[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,
	opt_trace_name;

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, " ");
	}
	if ((opt_trace_name || opt_all_field_names) && stream_class->trace->path[0] != '\0') {
		set_field_names_print(pos, ITEM_HEADER);
		if (pos->print_names)
			fprintf(pos->fp, "trace = ");

		fprintf(pos->fp, "%s", stream_class->trace->path);

		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,
82662ad4 MD	41	opt_payload_field_names,
82662ad4 MD	42	opt_trace_name;
cba1661c MD	43
	44	enum field_item {
	45	ITEM_SCOPE,
	46	ITEM_HEADER,
	47	ITEM_CONTEXT,
	48	ITEM_PAYLOAD,
	49	};
b88d6e85	50
b086c01a JD	51	struct trace_descriptor ctf_text_open_trace(const char path, int flags,
b086c01a JD	52	void (move_pos_slow)(struct ctf_stream_pos pos, size_t offset,
ae23d232	53	int whence), FILE *metadata_fp);
642ec66d MD	54	void ctf_text_close_trace(struct trace_descriptor *descriptor);
642ec66d MD	55
642ec66d MD	56	static
	57	rw_dispatch write_dispatch_table[] = {
	58	[ CTF_TYPE_INTEGER ] = ctf_text_integer_write,
	59	[ CTF_TYPE_FLOAT ] = ctf_text_float_write,
	60	[ CTF_TYPE_ENUM ] = ctf_text_enum_write,
	61	[ CTF_TYPE_STRING ] = ctf_text_string_write,
	62	[ CTF_TYPE_STRUCT ] = ctf_text_struct_write,
	63	[ CTF_TYPE_VARIANT ] = ctf_text_variant_write,
	64	[ CTF_TYPE_ARRAY ] = ctf_text_array_write,
	65	[ CTF_TYPE_SEQUENCE ] = ctf_text_sequence_write,
	66	};
	67
	68	static
	69	struct format ctf_text_format = {
	70	.open_trace = ctf_text_open_trace,
	71	.close_trace = ctf_text_close_trace,
	72	};
	73
d335f0f7 MD	74	static GQuark Q_STREAM_PACKET_CONTEXT_TIMESTAMP_BEGIN,
	75	Q_STREAM_PACKET_CONTEXT_TIMESTAMP_END,
	76	Q_STREAM_PACKET_CONTEXT_EVENTS_DISCARDED,
	77	Q_STREAM_PACKET_CONTEXT_CONTENT_SIZE,
	78	Q_STREAM_PACKET_CONTEXT_PACKET_SIZE;
	79
	80	static
	81	void __attribute__((constructor)) init_quarks(void)
	82	{
	83	Q_STREAM_PACKET_CONTEXT_TIMESTAMP_BEGIN = g_quark_from_static_string("stream.packet.context.timestamp_begin");
	84	Q_STREAM_PACKET_CONTEXT_TIMESTAMP_END = g_quark_from_static_string("stream.packet.context.timestamp_end");
	85	Q_STREAM_PACKET_CONTEXT_EVENTS_DISCARDED = g_quark_from_static_string("stream.packet.context.events_discarded");
	86	Q_STREAM_PACKET_CONTEXT_CONTENT_SIZE = g_quark_from_static_string("stream.packet.context.content_size");
	87	Q_STREAM_PACKET_CONTEXT_PACKET_SIZE = g_quark_from_static_string("stream.packet.context.packet_size");
	88	}
	89
	90	int print_field(struct definition *definition)
	91	{
	92	/* Print all fields in verbose mode */
	93	if (babeltrace_verbose)
	94	return 1;
	95
	96	/* Filter out part of the packet context */
	97	if (definition->path == Q_STREAM_PACKET_CONTEXT_TIMESTAMP_BEGIN)
	98	return 0;
	99	if (definition->path == Q_STREAM_PACKET_CONTEXT_TIMESTAMP_END)
	100	return 0;
	101	if (definition->path == Q_STREAM_PACKET_CONTEXT_EVENTS_DISCARDED)
	102	return 0;
	103	if (definition->path == Q_STREAM_PACKET_CONTEXT_CONTENT_SIZE)
	104	return 0;
	105	if (definition->path == Q_STREAM_PACKET_CONTEXT_PACKET_SIZE)
	106	return 0;
	107
	108	return 1;
	109	}
	110
cba1661c MD	111	static
	112	void set_field_names_print(struct ctf_text_stream_pos *pos, enum field_item item)
	113	{
	114	switch (item) {
	115	case ITEM_SCOPE:
	116	if (opt_all_field_names \|\| opt_scope_field_names)
	117	pos->print_names = 1;
	118	else
	119	pos->print_names = 0;
	120	break;
	121	case ITEM_HEADER:
	122	if (opt_all_field_names \|\| opt_header_field_names)
	123	pos->print_names = 1;
	124	else
	125	pos->print_names = 0;
	126	break;
	127	case ITEM_CONTEXT:
	128	if (opt_all_field_names \|\| opt_context_field_names)
	129	pos->print_names = 1;
	130	else
	131	pos->print_names = 0;
	132	break;
	133	case ITEM_PAYLOAD:
	134	if (opt_all_field_names \|\| opt_payload_field_names)
	135	pos->print_names = 1;
	136	else
	137	pos->print_names = 0;
	138
	139	break;
	140	default:
	141	assert(0);
	142	}
	143	}
	144
31262354 MD	145	static
31262354 MD	146	int ctf_text_write_event(struct stream_pos *ppos,
764af3f4	147	struct ctf_stream *stream)
31262354 MD	148	{
	149	struct ctf_text_stream_pos *pos =
	150	container_of(ppos, struct ctf_text_stream_pos, parent);
764af3f4	151	struct ctf_stream_class *stream_class = stream->stream_class;
fd3382e8	152	int field_nr_saved;
31262354	153	struct ctf_event *event_class;
42dc00b7	154	struct ctf_stream_event *event;
c87a8eb2	155	uint64_t id;
31262354 MD	156	int ret;
31262354 MD	157
c87a8eb2	158	id = stream->event_id;
31262354 MD	159
	160	if (id >= stream_class->events_by_id->len) {
	161	fprintf(stdout, "[error] Event id %" PRIu64 " is outside range.\n", id);
	162	return -EINVAL;
	163	}
e28d4618 MD	164	event = g_ptr_array_index(stream->events_by_id, id);
	165	if (!event) {
	166	fprintf(stdout, "[error] Event id %" PRIu64 " is unknown.\n", id);
	167	return -EINVAL;
	168	}
31262354	169	event_class = g_ptr_array_index(stream_class->events_by_id, id);
e28d4618	170	if (!event) {
31262354 MD	171	fprintf(stdout, "[error] Event id %" PRIu64 " is unknown.\n", id);
	172	return -EINVAL;
	173	}
	174
5e2eb0ae	175	if (stream->has_timestamp) {
cba1661c	176	set_field_names_print(pos, ITEM_HEADER);
be60c7fb MD	177	if (pos->print_names)
	178	fprintf(pos->fp, "timestamp = ");
	179	else
	180	fprintf(pos->fp, "[");
	181	fprintf(pos->fp, "%12" PRIu64, stream->timestamp);
	182	if (!pos->print_names)
	183	fprintf(pos->fp, "]");
aa6bffae	184
be60c7fb MD	185	if (pos->print_names)
	186	fprintf(pos->fp, ", ");
	187	else
	188	fprintf(pos->fp, " ");
	189	}
82662ad4 MD	190	if ((opt_trace_name \|\| opt_all_field_names) && stream_class->trace->path[0] != '\0') {
	191	set_field_names_print(pos, ITEM_HEADER);
	192	if (pos->print_names)
	193	fprintf(pos->fp, "trace = ");
	194
	195	fprintf(pos->fp, "%s", stream_class->trace->path);
	196
	197	if (pos->print_names)
	198	fprintf(pos->fp, ", ");
	199	else
	200	fprintf(pos->fp, " ");
	201	}
cba1661c	202	set_field_names_print(pos, ITEM_HEADER);
31262354 MD	203	if (pos->print_names)
31262354 MD	204	fprintf(pos->fp, "name = ");
8178fe48 MD	205	fprintf(pos->fp, "%s", g_quark_to_string(event_class->name));
8178fe48 MD	206	if (pos->print_names)
fd3382e8	207	pos->field_nr++;
8178fe48	208	else
fd3382e8	209	fprintf(pos->fp, ":");
31262354	210
e28d4618 MD	211	/* print cpuid field from packet context */
	212	if (stream->stream_packet_context) {
	213	if (pos->field_nr++ != 0)
	214	fprintf(pos->fp, ",");
cba1661c	215	set_field_names_print(pos, ITEM_SCOPE);
e28d4618 MD	216	if (pos->print_names)
	217	fprintf(pos->fp, " stream.packet.context =");
	218	field_nr_saved = pos->field_nr;
	219	pos->field_nr = 0;
cba1661c	220	set_field_names_print(pos, ITEM_CONTEXT);
e28d4618 MD	221	ret = generic_rw(ppos, &stream->stream_packet_context->p);
	222	if (ret)
	223	goto error;
	224	pos->field_nr = field_nr_saved;
	225	}
	226
764af3f4	227	/* Only show the event header in verbose mode */
e28d4618	228	if (babeltrace_verbose && stream->stream_event_header) {
fd3382e8 MD	229	if (pos->field_nr++ != 0)
fd3382e8 MD	230	fprintf(pos->fp, ",");
cba1661c	231	set_field_names_print(pos, ITEM_SCOPE);
31262354	232	if (pos->print_names)
fd3382e8 MD	233	fprintf(pos->fp, " stream.event.header =");
	234	field_nr_saved = pos->field_nr;
	235	pos->field_nr = 0;
cba1661c	236	set_field_names_print(pos, ITEM_CONTEXT);
e28d4618	237	ret = generic_rw(ppos, &stream->stream_event_header->p);
31262354 MD	238	if (ret)
31262354 MD	239	goto error;
fd3382e8	240	pos->field_nr = field_nr_saved;
31262354 MD	241	}
	242
	243	/* print stream-declared event context */
e28d4618	244	if (stream->stream_event_context) {
fd3382e8 MD	245	if (pos->field_nr++ != 0)
fd3382e8 MD	246	fprintf(pos->fp, ",");
cba1661c	247	set_field_names_print(pos, ITEM_SCOPE);
31262354	248	if (pos->print_names)
fd3382e8 MD	249	fprintf(pos->fp, " stream.event.context =");
	250	field_nr_saved = pos->field_nr;
	251	pos->field_nr = 0;
cba1661c	252	set_field_names_print(pos, ITEM_CONTEXT);
e28d4618	253	ret = generic_rw(ppos, &stream->stream_event_context->p);
31262354 MD	254	if (ret)
31262354 MD	255	goto error;
fd3382e8	256	pos->field_nr = field_nr_saved;
31262354 MD	257	}
	258
	259	/* print event-declared event context */
e28d4618	260	if (event->event_context) {
fd3382e8 MD	261	if (pos->field_nr++ != 0)
fd3382e8 MD	262	fprintf(pos->fp, ",");
cba1661c	263	set_field_names_print(pos, ITEM_SCOPE);
31262354	264	if (pos->print_names)
fd3382e8 MD	265	fprintf(pos->fp, " event.context =");
	266	field_nr_saved = pos->field_nr;
	267	pos->field_nr = 0;
cba1661c	268	set_field_names_print(pos, ITEM_CONTEXT);
e28d4618	269	ret = generic_rw(ppos, &event->event_context->p);
31262354 MD	270	if (ret)
31262354 MD	271	goto error;
fd3382e8	272	pos->field_nr = field_nr_saved;
31262354 MD	273	}
	274
	275	/* Read and print event payload */
e28d4618	276	if (event->event_fields) {
fd3382e8 MD	277	if (pos->field_nr++ != 0)
fd3382e8 MD	278	fprintf(pos->fp, ",");
cba1661c	279	set_field_names_print(pos, ITEM_SCOPE);
31262354	280	if (pos->print_names)
fd3382e8 MD	281	fprintf(pos->fp, " event.fields =");
	282	field_nr_saved = pos->field_nr;
	283	pos->field_nr = 0;
cba1661c	284	set_field_names_print(pos, ITEM_PAYLOAD);
e28d4618	285	ret = generic_rw(ppos, &event->event_fields->p);
31262354 MD	286	if (ret)
31262354 MD	287	goto error;
fd3382e8	288	pos->field_nr = field_nr_saved;
31262354	289	}
fd3382e8	290	/* newline */
31262354	291	fprintf(pos->fp, "\n");
fd3382e8	292	pos->field_nr = 0;
31262354 MD	293
	294	return 0;
	295
	296	error:
	297	fprintf(stdout, "[error] Unexpected end of stream. Either the trace data stream is corrupted or metadata description does not match data layout.\n");
	298	return ret;
	299	}
	300
	301
b086c01a JD	302	struct trace_descriptor ctf_text_open_trace(const char path, int flags,
b086c01a JD	303	void (move_pos_slow)(struct ctf_stream_pos pos, size_t offset,
ae23d232	304	int whence), FILE *metadata_fp)
642ec66d MD	305	{
	306	struct ctf_text_stream_pos *pos;
	307	FILE *fp;
	308
	309	pos = g_new0(struct ctf_text_stream_pos, 1);
	310
	311	switch (flags & O_ACCMODE) {
989c73bc	312	case O_RDWR:
b61922b5	313	if (!path)
6cf7957b MD	314	fp = stdout;
	315	else
	316	fp = fopen(path, "w");
642ec66d MD	317	if (!fp)
	318	goto error;
	319	pos->fp = fp;
	320	pos->parent.rw_table = write_dispatch_table;
31262354	321	pos->parent.event_cb = ctf_text_write_event;
cba1661c	322	pos->print_names = 0;
642ec66d MD	323	break;
	324	case O_RDONLY:
	325	default:
	326	fprintf(stdout, "[error] Incorrect open flags.\n");
	327	goto error;
	328	}
	329
	330	return &pos->trace_descriptor;
	331	error:
	332	g_free(pos);
	333	return NULL;
	334	}
	335
	336	void ctf_text_close_trace(struct trace_descriptor *td)
	337	{
	338	struct ctf_text_stream_pos *pos =
	339	container_of(td, struct ctf_text_stream_pos, trace_descriptor);
	340	fclose(pos->fp);
	341	g_free(pos);
	342	}
	343
	344	void __attribute__((constructor)) ctf_text_init(void)
	345	{
	346	int ret;
	347
	348	ctf_text_format.name = g_quark_from_static_string("text");
	349	ret = bt_register_format(&ctf_text_format);
	350	assert(!ret);
	351	}
	352
	353	/* TODO: finalize */