import sdl, some tests, nothing work yet

game/temp_storage.cpp

@@ -0,0 +1,96 @@
+#include <map>
+#include <string>
+#include <string_view>
+#include <vector>
+
+extern "C" {
+#include "temp_storage.h"
+}
+
+typedef struct _temp_storage_file_wr {
+    std::vector<uint8_t> *_data;
+} TMPFILE_WR;
+
+typedef struct _temp_storage_file_rd {
+    std::basic_string_view<uint8_t> _data;
+} TMPFILE_RD;
+
+using FileSystem = std::map<std::string, std::vector<uint8_t>, std::less<> >;
+static FileSystem temp_fsystem;
+
+
+void temp_storage_store(const char *name, const void *data, int32_t size) {
+    auto b = reinterpret_cast<const uint8_t *>(data);
+    auto e = b+size;
+    temp_fsystem[std::string(name)] = {b,e};
+}
+
+int32_t temp_storage_find(const char *name) {
+    auto iter = temp_fsystem.find(std::string_view(name));
+    if (iter == temp_fsystem.end()) return -1;
+    return iter->second.size();
+}
+
+int32_t temp_storage_retrieve(const char *name, void *data, int32_t size) {
+    auto iter = temp_fsystem.find(std::string_view(name));
+    if (iter == temp_fsystem.end()) return -1;
+    size = std::min<int32_t>(size, iter->second.size());
+    std::copy(iter->second.begin(), iter->second.end(), reinterpret_cast<uint8_t *>(data));
+    return iter->second.size();
+
+}
+
+void temp_storage_list(void (*callback)(const char*, void*), void *context) {
+    for (const auto &[k,v]: temp_fsystem) {
+        callback(k.c_str(), context);
+    }
+}
+
+void temp_storage_clear() {
+    temp_fsystem.clear();
+}
+
+TMPFILE_RD* temp_storage_open(const char *name) {
+    auto iter = temp_fsystem.find(std::string_view(name));
+    if (iter == temp_fsystem.end()) return NULL;
+    return new TMPFILE_RD{std::basic_string_view<uint8_t>(iter->second.data(), iter->second.size())};
+}
+
+TMPFILE_WR* temp_storage_create(const char *name) {
+    auto &v = temp_fsystem[std::string(name)] = {};
+    return new TMPFILE_WR{&v};
+}
+
+TMPFILE_WR* temp_storage_append(const char *name) {
+    auto &v = temp_fsystem[std::string(name)];
+    return new TMPFILE_WR{&v};
+}
+
+void temp_storage_close_rd(TMPFILE_RD *f) {
+    delete f;
+}
+
+void temp_storage_close_wr(TMPFILE_WR *f) {
+    delete f;
+}
+
+void temp_storage_write(const void *data, uint32_t size, TMPFILE_WR *f) {
+    auto b = reinterpret_cast<const uint8_t *>(data);
+    auto e = b+size;
+    std::copy(b,e, std::back_inserter(*f->_data));
+}
+
+uint32_t temp_storage_read(void *data, uint32_t size, TMPFILE_RD *f) {
+    auto &d = f->_data;
+    auto p = d.substr(0,size);
+    d = d.substr(p.size());
+    auto b = reinterpret_cast<uint8_t *>(data);
+    std::copy(d.begin(), d.end(), b);
+    return p.size();
+}
+
+void temp_storage_skip(TMPFILE_RD *f, int bytes) {
+    auto &d = f->_data;
+    auto p = d.substr(0,bytes);
+    d = d.substr(p.size());
+}