b9ce231060
More information in this post: http://code.blender.org/ Thanks to all contributes for giving their permission!
137 lines
2.9 KiB
C++
137 lines
2.9 KiB
C++
/*
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* Copyright 2011-2013 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License
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*/
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#include <stdio.h>
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#include "util_cache.h"
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#include "util_debug.h"
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#include "util_foreach.h"
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#include "util_map.h"
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#include "util_md5.h"
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#include "util_path.h"
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#include "util_types.h"
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#include <boost/version.hpp>
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#if (BOOST_VERSION < 104400)
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# define BOOST_FILESYSTEM_VERSION 2
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#endif
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#include <boost/filesystem.hpp>
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#include <boost/algorithm/string.hpp>
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CCL_NAMESPACE_BEGIN
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/* CacheData */
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CacheData::CacheData(const string& name_)
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{
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name = name_;
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f = NULL;
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have_filename = false;
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}
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CacheData::~CacheData()
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{
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if(f)
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fclose(f);
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}
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const string& CacheData::get_filename()
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{
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if(!have_filename) {
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MD5Hash hash;
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foreach(const CacheBuffer& buffer, buffers)
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if(buffer.size)
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hash.append((uint8_t*)buffer.data, buffer.size);
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filename = name + "_" + hash.get_hex();
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have_filename = true;
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}
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return filename;
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}
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/* Cache */
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Cache Cache::global;
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string Cache::data_filename(CacheData& key)
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{
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return path_user_get(path_join("cache", key.get_filename()));
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}
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void Cache::insert(CacheData& key, CacheData& value)
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{
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string filename = data_filename(key);
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path_create_directories(filename);
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FILE *f = fopen(filename.c_str(), "wb");
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if(!f) {
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fprintf(stderr, "Failed to open file %s for writing.\n", filename.c_str());
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return;
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}
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foreach(CacheBuffer& buffer, value.buffers) {
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if(!fwrite(&buffer.size, sizeof(buffer.size), 1, f))
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fprintf(stderr, "Failed to write to file %s.\n", filename.c_str());
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if(buffer.size)
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if(!fwrite(buffer.data, buffer.size, 1, f))
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fprintf(stderr, "Failed to write to file %s.\n", filename.c_str());
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}
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fclose(f);
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}
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bool Cache::lookup(CacheData& key, CacheData& value)
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{
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string filename = data_filename(key);
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FILE *f = fopen(filename.c_str(), "rb");
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if(!f)
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return false;
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value.name = key.name;
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value.f = f;
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return true;
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}
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void Cache::clear_except(const string& name, const set<string>& except)
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{
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string dir = path_user_get("cache");
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if(boost::filesystem::exists(dir)) {
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boost::filesystem::directory_iterator it(dir), it_end;
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for(; it != it_end; it++) {
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#if (BOOST_FILESYSTEM_VERSION == 2)
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string filename = it->path().filename();
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#else
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string filename = it->path().filename().string();
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#endif
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if(boost::starts_with(filename, name))
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if(except.find(filename) == except.end())
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boost::filesystem::remove(it->path());
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}
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}
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}
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CCL_NAMESPACE_END
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