diff options
Diffstat (limited to 'Source/Internal/cachefile.cpp')
-rw-r--r-- | Source/Internal/cachefile.cpp | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/Source/Internal/cachefile.cpp b/Source/Internal/cachefile.cpp new file mode 100644 index 00000000..f255a905 --- /dev/null +++ b/Source/Internal/cachefile.cpp @@ -0,0 +1,85 @@ +//----------------------------------------------------------------------------- +// Name: cachefile.cpp +// Developer: Wolfire Games LLC +// Description: +// License: Read below +//----------------------------------------------------------------------------- +// +// Copyright 2022 Wolfire Games LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. +// +//----------------------------------------------------------------------------- +#include "cachefile.h" + +#include <Internal/checksum.h> +#include <Internal/datemodified.h> +#include <Internal/filesystem.h> + +bool CacheFile::CheckForCache(const std::string &path, const std::string &suffix, std::string *load_path, uint16_t *checksum) { + ModID modsource; + return CheckForCache(path,suffix,load_path,&modsource,checksum); +} + +bool CacheFile::CheckForCache(const std::string &path, const std::string &suffix, std::string *load_path, ModID *load_modsource, uint16_t *checksum){ + std::string cache_str = path + suffix; + + const int kMaxPaths = 5; + char abs_cache_paths[kPathSize * kMaxPaths]; + ModID cache_modsources[kMaxPaths]; + char abs_base_paths[kPathSize * kMaxPaths]; + int num_cache_paths_found = FindFilePaths(cache_str.c_str(), abs_cache_paths, kPathSize, kMaxPaths, kAnyPath, false, NULL, cache_modsources ); + int num_base_paths_found = FindFilePaths(path.c_str(), abs_base_paths, kPathSize, kMaxPaths, kAnyPath, false, NULL, NULL ); + + char* cache_path = &abs_cache_paths[0]; + ModID cache_modsource = cache_modsources[0]; + int64_t latest_cache_date_modified = -1; + if(num_cache_paths_found > 0){ + for(int path_index=0; path_index<num_cache_paths_found; ++path_index){ + char* curr_path = &abs_cache_paths[kPathSize * path_index]; + ModID curr_modsource = cache_modsources[path_index]; + int64_t date_modified = GetDateModifiedInt64(curr_path); + if(date_modified > latest_cache_date_modified){ + latest_cache_date_modified = date_modified; + cache_path = curr_path; + cache_modsource = curr_modsource; + } + } + } + + char* base_path = &abs_base_paths[0]; + int64_t latest_base_date_modified = -1; + if(num_base_paths_found > 0){ + for(int path_index=0; path_index<num_base_paths_found; ++path_index){ + char* curr_path = &abs_base_paths[kPathSize * path_index]; + int64_t date_modified = GetDateModifiedInt64(curr_path); + if(date_modified > latest_base_date_modified){ + latest_base_date_modified = date_modified; + base_path = curr_path; + } + } + } + + if(latest_base_date_modified != -1){ + *checksum = Checksum(base_path); + } else { + *checksum = 0; + } + + if(latest_cache_date_modified != -1){ + *load_path = cache_path; + *load_modsource = cache_modsource; + return true; + } + return false; +} |