 16 | * JavaParser is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | * GNU Lesser General Public License for more details. |
| 20 | */ |
| 21 | |
| 22 | package com.github.javaparser.utils; |
| 23 | |
| 24 | import com.github.javaparser.JavaParser; |
| 25 | import com.github.javaparser.ParseProblemException; |
| 26 | import com.github.javaparser.ParseResult; |
| 27 | import com.github.javaparser.ParserConfiguration; |
| 28 | import com.github.javaparser.ast.CompilationUnit; |
| 29 | |
| 30 | import java.io.IOException; |
| 31 | import java.nio.file.FileSystems; |
| 32 | import java.nio.file.Path; |
| 33 | import java.nio.file.PathMatcher; |
| 34 | import java.util.Optional; |
| 35 | |
| 36 | /** |
| 37 | * A strategy for discovering the structure of a project. |
| 38 | * Implementations could read a pom.xml, a Gradle build file, a makefile... |
| 39 | */ |
| 40 | public interface CollectionStrategy { |
| 41 | |
| 42 | ParserConfiguration getParserConfiguration(); |
| 43 | |
| 44 | ProjectRoot collect(Path path); |
| 45 | |
| 46 | default Optional<Path> getRoot(Path file) { |
| 47 | try { |
| 48 | final JavaParser javaParser = new JavaParser(getParserConfiguration()); |
| 49 | final ParseResult<CompilationUnit> parseResult = javaParser.parse(file); |
| 50 | |
| 51 | if (parseResult.isSuccessful()) { |
| 52 | if (parseResult.getProblems().isEmpty()) { |
| 53 | if (parseResult.getResult().isPresent()) { |
| 54 | final CompilationUnit compilationUnit = parseResult.getResult().get(); |
| 55 | final Optional<CompilationUnit.Storage> storage = compilationUnit.getStorage(); |
| 56 | if (storage.isPresent()) { |
| 57 | final Optional<Path> sourceRootPath = storage.map(CompilationUnit.Storage::getSourceRoot); |
| 58 | return sourceRootPath; |
| 59 | } else { |
| 60 | Log.info("Storage information not present -- an issue with providing a string rather than file reference?"); |
| 61 | } |
| 62 | } else { |
| 63 | Log.info("Parse result not present"); |
| 64 | } |
| 65 | } else { |
| 66 | Log.info("There were (%d) problems parsing file: %s", () -> parseResult.getProblems().size(), () -> parseResult.getProblems()); |
| 67 | } |
| 68 | } else { |
| 69 | Log.info("Parsing was not successful."); |
| 70 | Log.info("There were (%d) problems parsing file: %s", () -> parseResult.getProblems().size(), () -> parseResult.getProblems()); |
| 71 | } |
| 72 | } catch (ParseProblemException e) { |
| 73 | Log.info("Problem parsing file %s", () -> file); |
| 74 | } catch (RuntimeException e) { |
| 75 | Log.info("Could not parse file %s", () -> file); |
| 76 | } catch (IOException e) { |
| 77 | Log.info("Could not read file %s", () -> file); |
| 78 | } |
| 79 | return Optional.empty(); |
| 80 | } |
| 81 | |
| 82 | default PathMatcher getPathMatcher(String pattern) { |
| 83 | return FileSystems.getDefault().getPathMatcher(pattern); |
| 84 | } |
| 85 | } |
| 86 |
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