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// license:BSD-3-Clause
// copyright-holders:Aaron Giles
//============================================================
//
// windir.c - Win32 OSD core directory access functions
//
//============================================================
// standard windows headers
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <shlwapi.h>
#include <tchar.h>
// standard C headers
#include <stdio.h>
#include <ctype.h>
// MAME headers
#include "osdcore.h"
// MAMEOS headers
#include "strconv.h"
#include "winutil.h"
//============================================================
// TYPE DEFINITIONS
//============================================================
struct osd_directory
{
HANDLE find; // handle to the finder
int is_first; // TRUE if this is the first entry
osd_directory_entry entry; // current entry's data
WIN32_FIND_DATA data; // current raw data
};
//============================================================
// osd_opendir
//============================================================
osd_directory *osd_opendir(const char *dirname)
{
osd_directory *dir = NULL;
TCHAR *t_dirname = NULL;
TCHAR *dirfilter = NULL;
size_t dirfilter_size;
// allocate memory to hold the osd_tool_directory structure
dir = (osd_directory *)malloc(sizeof(*dir));
if (dir == NULL)
goto error;
memset(dir, 0, sizeof(*dir));
// initialize the structure
dir->find = INVALID_HANDLE_VALUE;
dir->is_first = TRUE;
// convert the path to TCHARs
t_dirname = tstring_from_utf8(dirname);
if (t_dirname == NULL)
goto error;
// append \*.* to the directory name
dirfilter_size = _tcslen(t_dirname) + 5;
dirfilter = (TCHAR *)malloc(dirfilter_size * sizeof(*dirfilter));
if (dirfilter == NULL)
goto error;
_sntprintf(dirfilter, dirfilter_size, TEXT("%s\\*.*"), t_dirname);
// attempt to find the first file
dir->find = FindFirstFile(dirfilter, &dir->data);
error:
// cleanup
if (t_dirname != NULL)
osd_free(t_dirname);
if (dirfilter != NULL)
free(dirfilter);
if (dir != NULL && dir->find == INVALID_HANDLE_VALUE)
{
free(dir);
dir = NULL;
}
return dir;
}
//============================================================
// osd_readdir
//============================================================
const osd_directory_entry *osd_readdir(osd_directory *dir)
{
// if we've previously allocated a name, free it now
if (dir->entry.name != NULL)
{
osd_free((void *)dir->entry.name);
dir->entry.name = NULL;
}
// if this isn't the first file, do a find next
if (!dir->is_first)
{
if (!FindNextFile(dir->find, &dir->data))
return NULL;
}
// otherwise, just use the data we already had
else
dir->is_first = FALSE;
// extract the data
dir->entry.name = utf8_from_tstring(dir->data.cFileName);
dir->entry.type = win_attributes_to_entry_type(dir->data.dwFileAttributes);
dir->entry.size = dir->data.nFileSizeLow | ((UINT64) dir->data.nFileSizeHigh << 32);
return (dir->entry.name != NULL) ? &dir->entry : NULL;
}
//============================================================
// osd_closedir
//============================================================
void osd_closedir(osd_directory *dir)
{
// free any data associated
if (dir->entry.name != NULL)
osd_free((void *)dir->entry.name);
if (dir->find != INVALID_HANDLE_VALUE)
FindClose(dir->find);
free(dir);
}
//============================================================
// osd_is_absolute_path
//============================================================
int osd_is_absolute_path(const char *path)
{
int result = FALSE;
TCHAR *t_path = tstring_from_utf8(path);
if (t_path != NULL)
{
result = !PathIsRelative(t_path);
osd_free(t_path);
}
return result;
}
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