#include <precomp.h>
+static INT GenericCmp(INT (*StringCmp)(LPCTSTR, LPCTSTR),
+ LPCTSTR Left, LPCTSTR Right)
+{
+ TCHAR *end;
+ INT nLeft = _tcstol(Left, &end, 0);
+ if (*end == _T('\0'))
+ {
+ INT nRight = _tcstol(Right, &end, 0);
+ if (*end == _T('\0'))
+ {
+ /* both arguments are numeric */
+ return (nLeft < nRight) ? -1 : (nLeft > nRight);
+ }
+ }
+ return StringCmp(Left, Right);
+}
-#define X_EXEC 1
-#define X_EMPTY 0x80
-
-INT cmd_if (LPTSTR param)
+BOOL ExecuteIf(PARSED_COMMAND *Cmd)
{
- INT x_flag = 0; /* when set cause 'then' clause to be executed */
- LPTSTR pp;
+ INT result = FALSE; /* when set cause 'then' clause to be executed */
+ LPTSTR param;
+#if 0
+ /* FIXME: need to handle IF /?; will require special parsing */
TRACE ("cmd_if: (\'%s\')\n", debugstr_aw(param));
if (!_tcsncmp (param, _T("/?"), 2))
ConOutResPaging(TRUE,STRING_IF_HELP1);
return 0;
}
+#endif
- /* First check if param string begins with 'not' */
- if (!_tcsnicmp (param, _T("not"), 3) && _istspace (*(param + 3)))
+ if (Cmd->If.Operator == IF_CMDEXTVERSION)
{
- x_flag = X_EXEC; /* Remember 'NOT' */
- param += 3; /* Step over 'NOT' */
- while (_istspace (*param)) /* And subsequent spaces */
- param++;
- }
-
- /* Check for 'exist' form */
- if (!_tcsnicmp (param, _T("exist"), 5) && _istspace (*(param + 5)))
- {
- UINT i;
- BOOL bInside = FALSE;
-
- param += 5;
- while (_istspace (*param))
- param++;
-
- pp = param;
-
- /* find the whole path to the file */
- for(i = 0; i < _tcslen(param); i++)
+ /* IF CMDEXTVERSION n: check if Command Extensions version
+ * is greater or equal to n */
+ DWORD n = _tcstoul(Cmd->If.RightArg, ¶m, 10);
+ if (*param != _T('\0'))
{
- if(param[i] == _T('\"'))
- bInside = !bInside;
- if((param[i] == _T(' ')) && !bInside)
- {
- break;
- }
- pp++;
- }
- *pp++ = _T('\0');
- i = 0;
- /* remove quotes */
- while(i < _tcslen(param))
- {
- if(param[i] == _T('\"'))
- memmove(¶m[i],¶m[i + 1], _tcslen(¶m[i]) * sizeof(TCHAR));
- else
- i++;
- }
-
- if (*pp)
- {
- WIN32_FIND_DATA f;
- HANDLE hFind;
-
- hFind = FindFirstFile (param, &f);
- x_flag ^= (hFind == INVALID_HANDLE_VALUE) ? 0 : X_EXEC;
- if (hFind != INVALID_HANDLE_VALUE)
- {
- FindClose (hFind);
- }
+ error_syntax(Cmd->If.RightArg);
+ return FALSE;
}
- else
- return 0;
+ result = (2 >= n);
}
- else if (!_tcsnicmp (param, _T("defined"), 7) && _istspace (*(param + 7)))
+ else if (Cmd->If.Operator == IF_DEFINED)
{
- /* Check for 'defined' form */
- TCHAR Value [1];
- INT ValueSize = 0;
-
- param += 7;
- /* IF [NOT] DEFINED var COMMAND */
- /* ^ */
- while (_istspace (*param))
- param++;
- /* IF [NOT] DEFINED var COMMAND */
- /* ^ */
- pp = param;
- while (*pp && !_istspace (*pp))
- pp++;
- /* IF [NOT] DEFINED var COMMAND */
- /* ^ */
- if (*pp)
+ /* IF DEFINED var: check if environment variable exists */
+ result = (GetEnvVarOrSpecial(Cmd->If.RightArg) != NULL);
+ }
+ else if (Cmd->If.Operator == IF_ERRORLEVEL)
+ {
+ /* IF ERRORLEVEL n: check if last exit code is greater or equal to n */
+ INT n = _tcstol(Cmd->If.RightArg, ¶m, 10);
+ if (*param != _T('\0'))
{
- *pp++ = _T('\0');
- ValueSize = GetEnvironmentVariable(param, Value, sizeof(Value) / sizeof(Value[0]));
- x_flag ^= (0 == ValueSize)
- ? 0
- : X_EXEC;
- x_flag |= X_EMPTY;
+ error_syntax(Cmd->If.RightArg);
+ return FALSE;
}
- else
- return 0;
+ result = (nErrorLevel >= n);
}
- else if (!_tcsnicmp (param, _T("errorlevel"), 10) && _istspace (*(param + 10)))
+ else if (Cmd->If.Operator == IF_EXIST)
{
- /* Check for 'errorlevel' form */
- INT n = 0;
-
- pp = param + 10;
- while (_istspace (*pp))
- pp++;
+ /* IF EXIST filename: check if file exists (wildcards allowed) */
+ WIN32_FIND_DATA f;
+ HANDLE hFind;
- while (_istdigit (*pp))
- n = n * 10 + (*pp++ - _T('0'));
+ StripQuotes(Cmd->If.RightArg);
- x_flag ^= (nErrorLevel != n) ? 0 : X_EXEC;
-
- x_flag |= X_EMPTY; /* Syntax error if comd empty */
+ hFind = FindFirstFile(Cmd->If.RightArg, &f);
+ if (hFind != INVALID_HANDLE_VALUE)
+ {
+ result = TRUE;
+ FindClose(hFind);
+ }
}
else
{
- BOOL bInQuote = FALSE;
- INT p1len;
- pp = param;
- while ( *pp && ( bInQuote || *pp != _T('=') ) )
- {
- if ( *pp == _T('\"') )
- bInQuote = !bInQuote;
- ++pp;
- }
- p1len = pp-param;
- /* check for "==" */
- if ( *pp++ != _T('=') || *pp++ != _T('=') )
- {
- error_syntax ( NULL );
- return 1;
- }
- while (_istspace (*pp)) /* Skip subsequent spaces */
- pp++;
-
- /* are the two sides equal*/
- if ( !_tcsncmp(param,pp,p1len))
- x_flag ^= X_EXEC;
- pp += p1len;
+ /* Do case-insensitive string comparisons if /I specified */
+ INT (*StringCmp)(LPCTSTR, LPCTSTR) =
+ (Cmd->If.Flags & IFFLAG_IGNORECASE) ? _tcsicmp : _tcscmp;
- if ( x_flag )
+ if (Cmd->If.Operator == IF_STRINGEQ)
{
- x_flag |= X_EMPTY;
+ /* IF str1 == str2 */
+ result = StringCmp(Cmd->If.LeftArg, Cmd->If.RightArg) == 0;
}
- }
-
- while (_istspace (*pp)) /* skip spaces */
- pp++;
-
- if (*pp == _T('('))
- {
- if (bc)
+ else
{
- pp++;
- bc->bCmdBlock++;
- if ((bc->bCmdBlock >= 0) && (bc->bCmdBlock < MAX_PATH))
- bc->bExecuteBlock[bc->bCmdBlock] = x_flag & X_EXEC;
- /* commands are in the next lines */
- if (*pp == _T('\0'))
- return 0;
+ result = GenericCmp(StringCmp, Cmd->If.LeftArg, Cmd->If.RightArg);
+ switch (Cmd->If.Operator)
+ {
+ case IF_EQU: result = (result == 0); break;
+ case IF_NEQ: result = (result != 0); break;
+ case IF_LSS: result = (result < 0); break;
+ case IF_LEQ: result = (result <= 0); break;
+ case IF_GTR: result = (result > 0); break;
+ case IF_GEQ: result = (result >= 0); break;
+ }
}
}
- if (x_flag & X_EMPTY)
+ if (result ^ ((Cmd->If.Flags & IFFLAG_NEGATE) != 0))
{
- while (_istspace (*pp)) /* Then skip spaces */
- pp++;
-
- if (*pp == _T('\0')) /* If nothing left then syntax err */
- {
- error_syntax (NULL);
- return 1;
- }
+ /* full condition was true, do the command */
+ return ExecuteCommand(Cmd->Subcommands);
}
-
- if (x_flag & X_EXEC)
+ else
{
- ParseCommandLine (pp);
+ /* full condition was false, do the "else" command if there is one */
+ if (Cmd->Subcommands->Next)
+ return ExecuteCommand(Cmd->Subcommands->Next);
+ return TRUE;
}
-
- return 0;
}
/* EOF */
projects / reactos.git / blobdiff