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#include "filesystem.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <io.h>
#include <sysinfoapi.h>
static FsType windows_file_attributes_to_type(DWORD attrs) {
if (attrs == INVALID_FILE_ATTRIBUTES)
return FS_NON_EXISTENT;
else if (attrs & FILE_ATTRIBUTE_DIRECTORY)
return FS_DIRECTORY;
else
return FS_FILE;
}
FsType fs_path_type(char const *path) {
WCHAR wide_path[4100];
if (MultiByteToWideChar(CP_UTF8, 0, path, -1, wide_path, sizeof wide_path) == 0) {
return FS_NON_EXISTENT;
}
return windows_file_attributes_to_type(GetFileAttributesW(wide_path));
}
FsPermission fs_path_permission(char const *path) {
FsPermission permission = 0;
if (_access(path, 04) == 0) permission |= FS_PERMISSION_READ;
if (_access(path, 02) == 0) permission |= FS_PERMISSION_WRITE;
return permission;
}
bool fs_file_exists(char const *path) {
return fs_path_type(path) == FS_FILE;
}
FsDirectoryEntry **fs_list_directory(char const *dirname) {
char file_pattern[1000] = {0};
FsDirectoryEntry **files = NULL;
WIN32_FIND_DATAW find_data;
HANDLE fhandle;
assert(*dirname);
sprintf_s(file_pattern, sizeof file_pattern, "%s%s*", dirname,
dirname[strlen(dirname) - 1] == PATH_SEPARATOR ? "" : PATH_SEPARATOR_STR);
wchar_t wide_pattern[1024] = {0};
MultiByteToWideChar(CP_UTF8, 0, file_pattern, -1, wide_pattern, sizeof wide_pattern - 1);
fhandle = FindFirstFileW(wide_pattern, &find_data);
if (fhandle != INVALID_HANDLE_VALUE) {
// first, figure out number of files
int nfiles = 1, idx = 0;
while (FindNextFileW(fhandle, &find_data)) {
++nfiles;
}
FindClose(fhandle);
// now, fill out files array
files = calloc(nfiles + 1, sizeof *files);
if (files) {
fhandle = FindFirstFileW(wide_pattern, &find_data);
if (fhandle != INVALID_HANDLE_VALUE) {
do {
if (idx < nfiles) {
LPWSTR wide_filename = find_data.cFileName;
size_t wide_len = wcslen(wide_filename);
size_t cap = 4 * wide_len + 4;
FsDirectoryEntry *entry = calloc(1, sizeof *entry + cap);
if (entry) {
if (WideCharToMultiByte(CP_UTF8, 0, wide_filename, (int)wide_len, entry->name, (int)cap - 1, NULL, NULL) == 0)
break;
DWORD attrs = find_data.dwFileAttributes;
entry->type = windows_file_attributes_to_type(attrs);
files[idx++] = entry;
} else break; // stop now
}
} while (FindNextFileW(fhandle, &find_data));
FindClose(fhandle);
}
}
}
return files;
}
int fs_mkdir(char const *path) {
WCHAR wide_path[4100];
if (MultiByteToWideChar(CP_UTF8, 0, path, -1, wide_path, sizeof wide_path) == 0)
return -1;
if (CreateDirectoryW(wide_path, NULL)) {
// directory created successfully
return 1;
} else {
if (GetLastError() == ERROR_ALREADY_EXISTS) // directory already exists
return 0;
else
return -1; // some other error
}
}
int fs_get_cwd(char *buf, size_t buflen) {
assert(buf && buflen);
wchar_t wide_path[4100];
DWORD wide_pathlen = GetCurrentDirectoryW(sizeof wide_path - 1, wide_path);
if (wide_pathlen == 0) return -1;
if (WideCharToMultiByte(CP_UTF8, 0, wide_path, (int)wide_pathlen, buf, (int)buflen, NULL, NULL) == 0)
return 0;
return 1;
}
struct timespec time_last_modified(char const *filename) {
// windows' _stat does not have st_mtim
struct _stat statbuf = {0};
struct timespec ts = {0};
_stat(filename, &statbuf);
ts.tv_sec = statbuf.st_mtime;
return ts;
}
struct timespec time_get(void) {
struct timespec ts = {0};
timespec_get(&ts, TIME_UTC);
return ts;
}
void time_sleep_ns(u64 ns) {
// windows....
Sleep((DWORD)(ns / 1000000));
}
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