1 files changed, 38 insertions, 0 deletions
diff --git a/src/ninja.cc b/src/ninja.cc
index c24f09d..8b76ded 100644
--- a/src/ninja.cc
+++ b/src/ninja.cc
@@ -125,6 +125,7 @@ struct NinjaMain : public BuildLogUser {
   int ToolClean(const Options* options, int argc, char* argv[]);
   int ToolCompilationDatabase(const Options* options, int argc, char* argv[]);
   int ToolRecompact(const Options* options, int argc, char* argv[]);
+  int ToolRestat(const Options* options, int argc, char* argv[]);
   int ToolUrtle(const Options* options, int argc, char** argv);
   int ToolRules(const Options* options, int argc, char* argv[]);
 
@@ -852,6 +853,41 @@ int NinjaMain::ToolRecompact(const Options* options, int argc, char* argv[]) {
   return 0;
 }
 
+int NinjaMain::ToolRestat(const Options* options, int argc, char* argv[]) {
+  if (!EnsureBuildDirExists())
+    return 1;
+
+  string log_path = ".ninja_log";
+  if (!build_dir_.empty())
+    log_path = build_dir_ + "/" + log_path;
+
+  string err;
+  if (!build_log_.Load(log_path, &err)) {
+    Error("loading build log %s: %s", log_path.c_str(), err.c_str());
+    return EXIT_FAILURE;
+  }
+  if (!err.empty()) {
+    // Hack: Load() can return a warning via err by returning true.
+    Warning("%s", err.c_str());
+    err.clear();
+  }
+
+  bool success = build_log_.Restat(log_path, disk_interface_, &err);
+  if (!success) {
+    Error("failed recompaction: %s", err.c_str());
+    return EXIT_FAILURE;
+  }
+
+  if (!config_.dry_run) {
+    if (!build_log_.OpenForWrite(log_path, *this, &err)) {
+      Error("opening build log: %s", err.c_str());
+      return EXIT_FAILURE;
+    }
+  }
+
+  return EXIT_SUCCESS;
+}
+
 int NinjaMain::ToolUrtle(const Options* options, int argc, char** argv) {
   // RLE encoded.
   const char* urtle =
@@ -904,6 +940,8 @@ const Tool* ChooseTool(const string& tool_name) {
       Tool::RUN_AFTER_LOAD, &NinjaMain::ToolCompilationDatabase },
     { "recompact",  "recompacts ninja-internal data structures",
       Tool::RUN_AFTER_LOAD, &NinjaMain::ToolRecompact },
+    { "restat",  "restats all outputs in the build log",
+      Tool::RUN_AFTER_LOAD, &NinjaMain::ToolRestat },
     { "rules",  "list all rules",
       Tool::RUN_AFTER_LOAD, &NinjaMain::ToolRules },
     { "urtle", NULL,