Sweden-Number/programs/cmd/batch.c

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1999-06-06 17:24:04 +02:00
/*
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* CMD - Wine-compatible command line interface - batch interface.
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*
* Copyright (C) 1999 D A Pickles
* Copyright (C) 2007 J Edmeades
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*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
#include "wcmd.h"
#include "wine/debug.h"
extern struct env_stack *saved_environment;
WINE_DEFAULT_DEBUG_CHANNEL(cmd);
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/****************************************************************************
* WCMD_batch
*
* Open and execute a batch file.
* On entry *command includes the complete command line beginning with the name
* of the batch file (if a CALL command was entered the CALL has been removed).
* *file is the name of the file, which might not exist and may not have the
* .BAT suffix on. Called is 1 for a CALL, 0 otherwise.
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*
* We need to handle recursion correctly, since one batch program might call another.
* So parameters for this batch file are held in a BATCH_CONTEXT structure.
*
* To support call within the same batch program, another input parameter is
* a label to goto once opened.
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*/
void WCMD_batch (WCHAR *file, WCHAR *command, BOOL called, WCHAR *startLabel, HANDLE pgmHandle)
{
HANDLE h = INVALID_HANDLE_VALUE;
BATCH_CONTEXT *prev_context;
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if (startLabel == NULL) {
h = CreateFileW (file, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (h == INVALID_HANDLE_VALUE) {
SetLastError (ERROR_FILE_NOT_FOUND);
WCMD_print_error ();
return;
}
} else {
DuplicateHandle(GetCurrentProcess(), pgmHandle,
GetCurrentProcess(), &h,
0, FALSE, DUPLICATE_SAME_ACCESS);
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}
/*
* Create a context structure for this batch file.
*/
prev_context = context;
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context = LocalAlloc (LMEM_FIXED, sizeof (BATCH_CONTEXT));
context -> h = h;
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context->batchfileW = heap_strdupW(file);
context -> command = command;
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memset(context -> shift_count, 0x00, sizeof(context -> shift_count));
context -> prev_context = prev_context;
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context -> skip_rest = FALSE;
/* If processing a call :label, 'goto' the label in question */
if (startLabel) {
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strcpyW(param1, startLabel);
WCMD_goto(NULL);
}
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/*
* Work through the file line by line. Specific batch commands are processed here,
* the rest are handled by the main command processor.
*/
while (context -> skip_rest == FALSE) {
CMD_LIST *toExecute = NULL; /* Commands left to be executed */
if (!WCMD_ReadAndParseLine(NULL, &toExecute, h))
break;
/* Note: although this batch program itself may be called, we are not retrying
the command as a result of a call failing to find a program, hence the
retryCall parameter below is FALSE */
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WCMD_process_commands(toExecute, FALSE, FALSE);
WCMD_free_commands(toExecute);
toExecute = NULL;
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}
CloseHandle (h);
/*
* If there are outstanding setlocal's to the current context, unwind them.
*/
while (saved_environment && saved_environment->batchhandle == context->h) {
WCMD_endlocal();
}
/*
* If invoked by a CALL, we return to the context of our caller. Otherwise return
* to the caller's caller.
*/
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heap_free(context->batchfileW);
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LocalFree (context);
if ((prev_context != NULL) && (!called)) {
WINE_TRACE("Batch completed, but was not 'called' so skipping outer batch too\n");
prev_context -> skip_rest = TRUE;
context = prev_context;
}
context = prev_context;
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}
/*******************************************************************
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* WCMD_parameter_with_delims
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*
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* Extracts a delimited parameter from an input string, providing
* the delimiters characters to use
*
* PARAMS
* s [I] input string, non NULL
* n [I] # of the parameter to return, counted from 0
* start [O] Optional. Pointer to the first char of param n in s
* raw [I] TRUE to return the parameter in raw format (quotes maintained)
* FALSE to return the parameter with quotes stripped (including internal ones)
* wholecmdline [I] TRUE to indicate this routine is being used to parse the
* command line, and special logic for arg0->1 transition
* needs to be applied.
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* delims[I] The delimiter characters to use
*
* RETURNS
* Success: The nth delimited parameter found in s
* if start != NULL, *start points to the start of the param (quotes maintained)
* Failure: An empty string if the param is not found.
* *start == NULL
*
* NOTES
* Return value is stored in static storage (i.e. overwritten after each call).
* By default, the parameter is returned with quotes removed, ready for use with
* other API calls, e.g. c:\"a b"\c is returned as c:\a b\c. However, some commands
* need to preserve the exact syntax (echo, for, etc) hence the raw option.
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*/
WCHAR *WCMD_parameter_with_delims (WCHAR *s, int n, WCHAR **start,
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BOOL raw, BOOL wholecmdline, const WCHAR *delims)
{
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int curParamNb = 0;
static WCHAR param[MAXSTRING];
WCHAR *p = s, *begin;
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if (start != NULL) *start = NULL;
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param[0] = '\0';
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while (TRUE) {
/* Absorb repeated word delimiters until we get to the next token (or the end!) */
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while (*p && (strchrW(delims, *p) != NULL))
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p++;
if (*p == '\0') return param;
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/* If we have reached the token number we want, remember the beginning of it */
if (start != NULL && curParamNb == n) *start = p;
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/* Return the whole word up to the next delimiter, handling quotes in the middle
of it, e.g. a"\b c\"d is a single parameter. */
begin = p;
/* Loop character by character, but just need to special case quotes */
while (*p) {
/* Once we have found a delimiter, break */
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if (strchrW(delims, *p) != NULL) break;
/* Very odd special case - Seems as if a ( acts as a delimiter which is
not swallowed but is effective only when it comes between the program
name and the parameters. Need to avoid this triggering when used
to walk parameters generally. */
if (wholecmdline && curParamNb == 0 && *p=='(') break;
/* If we find a quote, copy until we get the end quote */
if (*p == '"') {
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p++;
while (*p && *p != '"') p++;
}
/* Now skip the character / quote */
if (*p) p++;
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}
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if (curParamNb == n) {
/* Return the parameter in static storage either as-is (raw) or
suitable for use with other win32 api calls (quotes stripped) */
if (raw) {
memcpy(param, begin, (p - begin) * sizeof(WCHAR));
param[p-begin] = '\0';
} else {
int i=0;
while (begin < p) {
if (*begin != '"') param[i++] = *begin;
begin++;
}
param[i] = '\0';
}
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return param;
}
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curParamNb++;
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}
}
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/*******************************************************************
* WCMD_parameter
*
* Extracts a delimited parameter from an input string, using a
* default set of delimiter characters. For parameters, see the main
* function above.
*/
WCHAR *WCMD_parameter (WCHAR *s, int n, WCHAR **start, BOOL raw,
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BOOL wholecmdline)
{
static const WCHAR defaultDelims[] = { ' ', '\t', ',', '=', ';', '\0' };
return WCMD_parameter_with_delims (s, n, start, raw, wholecmdline, defaultDelims);
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}
/****************************************************************************
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* WCMD_fgets
*
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* Gets one line from a file/console and puts it into buffer buf
* Pre: buf has size noChars
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* 1 <= noChars <= MAXSTRING
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* Post: buf is filled with at most noChars-1 characters, and gets nul-terminated
buf does not include EOL terminator
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* Returns:
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* buf on success
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* NULL on error or EOF
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*/
WCHAR *WCMD_fgets(WCHAR *buf, DWORD noChars, HANDLE h)
{
DWORD charsRead;
BOOL status;
DWORD i;
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/* We can't use the native f* functions because of the filename syntax differences
between DOS and Unix. Also need to lose the LF (or CRLF) from the line. */
if (!WCMD_is_console_handle(h)) {
LARGE_INTEGER filepos;
char *bufA;
UINT cp;
const char *p;
cp = GetConsoleCP();
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bufA = heap_alloc(noChars);
/* Save current file position */
filepos.QuadPart = 0;
SetFilePointerEx(h, filepos, &filepos, FILE_CURRENT);
status = ReadFile(h, bufA, noChars, &charsRead, NULL);
if (!status || charsRead == 0) {
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heap_free(bufA);
return NULL;
}
/* Find first EOL */
for (p = bufA; p < (bufA + charsRead); p = CharNextExA(cp, p, 0)) {
if (*p == '\n' || *p == '\r')
break;
}
/* Sets file pointer to the start of the next line, if any */
filepos.QuadPart += p - bufA + 1 + (*p == '\r' ? 1 : 0);
SetFilePointerEx(h, filepos, NULL, FILE_BEGIN);
i = MultiByteToWideChar(cp, 0, bufA, p - bufA, buf, noChars);
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heap_free(bufA);
}
else {
status = WCMD_ReadFile(h, buf, noChars, &charsRead);
if (!status || charsRead == 0) return NULL;
/* Find first EOL */
for (i = 0; i < charsRead; i++) {
if (buf[i] == '\n' || buf[i] == '\r')
break;
}
}
/* Truncate at EOL (or end of buffer) */
if (i == noChars)
i--;
buf[i] = '\0';
return buf;
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}
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/* WCMD_splitpath - copied from winefile as no obvious way to use it otherwise */
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void WCMD_splitpath(const WCHAR* path, WCHAR* drv, WCHAR* dir, WCHAR* name, WCHAR* ext)
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{
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const WCHAR* end; /* end of processed string */
const WCHAR* p; /* search pointer */
const WCHAR* s; /* copy pointer */
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/* extract drive name */
if (path[0] && path[1]==':') {
if (drv) {
*drv++ = *path++;
*drv++ = *path++;
*drv = '\0';
}
} else if (drv)
*drv = '\0';
end = path + strlenW(path);
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/* search for begin of file extension */
for(p=end; p>path && *--p!='\\' && *p!='/'; )
if (*p == '.') {
end = p;
break;
}
if (ext)
for(s=end; (*ext=*s++); )
ext++;
/* search for end of directory name */
for(p=end; p>path; )
if (*--p=='\\' || *p=='/') {
p++;
break;
}
if (name) {
for(s=p; s<end; )
*name++ = *s++;
*name = '\0';
}
if (dir) {
for(s=path; s<p; )
*dir++ = *s++;
*dir = '\0';
}
}
/****************************************************************************
* WCMD_HandleTildaModifiers
*
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* Handle the ~ modifiers when expanding %0-9 or (%a-z/A-Z in for command)
* %~xxxxxV (V=0-9 or A-Z, a-z)
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* Where xxxx is any combination of:
* ~ - Removes quotes
* f - Fully qualified path (assumes current dir if not drive\dir)
* d - drive letter
* p - path
* n - filename
* x - file extension
* s - path with shortnames
* a - attributes
* t - date/time
* z - size
* $ENVVAR: - Searches ENVVAR for (contents of V) and expands to fully
* qualified path
*
* To work out the length of the modifier:
*
* Note: In the case of %0-9 knowing the end of the modifier is easy,
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* but in a for loop, the for end WCHARacter may also be a modifier
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* eg. for %a in (c:\a.a) do echo XXX
* where XXX = %~a (just ~)
* %~aa (~ and attributes)
* %~aaxa (~, attributes and extension)
* BUT %~aax (~ and attributes followed by 'x')
*
* Hence search forwards until find an invalid modifier, and then
* backwards until find for variable or 0-9
*/
void WCMD_HandleTildaModifiers(WCHAR **start, BOOL atExecute)
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{
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#define NUMMODIFIERS 11
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static const WCHAR validmodifiers[NUMMODIFIERS] = {
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'~', 'f', 'd', 'p', 'n', 'x', 's', 'a', 't', 'z', '$'
};
WIN32_FILE_ATTRIBUTE_DATA fileInfo;
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WCHAR outputparam[MAX_PATH];
WCHAR finaloutput[MAX_PATH];
WCHAR fullfilename[MAX_PATH];
WCHAR thisoutput[MAX_PATH];
WCHAR *pos = *start+1;
WCHAR *firstModifier = pos;
WCHAR *lastModifier = NULL;
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int modifierLen = 0;
BOOL finished = FALSE;
int i = 0;
BOOL exists = TRUE;
BOOL skipFileParsing = FALSE;
BOOL doneModifier = FALSE;
/* Search forwards until find invalid character modifier */
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while (!finished) {
/* Work on the previous character */
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if (lastModifier != NULL) {
for (i=0; i<NUMMODIFIERS; i++) {
if (validmodifiers[i] == *lastModifier) {
/* Special case '$' to skip until : found */
if (*lastModifier == '$') {
while (*pos != ':' && *pos) pos++;
if (*pos == 0x00) return; /* Invalid syntax */
pos++; /* Skip ':' */
}
break;
}
}
if (i==NUMMODIFIERS) {
finished = TRUE;
}
}
/* Save this one away */
if (!finished) {
lastModifier = pos;
pos++;
}
}
while (lastModifier > firstModifier) {
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WINE_TRACE("Looking backwards for parameter id: %s\n",
wine_dbgstr_w(lastModifier));
if (!atExecute && context && (*lastModifier >= '0' && *lastModifier <= '9')) {
/* Its a valid parameter identifier - OK */
break;
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} else {
int foridx = FOR_VAR_IDX(*lastModifier);
/* Its a valid parameter identifier - OK */
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if ((foridx >= 0) && (forloopcontext.variable[foridx] != NULL)) break;
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/* Its not a valid parameter identifier - step backwards */
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lastModifier--;
}
}
if (lastModifier == firstModifier) return; /* Invalid syntax */
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/* Extract the parameter to play with */
if (*lastModifier == '0') {
strcpyW(outputparam, context->batchfileW);
} else if ((*lastModifier >= '1' && *lastModifier <= '9')) {
strcpyW(outputparam,
WCMD_parameter (context -> command,
*lastModifier-'0' + context -> shift_count[*lastModifier-'0'],
NULL, FALSE, TRUE));
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} else {
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int foridx = FOR_VAR_IDX(*lastModifier);
strcpyW(outputparam, forloopcontext.variable[foridx]);
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}
/* So now, firstModifier points to beginning of modifiers, lastModifier
points to the variable just after the modifiers. Process modifiers
in a specific order, remembering there could be duplicates */
modifierLen = lastModifier - firstModifier;
finaloutput[0] = 0x00;
/* 1. Handle '~' : Strip surrounding quotes */
if (outputparam[0]=='"' &&
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memchrW(firstModifier, '~', modifierLen) != NULL) {
int len = strlenW(outputparam);
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if (outputparam[len-1] == '"') {
outputparam[len-1]=0x00;
len = len - 1;
}
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memmove(outputparam, &outputparam[1], (len * sizeof(WCHAR))-1);
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}
/* 2. Handle the special case of a $ */
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if (memchrW(firstModifier, '$', modifierLen) != NULL) {
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/* Special Case: Search envar specified in $[envvar] for outputparam
Note both $ and : are guaranteed otherwise check above would fail */
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WCHAR *begin = strchrW(firstModifier, '$') + 1;
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WCHAR *end = strchrW(firstModifier, ':');
WCHAR env[MAX_PATH];
DWORD size;
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/* Extract the env var */
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memcpy(env, begin, (end-begin) * sizeof(WCHAR));
env[(end-begin)] = 0x00;
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size = GetEnvironmentVariableW(env, NULL, 0);
if (size > 0) {
WCHAR *fullpath = heap_alloc(size * sizeof(WCHAR));
if (!fullpath || (GetEnvironmentVariableW(env, fullpath, size) == 0) ||
(SearchPathW(fullpath, outputparam, NULL, MAX_PATH, outputparam, NULL) == 0))
size = 0;
heap_free(fullpath);
}
if (!size) {
/* If env var not found, return empty string */
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finaloutput[0] = 0x00;
outputparam[0] = 0x00;
skipFileParsing = TRUE;
}
}
/* After this, we need full information on the file,
which is valid not to exist. */
if (!skipFileParsing) {
if (GetFullPathNameW(outputparam, MAX_PATH, fullfilename, NULL) == 0) {
exists = FALSE;
fullfilename[0] = 0x00;
} else {
exists = GetFileAttributesExW(fullfilename, GetFileExInfoStandard,
&fileInfo);
}
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/* 2. Handle 'a' : Output attributes (File doesn't have to exist) */
if (memchrW(firstModifier, 'a', modifierLen) != NULL) {
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WCHAR defaults[] = {'-','-','-','-','-','-','-','-','-','\0'};
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doneModifier = TRUE;
if (exists) {
strcpyW(thisoutput, defaults);
if (fileInfo.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
thisoutput[0]='d';
if (fileInfo.dwFileAttributes & FILE_ATTRIBUTE_READONLY)
thisoutput[1]='r';
if (fileInfo.dwFileAttributes & FILE_ATTRIBUTE_ARCHIVE)
thisoutput[2]='a';
if (fileInfo.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN)
thisoutput[3]='h';
if (fileInfo.dwFileAttributes & FILE_ATTRIBUTE_SYSTEM)
thisoutput[4]='s';
if (fileInfo.dwFileAttributes & FILE_ATTRIBUTE_COMPRESSED)
thisoutput[5]='c';
/* FIXME: What are 6 and 7? */
if (fileInfo.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)
thisoutput[8]='l';
strcatW(finaloutput, thisoutput);
}
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}
/* 3. Handle 't' : Date+time (File doesn't have to exist) */
if (memchrW(firstModifier, 't', modifierLen) != NULL) {
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SYSTEMTIME systime;
int datelen;
doneModifier = TRUE;
if (exists) {
if (finaloutput[0] != 0x00) strcatW(finaloutput, spaceW);
/* Format the time */
FileTimeToSystemTime(&fileInfo.ftLastWriteTime, &systime);
GetDateFormatW(LOCALE_USER_DEFAULT, DATE_SHORTDATE, &systime,
NULL, thisoutput, MAX_PATH);
strcatW(thisoutput, spaceW);
datelen = strlenW(thisoutput);
GetTimeFormatW(LOCALE_USER_DEFAULT, TIME_NOSECONDS, &systime,
NULL, (thisoutput+datelen), MAX_PATH-datelen);
strcatW(finaloutput, thisoutput);
}
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}
/* 4. Handle 'z' : File length (File doesn't have to exist) */
if (memchrW(firstModifier, 'z', modifierLen) != NULL) {
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/* FIXME: Output full 64 bit size (sprintf does not support I64 here) */
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ULONG/*64*/ fullsize = /*(fileInfo.nFileSizeHigh << 32) +*/
fileInfo.nFileSizeLow;
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static const WCHAR fmt[] = {'%','u','\0'};
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doneModifier = TRUE;
if (exists) {
if (finaloutput[0] != 0x00) strcatW(finaloutput, spaceW);
wsprintfW(thisoutput, fmt, fullsize);
strcatW(finaloutput, thisoutput);
}
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}
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/* 4. Handle 's' : Use short paths (File doesn't have to exist) */
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if (memchrW(firstModifier, 's', modifierLen) != NULL) {
if (finaloutput[0] != 0x00) strcatW(finaloutput, spaceW);
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/* Don't flag as doneModifier - %~s on its own is processed later */
GetShortPathNameW(outputparam, outputparam, sizeof(outputparam)/sizeof(outputparam[0]));
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}
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/* 5. Handle 'f' : Fully qualified path (File doesn't have to exist) */
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/* Note this overrides d,p,n,x */
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if (memchrW(firstModifier, 'f', modifierLen) != NULL) {
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doneModifier = TRUE;
if (finaloutput[0] != 0x00) strcatW(finaloutput, spaceW);
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strcatW(finaloutput, fullfilename);
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} else {
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WCHAR drive[10];
WCHAR dir[MAX_PATH];
WCHAR fname[MAX_PATH];
WCHAR ext[MAX_PATH];
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BOOL doneFileModifier = FALSE;
BOOL addSpace = (finaloutput[0] != 0x00);
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/* Split into components */
WCMD_splitpath(fullfilename, drive, dir, fname, ext);
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/* 5. Handle 'd' : Drive Letter */
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if (memchrW(firstModifier, 'd', modifierLen) != NULL) {
if (addSpace) {
strcatW(finaloutput, spaceW);
addSpace = FALSE;
}
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strcatW(finaloutput, drive);
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doneModifier = TRUE;
doneFileModifier = TRUE;
}
/* 6. Handle 'p' : Path */
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if (memchrW(firstModifier, 'p', modifierLen) != NULL) {
if (addSpace) {
strcatW(finaloutput, spaceW);
addSpace = FALSE;
}
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strcatW(finaloutput, dir);
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doneModifier = TRUE;
doneFileModifier = TRUE;
}
/* 7. Handle 'n' : Name */
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if (memchrW(firstModifier, 'n', modifierLen) != NULL) {
if (addSpace) {
strcatW(finaloutput, spaceW);
addSpace = FALSE;
}
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strcatW(finaloutput, fname);
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doneModifier = TRUE;
doneFileModifier = TRUE;
}
/* 8. Handle 'x' : Ext */
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if (memchrW(firstModifier, 'x', modifierLen) != NULL) {
if (addSpace) {
strcatW(finaloutput, spaceW);
addSpace = FALSE;
}
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strcatW(finaloutput, ext);
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doneModifier = TRUE;
doneFileModifier = TRUE;
}
/* If 's' but no other parameter, dump the whole thing */
if (!doneFileModifier &&
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memchrW(firstModifier, 's', modifierLen) != NULL) {
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doneModifier = TRUE;
if (finaloutput[0] != 0x00) strcatW(finaloutput, spaceW);
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strcatW(finaloutput, outputparam);
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}
}
}
/* If No other modifier processed, just add in parameter */
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if (!doneModifier) strcpyW(finaloutput, outputparam);
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/* Finish by inserting the replacement into the string */
WCMD_strsubstW(*start, lastModifier+1, finaloutput, -1);
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}
/*******************************************************************
* WCMD_call - processes a batch call statement
*
* If there is a leading ':', calls within this batch program
* otherwise launches another program.
*/
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void WCMD_call (WCHAR *command) {
/* Run other program if no leading ':' */
if (*command != ':') {
WCMD_run_program(command, TRUE);
/* If the thing we try to run does not exist, call returns 1 */
if (errorlevel) errorlevel=1;
} else {
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WCHAR gotoLabel[MAX_PATH];
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strcpyW(gotoLabel, param1);
if (context) {
LARGE_INTEGER li;
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FOR_CONTEXT oldcontext;
/* Save the for variable context, then start with an empty context
as for loop variables do not survive a call */
oldcontext = forloopcontext;
memset(&forloopcontext, 0, sizeof(forloopcontext));
/* Save the current file position, call the same file,
restore position */
li.QuadPart = 0;
li.u.LowPart = SetFilePointer(context -> h, li.u.LowPart,
&li.u.HighPart, FILE_CURRENT);
WCMD_batch (param1, command, TRUE, gotoLabel, context->h);
SetFilePointer(context -> h, li.u.LowPart,
&li.u.HighPart, FILE_BEGIN);
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/* Restore the for loop context */
forloopcontext = oldcontext;
} else {
WCMD_output_asis_stderr(WCMD_LoadMessage(WCMD_CALLINSCRIPT));
}
}
}