50 lines
1.2 KiB
C++
50 lines
1.2 KiB
C++
#pragma once
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#include <string>
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#include <map>
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#include <logging.hpp>
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#include <system_properties.h>
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#define PERSISTENT_PROPERTY_DIR "/data/property"
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struct prop_cb {
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virtual void exec(const char *name, const char *value) = 0;
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};
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template<class T>
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struct prop_cb_impl : public prop_cb {
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typedef void (*callback_type)(const char *, const char *, T&);
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wdangling-field" // Dangling field is expected
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prop_cb_impl(T &arg, callback_type fn) : arg(arg), fn(fn) {}
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#pragma GCC diagnostic pop
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void exec(const char *name, const char *value) override {
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fn(name, value, arg);
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}
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private:
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T &arg;
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callback_type fn;
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};
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extern bool use_pb;
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using prop_list = std::map<std::string_view, std::string>;
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struct prop_collector : prop_cb_impl<prop_list> {
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prop_collector(prop_list &list) :
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prop_cb_impl<prop_list>(list, [](auto name, auto val, auto list){ list.emplace(name, val); }) {}
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};
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template <class T, class Func>
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prop_cb_impl<T> make_prop_cb(T &arg, Func f) {
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return prop_cb_impl<T>(arg, f);
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}
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std::string persist_getprop(const char *name);
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void persist_getprops(prop_cb *prop_cb);
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bool persist_deleteprop(const char *name);
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void persist_cleanup();
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