blender/intern/cycles/util/util_path.cpp

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/*
* Copyright 2011-2013 Blender Foundation
*
* 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 "util_debug.h"
#include "util_md5.h"
#include "util_path.h"
#include "util_string.h"
#include <OpenImageIO/strutil.h>
#include <OpenImageIO/sysutil.h>
OIIO_NAMESPACE_USING
#include <stdio.h>
#include <boost/version.hpp>
#if (BOOST_VERSION < 104400)
# define BOOST_FILESYSTEM_VERSION 2
#endif
#include <boost/filesystem.hpp>
#include <boost/algorithm/string.hpp>
CCL_NAMESPACE_BEGIN
static string cached_path = "";
static string cached_user_path = "";
static boost::filesystem::path to_boost(const string& path)
{
return boost::filesystem::path(path.c_str());
}
static string from_boost(const boost::filesystem::path& path)
{
return path.string().c_str();
}
void path_init(const string& path, const string& user_path)
{
cached_path = path;
cached_user_path = user_path;
#ifdef _MSC_VER
// fix for https://svn.boost.org/trac/boost/ticket/6320
boost::filesystem::path::imbue( std::locale( "" ) );
#endif
}
string path_get(const string& sub)
{
if(cached_path == "")
cached_path = path_dirname(Sysutil::this_program_path());
return path_join(cached_path, sub);
}
string path_user_get(const string& sub)
{
if(cached_user_path == "")
cached_user_path = path_dirname(Sysutil::this_program_path());
return path_join(cached_user_path, sub);
}
string path_filename(const string& path)
{
#if (BOOST_FILESYSTEM_VERSION == 2)
return to_boost(path).filename();
#else
return from_boost(to_boost(path).filename());
#endif
}
string path_dirname(const string& path)
{
return from_boost(to_boost(path).parent_path());
}
string path_join(const string& dir, const string& file)
{
return from_boost((to_boost(dir) / to_boost(file)));
}
string path_escape(const string& path)
{
string result = path;
boost::replace_all(result, " ", "\\ ");
return result;
}
bool path_is_relative(const string& path)
{
return to_boost(path).is_relative();
}
bool path_exists(const string& path)
{
return boost::filesystem::exists(to_boost(path));
}
static void path_files_md5_hash_recursive(MD5Hash& hash, const string& dir)
{
boost::filesystem::path dirpath = to_boost(dir);
if(boost::filesystem::exists(dirpath)) {
boost::filesystem::directory_iterator it(dirpath), it_end;
for(; it != it_end; it++) {
if(boost::filesystem::is_directory(it->status())) {
path_files_md5_hash_recursive(hash, from_boost(it->path()));
}
else {
string filepath = from_boost(it->path());
hash.append((const uint8_t*)filepath.c_str(), filepath.size());
hash.append_file(filepath);
}
}
}
}
string path_files_md5_hash(const string& dir)
{
/* computes md5 hash of all files in the directory */
MD5Hash hash;
path_files_md5_hash_recursive(hash, dir);
return hash.get_hex();
}
void path_create_directories(const string& path)
{
boost::filesystem::create_directories(to_boost(path_dirname(path)));
}
bool path_write_binary(const string& path, const vector<uint8_t>& binary)
{
path_create_directories(path);
/* write binary file from memory */
FILE *f = path_fopen(path, "wb");
if(!f)
return false;
if(binary.size() > 0)
fwrite(&binary[0], sizeof(uint8_t), binary.size(), f);
fclose(f);
return true;
}
bool path_write_text(const string& path, string& text)
{
vector<uint8_t> binary(text.length(), 0);
std::copy(text.begin(), text.end(), binary.begin());
return path_write_binary(path, binary);
}
bool path_read_binary(const string& path, vector<uint8_t>& binary)
{
binary.resize(boost::filesystem::file_size(to_boost(path)));
/* read binary file into memory */
FILE *f = path_fopen(path, "rb");
if(!f)
return false;
if(binary.size() == 0) {
fclose(f);
return false;
}
if(fread(&binary[0], sizeof(uint8_t), binary.size(), f) != binary.size()) {
fclose(f);
return false;
}
fclose(f);
return true;
}
bool path_read_text(const string& path, string& text)
{
vector<uint8_t> binary;
if(!path_exists(path) || !path_read_binary(path, binary))
return false;
const char *str = (const char*)&binary[0];
size_t size = binary.size();
text = string(str, size);
return true;
}
uint64_t path_modified_time(const string& path)
{
if(boost::filesystem::exists(to_boost(path)))
return (uint64_t)boost::filesystem::last_write_time(to_boost(path));
return 0;
}
string path_source_replace_includes(const string& source_, const string& path)
{
/* our own little c preprocessor that replaces #includes with the file
2012-06-09 17:22:52 +00:00
* contents, to work around issue of opencl drivers not supporting
* include paths with spaces in them */
string source = source_;
const string include = "#include \"";
size_t n, pos = 0;
while((n = source.find(include, pos)) != string::npos) {
size_t n_start = n + include.size();
size_t n_end = source.find("\"", n_start);
string filename = source.substr(n_start, n_end - n_start);
string text, filepath = path_join(path, filename);
if(path_read_text(filepath, text)) {
text = path_source_replace_includes(text, path_dirname(filepath));
source.replace(n, n_end + 1 - n, "\n" + text + "\n");
}
else
pos = n_end;
}
return source;
}
FILE *path_fopen(const string& path, const string& mode)
{
return fopen(path.c_str(), mode.c_str());
}
void path_cache_clear_except(const string& name, const set<string>& except)
{
string dir = path_user_get("cache");
if(boost::filesystem::exists(dir)) {
boost::filesystem::directory_iterator it(dir), it_end;
for(; it != it_end; it++) {
#if (BOOST_FILESYSTEM_VERSION == 2)
string filename = from_boost(it->path().filename());
#else
string filename = from_boost(it->path().filename().string());
#endif
if(boost::starts_with(filename, name))
if(except.find(filename) == except.end())
boost::filesystem::remove(to_boost(filename));
}
}
}
CCL_NAMESPACE_END