1 files changed, 72 insertions, 0 deletions
diff --git a/shared/protocol.c b/shared/protocol.c
new file mode 100644
index 0000000..85b320f
--- /dev/null
+++ b/shared/protocol.c
@@ -0,0 +1,72 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "protocol.h"
+
+void ws_protocol_parse_byte(ws_s_protocol_parser_state* state, char input) {
+  switch(input) {
+    case WS_PROTOCOL_C_NEWLINE: {
+      if (!state->valid) return;
+      break;
+    }
+
+    case WS_PROTOCOL_C_SPACE: {
+      if (!state->valid) return;
+      printf("argument delimiter\n");
+      return;
+    }
+
+    case WS_PROTOCOL_C_NULL: {
+      state->valid = false;
+      return;
+    }
+
+    default: {
+      if (!state->valid) return;
+      printf("recv byte 0x%02x, (\"%c\")\n", input, input);
+      state->cmd[state->cmd_len++] = input;
+      state->args_len[state->arg_len] += 1;
+      if (state->cmd_len == WS_PROTOCOL_CMD_BUFFER_LEN) state->valid = false;
+      return;
+    }
+  }
+
+  printf("command done!\n");
+}
+
+void ws_protocol_parse_bytes(ws_s_protocol_parser_state* state, char* input, unsigned int length) {
+  for (unsigned int i = 0; i < length; i++) ws_protocol_parse_byte(state, input[i]);
+}
+
+ws_s_protocol_parser_state* ws_protocol_parser_alloc() {
+  ws_s_protocol_parser_state* parser_state = malloc(sizeof(ws_s_protocol_parser_state) + sizeof(uint16_t) * WS_PROTOCOL_CMD_MAX_ARGUMENTS);
+  parser_state->cmd = malloc(sizeof(char) * WS_PROTOCOL_CMD_BUFFER_LEN);
+  parser_state->valid = true;
+  parser_state->cmd_len = 0;
+  parser_state->arg_len = 0;
+  parser_state->target = NULL;
+  return parser_state;
+}
+
+void ws_protocol_cmd_init(ws_s_protocol_parser_state* state) {
+  state->target = malloc(sizeof(ws_s_protocol_parsed_cmd) + sizeof(char*) * state->arg_len);
+  for (unsigned int i = 0; i < state->arg_len; i++)
+    state->target->argv[i] = malloc(sizeof(char) * state->args_len[i]);
+  state->target->argc = state->arg_len;
+}
+
+void ws_protocol_parser_free(ws_s_protocol_parser_state* state) {
+  if (state == NULL) return;
+  if (state->target != NULL) ws_protocol_cmd_free(state->target);
+  free(state->cmd);
+  free(state);
+  state = NULL;
+  return;
+}
+void ws_protocol_cmd_free(ws_s_protocol_parsed_cmd* cmd) {
+  for (unsigned int i = 0; i < cmd->argc; i++)
+    free(cmd->argv[i]);
+  free(cmd);
+  cmd = NULL;
+  return;
+}