[PATCH] Add basic command parsing
---
gatchat/gatserver.c | 110 ++++++++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 109 insertions(+), 1 deletions(-)
diff --git a/gatchat/gatserver.c b/gatchat/gatserver.c
index 6579b38..c207bd8 100644
--- a/gatchat/gatserver.c
+++ b/gatchat/gatserver.c
@@ -308,9 +308,117 @@ next:
return i + 1;
}
+static gboolean get_basic_prefix(const char *buf, char *prefix)
+{
+ char c = *buf;
+
+ if (!g_ascii_isalpha(c) && c != '&')
+ return FALSE;
+
+ if (g_ascii_isalpha(c)) {
+ c = g_ascii_toupper(c);
+ if (c == 'S') {
+ int i = 0;
+
+ prefix[0] = 'S';
+
+ /* V.250 5.3.2 'S' command follows with
+ * a parameter number.
+ */
+ while (g_ascii_isdigit(buf[++i]))
+ prefix[i] = buf[i];
+
+ prefix[i] = '\0';
+ } else {
+ prefix[0] = c;
+ prefix[1] = '\0';
+ }
+ }
+
+ if (c == '&') {
+ prefix[0] = '&';
+ prefix[1] = g_ascii_toupper(buf[1]);
+ prefix[2] = '\0';
+ }
+
+ return TRUE;
+}
+
static unsigned int parse_basic_command(GAtServer *server, char *buf)
{
- return 0;
+ char *command = NULL;
+ char prefix[3];
+ unsigned int i;
+ GAtServerRequestType type;
+ gboolean seen_equals = FALSE;
+
+ if (!get_basic_prefix(buf, prefix))
+ return 0;
+
+ i = strlen(prefix);
+
+ if (*prefix == 'D') {
+ type = G_AT_SERVER_REQUEST_TYPE_SET;
+
+ /* All following characters are the part of the call */
+ while (buf[i] != '\0')
+ i += 1;
+
+ goto done;
+ }
+
+ if (buf[i] == '\0' || buf[i] == ';') {
+ type = G_AT_SERVER_REQUEST_TYPE_COMMAND_ONLY;
+ goto done;
+ }
+
+ /* Additional commands may follow a command without any character
+ * required for separation.
+ */
+ if (is_basic_command_prefix(&buf[i])) {
+ type = G_AT_SERVER_REQUEST_TYPE_COMMAND_ONLY;
+ goto done;
+ }
+
+ /* Match '?', '=', '=?' and '=xxx' */
+ if (buf[i] == '=') {
+ seen_equals = TRUE;
+ i += 1;
+ }
+
+ if (buf[i] == '?') {
+ i += 1;
+
+ if (seen_equals)
+ type = G_AT_SERVER_REQUEST_TYPE_SUPPORT;
+ else
+ type = G_AT_SERVER_REQUEST_TYPE_QUERY;
+ } else {
+ /* V.250 5.3.1 The subparameter (if any) are all digits */
+ while (g_ascii_isdigit(buf[i]))
+ i++;
+
+ type = G_AT_SERVER_REQUEST_TYPE_SET;
+ }
+
+done:
+ command = g_strndup(buf, i);
+
+ at_command_notify(server, command, prefix, type);
+
+ g_free(command);
+
+ /* Commands like ATA, ATD, ATZ cause the remainder line
+ * to be ignored.
+ */
+ if (*prefix == 'A' || *prefix == 'D' || *prefix == 'Z')
+ return 0;
+
+ /* Consumed the seperator ';' */
+ if (buf[i] == ';')
+ i += 1;
+
+ return i;
}
static void server_parse_line(GAtServer *server, char *line)
--
1.6.6.1