/***
*findfile.c - C find file functions
*
* Copyright (c) 1991-1993, Microsoft Corporation. All rights reserved.
*
*Purpose:
* Defines findfirst(), findnext(), and findclose().
*
*Revision History:
* 08-21-91 BWM Wrote Win32 versions.
* 09-13-91 BWM Changed handle type to long.
* 08-18-92 SKS Add a call to FileTimeToLocalFileTime
* as a temporary fix until _dtoxtime takes UTC
* 08-26-92 SKS creation and last access time should be same as the
* last write time if ctime/atime are not available.
* 01-08-93 SKS Remove change I made 8-26-92. Previous behavior
* was deemed "by design" and preferable.
* 03-30-93 GJF Replaced reference to _dtoxtime with __gmtotime_t. Also
* made _timet_from_ft a static function.
*
*******************************************************************************/
#include <cruntime.h>
#include <oscalls.h>
#include <errno.h>
#include <io.h>
#include <time.h>
#include <ctime.h>
#include <string.h>
#include <internal.h>
#if !defined(_WIN32_)
#error ERROR - ONLY WIN32 TARGET SUPPORTED!
#endif
static time_t _CRTAPI3 _timet_from_ft(FILETIME * pft);
/***
*long findfirst(wildspec, finddata) - Find first matching file
*
*Purpose:
* Finds the first file matching a given wild card filespec and
* returns data about the file.
*
*Entry:
* char * wild - file spec optionally containing wild cards
*
* struct _finddata_t * finddata - structure to receive file data
*
*Exit:
* Good return:
* Unique handle identifying the group of files matching the spec
*
* Error return:
* Returns -1 and errno is set to error value
*
*Exceptions:
* None.
*
*******************************************************************************/
long _CRTAPI1 _findfirst(char * szWild, struct _finddata_t * pfd)
{
WIN32_FIND_DATA wfd;
HANDLE hFile;
DWORD err;
if ((hFile = FindFirstFile(szWild, &wfd)) == INVALID_HANDLE_VALUE) {
err = GetLastError();
switch (err) {
case ERROR_NO_MORE_FILES:
case ERROR_FILE_NOT_FOUND:
case ERROR_PATH_NOT_FOUND:
errno = ENOENT;
break;
case ERROR_NOT_ENOUGH_MEMORY:
errno = ENOMEM;
break;
default:
errno = EINVAL;
break;
}
return (-1);
}
pfd->attrib = (wfd.dwFileAttributes == FILE_ATTRIBUTE_NORMAL)
? 0 : wfd.dwFileAttributes;
pfd->time_create = _timet_from_ft(&wfd.ftCreationTime);
pfd->time_access = _timet_from_ft(&wfd.ftLastAccessTime);
pfd->time_write = _timet_from_ft(&wfd.ftLastWriteTime);
pfd->size = wfd.nFileSizeLow;
strcpy(pfd->name, wfd.cFileName);
return ((long)hFile);
}
/***
*int _findnext(hfind, finddata) - Find next matching file
*
*Purpose:
* Finds the next file matching a given wild card filespec and
* returns data about the file.
*
*Entry:
* hfind - handle from _findfirst
*
* struct _finddata_t * finddata - structure to receive file data
*
*Exit:
* Good return:
* 0 if file found
* -1 if error or file not found
* errno set
*
*Exceptions:
* None.
*
*******************************************************************************/
int _CRTAPI1 _findnext(long hFile, struct _finddata_t * pfd)
{
WIN32_FIND_DATA wfd;
DWORD err;
if (!FindNextFile((HANDLE)hFile, &wfd)) {
err = GetLastError();
switch (err) {
case ERROR_NO_MORE_FILES:
case ERROR_FILE_NOT_FOUND:
case ERROR_PATH_NOT_FOUND:
errno = ENOENT;
break;
case ERROR_NOT_ENOUGH_MEMORY:
errno = ENOMEM;
break;
default:
errno = EINVAL;
break;
}
return (-1);
}
pfd->attrib = (wfd.dwFileAttributes == FILE_ATTRIBUTE_NORMAL)
? 0 : wfd.dwFileAttributes;
pfd->time_create = _timet_from_ft(&wfd.ftCreationTime);
pfd->time_access = _timet_from_ft(&wfd.ftLastAccessTime);
pfd->time_write = _timet_from_ft(&wfd.ftLastWriteTime);
pfd->size = wfd.nFileSizeLow;
strcpy(pfd->name, wfd.cFileName);
return (0);
}
/***
*int _findclose(hfind) - Release resources of find
*
*Purpose:
* Releases resources of a group of files found by _findfirst and
* _findnext
*
*Entry:
* hfind - handle from _findfirst
*
*Exit:
* Good return:
* 0 if success
* -1 if fail, errno set
*
*Exceptions:
* None.
*
*******************************************************************************/
int _CRTAPI1 _findclose(long hFile)
{
if (!FindClose((HANDLE)hFile)) {
errno = EINVAL;
return (-1);
}
return (0);
}
/***
*time_t _fttotimet(ft) - convert Win32 file time to Xenix time
*
*Purpose:
* converts a Win32 file time value to Xenix time_t
*
*Entry:
* int yr, mo, dy - date
* int hr, mn, sc - time
*
*Exit:
* returns Xenix time value
*
*Exceptions:
*
*******************************************************************************/
static time_t _CRTAPI3 _timet_from_ft(FILETIME * pft)
{
SYSTEMTIME st;
// 0 FILETIME returns a -1 time_t
if (!pft->dwLowDateTime && !pft->dwHighDateTime) {
return (-1L);
}
if (!FileTimeToSystemTime(pft, &st)) {
return (-1L);
}
return ( __gmtotime_t(st.wYear,
st.wMonth,
st.wDay,
st.wHour,
st.wMinute,
st.wSecond) );
}
