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// command.cpp: implements the parsing and execution of a tiny script language which
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// is largely backwards compatible with the quake console language.
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extern void conoutf(const char *s, ...);
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extern void conoutf(int type, const char *s, ...);
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extern int variable(const char *name, int min, int cur, int max, int *storage, void (*fun)(), int flags);
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extern float fvariable(const char *name, float min, float cur, float max, float *storage, void (*fun)(), int flags);
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extern char *svariable(const char *name, const char *cur, char **storage, void (*fun)(), int flags);
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extern void setvar(const char *name, int i, bool dofunc = true, bool doclamp = true);
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extern void setfvar(const char *name, float f, bool dofunc = true, bool doclamp = true);
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extern void setsvar(const char *name, const char *str, bool dofunc = true);
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extern void setvarchecked(ident *id, int val);
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extern void setfvarchecked(ident *id, float val);
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extern void setsvarchecked(ident *id, const char *val);
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extern void touchvar(const char *name);
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extern int getvar(const char *name);
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extern int getvarmin(const char *name);
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extern int getvarmax(const char *name);
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extern bool identexists(const char *name);
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extern ident *getident(const char *name);
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extern ident *newident(const char *name);
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extern bool addcommand(const char *name, void (*fun)(), const char *narg);
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extern int execute(const char *p);
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extern char *executeret(const char *p);
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extern bool execfile(const char *cfgfile, bool msg = true);
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extern void alias(const char *name, const char *action);
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extern const char *getalias(const char *name);
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extern void fatal(const char *s, ...);
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extern char *path(char *s);
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extern char *path(const char *s, bool copy);
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extern const char *parentdir(const char *directory);
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extern bool fileexists(const char *path, const char *mode);
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extern bool createdir(const char *path);
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extern size_t fixpackagedir(char *dir);
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extern void sethomedir(const char *dir);
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extern void addpackagedir(const char *dir);
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extern const char *findfile(const char *filename, const char *mode);
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extern stream *openrawfile(const char *filename, const char *mode);
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extern stream *openzipfile(const char *filename, const char *mode);
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extern stream *openfile(const char *filename, const char *mode);
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extern stream *opentempfile(const char *filename, const char *mode);
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extern char *loadfile(const char *fn, int *size);
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extern bool listdir(const char *dir, const char *ext, vector<char *> &files);
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extern int listfiles(const char *dir, const char *ext, vector<char *> &files);
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extern int listzipfiles(const char *dir, const char *ext, vector<char *> &files);
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extern void seedMT(uint seed);
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extern uint randomMT(void);
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// XXX =========================
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char *exchangestr(char *o, const char *n) { delete[] o; return newstring(n); }
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typedef hashtable<const char *, ident> identtable;
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identtable *idents = NULL; // contains ALL vars/commands/aliases
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bool overrideidents = false, persistidents = true;
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void clearstack(ident &id)
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identstack *stack = id.stack;
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delete[] stack->action;
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identstack *tmp = stack;
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enumerate(*idents, ident, i, if(i.type==ID_ALIAS) { DELETEA(i.name); DELETEA(i.action); if(i.stack) clearstack(i); });
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if(idents) idents->clear();
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void clearoverride(ident &i)
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if(i.override==NO_OVERRIDE) return;
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if(i.action != i.isexecuting) delete[] i.action;
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i.action = newstring("");
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*i.storage.i = i.overrideval.i;
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*i.storage.f = i.overrideval.f;
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delete[] *i.storage.s;
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*i.storage.s = i.overrideval.s;
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i.override = NO_OVERRIDE;
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void clearoverrides()
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enumerate(*idents, ident, i, clearoverride(i));
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void pushident(ident &id, char *val)
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if(id.type != ID_ALIAS) return;
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identstack *stack = new identstack;
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stack->action = id.isexecuting==id.action ? newstring(id.action) : id.action;
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stack->next = id.stack;
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void popident(ident &id)
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if(id.type != ID_ALIAS || !id.stack) return;
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if(id.action != id.isexecuting) delete[] id.action;
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identstack *stack = id.stack;
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id.action = stack->action;
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id.stack = stack->next;
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ident *newident(const char *name)
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ident *id = idents->access(name);
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ident init(ID_ALIAS, newstring(name), newstring(""), persistidents ? IDF_PERSIST : 0);
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id = &idents->access(init.name, init);
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void pusha(const char *name, char *action)
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pushident(*newident(name), action);
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void push(char *name, char *action)
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pusha(name, newstring(action));
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ident *id = idents->access(name);
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if(id) popident(*id);
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void resetvar(char *name)
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ident *id = idents->access(name);
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if(id->flags&IDF_READONLY) conoutf(CON_ERROR, "variable %s is read-only", id->name);
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else clearoverride(*id);
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COMMAND(resetvar, "s");
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void aliasa(const char *name, char *action)
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ident *b = idents->access(name);
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ident b(ID_ALIAS, newstring(name), action, persistidents ? IDF_PERSIST : 0);
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if(overrideidents) b.override = OVERRIDDEN;
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idents->access(b.name, b);
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else if(b->type != ID_ALIAS)
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conoutf(CON_ERROR, "cannot redefine builtin %s with an alias", name);
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if(b->action != b->isexecuting) delete[] b->action;
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if(overrideidents) b->override = OVERRIDDEN;
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if(b->override != NO_OVERRIDE) b->override = NO_OVERRIDE;
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if(!(b->flags & IDF_PERSIST)) b->flags |= IDF_PERSIST;
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else if(b->flags & IDF_PERSIST) b->flags &= ~IDF_PERSIST;
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void alias(const char *name, const char *action) { aliasa(name, newstring(action)); }
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COMMAND(alias, "ss");
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// variable's and commands are registered through globals, see cube.h
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int variable(const char *name, int min, int cur, int max, int *storage, void (*fun)(), int flags)
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if(!idents) idents = new identtable;
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ident v(ID_VAR, name, min, cur, max, storage, (void *)fun, flags);
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idents->access(name, v);
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float fvariable(const char *name, float min, float cur, float max, float *storage, void (*fun)(), int flags)
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if(!idents) idents = new identtable;
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ident v(ID_FVAR, name, min, cur, max, storage, (void *)fun, flags);
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idents->access(name, v);
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char *svariable(const char *name, const char *cur, char **storage, void (*fun)(), int flags)
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if(!idents) idents = new identtable;
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ident v(ID_SVAR, name, newstring(cur), storage, (void *)fun, flags);
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idents->access(name, v);
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#define _GETVAR(id, vartype, name, retval) \
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ident *id = idents->access(name); \
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if(!id || id->type!=vartype) return retval;
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#define GETVAR(id, name, retval) _GETVAR(id, ID_VAR, name, retval)
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#define OVERRIDEVAR(errorval, saveval, resetval, clearval) \
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if(overrideidents || id->flags&IDF_OVERRIDE) \
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if(id->flags&IDF_PERSIST) \
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conoutf(CON_ERROR, "cannot override persistent variable %s", id->name); \
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if(id->override==NO_OVERRIDE) { saveval; id->override = OVERRIDDEN; } \
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if(id->override!=NO_OVERRIDE) { resetval; id->override = NO_OVERRIDE; } \
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void setvar(const char *name, int i, bool dofunc, bool doclamp)
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OVERRIDEVAR(return, id->overrideval.i = *id->storage.i, , )
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if(doclamp) *id->storage.i = clamp(i, id->minval, id->maxval);
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else *id->storage.i = i;
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if(dofunc) id->changed();
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void setfvar(const char *name, float f, bool dofunc, bool doclamp)
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_GETVAR(id, ID_FVAR, name, );
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OVERRIDEVAR(return, id->overrideval.f = *id->storage.f, , );
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if(doclamp) *id->storage.f = clamp(f, id->minvalf, id->maxvalf);
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else *id->storage.f = f;
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if(dofunc) id->changed();
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void setsvar(const char *name, const char *str, bool dofunc)
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_GETVAR(id, ID_SVAR, name, );
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OVERRIDEVAR(return, id->overrideval.s = *id->storage.s, delete[] id->overrideval.s, delete[] *id->storage.s);
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*id->storage.s = newstring(str);
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if(dofunc) id->changed();
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int getvar(const char *name)
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return *id->storage.i;
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int getvarmin(const char *name)
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int getvarmax(const char *name)
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bool identexists(const char *name) { return idents->access(name)!=NULL; }
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ident *getident(const char *name) { return idents->access(name); }
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void touchvar(const char *name)
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ident *id = idents->access(name);
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if(id) switch(id->type)
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const char *getalias(const char *name)
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ident *i = idents->access(name);
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return i && i->type==ID_ALIAS ? i->action : "";
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void setvarchecked(ident *id, int val)
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if(id->flags&IDF_READONLY) conoutf(CON_ERROR, "variable %s is read-only", id->name);
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else if(!(id->flags&IDF_OVERRIDE) || overrideidents || game::allowedittoggle())
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OVERRIDEVAR(return, id->overrideval.i = *id->storage.i, , )
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if(val<id->minval || val>id->maxval)
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val = val<id->minval ? id->minval : id->maxval; // clamp to valid range
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(id->minval <= 255 ? "valid range for %s is %d..0x%X" : "valid range for %s is 0x%X..0x%X") :
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"valid range for %s is %d..%d",
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id->name, id->minval, id->maxval);
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*id->storage.i = val;
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id->changed(); // call trigger function if available
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if(id->flags&IDF_OVERRIDE && !overrideidents) game::vartrigger(id);
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void setfvarchecked(ident *id, float val)
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if(id->flags&IDF_READONLY) conoutf(CON_ERROR, "variable %s is read-only", id->name);
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else if(!(id->flags&IDF_OVERRIDE) || overrideidents || game::allowedittoggle())
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OVERRIDEVAR(return, id->overrideval.f = *id->storage.f, , );
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if(val<id->minvalf || val>id->maxvalf)
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val = val<id->minvalf ? id->minvalf : id->maxvalf; // clamp to valid range
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conoutf(CON_ERROR, "valid range for %s is %s..%s", id->name, floatstr(id->minvalf), floatstr(id->maxvalf));
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*id->storage.f = val;
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if(id->flags&IDF_OVERRIDE && !overrideidents) game::vartrigger(id);
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void setsvarchecked(ident *id, const char *val)
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if(id->flags&IDF_READONLY) conoutf(CON_ERROR, "variable %s is read-only", id->name);
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else if(!(id->flags&IDF_OVERRIDE) || overrideidents || game::allowedittoggle())
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OVERRIDEVAR(return, id->overrideval.s = *id->storage.s, delete[] id->overrideval.s, delete[] *id->storage.s);
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*id->storage.s = newstring(val);
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if(id->flags&IDF_OVERRIDE && !overrideidents) game::vartrigger(id);
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bool addcommand(const char *name, void (*fun)(), const char *narg)
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if(!idents) idents = new identtable;
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ident c(ID_COMMAND, name, narg, (void *)fun);
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idents->access(name, c);
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void addident(const char *name, ident *id)
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if(!idents) idents = new identtable;
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idents->access(name, *id);
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static vector<vector<char> *> wordbufs;
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static int bufnest = 0;
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char *parseexp(const char *&p, int right);
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void parsemacro(const char *&p, int level, vector<char> &wordbuf)
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while(*p=='@') p++, escape++;
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while(escape--) wordbuf.add('@');
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char *ret = parseexp(p, ')');
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for(char *sub = ret; *sub; ) wordbuf.add(*sub++);
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static vector<char> ident;
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while(isalnum(*p) || *p=='_') ident.add(*p++);
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const char *alias = getalias(ident.getbuf());
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while(*alias) wordbuf.add(*alias++);
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const char *parsestring(const char *p)
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for(; *p; p++) switch(*p)
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int escapestring(char *dst, const char *src, const char *end)
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if(src >= end) break;
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case 'n': *dst++ = '\n'; break;
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case 't': *dst++ = '\t'; break;
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case 'f': *dst++ = '\f'; break;
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default: *dst++ = e; break;
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char *parseexp(const char *&p, int right) // parse any nested set of () or []
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if(bufnest++>=wordbufs.length()) wordbufs.add(new vector<char>);
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vector<char> &wordbuf = *wordbufs[bufnest-1];
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for(int brak = 1; brak; )
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size_t n = strcspn(p, "\r@\"/()[]");
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if(left == '[') { parsemacro(p, brak, wordbuf); continue; }
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const char *end = parsestring(p);
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wordbuf.put(p, end - p);
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if(*p=='\"') wordbuf.add(*p++);
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p += strcspn(p, "\n\0");
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conoutf(CON_ERROR, "missing \"%c\"", right);
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case '(': case '[': if(c==left) brak++; break;
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case ')': case ']': if(c==right) brak--; break;
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char *ret = executeret(wordbuf.getbuf()); // evaluate () exps directly, and substitute result
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s = ret ? ret : newstring("");
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s = newstring(wordbuf.getbuf(), wordbuf.length());
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char *lookup(char *n) // find value of ident referenced with $ in exp
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ident *id = idents->access(n+1);
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if(id) switch(id->type)
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case ID_VAR: return exchangestr(n, intstr(*id->storage.i));
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case ID_FVAR: return exchangestr(n, floatstr(*id->storage.f));
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case ID_SVAR: return exchangestr(n, *id->storage.s);
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case ID_ALIAS: return exchangestr(n, id->action);
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conoutf(CON_ERROR, "unknown alias lookup: %s", n+1);
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char *parseword(const char *&p, int arg, int &infix) // parse single argument, including expressions
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p += strspn(p, " \t\r");
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if(p[0]!='/' || p[1]!='/') break;
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p += strcspn(p, "\n\0");
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const char *end = parsestring(p);
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char *s = newstring(end - p);
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s[escapestring(s, p, end)] = '\0';
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if(*p=='(') return parseexp(p, ')');
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if(*p=='[') return parseexp(p, ']');
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const char *word = p;
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p += strcspn(p, "/; \t\r\n\0");
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if(p[0]!='/' || p[1]=='/') break;
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else if(p[1]=='\0') { p++; break; }
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if(p-word==0) return NULL;
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if(arg==1 && p-word==1) switch(*word)
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case '=': infix = *word; break;
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char *s = newstring(word, p-word);
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if(*s=='$') return lookup(s); // substitute variables
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char *conc(char **w, int n, bool space)
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int len = space ? max(n-1, 0) : 0;
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loopj(n) len += (int)strlen(w[j]);
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char *r = newstring("", len);
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strcat(r, w[i]); // make string-list out of all arguments
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if(space) strcat(r, " ");
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VARN(numargs, _numargs, 25, 0, 0);
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static inline bool isinteger(char *c)
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return isdigit(c[0]) || ((c[0]=='+' || c[0]=='-' || c[0]=='.') && isdigit(c[1]));
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char *commandret = NULL;
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char *executeret(const char *p) // all evaluation happens here, recursively
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const int MAXWORDS = 25; // limit, remove
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#define setretval(v) { char *rv = v; if(rv) retval = rv; }
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for(bool cont = true; cont;) // for each ; seperated statement
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int numargs = MAXWORDS, infix = 0;
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loopi(MAXWORDS) // collect all argument values
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w[i] = parseword(p, i, infix); // parse and evaluate exps
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if(!w[i]) { numargs = i; break; }
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p += strcspn(p, ";\n\0");
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cont = *p++!=0; // more statements if this isn't the end of the string
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if(!c || !*c) continue; // empty statement
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aliasa(c, numargs>2 ? w[2] : newstring(""));
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ident *id = idents->access(c);
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conoutf(CON_ERROR, "unknown command: %s", c);
672
setretval(newstring(c));
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else switch(id->type)
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case ID_COMMAND: // game defined commands
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if(id->type==ID_CCOMMAND) v[n++] = id->self;
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for(const char *a = id->narg; *a; a++, n++) switch(*a)
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case 's': v[n] = ++wn < numargs ? w[wn] : (char *)""; break;
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case 'i': nstor[n].i = ++wn < numargs ? parseint(w[wn]) : 0; v[n] = &nstor[n].i; break;
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case 'f': nstor[n].f = ++wn < numargs ? parsefloat(w[wn]) : 0.0f; v[n] = &nstor[n].f; break;
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case 'D': nstor[n].i = addreleaseaction(id->name) ? 1 : 0; v[n] = &nstor[n].i; break;
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case 'V': v[n++] = w+1; nstor[n].i = numargs-1; v[n] = &nstor[n].i; break;
697
case 'C': if(!cargs) cargs = conc(w+1, numargs-1, true); v[n] = cargs; break;
698
default: fatal("builtin declared with illegal type");
702
case 0: ((void (__cdecl *)() )id->fun)(); break;
703
case 1: ((void (__cdecl *)(void *) )id->fun)(v[0]); break;
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case 2: ((void (__cdecl *)(void *, void *) )id->fun)(v[0], v[1]); break;
705
case 3: ((void (__cdecl *)(void *, void *, void *) )id->fun)(v[0], v[1], v[2]); break;
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case 4: ((void (__cdecl *)(void *, void *, void *, void *) )id->fun)(v[0], v[1], v[2], v[3]); break;
707
case 5: ((void (__cdecl *)(void *, void *, void *, void *, void *))id->fun)(v[0], v[1], v[2], v[3], v[4]); break;
708
case 6: ((void (__cdecl *)(void *, void *, void *, void *, void *, void *))id->fun)(v[0], v[1], v[2], v[3], v[4], v[5]); break;
709
case 7: ((void (__cdecl *)(void *, void *, void *, void *, void *, void *, void *))id->fun)(v[0], v[1], v[2], v[3], v[4], v[5], v[6]); break;
710
case 8: ((void (__cdecl *)(void *, void *, void *, void *, void *, void *, void *, void *))id->fun)(v[0], v[1], v[2], v[3], v[4], v[5], v[6], v[7]); break;
711
default: fatal("builtin declared with too many args (use V?)");
713
if(cargs) delete[] cargs;
714
setretval(commandret);
719
case ID_VAR: // game defined variables
722
if(id->flags&IDF_HEX && id->maxval==0xFFFFFF)
723
conoutf("%s = 0x%.6X (%d, %d, %d)", c, *id->storage.i, (*id->storage.i>>16)&0xFF, (*id->storage.i>>8)&0xFF, *id->storage.i&0xFF);
725
conoutf(id->flags&IDF_HEX ? "%s = 0x%X" : "%s = %d", c, *id->storage.i); // var with no value just prints its current value
729
int val = parseint(w[1]);
730
if(id->flags&IDF_HEX && numargs > 2)
733
val |= parseint(w[2])<<8;
734
if(numargs > 3) val |= parseint(w[3]);
736
setvarchecked(id, val);
741
if(numargs <= 1) conoutf("%s = %s", c, floatstr(*id->storage.f));
742
else setfvarchecked(id, parsefloat(w[1]));
746
if(numargs <= 1) conoutf(strchr(*id->storage.s, '"') ? "%s = [%s]" : "%s = \"%s\"", c, *id->storage.s);
747
else setsvarchecked(id, w[1]);
750
case ID_ALIAS: // alias, also used as functions and (global) variables
753
static vector<ident *> argids;
754
for(int i = 1; i<numargs; i++)
756
if(i > argids.length())
758
defformatstring(argname)("arg%d", i);
759
argids.add(newident(argname));
761
pushident(*argids[i-1], w[i]); // set any arguments as (global) arg values so functions can access them
763
_numargs = numargs-1;
764
bool wasoverriding = overrideidents;
765
if(id->override!=NO_OVERRIDE) overrideidents = true;
766
char *wasexecuting = id->isexecuting;
767
id->isexecuting = id->action;
768
setretval(executeret(id->action));
769
if(id->isexecuting != id->action && id->isexecuting != wasexecuting) delete[] id->isexecuting;
770
id->isexecuting = wasexecuting;
771
overrideidents = wasoverriding;
772
for(int i = 1; i<numargs; i++) popident(*argids[i-1]);
777
loopj(numargs) if(w[j]) delete[] w[j];
782
int execute(const char *p)
784
char *ret = executeret(p);
786
if(ret) { i = parseint(ret); delete[] ret; }
791
static int sortidents(ident **x, ident **y)
793
return strcmp((*x)->name, (*y)->name);
796
void writeescapedstring(stream *f, const char *s)
799
for(; *s; s++) switch(*s)
801
case '\n': f->write("^n", 2); break;
802
case '\t': f->write("^t", 2); break;
803
case '\f': f->write("^f", 2); break;
804
case '"': f->write("^\"", 2); break;
805
default: f->putchar(*s); break;
811
// below the commands that implement a small imperative language. thanks to the semantics of
812
// () and [] expressions, any control construct can be defined trivially.
814
static string retbuf[3];
815
static int retidx = 0;
817
const char *intstr(int v)
819
retidx = (retidx + 1)%3;
820
formatstring(retbuf[retidx])("%d", v);
821
return retbuf[retidx];
826
commandret = newstring(intstr(v));
829
const char *floatstr(float v)
831
retidx = (retidx + 1)%3;
832
formatstring(retbuf[retidx])(v==int(v) ? "%.1f" : "%.7g", v);
833
return retbuf[retidx];
836
void floatret(float v)
838
commandret = newstring(floatstr(v));
842
#define ICOMMANDNAME(name) _stdcmd
844
ICOMMAND(if, "sss", (char *cond, char *t, char *f), commandret = executeret(cond[0] && (!isinteger(cond) || parseint(cond)) ? t : f));
845
ICOMMAND(?, "sss", (char *cond, char *t, char *f), result(cond[0] && (!isinteger(cond) || parseint(cond)) ? t : f));
846
ICOMMAND(loop, "sis", (char *var, int *n, char *body),
849
ident *id = newident(var);
850
if(id->type!=ID_ALIAS) return;
853
if(i) sprintf(id->action, "%d", i);
854
else pushident(*id, newstring("0", 16));
859
ICOMMAND(loopwhile, "siss", (char *var, int *n, char *cond, char *body),
862
ident *id = newident(var);
863
if(id->type!=ID_ALIAS) return;
866
if(i) sprintf(id->action, "%d", i);
867
else pushident(*id, newstring("0", 16));
868
if(!execute(cond)) break;
873
ICOMMAND(while, "ss", (char *cond, char *body), while(execute(cond)) execute(body)); // can't get any simpler than this :)
875
void concat(const char *s) { commandret = newstring(s); }
876
void result(const char *s) { commandret = newstring(s); }
878
void concatword(char **args, int *numargs)
880
commandret = conc(args, *numargs, false);
883
void format(char **args, int *numargs)
893
if(i >= '1' && i <= '9')
896
const char *sub = i < *numargs ? args[i] : "";
897
while(*sub) s.add(*sub++);
907
#define whitespaceskip s += strspn(s, "\n\t ")
908
#define elementskip *s=='"' ? (++s, s += strcspn(s, "\"\n\0"), s += *s=='"') : s += strcspn(s, "\n\t \0")
910
void explodelist(const char *s, vector<char *> &elems)
915
const char *elem = s;
917
elems.add(*elem=='"' ? newstring(elem+1, s-elem-(s[-1]=='"' ? 2 : 1)) : newstring(elem, s-elem));
922
char *indexlist(const char *s, int pos)
938
return newstring(e, s-e);
941
int listlen(const char *s)
945
for(; *s; n++) elementskip, whitespaceskip;
949
void at(char *s, int *pos)
951
commandret = indexlist(s, *pos);
954
void substr(char *s, int *start, char *count)
956
int len = strlen(s), offset = clamp(*start, 0, len);
957
commandret = newstring(&s[offset], count[0] ? clamp(parseint(count), 0, len - offset) : len - offset);
960
void getalias_(char *s)
965
COMMAND(concat, "C");
966
COMMAND(result, "s");
967
COMMAND(concatword, "V");
968
COMMAND(format, "V");
970
COMMAND(substr, "sis");
971
ICOMMAND(listlen, "s", (char *s), intret(listlen(s)));
972
COMMANDN(getalias, getalias_, "s");
974
void looplist(const char *var, const char *list, const char *body, bool search)
976
ident *id = newident(var);
977
if(id->type!=ID_ALIAS) { if(search) intret(-1); return; }
979
for(const char *s = list;;)
982
if(!*s) { if(search) intret(-1); break; }
983
const char *start = s;
986
if(*start=='"') { start++; if(end[-1]=='"') --end; }
987
char *val = newstring(start, end-start);
988
if(n++) aliasa(id->name, val);
989
else pushident(*id, val);
990
if(execute(body) && search) { intret(n-1); break; }
995
void prettylist(const char *s, const char *conj)
999
for(int len = listlen(s), n = 0; *s; n++)
1001
const char *elem = s;
1003
p.put(elem, s - elem);
1006
if(len > 2 || !conj[0]) p.add(',');
1007
if(n+2 == len && conj[0])
1010
p.put(conj, strlen(conj));
1019
COMMAND(prettylist, "ss");
1021
int listincludes(const char *list, const char *needle, int needlelen)
1023
const char *s = list;
1028
const char *elem = s;
1034
len -= s[-1]=='"' ? 2 : 1;
1036
if(needlelen == len && !strncmp(needle, elem, len)) return offset;
1043
char *listdel(const char *s, const char *del)
1049
const char *elem = s;
1055
len -= s[-1]=='"' ? 2 : 1;
1057
if(listincludes(del, elem, len) < 0)
1059
if(!p.empty()) p.add(' ');
1065
return newstring(p.getbuf());
1068
ICOMMAND(listdel, "ss", (char *list, char *del), commandret = listdel(list, del));
1069
ICOMMAND(indexof, "ss", (char *list, char *elem), intret(listincludes(list, elem, strlen(elem))));
1070
ICOMMAND(listfind, "sss", (char *var, char *list, char *body), looplist(var, list, body, true));
1071
ICOMMAND(looplist, "sss", (char *var, char *list, char *body), looplist(var, list, body, false));
1073
ICOMMAND(+, "ii", (int *a, int *b), intret(*a + *b));
1074
ICOMMAND(*, "ii", (int *a, int *b), intret(*a * *b));
1075
ICOMMAND(-, "ii", (int *a, int *b), intret(*a - *b));
1076
ICOMMAND(+f, "ff", (float *a, float *b), floatret(*a + *b));
1077
ICOMMAND(*f, "ff", (float *a, float *b), floatret(*a * *b));
1078
ICOMMAND(-f, "ff", (float *a, float *b), floatret(*a - *b));
1079
ICOMMAND(=, "ii", (int *a, int *b), intret((int)(*a == *b)));
1080
ICOMMAND(!=, "ii", (int *a, int *b), intret((int)(*a != *b)));
1081
ICOMMAND(<, "ii", (int *a, int *b), intret((int)(*a < *b)));
1082
ICOMMAND(>, "ii", (int *a, int *b), intret((int)(*a > *b)));
1083
ICOMMAND(<=, "ii", (int *a, int *b), intret((int)(*a <= *b)));
1084
ICOMMAND(>=, "ii", (int *a, int *b), intret((int)(*a >= *b)));
1085
ICOMMAND(=f, "ff", (float *a, float *b), intret((int)(*a == *b)));
1086
ICOMMAND(!=f, "ff", (float *a, float *b), intret((int)(*a != *b)));
1087
ICOMMAND(<f, "ff", (float *a, float *b), intret((int)(*a < *b)));
1088
ICOMMAND(>f, "ff", (float *a, float *b), intret((int)(*a > *b)));
1089
ICOMMAND(<=f, "ff", (float *a, float *b), intret((int)(*a <= *b)));
1090
ICOMMAND(>=f, "ff", (float *a, float *b), intret((int)(*a >= *b)));
1091
ICOMMAND(^, "ii", (int *a, int *b), intret(*a ^ *b));
1092
ICOMMAND(!, "i", (int *a), intret(*a == 0));
1093
ICOMMAND(&, "ii", (int *a, int *b), intret(*a & *b));
1094
ICOMMAND(|, "ii", (int *a, int *b), intret(*a | *b));
1095
ICOMMAND(~, "i", (int *a), intret(~*a));
1096
ICOMMAND(^~, "ii", (int *a, int *b), intret(*a ^ ~*b));
1097
ICOMMAND(&~, "ii", (int *a, int *b), intret(*a & ~*b));
1098
ICOMMAND(|~, "ii", (int *a, int *b), intret(*a | ~*b));
1099
ICOMMAND(<<, "ii", (int *a, int *b), intret(*a << *b));
1100
ICOMMAND(>>, "ii", (int *a, int *b), intret(*a >> *b));
1101
ICOMMAND(&&, "V", (char **args, int *numargs),
1104
loopi(*numargs) { val = execute(args[i]); if(!val) break; }
1107
ICOMMAND(||, "V", (char **args, int *numargs),
1110
loopi(*numargs) { val = execute(args[i]); if(val) break; }
1114
ICOMMAND(div, "ii", (int *a, int *b), intret(*b ? *a / *b : 0));
1115
ICOMMAND(mod, "ii", (int *a, int *b), intret(*b ? *a % *b : 0));
1116
ICOMMAND(divf, "ff", (float *a, float *b), floatret(*b ? *a / *b : 0));
1117
ICOMMAND(modf, "ff", (float *a, float *b), floatret(*b ? fmod(*a, *b) : 0));
1118
ICOMMAND(sin, "f", (float *a), floatret(sin(*a*RAD)));
1119
ICOMMAND(cos, "f", (float *a), floatret(cos(*a*RAD)));
1120
ICOMMAND(tan, "f", (float *a), floatret(tan(*a*RAD)));
1121
ICOMMAND(asin, "f", (float *a), floatret(asin(*a)/RAD));
1122
ICOMMAND(acos, "f", (float *a), floatret(acos(*a)/RAD));
1123
ICOMMAND(atan, "f", (float *a), floatret(atan(*a)/RAD));
1124
ICOMMAND(sqrt, "f", (float *a), floatret(sqrt(*a)));
1125
ICOMMAND(pow, "ff", (float *a, float *b), floatret(pow(*a, *b)));
1126
ICOMMAND(loge, "f", (float *a), floatret(log(*a)));
1127
ICOMMAND(log2, "f", (float *a), floatret(log(*a)/M_LN2));
1128
ICOMMAND(log10, "f", (float *a), floatret(log10(*a)));
1129
ICOMMAND(exp, "f", (float *a), floatret(exp(*a)));
1130
ICOMMAND(min, "V", (char **args, int *numargs),
1132
int val = *numargs > 0 ? parseint(args[*numargs - 1]) : 0;
1133
loopi(*numargs - 1) val = min(val, parseint(args[i]));
1136
ICOMMAND(max, "V", (char **args, int *numargs),
1138
int val = *numargs > 0 ? parseint(args[*numargs - 1]) : 0;
1139
loopi(*numargs - 1) val = max(val, parseint(args[i]));
1142
ICOMMAND(minf, "V", (char **args, int *numargs),
1144
float val = *numargs > 0 ? parsefloat(args[*numargs - 1]) : 0.0f;
1145
loopi(*numargs - 1) val = min(val, parsefloat(args[i]));
1148
ICOMMAND(maxf, "V", (char **args, int *numargs),
1150
float val = *numargs > 0 ? parsefloat(args[*numargs - 1]) : 0.0f;
1151
loopi(*numargs - 1) val = max(val, parsefloat(args[i]));
1155
ICOMMAND(cond, "V", (char **args, int *numargs),
1157
for(int i = 0; i < *numargs; i += 2)
1159
if(execute(args[i]))
1161
if(i+1 < *numargs) commandret = executeret(args[i+1]);
1166
#define CASECOMMAND(name, fmt, type, compare) \
1167
ICOMMAND(name, fmt "V", (type *val, char **args, int *numargs), \
1170
for(i = 1; i+1 < *numargs; i += 2) \
1174
commandret = executeret(args[i+1]); \
1178
if(i < *numargs) commandret = executeret(args[i]); \
1180
CASECOMMAND(case, "i", int, parseint(args[i]) == *val);
1181
CASECOMMAND(casef, "f", float, parsefloat(args[i]) == *val);
1182
CASECOMMAND(cases, "s", char, !strcmp(args[i], val));
1184
ICOMMAND(rnd, "ii", (int *a, int *b), intret(*a - *b > 0 ? rnd(*a - *b) + *b : *b));
1185
ICOMMAND(strcmp, "ss", (char *a, char *b), intret(strcmp(a,b)==0));
1186
ICOMMAND(=s, "ss", (char *a, char *b), intret(strcmp(a,b)==0));
1187
ICOMMAND(!=s, "ss", (char *a, char *b), intret(strcmp(a,b)!=0));
1188
ICOMMAND(<s, "ss", (char *a, char *b), intret(strcmp(a,b)<0));
1189
ICOMMAND(>s, "ss", (char *a, char *b), intret(strcmp(a,b)>0));
1190
ICOMMAND(<=s, "ss", (char *a, char *b), intret(strcmp(a,b)<=0));
1191
ICOMMAND(>=s, "ss", (char *a, char *b), intret(strcmp(a,b)>=0));
1192
ICOMMAND(echo, "C", (char *s), conoutf("%s", s));
1193
ICOMMAND(error, "C", (char *s), conoutf(CON_ERROR, s));
1194
ICOMMAND(strstr, "ss", (char *a, char *b), { char *s = strstr(a, b); intret(s ? s-a : -1); });
1195
ICOMMAND(strlen, "s", (char *s), intret(strlen(s)));
1197
char *strreplace(const char *s, const char *oldval, const char *newval)
1201
int oldlen = strlen(oldval);
1202
if(!oldlen) return newstring(s);
1205
const char *found = strstr(s, oldval);
1208
while(s < found) buf.add(*s++);
1209
for(const char *n = newval; *n; n++) buf.add(*n);
1214
while(*s) buf.add(*s++);
1216
return newstring(buf.getbuf(), buf.length());
1221
ICOMMAND(strreplace, "sss", (char *s, char *o, char *n), commandret = strreplace(s, o, n));
1224
ICOMMAND(getmillis, "i", (int *total), intret(*total ? totalmillis : lastmillis));
1230
bool override, persist;
1232
vector<sleepcmd> sleepcmds;
1234
void addsleep(int *msec, char *cmd)
1236
sleepcmd &s = sleepcmds.add();
1237
s.delay = max(*msec, 1);
1238
s.millis = lastmillis;
1239
s.command = newstring(cmd);
1240
s.override = overrideidents;
1241
s.persist = persistidents;
1244
COMMANDN(sleep, addsleep, "is");
1246
void checksleep(int millis)
1250
sleepcmd &s = sleepcmds[i];
1251
if(millis - s.millis >= s.delay)
1253
char *cmd = s.command; // execute might create more sleep commands
1255
bool waspersisting = persistidents, wasoverriding = overrideidents;
1256
persistidents = s.persist;
1257
overrideidents = s.override;
1259
persistidents = waspersisting;
1260
overrideidents = wasoverriding;
1262
if(sleepcmds.inrange(i) && !sleepcmds[i].command) sleepcmds.remove(i--);
1267
void clearsleep(bool clearoverrides)
1270
loopv(sleepcmds) if(sleepcmds[i].command)
1272
if(clearoverrides && !sleepcmds[i].override) sleepcmds[len++] = sleepcmds[i];
1273
else delete[] sleepcmds[i].command;
1275
sleepcmds.shrink(len);
1278
void clearsleep_(int *clearoverrides)
1280
clearsleep(*clearoverrides!=0 || overrideidents);
1283
COMMANDN(clearsleep, clearsleep_, "i");
1287
// XXX Emscripten: console.cpp
1289
struct cline { char *line; int type, outtime; };
1290
vector<cline> conlines;
1292
int commandmillis = -1;
1294
char *commandaction = NULL, *commandprompt = NULL;
1295
int commandpos = -1;
1296
int totalmillis = -1; // XXX Emscripten
1298
VARFP(maxcon, 10, 200, 1000, { while(conlines.length() > maxcon) delete[] conlines.pop().line; });
1300
#define CONSTRLEN 512
1302
void conline(int type, const char *sf) // add a line to the console buffer
1305
cl.line = conlines.length()>maxcon ? conlines.pop().line : newstring("", CONSTRLEN-1); // constrain the buffer size
1307
cl.outtime = totalmillis; // for how long to keep line on screen
1308
conlines.insert(0, cl);
1309
copystring(cl.line, sf, CONSTRLEN);
1312
void conoutfv(int type, const char *fmt, va_list args)
1314
static char buf[CONSTRLEN];
1315
vformatstring(buf, fmt, args, sizeof(char)*CONSTRLEN);
1317
//filtertext(buf, buf); // XXX Emscripten
1321
void conoutf(const char *fmt, ...)
1324
va_start(args, fmt);
1325
conoutfv(CON_INFO, fmt, args);
1329
void conoutf(int type, const char *fmt, ...)
1332
va_start(args, fmt);
1333
conoutfv(type, fmt, args);
1336
// XXX =======================================
1338
// XXX Emscripten: tools.cpp
1342
#define K (0x9908B0DFU)
1343
#define hiBit(u) ((u) & 0x80000000U)
1344
#define loBit(u) ((u) & 0x00000001U)
1345
#define loBits(u) ((u) & 0x7FFFFFFFU)
1346
#define mixBits(u, v) (hiBit(u)|loBits(v))
1348
static uint state[N+1];
1350
static int left = -1;
1352
void seedMT(uint seed)
1354
register uint x = (seed | 1U) & 0xFFFFFFFFU, *s = state;
1356
for(left=0, *s++=x, j=N; --j; *s++ = (x*=69069U) & 0xFFFFFFFFU);
1361
register uint *p0=state, *p2=state+2, *pM=state+M, s0, s1;
1363
if(left < -1) seedMT(time(NULL));
1364
left=N-1, next=state+1;
1365
for(s0=state[0], s1=state[1], j=N-M+1; --j; s0=s1, s1=*p2++) *p0++ = *pM++ ^ (mixBits(s0, s1) >> 1) ^ (loBit(s1) ? K : 0U);
1366
for(pM=state, j=M; --j; s0=s1, s1=*p2++) *p0++ = *pM++ ^ (mixBits(s0, s1) >> 1) ^ (loBit(s1) ? K : 0U);
1367
s1=state[0], *p0 = *pM ^ (mixBits(s0, s1) >> 1) ^ (loBit(s1) ? K : 0U);
1369
s1 ^= (s1 << 7) & 0x9D2C5680U;
1370
s1 ^= (s1 << 15) & 0xEFC60000U;
1371
return(s1 ^ (s1 >> 18));
1377
if(--left < 0) return(reloadMT());
1380
y ^= (y << 7) & 0x9D2C5680U;
1381
y ^= (y << 15) & 0xEFC60000U;
1382
return(y ^ (y >> 18));
1385
// XXX ==============================================
1387
// XXX Emscripten: main.cpp
1389
void fatal(const char *s, ...) // failure exit
1391
static int errors = 0;
1394
if(errors <= 2) // print up to one extra recursive error
1396
defvformatstring(msg,s,s);
1403
VARP(somevar, 0, 0, 1024);
1408
execute("somevar 9");
1409
execute("temp = (+ 22 $somevar)");
1410
execute("if (> $temp 30) [ temp = (+ $temp 1) ] [ temp = (* $temp 2) ]");
1411
execute("if (< $temp 30) [ temp = 0 ] [ temp = (+ $temp 1) ]");
1412
execute("echo [Temp is] $temp");
1413
printf("%d\n", getvar("somevar"));
1415
execute("push x 5");
1416
execute("push x 11");
1419
execute("greet = [ echo hello, $arg1 ]");
1420
execute("greet everyone");
1425
// XXX ===============================