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/* SPDX-License-Identifier: GPL-2.0-or-later */
/** \file
* \ingroup bli
*
* Posix compatibility functions for windows dealing with DIR
* (opendir, readdir, closedir)
*/
#ifdef WIN32
/* Standalone for inclusion in binaries other than Blender. */
# ifdef USE_STANDALONE
# define MEM_mallocN(size, str) ((void)str, malloc(size))
# define MEM_callocN(size, str) ((void)str, calloc(size, 1))
# define MEM_freeN(ptr) free(ptr)
# else
# include "MEM_guardedalloc.h"
# endif
# define WIN32_SKIP_HKEY_PROTECTION /* Need to use `HKEY`. */
# include "BLI_utildefines.h"
# include "BLI_winstuff.h"
# include "utfconv.h"
# define PATH_SUFFIX "\\*"
# define PATH_SUFFIX_LEN 2
/* keep local to this file */
struct __dirstream {
HANDLE handle;
WIN32_FIND_DATAW data;
char path[MAX_PATH + PATH_SUFFIX_LEN];
long dd_loc;
long dd_size;
char dd_buf[4096];
void *dd_direct;
struct dirent direntry;
};
/**
* \note MinGW (FREE_WINDOWS) has #opendir() and #_wopendir(), and only the
* latter accepts a path name of #wchar_t type. Rather than messing up with
* extra #ifdef's here and there, Blender's own implementations of #opendir()
* and related functions are used to properly support paths with non-ASCII
* characters. (kjym3)
*/
DIR *opendir(const char *path)
{
wchar_t *path_16 = alloc_utf16_from_8(path, 0);
int path_len;
DIR *newd = NULL;
if ((GetFileAttributesW(path_16) & FILE_ATTRIBUTE_DIRECTORY) &&
((path_len = strlen(path)) < (sizeof(newd->path) - PATH_SUFFIX_LEN))) {
newd = MEM_mallocN(sizeof(DIR), "opendir");
newd->handle = INVALID_HANDLE_VALUE;
memcpy(newd->path, path, path_len);
memcpy(newd->path + path_len, PATH_SUFFIX, PATH_SUFFIX_LEN + 1);
newd->direntry.d_ino = 0;
newd->direntry.d_off = 0;
newd->direntry.d_reclen = 0;
newd->direntry.d_name = NULL;
}
free(path_16);
return newd;
}
static char *BLI_alloc_utf_8_from_16(wchar_t *in16, size_t add)
{
size_t bsize = count_utf_8_from_16(in16);
char *out8 = NULL;
if (!bsize) {
return NULL;
}
out8 = (char *)MEM_mallocN(sizeof(char) * (bsize + add), "UTF-8 String");
conv_utf_16_to_8(in16, out8, bsize);
return out8;
}
static wchar_t *UNUSED_FUNCTION(BLI_alloc_utf16_from_8)(char *in8, size_t add)
{
size_t bsize = count_utf_16_from_8(in8);
wchar_t *out16 = NULL;
if (!bsize) {
return NULL;
}
out16 = (wchar_t *)MEM_mallocN(sizeof(wchar_t) * (bsize + add), "UTF-16 String");
conv_utf_8_to_16(in8, out16, bsize);
return out16;
}
struct dirent *readdir(DIR *dp)
{
if (dp->direntry.d_name) {
MEM_freeN(dp->direntry.d_name);
dp->direntry.d_name = NULL;
}
if (dp->handle == INVALID_HANDLE_VALUE) {
wchar_t *path_16 = alloc_utf16_from_8(dp->path, 0);
dp->handle = FindFirstFileW(path_16, &(dp->data));
free(path_16);
if (dp->handle == INVALID_HANDLE_VALUE) {
return NULL;
}
dp->direntry.d_name = BLI_alloc_utf_8_from_16(dp->data.cFileName, 0);
return &dp->direntry;
}
else if (FindNextFileW(dp->handle, &(dp->data))) {
dp->direntry.d_name = BLI_alloc_utf_8_from_16(dp->data.cFileName, 0);
return &dp->direntry;
}
else {
return NULL;
}
}
int closedir(DIR *dp)
{
if (dp->direntry.d_name) {
MEM_freeN(dp->direntry.d_name);
}
if (dp->handle != INVALID_HANDLE_VALUE) {
FindClose(dp->handle);
}
MEM_freeN(dp);
return 0;
}
/* End of copied part */
#else
/* intentionally empty for UNIX */
#endif
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