104 lines
2.6 KiB
C
104 lines
2.6 KiB
C
/* ========================== *
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* Global data
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* ========================== */
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/* Add resource data to binary */
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Global struct {
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Arena *arena;
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#if RESOURCES_EMBEDDED
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struct tar_archive archive;
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#endif
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} G = ZI, DebugAlias(G, G_resource);
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/* ========================== *
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* Startup
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* ========================== */
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R_StartupReceipt resource_startup(void)
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{
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__prof;
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G.arena = AllocArena(Gibi(64));
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#if RESOURCES_EMBEDDED
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String embedded_data = INC_GetResTar();
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if (embedded_data.len <= 0) {
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P_Panic(Lit("No embedded resources found"));
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}
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G.archive = tar_parse(G.arena, embedded_data, Lit(""));
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#else
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/* Ensure we have the right working directory */
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if (!P_IsDir(Lit("res"))) {
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P_Panic(Lit("Resource directory \"res\" not found. Make sure the executable is being launched from the correct working directory."));
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}
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#endif
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return (R_StartupReceipt) { 0 };
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}
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/* ========================== *
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* Open / close
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* ========================== */
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R_Resource resource_open(String name)
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{
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__prof;
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#if RESOURCES_EMBEDDED
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R_Resource result = ZI;
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struct tar_entry *entry = tar_get(&G.archive, name);
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result._data = entry->data;
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result._name = entry->file_name;
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result._exists = entry->valid;
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return result;
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#else
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R_Resource result = ZI;
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if (name.len < countof(result._name_text)) {
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u8 path_text[RESOURCE_NAME_LEN_MAX + (sizeof("result/") - 1)];
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String path = ZI;
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{
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path_text[0] = 'r';
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path_text[1] = 'e';
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path_text[2] = 's';
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path_text[3] = '/';
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u64 path_text_len = 4;
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CopyBytes(path_text + path_text_len, name.text, name.len);
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path_text_len += name.len;
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path = STRING(path_text_len, path_text);
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}
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P_File file = P_OpenFileReadWait(path);
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P_FileMap file_map = ZI;
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String data = ZI;
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if (file.valid) {
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file_map = P_OpenFileMap(file);
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if (file_map.valid) {
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data = P_GetFileMapData(file_map);
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} else {
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P_CloseFileMap(file_map);
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}
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} else {
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P_CloseFIle(file);
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}
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result._exists = file.valid && file_map.valid;
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result._data = data;
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result._file = file;
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result._file_map = file_map;
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result._name_len = name.len;
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CopyBytes(result._name_text, name.text, name.len);
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} else {
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Assert(0);
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}
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return result;
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#endif
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}
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#if !RESOURCES_EMBEDDED
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void resource_close(R_Resource *res_ptr)
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{
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P_CloseFileMap(res_ptr->_file_map);
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P_CloseFIle(res_ptr->_file);
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}
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#endif
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