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◆ main enhanced-x16-emulator / src / dirent_win32.h
1.4 KiB · Objective-C · last changed chore(): initial commit 25 days ago source blame history raw
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// Commander X16 Emulator
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// POSIX dirent.h compatibility shim for MSVC
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// Wraps Windows FindFirstFile/FindNextFile APIs
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#ifndef DIRENT_WIN32_H
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#define DIRENT_WIN32_H
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#ifdef _MSC_VER
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#include <windows.h>
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#include <errno.h>
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#include <string.h>
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struct dirent {
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	char d_name[MAX_PATH];
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};
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typedef struct {
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	HANDLE           hFind;
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	WIN32_FIND_DATAA fdata;
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	struct dirent    entry;
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	bool             first;
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} DIR;
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static inline DIR *opendir(const char *name)
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{
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	char path[MAX_PATH];
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	size_t len = strlen(name);
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	if (len == 0 || len + 3 > MAX_PATH) {
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		errno = ENOENT;
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		return NULL;
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	}
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	snprintf(path, MAX_PATH, "%s\\*", name);
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	DIR *dir = (DIR *)malloc(sizeof(DIR));
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	if (!dir) {
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		errno = ENOMEM;
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		return NULL;
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	}
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	dir->hFind = FindFirstFileA(path, &dir->fdata);
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	if (dir->hFind == INVALID_HANDLE_VALUE) {
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		free(dir);
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		errno = ENOENT;
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		return NULL;
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	}
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	dir->first = true;
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	return dir;
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}
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static inline struct dirent *readdir(DIR *dir)
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{
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	if (!dir)
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		return NULL;
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	if (dir->first) {
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		dir->first = false;
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	} else {
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		if (!FindNextFileA(dir->hFind, &dir->fdata))
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			return NULL;
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	}
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	strncpy(dir->entry.d_name, dir->fdata.cFileName, MAX_PATH);
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	dir->entry.d_name[MAX_PATH - 1] = '\0';
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	return &dir->entry;
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}
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static inline int closedir(DIR *dir)
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{
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	if (!dir)
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		return -1;
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	FindClose(dir->hFind);
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	free(dir);
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	return 0;
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}
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#else
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#include <dirent.h>
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#endif // _MSC_VER
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#endif // DIRENT_WIN32_H