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cmd.exe: Expand for variables at last with tilda modifications.

This commit is contained in:
Jason Edmeades 2007-09-11 21:43:03 +01:00 committed by Alexandre Julliard
parent dc372175d4
commit b69241124e
4 changed files with 161 additions and 132 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
programs/cmd/batch.c
View File

@ -19,6 +19,9 @@
*/
#include "wcmd.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(cmd);
extern int echo_mode;
extern WCHAR quals[MAX_PATH], param1[MAX_PATH], param2[MAX_PATH];
@ -301,7 +304,7 @@ void WCMD_splitpath(const WCHAR* path, WCHAR* drv, WCHAR* dir, WCHAR* name, WCHA
* Hence search forwards until find an invalid modifier, and then
* backwards until find for variable or 0-9
*/
void WCMD_HandleTildaModifiers(WCHAR **start, WCHAR *forVariable) {
void WCMD_HandleTildaModifiers(WCHAR **start, WCHAR *forVariable, WCHAR *forValue, BOOL justFors) {
#define NUMMODIFIERS 11
static const WCHAR validmodifiers[NUMMODIFIERS] = {
@ -324,10 +327,10 @@ void WCMD_HandleTildaModifiers(WCHAR **start, WCHAR *forVariable) {
BOOL skipFileParsing = FALSE;
BOOL doneModifier = FALSE;
/* Search forwards until find invalid WCHARacter modifier */
/* Search forwards until find invalid character modifier */
while (!finished) {
/* Work on the previous WCHARacter */
/* Work on the previous character */
if (lastModifier != NULL) {
for (i=0; i<NUMMODIFIERS; i++) {
@ -355,27 +358,30 @@ void WCMD_HandleTildaModifiers(WCHAR **start, WCHAR *forVariable) {
}
}
/* Now make sure the position we stopped at is a valid parameter */
if (!(*lastModifier >= '0' || *lastModifier <= '9') &&
(forVariable != NULL) &&
(toupperW(*lastModifier) != toupperW(*forVariable))) {
while (lastModifier > firstModifier) {
WINE_TRACE("Looking backwards for parameter id: %s / %s\n",
wine_dbgstr_w(lastModifier), wine_dbgstr_w(forVariable));
/* Its not... Step backwards until it matches or we get to the start */
while (toupperW(*lastModifier) != toupperW(*forVariable) &&
lastModifier > firstModifier) {
if (!justFors && context && (*lastModifier >= '0' || *lastModifier <= '9')) {
/* Its a valid parameter identifier - OK */
break;
} else if (forVariable && *lastModifier == *(forVariable+1)) {
/* Its a valid parameter identifier - OK */
break;
} else {
lastModifier--;
}
if (lastModifier == firstModifier) return; /* Invalid syntax */
}
if (lastModifier == firstModifier) return; /* Invalid syntax */
/* Extract the parameter to play with */
if ((*lastModifier >= '0' && *lastModifier <= '9')) {
strcpyW(outputparam, WCMD_parameter (context -> command,
*lastModifier-'0' + context -> shift_count[*lastModifier-'0'], NULL));
} else {
/* FIXME: Retrieve 'for' variable %c\n", *lastModifier); */
/* Need to get 'for' loop variable into outputparam */
return;
strcpyW(outputparam, forValue);
}
/* So now, firstModifier points to beginning of modifiers, lastModifier

36
programs/cmd/builtins.c
View File

@ -992,40 +992,6 @@ void WCMD_part_execute(CMD_LIST **cmdList, WCHAR *firstcmd, WCHAR *variable,
return;
}
/*****************************************************************************
* WCMD_Execute
*
* Execute a command after substituting variable text for the supplied parameter
*/
void WCMD_execute (WCHAR *orig_cmd, WCHAR *param, WCHAR *subst, CMD_LIST **cmdList) {
WCHAR *new_cmd, *p, *s, *dup;
int size;
if (param) {
size = (strlenW (orig_cmd) + 1) * sizeof(WCHAR);
new_cmd = (WCHAR *) LocalAlloc (LMEM_FIXED | LMEM_ZEROINIT, size);
dup = s = WCMD_strdupW(orig_cmd);
while ((p = strstrW (s, param))) {
*p = '\0';
size += strlenW (subst) * sizeof(WCHAR);
new_cmd = (WCHAR *) LocalReAlloc ((HANDLE)new_cmd, size, 0);
strcatW (new_cmd, s);
strcatW (new_cmd, subst);
s = p + strlenW (param);
}
strcatW (new_cmd, s);
WCMD_process_command (new_cmd, cmdList);
free (dup);
LocalFree ((HANDLE)new_cmd);
} else {
WCMD_process_command (orig_cmd, cmdList);
}
}
/**************************************************************************
* WCMD_give_help
*
@ -1067,7 +1033,7 @@ void WCMD_goto (CMD_LIST **cmdList) {
WCHAR string[MAX_PATH];
/* Do not process any more parts of a processed multipart or multilines command */
*cmdList = NULL;
if (cmdList) *cmdList = NULL;
if (param1[0] == 0x00) {
WCMD_output (WCMD_LoadMessage(WCMD_NOARG));

3
programs/cmd/wcmd.h
View File

@ -65,7 +65,6 @@ void WCMD_pause (void);
void WCMD_pipe (CMD_LIST **command, WCHAR *var, WCHAR *val);
void WCMD_popd (void);
void WCMD_print_error (void);
void WCMD_process_command (WCHAR *command, CMD_LIST **cmdList);
void WCMD_pushd (WCHAR *);
int WCMD_read_console (WCHAR *string, int str_len);
void WCMD_remove_dir (WCHAR *command);
@ -92,7 +91,7 @@ WCHAR *WCMD_parameter (WCHAR *s, int n, WCHAR **where);
WCHAR *WCMD_strtrim_leading_spaces (WCHAR *string);
void WCMD_strtrim_trailing_spaces (WCHAR *string);
void WCMD_opt_s_strip_quotes(WCHAR *cmd);
void WCMD_HandleTildaModifiers(WCHAR **start, WCHAR *forVariable);
void WCMD_HandleTildaModifiers(WCHAR **start, WCHAR *forVariable, WCHAR *forValue, BOOL justFors);
BOOL WCMD_ask_confirm (WCHAR *message, BOOL showSureText, BOOL *optionAll);
void WCMD_splitpath(const WCHAR* path, WCHAR* drv, WCHAR* dir, WCHAR* name, WCHAR* ext);

220
programs/cmd/wcmdmain.c
View File

@ -95,7 +95,7 @@ static char *output_bufA = NULL;
#define MAX_WRITECONSOLE_SIZE 65535
BOOL unicodePipes = FALSE;
static WCHAR *WCMD_expand_envvar(WCHAR *start);
static WCHAR *WCMD_expand_envvar(WCHAR *start, WCHAR *forvar, WCHAR *forVal);
/*****************************************************************************
* Main entry point. This is a console application so we have a main() not a
@ -456,6 +456,87 @@ int wmain (int argc, WCHAR *argvW[])
return 0;
}
/*****************************************************************************
* Expand the command. Native expands lines from batch programs as they are
* read in and not again, except for 'for' variable substitution.
* eg. As evidence, "echo %1 && shift && echo %1" or "echo %%path%%"
*/
void handleExpansion(WCHAR *cmd, BOOL justFors, WCHAR *forVariable, WCHAR *forValue) {
/* For commands in a context (batch program): */
/* Expand environment variables in a batch file %{0-9} first */
/* including support for any ~ modifiers */
/* Additionally: */
/* Expand the DATE, TIME, CD, RANDOM and ERRORLEVEL special */
/* names allowing environment variable overrides */
/* NOTE: To support the %PATH:xxx% syntax, also perform */
/* manual expansion of environment variables here */
WCHAR *p = cmd;
WCHAR *s, *t;
int i;
while ((p = strchrW(p, '%'))) {
WINE_TRACE("Translate command:%s %d (at: %s)\n",
wine_dbgstr_w(cmd), justFors, wine_dbgstr_w(p));
i = *(p+1) - '0';
/* Don't touch %% unless its in Batch */
if (!justFors && *(p+1) == '%') {
if (context) {
s = WCMD_strdupW(p+1);
strcpyW (p, s);
free (s);
}
p+=1;
/* Replace %~ modifications if in batch program */
} else if (*(p+1) == '~') {
WCMD_HandleTildaModifiers(&p, forVariable, forValue, justFors);
p++;
/* Replace use of %0...%9 if in batch program*/
} else if (!justFors && context && (i >= 0) && (i <= 9)) {
s = WCMD_strdupW(p+2);
t = WCMD_parameter (context -> command, i + context -> shift_count[i], NULL);
strcpyW (p, t);
strcatW (p, s);
free (s);
/* Replace use of %* if in batch program*/
} else if (!justFors && context && *(p+1)=='*') {
WCHAR *startOfParms = NULL;
s = WCMD_strdupW(p+2);
t = WCMD_parameter (context -> command, 1, &startOfParms);
if (startOfParms != NULL) strcpyW (p, startOfParms);
else *p = 0x00;
strcatW (p, s);
free (s);
} else if (forVariable &&
(CompareString (LOCALE_USER_DEFAULT,
SORT_STRINGSORT,
p,
strlenW(forVariable),
forVariable, -1) == 2)) {
s = WCMD_strdupW(p + strlenW(forVariable));
strcpyW(p, forValue);
strcatW(p, s);
free(s);
} else if (!justFors) {
p = WCMD_expand_envvar(p, forVariable, forValue);
/* In a FOR loop, see if this is the variable to replace */
} else { /* Ignore %'s on second pass of batch program */
p++;
}
}
return;
}
/*****************************************************************************
* Process one command. If the command is EXIT this routine does not return.
@ -463,9 +544,11 @@ int wmain (int argc, WCHAR *argvW[])
*/
void WCMD_process_command (WCHAR *command, CMD_LIST **cmdList)
void WCMD_execute (WCHAR *command,
WCHAR *forVariable, WCHAR *forValue,
CMD_LIST **cmdList)
{
WCHAR *cmd, *p, *s, *t, *redir;
WCHAR *cmd, *p, *redir;
int status, i;
DWORD count, creationDisposition;
HANDLE h;
@ -480,81 +563,24 @@ void WCMD_process_command (WCHAR *command, CMD_LIST **cmdList)
STD_OUTPUT_HANDLE,
STD_ERROR_HANDLE};
WINE_TRACE("command on entry:%s (%p), with '%s'='%s'\n",
wine_dbgstr_w(command), cmdList,
wine_dbgstr_w(forVariable), wine_dbgstr_w(forValue));
/* Move copy of the command onto the heap so it can be expanded */
new_cmd = HeapAlloc( GetProcessHeap(), 0, MAXSTRING * sizeof(WCHAR));
strcpyW(new_cmd, command);
/* For commands in a context (batch program): */
/* Expand environment variables in a batch file %{0-9} first */
/* including support for any ~ modifiers */
/* Additionally: */
/* Expand the DATE, TIME, CD, RANDOM and ERRORLEVEL special */
/* names allowing environment variable overrides */
/* NOTE: To support the %PATH:xxx% syntax, also perform */
/* manual expansion of environment variables here */
p = new_cmd;
while ((p = strchrW(p, '%'))) {
i = *(p+1) - '0';
/* Don't touch %% */
if (*(p+1) == '%') {
p+=2;
/* Replace %~ modifications if in batch program */
} else if (context && *(p+1) == '~') {
WCMD_HandleTildaModifiers(&p, NULL);
p++;
/* Replace use of %0...%9 if in batch program*/
} else if (context && (i >= 0) && (i <= 9)) {
s = WCMD_strdupW(p+2);
t = WCMD_parameter (context -> command, i + context -> shift_count[i], NULL);
strcpyW (p, t);
strcatW (p, s);
free (s);
/* Replace use of %* if in batch program*/
} else if (context && *(p+1)=='*') {
WCHAR *startOfParms = NULL;
s = WCMD_strdupW(p+2);
t = WCMD_parameter (context -> command, 1, &startOfParms);
if (startOfParms != NULL) strcpyW (p, startOfParms);
else *p = 0x00;
strcatW (p, s);
free (s);
} else {
p = WCMD_expand_envvar(p);
}
}
/* Expand variables in command line mode only (batch mode will
be expanded as the line is read in, except for for loops) */
handleExpansion(new_cmd, (context != NULL), forVariable, forValue);
cmd = new_cmd;
/* In a batch program, unknown variables are replace by nothing */
/* so remove any remaining %var% */
if (context) {
p = cmd;
while ((p = strchrW(p, '%'))) {
if (*(p+1) == '%') {
p+=2;
} else {
s = strchrW(p+1, '%');
if (!s) {
*p=0x00;
} else {
t = WCMD_strdupW(s+1);
strcpyW(p, t);
free(t);
}
}
}
/* Show prompt before batch line IF echo is on and in batch program */
if (echo_mode && (cmd[0] != '@')) {
WCMD_show_prompt();
WCMD_output_asis ( cmd);
WCMD_output_asis ( newline);
}
/* Show prompt before batch line IF echo is on and in batch program */
if (context && echo_mode && (cmd[0] != '@')) {
WCMD_show_prompt();
WCMD_output_asis ( cmd);
WCMD_output_asis ( newline);
}
/*
@ -1533,7 +1559,7 @@ void WCMD_pipe (CMD_LIST **cmdEntry, WCHAR *var, WCHAR *val) {
*
* Expands environment variables, allowing for WCHARacter substitution
*/
static WCHAR *WCMD_expand_envvar(WCHAR *start) {
static WCHAR *WCMD_expand_envvar(WCHAR *start, WCHAR *forVar, WCHAR *forVal) {
WCHAR *endOfVar = NULL, *s;
WCHAR *colonpos = NULL;
WCHAR thisVar[MAXSTRING];
@ -1551,20 +1577,38 @@ static WCHAR *WCMD_expand_envvar(WCHAR *start) {
static const WCHAR CdP[] = {'%','C','D','%','\0'};
static const WCHAR Random[] = {'R','A','N','D','O','M','\0'};
static const WCHAR RandomP[] = {'%','R','A','N','D','O','M','%','\0'};
static const WCHAR Delims[] = {'%',' ',':','\0'};
WINE_TRACE("Expanding: %s (%s,%s)\n", wine_dbgstr_w(start),
wine_dbgstr_w(forVal), wine_dbgstr_w(forVar));
/* Find the end of the environment variable, and extract name */
endOfVar = strchrW(start+1, '%');
if (endOfVar == NULL) {
endOfVar = strpbrkW(start+1, Delims);
if (endOfVar == NULL || *endOfVar==' ') {
/* In batch program, missing terminator for % and no following
':' just removes the '%' */
s = WCMD_strdupW(start + 1);
strcpyW (start, s);
free(s);
if (context) {
s = WCMD_strdupW(start + 1);
strcpyW (start, s);
free(s);
return start;
} else {
/* FIXME: Some other special conditions here depending on whether
in batch, complex or not, and whether env var exists or not! */
return start;
/* In command processing, just ignore it - allows command line
syntax like: for %i in (a.a) do echo %i */
return start+1;
}
}
/* If ':' found, process remaining up until '%' (or stop at ':' if
a missing '%' */
if (*endOfVar==':') {
WCHAR *endOfVar2 = strchrW(endOfVar+1, '%');
if (endOfVar2 != NULL) endOfVar = endOfVar2;
}
memcpy(thisVar, start, ((endOfVar - start) + 1) * sizeof(WCHAR));
thisVar[(endOfVar - start)+1] = 0x00;
colonpos = strchrW(thisVar+1, ':');
@ -1627,6 +1671,16 @@ static WCHAR *WCMD_expand_envvar(WCHAR *start) {
wsprintf(thisVarContents, fmt, rand() % 32768);
len = strlenW(thisVarContents);
/* Look for a matching 'for' variable */
} else if (forVar &&
(CompareString (LOCALE_USER_DEFAULT,
SORT_STRINGSORT,
thisVar,
(colonpos - thisVar) - 1,
forVar, -1) == 2)) {
strcpyW(thisVarContents, forVal);
len = strlenW(thisVarContents);
} else {
len = ExpandEnvironmentStrings(thisVar, thisVarContents,
@ -1952,6 +2006,9 @@ WCHAR *WCMD_ReadAndParseLine(WCHAR *optionalcmd, CMD_LIST **output, HANDLE readF
WCMD_output_asis(newline);
}
/* Replace env vars if in a batch context */
if (context) handleExpansion(extraSpace, FALSE, NULL, NULL);
/* Start with an empty string */
curLen = 0;
@ -2234,6 +2291,7 @@ WCHAR *WCMD_ReadAndParseLine(WCHAR *optionalcmd, CMD_LIST **output, HANDLE readF
if (WCMD_fgets(extraSpace, MAXSTRING, readFrom) == NULL) break;
}
curPos = extraSpace;
if (context) handleExpansion(extraSpace, FALSE, NULL, NULL);
}
}