Add framework of server parser

a. The parser fetch and parse one command per loop. The prefix is
the command prefix without parameter. For example, the prefix of
"AT+CLIP=1" is "+CLIP".

b. Search registered notification node in command_list. Invoke the
callback if found.

c. Termiate the execution if the result is an error. Otherwise,
parse next command.

diff --git a/gatchat/gatserver.c b/gatchat/gatserver.c
index 4df3f06..8e7955c 100644 (file)
--- a/gatchat/gatserver.c
+++ b/gatchat/gatserver.c
@@ -197,42 +197,48 @@ static gboolean is_basic_command_prefix(const char *buf)
        return FALSE;
 }
 
-static void parse_extended_command(GAtServer *server, char *buf)
+static void parse_extended_command(GAtServer *server, char *buf,
+                                       unsigned int *len)
 {
        g_at_server_send_final(server, G_AT_SERVER_RESULT_ERROR);
 }
 
-static void parse_basic_command(GAtServer *server, char *buf)
+static void parse_basic_command(GAtServer *server, char *buf,
+                                       unsigned int *len)
 {
        g_at_server_send_final(server, G_AT_SERVER_RESULT_ERROR);
 }
 
 static void server_parse_line(GAtServer *server, char *line)
 {
-       gsize i = 0;
-       char c;
-
-       if (line == NULL) {
-               g_at_server_send_final(server, G_AT_SERVER_RESULT_ERROR);
-               goto done;
-       }
+       char *buf = line;
 
-       if (line[0] == '\0') {
+       if (*buf == '\0') {
                g_at_server_send_final(server, G_AT_SERVER_RESULT_OK);
                goto done;
        }
 
-       c = line[i];
-       /* skip semicolon */
-       if (c == ';')
-               c = line[++i];
+       while (*buf) {
+               unsigned int len = 0;
+               char c = *buf;
 
-       if (is_extended_command_prefix(c))
-               parse_extended_command(server, line + i);
-       else if (is_basic_command_prefix(line + i))
-               parse_basic_command(server, line + i);
-       else
-               g_at_server_send_final(server, G_AT_SERVER_RESULT_ERROR);
+               /* skip semicolon */
+               if (c == ';')
+                       c = *(++buf);
+
+               if (c == '\0')
+                       break;
+
+               if (is_extended_command_prefix(c))
+                       parse_extended_command(server, buf, &len);
+               else if (is_basic_command_prefix(buf))
+                       parse_basic_command(server, buf, &len);
+
+               if (len == 0)
+                       break;
+
+               buf += len;
+       }
 
 done:
        g_free(line);