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git.proxmox.com Git - mirror_frr.git/blob - lib/csv.c
2 * Copyright (C) 2013 Cumulus Networks, Inc.
4 * This file is part of Quagga.
6 * Quagga is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
11 * Quagga is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; see the file COPYING; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
25 #include <sys/queue.h>
33 #define log_error(fmt, ...) \
36 fprintf(stderr, "%s:%d:%s(): " fmt, __FILE__, \
37 __LINE__, __func__, ##__VA_ARGS__); \
40 #define log_verbose(fmt, ...) \
43 fprintf(stderr, "%s:%d:%s(): " fmt, __FILE__, \
44 __LINE__, __func__, __VA_ARGS__); \
47 struct _csv_field_t_
{
48 TAILQ_ENTRY(_csv_field_t_
) next_field
;
53 struct _csv_record_t_
{
54 TAILQ_HEAD(, _csv_field_t_
) fields
;
55 TAILQ_ENTRY(_csv_record_t_
) next_record
;
61 TAILQ_HEAD(, _csv_record_t_
) records
;
70 int csvlen(csv_t
*csv
)
72 return (csv
->csv_len
);
75 csv_t
*csv_init(csv_t
*csv
, char *buf
, int buflen
)
78 csv
= malloc(sizeof(csv_t
));
80 log_error("CSV Malloc failed\n");
84 memset(csv
, 0, sizeof(csv_t
));
88 TAILQ_INIT(&(csv
->records
));
92 void csv_clean(csv_t
*csv
)
97 rec
= TAILQ_FIRST(&(csv
->records
));
99 rec_n
= TAILQ_NEXT(rec
, next_record
);
100 csv_remove_record(csv
, rec
);
105 void csv_free(csv_t
*csv
)
112 static void csv_init_record(csv_record_t
*record
)
114 TAILQ_INIT(&(record
->fields
));
118 csv_record_t
*csv_record_iter(csv_t
*csv
)
120 return (TAILQ_FIRST(&(csv
->records
)));
123 csv_record_t
*csv_record_iter_next(csv_record_t
*rec
)
127 return (TAILQ_NEXT(rec
, next_record
));
130 char *csv_field_iter(csv_record_t
*rec
, csv_field_t
**fld
)
134 *fld
= TAILQ_FIRST(&(rec
->fields
));
135 return ((*fld
)->field
);
138 char *csv_field_iter_next(csv_field_t
**fld
)
140 *fld
= TAILQ_NEXT(*fld
, next_field
);
141 if ((*fld
) == NULL
) {
144 return ((*fld
)->field
);
147 int csv_field_len(csv_field_t
*fld
)
150 return fld
->field_len
;
155 static void csv_decode_record(csv_record_t
*rec
)
157 char *curr
= rec
->record
;
161 field
= strpbrk(curr
, ",");
162 while (field
!= NULL
) {
163 fld
= malloc(sizeof(csv_field_t
));
165 TAILQ_INSERT_TAIL(&(rec
->fields
), fld
, next_field
);
167 fld
->field_len
= field
- curr
;
170 field
= strpbrk(curr
, ",");
172 field
= strstr(curr
, "\n");
176 fld
= malloc(sizeof(csv_field_t
));
179 fld
->field_len
= field
- curr
;
180 TAILQ_INSERT_TAIL(&(rec
->fields
), fld
, next_field
);
184 static csv_field_t
*csv_add_field_to_record(csv_t
*csv
, csv_record_t
*rec
,
188 char *str
= rec
->record
;
189 int rlen
= rec
->rec_len
;
190 int blen
= csv
->buflen
;
192 fld
= malloc(sizeof(csv_field_t
));
194 log_error("field malloc failed\n");
195 /* more cleanup needed */
198 TAILQ_INSERT_TAIL(&(rec
->fields
), fld
, next_field
);
199 fld
->field
= str
+ rlen
;
200 fld
->field_len
= snprintf((str
+ rlen
), (blen
- rlen
), "%s", col
);
201 rlen
+= fld
->field_len
;
206 csv_record_t
*csv_encode(csv_t
*csv
, int count
, ...)
210 char *buf
= csv
->buf
;
211 int len
= csv
->buflen
;
212 int pointer
= csv
->pointer
;
221 /* allocate sufficient buffer */
222 str
= (char *)malloc(csv
->buflen
);
224 log_error("field str malloc failed\n");
229 va_start(list
, count
);
230 rec
= malloc(sizeof(csv_record_t
));
232 log_error("record malloc failed\n");
238 csv_init_record(rec
);
240 TAILQ_INSERT_TAIL(&(csv
->records
), rec
, next_record
);
244 * Iterate through the fields passed as a variable list and add them
246 for (tempc
= 0; tempc
< count
; tempc
++) {
247 col
= va_arg(list
, char *);
248 fld
= csv_add_field_to_record(csv
, rec
, col
);
250 log_error("fld malloc failed\n");
251 csv_remove_record(csv
, rec
);
255 if (tempc
< (count
- 1)) {
256 rec
->rec_len
+= snprintf((str
+ rec
->rec_len
),
257 (len
- rec
->rec_len
), ",");
261 snprintf((str
+ rec
->rec_len
), (len
- rec
->rec_len
), "\n");
263 csv
->csv_len
+= rec
->rec_len
;
264 csv
->pointer
+= rec
->rec_len
;
268 int csv_num_records(csv_t
*csv
)
271 return csv
->num_recs
;
276 csv_record_t
*csv_encode_record(csv_t
*csv
, csv_record_t
*rec
, int count
, ...)
282 csv_field_t
*fld
= NULL
;
285 va_start(list
, count
);
286 str
= csv_field_iter(rec
, &fld
);
292 for (tempc
= 0; tempc
< count
; tempc
++) {
293 col
= va_arg(list
, char *);
294 for (i
= 0; i
< fld
->field_len
; i
++) {
297 str
= csv_field_iter_next(&fld
);
303 csv_record_t
*csv_append_record(csv_t
*csv
, csv_record_t
*rec
, int count
, ...)
307 int len
= csv
->buflen
, tlen
;
313 /* not only works with discrete bufs */
318 /* create a new rec */
319 rec
= calloc(1, sizeof(csv_record_t
));
321 log_error("record malloc failed\n");
324 csv_init_record(rec
);
325 rec
->record
= calloc(1, csv
->buflen
);
327 log_error("field str malloc failed\n");
331 csv_insert_record(csv
, rec
);
336 va_start(list
, count
);
338 if (rec
->rec_len
&& (str
[rec
->rec_len
- 1] == '\n'))
339 str
[rec
->rec_len
- 1] = ',';
342 * Iterate through the fields passed as a variable list and add them
345 for (tempc
= 0; tempc
< count
; tempc
++) {
346 col
= va_arg(list
, char *);
347 fld
= csv_add_field_to_record(csv
, rec
, col
);
349 log_error("fld malloc failed\n");
352 if (tempc
< (count
- 1)) {
353 rec
->rec_len
+= snprintf((str
+ rec
->rec_len
),
354 (len
- rec
->rec_len
), ",");
358 snprintf((str
+ rec
->rec_len
), (len
- rec
->rec_len
), "\n");
360 csv
->csv_len
+= (rec
->rec_len
- tlen
);
361 csv
->pointer
+= (rec
->rec_len
- tlen
);
365 int csv_serialize(csv_t
*csv
, char *msgbuf
, int msglen
)
373 rec
= csv_record_iter(csv
);
374 while (rec
!= NULL
) {
375 if ((offset
+ rec
->rec_len
) >= msglen
)
377 offset
+= sprintf(&msgbuf
[offset
], "%s", rec
->record
);
378 rec
= csv_record_iter_next(rec
);
384 void csv_clone_record(csv_t
*csv
, csv_record_t
*in_rec
, csv_record_t
**out_rec
)
389 /* first check if rec belongs to this csv */
390 if (!csv_is_record_valid(csv
, in_rec
)) {
391 log_error("rec not in this csv\n");
395 /* only works with csv with discrete bufs */
398 "un-supported for this csv type - single buf detected\n");
402 /* create a new rec */
403 rec
= calloc(1, sizeof(csv_record_t
));
405 log_error("record malloc failed\n");
408 csv_init_record(rec
);
409 curr
= calloc(1, csv
->buflen
);
411 log_error("field str malloc failed\n");
416 rec
->rec_len
= in_rec
->rec_len
;
417 strcpy(rec
->record
, in_rec
->record
);
419 /* decode record into fields */
420 csv_decode_record(rec
);
425 void csv_remove_record(csv_t
*csv
, csv_record_t
*rec
)
427 csv_field_t
*fld
= NULL
, *p_fld
;
429 /* first check if rec belongs to this csv */
430 if (!csv_is_record_valid(csv
, rec
)) {
431 log_error("rec not in this csv\n");
436 csv_field_iter(rec
, &fld
);
439 csv_field_iter_next(&fld
);
440 TAILQ_REMOVE(&(rec
->fields
), p_fld
, next_field
);
444 TAILQ_REMOVE(&(csv
->records
), rec
, next_record
);
447 csv
->csv_len
-= rec
->rec_len
;
448 csv
->pointer
-= rec
->rec_len
;
454 void csv_insert_record(csv_t
*csv
, csv_record_t
*rec
)
456 /* first check if rec already in csv */
457 if (csv_is_record_valid(csv
, rec
)) {
458 log_error("rec already in this csv\n");
462 /* we can only insert records if no buf was supplied during csv init */
465 "un-supported for this csv type - single buf detected\n");
469 /* do we go beyond the max buf set for this csv ?*/
470 if ((csv
->csv_len
+ rec
->rec_len
) > csv
->buflen
) {
471 log_error("cannot insert - exceeded buf size\n");
475 TAILQ_INSERT_TAIL(&(csv
->records
), rec
, next_record
);
477 csv
->csv_len
+= rec
->rec_len
;
478 csv
->pointer
+= rec
->rec_len
;
481 csv_record_t
*csv_concat_record(csv_t
*csv
, csv_record_t
*rec1
,
488 /* first check if rec1 and rec2 belong to this csv */
489 if (!csv_is_record_valid(csv
, rec1
)
490 || !csv_is_record_valid(csv
, rec2
)) {
491 log_error("rec1 and/or rec2 invalid\n");
495 /* we can only concat records if no buf was supplied during csv init */
498 "un-supported for this csv type - single buf detected\n");
502 /* create a new rec */
503 rec
= calloc(1, sizeof(csv_record_t
));
505 log_error("record malloc failed\n");
508 csv_init_record(rec
);
510 curr
= (char *)calloc(1, csv
->buflen
);
512 log_error("field str malloc failed\n");
517 /* concat the record string */
518 ret
= strstr(rec1
->record
, "\n");
520 log_error("rec1 str not properly formatted\n");
524 snprintf(curr
, (int)(ret
- rec1
->record
+ 1), "%s", rec1
->record
);
527 ret
= strstr(rec2
->record
, "\n");
529 log_error("rec2 str not properly formatted\n");
533 snprintf((curr
+ strlen(curr
)), (int)(ret
- rec2
->record
+ 1), "%s",
536 rec
->rec_len
= strlen(curr
);
540 > (csv
->csv_len
- rec1
->rec_len
- rec2
->rec_len
+ rec
->rec_len
));
542 /* decode record into fields */
543 csv_decode_record(rec
);
545 /* now remove rec1 and rec2 and insert rec into this csv */
546 csv_remove_record(csv
, rec1
);
547 csv_remove_record(csv
, rec2
);
548 csv_insert_record(csv
, rec
);
559 void csv_decode(csv_t
*csv
, char *inbuf
)
565 buf
= (inbuf
) ? inbuf
: csv
->buf
;
566 pos
= strpbrk(buf
, "\n");
567 while (pos
!= NULL
) {
568 rec
= calloc(1, sizeof(csv_record_t
));
571 csv_init_record(rec
);
572 TAILQ_INSERT_TAIL(&(csv
->records
), rec
, next_record
);
577 rec
->record
= calloc(1, csv
->buflen
);
579 log_error("field str malloc failed\n");
582 strncpy(rec
->record
, buf
, pos
- buf
+ 1);
584 rec
->rec_len
= pos
- buf
+ 1;
585 /* decode record into fields */
586 csv_decode_record(rec
);
588 pos
= strpbrk(buf
, "\n");
592 int csv_is_record_valid(csv_t
*csv
, csv_record_t
*in_rec
)
597 rec
= csv_record_iter(csv
);
603 rec
= csv_record_iter_next(rec
);
609 void csv_dump(csv_t
*csv
)
615 rec
= csv_record_iter(csv
);
616 while (rec
!= NULL
) {
617 str
= csv_field_iter(rec
, &fld
);
618 while (str
!= NULL
) {
619 fprintf(stderr
, "%s\n", str
);
620 str
= csv_field_iter_next(&fld
);
622 rec
= csv_record_iter_next(rec
);
628 static int get_memory_usage(pid_t pid
)
631 char buf
[4096], status_child
[BUFSIZ
];
634 sprintf(status_child
, "/proc/%d/status", pid
);
635 if ((fd
= open(status_child
, O_RDONLY
)) < 0)
644 vm
= strstr(buf
, "VmData:");
646 sscanf(vm
, "%*s %d", &data
);
648 vm
= strstr(buf
, "VmStk:");
650 sscanf(vm
, "%*s %d", &stack
);
662 char hdr1
[32], hdr2
[32];
664 log_verbose("Mem: %d\n", get_memory_usage(getpid()));
665 csv_init(&csv
, buf
, 256);
666 sprintf(hdr1
, "%4d", 0);
667 sprintf(hdr2
, "%4d", 1);
668 log_verbose("(%zu/%zu/%d/%d)\n", strlen(hdr1
), strlen(hdr2
), atoi(hdr1
),
670 rec
= csv_encode(&csv
, 2, hdr1
, hdr2
);
671 csv_encode(&csv
, 4, "name", "age", "sex", "hei");
672 csv_encode(&csv
, 3, NULL
, "0", NULL
);
673 csv_encode(&csv
, 2, "p", "35");
674 for (i
= 0; i
< 50; i
++) {
675 csv_encode(&csv
, 2, "p", "10");
677 csv_encode(&csv
, 2, "pdfadfadfadsadsaddfdfdsfdsd", "35444554545454545");
678 log_verbose("%s\n", buf
);
679 sprintf(hdr1
, "%4d", csv
.csv_len
);
680 sprintf(hdr2
, "%4d", 1);
681 log_verbose("(%zu/%zu/%d/%d)\n", strlen(hdr1
), strlen(hdr2
), atoi(hdr1
),
683 rec
= csv_encode_record(&csv
, rec
, 2, hdr1
, hdr2
);
684 log_verbose("(%d/%d)\n%s\n", rec
->rec_len
, csv
.csv_len
, buf
);
686 log_verbose("Mem: %d\n", get_memory_usage(getpid()));
688 log_verbose("Mem: %d\n", get_memory_usage(getpid()));
689 csv_init(&csv
, buf
, 256);
690 csv_decode(&csv
, NULL
);
691 log_verbose("%s", "AFTER DECODE\n");
694 log_verbose("Mem: %d\n", get_memory_usage(getpid()));