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fs: Fix RomFS building when zero byte files are present

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When zero byte files are present, the key (offset) for that file is identical to the file right after. A std::map isn't able to fit key-value pairs with identical keys (offsets), therefore, the solution is to use std::multimap which permits multiple entries with the same key.

This most prominently fixes Pokemon Sword and Shield weather with any RomFS mod applied.
This commit is contained in:
Morph
2020-07-12 04:31:01 -04:00
parent e60733aad3
commit fd1c3aa14e
4 changed files with 10 additions and 10 deletions
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4
src/core/file_sys/fsmitm_romfsbuild.cpp
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@ -240,7 +240,7 @@ RomFSBuildContext::RomFSBuildContext(VirtualDir base_, VirtualDir ext_)
RomFSBuildContext::~RomFSBuildContext() = default;
std::map<u64, VirtualFile> RomFSBuildContext::Build() {
std::multimap<u64, VirtualFile> RomFSBuildContext::Build() {
const u64 dir_hash_table_entry_count = romfs_get_hash_table_count(num_dirs);
const u64 file_hash_table_entry_count = romfs_get_hash_table_count(num_files);
dir_hash_table_size = 4 * dir_hash_table_entry_count;
@ -294,7 +294,7 @@ std::map<u64, VirtualFile> RomFSBuildContext::Build() {
cur_dir->parent->child = cur_dir;
}
std::map<u64, VirtualFile> out;
std::multimap<u64, VirtualFile> out;
// Populate file tables.
for (const auto& it : files) {