1 files changed, 66 insertions, 0 deletions
diff --git a/src/core/crdop.c b/src/core/crdop.c
new file mode 100644
index 0000000..67b3575
--- /dev/null
+++ b/src/core/crdop.c
@@ -0,0 +1,66 @@
+#include "hybbx/crdop.h"
+
+#include <ctype.h>
+#include <string.h>
+
+static int str_ieq(const char *a, const char *b)
+{
+    if (a == NULL || b == NULL) {
+        return 0;
+    }
+
+    while (*a != '\0' && *b != '\0') {
+        char ca = (char)(*a >= 'A' && *a <= 'Z' ? *a + 32 : *a);
+        char cb = (char)(*b >= 'A' && *b <= 'Z' ? *b + 32 : *b);
+
+        if (ca != cb) {
+            return 0;
+        }
+        a++;
+        b++;
+    }
+
+    return *a == '\0' && *b == '\0';
+}
+
+hybbx_crdop_radio_profile_t hybbx_crdop_profile_parse(const char *value)
+{
+    if (value == NULL || value[0] == '\0') {
+        return HYBBX_CRDOP_PROFILE_AMATEUR;
+    }
+
+    if (str_ieq(value, "cb") || str_ieq(value, "11m") ||
+        str_ieq(value, "citizens_band")) {
+        return HYBBX_CRDOP_PROFILE_CB;
+    }
+
+    return HYBBX_CRDOP_PROFILE_AMATEUR;
+}
+
+const char *hybbx_crdop_profile_name(hybbx_crdop_radio_profile_t profile)
+{
+    return profile == HYBBX_CRDOP_PROFILE_CB ? "cb" : "amateur";
+}
+
+const char *hybbx_crdop_default_arq_bandwidth(hybbx_crdop_radio_profile_t profile)
+{
+    return profile == HYBBX_CRDOP_PROFILE_CB ? "500MAX" : "500MAX";
+}
+
+int hybbx_crdop_bandwidth_exceeds_cb(const char *arq_bandwidth)
+{
+    const char *p;
+    unsigned n = 0;
+
+    if (arq_bandwidth == NULL || arq_bandwidth[0] == '\0') {
+        return 0;
+    }
+
+    p = arq_bandwidth;
+    while (*p >= '0' && *p <= '9') {
+        n = n * 10u + (unsigned)(*p - '0');
+        p++;
+    }
+
+    return n > 1000u;
+}