mirror of
https://github.com/subsurface/subsurface.git
synced 2024-11-28 13:10:19 +00:00
b5a232cf32
This doesn't change any real semantics, but it means that we will write out the device computer information in a well-defined order, rather than in some random order (before this: reverse order of reading them in). Having the XML file be as stable as possible is important so that *real* changes stand out when you make changes to your dives. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
111 lines
2.7 KiB
C
111 lines
2.7 KiB
C
#include <string.h>
|
|
#include "dive.h"
|
|
#include "device.h"
|
|
|
|
static struct device_info *device_info_list;
|
|
|
|
struct device_info *head_of_device_info_list(void)
|
|
{
|
|
return device_info_list;
|
|
}
|
|
|
|
static int match_device_info(struct device_info *entry, const char *model, uint32_t deviceid)
|
|
{
|
|
return !strcmp(entry->model, model) && entry->deviceid == deviceid;
|
|
}
|
|
|
|
/* just find the entry for this divecomputer */
|
|
struct device_info *get_device_info(const char *model, uint32_t deviceid)
|
|
{
|
|
struct device_info *known = device_info_list;
|
|
|
|
/* a 0 deviceid doesn't get a nickname - those come from development
|
|
* versions of Subsurface that didn't store the deviceid in the divecomputer entries */
|
|
if (!deviceid || !model)
|
|
return NULL;
|
|
while (known) {
|
|
if (match_device_info(known, model, deviceid))
|
|
return known;
|
|
known = known->next;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Sort the device_info list, so that we write it out
|
|
* in a stable order. Otherwise we'll end up having the
|
|
* XML file have the devices listed in some arbitrary
|
|
* order, which is annoying.
|
|
*/
|
|
static void add_entry_sorted(struct device_info *entry)
|
|
{
|
|
struct device_info *p, **pp = &device_info_list;
|
|
|
|
while ((p = *pp) != NULL) {
|
|
int cmp = strcmp(p->model, entry->model);
|
|
if (cmp > 0)
|
|
break;
|
|
if (!cmp && p->deviceid > entry->deviceid)
|
|
break;
|
|
pp = &p->next;
|
|
}
|
|
|
|
entry->next = p;
|
|
*pp = entry;
|
|
}
|
|
|
|
/* Get an existing device info model or create a new one if valid */
|
|
struct device_info *create_device_info(const char *model, uint32_t deviceid)
|
|
{
|
|
struct device_info *entry;
|
|
|
|
if (!deviceid || !model || !*model)
|
|
return NULL;
|
|
entry = get_device_info(model, deviceid);
|
|
if (entry)
|
|
return entry;
|
|
entry = calloc(1, sizeof(*entry));
|
|
if (entry) {
|
|
entry->model = strdup(model);
|
|
entry->deviceid = deviceid;
|
|
add_entry_sorted(entry);
|
|
}
|
|
return entry;
|
|
}
|
|
|
|
/* do we have a DIFFERENT divecomputer of the same model? */
|
|
struct device_info *get_different_device_info(const char *model, uint32_t deviceid)
|
|
{
|
|
struct device_info *known = device_info_list;
|
|
|
|
/* a 0 deviceid matches any DC of the same model - those come from development
|
|
* versions of Subsurface that didn't store the deviceid in the divecomputer entries */
|
|
if (!deviceid)
|
|
return NULL;
|
|
if (!model)
|
|
model = "";
|
|
while (known) {
|
|
if (known->model && !strcmp(known->model, model) &&
|
|
known->deviceid != deviceid)
|
|
return known;
|
|
known = known->next;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
struct device_info *remove_device_info(const char *model, uint32_t deviceid)
|
|
{
|
|
struct device_info *entry, **p;
|
|
|
|
if (!deviceid || !model || !*model)
|
|
return NULL;
|
|
p = &device_info_list;
|
|
while ((entry = *p) != NULL) {
|
|
if (match_device_info(entry, model, deviceid)) {
|
|
*p = entry->next;
|
|
break;
|
|
}
|
|
p = &entry->next;
|
|
}
|
|
return entry;
|
|
}
|