move struct ctf_stream -> struct ctf_stream_class

[babeltrace.git] / formats / ctf-text / ctf-text.c

diff --git a/formats/ctf-text/ctf-text.c b/formats/ctf-text/ctf-text.c
index cc882f60b02d64ebbe777701c50c69755bf8007b..2ec71c56765b872a30c2ab040f865356227d75a6 100644 (file)
--- a/formats/ctf-text/ctf-text.c
+++ b/formats/ctf-text/ctf-text.c
@@ -18,6 +18,7 @@
 
 #include <babeltrace/format.h>
 #include <babeltrace/ctf-text/types.h>
+#include <babeltrace/ctf/metadata.h>
 #include <babeltrace/babeltrace.h>
 #include <inttypes.h>
 #include <uuid/uuid.h>
@@ -52,6 +53,116 @@ struct format ctf_text_format = {
        .close_trace = ctf_text_close_trace,
 };
 
+static
+int ctf_text_write_event(struct stream_pos *ppos,
+                        struct ctf_stream_class *stream_class)
+{
+       struct ctf_text_stream_pos *pos =
+               container_of(ppos, struct ctf_text_stream_pos, parent);
+       struct ctf_event *event_class;
+       uint64_t id = 0;
+       int len_index;
+       int ret;
+       int field_nr = 0;
+
+       /* print event header */
+       if (stream_class->event_header) {
+               /* lookup event id */
+               len_index = struct_declaration_lookup_field_index(stream_class->event_header_decl,
+                               g_quark_from_static_string("id"));
+               if (len_index >= 0) {
+                       struct definition_integer *defint;
+                       struct definition *field;
+
+                       field = struct_definition_get_field_from_index(stream_class->event_header, len_index);
+                       assert(field->declaration->id == CTF_TYPE_INTEGER);
+                       defint = container_of(field, struct definition_integer, p);
+                       assert(defint->declaration->signedness == FALSE);
+                       id = defint->value._unsigned;   /* set id */
+               }
+       }
+
+       if (id >= stream_class->events_by_id->len) {
+               fprintf(stdout, "[error] Event id %" PRIu64 " is outside range.\n", id);
+               return -EINVAL;
+       }
+       event_class = g_ptr_array_index(stream_class->events_by_id, id);
+       if (!event_class) {
+               fprintf(stdout, "[error] Event id %" PRIu64 " is unknown.\n", id);
+               return -EINVAL;
+       }
+
+       if (field_nr++ != 0)
+               fprintf(pos->fp, ", ");
+       if (pos->print_names)
+               fprintf(pos->fp, "timestamp = ");
+       else
+               fprintf(pos->fp, "[");
+       fprintf(pos->fp, "%" PRIu64, (uint64_t) 0);     /* TODO */
+       if (!pos->print_names)
+               fprintf(pos->fp, "]");
+
+       if (field_nr++ != 0)
+               fprintf(pos->fp, ", ");
+       if (pos->print_names)
+               fprintf(pos->fp, "name = ");
+       fprintf(pos->fp, "%s: ", g_quark_to_string(event_class->name));
+
+       if (stream_class->event_header) {
+               if (field_nr++ != 0)
+                       fprintf(pos->fp, ", ");
+               if (pos->print_names)
+                       fprintf(pos->fp, "stream.event.header = ");
+               ret = generic_rw(ppos, &stream_class->event_header->p);
+               if (ret)
+                       goto error;
+       }
+
+       /* print stream-declared event context */
+       if (stream_class->event_context) {
+               if (field_nr++ != 0)
+                       fprintf(pos->fp, ", ");
+               if (pos->print_names)
+                       fprintf(pos->fp, "stream.event.context = ");
+               fprintf(pos->fp, " ");
+               ret = generic_rw(ppos, &stream_class->event_context->p);
+               if (ret)
+                       goto error;
+       }
+
+       /* print event-declared event context */
+       if (event_class->context) {
+               if (field_nr++ != 0)
+                       fprintf(pos->fp, ", ");
+               if (pos->print_names)
+                       fprintf(pos->fp, "event.context = ");
+               fprintf(pos->fp, " ");
+               ret = generic_rw(ppos, &event_class->context->p);
+               if (ret)
+                       goto error;
+       }
+
+       /* Read and print event payload */
+       if (event_class->fields) {
+               if (field_nr++ != 0)
+                       fprintf(pos->fp, ", ");
+               if (pos->print_names)
+                       fprintf(pos->fp, "event.fields = ");
+               fprintf(pos->fp, " ");
+               ret = generic_rw(ppos, &event_class->fields->p);
+               if (ret)
+                       goto error;
+       }
+       fprintf(pos->fp, "\n");
+
+       return 0;
+
+error:
+       fprintf(stdout, "[error] Unexpected end of stream. Either the trace data stream is corrupted or metadata description does not match data layout.\n");
+       return ret;
+}
+
+
 struct trace_descriptor *ctf_text_open_trace(const char *path, int flags)
 {
        struct ctf_text_stream_pos *pos;
@@ -69,6 +180,8 @@ struct trace_descriptor *ctf_text_open_trace(const char *path, int flags)
                        goto error;
                pos->fp = fp;
                pos->parent.rw_table = write_dispatch_table;
+               pos->parent.event_cb = ctf_text_write_event;
+               pos->print_names = opt_field_names;
                break;
        case O_RDONLY:
        default: