switch to CMake

src/FileContentsCache.cc

@@ -0,0 +1,34 @@
+#include "FileContentsCache.hh"
+
+#include <unistd.h>
+
+#include <phosg/Filesystem.hh>
+#include <phosg/Time.hh>
+
+using namespace std;
+
+
+FileContentsCache::File::File(const string& name, shared_ptr<const string> contents,
+    uint64_t load_time) : name(name), contents(contents), load_time(load_time) { }
+
+shared_ptr<const string> FileContentsCache::get(const std::string& name) {
+
+  uint64_t t = now();
+  try {
+    auto& entry = this->name_to_file.at(name);
+    if (t - entry.load_time < 300000000) { // not 5 minutes old? return it
+      return entry.contents;
+    }
+  } catch (const out_of_range& e) { }
+
+  shared_ptr<const string> contents(new string(load_file(name)));
+  this->name_to_file.erase(name);
+  this->name_to_file.emplace(piecewise_construct, forward_as_tuple(name),
+      forward_as_tuple(name, contents, t));
+
+  return contents;
+}
+
+shared_ptr<const string> FileContentsCache::get(const char* name) {
+  return this->get(string(name));
+}