71 lines
2.3 KiB
C++
71 lines
2.3 KiB
C++
#ifndef FILE_FIND_H
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#define FILE_FIND_H
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#if defined(_WIN32)
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#include <windows.h>
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#else
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#include <dirent.h>
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#endif
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#include "platform_compat.h"
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namespace fallout {
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// NOTE: This structure is significantly different from what was in the
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// original code. Watcom provides opendir/readdir/closedir implementations,
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// that use Win32 FindFirstFile/FindNextFile under the hood, which in turn
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// is designed to deal with patterns.
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//
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// The first attempt was to use `dirent` implementation by Toni Ronkko
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// (https://github.com/tronkko/dirent), however it appears to be incompatible
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// with what is provided by Watcom. Toni's implementation adds `*` wildcard
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// unconditionally implying `opendir` accepts directory name only, which I
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// guess is fine when your goal is compliance with POSIX implementation.
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// However in Watcom `opendir` can handle file patterns gracefully. The problem
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// can be seen during game startup when cleaning MAPS directory using
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// MAPS\*.SAV pattern. Toni's implementation tries to convert that to pattern
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// for Win32 API, thus making it MAPS\*.SAV\*, which is obviously incorrect
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// path/pattern for any implementation.
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//
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// Eventually I've decided to go with compiler-specific implementation, keeping
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// original implementation for Watcom (not tested). I'm not sure it will work
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// in other compilers, so for now just stick with the error.
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typedef struct DirectoryFileFindData {
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#if defined(_WIN32)
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HANDLE hFind;
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WIN32_FIND_DATAA ffd;
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#else
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DIR* dir;
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struct dirent* entry;
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char pattern[COMPAT_MAX_FNAME];
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#endif
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} DirectoryFileFindData;
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bool fileFindFirst(const char* path, DirectoryFileFindData* findData);
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bool fileFindNext(DirectoryFileFindData* findData);
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bool findFindClose(DirectoryFileFindData* findData);
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static inline bool fileFindIsDirectory(DirectoryFileFindData* findData)
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{
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#if defined(_WIN32)
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return (findData->ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0;
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#elif defined(__WATCOMC__)
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return (findData->entry->d_attr & _A_SUBDIR) != 0;
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#else
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return findData->entry->d_type == DT_DIR;
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#endif
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}
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static inline char* fileFindGetName(DirectoryFileFindData* findData)
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{
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#if defined(_WIN32)
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return findData->ffd.cFileName;
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#else
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return findData->entry->d_name;
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#endif
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}
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} // namespace fallout
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#endif /* FILE_FIND_H */
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