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86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
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// Copyright (c) 2024 Epic Games Tools
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// Licensed under the MIT license (https://opensource.org/license/mit/)
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////////////////////////////////
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//~ rjf: Filesystem Helpers (Helpers, Implemented Once)
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MD_B32
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md_os_write_data_to_file_path(MD_String8 path, MD_String8 data)
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{
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MD_B32 good = 0;
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MD_OS_Handle file = md_os_file_open(MD_OS_AccessFlag_Write, path);
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if(! md_os_handle_match(file, md_os_handle_zero()))
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{
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good = 1;
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md_os_file_write(file, md_r1u64(0, data.size), data.str);
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md_os_file_close(file);
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}
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return good;
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}
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MD_B32
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md_os_write_data_list_to_file_path(MD_String8 path, MD_String8List list)
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{
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MD_B32 good = 0;
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MD_OS_Handle file = md_os_file_open(MD_OS_AccessFlag_Write, path);
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if( ! md_os_handle_match(file, md_os_handle_zero()))
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{
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good = 1;
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MD_U64 off = 0;
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for(MD_String8Node* n = list.first; n != 0; n = n->next)
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{
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md_os_file_write(file, md_r1u64(off, off+n->string.size), n->string.str);
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off += n->string.size;
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}
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md_os_file_close(file);
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}
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return good;
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}
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MD_B32
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md_os_append_data_to_file_path(MD_String8 path, MD_String8 data)
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{
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MD_B32 good = 0;
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if(data.size != 0)
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{
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MD_OS_Handle file = md_os_file_open(MD_OS_AccessFlag_Write|MD_OS_AccessFlag_Append, path);
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if( ! md_os_handle_match(file, md_os_handle_zero()))
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{
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good = 1;
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MD_U64 pos = md_os_properties_from_file(file).size;
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md_os_file_write(file, md_r1u64(pos, pos+data.size), data.str);
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md_os_file_close(file);
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}
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}
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return good;
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}
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MD_String8
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md_os_string_from_file_range__arena(MD_Arena* arena, MD_OS_Handle file, MD_Rng1U64 range)
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{
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MD_U64 pre_pos = md_arena_pos(arena);
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MD_String8 result;
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result.size = md_dim_1u64(range);
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result.str = md_push_array__no_zero(arena, MD_U8, result.size);
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MD_U64 actual_read_size = md_os_file_read(file, range, result.str);
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if(actual_read_size < result.size) {
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md_arena_pop_to(arena, pre_pos + actual_read_size);
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result.size = actual_read_size;
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}
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return result;
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}
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MD_String8
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md_os_string_from_file_range__ainfo(MD_AllocatorInfo ainfo, MD_OS_Handle file, MD_Rng1U64 range) {
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MD_String8 result;
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result.size = md_dim_1u64(range);
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result.str = md_alloc_array_no_zero(ainfo, MD_U8, result.size);
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MD_U64 actual_read_size = md_os_file_read(file, range, result.str);
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if ((md_allocator_query_support(ainfo) & MD_AllocatorQuery_ResizeShrink) && actual_read_size < result.size) {
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md_resize(ainfo, result.str, result.size, actual_read_size);
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result.size = actual_read_size;
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}
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return result;
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}
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