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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "DataDirsAccess.h"
#include "DataDirLocater.h"
#include "FileHandler.h"
#include "FileQueryFlags.h"
#include "FileSystem.h"
#include <cassert>
#include <string>
#include <vector>
DataDirsAccess dataDirsAccess;
std::vector<std::string> DataDirsAccess::FindFiles(std::string dir, const std::string& pattern, int flags) const
{
if (!FileSystem::CheckFile(dir)) {
return std::vector<std::string>();
}
FileSystem::FixSlashes(dir);
FileSystem::EnsurePathSepAtEnd(dir);
if (flags & FileQueryFlags::ONLY_DIRS) {
flags |= FileQueryFlags::INCLUDE_DIRS;
}
return FindFilesInternal(dir, pattern, flags);
}
std::vector<std::string> DataDirsAccess::FindFilesInternal(const std::string& dir, const std::string& pattern, int flags) const
{
std::vector<std::string> matches;
// if it is an absolute path, do not look for it in the data directories
if (FileSystem::IsAbsolutePath(dir)) {
// pass the directory as second directory argument,
// so the path gets included in the matches.
FindFilesSingleDir(matches, "", dir, pattern, flags);
return matches;
}
std::string dir2 = FileSystem::RemoveLocalPathPrefix(dir);
const std::vector<DataDir>& datadirs = dataDirLocater.GetDataDirs();
for (auto d = datadirs.crbegin(); d != datadirs.crend(); ++d) {
FindFilesSingleDir(matches, d->path, dir2, pattern, flags);
}
return matches;
}
std::string DataDirsAccess::LocateFileInternal(const std::string& file) const
{
// if it's an absolute path, don't look for it in the data directories
if (FileSystem::IsAbsolutePath(file)) {
return file;
}
const std::vector<DataDir>& datadirs = dataDirLocater.GetDataDirs();
for (const DataDir& d: datadirs) {
const std::string fn(d.path + file);
// does the file exist, and is it readable?
if (FileSystem::IsReadableFile(fn)) {
return fn;
}
}
return file;
}
void DataDirsAccess::FindFilesSingleDir(std::vector<std::string>& matches, const std::string& datadir, const std::string& dir, const std::string& pattern, int flags) const
{
assert(datadir.empty() || datadir[datadir.length() - 1] == FileSystem::GetNativePathSeparator());
const std::string regexPattern = FileSystem::ConvertGlobToRegex(pattern);
FileSystem::FindFiles(matches, datadir, dir, regexPattern, flags);
}
std::string DataDirsAccess::LocateFile(std::string file, int flags) const
{
if (!FileSystem::CheckFile(file)) {
return "";
}
// if it is an absolute path, do not look for it in the data directories
if (FileSystem::IsAbsolutePath(file)) {
return file;
}
FileSystem::FixSlashes(file);
if (flags & FileQueryFlags::WRITE) {
std::string writeableFile = dataDirLocater.GetWriteDirPath() + file;
FileSystem::FixSlashes(writeableFile);
if (flags & FileQueryFlags::CREATE_DIRS) {
FileSystem::CreateDirectory(FileSystem::GetDirectory(writeableFile));
}
return writeableFile;
}
return LocateFileInternal(file);
}
std::string DataDirsAccess::LocateDir(std::string dir, int flags) const
{
if (!FileSystem::CheckFile(dir)) {
return "";
}
if (FileSystem::IsAbsolutePath(dir)) {
return dir;
}
FileSystem::FixSlashes(dir);
if (flags & FileQueryFlags::WRITE) {
std::string writeableDir = dataDirLocater.GetWriteDirPath() + dir;
FileSystem::FixSlashes(writeableDir);
if (flags & FileQueryFlags::CREATE_DIRS) {
FileSystem::CreateDirectory(writeableDir);
}
return writeableDir;
} else {
const std::vector<std::string>& datadirs = dataDirLocater.GetDataDirPaths();
for (const std::string& dd: datadirs) {
std::string dirPath(dd + dir);
if (FileSystem::DirExists(dirPath)) {
return dirPath;
}
}
return dir;
}
}
std::vector<std::string> DataDirsAccess::LocateDirs(std::string dir) const
{
std::vector<std::string> found;
if (!FileSystem::CheckFile(dir) || FileSystem::IsAbsolutePath(dir)) {
return found;
}
FileSystem::FixSlashes(dir);
const std::vector<std::string>& datadirs = dataDirLocater.GetDataDirPaths();
for (const std::string& dd: datadirs) {
std::string dirPath(dd + dir);
if (FileSystem::DirExists(dirPath)) {
found.push_back(dirPath);
}
}
return found;
}
std::vector<std::string> DataDirsAccess::FindDirsInDirectSubDirs(
const std::string& relPath) const {
std::vector<std::string> found;
static const std::string pattern = "*";
// list of all occurences of the relative path in the data directories
const std::vector<std::string>& rootDirs = LocateDirs(relPath);
// list of subdirs in all occurences of the relative path in the data directories
std::vector<std::string> mainDirs;
// find all subdirectories in the rootDirs
for (const std::string& dir: rootDirs) {
const std::vector<std::string>& localMainDirs = CFileHandler::SubDirs(dir, pattern, SPRING_VFS_RAW);
mainDirs.insert(mainDirs.end(), localMainDirs.begin(), localMainDirs.end());
}
//found.insert(found.end(), mainDirs.begin(), mainDirs.end());
// and add all subdriectories of these
for (const std::string& dir: mainDirs) {
const std::vector<std::string>& subDirs = CFileHandler::SubDirs(dir, pattern, SPRING_VFS_RAW);
found.insert(found.end(), subDirs.begin(), subDirs.end());
}
return found;
}
bool DataDirsAccess::InReadDir(const std::string& path)
{
std::string locatedFile = LocateFile(path);
return (locatedFile != "") && (locatedFile != path);
}
bool DataDirsAccess::InWriteDir(const std::string& path)
{
std::string locatedFile = LocateFile(path, FileQueryFlags::WRITE);
return (locatedFile != "") && (locatedFile != path);
}
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