[PATCH 03/11] Add basic command parsing
According to V.250 5.3.1, the basic command is either a single
character or the '&' followed by a single character.
---
gatchat/gatserver.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 67 insertions(+), 1 deletions(-)
diff --git a/gatchat/gatserver.c b/gatchat/gatserver.c
index fb82ad4..b68894d 100644
--- a/gatchat/gatserver.c
+++ b/gatchat/gatserver.c
@@ -211,10 +211,67 @@ static char *parse_extended_command(GAtServer *server, const char
*buf,
return NULL;
}
+static gboolean get_basic_prefix(const char *buf, char *prefix)
+{
+ char c = *buf;
+
+ 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';
+ }
+ } else if (c == '&') {
+ prefix[0] = '&';
+ prefix[1] = g_ascii_toupper(buf[1]);
+ prefix[2] = '\0';
+ } else
+ return FALSE;
+
+ return TRUE;
+}
+
static char *parse_basic_command(GAtServer *server, const char *buf,
char *prefix)
{
- return NULL;
+ char t = server->v250.s3;
+ int i;
+
+ if (!get_basic_prefix(buf, prefix))
+ return NULL;
+
+ i = strlen(prefix);
+
+ if (*buf == 'D' || *buf == 'd') {
+ /* All following characters are the part of the call */
+ while (buf[i] && buf[i] != t)
+ i++;
+ } else {
+ /* Skip '=', '?' if have */
+ if (buf[i] == '=')
+ i++;
+
+ if (buf[i] == '?')
+ i++;
+
+ /* V.250 5.3.1 The subparameter are all digits if have */
+ while (g_ascii_isdigit(buf[i]))
+ i++;
+ }
+
+ return g_strndup(buf, i);
}
static char *parse_next_command(GAtServer *server, const char *buf,
@@ -263,6 +320,15 @@ static void server_parse_line(GAtServer *server, char *line)
break;
}
+ /* Commands like ATA, ATD, ATZ cause the remainder line
+ * to be ignored.
+ */
+ if (!strcmp(prefix, "A") || !strcmp(prefix, "D") ||
+ !strcmp(prefix, "Z")) {
+ g_free(command);
+ break;
+ }
+
buf += strlen(command);
g_free(command);
--
1.6.6.1