//handles all user input
userInput(){
//Clear input fields
command = NULL;
memset(&input,'\0',sizeof(input));
memset(&first,'\0',sizeof(first));
memset(&second,'\0',sizeof(second));
memset(&third,'\0',sizeof(third));
//Take input from user
printf("nsh3_WesJos$ ");
fgets(input,80,stdin);
commentfilter(input);//removes the text after a comment but not inside a complex string from a command.
//Split the input the user provides
splitInput(input);
//Make sure command or alias exists
if ((nshFind(alias,first) == NULL) && (nshFind(native,first) == NULL))
{
printf("\tCommand not found.\n");
userInput();
}
else
{
//Checks if alias or native command passed fail test
if (nshFind(alias,first) == NULL)
command = nshFind(native,first);
else
{
command = nshFind(alias,first);
handleAlias(command->value);
}
//Check command
if ((strcmp(command->value,"set")==0) || (strcmp(first,"set") == 0))
commandSet(&var,second,third);
if ((strcmp(command->value,"alias")==0) || (strcmp(first,"alias") == 0))
commandSet(&alias,second,third);
if ((strcmp(command->value,"tes") == 0) || (strcmp(first,"tes") == 0))
nshDelete(&var,second);
if ((strcmp(command->value,"saila") == 0) || (strcmp(first,"saila") == 0))
nshDelete(&alias,second);
if ((strcmp(command->value,"exit") == 0) || (strcmp(first,"exit") == 0))
cont = 0;
}
}
/* returns 'val' element, -1 on last item, POPT_ERROR_* on error */
int poptGetNextOpt(poptContext con) {
char * optString, * chptr, * localOptString;
char * longArg = NULL;
char * origOptString, *dup;
long aLong;
char * end;
const struct poptOption * opt = NULL;
int done = 0;
int i;
poptCallbackType cb;
void * cbData;
int singleDash;
dup = NULL;
while (!done) {
if (dup) {
g_free(dup);
dup = NULL;
}
while (!con->os->nextCharArg && con->os->next == con->os->argc
&& con->os > con->optionStack)
con->os--;
if (!con->os->nextCharArg && con->os->next == con->os->argc) {
invokeCallbacks(con, con->options, 1);
if (con->doExec) execCommand(con);
return -1;
}
if (!con->os->nextCharArg) {
origOptString = con->os->argv[con->os->next++];
if (con->restLeftover || *origOptString != '-') {
con->leftovers[con->numLeftovers++] = origOptString;
if (con->flags & POPT_CONTEXT_POSIXMEHARDER)
con->restLeftover = 1;
continue;
}
/* Make a copy we can hack at */
dup = localOptString = optString =
g_strdup(origOptString);
if (!optString[0]) {
g_free(dup);
return POPT_ERROR_BADOPT;
}
if (optString[1] == '-' && !optString[2]) {
con->restLeftover = 1;
continue;
} else {
optString++;
if (*optString == '-')
singleDash = 0, optString++;
else
singleDash = 1;
if (handleAlias(con, optString, '\0', NULL))
continue;
if (handleExec(con, optString, '\0'))
continue;
chptr = optString;
while (*chptr && *chptr != '=') chptr++;
if (*chptr == '=') {
longArg = origOptString + (chptr - localOptString) + 1;
*chptr = '\0';
}
opt = findOption(con->options, optString, '\0', &cb, &cbData,
singleDash);
if (!opt && !singleDash) {
g_free(dup);
return POPT_ERROR_BADOPT;
}
}
if (!opt)
con->os->nextCharArg = origOptString + 1;
}
if (con->os->nextCharArg) {
origOptString = con->os->nextCharArg;
con->os->nextCharArg = NULL;
if (handleAlias(con, NULL, *origOptString,
origOptString + 1)) {
origOptString++;
continue;
}
if (handleExec(con, NULL, *origOptString))
continue;
opt = findOption(con->options, NULL, *origOptString, &cb,
&cbData, 0);
if (!opt) {
g_free(dup);
return POPT_ERROR_BADOPT;
}
origOptString++;
if (*origOptString)
con->os->nextCharArg = origOptString;
}
if (opt->arg && (opt->argInfo & POPT_ARG_MASK) == POPT_ARG_NONE) {
*((int *)opt->arg) = 1;
} else if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_VAL) {
if (opt->arg) *((int *) opt->arg) = opt->val;
} else if ((opt->argInfo & POPT_ARG_MASK) != POPT_ARG_NONE) {
if (longArg) {
con->os->nextArg = longArg;
} else if (con->os->nextCharArg) {
con->os->nextArg = con->os->nextCharArg;
con->os->nextCharArg = NULL;
} else {
while (con->os->next == con->os->argc &&
con->os > con->optionStack)
con->os--;
if (con->os->next == con->os->argc) {
g_free(dup);
return POPT_ERROR_NOARG;
}
con->os->nextArg = con->os->argv[con->os->next++];
}
if (opt->arg) {
switch (opt->argInfo & POPT_ARG_MASK) {
case POPT_ARG_STRING:
*((char **) opt->arg) = con->os->nextArg;
break;
case POPT_ARG_INT:
case POPT_ARG_LONG:
aLong = strtol(con->os->nextArg, &end, 0);
if (!(end && *end == '\0')) {
g_free(dup);
return POPT_ERROR_BADNUMBER;
}
if (aLong == LONG_MIN || aLong == LONG_MAX) {
g_free(dup);
return POPT_ERROR_OVERFLOW;
}
if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_LONG) {
*((long *) opt->arg) = aLong;
} else {
if (aLong > INT_MAX || aLong < INT_MIN) {
g_free(dup);
return POPT_ERROR_OVERFLOW;
}
*((int *) opt->arg) =aLong;
}
break;
default:
fprintf(stdout, POPT_("option type (%d) not implemented in popt\n"),
opt->argInfo & POPT_ARG_MASK);
exit(1);
}
}
}
if (cb)
cb(con, POPT_CALLBACK_REASON_OPTION, opt, con->os->nextArg, cbData);
else if (opt->val && ((opt->argInfo & POPT_ARG_MASK) != POPT_ARG_VAL))
done = 1;
if ((con->finalArgvCount + 2) >= (con->finalArgvAlloced)) {
con->finalArgvAlloced += 10;
con->finalArgv = realloc(con->finalArgv,
sizeof(*con->finalArgv) * con->finalArgvAlloced);
}
i = con->finalArgvCount++;
con->finalArgv[i] =
malloc((opt->longName ? strlen(opt->longName) : 0) + 3);
if (opt->longName)
sprintf(con->finalArgv[i], "--%s", opt->longName);
else
sprintf(con->finalArgv[i], "-%c", opt->shortName);
if (opt->arg && (opt->argInfo & POPT_ARG_MASK) != POPT_ARG_NONE
&& (opt->argInfo & POPT_ARG_MASK) != POPT_ARG_VAL)
con->finalArgv[con->finalArgvCount++] =
strcpy(malloc(strlen(con->os->nextArg)+1), con->os->nextArg);
}
if (dup) g_free(dup);
return opt->val;
}
/* returns 'val' element, -1 on last item, POPT_ERROR_* on error */
int poptGetNextOpt(poptContext con)
{
const struct poptOption * opt = NULL;
int done = 0;
if (con == NULL)
return -1;
while (!done) {
const char * origOptString = NULL;
poptCallbackType cb = NULL;
const void * cbData = NULL;
const char * longArg = NULL;
int canstrip = 0;
int shorty = 0;
while (!con->os->nextCharArg && con->os->next == con->os->argc
&& con->os > con->optionStack) {
cleanOSE(con->os--);
}
if (!con->os->nextCharArg && con->os->next == con->os->argc) {
/*@-internalglobs@*/
invokeCallbacksPOST(con, con->options);
/*@=internalglobs@*/
if (con->doExec) return execCommand(con);
return -1;
}
/* Process next long option */
if (!con->os->nextCharArg) {
char * localOptString, * optString;
int thisopt;
/*@-sizeoftype@*/
if (con->os->argb && PBM_ISSET(con->os->next, con->os->argb)) {
con->os->next++;
continue;
}
/*@=sizeoftype@*/
thisopt = con->os->next;
if (con->os->argv != NULL) /* XXX can't happen */
origOptString = con->os->argv[con->os->next++];
if (origOptString == NULL) /* XXX can't happen */
return POPT_ERROR_BADOPT;
if (con->restLeftover || *origOptString != '-') {
if (con->flags & POPT_CONTEXT_POSIXMEHARDER)
con->restLeftover = 1;
if (con->flags & POPT_CONTEXT_ARG_OPTS) {
con->os->nextArg = xstrdup(origOptString);
return 0;
}
if (con->leftovers != NULL) /* XXX can't happen */
con->leftovers[con->numLeftovers++] = origOptString;
continue;
}
/* Make a copy we can hack at */
localOptString = optString =
strcpy((char *)alloca(strlen(origOptString) + 1),
origOptString);
if (optString[0] == '\0')
return POPT_ERROR_BADOPT;
if (optString[1] == '-' && !optString[2]) {
con->restLeftover = 1;
continue;
} else {
char *oe;
int singleDash;
optString++;
if (*optString == '-')
singleDash = 0, optString++;
else
singleDash = 1;
/* XXX aliases with arg substitution need "--alias=arg" */
if (handleAlias(con, optString, '\0', NULL))
continue;
if (handleExec(con, optString, '\0'))
continue;
/* Check for "--long=arg" option. */
for (oe = optString; *oe && *oe != '='; oe++)
{};
if (*oe == '=') {
*oe++ = '\0';
/* XXX longArg is mapped back to persistent storage. */
longArg = origOptString + (oe - localOptString);
}
opt = findOption(con->options, optString, '\0', &cb, &cbData,
singleDash);
if (!opt && !singleDash)
return POPT_ERROR_BADOPT;
}
if (!opt) {
con->os->nextCharArg = origOptString + 1;
} else {
if (con->os == con->optionStack &&
opt->argInfo & POPT_ARGFLAG_STRIP)
{
canstrip = 1;
poptStripArg(con, thisopt);
}
shorty = 0;
}
}
/* Process next short option */
/*@-branchstate@*/ /* FIX: W2DO? */
if (con->os->nextCharArg) {
origOptString = con->os->nextCharArg;
con->os->nextCharArg = NULL;
if (handleAlias(con, NULL, *origOptString, origOptString + 1))
continue;
if (handleExec(con, NULL, *origOptString)) {
/* Restore rest of short options for further processing */
origOptString++;
if (*origOptString != '\0')
con->os->nextCharArg = origOptString;
continue;
}
opt = findOption(con->options, NULL, *origOptString, &cb,
&cbData, 0);
if (!opt)
return POPT_ERROR_BADOPT;
shorty = 1;
origOptString++;
if (*origOptString != '\0')
con->os->nextCharArg = origOptString;
}
/*@=branchstate@*/
if (opt == NULL) return POPT_ERROR_BADOPT; /* XXX can't happen */
if (opt->arg && (opt->argInfo & POPT_ARG_MASK) == POPT_ARG_NONE) {
if (poptSaveInt((int *)opt->arg, opt->argInfo, 1L))
return POPT_ERROR_BADOPERATION;
} else if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_VAL) {
if (opt->arg) {
if (poptSaveInt((int *)opt->arg, opt->argInfo, (long)opt->val))
return POPT_ERROR_BADOPERATION;
}
} else if ((opt->argInfo & POPT_ARG_MASK) != POPT_ARG_NONE) {
con->os->nextArg = (const char *)_free(con->os->nextArg);
/*@-usedef@*/ /* FIX: W2DO? */
if (longArg) {
/*@=usedef@*/
longArg = expandNextArg(con, longArg);
con->os->nextArg = longArg;
} else if (con->os->nextCharArg) {
longArg = expandNextArg(con, con->os->nextCharArg);
con->os->nextArg = longArg;
con->os->nextCharArg = NULL;
} else {
while (con->os->next == con->os->argc &&
con->os > con->optionStack) {
cleanOSE(con->os--);
}
if (con->os->next == con->os->argc) {
if (!(opt->argInfo & POPT_ARGFLAG_OPTIONAL))
/*@-compdef@*/ /* FIX: con->os->argv not defined */
return POPT_ERROR_NOARG;
/*@=compdef@*/
con->os->nextArg = NULL;
} else {
/*
* Make sure this isn't part of a short arg or the
* result of an alias expansion.
*/
if (con->os == con->optionStack &&
(opt->argInfo & POPT_ARGFLAG_STRIP) &&
canstrip) {
poptStripArg(con, con->os->next);
}
if (con->os->argv != NULL) { /* XXX can't happen */
/* XXX watchout: subtle side-effects live here. */
longArg = con->os->argv[con->os->next++];
longArg = expandNextArg(con, longArg);
con->os->nextArg = longArg;
}
}
}
longArg = NULL;
if (opt->arg) {
switch (opt->argInfo & POPT_ARG_MASK) {
case POPT_ARG_STRING:
/* XXX memory leak, hard to plug */
*((const char **) opt->arg) = (con->os->nextArg)
? xstrdup(con->os->nextArg) : NULL;
/*@switchbreak@*/ break;
case POPT_ARG_INT:
case POPT_ARG_LONG:
{ long aLong = 0;
char *end;
if (con->os->nextArg) {
aLong = strtol(con->os->nextArg, &end, 0);
if (!(end && *end == '\0'))
return POPT_ERROR_BADNUMBER;
}
if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_LONG) {
if (aLong == LONG_MIN || aLong == LONG_MAX)
return POPT_ERROR_OVERFLOW;
if (poptSaveLong((long *)opt->arg, opt->argInfo, aLong))
return POPT_ERROR_BADOPERATION;
} else {
if (aLong > INT_MAX || aLong < INT_MIN)
return POPT_ERROR_OVERFLOW;
if (poptSaveInt((int *)opt->arg, opt->argInfo, aLong))
return POPT_ERROR_BADOPERATION;
}
} /*@switchbreak@*/ break;
case POPT_ARG_FLOAT:
case POPT_ARG_DOUBLE:
{ double aDouble = 0.0;
char *end;
if (con->os->nextArg) {
/*@-mods@*/
int saveerrno = errno;
errno = 0;
aDouble = strtod(con->os->nextArg, &end);
if (errno == ERANGE)
return POPT_ERROR_OVERFLOW;
errno = saveerrno;
/*@=mods@*/
if (*end != '\0')
return POPT_ERROR_BADNUMBER;
}
if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_DOUBLE) {
*((double *) opt->arg) = aDouble;
} else {
#ifndef _ABS
#define _ABS(a) ((((a) - 0.0) < 0xff) ? -(a) : (a))
#endif
}
} /*@switchbreak@*/ break;
default:
fprintf(stdout,
POPT_("option type (%d) not implemented in popt\n"),
(opt->argInfo & POPT_ARG_MASK));
exit(EXIT_FAILURE);
/*@notreached@*/ /*@switchbreak@*/ break;
}
}
}
if (cb) {
/*@-internalglobs@*/
invokeCallbacksOPTION(con, con->options, opt, cbData, shorty);
/*@=internalglobs@*/
} else if (opt->val && ((opt->argInfo & POPT_ARG_MASK) != POPT_ARG_VAL))
done = 1;
if ((con->finalArgvCount + 2) >= (con->finalArgvAlloced)) {
con->finalArgvAlloced += 10;
con->finalArgv = (const char **)realloc(con->finalArgv,
sizeof(*con->finalArgv) * con->finalArgvAlloced);
}
if (con->finalArgv != NULL)
{ char *s = (char *)malloc(
(opt->longName ? strlen(opt->longName) : 0) + 3);
if (s != NULL) { /* XXX can't happen */
if (opt->longName)
sprintf(s, "%s%s",
((opt->argInfo & POPT_ARGFLAG_ONEDASH) ? "-" : "--"),
opt->longName);
else
sprintf(s, "-%c", opt->shortName);
con->finalArgv[con->finalArgvCount++] = s;
} else
con->finalArgv[con->finalArgvCount++] = NULL;
}
if (opt->arg && (opt->argInfo & POPT_ARG_MASK) == POPT_ARG_NONE)
/*@-ifempty@*/ ; /*@=ifempty@*/
else if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_VAL)
/*@-ifempty@*/ ; /*@=ifempty@*/
else if ((opt->argInfo & POPT_ARG_MASK) != POPT_ARG_NONE) {
if (con->finalArgv != NULL && con->os->nextArg)
con->finalArgv[con->finalArgvCount++] =
/*@-nullpass@*/ /* LCL: con->os->nextArg != NULL */
xstrdup(con->os->nextArg);
/*@=nullpass@*/
}
}
return (opt ? opt->val : -1); /* XXX can't happen */
}