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// command.cpp: implements the parsing and execution of a tiny script language
// which is largely backwards compatible with the quake console language.
#include "cube.h"
#include <memory>
enum { ID_VAR, ID_COMMAND, ID_ALIAS };
@interface Ident : OFObject
@property (nonatomic) int type; // one of ID_* above
@property (copy, nonatomic) OFString *name;
@property (nonatomic) int min, max; // ID_VAR
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return newstring(n);
}
// contains ALL vars/commands/aliases
OFMutableDictionary<OFString *, Ident *> *idents;
void
alias(char *name, char *action)
alias(OFString *name, OFString *action)
{
@autoreleasepool {
Ident *b = idents[@(name)];
if (!b) {
Ident *b = [[Ident alloc] init];
b.type = ID_ALIAS;
b.name = @(name);
b.action = @(action);
b.persist = true;
idents[b.name] = b;
} else {
if (b.type == ID_ALIAS)
b.action = @(action);
else
conoutf(
@"cannot redefine builtin %s with an alias",
name);
}
}
}
variable(char *name, int min, int cur, int max, int *storage, void (*fun)(),
variable(OFString *name, int min, int cur, int max, int *storage, void (*fun)(),
bool persist)
{
if (idents == nil)
idents = [[OFMutableDictionary alloc] init];
@autoreleasepool {
Ident *v = [[Ident alloc] init];
v.type = ID_VAR;
v.name = @(name);
v.min = min;
v.max = max;
v.storage = storage;
v.fun = fun;
v.persist = persist;
idents[v.name] = v;
}
setvar(char *name, int i)
setvar(OFString *name, int i)
{
@autoreleasepool {
*idents[@(name)].storage = i;
}
getvar(char *name)
getvar(OFString *name)
{
@autoreleasepool {
return *idents[@(name)].storage;
}
identexists(char *name)
identexists(OFString *name)
{
@autoreleasepool {
return (idents[@(name)] != nil);
}
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ATOI(w[4]));
break;
case ARG_NONE:
if (isdown)
((void(__cdecl *)())
ID.fun)();
break;
case ARG_1CSTR:
if (isdown)
((void(__cdecl *)(
char *))ID.fun)(
w[1]);
case ARG_1STR:
if (isdown) {
@autoreleasepool {
((void(
__cdecl *)(
OFString *))
ID.fun)(
@(w[1]));
}
}
break;
case ARG_2STR:
if (isdown)
((void(__cdecl *)(
char *,
char *))ID.fun)(
w[1], w[2]);
if (isdown) {
@autoreleasepool {
((void(
__cdecl *)(
OFString *,
OFString *))
ID.fun)(
@(w[1]),
@(w[2]));
}
}
break;
case ARG_3STR:
if (isdown)
((void(__cdecl *)(
char *, char *,
char *))ID.fun)(
w[1], w[2], w[3]);
if (isdown) {
@autoreleasepool {
((void(
__cdecl *)(
OFString *,
OFString *,
OFString *))
ID.fun)(
@(w[1]),
@(w[2]),
@(w[3]));
}
}
break;
case ARG_5STR:
if (isdown)
((void(__cdecl *)(
char *, char *,
char *, char *,
char *))ID.fun)(
w[1], w[2], w[3],
w[4], w[5]);
if (isdown) {
@autoreleasepool {
((void(
__cdecl *)(
OFString *,
OFString *,
OFString *,
OFString *,
OFString *))
ID.fun)(
@(w[1]),
@(w[2]),
@(w[3]),
@(w[4]),
@(w[5]));
}
}
break;
case ARG_DOWN:
((void(__cdecl *)(bool))ID.fun)(
isdown);
break;
case ARG_DWN1:
((void(__cdecl *)(
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strcat_s(
r, " ");
}
((void(__cdecl *)(
char *))ID.fun)(r);
break;
}
case ARG_1STR:
if (isdown) {
@autoreleasepool {
((void(
__cdecl *)(
OFString *))
ID.fun)(
@(w[1]));
}
}
break;
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}
break;
// alias, also used as functions and (global)
// variables
case ID_ALIAS:
for (int i = 1; i < numargs; i++) {
@autoreleasepool {
// set any arguments as
// (global) arg values so
// functions can access them
sprintf_sd(t)("arg%d", i);
alias(t, w[i]);
// set any arguments as
// (global) arg values
// so functions can
// access them
OFString *t = [OFString
stringWithFormat:
@"arg%d", i];
alias(t, @(w[i]));
}
}
// create new string here because alias
// could rebind itself
char *action =
newstring(ID.action.UTF8String);
val = execute(action, isdown);
gp()->deallocstr(action);
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}];
completeidx++;
if (completeidx >= idx)
completeidx = 0;
}
bool
execfile(char *cfgfile)
execfile(OFString *cfgfile)
{
@autoreleasepool {
string s;
strcpy_s(s, cfgfile);
char *buf = loadfile(path(s), NULL);
if (!buf)
return false;
execute(buf);
free(buf);
return true;
}
string s;
strcpy_s(s, cfgfile.UTF8String);
char *buf = loadfile(path(s), NULL);
if (!buf)
return false;
execute(buf);
free(buf);
return true;
}
}
void
exec(char *cfgfile)
exec(OFString *cfgfile)
{
if (!execfile(cfgfile))
conoutf(@"could not read \"%s\"", cfgfile);
if (!execfile(cfgfile)) {
@autoreleasepool {
conoutf(@"could not read \"%s\"", cfgfile.UTF8String);
}
}
}
void
writecfg()
{
FILE *f = fopen("config.cfg", "w");
if (!f)
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COMMAND(writecfg, ARG_NONE)
// below the commands that implement a small imperative language. thanks to the
// semantics of
// () and [] expressions, any control construct can be defined trivially.
void
intset(char *name, int v)
intset(OFString *name, int v)
{
string b;
itoa(b, v);
alias(name, b);
}
ifthen(char *cond, char *thenp, char *elsep)
ifthen(OFString *cond, OFString *thenp, OFString *elsep)
{
@autoreleasepool {
std::unique_ptr<char> cmd(strdup(
execute(cond[0] != '0' ? thenp : elsep);
}
(cond.UTF8String[0] != '0' ? thenp : elsep).UTF8String));
execute(cmd.get());
}
}
void
loopa(char *times, char *body)
loopa(OFString *times, OFString *body_)
{
@autoreleasepool {
int t = (int)times.longLongValue;
std::unique_ptr<char> body(strdup(body_.UTF8String));
int t = atoi(times);
loopi(t)
{
intset("i", i);
execute(body);
}
}
whilea(char *cond, char *body)
whilea(OFString *cond_, OFString *body_)
{
@autoreleasepool {
std::unique_ptr<char> cond(strdup(cond_.UTF8String));
std::unique_ptr<char> body(strdup(body_.UTF8String));
while (execute(cond))
execute(body);
while (execute(cond.get()))
execute(body.get());
} // can't get any simpler than this :)
alias("s", s);
alias(@"s", @(s));
}
}
void
concatword(char *s)
{
for (char *a = s, *b = s; *a = *b; b++)
if (*a != ' ')
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while (*a)
if (*a++ == ' ')
n++;
return n + 1;
}
void
at(char *s, char *pos)
at(OFString *s_, OFString *pos)
{
@autoreleasepool {
int n = atoi(pos);
loopi(n) s += strspn(s += strcspn(s, " \0"), " ");
s[strcspn(s, " \0")] = 0;
concat(s);
int n = (int)pos.longLongValue;
std::unique_ptr<char> copy(strdup(s_.UTF8String));
char *s = copy.get();
loopi(n) s += strspn(s += strcspn(s, " \0"), " ");
s[strcspn(s, " \0")] = 0;
concat(s);
}
}
COMMANDN(loop, loopa, ARG_2STR)
COMMANDN(while, whilea, ARG_2STR)
COMMANDN(if, ifthen, ARG_3STR)
COMMAND(onrelease, ARG_DWN1)
COMMAND(exec, ARG_1CSTR)
COMMAND(exec, ARG_1STR)
COMMAND(concat, ARG_VARI)
COMMAND(concatword, ARG_VARI)
COMMAND(at, ARG_2STR)
COMMAND(listlen, ARG_1EST)
int
add(int a, int b)
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