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[CMD] SETLOCAL / ENDLOCAL: Save / Restore as well the current drive and current directory.

Browse source 
That's an actual fact, done on original MS-DOS COMMAND.COM, FreeCOM,
Windows' CMD.EXE, etc., but is strangely undocumented on MSDN documentation.

See https://www.dostips.com/forum/viewtopic.php?t=4436

Fixes some cmd_winetests.
This commit is contained in:
Hermès Bélusca-Maïto 2020-07-18 23:35:56 +02:00
parent e8e31267c5
commit 1cb7e08522
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GPG key ID: 3B2539C65E7B93D0
1 changed files with 33 additions and 2 deletions
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35
base/shell/cmd/setlocal.c
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@ -9,10 +9,13 @@
#include "precomp.h"
#include <direct.h> // For _getdrive().
typedef struct _SETLOCAL
{
struct _SETLOCAL *Prev;
LPTSTR Environment;
INT CurDrive;
BOOL EnableExtensions;
BOOL DelayedExpansion;
} SETLOCAL, *PSETLOCAL;
@ -42,6 +45,13 @@ INT cmd_setlocal(LPTSTR param)
LPTSTR* arg;
INT argc, i;
if (!_tcscmp(param, _T("/?")))
{
// FIXME
ConOutPuts(_T("SETLOCAL help not implemented yet!\n"));
return 0;
}
/* SETLOCAL only works inside a batch context */
if (!bc)
return 0;
@ -53,6 +63,7 @@ INT cmd_setlocal(LPTSTR param)
error_out_of_memory();
return 1;
}
Saved->Environment = DuplicateEnvironment();
if (!Saved->Environment)
{
@ -60,6 +71,12 @@ INT cmd_setlocal(LPTSTR param)
cmd_free(Saved);
return 1;
}
/*
* Save the current drive; the duplicated environment
* contains the corresponding current directory.
*/
Saved->CurDrive = _getdrive();
Saved->EnableExtensions = bEnableExtensions;
Saved->DelayedExpansion = bDelayedExpansion;
@ -94,9 +111,15 @@ INT cmd_endlocal(LPTSTR param)
{
LPTSTR Environ, Name, Value;
PSETLOCAL Saved;
TCHAR drvEnvVar[] = _T("=?:");
TCHAR szCurrent[MAX_PATH];
/* ENDLOCAL doesn't take any params */
UNREFERENCED_PARAMETER(param);
if (!_tcscmp(param, _T("/?")))
{
// FIXME
ConOutPuts(_T("ENDLOCAL help not implemented yet!\n"));
return 0;
}
/* Pop a SETLOCAL struct off of this batch context's stack */
if (!bc || !(Saved = bc->setlocal))
@ -133,6 +156,14 @@ INT cmd_endlocal(LPTSTR param)
Name = Value;
}
/* Restore the current drive and its current directory from the environment */
drvEnvVar[1] = _T('A') + Saved->CurDrive - 1;
if (!GetEnvironmentVariable(drvEnvVar, szCurrent, ARRAYSIZE(szCurrent)))
{
_stprintf(szCurrent, _T("%C:\\"), _T('A') + Saved->CurDrive - 1);
}
_tchdir(szCurrent); // SetRootPath(NULL, szCurrent);
cmd_free(Saved->Environment);
cmd_free(Saved);
return 0;