feat: open more perf files

Currently `hotspot dir` only opens perf.data files. This patch extends
this to perf.data, perf.data.old and perf.data.perfparser files.

src/main.cpp

@@ -236,7 +236,15 @@ int main(int argc, char** argv)
  if (!files.isEmpty()) {
  auto file = files.constFirst();
  if (QFileInfo(file).isDir()) {
- file.append(QLatin1String("/perf.data"));
+ // search for common perf data files in dir and open the first one found
+ // if none is found, hotspot will complain, that `file` is not a file
+ for (const auto& perfDataFile : {QStringLiteral("/perf.data"), QStringLiteral("/perf.data.old"),
+ QStringLiteral("/perf.data.perfparser")}) {
+ if (QFileInfo::exists(file + perfDataFile)) {
+ file.append(perfDataFile);
+ break;
+ }
+ }
  }
 
  if (parser.isSet(exportTo)) {
@@ -267,9 +275,12 @@ int main(int argc, char** argv)
  } else {
  // open perf.data in current CWD, if it exists
  // this brings hotspot closer to the behavior of "perf report"
- const auto perfDataFile = QStringLiteral("perf.data");
- if (QFile::exists(perfDataFile) && window) {
- window->openFile(perfDataFile);
+ for (const auto& perfDataFile :
+ {QStringLiteral("perf.data"), QStringLiteral("perf.data.old"), QStringLiteral("perf.data.perfparser")}) {
+ if (QFileInfo::exists(perfDataFile) && window) {
+ window->openFile(perfDataFile);
+ break;
+ }
  }
  }
  if (window)