Git “怎么做?”;吉特格雷普-e<;模式>&引用;用它?
我使用“git grep-e”查找与内容中的模式匹配的文件。 我查看了jgit的索引,没有找到“grep”,但最近的是PatternMatchRevFilter。这与“git grep”的做法类似吗 在官方的JGit用户指南中,它说“TODO谈论过滤器”。)有人举过如何使用这个过滤器的例子吗 谢谢 杰森Git “怎么做?”;吉特格雷普-e<;模式>&引用;用它?,git,jgit,Git,Jgit,我使用“git grep-e”查找与内容中的模式匹配的文件。 我查看了jgit的索引,没有找到“grep”,但最近的是PatternMatchRevFilter。这与“git grep”的做法类似吗 在官方的JGit用户指南中,它说“TODO谈论过滤器”。)有人举过如何使用这个过滤器的例子吗 谢谢 杰森 注:这可能是一个单独的问题-如何为搜索指定分支?首先,PatternMatchRevFilter不是您想要的。RevFilter用于在漫游期间选择某些修订(提交)。因此它相当于git log--
注:这可能是一个单独的问题-如何为搜索指定分支?首先,PatternMatchRevFilter不是您想要的。RevFilter用于在漫游期间选择某些修订(提交)。因此它相当于git log--grep=pattern 您需要的是遍历一个修订版的树并阅读blob内容 目前还没有一个简单易用的API可以与git grep相当。您已经组合了较低级别的API:
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.eclipse.jgit.diff.RawText;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.ObjectLoader;
import org.eclipse.jgit.lib.ObjectReader;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
import org.eclipse.jgit.treewalk.AbstractTreeIterator;
import org.eclipse.jgit.treewalk.CanonicalTreeParser;
import org.eclipse.jgit.treewalk.TreeWalk;
public class Grep {
private final Repository repository;
private final Pattern pattern;
private final String revName;
public Grep(Repository repository, Pattern pattern, String revName) {
this.repository = repository;
this.pattern = pattern;
this.revName = revName;
}
public void grepPrintingResults() throws IOException {
ObjectReader objectReader = repository.newObjectReader();
try {
ObjectId commitId = repository.resolve(revName);
impl(objectReader, commitId);
} finally {
objectReader.release();
}
}
private void impl(ObjectReader objectReader, ObjectId commitId)
throws IOException {
TreeWalk treeWalk = new TreeWalk(objectReader);
RevWalk revWalk = new RevWalk(objectReader);
RevCommit commit = revWalk.parseCommit(commitId);
CanonicalTreeParser treeParser = new CanonicalTreeParser();
treeParser.reset(objectReader, commit.getTree());
int treeIndex = treeWalk.addTree(treeParser);
treeWalk.setRecursive(true);
while (treeWalk.next()) {
AbstractTreeIterator it = treeWalk.getTree(treeIndex,
AbstractTreeIterator.class);
ObjectId objectId = it.getEntryObjectId();
ObjectLoader objectLoader = objectReader.open(objectId);
if (!isBinary(objectLoader.openStream())) {
List<String> matchedLines = getMatchedLines(objectLoader
.openStream());
if (!matchedLines.isEmpty()) {
String path = it.getEntryPathString();
for (String matchedLine : matchedLines) {
System.out.println(path + ":" + matchedLine);
}
}
}
}
}
private List<String> getMatchedLines(InputStream stream) throws IOException {
BufferedReader buf = null;
try {
List<String> matchedLines = new ArrayList<String>();
InputStreamReader reader = new InputStreamReader(stream, "UTF-8");
buf = new BufferedReader(reader);
String line;
while ((line = buf.readLine()) != null) {
Matcher m = pattern.matcher(line);
if (m.find()) {
matchedLines.add(line);
}
}
return matchedLines;
} finally {
if (buf != null) {
buf.close();
}
}
}
private static boolean isBinary(InputStream stream) throws IOException {
try {
return RawText.isBinary(stream);
} finally {
try {
stream.close();
} catch (IOException e) {
// Ignore, we were just reading
}
}
}
}
谢谢@robinst,我试试看!上述内容可以制作成jgit的GrepCommand,我只是不确定它是否也应该提供并行grepping,例如通过ExecutorService。
Grep grep = new Grep(repository, Pattern.compile("test"), "HEAD");
grep.grepPrintingResults();