1 files changed, 66 insertions, 0 deletions
diff --git a/http_parser.h b/http_parser.h
new file mode 100644
index 0000000..9dffe6b
--- /dev/null
+++ b/http_parser.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2022 Mikhail Burakov. This file is part of toolbox.
+ *
+ * toolbox is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * toolbox is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with toolbox.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef HTTP_PARSER_H_
+#define HTTP_PARSER_H_
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif  // __cplusplus
+
+enum HttpParser_Result {
+  kHttpParser_ResultFinished = 0,
+  kHttpParser_ResultWantMore,
+  kHttpParser_ResultError,
+};
+
+struct HttpParser_Callbacks {
+  void (*on_request)(void* user, const char* method, size_t method_size,
+                     const char* target, size_t target_size);
+  void (*on_field)(void* user, const char* name, size_t name_size,
+                   const char* value, size_t value_size);
+  void (*on_finished)(void* user, size_t offset);
+};
+
+struct HttpParser_State;
+
+typedef enum HttpParser_Result (*HttpParser_Handler)(
+    struct HttpParser_State*, const void*, size_t,
+    const struct HttpParser_Callbacks*, void*);
+
+struct HttpParser_State {
+  HttpParser_Handler stage;
+  int maybe_eol;
+  size_t parsing_offset;
+  size_t first_offset;
+  size_t first_size;
+  size_t second_offset;
+  size_t second_size;
+};
+
+void HttpParser_Reset(struct HttpParser_State* state);
+enum HttpParser_Result HttpParser_Parse(
+    struct HttpParser_State* state, const void* buffer, size_t buffer_size,
+    const struct HttpParser_Callbacks* callbacks, void* user);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif  // __cplusplus
+
+#endif  // HTTP_PARSER_H_