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Some dive site helper functions

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Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Dirk Hohndel 2015-02-12 11:19:05 -08:00
parent dcfda29da6
commit e720c82aa1
2 changed files with 64 additions and 3 deletions
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57
divesite.c
View file

@ -1,2 +1,59 @@
/* divesite.c */
#include "divesite.h"
#include "dive.h"
struct dive_site_table dive_site_table;
/* try to create a uniqe ID - fingers crossed */
static uint32_t dive_site_getUniqId()
{
uint32_t id = 0;
while (id == 0 || get_dive_site_by_uuid(id))
id = random() + random();
return id;
}
struct dive_site *alloc_dive_site()
{
int nr = dive_site_table.nr, allocated = dive_site_table.allocated;
struct dive_site **sites = dive_site_table.dive_sites;
if (nr >= allocated) {
allocated = (nr + 32) * 3 / 2;
sites = realloc(sites, allocated * sizeof(struct dive_site *));
if (!sites)
exit(1);
dive_site_table.dive_sites = sites;
dive_site_table.allocated = allocated;
}
struct dive_site *ds = calloc(1, sizeof(*ds));
if (!ds)
exit(1);
sites[nr] = ds;
dive_site_table.nr = nr + 1;
return ds;
}
/* allocate a new site and add it to the table */
uint32_t create_dive_site(const char *name, degrees_t latitude, degrees_t longitude)
{
struct dive_site *ds = alloc_dive_site();
ds->uuid = dive_site_getUniqId();
ds->name = copy_string(name);
ds->latitude = latitude;
ds->longitude = longitude;
return ds->uuid;
}
/* this either returns the uuid for a site with that name or creates an entry */
uint32_t dive_site_uuid_by_name(const char *name)
{
uint32_t id = get_dive_site_uuid_by_name(name);
if (id == 0)
id = create_dive_site(name, (degrees_t){0}, (degrees_t){0});
return id;
}

10
divesite.h
View file

@ -36,12 +36,16 @@ static inline struct dive_site *get_dive_site_by_uuid(uint32_t uuid)
}
/* there could be multiple sites of the same name - return the first one */
static inline struct dive_site *get_dive_site_by_name(const char *name)
static inline uint32_t get_dive_site_uuid_by_name(const char *name)
{
for (int i = 0; i < dive_site_table.nr; i++)
if (get_dive_site(i)->name == name)
return get_dive_site(i);
return NULL;
return get_dive_site(i)->uuid;
return 0;
}
struct dive_site *alloc_dive_site();
uint32_t create_dive_site(const char *name, degrees_t latitude, degrees_t longitude);
uint32_t dive_site_uuid_by_name(const char *name);
#endif // DIVESITE_H