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cabf8c0c21
Add more information for the divesite, a country can be used to help sorting. Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org> Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
376 lines
9.5 KiB
C
376 lines
9.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* divesite.c */
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#include "divesite.h"
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#include "dive.h"
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#include "divelist.h"
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#include "membuffer.h"
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#include <math.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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/* to avoid a bug where we have two dive sites with different name and the same GPS coordinates
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* and first get the gps coordinates (reading a V2 file) and happen to get back "the other" name,
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* this function allows us to verify if a very specific name/GPS combination already exists */
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uint32_t get_dive_site_uuid_by_gps_and_name(char *name, degrees_t latitude, degrees_t longitude)
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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 && same_string(ds->name, name))
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return ds->uuid;
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}
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return 0;
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}
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// Calculate the distance in meters between two coordinates.
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unsigned int get_distance(degrees_t lat1, degrees_t lon1, degrees_t lat2, degrees_t lon2)
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{
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double lat2_r = udeg_to_radians(lat2.udeg);
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double lat_d_r = udeg_to_radians(lat2.udeg-lat1.udeg);
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double lon_d_r = udeg_to_radians(lon2.udeg-lon1.udeg);
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double a = sin(lat_d_r/2) * sin(lat_d_r/2) +
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cos(lat2_r) * cos(lat2_r) * sin(lon_d_r/2) * sin(lon_d_r/2);
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double c = 2 * atan2(sqrt(a), sqrt(1.0 - a));
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// Earth radious in metres
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return lrint(6371000 * c);
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}
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/* find the closest one, no more than distance meters away - if more than one at same distance, pick the first */
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uint32_t get_dive_site_uuid_by_gps_proximity(degrees_t latitude, degrees_t longitude, int distance, struct dive_site **dsp)
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{
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int i;
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int uuid = 0;
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struct dive_site *ds;
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unsigned int cur_distance, min_distance = distance;
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for_each_dive_site (i, ds) {
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if (dive_site_has_gps_location(ds) &&
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(cur_distance = get_distance(ds->latitude, ds->longitude, latitude, longitude)) < min_distance) {
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min_distance = cur_distance;
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uuid = ds->uuid;
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if (dsp)
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*dsp = ds;
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}
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}
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return uuid;
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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 = rand() & 0xff;
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id |= (rand() & 0xff) << 8;
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id |= (rand() & 0xff) << 16;
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id |= (rand() & 0xff) << 24;
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}
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return id;
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}
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/* we never allow a second dive site with the same uuid */
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struct dive_site *alloc_or_get_dive_site(uint32_t uuid)
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{
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struct dive_site *ds;
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if (uuid && (ds = get_dive_site_by_uuid(uuid)) != NULL)
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return ds;
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int nr = dive_site_table.nr;
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int 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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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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// we should always be called with a valid uuid except in the special
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// case where we want to copy a dive site into the memory we allocated
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// here - then we need to pass in 0 and create a temporary uuid here
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// (just so things are always consistent)
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if (uuid)
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ds->uuid = uuid;
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else
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ds->uuid = dive_site_getUniqId();
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return ds;
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}
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int nr_of_dives_at_dive_site(uint32_t uuid, bool select_only)
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{
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int j;
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int nr = 0;
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struct dive *d;
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for_each_dive(j, d) {
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if (d->dive_site_uuid == uuid && (!select_only || d->selected)) {
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nr++;
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}
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}
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return nr;
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}
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bool is_dive_site_used(uint32_t uuid, bool select_only)
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{
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int j;
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bool found = false;
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struct dive *d;
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for_each_dive(j, d) {
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if (d->dive_site_uuid == uuid && (!select_only || d->selected)) {
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found = true;
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break;
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}
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}
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return found;
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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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uint32_t create_divesite_uuid(const char *name, timestamp_t divetime)
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{
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if (name == NULL)
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name ="";
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unsigned char hash[20];
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SHA_CTX ctx;
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SHA1_Init(&ctx);
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SHA1_Update(&ctx, &divetime, sizeof(timestamp_t));
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SHA1_Update(&ctx, name, strlen(name));
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SHA1_Final(hash, &ctx);
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// now return the first 32 of the 160 bit hash
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return *(uint32_t *)hash;
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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, timestamp_t divetime)
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{
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uint32_t uuid = create_divesite_uuid(name, divetime);
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struct dive_site *ds = alloc_or_get_dive_site(uuid);
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ds->name = copy_string(name);
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ds->country = NULL;
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return uuid;
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}
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/* same as before, but with current time if no current_dive is present */
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uint32_t create_dive_site_from_current_dive(const char *name)
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{
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if (current_dive != NULL) {
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return create_dive_site(name, current_dive->when);
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} else {
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timestamp_t when;
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time_t now = time(0);
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when = utc_mktime(localtime(&now));
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return create_dive_site(name, when);
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}
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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, timestamp_t divetime)
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{
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uint32_t uuid = create_divesite_uuid(name, divetime);
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struct dive_site *ds = alloc_or_get_dive_site(uuid);
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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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same_string(ds->country, "") &&
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ds->latitude.udeg == 0 &&
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ds->longitude.udeg == 0;
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}
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void copy_dive_site(struct dive_site *orig, struct dive_site *copy)
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{
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free(copy->name);
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free(copy->notes);
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free(copy->country);
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free(copy->description);
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copy->latitude = orig->latitude;
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copy->longitude = orig->longitude;
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copy->name = copy_string(orig->name);
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copy->notes = copy_string(orig->notes);
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copy->description = copy_string(orig->description);
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copy->country = copy_string(orig->country);
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copy->uuid = orig->uuid;
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if (orig->taxonomy.category == NULL) {
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free_taxonomy(©->taxonomy);
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} else {
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if (copy->taxonomy.category == NULL)
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copy->taxonomy.category = alloc_taxonomy();
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for (int i = 0; i < TC_NR_CATEGORIES; i++) {
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if (i < copy->taxonomy.nr)
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free((void *)copy->taxonomy.category[i].value);
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if (i < orig->taxonomy.nr) {
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copy->taxonomy.category[i] = orig->taxonomy.category[i];
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copy->taxonomy.category[i].value = copy_string(orig->taxonomy.category[i].value);
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}
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}
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copy->taxonomy.nr = orig->taxonomy.nr;
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}
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}
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static void merge_string(char **a, char **b)
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{
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char *s1 = *a, *s2 = *b;
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if (!s2)
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return;
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if (same_string(s1, s2))
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return;
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if (!s1) {
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*a = strdup(s2);
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return;
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}
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*a = format_string("(%s) or (%s)", s1, s2);
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free(s1);
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}
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void merge_dive_site(struct dive_site *a, struct dive_site *b)
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{
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if (!a->latitude.udeg) a->latitude.udeg = b->latitude.udeg;
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if (!a->longitude.udeg) a->longitude.udeg = b->longitude.udeg;
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merge_string(&a->name, &b->name);
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merge_string(&a->notes, &b->notes);
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merge_string(&a->description, &b->description);
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merge_string(&a->country, &b->country);
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if (!a->taxonomy.category) {
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a->taxonomy = b->taxonomy;
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memset(&b->taxonomy, 0, sizeof(b->taxonomy));
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}
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}
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void clear_dive_site(struct dive_site *ds)
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{
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free(ds->name);
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free(ds->notes);
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free(ds->description);
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free(ds->name);
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ds->name = 0;
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ds->notes = 0;
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ds->description = 0;
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ds->latitude.udeg = 0;
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ds->longitude.udeg = 0;
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ds->uuid = 0;
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ds->taxonomy.nr = 0;
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ds->country = 0;
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free_taxonomy(&ds->taxonomy);
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}
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void merge_dive_sites(uint32_t ref, uint32_t* uuids, int count)
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{
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int curr_dive, i;
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struct dive *d;
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for(i = 0; i < count; i++){
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if (uuids[i] == ref)
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continue;
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for_each_dive(curr_dive, d) {
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if (d->dive_site_uuid != uuids[i] )
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continue;
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d->dive_site_uuid = ref;
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}
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}
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for(i = 0; i < count; i++) {
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if (uuids[i] == ref)
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continue;
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delete_dive_site(uuids[i]);
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}
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mark_divelist_changed(true);
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}
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uint32_t find_or_create_dive_site_with_name(const char *name, timestamp_t divetime)
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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(name, ds->name))
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break;
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}
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if (ds)
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return ds->uuid;
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return create_dive_site(name, divetime);
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}
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static int compare_sites(const void *_a, const void *_b)
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{
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const struct dive_site *a = (const struct dive_site *)*(void **)_a;
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const struct dive_site *b = (const struct dive_site *)*(void **)_b;
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return a->uuid > b->uuid ? 1 : a->uuid == b->uuid ? 0 : -1;
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}
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void dive_site_table_sort()
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{
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qsort(dive_site_table.dive_sites, dive_site_table.nr, sizeof(struct dive_site *), compare_sites);
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}
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