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#include "grok.h"
#include "grok_capture.h"
#include "grok_capture_xdr.h"
#include <assert.h>
#define CAPTURE_NUMBER_NOT_SET (-1)
char *EMPTYSTR = "";
void grok_capture_init(grok_t *grok, grok_capture *gct) {
gct->id = CAPTURE_NUMBER_NOT_SET;
gct->pcre_capture_number = CAPTURE_NUMBER_NOT_SET;
gct->name = NULL;
gct->name_len = 0;
gct->subname = NULL;
gct->subname_len = 0;
gct->pattern = NULL;
gct->pattern_len = 0;
gct->predicate_lib = NULL;
gct->predicate_func_name = NULL;
gct->extra.extra_len = 0;
gct->extra.extra_val = NULL;
}
void grok_capture_add(grok_t *grok, const grok_capture *gct) {
grok_log(grok, LOG_CAPTURE,
"Adding pattern '%s' as capture %d (pcrenum %d)",
gct->name, gct->id, gct->pcre_capture_number);
/* Primary key is id */
tctreeput(grok->captures_by_id, &(gct->id), sizeof(gct->id),
gct, sizeof(grok_capture));
/* Tokyo Cabinet doesn't seem to support 'secondary indexes' like BDB does,
* so let's manually update all the other 'captures_by_*' trees */
int unused_size;
tctreeput(grok->captures_by_capture_number, &(gct->pcre_capture_number),
sizeof(gct->pcre_capture_number), gct, sizeof(grok_capture));
int i, listsize;
/* TCTREE doesn't permit dups, so let's make the structure a tree of arrays,
* keyed on a string. */
/* captures_by_name */
TCLIST *by_name_list;
by_name_list = (TCLIST *) tctreeget(grok->captures_by_name,
(const char *)gct->name,
gct->name_len, &unused_size);
if (by_name_list == NULL) {
by_name_list = tclistnew();
}
/* delete a capture with the same capture id so we can replace it*/
listsize = tclistnum(by_name_list);
for (i = 0; i < listsize; i++) {
grok_capture *list_gct;
list_gct = (grok_capture *)tclistval(by_name_list, i, &unused_size);
if (list_gct->id == gct->id) {
tclistremove(by_name_list, i, &unused_size);
break;
}
}
tclistpush(by_name_list, gct, sizeof(grok_capture));
tctreeput(grok->captures_by_name, gct->name, gct->name_len,
by_name_list, sizeof(TCLIST));
/* end captures_by_name */
/* captures_by_subname */
TCLIST *by_subname_list;
by_subname_list = (TCLIST *) tctreeget(grok->captures_by_subname,
(const char *)gct->subname,
gct->subname_len, &unused_size);
if (by_subname_list == NULL) {
by_subname_list = tclistnew();
}
/* delete a capture with the same capture id so we can replace it*/
listsize = tclistnum(by_subname_list);
for (i = 0; i < listsize; i++) {
grok_capture *list_gct;
list_gct = (grok_capture *)tclistval(by_subname_list, i, &unused_size);
if (list_gct->id == gct->id) {
tclistremove(by_subname_list, i, &unused_size);
break;
}
}
tclistpush(by_subname_list, gct, sizeof(grok_capture));
tctreeput(grok->captures_by_subname, gct->subname, gct->subname_len,
by_subname_list, sizeof(TCLIST));
/* end captures_by_subname */
}
const grok_capture *grok_capture_get_by_id(grok_t *grok, int id) {
int unused_size;
const grok_capture *gct;
gct = tctreeget(grok->captures_by_id, &id, sizeof(id), &unused_size);
return gct;
}
const grok_capture *grok_capture_get_by_name(const grok_t *grok, const char *name) {
int unused_size;
const grok_capture *gct;
const TCLIST *by_name_list;
by_name_list = tctreeget(grok->captures_by_name, name, strlen(name),
&unused_size);
if (by_name_list == NULL)
return NULL;
/* return the first capture by this name in the list */
gct = tclistval(by_name_list, 0, &unused_size);
return gct;
}
const grok_capture *grok_capture_get_by_subname(const grok_t *grok,
const char *subname) {
int unused_size;
const grok_capture *gct;
const TCLIST *by_subname_list;
by_subname_list = tctreeget(grok->captures_by_subname, subname,
strlen(subname), &unused_size);
if (by_subname_list == NULL)
return NULL;
gct = tclistval(by_subname_list, 0, &unused_size);
return gct;
}
const grok_capture *grok_capture_get_by_capture_number(grok_t *grok,
int capture_number) {
int unused_size;
const grok_capture *gct;
gct = tctreeget(grok->captures_by_capture_number, &capture_number,
sizeof(capture_number), &unused_size);
return gct;
}
int grok_capture_set_extra(grok_t *grok, grok_capture *gct, void *extra) {
/* Store the pointer to extra.
* XXX: This is potentially bad voodoo. */
grok_log(grok, LOG_CAPTURE, "Setting extra value of 0x%x", extra);
/* We could copy it this way, but if you compile with -fomit-frame-pointer,
* this data is lost since extra is in the stack. Copy the pointer instead.
* TODO(sissel): See if we don't need this anymore since using tokyocabinet.
*/
//gct->extra.extra_val = (char *)&extra;
gct->extra.extra_len = sizeof(void *); /* allocate pointer size */
gct->extra.extra_val = malloc(gct->extra.extra_len);
memcpy(gct->extra.extra_val, &extra, gct->extra.extra_len);
//gct->extra.extra_len = extra;
//gct->extra.extra_val = extra;
return 0;
}
void _grok_capture_encode(grok_capture *gct, char **data_ret,
int *size_ret) {
#define BASE_ALLOC_SIZE 256;
XDR xdr;
grok_capture local;
int alloc_size = BASE_ALLOC_SIZE;
*data_ret = NULL;
/* xdr_string doesn't understand NULL, so replace NULL with "" */
memcpy(&local, gct, sizeof(local));
if (local.name == NULL) local.name = EMPTYSTR;
if (local.subname == NULL) local.subname = EMPTYSTR;
if (local.pattern == NULL) local.pattern = EMPTYSTR;
if (local.predicate_lib == NULL) local.predicate_lib = EMPTYSTR;
if (local.predicate_func_name == NULL) local.predicate_func_name = EMPTYSTR;
if (local.extra.extra_val == NULL) local.extra.extra_val = EMPTYSTR;
do {
if (*data_ret == NULL) {
*data_ret = malloc(alloc_size);
} else {
xdr_destroy(&xdr);
alloc_size *= 2;
//fprintf(stderr, "Growing xdr buffer to %d\n", alloc_size);
*data_ret = realloc(*data_ret, alloc_size);
}
xdrmem_create(&xdr, *data_ret, alloc_size, XDR_ENCODE);
/* If we get larger than a meg, something is probably wrong. */
if (alloc_size > 1<<20) {
abort();
}
} while (xdr_grok_capture(&xdr, &local) == FALSE);
*size_ret = xdr_getpos(&xdr);
}
void _grok_capture_decode(grok_capture *gct, char *data, int size) {
XDR xdr;
xdrmem_create(&xdr, data, size, XDR_DECODE);
xdr_grok_capture(&xdr, gct);
}
#define _GCT_STRFREE(gct, member) \
if (gct->member != NULL && gct->member != EMPTYSTR) { \
free(gct->member); \
}
void grok_capture_free(grok_capture *gct) {
_GCT_STRFREE(gct, name);
_GCT_STRFREE(gct, subname);
_GCT_STRFREE(gct, pattern);
_GCT_STRFREE(gct, predicate_lib);
_GCT_STRFREE(gct, predicate_func_name);
_GCT_STRFREE(gct, extra.extra_val);
}
/* this function will walk the captures_by_id table */
void grok_capture_walk_init(const grok_t *grok) {
tctreeiterinit(grok->captures_by_id);
}
const grok_capture *grok_capture_walk_next(const grok_t *grok) {
int id_size;
int gct_size;
int *id;
const grok_capture *gct;
id = (int *)tctreeiternext(grok->captures_by_id, &id_size);
if (id == NULL) {
grok_log(grok, LOG_CAPTURE, "walknext null");
return NULL;
}
grok_log(grok, LOG_CAPTURE, "walknext ok %d", *id);
gct = (grok_capture *)tctreeget(grok->captures_by_id, id, id_size,
&gct_size);
return gct;
}
int grok_capture_walk_end(grok_t *grok) {
/* nothing, anymore */
return 0;
}
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