Add trace environment field getters

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>

diff --git a/formats/ctf/ir/trace.c b/formats/ctf/ir/trace.c
index 8d5f72705c5078b59cf848bfa60a897c293c0212..5787f9f54f6f3be08d81078ab1d9066d1b190ec8 100644 (file)
--- a/formats/ctf/ir/trace.c
+++ b/formats/ctf/ir/trace.c
@@ -259,7 +259,7 @@ error:
 
 int bt_ctf_trace_add_environment_field_integer(struct bt_ctf_trace *trace,
                const char *name,
-               int64_t value)
+               int64_t value)
 {
        struct environment_variable *var = NULL;
        int ret = 0;
@@ -295,6 +295,95 @@ error:
        return ret;
 }
 
+int bt_ctf_trace_get_environment_field_count(struct bt_ctf_trace *trace)
+{
+       int ret = 0;
+
+       if (!trace) {
+               ret = -1;
+               goto end;
+       }
+
+       ret = trace->environment->len;
+end:
+       return ret;
+}
+
+enum bt_environment_field_type
+bt_ctf_trace_get_environment_field_type(struct bt_ctf_trace *trace, int index)
+{
+       struct environment_variable *var;
+       enum bt_environment_field_type type = BT_ENVIRONMENT_FIELD_TYPE_UNKNOWN;
+
+       if (!trace || index < 0 || index >= trace->environment->len) {
+               goto end;
+       }
+
+       var = g_ptr_array_index(trace->environment, index);
+       type = var->type;
+end:
+       return type;
+}
+
+const char *
+bt_ctf_trace_get_environment_field_name(struct bt_ctf_trace *trace,
+               int index)
+{
+       struct environment_variable *var;
+       const char *ret = NULL;
+
+       if (!trace || index < 0 || index >= trace->environment->len) {
+               goto end;
+       }
+
+       var = g_ptr_array_index(trace->environment, index);
+       ret = var->name->str;
+end:
+       return ret;
+}
+
+const char *
+bt_ctf_trace_get_environment_field_value_string(struct bt_ctf_trace *trace,
+               int index)
+{
+       struct environment_variable *var;
+       const char *ret = NULL;
+
+       if (!trace || index < 0 || index >= trace->environment->len) {
+               goto end;
+       }
+
+       var = g_ptr_array_index(trace->environment, index);
+       if (var->type != BT_ENVIRONMENT_FIELD_TYPE_STRING) {
+               goto end;
+       }
+       ret = var->value.string->str;
+end:
+       return ret;
+}
+
+int
+bt_ctf_trace_get_environment_field_value_integer(struct bt_ctf_trace *trace,
+               int index, int64_t *value)
+{
+       struct environment_variable *var;
+       int ret = 0;
+
+       if (!trace || !value || index < 0 || index >= trace->environment->len) {
+               ret = -1;
+               goto end;
+       }
+
+       var = g_ptr_array_index(trace->environment, index);
+       if (var->type != BT_ENVIRONMENT_FIELD_TYPE_INTEGER) {
+               ret = -1;
+               goto end;
+       }
+       *value = var->value.integer;
+end:
+       return ret;
+}
+
 int bt_ctf_trace_add_clock(struct bt_ctf_trace *trace,
                struct bt_ctf_clock *clock)
 {

diff --git a/include/babeltrace/ctf-ir/trace.h b/include/babeltrace/ctf-ir/trace.h
index f5f3415c73c0c0db07deb1828bb449299ea0f4ea..cf14dcffdd9ec54fb20eae26c7f79f1338c8dcda 100644 (file)
--- a/include/babeltrace/ctf-ir/trace.h
+++ b/include/babeltrace/ctf-ir/trace.h
@@ -111,6 +111,78 @@ extern int bt_ctf_trace_add_environment_field_integer(
                struct bt_ctf_trace *trace, const char *name,
                int64_t value);
 
+/*
+ * bt_ctf_trace_get_environment_field_count: get environment field count.
+ *
+ * Get the trace's environment field count.
+ *
+ * @param trace Trace instance.
+ *
+ * Returns the environment field count, a negative value on error.
+ */
+extern int bt_ctf_trace_get_environment_field_count(
+               struct bt_ctf_trace *trace);
+
+/*
+ * bt_ctf_trace_get_environment_field_type: get environment field type.
+ *
+ * Get an environment field's type.
+ *
+ * @param trace Trace instance.
+ * @param index Index of the environment field.
+ *
+ * Returns the environment field count, a negative value on error.
+ */
+extern enum bt_environment_field_type
+bt_ctf_trace_get_environment_field_type(struct bt_ctf_trace *trace,
+               int index);
+
+/*
+ * bt_ctf_trace_get_environment_field_name: get environment field name.
+ *
+ * Get an environment field's name. The string's ownership is not
+ * transferred to the caller.
+ *
+ * @param trace Trace instance.
+ * @param index Index of the environment field.
+ *
+ * Returns the environment field's name, NULL on error.
+ */
+extern const char *
+bt_ctf_trace_get_environment_field_name(struct bt_ctf_trace *trace,
+               int index);
+
+/*
+ * bt_ctf_trace_get_environment_field_value_string: get environment field
+ *     string value.
+ *
+ * Get an environment field's string value. The string's ownership is not
+ * transferred to the caller.
+ *
+ * @param trace Trace instance.
+ * @param index Index of the environment field.
+ *
+ * Returns the environment field's string value, NULL on error.
+ */
+extern const char *
+bt_ctf_trace_get_environment_field_value_string(struct bt_ctf_trace *trace,
+               int index);
+
+/*
+ * bt_ctf_trace_get_environment_field_value_integer: get environment field
+ *      integer value.
+ *
+ * Get an environment field's integer value.
+ *
+ * @param trace Trace instance.
+ * @param index Index of the environment field.
+ *
+ * Returns the environment field's integer value, a negative value on error.
+ */
+extern int
+bt_ctf_trace_get_environment_field_value_integer(struct bt_ctf_trace *trace,
+               int index, int64_t *value);
+
 /*
  * bt_ctf_trace_add_clock: add a clock to the trace.
  *