mirror of
https://github.com/Fledge68/WiiFlow_Lite.git
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162 lines
3.3 KiB
C++
162 lines
3.3 KiB
C++
#include "cache.hpp"
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template <typename T>
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CCache<T>::CCache(T &tmp, string path, u32 index, CMode mode) /* Load/Save One */
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{
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filename = path;
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//gprintf("Openning DB: %s\n", filename.c_str());
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cache = fopen(filename.c_str(), io[mode]);
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if(!cache) return;
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switch(mode)
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{
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case LOAD:
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LoadOne(tmp, index);
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break;
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case SAVE:
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SaveOne(tmp, index);
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break;
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default:
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return;
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}
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}
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template <typename T>
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CCache<T>::CCache(vector<T> &list, string path , CMode mode) /* Load/Save All */
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{
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filename = path;
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//gprintf("Opening DB: %s\n", filename.c_str());
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cache = fopen(filename.c_str(), io[mode]);
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if(!cache) return;
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switch(mode)
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{
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case LOAD:
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LoadAll(list);
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break;
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case SAVE:
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SaveAll(list);
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break;
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default:
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return;
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}
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}
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template <typename T>
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CCache<T>::CCache(vector<T> &list, string path, T tmp, CMode mode) /* Add One */
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{
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filename = path;
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//gprintf("Openning DB: %s\n", filename.c_str());
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cache = fopen(filename.c_str(), io[mode]);
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if(!cache) return;
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switch(mode)
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{
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case ADD:
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AddOne(list, tmp);
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break;
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default:
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return;
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}
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}
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template <typename T>
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CCache<T>::CCache(vector<T> &list, string path, u32 index, CMode mode) /* Remove One */
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{
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filename = path;
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//gprintf("Openning DB: %s\n", filename.c_str());
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cache = fopen(filename.c_str(), io[mode]);
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if(!cache) return;
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switch(mode)
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{
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case REMOVE:
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RemoveOne(list, index);
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break;
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default:
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return;
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}
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}
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template <typename T>
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CCache<T>::~CCache()
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{
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//gprintf("Closing DB: %s\n", filename.c_str());
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if(cache) fclose(cache);
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cache = NULL;
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}
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template <typename T>
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void CCache<T>::SaveAll(vector<T> list)
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{
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//gprintf("Updating DB: %s\n", filename.c_str());
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if(!cache) return;
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fwrite((void *)&list[0], 1, list.size() * sizeof(T), cache);
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}
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template <typename T>
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void CCache<T>::SaveOne(T tmp, u32 index)
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{
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//gprintf("Updating Item number %u in DB: %s\n", index, filename.c_str());
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if(!cache) return;
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fseek(cache, index * sizeof(T), SEEK_SET);
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fwrite((void *)&tmp, 1, sizeof(T), cache);
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}
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template <typename T>
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void CCache<T>::LoadAll(vector<T> &list)
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{
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if(!cache) return;
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//gprintf("Loading DB: %s\n", filename.c_str());
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T tmp;
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fseek(cache, 0, SEEK_END);
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u64 fileSize = ftell(cache);
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fseek(cache, 0, SEEK_SET);
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u32 count = (u32)(fileSize / sizeof(T));
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list.reserve(count + list.size());
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for(u32 i = 0; i < count; i++)
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{
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LoadOne(tmp, i);
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list.push_back(tmp);
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}
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}
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template <typename T>
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void CCache<T>::LoadOne(T &tmp, u32 index)
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{
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if(!cache) return;
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//gprintf("Fetching Item number %u in DB: %s\n", index, filename.c_str());
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fseek(cache, index * sizeof(T), SEEK_SET);
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fread((void *)&tmp, 1, sizeof(T), cache);
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//gprintf("Path %s\n", tmp.path);
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}
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template <typename T>
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void CCache<T>::AddOne(vector<T> &list, T tmp)
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{
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//gprintf("Adding Item number %u in DB: %s\n", list.size()+1, filename.c_str());
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list.push_back(tmp);
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if(!cache) return;
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fwrite((void *)&tmp, 1, sizeof(T), cache); // FILE* is opened as "ab+" so its always written to the EOF.
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}
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template <typename T>
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void CCache<T>::RemoveOne(vector<T> &list, u32 index)
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{
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//gprintf("Removing Item number %u in DB: %s\n", index, filename.c_str());
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list.erase(list.begin() + index);
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SaveAll(list);
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}
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template class CCache<dir_discHdr>; |