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118 lines
2.8 KiB
C
118 lines
2.8 KiB
C
/* divesite.c */
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#include "divesite.h"
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#include "dive.h"
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struct dive_site_table dive_site_table;
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/* there could be multiple sites of the same name - return the first one */
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uint32_t get_dive_site_uuid_by_name(const char *name, struct dive_site **dsp)
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{
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int i;
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struct dive_site *ds;
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for_each_dive_site (i, ds) {
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if (same_string(ds->name, name)) {
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if (dsp)
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*dsp = ds;
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return ds->uuid;
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}
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}
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return 0;
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}
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/* there could be multiple sites at the same GPS fix - return the first one */
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uint32_t get_dive_site_uuid_by_gps(degrees_t latitude, degrees_t longitude, struct dive_site **dsp)
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{
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int i;
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struct dive_site *ds;
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for_each_dive_site (i, ds) {
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if (ds->latitude.udeg == latitude.udeg && ds->longitude.udeg == longitude.udeg) {
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if (dsp)
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*dsp = ds;
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return ds->uuid;
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}
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}
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return 0;
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}
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/* try to create a uniqe ID - fingers crossed */
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static uint32_t dive_site_getUniqId()
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{
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uint32_t id = 0;
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while (id == 0 || get_dive_site_by_uuid(id))
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id = random() + random();
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return id;
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}
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struct dive_site *alloc_dive_site()
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{
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int nr = dive_site_table.nr, allocated = dive_site_table.allocated;
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struct dive_site **sites = dive_site_table.dive_sites;
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if (nr >= allocated) {
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allocated = (nr + 32) * 3 / 2;
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sites = realloc(sites, allocated * sizeof(struct dive_site *));
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if (!sites)
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exit(1);
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dive_site_table.dive_sites = sites;
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dive_site_table.allocated = allocated;
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}
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struct dive_site *ds = calloc(1, sizeof(*ds));
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if (!ds)
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exit(1);
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sites[nr] = ds;
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dive_site_table.nr = nr + 1;
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ds->uuid = dive_site_getUniqId();
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return ds;
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}
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void delete_dive_site(uint32_t id)
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{
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int nr = dive_site_table.nr;
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for (int i = 0; i < nr; i++) {
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struct dive_site *ds = get_dive_site(i);
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if (ds->uuid == id) {
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free(ds->name);
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free(ds->notes);
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free(ds);
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if (nr - 1 > i)
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memmove(&dive_site_table.dive_sites[i],
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&dive_site_table.dive_sites[i+1],
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(nr - 1 - i) * sizeof(dive_site_table.dive_sites[0]));
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dive_site_table.nr = nr - 1;
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break;
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}
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}
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}
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/* allocate a new site and add it to the table */
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uint32_t create_dive_site(const char *name)
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{
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struct dive_site *ds = alloc_dive_site();
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ds->name = copy_string(name);
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return ds->uuid;
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}
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/* same as before, but with GPS data */
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uint32_t create_dive_site_with_gps(const char *name, degrees_t latitude, degrees_t longitude)
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{
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struct dive_site *ds = alloc_dive_site();
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ds->uuid = dive_site_getUniqId();
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ds->name = copy_string(name);
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ds->latitude = latitude;
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ds->longitude = longitude;
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return ds->uuid;
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}
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/* a uuid is always present - but if all the other fields are empty, the dive site is pointless */
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bool dive_site_is_empty(struct dive_site *ds)
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{
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return same_string(ds->name, "") &&
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same_string(ds->description, "") &&
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same_string(ds->notes, "") &&
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ds->latitude.udeg == 0 &&
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ds->longitude.udeg == 0;
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}
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