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

/*
 * BabelTrace - Common Trace Format (CTF)
 *
 * CTF Text Format registration.
 *
 * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
 *
 * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 */

#include <babeltrace/format.h>
#include <babeltrace/ctf-text/types.h>
#include <babeltrace/ctf/metadata.h>
#include <babeltrace/babeltrace-internal.h>
#include <inttypes.h>
#include <uuid/uuid.h>
#include <sys/mman.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <dirent.h>
#include <glib.h>
#include <unistd.h>
#include <stdlib.h>

int opt_all_field_names,
	opt_scope_field_names,
	opt_header_field_names,
	opt_context_field_names,
	opt_payload_field_names;

enum field_item {
	ITEM_SCOPE,
	ITEM_HEADER,
	ITEM_CONTEXT,
	ITEM_PAYLOAD,
};

struct trace_descriptor *ctf_text_open_trace(const char *path, int flags,
		void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset,
			int whence), FILE *metadata_fp);
void ctf_text_close_trace(struct trace_descriptor *descriptor);

static
rw_dispatch write_dispatch_table[] = {
	[ CTF_TYPE_INTEGER ] = ctf_text_integer_write,
	[ CTF_TYPE_FLOAT ] = ctf_text_float_write,
	[ CTF_TYPE_ENUM ] = ctf_text_enum_write,
	[ CTF_TYPE_STRING ] = ctf_text_string_write,
	[ CTF_TYPE_STRUCT ] = ctf_text_struct_write,
	[ CTF_TYPE_VARIANT ] = ctf_text_variant_write,
	[ CTF_TYPE_ARRAY ] = ctf_text_array_write,
	[ CTF_TYPE_SEQUENCE ] = ctf_text_sequence_write,
};

static
struct format ctf_text_format = {
	.open_trace = ctf_text_open_trace,
	.close_trace = ctf_text_close_trace,
};

static GQuark Q_STREAM_PACKET_CONTEXT_TIMESTAMP_BEGIN,
	Q_STREAM_PACKET_CONTEXT_TIMESTAMP_END,
	Q_STREAM_PACKET_CONTEXT_EVENTS_DISCARDED,
	Q_STREAM_PACKET_CONTEXT_CONTENT_SIZE,
	Q_STREAM_PACKET_CONTEXT_PACKET_SIZE;

static
void __attribute__((constructor)) init_quarks(void)
{
	Q_STREAM_PACKET_CONTEXT_TIMESTAMP_BEGIN = g_quark_from_static_string("stream.packet.context.timestamp_begin");
	Q_STREAM_PACKET_CONTEXT_TIMESTAMP_END = g_quark_from_static_string("stream.packet.context.timestamp_end");
	Q_STREAM_PACKET_CONTEXT_EVENTS_DISCARDED = g_quark_from_static_string("stream.packet.context.events_discarded");
	Q_STREAM_PACKET_CONTEXT_CONTENT_SIZE = g_quark_from_static_string("stream.packet.context.content_size");
	Q_STREAM_PACKET_CONTEXT_PACKET_SIZE = g_quark_from_static_string("stream.packet.context.packet_size");
}

int print_field(struct definition *definition)
{
	/* Print all fields in verbose mode */
	if (babeltrace_verbose)
		return 1;

	/* Filter out part of the packet context */
	if (definition->path == Q_STREAM_PACKET_CONTEXT_TIMESTAMP_BEGIN)
		return 0;
	if (definition->path == Q_STREAM_PACKET_CONTEXT_TIMESTAMP_END)
		return 0;
	if (definition->path == Q_STREAM_PACKET_CONTEXT_EVENTS_DISCARDED)
		return 0;
	if (definition->path == Q_STREAM_PACKET_CONTEXT_CONTENT_SIZE)
		return 0;
	if (definition->path == Q_STREAM_PACKET_CONTEXT_PACKET_SIZE)
		return 0;

	return 1;
}

static
void set_field_names_print(struct ctf_text_stream_pos *pos, enum field_item item)
{
	switch (item) {
	case ITEM_SCOPE:
		if (opt_all_field_names || opt_scope_field_names)
			pos->print_names = 1;
		else
			pos->print_names = 0;
		break;
	case ITEM_HEADER:
		if (opt_all_field_names || opt_header_field_names)
			pos->print_names = 1;
		else
			pos->print_names = 0;
		break;
	case ITEM_CONTEXT:
		if (opt_all_field_names || opt_context_field_names)
			pos->print_names = 1;
		else
			pos->print_names = 0;
		break;
	case ITEM_PAYLOAD:
		if (opt_all_field_names || opt_payload_field_names)
			pos->print_names = 1;
		else
			pos->print_names = 0;

		break;
	default:
		assert(0);
	}
}

static
int ctf_text_write_event(struct stream_pos *ppos,
			 struct ctf_stream *stream)
{
	struct ctf_text_stream_pos *pos =
		container_of(ppos, struct ctf_text_stream_pos, parent);
	struct ctf_stream_class *stream_class = stream->stream_class;
	int field_nr_saved;
	struct ctf_event *event_class;
	struct ctf_stream_event *event;
	uint64_t id;
	int ret;

	id = stream->event_id;

	if (id >= stream_class->events_by_id->len) {
		fprintf(stdout, "[error] Event id %" PRIu64 " is outside range.\n", id);
		return -EINVAL;
	}
	event = g_ptr_array_index(stream->events_by_id, id);
	if (!event) {
		fprintf(stdout, "[error] Event id %" PRIu64 " is unknown.\n", id);
		return -EINVAL;
	}
	event_class = g_ptr_array_index(stream_class->events_by_id, id);
	if (!event) {
		fprintf(stdout, "[error] Event id %" PRIu64 " is unknown.\n", id);
		return -EINVAL;
	}

	if (stream->has_timestamp) {
		set_field_names_print(pos, ITEM_HEADER);
		if (pos->print_names)
			fprintf(pos->fp, "timestamp = ");
		else
			fprintf(pos->fp, "[");
		fprintf(pos->fp, "%12" PRIu64, stream->timestamp);
		if (!pos->print_names)
			fprintf(pos->fp, "]");

		if (pos->print_names)
			fprintf(pos->fp, ", ");
		else
			fprintf(pos->fp, " ");
	}
	set_field_names_print(pos, ITEM_HEADER);
	if (pos->print_names)
		fprintf(pos->fp, "name = ");
	fprintf(pos->fp, "%s", g_quark_to_string(event_class->name));
	if (pos->print_names)
		pos->field_nr++;
	else
		fprintf(pos->fp, ":");

	/* print cpuid field from packet context */
	if (stream->stream_packet_context) {
		if (pos->field_nr++ != 0)
			fprintf(pos->fp, ",");
		set_field_names_print(pos, ITEM_SCOPE);
		if (pos->print_names)
			fprintf(pos->fp, " stream.packet.context =");
		field_nr_saved = pos->field_nr;
		pos->field_nr = 0;
		set_field_names_print(pos, ITEM_CONTEXT);
		ret = generic_rw(ppos, &stream->stream_packet_context->p);
		if (ret)
			goto error;
		pos->field_nr = field_nr_saved;
	}

	/* Only show the event header in verbose mode */
	if (babeltrace_verbose && stream->stream_event_header) {
		if (pos->field_nr++ != 0)
			fprintf(pos->fp, ",");
		set_field_names_print(pos, ITEM_SCOPE);
		if (pos->print_names)
			fprintf(pos->fp, " stream.event.header =");
		field_nr_saved = pos->field_nr;
		pos->field_nr = 0;
		set_field_names_print(pos, ITEM_CONTEXT);
		ret = generic_rw(ppos, &stream->stream_event_header->p);
		if (ret)
			goto error;
		pos->field_nr = field_nr_saved;
	}

	/* print stream-declared event context */
	if (stream->stream_event_context) {
		if (pos->field_nr++ != 0)
			fprintf(pos->fp, ",");
		set_field_names_print(pos, ITEM_SCOPE);
		if (pos->print_names)
			fprintf(pos->fp, " stream.event.context =");
		field_nr_saved = pos->field_nr;
		pos->field_nr = 0;
		set_field_names_print(pos, ITEM_CONTEXT);
		ret = generic_rw(ppos, &stream->stream_event_context->p);
		if (ret)
			goto error;
		pos->field_nr = field_nr_saved;
	}

	/* print event-declared event context */
	if (event->event_context) {
		if (pos->field_nr++ != 0)
			fprintf(pos->fp, ",");
		set_field_names_print(pos, ITEM_SCOPE);
		if (pos->print_names)
			fprintf(pos->fp, " event.context =");
		field_nr_saved = pos->field_nr;
		pos->field_nr = 0;
		set_field_names_print(pos, ITEM_CONTEXT);
		ret = generic_rw(ppos, &event->event_context->p);
		if (ret)
			goto error;
		pos->field_nr = field_nr_saved;
	}

	/* Read and print event payload */
	if (event->event_fields) {
		if (pos->field_nr++ != 0)
			fprintf(pos->fp, ",");
		set_field_names_print(pos, ITEM_SCOPE);
		if (pos->print_names)
			fprintf(pos->fp, " event.fields =");
		field_nr_saved = pos->field_nr;
		pos->field_nr = 0;
		set_field_names_print(pos, ITEM_PAYLOAD);
		ret = generic_rw(ppos, &event->event_fields->p);
		if (ret)
			goto error;
		pos->field_nr = field_nr_saved;
	}
	/* newline */
	fprintf(pos->fp, "\n");
	pos->field_nr = 0;

	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,
		void (*move_pos_slow)(struct ctf_stream_pos *pos, size_t offset,
			int whence), FILE *metadata_fp)
{
	struct ctf_text_stream_pos *pos;
	FILE *fp;

	pos = g_new0(struct ctf_text_stream_pos, 1);

	switch (flags & O_ACCMODE) {
	case O_RDWR:
		if (!path)
			fp = stdout;
		else
			fp = fopen(path, "w");
		if (!fp)
			goto error;
		pos->fp = fp;
		pos->parent.rw_table = write_dispatch_table;
		pos->parent.event_cb = ctf_text_write_event;
		pos->print_names = 0;
		break;
	case O_RDONLY:
	default:
		fprintf(stdout, "[error] Incorrect open flags.\n");
		goto error;
	}

	return &pos->trace_descriptor;
error:
	g_free(pos);
	return NULL;
}

void ctf_text_close_trace(struct trace_descriptor *td)
{
	struct ctf_text_stream_pos *pos =
		container_of(td, struct ctf_text_stream_pos, trace_descriptor);
	fclose(pos->fp);
	g_free(pos);
}

void __attribute__((constructor)) ctf_text_init(void)
{
	int ret;

	ctf_text_format.name = g_quark_from_static_string("text");
	ret = bt_register_format(&ctf_text_format);
	assert(!ret);
}

/* TODO: finalize */
Commit	Line	Data
642ec66d MD	1	/*
	2	* BabelTrace - Common Trace Format (CTF)
	3	*
	4	* CTF Text Format registration.
	5	*
64fa3fec MD	6	* Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
	7	*
	8	* Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
642ec66d MD	9	*
	10	* Permission is hereby granted, free of charge, to any person obtaining a copy
	11	* of this software and associated documentation files (the "Software"), to deal
	12	* in the Software without restriction, including without limitation the rights
	13	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	14	* copies of the Software, and to permit persons to whom the Software is
	15	* furnished to do so, subject to the following conditions:
	16	*
	17	* The above copyright notice and this permission notice shall be included in
	18	* all copies or substantial portions of the Software.
	19	*/
	20
	21	#include <babeltrace/format.h>
	22	#include <babeltrace/ctf-text/types.h>
31262354	23	#include <babeltrace/ctf/metadata.h>
70bd0a12	24	#include <babeltrace/babeltrace-internal.h>
642ec66d MD	25	#include <inttypes.h>
	26	#include <uuid/uuid.h>
	27	#include <sys/mman.h>
	28	#include <errno.h>
	29	#include <sys/types.h>
	30	#include <sys/stat.h>
	31	#include <fcntl.h>
	32	#include <dirent.h>
	33	#include <glib.h>
	34	#include <unistd.h>
	35	#include <stdlib.h>
	36
cba1661c MD	37	int opt_all_field_names,
	38	opt_scope_field_names,
	39	opt_header_field_names,
	40	opt_context_field_names,
	41	opt_payload_field_names;
	42
	43	enum field_item {
	44	ITEM_SCOPE,
	45	ITEM_HEADER,
	46	ITEM_CONTEXT,
	47	ITEM_PAYLOAD,
	48	};
b88d6e85	49
b086c01a JD	50	struct trace_descriptor ctf_text_open_trace(const char path, int flags,
b086c01a JD	51	void (move_pos_slow)(struct ctf_stream_pos pos, size_t offset,
ae23d232	52	int whence), FILE *metadata_fp);
642ec66d MD	53	void ctf_text_close_trace(struct trace_descriptor *descriptor);
642ec66d MD	54
642ec66d MD	55	static
	56	rw_dispatch write_dispatch_table[] = {
	57	[ CTF_TYPE_INTEGER ] = ctf_text_integer_write,
	58	[ CTF_TYPE_FLOAT ] = ctf_text_float_write,
	59	[ CTF_TYPE_ENUM ] = ctf_text_enum_write,
	60	[ CTF_TYPE_STRING ] = ctf_text_string_write,
	61	[ CTF_TYPE_STRUCT ] = ctf_text_struct_write,
	62	[ CTF_TYPE_VARIANT ] = ctf_text_variant_write,
	63	[ CTF_TYPE_ARRAY ] = ctf_text_array_write,
	64	[ CTF_TYPE_SEQUENCE ] = ctf_text_sequence_write,
	65	};
	66
	67	static
	68	struct format ctf_text_format = {
	69	.open_trace = ctf_text_open_trace,
	70	.close_trace = ctf_text_close_trace,
	71	};
	72
d335f0f7 MD	73	static GQuark Q_STREAM_PACKET_CONTEXT_TIMESTAMP_BEGIN,
	74	Q_STREAM_PACKET_CONTEXT_TIMESTAMP_END,
	75	Q_STREAM_PACKET_CONTEXT_EVENTS_DISCARDED,
	76	Q_STREAM_PACKET_CONTEXT_CONTENT_SIZE,
	77	Q_STREAM_PACKET_CONTEXT_PACKET_SIZE;
	78
	79	static
	80	void __attribute__((constructor)) init_quarks(void)
	81	{
	82	Q_STREAM_PACKET_CONTEXT_TIMESTAMP_BEGIN = g_quark_from_static_string("stream.packet.context.timestamp_begin");
	83	Q_STREAM_PACKET_CONTEXT_TIMESTAMP_END = g_quark_from_static_string("stream.packet.context.timestamp_end");
	84	Q_STREAM_PACKET_CONTEXT_EVENTS_DISCARDED = g_quark_from_static_string("stream.packet.context.events_discarded");
	85	Q_STREAM_PACKET_CONTEXT_CONTENT_SIZE = g_quark_from_static_string("stream.packet.context.content_size");
	86	Q_STREAM_PACKET_CONTEXT_PACKET_SIZE = g_quark_from_static_string("stream.packet.context.packet_size");
	87	}
	88
	89	int print_field(struct definition *definition)
	90	{
	91	/* Print all fields in verbose mode */
	92	if (babeltrace_verbose)
	93	return 1;
	94
	95	/* Filter out part of the packet context */
	96	if (definition->path == Q_STREAM_PACKET_CONTEXT_TIMESTAMP_BEGIN)
	97	return 0;
	98	if (definition->path == Q_STREAM_PACKET_CONTEXT_TIMESTAMP_END)
	99	return 0;
	100	if (definition->path == Q_STREAM_PACKET_CONTEXT_EVENTS_DISCARDED)
	101	return 0;
	102	if (definition->path == Q_STREAM_PACKET_CONTEXT_CONTENT_SIZE)
	103	return 0;
	104	if (definition->path == Q_STREAM_PACKET_CONTEXT_PACKET_SIZE)
	105	return 0;
	106
	107	return 1;
	108	}
	109
cba1661c MD	110	static
	111	void set_field_names_print(struct ctf_text_stream_pos *pos, enum field_item item)
	112	{
	113	switch (item) {
	114	case ITEM_SCOPE:
	115	if (opt_all_field_names \|\| opt_scope_field_names)
	116	pos->print_names = 1;
	117	else
	118	pos->print_names = 0;
	119	break;
	120	case ITEM_HEADER:
	121	if (opt_all_field_names \|\| opt_header_field_names)
	122	pos->print_names = 1;
	123	else
	124	pos->print_names = 0;
	125	break;
	126	case ITEM_CONTEXT:
	127	if (opt_all_field_names \|\| opt_context_field_names)
	128	pos->print_names = 1;
	129	else
	130	pos->print_names = 0;
	131	break;
	132	case ITEM_PAYLOAD:
	133	if (opt_all_field_names \|\| opt_payload_field_names)
	134	pos->print_names = 1;
	135	else
	136	pos->print_names = 0;
	137
	138	break;
	139	default:
	140	assert(0);
	141	}
	142	}
	143
31262354 MD	144	static
31262354 MD	145	int ctf_text_write_event(struct stream_pos *ppos,
764af3f4	146	struct ctf_stream *stream)
31262354 MD	147	{
	148	struct ctf_text_stream_pos *pos =
	149	container_of(ppos, struct ctf_text_stream_pos, parent);
764af3f4	150	struct ctf_stream_class *stream_class = stream->stream_class;
fd3382e8	151	int field_nr_saved;
31262354	152	struct ctf_event *event_class;
42dc00b7	153	struct ctf_stream_event *event;
c87a8eb2	154	uint64_t id;
31262354 MD	155	int ret;
31262354 MD	156
c87a8eb2	157	id = stream->event_id;
31262354 MD	158
	159	if (id >= stream_class->events_by_id->len) {
	160	fprintf(stdout, "[error] Event id %" PRIu64 " is outside range.\n", id);
	161	return -EINVAL;
	162	}
e28d4618 MD	163	event = g_ptr_array_index(stream->events_by_id, id);
	164	if (!event) {
	165	fprintf(stdout, "[error] Event id %" PRIu64 " is unknown.\n", id);
	166	return -EINVAL;
	167	}
31262354	168	event_class = g_ptr_array_index(stream_class->events_by_id, id);
e28d4618	169	if (!event) {
31262354 MD	170	fprintf(stdout, "[error] Event id %" PRIu64 " is unknown.\n", id);
	171	return -EINVAL;
	172	}
	173
5e2eb0ae	174	if (stream->has_timestamp) {
cba1661c	175	set_field_names_print(pos, ITEM_HEADER);
be60c7fb MD	176	if (pos->print_names)
	177	fprintf(pos->fp, "timestamp = ");
	178	else
	179	fprintf(pos->fp, "[");
	180	fprintf(pos->fp, "%12" PRIu64, stream->timestamp);
	181	if (!pos->print_names)
	182	fprintf(pos->fp, "]");
aa6bffae	183
be60c7fb MD	184	if (pos->print_names)
	185	fprintf(pos->fp, ", ");
	186	else
	187	fprintf(pos->fp, " ");
	188	}
cba1661c	189	set_field_names_print(pos, ITEM_HEADER);
31262354 MD	190	if (pos->print_names)
31262354 MD	191	fprintf(pos->fp, "name = ");
8178fe48 MD	192	fprintf(pos->fp, "%s", g_quark_to_string(event_class->name));
8178fe48 MD	193	if (pos->print_names)
fd3382e8	194	pos->field_nr++;
8178fe48	195	else
fd3382e8	196	fprintf(pos->fp, ":");
31262354	197
e28d4618 MD	198	/* print cpuid field from packet context */
	199	if (stream->stream_packet_context) {
	200	if (pos->field_nr++ != 0)
	201	fprintf(pos->fp, ",");
cba1661c	202	set_field_names_print(pos, ITEM_SCOPE);
e28d4618 MD	203	if (pos->print_names)
	204	fprintf(pos->fp, " stream.packet.context =");
	205	field_nr_saved = pos->field_nr;
	206	pos->field_nr = 0;
cba1661c	207	set_field_names_print(pos, ITEM_CONTEXT);
e28d4618 MD	208	ret = generic_rw(ppos, &stream->stream_packet_context->p);
	209	if (ret)
	210	goto error;
	211	pos->field_nr = field_nr_saved;
	212	}
	213
764af3f4	214	/* Only show the event header in verbose mode */
e28d4618	215	if (babeltrace_verbose && stream->stream_event_header) {
fd3382e8 MD	216	if (pos->field_nr++ != 0)
fd3382e8 MD	217	fprintf(pos->fp, ",");
cba1661c	218	set_field_names_print(pos, ITEM_SCOPE);
31262354	219	if (pos->print_names)
fd3382e8 MD	220	fprintf(pos->fp, " stream.event.header =");
	221	field_nr_saved = pos->field_nr;
	222	pos->field_nr = 0;
cba1661c	223	set_field_names_print(pos, ITEM_CONTEXT);
e28d4618	224	ret = generic_rw(ppos, &stream->stream_event_header->p);
31262354 MD	225	if (ret)
31262354 MD	226	goto error;
fd3382e8	227	pos->field_nr = field_nr_saved;
31262354 MD	228	}
	229
	230	/* print stream-declared event context */
e28d4618	231	if (stream->stream_event_context) {
fd3382e8 MD	232	if (pos->field_nr++ != 0)
fd3382e8 MD	233	fprintf(pos->fp, ",");
cba1661c	234	set_field_names_print(pos, ITEM_SCOPE);
31262354	235	if (pos->print_names)
fd3382e8 MD	236	fprintf(pos->fp, " stream.event.context =");
	237	field_nr_saved = pos->field_nr;
	238	pos->field_nr = 0;
cba1661c	239	set_field_names_print(pos, ITEM_CONTEXT);
e28d4618	240	ret = generic_rw(ppos, &stream->stream_event_context->p);
31262354 MD	241	if (ret)
31262354 MD	242	goto error;
fd3382e8	243	pos->field_nr = field_nr_saved;
31262354 MD	244	}
	245
	246	/* print event-declared event context */
e28d4618	247	if (event->event_context) {
fd3382e8 MD	248	if (pos->field_nr++ != 0)
fd3382e8 MD	249	fprintf(pos->fp, ",");
cba1661c	250	set_field_names_print(pos, ITEM_SCOPE);
31262354	251	if (pos->print_names)
fd3382e8 MD	252	fprintf(pos->fp, " event.context =");
	253	field_nr_saved = pos->field_nr;
	254	pos->field_nr = 0;
cba1661c	255	set_field_names_print(pos, ITEM_CONTEXT);
e28d4618	256	ret = generic_rw(ppos, &event->event_context->p);
31262354 MD	257	if (ret)
31262354 MD	258	goto error;
fd3382e8	259	pos->field_nr = field_nr_saved;
31262354 MD	260	}
	261
	262	/* Read and print event payload */
e28d4618	263	if (event->event_fields) {
fd3382e8 MD	264	if (pos->field_nr++ != 0)
fd3382e8 MD	265	fprintf(pos->fp, ",");
cba1661c	266	set_field_names_print(pos, ITEM_SCOPE);
31262354	267	if (pos->print_names)
fd3382e8 MD	268	fprintf(pos->fp, " event.fields =");
	269	field_nr_saved = pos->field_nr;
	270	pos->field_nr = 0;
cba1661c	271	set_field_names_print(pos, ITEM_PAYLOAD);
e28d4618	272	ret = generic_rw(ppos, &event->event_fields->p);
31262354 MD	273	if (ret)
31262354 MD	274	goto error;
fd3382e8	275	pos->field_nr = field_nr_saved;
31262354	276	}
fd3382e8	277	/* newline */
31262354	278	fprintf(pos->fp, "\n");
fd3382e8	279	pos->field_nr = 0;
31262354 MD	280
	281	return 0;
	282
	283	error:
	284	fprintf(stdout, "[error] Unexpected end of stream. Either the trace data stream is corrupted or metadata description does not match data layout.\n");
	285	return ret;
	286	}
	287
	288
b086c01a JD	289	struct trace_descriptor ctf_text_open_trace(const char path, int flags,
b086c01a JD	290	void (move_pos_slow)(struct ctf_stream_pos pos, size_t offset,
ae23d232	291	int whence), FILE *metadata_fp)
642ec66d MD	292	{
	293	struct ctf_text_stream_pos *pos;
	294	FILE *fp;
	295
	296	pos = g_new0(struct ctf_text_stream_pos, 1);
	297
	298	switch (flags & O_ACCMODE) {
989c73bc	299	case O_RDWR:
b61922b5	300	if (!path)
6cf7957b MD	301	fp = stdout;
	302	else
	303	fp = fopen(path, "w");
642ec66d MD	304	if (!fp)
	305	goto error;
	306	pos->fp = fp;
	307	pos->parent.rw_table = write_dispatch_table;
31262354	308	pos->parent.event_cb = ctf_text_write_event;
cba1661c	309	pos->print_names = 0;
642ec66d MD	310	break;
	311	case O_RDONLY:
	312	default:
	313	fprintf(stdout, "[error] Incorrect open flags.\n");
	314	goto error;
	315	}
	316
	317	return &pos->trace_descriptor;
	318	error:
	319	g_free(pos);
	320	return NULL;
	321	}
	322
	323	void ctf_text_close_trace(struct trace_descriptor *td)
	324	{
	325	struct ctf_text_stream_pos *pos =
	326	container_of(td, struct ctf_text_stream_pos, trace_descriptor);
	327	fclose(pos->fp);
	328	g_free(pos);
	329	}
	330
	331	void __attribute__((constructor)) ctf_text_init(void)
	332	{
	333	int ret;
	334
	335	ctf_text_format.name = g_quark_from_static_string("text");
	336	ret = bt_register_format(&ctf_text_format);
	337	assert(!ret);
	338	}
	339
	340	/* TODO: finalize */