mirror of
https://github.com/OpenMW/openmw.git
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268 lines
8.5 KiB
C++
268 lines
8.5 KiB
C++
#include "resourcehelpers.hpp"
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#include <algorithm>
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#include <sstream>
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#include <string_view>
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#include <components/esm/common.hpp>
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#include <components/esm/refid.hpp>
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#include <components/misc/pathhelpers.hpp>
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#include <components/misc/strings/algorithm.hpp>
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#include <components/misc/strings/lower.hpp>
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#include <components/vfs/manager.hpp>
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#include <components/vfs/pathutil.hpp>
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namespace
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{
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struct MatchPathSeparator
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{
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bool operator()(char ch) const { return ch == '\\' || ch == '/'; }
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};
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std::string getBasename(std::string const& pathname)
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{
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return std::string(
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std::find_if(pathname.rbegin(), pathname.rend(), MatchPathSeparator()).base(), pathname.end());
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}
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}
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bool changeExtension(std::string& path, std::string_view ext)
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{
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std::string::size_type pos = path.rfind('.');
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if (pos != std::string::npos && path.compare(pos, path.length() - pos, ext) != 0)
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{
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path.replace(pos, path.length(), ext);
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return true;
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}
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return false;
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}
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bool Misc::ResourceHelpers::changeExtensionToDds(std::string& path)
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{
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return changeExtension(path, ".dds");
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}
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std::string Misc::ResourceHelpers::correctResourcePath(
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std::span<const std::string_view> topLevelDirectories, std::string_view resPath, const VFS::Manager* vfs)
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{
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/* Bethesda at some point converted all their BSA
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* textures from tga to dds for increased load speed, but all
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* texture file name references were kept as .tga.
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*/
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std::string correctedPath = Misc::StringUtils::lowerCase(resPath);
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// Flatten slashes
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std::replace(correctedPath.begin(), correctedPath.end(), '/', '\\');
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auto bothSeparators = [](char a, char b) { return a == '\\' && b == '\\'; };
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correctedPath.erase(std::unique(correctedPath.begin(), correctedPath.end(), bothSeparators), correctedPath.end());
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// Remove leading separator
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if (!correctedPath.empty() && correctedPath[0] == '\\')
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correctedPath.erase(0, 1);
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// Handle top level directory
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bool needsPrefix = true;
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for (std::string_view potentialTopLevelDirectory : topLevelDirectories)
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{
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if (correctedPath.starts_with(potentialTopLevelDirectory)
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&& correctedPath.size() > potentialTopLevelDirectory.size()
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&& correctedPath[potentialTopLevelDirectory.size()] == '\\')
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{
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needsPrefix = false;
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break;
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}
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else
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{
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std::string topLevelPrefix = std::string{ potentialTopLevelDirectory } + '\\';
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size_t topLevelPos = correctedPath.find('\\' + topLevelPrefix);
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if (topLevelPos != std::string::npos)
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{
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correctedPath.erase(0, topLevelPos + 1);
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needsPrefix = false;
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break;
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}
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}
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}
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if (needsPrefix)
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correctedPath = std::string{ topLevelDirectories.front() } + '\\' + correctedPath;
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std::string origExt = correctedPath;
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// since we know all (GOTY edition or less) textures end
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// in .dds, we change the extension
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bool changedToDds = changeExtensionToDds(correctedPath);
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if (vfs->exists(correctedPath))
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return correctedPath;
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// if it turns out that the above wasn't true in all cases (not for vanilla, but maybe mods)
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// verify, and revert if false (this call succeeds quickly, but fails slowly)
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if (changedToDds && vfs->exists(origExt))
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return origExt;
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// fall back to a resource in the top level directory if it exists
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std::string fallback{ topLevelDirectories.front() };
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fallback += '\\';
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fallback += getBasename(correctedPath);
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if (vfs->exists(fallback))
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return fallback;
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if (changedToDds)
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{
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fallback = topLevelDirectories.front();
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fallback += '\\';
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fallback += getBasename(origExt);
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if (vfs->exists(fallback))
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return fallback;
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}
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return correctedPath;
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}
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std::string Misc::ResourceHelpers::correctTexturePath(std::string_view resPath, const VFS::Manager* vfs)
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{
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return correctResourcePath({ { "textures", "bookart" } }, resPath, vfs);
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}
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std::string Misc::ResourceHelpers::correctIconPath(std::string_view resPath, const VFS::Manager* vfs)
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{
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return correctResourcePath({ { "icons" } }, resPath, vfs);
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}
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std::string Misc::ResourceHelpers::correctBookartPath(std::string_view resPath, const VFS::Manager* vfs)
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{
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return correctResourcePath({ { "bookart", "textures" } }, resPath, vfs);
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}
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std::string Misc::ResourceHelpers::correctBookartPath(
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std::string_view resPath, int width, int height, const VFS::Manager* vfs)
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{
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std::string image = correctBookartPath(resPath, vfs);
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// Apparently a bug with some morrowind versions, they reference the image without the size suffix.
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// So if the image isn't found, try appending the size.
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if (!vfs->exists(image))
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{
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std::stringstream str;
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str << image.substr(0, image.rfind('.')) << "_" << width << "_" << height << image.substr(image.rfind('.'));
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image = Misc::ResourceHelpers::correctBookartPath(str.str(), vfs);
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}
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return image;
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}
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std::string Misc::ResourceHelpers::correctActorModelPath(const std::string& resPath, const VFS::Manager* vfs)
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{
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std::string mdlname = resPath;
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std::string::size_type p = mdlname.find_last_of("/\\");
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if (p != std::string::npos)
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mdlname.insert(mdlname.begin() + p + 1, 'x');
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else
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mdlname.insert(mdlname.begin(), 'x');
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std::string kfname = mdlname;
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if (Misc::StringUtils::ciEndsWith(kfname, ".nif"))
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kfname.replace(kfname.size() - 4, 4, ".kf");
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if (!vfs->exists(kfname))
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{
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return resPath;
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}
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return mdlname;
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}
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std::string Misc::ResourceHelpers::correctMeshPath(std::string_view resPath)
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{
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std::string res = "meshes\\";
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res.append(resPath);
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return res;
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}
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VFS::Path::Normalized Misc::ResourceHelpers::correctSoundPath(VFS::Path::NormalizedView resPath)
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{
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static constexpr VFS::Path::NormalizedView prefix("sound");
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return prefix / resPath;
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}
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std::string Misc::ResourceHelpers::correctMusicPath(const std::string& resPath)
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{
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return "music\\" + resPath;
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}
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std::string_view Misc::ResourceHelpers::meshPathForESM3(std::string_view resPath)
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{
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constexpr std::string_view prefix = "meshes";
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if (resPath.length() < prefix.size() + 1 || !Misc::StringUtils::ciStartsWith(resPath, prefix)
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|| (resPath[prefix.size()] != '/' && resPath[prefix.size()] != '\\'))
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{
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throw std::runtime_error("Path should start with 'meshes\\'");
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}
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return resPath.substr(prefix.size() + 1);
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}
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VFS::Path::Normalized Misc::ResourceHelpers::correctSoundPath(
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VFS::Path::NormalizedView resPath, const VFS::Manager& vfs)
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{
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// Workaround: Bethesda at some point converted some of the files to mp3, but the references were kept as .wav.
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if (!vfs.exists(resPath))
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{
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VFS::Path::Normalized sound(resPath);
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sound.changeExtension("mp3");
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return sound;
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}
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return VFS::Path::Normalized(resPath);
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}
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bool Misc::ResourceHelpers::isHiddenMarker(const ESM::RefId& id)
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{
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return id == "prisonmarker" || id == "divinemarker" || id == "templemarker" || id == "northmarker";
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}
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namespace
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{
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std::string getLODMeshNameImpl(std::string resPath, const VFS::Manager* vfs, std::string_view pattern)
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{
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if (auto w = Misc::findExtension(resPath); w != std::string::npos)
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resPath.insert(w, pattern);
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return VFS::Path::normalizeFilename(resPath);
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}
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std::string getBestLODMeshName(std::string const& resPath, const VFS::Manager* vfs, std::string_view pattern)
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{
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if (const auto& result = getLODMeshNameImpl(resPath, vfs, pattern); vfs->exists(result))
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return result;
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return resPath;
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}
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}
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std::string Misc::ResourceHelpers::getLODMeshName(
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int esmVersion, std::string resPath, const VFS::Manager* vfs, unsigned char lod)
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{
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const std::string distantMeshPattern = [&esmVersion] {
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switch (esmVersion)
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{
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case ESM::VER_120:
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case ESM::VER_130:
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return "_dist";
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case ESM::VER_080:
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case ESM::VER_100:
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return "_far";
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case ESM::VER_094:
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case ESM::VER_170:
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return "_lod";
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default:
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return "";
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}
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}();
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for (int l = lod; l >= 0; --l)
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{
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std::stringstream patern;
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patern << distantMeshPattern << "_" << l;
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std::string const meshName = getBestLODMeshName(resPath, vfs, patern.str());
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if (meshName != resPath)
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return meshName;
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}
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return getBestLODMeshName(resPath, vfs, distantMeshPattern);
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}
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