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https://github.com/reactos/reactos.git
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149 lines
3.5 KiB
C
149 lines
3.5 KiB
C
/*
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* FOR.C - for internal batch command.
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*
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*
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* History:
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*
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* 16-Jul-1998 (Hans B Pufal)
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* Started.
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*
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* 16-Jul-1998 (John P Price)
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* Seperated commands into individual files.
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*
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* 19-Jul-1998 (Hans B Pufal)
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* Implementation of FOR.
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*
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* 27-Jul-1998 (John P Price <linux-guru@gcfl.net>)
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* Added config.h include.
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*
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* 20-Jan-1999 (Eric Kohl)
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* Unicode and redirection safe!
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*
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* 01-Sep-1999 (Eric Kohl)
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* Added help text.
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*/
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#include "config.h"
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#include <windows.h>
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#include <tchar.h>
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#include <string.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include "cmd.h"
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#include "batch.h"
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/*
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* Perform FOR command.
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*
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* First check syntax is correct : FOR %v IN ( <list> ) DO <command>
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* v must be alphabetic, <command> must not be empty.
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*
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* If all is correct build a new bcontext structure which preserves
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* the necessary information so that readbatchline can expand
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* each the command prototype for each list element.
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*
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* You might look on a FOR as being a called batch file with one line
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* per list element.
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*/
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INT cmd_for (LPTSTR cmd, LPTSTR param)
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{
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LPBATCH_CONTEXT lpNew;
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LPTSTR pp;
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TCHAR var;
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#ifdef _DEBUG
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DebugPrintf ("cmd_for (\'%s\', \'%s\'\n", cmd, param);
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#endif
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if (!_tcsncmp (param, _T("/?"), 2))
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{
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ConOutPuts (_T("Runs a specified command for each file in a set of files\n"
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"\n"
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"FOR %variable IN (set) DO command [parameters]\n"
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"\n"
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" %variable Specifies a replaceable parameter.\n"
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" (set) Specifies a set of one or more files. Wildcards may be used.\n"
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" command Specifies the command to carry out for each file.\n"
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" parameters Specifies parameters or switches for the specified command.\n"
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"\n"
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"To user the FOR comamnd in a batch program, specify %%variable instead of\n"
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"%variable."));
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return 0;
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}
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/* Check that first element is % then an alpha char followed by space */
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if ((*param != _T('%')) || !_istalpha (*(param + 1)) || !_istspace (*(param + 2)))
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{
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error_syntax (_T("bad variable specification."));
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return 1;
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}
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param++;
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var = *param++; /* Save FOR var name */
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while (_istspace (*param))
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param++;
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/* Check next element is 'IN' */
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if ((_tcsnicmp (param, _T("in"), 2) != 0) || !_istspace (*(param + 2)))
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{
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error_syntax (_T("'in' missing in for statement."));
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return 1;
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}
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param += 2;
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while (_istspace (*param))
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param++;
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/* Folowed by a '(', find also matching ')' */
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if ((*param != _T('(')) || (NULL == (pp = _tcsrchr (param, _T(')')))))
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{
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error_syntax (_T("no brackets found."));
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return 1;
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}
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*pp++ = _T('\0');
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param++; /* param now points at null terminated list */
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while (_istspace (*pp))
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pp++;
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/* Check DO follows */
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if ((_tcsnicmp (pp, _T("do"), 2) != 0) || !_istspace (*(pp + 2)))
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{
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error_syntax (_T("'do' missing."));
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return 1;
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}
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pp += 2;
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while (_istspace (*pp))
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pp++;
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/* Check that command tail is not empty */
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if (*pp == _T('\0'))
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{
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error_syntax (_T("no command after 'do'."));
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return 1;
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}
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/* OK all is correct, build a bcontext.... */
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lpNew = (LPBATCH_CONTEXT)malloc (sizeof (BATCH_CONTEXT));
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lpNew->prev = bc;
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bc = lpNew;
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bc->hBatchFile = INVALID_HANDLE_VALUE;
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bc->ffind = NULL;
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bc->params = BatchParams (_T(""), param); /* Split out list */
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bc->shiftlevel = 0;
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bc->forvar = var;
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bc->forproto = _tcsdup (pp);
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return 0;
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}
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/* EOF */ |