cosmopolitan/libc/intrin/findfirstfile.greg.c

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2022 Justine Alexandra Roberts Tunney                              │
│                                                                              │
│ Permission to use, copy, modify, and/or distribute this software for         │
│ any purpose with or without fee is hereby granted, provided that the         │
│ above copyright notice and this permission notice appear in all copies.      │
│                                                                              │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL                │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED                │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE             │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL         │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR        │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER               │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
│ PERFORMANCE OF THIS SOFTWARE.                                                │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/internal.h"
#include "libc/calls/strace.internal.h"
#include "libc/intrin/describeflags.internal.h"
#include "libc/nt/files.h"
#include "libc/nt/memory.h"
#include "libc/nt/struct/win32finddata.h"
#include "libc/nt/thunk/msabi.h"

__msabi extern typeof(FindFirstFile) *const __imp_FindFirstFileW;

/**
 * Finds first file in directory.
 * @note this wrapper takes care of ABI, STRACE(), and __winerr()
 */
textwindows int64_t FindFirstFile(const char16_t *lpFileName,
                                  struct NtWin32FindData *out_lpFindFileData) {
  int64_t hFindFile;
  hFindFile = __imp_FindFirstFileW(lpFileName, out_lpFindFileData);
  if (hFindFile != -1) {
    STRACE(
        "FindFirstFile(%#hs, [{"
        ".cFileName=%#hs, "
        ".dwFileAttributes=%s, "
        ".dwFileType=%s"
        "}]) → %ld% m",
        lpFileName, out_lpFindFileData->cFileName,
        DescribeNtFileFlagsAndAttributes(out_lpFindFileData->dwFileAttributes),
        DescribeNtFiletypeFlags(out_lpFindFileData->dwFileType), hFindFile);
  } else {
    __winerr();
    STRACE("FindFirstFile(%#hs, [n/a]) → %ld% m", lpFileName, hFindFile);
  }
  return hFindFile;
}