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/* REminiscence - Flashback interpreter
* Copyright (C) 2005-2011 Gregory Montoir
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef _WIN32
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#else
#include <dirent.h>
#include <sys/stat.h>
#endif
#include "fs.h"
struct FileSystem_impl {
FileSystem_impl() :
_fileList(0), _fileCount(0), _filePathLen(0) {
}
~FileSystem_impl() {
for (int i = 0; i < _fileCount; ++i) {
free(_fileList[i]);
}
free(_fileList);
}
void setRootDirectory(const char *dir) {
_filePathLen = strlen(dir) + 1;
buildFileListFromDirectory(dir);
}
const char *findFilePath(const char *file) {
const int len = strlen(file);
for (int i = 0; i < _fileCount; ++i) {
const char *filePath = _fileList[i];
const int filePathLen = strlen(filePath);
if (filePathLen > len && strcasecmp(filePath + filePathLen - len, file) == 0) {
return filePath;
}
}
return 0;
}
void addFileToList(const char *filePath) {
_fileList = (char **)realloc(_fileList, (_fileCount + 1) * sizeof(char *));
if (_fileList) {
_fileList[_fileCount] = strdup(filePath);
++_fileCount;
}
}
void buildFileListFromDirectory(const char *dir);
char **_fileList;
int _fileCount;
int _filePathLen;
};
#ifdef _WIN32
void FileSystem_impl::buildFileListFromDirectory(const char *dir) {
WIN32_FIND_DATA findData;
char searchPath[MAX_PATH];
snprintf(searchPath, sizeof(searchPath), "%s/*", dir);
HANDLE h = FindFirstFile(searchPath, &findData);
if (h) {
do {
if (findData.cFileName[0] == '.') {
continue;
}
char filePath[MAX_PATH];
snprintf(filePath, sizeof(filePath), "%s/%s", dir, findData.cFileName);
if (findData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
buildFileListFromDirectory(filePath);
} else {
addFileToList(filePath);
}
} while (FindNextFile(h, &findData));
FindClose(h);
}
}
#else
void FileSystem_impl::buildFileListFromDirectory(const char *dir) {
DIR *d = opendir(dir);
if (d) {
dirent *de;
while ((de = readdir(d)) != NULL) {
if (de->d_name[0] == '.') {
continue;
}
char filePath[512];
snprintf(filePath, sizeof(filePath), "%s/%s", dir, de->d_name);
struct stat st;
if (stat(filePath, &st) == 0) {
if (S_ISDIR(st.st_mode)) {
buildFileListFromDirectory(filePath);
} else {
addFileToList(filePath);
}
}
}
closedir(d);
}
}
#endif
FileSystem::FileSystem(const char *dataPath) {
_impl = new FileSystem_impl;
_impl->setRootDirectory(dataPath);
}
FileSystem::~FileSystem() {
delete _impl;
}
const char *FileSystem::findPath(const char *filename) {
return _impl->findFilePath(filename);
}
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