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package git4idea.log;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.vcs.log.Hash;
import com.intellij.vcs.log.VcsLogObjectsFactory;
import com.intellij.vcs.log.VcsRef;
import com.intellij.vcs.log.impl.HashImpl;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/**
* TODO: remove when tags are supported by the {@link git4idea.repo.GitRepositoryReader}.
*
* @author erokhins
*/
class RefParser {
private final VcsLogObjectsFactory myFactory;
public RefParser(VcsLogObjectsFactory factory) {
myFactory = factory;
}
// e25b7d8f (HEAD, refs/remotes/origin/master, refs/remotes/origin/HEAD, refs/heads/master)
public List<VcsRef> parseCommitRefs(@NotNull String input, @NotNull VirtualFile root) {
int firstSpaceIndex = input.indexOf(' ');
if (firstSpaceIndex < 0) {
return Collections.emptyList();
}
String strHash = input.substring(0, firstSpaceIndex);
Hash hash = HashImpl.build(strHash);
String refPaths = input.substring(firstSpaceIndex + 2, input.length() - 1);
String[] longRefPaths = refPaths.split(", ");
List<VcsRef> refs = new ArrayList<VcsRef>();
for (String longRefPatch : longRefPaths) {
VcsRef ref = createRef(hash, longRefPatch, root);
if (ref != null) {
refs.add(ref);
}
}
return refs;
}
@Nullable
private static String getRefName(@NotNull String longRefPath, @NotNull String startPatch) {
String tagPrefix = "tag: ";
if (longRefPath.startsWith(tagPrefix)) {
longRefPath = longRefPath.substring(tagPrefix.length());
}
if (longRefPath.startsWith(startPatch)) {
return longRefPath.substring(startPatch.length());
}
else {
return null;
}
}
// example input: fb29c80 refs/tags/92.29
@Nullable
private VcsRef createRef(@NotNull Hash hash, @NotNull String longRefPath, @NotNull VirtualFile root) {
String name = getRefName(longRefPath, "refs/tags/");
if (name != null) {
return myFactory.createRef(hash, name, GitRefManager.TAG, root);
}
return null;
}
}
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