@NotNull
@Override
public List<? extends VcsCommitMetadata> readFirstBlock(
@NotNull VirtualFile root, @NotNull Requirements requirements) throws VcsException {
if (!isRepositoryReady(root)) {
return Collections.emptyList();
}
int commitCount = requirements.getCommitCount();
if (requirements.isOrdered()) {
commitCount *=
2; // need to query more to sort them manually; this doesn't affect performance: it is
// equal for -1000 and -2000
}
String[] params =
new String[] {"HEAD", "--branches", "--remotes", "--max-count=" + commitCount};
// NB: not specifying --tags, because it introduces great slowdown if there are many tags,
// but makes sense only if there are heads without branch or HEAD labels (rare case). Such cases
// are partially handles below.
List<VcsCommitMetadata> firstBlock = GitHistoryUtils.loadMetadata(myProject, root, params);
if (requirements instanceof VcsLogProviderRequirementsEx) {
VcsLogProviderRequirementsEx rex = (VcsLogProviderRequirementsEx) requirements;
// on refresh: get new tags, which point to commits not from the first block; then get
// history, walking down just from these tags
// on init: just ignore such tagged-only branches. The price for speed-up.
if (!rex.isOrdered()) {
Collection<VcsRef> newTags = getNewTags(rex.getCurrentRefs(), rex.getPreviousRefs());
if (!newTags.isEmpty()) {
final Set<Hash> firstBlockHashes =
ContainerUtil.map2Set(
firstBlock,
new Function<VcsCommitMetadata, Hash>() {
@Override
public Hash fun(VcsCommitMetadata metadata) {
return metadata.getHash();
}
});
List<VcsRef> unmatchedHeads = getUnmatchedHeads(firstBlockHashes, newTags);
if (!unmatchedHeads.isEmpty()) {
List<VcsCommitMetadata> detailsFromTaggedBranches =
loadSomeCommitsOnTaggedBranches(root, commitCount, unmatchedHeads);
Collection<VcsCommitMetadata> unmatchedCommits =
getUnmatchedCommits(firstBlockHashes, detailsFromTaggedBranches);
firstBlock.addAll(unmatchedCommits);
}
}
}
}
if (requirements.isOrdered()) {
firstBlock = VcsLogSorter.sortByDateTopoOrder(firstBlock);
firstBlock =
new ArrayList<VcsCommitMetadata>(
firstBlock.subList(0, Math.min(firstBlock.size(), requirements.getCommitCount())));
}
return firstBlock;
}
@NotNull
@Override
public List<TimedVcsCommit> getCommitsMatchingFilter(
@NotNull final VirtualFile root,
@NotNull VcsLogFilterCollection filterCollection,
int maxCount)
throws VcsException {
if (!isRepositoryReady(root)) {
return Collections.emptyList();
}
List<String> filterParameters = ContainerUtil.newArrayList();
if (filterCollection.getBranchFilter() != null
&& !filterCollection.getBranchFilter().getBranchNames().isEmpty()) {
GitRepository repository = getRepository(root);
assert repository != null
: "repository is null for root " + root + " but was previously reported as 'ready'";
boolean atLeastOneBranchExists = false;
for (String branchName : filterCollection.getBranchFilter().getBranchNames()) {
if (branchName.equals("HEAD")
|| repository.getBranches().findBranchByName(branchName) != null) {
filterParameters.add(branchName);
atLeastOneBranchExists = true;
}
}
if (!atLeastOneBranchExists) { // no such branches in this repository => filter matches
// nothing
return Collections.emptyList();
}
} else {
filterParameters.addAll(GitHistoryUtils.LOG_ALL);
}
if (filterCollection.getUserFilter() != null) {
String authorFilter =
StringUtil.join(
ContainerUtil.map(
filterCollection.getUserFilter().getUserNames(root), UserNameRegex.INSTANCE),
"|");
filterParameters.add(prepareParameter("author", StringUtil.escapeBackSlashes(authorFilter)));
filterParameters.add(
"--extended-regexp"); // extended regexp required for correctly filtering user names
}
if (filterCollection.getDateFilter() != null) {
// assuming there is only one date filter, until filter expressions are defined
VcsLogDateFilter filter = filterCollection.getDateFilter();
if (filter.getAfter() != null) {
filterParameters.add(prepareParameter("after", filter.getAfter().toString()));
}
if (filter.getBefore() != null) {
filterParameters.add(prepareParameter("before", filter.getBefore().toString()));
}
}
if (filterCollection.getTextFilter() != null) {
String textFilter = filterCollection.getTextFilter().getText();
filterParameters.add(prepareParameter("grep", StringUtil.escapeChars(textFilter, '[', ']')));
}
filterParameters.add(
"--regexp-ignore-case"); // affects case sensitivity of any filter (except file filter)
if (maxCount > 0) {
filterParameters.add(prepareParameter("max-count", String.valueOf(maxCount)));
}
// note: structure filter must be the last parameter, because it uses "--" which separates
// parameters from paths
if (filterCollection.getStructureFilter() != null) {
Collection<VirtualFile> files = filterCollection.getStructureFilter().getFiles();
if (!files.isEmpty()) {
filterParameters.add("--full-history");
filterParameters.add("--simplify-merges");
filterParameters.add("--");
for (VirtualFile file : files) {
filterParameters.add(file.getPath());
}
}
}
List<TimedVcsCommit> commits = ContainerUtil.newArrayList();
GitHistoryUtils.readCommits(
myProject,
root,
filterParameters,
EmptyConsumer.<VcsUser>getInstance(),
EmptyConsumer.<VcsRef>getInstance(),
new CollectConsumer<TimedVcsCommit>(commits));
return commits;
}