mirror of
https://github.com/reactos/reactos.git
synced 2024-11-20 06:15:26 +00:00
338 lines
8.1 KiB
C
338 lines
8.1 KiB
C
/*
|
|
* WHERE.C - file search functions.
|
|
*
|
|
*
|
|
* History:
|
|
*
|
|
* 07/15/95 (Tim Norman)
|
|
* started.
|
|
*
|
|
* 08/08/95 (Matt Rains)
|
|
* i have cleaned up the source code. changes now bring this source
|
|
* into guidelines for recommended programming practice.
|
|
*
|
|
* 12/12/95 (Steffan Kaiser & Tim Norman)
|
|
* added some patches to fix some things and make more efficient
|
|
*
|
|
* 1/6/96 (Tim Norman)
|
|
* fixed a stupid pointer mistake...
|
|
* Thanks to everyone who noticed it!
|
|
*
|
|
* 8/1/96 (Tim Norman)
|
|
* fixed a bug when getenv returns NULL
|
|
*
|
|
* 8/7/96 (Steffan Kaiser and Tim Norman)
|
|
* speed improvements and bug fixes
|
|
*
|
|
* 8/27/96 (Tim Norman)
|
|
* changed code to use pointers directly into PATH environment
|
|
* variable rather than making our own copy. This saves some memory,
|
|
* but requires we write our own function to copy pathnames out of
|
|
* the variable.
|
|
*
|
|
* 12/23/96 (Aaron Kaufman)
|
|
* Fixed a bug in get_paths() that did not point to the first PATH
|
|
* in the environment variable.
|
|
*
|
|
* 7/12/97 (Tim Norman)
|
|
* Apparently, Aaron's bugfix got lost, so I fixed it again.
|
|
*
|
|
* 16 July 1998 (John P. Price)
|
|
* Added stand alone code.
|
|
*
|
|
* 17 July 1998 (John P. Price)
|
|
* Rewrote find_which to use searchpath function
|
|
*
|
|
* 24-Jul-1998 (John P Price <linux-guru@gcfl.net>)
|
|
* fixed bug where didn't check all extensions when path was specified
|
|
*
|
|
* 27-Jul-1998 (John P Price <linux-guru@gcfl.net>)
|
|
* added config.h include
|
|
*
|
|
* 30-Jul-1998 (John P Price <linux-guru@gcfl.net>)
|
|
* fixed so that it find_which returns NULL if filename is not
|
|
* executable (does not have .bat, .com, or .exe extention).
|
|
* Before command would to execute any file with any extension (opps!)
|
|
*
|
|
* 03-Dec-1998 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
|
|
* Changed find_which().
|
|
*
|
|
* 07-Dec-1998 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
|
|
* Added ".CMD" extension.
|
|
* Replaced numeric constant by _NR_OF_EXTENSIONS.
|
|
*
|
|
* 26-Feb-1999 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
|
|
* Replaced find_which() by SearchForExecutable().
|
|
* Now files are searched using the right extension order.
|
|
*
|
|
* 20-Apr-1999 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
|
|
* Some minor changes and improvements.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <windows.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "cmd.h"
|
|
|
|
|
|
/* initial size of environment variable buffer */
|
|
#define ENV_BUFFER_SIZE 1024
|
|
|
|
|
|
static LPTSTR ext[] = {".bat", ".cmd", ".com", ".exe"};
|
|
static INT nExtCount = sizeof(ext) / sizeof(LPTSTR);
|
|
|
|
|
|
/* searches for file using path info. */
|
|
|
|
BOOL
|
|
SearchForExecutable (LPCTSTR pFileName, LPTSTR pFullName)
|
|
{
|
|
TCHAR szPathBuffer[MAX_PATH];
|
|
LPTSTR pszBuffer = NULL;
|
|
DWORD dwBuffer, len;
|
|
INT n;
|
|
LPTSTR p,s,f;
|
|
|
|
|
|
/* initialize full name buffer */
|
|
*pFullName = _T('\0');
|
|
|
|
#ifdef _DEBUG
|
|
DebugPrintf (_T("SearchForExecutable: \'%s\'\n"), pFileName);
|
|
#endif
|
|
|
|
if (_tcschr (pFileName, _T('\\')) != NULL)
|
|
{
|
|
LPTSTR pFilePart;
|
|
#ifdef _DEBUG
|
|
DebugPrintf (_T("Absolute or relative path is given.\n"));
|
|
#endif
|
|
|
|
|
|
|
|
|
|
if (GetFullPathName (pFileName,
|
|
MAX_PATH,
|
|
szPathBuffer,
|
|
&pFilePart) ==0)
|
|
return FALSE;
|
|
|
|
|
|
if(pFilePart == 0)
|
|
return FALSE;
|
|
|
|
|
|
|
|
if (_tcschr (pFilePart, _T('.')) != NULL)
|
|
{
|
|
#ifdef _DEBUG
|
|
DebugPrintf (_T("Filename extension!\n"));
|
|
#endif
|
|
_tcscpy (pFullName, szPathBuffer);
|
|
return TRUE;
|
|
|
|
}
|
|
else
|
|
{
|
|
#ifdef _DEBUG
|
|
DebugPrintf (_T("No filename extension!\n"));
|
|
#endif
|
|
|
|
p = szPathBuffer + _tcslen (szPathBuffer);
|
|
|
|
for (n = 0; n < nExtCount; n++)
|
|
{
|
|
_tcscpy (p, ext[n]);
|
|
|
|
#ifdef _DEBUG
|
|
DebugPrintf (_T("Testing: \'%s\'\n"), szPathBuffer);
|
|
#endif
|
|
|
|
if (IsValidFileName (szPathBuffer))
|
|
{
|
|
#ifdef _DEBUG
|
|
DebugPrintf (_T("Found: \'%s\'\n"), szPathBuffer);
|
|
#endif
|
|
_tcscpy (pFullName, szPathBuffer);
|
|
return TRUE;
|
|
}
|
|
}
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/* load environment varable PATH into buffer */
|
|
pszBuffer = (LPTSTR)malloc (ENV_BUFFER_SIZE * sizeof(TCHAR));
|
|
dwBuffer = GetEnvironmentVariable (_T("PATH"), pszBuffer, ENV_BUFFER_SIZE);
|
|
if (dwBuffer > ENV_BUFFER_SIZE)
|
|
{
|
|
pszBuffer = (LPTSTR)realloc (pszBuffer, dwBuffer * sizeof (TCHAR));
|
|
GetEnvironmentVariable (_T("PATH"), pszBuffer, dwBuffer * sizeof (TCHAR));
|
|
}
|
|
|
|
if (!(p = _tcsrchr (pFileName, _T('.'))) ||
|
|
_tcschr (p + 1, _T('\\')))
|
|
{
|
|
/* There is no extension ==> test all the extensions. */
|
|
#ifdef _DEBUG
|
|
DebugPrintf (_T("No filename extension!\n"));
|
|
#endif
|
|
|
|
/* search in current directory */
|
|
len = GetCurrentDirectory (MAX_PATH, szPathBuffer);
|
|
if (szPathBuffer[len - 1] != _T('\\'))
|
|
{
|
|
szPathBuffer[len] = _T('\\');
|
|
szPathBuffer[len + 1] = _T('\0');
|
|
}
|
|
_tcscat (szPathBuffer, pFileName);
|
|
|
|
p = szPathBuffer + _tcslen (szPathBuffer);
|
|
|
|
for (n = 0; n < nExtCount; n++)
|
|
{
|
|
_tcscpy (p, ext[n]);
|
|
|
|
#ifdef _DEBUG
|
|
DebugPrintf (_T("Testing: \'%s\'\n"), szPathBuffer);
|
|
#endif
|
|
|
|
if (IsValidFileName (szPathBuffer))
|
|
{
|
|
#ifdef _DEBUG
|
|
DebugPrintf (_T("Found: \'%s\'\n"), szPathBuffer);
|
|
#endif
|
|
free (pszBuffer);
|
|
_tcscpy (pFullName, szPathBuffer);
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
/* search in PATH */
|
|
s = pszBuffer;
|
|
while (s && *s)
|
|
{
|
|
f = _tcschr (s, _T(';'));
|
|
|
|
if (f)
|
|
{
|
|
_tcsncpy (szPathBuffer, s, (size_t)(f-s));
|
|
szPathBuffer[f-s] = _T('\0');
|
|
s = f + 1;
|
|
}
|
|
else
|
|
{
|
|
_tcscpy (szPathBuffer, s);
|
|
s = NULL;
|
|
}
|
|
|
|
len = _tcslen(szPathBuffer);
|
|
if (szPathBuffer[len - 1] != _T('\\'))
|
|
{
|
|
szPathBuffer[len] = _T('\\');
|
|
szPathBuffer[len + 1] = _T('\0');
|
|
}
|
|
_tcscat (szPathBuffer, pFileName);
|
|
|
|
p = szPathBuffer + _tcslen (szPathBuffer);
|
|
|
|
for (n = 0; n < nExtCount; n++)
|
|
{
|
|
_tcscpy (p, ext[n]);
|
|
|
|
#ifdef _DEBUG
|
|
DebugPrintf (_T("Testing: \'%s\'\n"), szPathBuffer);
|
|
#endif
|
|
|
|
if (IsValidFileName (szPathBuffer))
|
|
{
|
|
#ifdef _DEBUG
|
|
DebugPrintf (_T("Found: \'%s\'\n"), szPathBuffer);
|
|
#endif
|
|
free (pszBuffer);
|
|
_tcscpy (pFullName, szPathBuffer);
|
|
return TRUE;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* There is an extension and it is in the last path component, */
|
|
/* so don't test all the extensions. */
|
|
#ifdef _DEBUG
|
|
DebugPrintf (_T("Filename extension!\n"));
|
|
#endif
|
|
|
|
/* search in current directory */
|
|
len = GetCurrentDirectory (MAX_PATH, szPathBuffer);
|
|
if (szPathBuffer[len - 1] != _T('\\'))
|
|
{
|
|
szPathBuffer[len] = _T('\\');
|
|
szPathBuffer[len + 1] = _T('\0');
|
|
}
|
|
_tcscat (szPathBuffer, pFileName);
|
|
|
|
#ifdef _DEBUG
|
|
DebugPrintf (_T("Testing: \'%s\'\n"), szPathBuffer);
|
|
#endif
|
|
if (IsValidFileName (szPathBuffer))
|
|
{
|
|
#ifdef _DEBUG
|
|
DebugPrintf (_T("Found: \'%s\'\n"), szPathBuffer);
|
|
#endif
|
|
free (pszBuffer);
|
|
_tcscpy (pFullName, szPathBuffer);
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/* search in PATH */
|
|
s = pszBuffer;
|
|
while (s && *s)
|
|
{
|
|
f = _tcschr (s, _T(';'));
|
|
|
|
if (f)
|
|
{
|
|
_tcsncpy (szPathBuffer, s, (size_t)(f-s));
|
|
szPathBuffer[f-s] = _T('\0');
|
|
s = f + 1;
|
|
}
|
|
else
|
|
{
|
|
_tcscpy (szPathBuffer, s);
|
|
s = NULL;
|
|
}
|
|
|
|
len = _tcslen(szPathBuffer);
|
|
if (szPathBuffer[len - 1] != _T('\\'))
|
|
{
|
|
szPathBuffer[len] = _T('\\');
|
|
szPathBuffer[len + 1] = _T('\0');
|
|
}
|
|
_tcscat (szPathBuffer, pFileName);
|
|
|
|
#ifdef _DEBUG
|
|
DebugPrintf (_T("Testing: \'%s\'\n"), szPathBuffer);
|
|
#endif
|
|
if (IsValidFileName (szPathBuffer))
|
|
{
|
|
#ifdef _DEBUG
|
|
DebugPrintf (_T("Found: \'%s\'\n"), szPathBuffer);
|
|
#endif
|
|
free (pszBuffer);
|
|
_tcscpy (pFullName, szPathBuffer);
|
|
return TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
free (pszBuffer);
|
|
|
|
return FALSE;
|
|
}
|