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RiivolutionPatcher: More closely match behavior of folder patches to actual Riivolution.

This commit is contained in:
Admiral H. Curtiss 2021-10-31 03:57:51 +01:00
parent 38fcb9d517
commit 335a1b5cb5
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GPG Key ID: F051B4C4044F33FB
1 changed files with 55 additions and 78 deletions
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141
Source/Core/DiscIO/RiivolutionPatcher.cpp
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@ -10,6 +10,8 @@
#include <string_view>
#include <vector>
#include <fmt/format.h>
#include "Common/FileUtil.h"
#include "Common/IOFile.h"
#include "Common/StringUtil.h"
@ -381,76 +383,9 @@ static void FindFilenameNodesInFST(std::vector<DiscIO::FSTBuilderNode*>* nodes_o
}
}
static void ApplyFolderPatchToFST(const Patch& patch, const Folder& folder,
const std::vector<FileDataLoader::Node>& external_files,
const std::string& external_path, bool recursive,
std::string_view disc_path,
static void ApplyFilePatchToFST(const Patch& patch, const File& file,
std::vector<DiscIO::FSTBuilderNode>* fst)
{
for (const auto& child : external_files)
{
const std::string child_disc_path = std::string(disc_path) + "/" + child.m_filename;
const std::string child_external_path = external_path + "/" + child.m_filename;
if (child.m_is_directory)
{
if (recursive)
{
ApplyFolderPatchToFST(patch, folder,
patch.m_file_data_loader->GetFolderContents(child_external_path),
child_external_path, recursive, child_disc_path, fst);
}
}
else
{
DiscIO::FSTBuilderNode* node = FindFileNodeInFST(child_disc_path, fst, folder.m_create);
if (node)
ApplyPatchToFile(patch, node, child_external_path, 0, 0, folder.m_length, folder.m_resize);
}
}
}
static void ApplyUnknownFolderPatchToFST(const Patch& patch, const Folder& folder,
const std::vector<FileDataLoader::Node>& external_files,
const std::string& external_path, bool recursive,
std::vector<DiscIO::FSTBuilderNode>* fst)
{
for (const auto& child : external_files)
{
const std::string child_external_path = external_path + "/" + child.m_filename;
if (child.m_is_directory)
{
if (recursive)
{
ApplyUnknownFolderPatchToFST(
patch, folder, patch.m_file_data_loader->GetFolderContents(child_external_path),
child_external_path, recursive, fst);
}
}
else
{
std::vector<DiscIO::FSTBuilderNode*> nodes;
FindFilenameNodesInFST(&nodes, child.m_filename, fst);
for (auto* node : nodes)
ApplyPatchToFile(patch, node, child_external_path, 0, 0, folder.m_length, folder.m_resize);
}
}
}
void ApplyPatchesToFiles(const std::vector<Patch>& patches,
std::vector<DiscIO::FSTBuilderNode>* fst, DiscIO::FSTBuilderNode* dol_node)
{
// For file searching purposes, Riivolution assumes that the game's main.dol is in the root of the
// file system. So to avoid doing a bunch of special case handling for that, we just put a node
// for this into the FST and remove it again after the file patching is done.
// We mark the inserted node with a pointer to a stack variable so we can find it again.
int marker = 0;
fst->emplace_back(DiscIO::FSTBuilderNode{"main.dol", dol_node->m_size,
std::move(dol_node->m_content), &marker});
for (const auto& patch : patches)
{
for (const auto& file : patch.m_file_patches)
{
if (!file.m_disc.empty() && file.m_disc[0] == '/')
{
// If the disc path starts with a / then we should patch that specific disc path.
@ -467,29 +402,71 @@ void ApplyPatchesToFiles(const std::vector<Patch>& patches,
for (auto* node : nodes)
ApplyPatchToFile(patch, file, node);
}
}
}
for (const auto& folder : patch.m_folder_patches)
static void ApplyFolderPatchToFST(const Patch& patch, const Folder& folder,
std::vector<DiscIO::FSTBuilderNode>* fst,
std::string_view disc_path, std::string_view external_path)
{
const auto external_files = patch.m_file_data_loader->GetFolderContents(external_path);
for (const auto& child : external_files)
{
const auto external_files = patch.m_file_data_loader->GetFolderContents(folder.m_external);
const auto combine_paths = [](std::string_view a, std::string_view b) {
if (a.empty())
return std::string(b);
if (b.empty())
return std::string(a);
if (StringEndsWith(a, "/"))
a.remove_suffix(1);
if (StringBeginsWith(b, "/"))
b.remove_prefix(1);
return fmt::format("{}/{}", a, b);
};
std::string child_disc_path = combine_paths(disc_path, child.m_filename);
std::string child_external_path = combine_paths(external_path, child.m_filename);
std::string_view disc_path = folder.m_disc;
while (StringBeginsWith(disc_path, "/"))
disc_path.remove_prefix(1);
while (StringEndsWith(disc_path, "/"))
disc_path.remove_suffix(1);
if (disc_path.empty())
if (child.m_is_directory)
{
ApplyUnknownFolderPatchToFST(patch, folder, external_files, folder.m_external,
folder.m_recursive, fst);
if (folder.m_recursive)
ApplyFolderPatchToFST(patch, folder, fst, child_disc_path, child_external_path);
}
else
{
ApplyFolderPatchToFST(patch, folder, external_files, folder.m_external, folder.m_recursive,
disc_path, fst);
File file;
file.m_disc = std::move(child_disc_path);
file.m_external = std::move(child_external_path);
file.m_resize = folder.m_resize;
file.m_create = folder.m_create;
file.m_length = folder.m_length;
ApplyFilePatchToFST(patch, file, fst);
}
}
}
static void ApplyFolderPatchToFST(const Patch& patch, const Folder& folder,
std::vector<DiscIO::FSTBuilderNode>* fst)
{
ApplyFolderPatchToFST(patch, folder, fst, folder.m_disc, folder.m_external);
}
void ApplyPatchesToFiles(const std::vector<Patch>& patches,
std::vector<DiscIO::FSTBuilderNode>* fst, DiscIO::FSTBuilderNode* dol_node)
{
// For file searching purposes, Riivolution assumes that the game's main.dol is in the root of the
// file system. So to avoid doing a bunch of special case handling for that, we just put a node
// for this into the FST and remove it again after the file patching is done.
// We mark the inserted node with a pointer to a stack variable so we can find it again.
int marker = 0;
fst->emplace_back(DiscIO::FSTBuilderNode{"main.dol", dol_node->m_size,
std::move(dol_node->m_content), &marker});
for (const auto& patch : patches)
{
for (const auto& file : patch.m_file_patches)
ApplyFilePatchToFST(patch, file, fst);
for (const auto& folder : patch.m_folder_patches)
ApplyFolderPatchToFST(patch, folder, fst);
}
// Remove the inserted main.dol node again and propagate its changes.