repl: Support cross-session history (#301)

common/goos/ReplHistory.cpp

@@ -0,0 +1,38 @@
+#include "ReplHistory.h"
+
+#include "common/util/FileUtil.h"
+#include "third-party/linenoise.h"
+
+bool ReplHistory::repl_set_history_max_size(size_t len) {
+  return linenoise::SetHistoryMaxLen(len);
+}
+
+bool ReplHistory::repl_readline(const char* prompt, std::string& line) {
+  return linenoise::Readline(prompt, line);
+}
+
+bool ReplHistory::repl_add_to_history(const char* line) {
+  return linenoise::AddHistory(line);
+}
+
+bool ReplHistory::repl_save_history() {
+  // NOTE - library doesn't seem unicode safe on windows
+  std::filesystem::path path = file_util::get_user_home_dir();
+  if (std::filesystem::exists(path)) {
+    return linenoise::SaveHistory((path / ".opengoal.repl.history").string().c_str());
+  }
+  return false;
+}
+
+bool ReplHistory::repl_load_history() {
+  // NOTE - library doesn't seem unicode safe on windows
+  std::filesystem::path path = file_util::get_user_home_dir();
+  if (std::filesystem::exists(path)) {
+    return linenoise::LoadHistory((path / ".opengoal.repl.history").string().c_str());
+  }
+  return false;
+}
+
+const std::vector<std::string>& ReplHistory::repl_get_history() {
+  return linenoise::GetHistory();
+}