1 files changed, 46 insertions, 0 deletions
diff --git a/src/base/toml/TomlParser.cpp b/src/base/toml/TomlParser.cpp
new file mode 100644
index 00000000..a45af712
--- /dev/null
+++ b/src/base/toml/TomlParser.cpp
@@ -0,0 +1,46 @@
+#include "cru/base/toml/TomlParser.h"
+#include "cru/base/StringUtil.h"
+#include "cru/base/toml/TomlDocument.h"
+
+namespace cru::toml {
+TomlParser::TomlParser(std::string input) : input_(std::move(input)) {}
+
+TomlParser::~TomlParser() = default;
+
+TomlDocument TomlParser::Parse() {
+  if (cache_) {
+    return *cache_;
+  }
+
+  cache_ = TomlDocument();
+  DoParse(*cache_);
+  return *cache_;
+}
+
+void TomlParser::DoParse(TomlDocument& document) {
+  std::vector<std::string> lines =
+      cru::string::Split(input_, "\n", cru::string::SplitOptions::RemoveSpace);
+
+  std::string current_section_name;
+
+  for (auto& line : lines) {
+    line = cru::string::Trim(line);
+    if (line.starts_with("[") && line.ends_with("]")) {
+      current_section_name = line.substr(1, line.size() - 2);
+    } else if (line.starts_with("#")) {
+      // Ignore comments.
+    } else {
+      auto equal_index = line.find('=');
+
+      if (equal_index == std::string::npos) {
+        throw TomlParsingException("Invalid TOML line: " + line);
+      }
+
+      auto key = cru::string::Trim(line.substr(0, equal_index));
+      auto value = cru::string::Trim(line.substr(equal_index + 1));
+
+      document.GetSectionOrCreate(current_section_name)->SetValue(key, value);
+    }
+  }
+}
+}  // namespace cru::toml