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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
17 * along with Quagga; see the file COPYING. If not, write to the Free
18 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
26 #include <sys/queue.h>
34 #define log_error(fmt, ...) \
35 do { if (DEBUG_E) fprintf(stderr, "%s:%d:%s(): " fmt, __FILE__, \
36 __LINE__, __func__, ##__VA_ARGS__); } while (0)
38 #define log_verbose(fmt, ...) \
39 do { if (DEBUG_V) fprintf(stderr, "%s:%d:%s(): " fmt, __FILE__, \
40 __LINE__, __func__, __VA_ARGS__); } while (0)
42 struct _csv_field_t_
{
43 TAILQ_ENTRY(_csv_field_t_
) next_field
;
48 struct _csv_record_t_
{
49 TAILQ_HEAD(, _csv_field_t_
) fields
;
50 TAILQ_ENTRY(_csv_record_t_
) next_record
;
56 TAILQ_HEAD(, _csv_record_t_
) records
;
68 return (csv
->csv_len
);
77 csv
= malloc(sizeof(csv_t
));
79 log_error("CSV Malloc failed\n");
83 memset(csv
, 0, sizeof(csv_t
));
87 TAILQ_INIT(&(csv
->records
));
92 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
);
106 csv_free (csv_t
*csv
)
114 csv_init_record (csv_record_t
*record
)
116 TAILQ_INIT(&(record
->fields
));
121 csv_record_iter (csv_t
*csv
)
123 return(TAILQ_FIRST(&(csv
->records
)));
127 csv_record_iter_next (csv_record_t
*rec
)
129 if(!rec
) return NULL
;
130 return(TAILQ_NEXT(rec
, next_record
));
134 csv_field_iter (csv_record_t
*rec
,
137 if(!rec
) return NULL
;
138 *fld
= TAILQ_FIRST(&(rec
->fields
));
139 return ((*fld
)->field
);
143 csv_field_iter_next (csv_field_t
**fld
)
145 *fld
= TAILQ_NEXT(*fld
, next_field
);
146 if ((*fld
) == NULL
) {
149 return ((*fld
)->field
);
153 csv_field_len(csv_field_t
*fld
)
156 return fld
->field_len
;
162 csv_decode_record(csv_record_t
*rec
)
164 char *curr
= rec
->record
;
168 field
= strpbrk(curr
, ",");
169 while (field
!= NULL
) {
170 fld
= malloc(sizeof(csv_field_t
));
172 TAILQ_INSERT_TAIL(&(rec
->fields
), fld
, next_field
);
174 fld
->field_len
= field
-curr
;
177 field
= strpbrk(curr
, ",");
179 field
= strstr(curr
, "\n");
183 fld
= malloc(sizeof(csv_field_t
));
186 fld
->field_len
= field
-curr
;
187 TAILQ_INSERT_TAIL(&(rec
->fields
), fld
, next_field
);
192 csv_add_field_to_record(csv_t
*csv
,
197 char *str
= rec
->record
;
198 int rlen
= rec
->rec_len
;
199 int blen
= csv
->buflen
;
201 fld
= malloc(sizeof(csv_field_t
));
203 log_error("field malloc failed\n");
204 /* more cleanup needed */
207 TAILQ_INSERT_TAIL(&(rec
->fields
), fld
, next_field
);
208 fld
->field
= str
+rlen
;
209 fld
->field_len
= snprintf((str
+rlen
), (blen
- rlen
), "%s", col
);
210 rlen
+= fld
->field_len
;
216 csv_encode (csv_t
*csv
,
222 char *buf
= csv
->buf
;
223 int len
= csv
->buflen
;
224 int pointer
= csv
->pointer
;
233 /* allocate sufficient buffer */
234 str
= (char *)malloc(csv
->buflen
);
236 log_error("field str malloc failed\n");
241 va_start(list
, count
);
242 rec
= malloc(sizeof(csv_record_t
));
244 log_error("record malloc failed\n");
250 csv_init_record(rec
);
252 TAILQ_INSERT_TAIL(&(csv
->records
), rec
, next_record
);
256 * Iterate through the fields passed as a variable list and add them
258 for (tempc
= 0; tempc
< count
; tempc
++) {
259 col
= va_arg(list
, char *);
260 fld
= csv_add_field_to_record(csv
, rec
, col
);
262 log_error("fld malloc failed\n");
263 csv_remove_record(csv
, rec
);
267 if (tempc
< (count
- 1)) {
268 rec
->rec_len
+= snprintf((str
+rec
->rec_len
), (len
- rec
->rec_len
), ",");
271 rec
->rec_len
+= snprintf((str
+rec
->rec_len
), (len
- rec
->rec_len
), "\n");
273 csv
->csv_len
+= rec
->rec_len
;
274 csv
->pointer
+= rec
->rec_len
;
279 csv_num_records (csv_t
*csv
)
282 return csv
->num_recs
;
288 csv_encode_record (csv_t
*csv
,
297 csv_field_t
*fld
= NULL
;
300 va_start(list
, count
);
301 str
= csv_field_iter(rec
, &fld
);
302 for (tempc
= 0; tempc
< count
; tempc
++) {
303 col
= va_arg(list
, char *);
304 for (i
= 0; i
< fld
->field_len
; i
++) {
307 str
= csv_field_iter_next(&fld
);
314 csv_append_record (csv_t
*csv
,
321 int len
= csv
->buflen
, tlen
;
327 /* not only works with discrete bufs */
332 /* create a new rec */
333 rec
= calloc(1, sizeof(csv_record_t
));
335 log_error("record malloc failed\n");
338 csv_init_record(rec
);
339 rec
->record
= calloc(1, csv
->buflen
);
341 log_error("field str malloc failed\n");
345 csv_insert_record(csv
, rec
);
350 va_start(list
, count
);
352 if (rec
->rec_len
&& (str
[rec
->rec_len
-1] == '\n'))
353 str
[rec
->rec_len
-1] = ',';
356 * Iterate through the fields passed as a variable list and add them
359 for (tempc
= 0; tempc
< count
; tempc
++) {
360 col
= va_arg(list
, char *);
361 fld
= csv_add_field_to_record(csv
, rec
, col
);
363 log_error("fld malloc failed\n");
366 if (tempc
< (count
- 1)) {
367 rec
->rec_len
+= snprintf((str
+rec
->rec_len
),
368 (len
- rec
->rec_len
), ",");
371 rec
->rec_len
+= snprintf((str
+rec
->rec_len
),
372 (len
- rec
->rec_len
), "\n");
374 csv
->csv_len
+= (rec
->rec_len
- tlen
);
375 csv
->pointer
+= (rec
->rec_len
- tlen
);
380 csv_serialize(csv_t
*csv
, char *msgbuf
, int msglen
)
385 if (!csv
|| !msgbuf
) return -1;
387 rec
= csv_record_iter(csv
);
388 while (rec
!= NULL
) {
389 if ((offset
+ rec
->rec_len
) >= msglen
)
391 offset
+= sprintf(&msgbuf
[offset
], "%s", rec
->record
);
392 rec
= csv_record_iter_next(rec
);
399 csv_clone_record (csv_t
*csv
, csv_record_t
*in_rec
, csv_record_t
**out_rec
)
404 /* first check if rec belongs to this csv */
405 if(!csv_is_record_valid(csv
, in_rec
)){
406 log_error("rec not in this csv\n");
410 /* only works with csv with discrete bufs */
412 log_error("un-supported for this csv type - single buf detected\n");
416 /* create a new rec */
417 rec
= calloc(1, sizeof(csv_record_t
));
419 log_error("record malloc failed\n");
422 csv_init_record(rec
);
423 curr
= calloc(1, csv
->buflen
);
425 log_error("field str malloc failed\n");
430 rec
->rec_len
= in_rec
->rec_len
;
431 strcpy(rec
->record
, in_rec
->record
);
433 /* decode record into fields */
434 csv_decode_record(rec
);
440 csv_remove_record (csv_t
*csv
, csv_record_t
*rec
)
442 csv_field_t
*fld
, *p_fld
;
444 /* first check if rec belongs to this csv */
445 if(!csv_is_record_valid(csv
, rec
)){
446 log_error("rec not in this csv\n");
451 csv_field_iter(rec
, &fld
);
454 csv_field_iter_next(&fld
);
455 TAILQ_REMOVE(&(rec
->fields
), p_fld
, next_field
);
459 TAILQ_REMOVE(&(csv
->records
), rec
, next_record
);
462 csv
->csv_len
-= rec
->rec_len
;
463 csv
->pointer
-= rec
->rec_len
;
470 csv_insert_record (csv_t
*csv
, csv_record_t
*rec
)
472 /* first check if rec already in csv */
473 if(csv_is_record_valid(csv
, rec
)){
474 log_error("rec already in this csv\n");
478 /* we can only insert records if no buf was supplied during csv init */
480 log_error("un-supported for this csv type - single buf detected\n");
484 /* do we go beyond the max buf set for this csv ?*/
485 if ((csv
->csv_len
+ rec
->rec_len
) > csv
->buflen
) {
486 log_error("cannot insert - exceeded buf size\n");
490 TAILQ_INSERT_TAIL(&(csv
->records
), rec
, next_record
);
492 csv
->csv_len
+= rec
->rec_len
;
493 csv
->pointer
+= rec
->rec_len
;
497 csv_concat_record (csv_t
*csv
,
505 /* first check if rec1 and rec2 belong to this csv */
506 if(!csv_is_record_valid(csv
, rec1
) ||
507 !csv_is_record_valid(csv
, rec2
)) {
508 log_error("rec1 and/or rec2 invalid\n");
512 /* we can only concat records if no buf was supplied during csv init */
514 log_error("un-supported for this csv type - single buf detected\n");
518 /* create a new rec */
519 rec
= calloc(1, sizeof(csv_record_t
));
521 log_error("record malloc failed\n");
524 csv_init_record(rec
);
526 curr
= (char *)calloc(1, csv
->buflen
);
528 log_error("field str malloc failed\n");
533 /* concat the record string */
534 ret
= strstr(rec1
->record
, "\n");
536 log_error("rec1 str not properly formatted\n");
540 snprintf(curr
, (int)(ret
- rec1
->record
+ 1), "%s", rec1
->record
);
543 ret
= strstr(rec2
->record
, "\n");
545 log_error("rec2 str not properly formatted\n");
549 snprintf((curr
+strlen(curr
)), (int)(ret
- rec2
->record
+ 1), "%s",
552 rec
->rec_len
= strlen(curr
);
556 (csv
->csv_len
- rec1
->rec_len
- rec2
->rec_len
+ rec
->rec_len
));
558 /* decode record into fields */
559 csv_decode_record(rec
);
561 /* now remove rec1 and rec2 and insert rec into this csv */
562 csv_remove_record(csv
, rec1
);
563 csv_remove_record(csv
, rec2
);
564 csv_insert_record(csv
, rec
);
576 csv_decode (csv_t
*csv
, char *inbuf
)
582 buf
= (inbuf
)? inbuf
:csv
->buf
;
583 pos
= strpbrk(buf
, "\n");
584 while (pos
!= NULL
) {
585 rec
= calloc(1, sizeof(csv_record_t
));
588 csv_init_record(rec
);
589 TAILQ_INSERT_TAIL(&(csv
->records
), rec
, next_record
);
594 rec
->record
= calloc(1, csv
->buflen
);
596 log_error("field str malloc failed\n");
599 strncpy(rec
->record
, buf
, pos
-buf
+1);
601 rec
->rec_len
= pos
-buf
+1;
602 /* decode record into fields */
603 csv_decode_record(rec
);
605 pos
= strpbrk(buf
, "\n");
610 csv_is_record_valid(csv_t
*csv
, csv_record_t
*in_rec
)
615 rec
= csv_record_iter(csv
);
621 rec
= csv_record_iter_next(rec
);
628 csv_dump (csv_t
*csv
)
634 rec
= csv_record_iter(csv
);
635 while (rec
!= NULL
) {
636 str
= csv_field_iter(rec
, &fld
);
637 while (str
!= NULL
) {
638 fprintf(stderr
, "%s\n", str
);
639 str
= csv_field_iter_next(&fld
);
641 rec
= csv_record_iter_next(rec
);
648 get_memory_usage (pid_t pid
)
651 char buf
[4096], status_child
[BUFSIZ
];
654 sprintf(status_child
, "/proc/%d/status", pid
);
655 if ((fd
= open(status_child
, O_RDONLY
)) < 0)
664 vm
= strstr(buf
, "VmData:");
666 sscanf(vm
, "%*s %d", &data
);
668 vm
= strstr(buf
, "VmStk:");
670 sscanf(vm
, "%*s %d", &stack
);
685 char hdr1
[32], hdr2
[32];
687 log_verbose("Mem: %ld\n", get_memory_usage(getpid()));
688 csv_init(&csv
, buf
, 256);
689 sprintf(hdr1
, "%4u", 0);
690 sprintf(hdr2
, "%4u", 1);
691 log_verbose("(%d/%d/%d/%d)\n", strlen(hdr1
),
692 strlen(hdr2
), atoi(hdr1
), atoi(hdr2
));
693 rec
= csv_encode(&csv
, 2, hdr1
, hdr2
);
694 csv_encode(&csv
, 4, "name", "age", "sex", "hei");
695 csv_encode(&csv
, 3, NULL
, "0", NULL
);
696 csv_encode(&csv
, 2, "p", "35");
697 for (i
=0; i
< 50; i
++) {
698 csv_encode(&csv
, 2, "p", "10");
700 csv_encode(&csv
, 2, "pdfadfadfadsadsaddfdfdsfdsd",
701 "35444554545454545");
702 log_verbose("%s\n", buf
);
703 sprintf(hdr1
, "%4u", csv
.csv_len
);
704 sprintf(hdr2
, "%4u", 1);
705 log_verbose("(%d/%d/%d/%d)\n", strlen(hdr1
),
706 strlen(hdr2
), atoi(hdr1
), atoi(hdr2
));
707 rec
= csv_encode_record(&csv
, rec
, 2, hdr1
, hdr2
);
708 log_verbose("(%d/%d)\n%s\n", rec
->rec_len
, csv
.csv_len
, buf
);
710 log_verbose("Mem: %ld\n", get_memory_usage(getpid()));
712 log_verbose("Mem: %ld\n", get_memory_usage(getpid()));
713 csv_init(&csv
, buf
, 256);
714 csv_decode(&csv
, NULL
);
715 log_verbose("AFTER DECODE\n");
718 log_verbose("Mem: %ld\n", get_memory_usage(getpid()));