void execute_forking(char **subcmd) {
char *cmd = subcmd[0];
char **args = &subcmd[1];
if (strcmp(cmd, "echo") == 0) {
echo(args);
} else if ((strcmp(cmd, "etime") == 0) || (strcmp(cmd, "limits") == 0) ||
((strcmp(cmd, "&")) == 0)) {
execute_external(subcmd[1],&subcmd[1]);
} else {
execute_external(cmd, subcmd);
}
}
/*int execute_subcmd(char **subcmd){
int retval,redirection_type;
char *cmd = subcmd[0];
char **args = &subcmd[1];
//Handle Redirection here
redirection_type = check_redirection(args);
if( redirection_type == 3)
printf("Invalid Redirection operation\n");
else if(redirection_type == 0)
{//No Redirection
if (strcmp(cmd, "exit") == 0) {
retval = exit_shell();
} else if (strcmp(cmd, "cd") == 0) {
retval = cd(args[0]);
} else if (strcmp(cmd, "echo") == 0) {
retval = echo(args);
} else if (strcmp(cmd, "etime") == 0) {
retval = etime(args);
} else if (strcmp(cmd, "limits") == 0) {
retval = limits(args);
} else {
retval = execute_external(cmd, subcmd);
}
}
else
handle_redirection(subcmd,redirection_type);
return retval;
}*/
int execute_subcmd(char **subcmd) {
int retval;
if ((retval = execute_non_forking(subcmd)) == 2) {
execute_external(subcmd[0], subcmd);
}
return retval;
}
BOOL parse_cmd(char *cmd)
{
unsigned int i, rc;
int Argc; // argument count
#define MAXARGS 32
char *Argv[MAXARGS]; // argument pointers
char *pszTemp;
if (strlen(cmd)==0)
{
return FALSE;
}
if (strlen(cmd)==2)
if (cmd[1]==':')
{
if (QueryDriveReady(cmd[0]-'a'+1))
DosSetDefaultDisk(cmd[0]-'a'+1);
return FALSE;
}
while (( *cmd == ' ' ) || ( *cmd == '\t' ))
cmd++;
// loop through arguments
for ( Argc = 0; (( Argc < MAXARGS ) && ( *cmd )); Argc++ ) {
pszTemp = cmd; // save start of argument
while ( isdelim( *cmd ) == 0 ) {
if ( *cmd )
cmd++;
}
// check flag for terminators
if (Argc == 0) { // '\0' after program name only
if (( *cmd != '\0' ))
*cmd++ = '\0';
}
// update the Argv pointer
Argv[ Argc ] = pszTemp;
log("Argv[%d]=%s\n", Argc, pszTemp);
// skip delimiters for Argv[2] onwards
while (( *cmd ) && ( isdelim( *cmd )))
cmd++;
}
while (*cmd && isdelim(*cmd))
cmd--;
// change the first trailing delimiter to '\0'
cmd++;
*cmd = '\0'; /* second NULL terminator */
Argv[Argc] = NULL;
log("Argv[%d]=%s\n", Argc, 0);
if (!strcmp(Argv[0], "exit"))
{
return TRUE;
}
for (i = 0; commands[i]; i ++)
{
if (!strcmp(Argv[0], commands[i]->cmdname))
{
(*(commands[i]->func))(Argc, Argv);
return FALSE;
}
}
//log("argc=%d\n", Argc);
//for (i = 0; i < Argc; i++)
// log("argv[%d]=%s\n", i, Argv[i]);
execute_external(Argc, Argv);
return FALSE;
}
