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cmd.exe: Add support for call :label and goto :label.

This commit is contained in:
Jason Edmeades 2007-02-23 22:19:25 +00:00 committed by Alexandre Julliard
parent 365f86fd7e
commit 327d7ef9e6
4 changed files with 82 additions and 25 deletions
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86
programs/cmd/batch.c
View File

@ -42,9 +42,12 @@ extern DWORD errorlevel;
*
* 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.
*/
void WCMD_batch (char *file, char *command, int called) {
void WCMD_batch (char *file, char *command, int called, char *startLabel, HANDLE pgmHandle) {
#define WCMD_BATCH_EXT_SIZE 5
@ -55,27 +58,33 @@ char extension_exe[WCMD_BATCH_EXT_SIZE] = ".exe";
unsigned int i;
BATCH_CONTEXT *prev_context;
for(i=0; (i<(sizeof(extension_batch)/WCMD_BATCH_EXT_SIZE)) &&
(h == INVALID_HANDLE_VALUE); i++) {
strcpy (string, file);
CharLower (string);
if (strstr (string, extension_batch[i]) == NULL) strcat (string, extension_batch[i]);
h = CreateFile (string, GENERIC_READ, FILE_SHARE_READ,
NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
}
if (h == INVALID_HANDLE_VALUE) {
if (startLabel == NULL) {
for(i=0; (i<(sizeof(extension_batch)/WCMD_BATCH_EXT_SIZE)) &&
(h == INVALID_HANDLE_VALUE); i++) {
strcpy (string, file);
CharLower (string);
if (strstr (string, extension_exe) == NULL) strcat (string, extension_exe);
if (strstr (string, extension_batch[i]) == NULL) strcat (string, extension_batch[i]);
h = CreateFile (string, GENERIC_READ, FILE_SHARE_READ,
NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (h != INVALID_HANDLE_VALUE) {
WCMD_run_program (command, 0);
} else {
SetLastError (ERROR_FILE_NOT_FOUND);
WCMD_print_error ();
}
return;
if (h == INVALID_HANDLE_VALUE) {
strcpy (string, file);
CharLower (string);
if (strstr (string, extension_exe) == NULL) strcat (string, extension_exe);
h = CreateFile (string, GENERIC_READ, FILE_SHARE_READ,
NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (h != INVALID_HANDLE_VALUE) {
WCMD_run_program (command, 0);
} else {
SetLastError (ERROR_FILE_NOT_FOUND);
WCMD_print_error ();
}
return;
}
} else {
DuplicateHandle(GetCurrentProcess(), pgmHandle,
GetCurrentProcess(), &h,
0, FALSE, DUPLICATE_SAME_ACCESS);
}
/*
@ -90,6 +99,12 @@ BATCH_CONTEXT *prev_context;
context -> prev_context = prev_context;
context -> skip_rest = FALSE;
/* If processing a call :label, 'goto' the label in question */
if (startLabel) {
strcpy(param1, startLabel);
WCMD_goto();
}
/*
* Work through the file line by line. Specific batch commands are processed here,
* the rest are handled by the main command processor.
@ -695,3 +710,40 @@ void WCMD_HandleTildaModifiers(char **start, char *forVariable) {
strcat(*start, pos);
free(pos);
}
/*******************************************************************
* WCMD_call - processes a batch call statement
*
* If there is a leading ':', calls within this batch program
* otherwise launches another program.
*/
void WCMD_call (char *command) {
/* Run other program if no leading ':' */
if (*command != ':') {
WCMD_run_program(command, 1);
} else {
char gotoLabel[MAX_PATH];
strcpy(gotoLabel, param1);
if (context) {
LARGE_INTEGER li;
/* Save the current file position, call the same file,
restore position */
li.QuadPart = 0;
li.LowPart = SetFilePointer(context -> h, li.LowPart,
&li.HighPart, FILE_CURRENT);
WCMD_batch (param1, command, 1, gotoLabel, context->h);
SetFilePointer(context -> h, li.LowPart,
&li.HighPart, FILE_BEGIN);
} else {
printf("Cannot call batch label outside of a batch script\n");
}
}
}

6
programs/cmd/builtins.c
View File

@ -434,6 +434,7 @@ char string[MAX_PATH];
return;
}
if (context != NULL) {
char *paramStart = param1;
/* Handle special :EOF label */
if (lstrcmpi (":eof", param1) == 0) {
@ -441,9 +442,12 @@ char string[MAX_PATH];
return;
}
/* Support goto :label as well as goto label */
if (*paramStart == ':') paramStart++;
SetFilePointer (context -> h, 0, NULL, FILE_BEGIN);
while (WCMD_fgets (string, sizeof(string), context -> h)) {
if ((string[0] == ':') && (lstrcmpi (&string[1], param1) == 0)) return;
if ((string[0] == ':') && (lstrcmpi (&string[1], paramStart) == 0)) return;
}
WCMD_output ("Target to GOTO not found\n");
}

3
programs/cmd/wcmd.h
View File

@ -27,7 +27,8 @@
#include <stdio.h>
#include <ctype.h>
void WCMD_batch (char *, char *, int);
void WCMD_batch (char *, char *, int, char *, HANDLE);
void WCMD_call (char *command);
void WCMD_change_tty (void);
void WCMD_clear_screen (void);
void WCMD_copy (void);

12
programs/cmd/wcmdmain.c
View File

@ -265,7 +265,7 @@ int main (int argc, char *argv[])
if (h != INVALID_HANDLE_VALUE) {
CloseHandle (h);
#if 0
WCMD_batch_command (string);
WCMD_batch ((char *)"\\autoexec.bat", (char *)"\\autoexec.bat", 0, NULL, INVALID_HANDLE_VALUE);
#endif
}
@ -422,7 +422,7 @@ void WCMD_process_command (char *command)
WCMD_setshow_attrib ();
break;
case WCMD_CALL:
WCMD_run_program (p, 1);
WCMD_call (p);
break;
case WCMD_CD:
case WCMD_CHDIR:
@ -628,14 +628,14 @@ char filetorun[MAX_PATH];
if (!ext || !strcasecmp( ext, ".bat"))
{
if (SearchPath (NULL, param1, ".bat", sizeof(filetorun), filetorun, NULL)) {
WCMD_batch (filetorun, command, called);
WCMD_batch (filetorun, command, called, NULL, INVALID_HANDLE_VALUE);
return;
}
}
if (!ext || !strcasecmp( ext, ".cmd"))
{
if (SearchPath (NULL, param1, ".cmd", sizeof(filetorun), filetorun, NULL)) {
WCMD_batch (filetorun, command, called);
WCMD_batch (filetorun, command, called, NULL, INVALID_HANDLE_VALUE);
return;
}
}
@ -644,7 +644,7 @@ char filetorun[MAX_PATH];
char *ext = strrchr( param1, '.' );
if (ext && (!strcasecmp( ext, ".bat" ) || !strcasecmp( ext, ".cmd" )))
{
WCMD_batch (param1, command, called);
WCMD_batch (param1, command, called, NULL, INVALID_HANDLE_VALUE);
return;
}
@ -657,7 +657,7 @@ char filetorun[MAX_PATH];
NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (h != INVALID_HANDLE_VALUE) {
CloseHandle (h);
WCMD_batch (param1, command, called);
WCMD_batch (param1, command, called, NULL, INVALID_HANDLE_VALUE);
return;
}
}