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core: add C struct device and struct device_table accessors

Browse source 
Up to now, "struct device" and "struct device_table" were C++
only, because they used C++ strings for convenience. Since we
switched from QString to std::string, we can create accessors
for these structs. For the C code, we simply declare them as
opaque structs and give the full definition only for C++.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2020-10-05 20:55:57 +02:00 • committed by Dirk Hohndel
parent 4a50badb57
commit c4bfecce1b
2 changed files with 52 additions and 2 deletions
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37
core/device.cpp
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@ -358,3 +358,40 @@ const char *get_dc_nickname(const struct divecomputer *dc)
else
return dc->model;
}
extern "C" int nr_devices(const struct device_table *table)
{
return (int)table->devices.size();
}
extern "C" const struct device *get_device(const struct device_table *table, int i)
{
if (i < 0 || i > nr_devices(table))
return NULL;
return &table->devices[i];
}
extern "C" const char *device_get_model(const struct device *dev)
{
return dev ? dev->model.c_str() : NULL;
}
extern "C" const uint32_t device_get_id(const struct device *dev)
{
return dev ? dev->deviceId : -1;
}
extern "C" const char *device_get_serial(const struct device *dev)
{
return dev ? dev->serialNumber.c_str() : NULL;
}
extern "C" const char *device_get_firmware(const struct device *dev)
{
return dev ? dev->firmware.c_str() : NULL;
}
extern "C" const char *device_get_nickname(const struct device *dev)
{
return dev ? dev->nickName.c_str() : NULL;
}