int exec_cmd(char *str,int len)
{
if(db)printf("\nexec cmd called for %s, l=%d",str,len);
printf("\n");
trunc_str(&str,&len);
if(len>0)
{
char *p=strchr(str,':'),*tmp,**args=(char **)malloc(8*sizeof(char *));
char *s=str;
if(p!=strrchr(str,':'))
{
printf("\nERROR\n multiple occurances of ':' found");
return 0;
}
if(p!=0)
{
int l=p-s,arg_c;
int (*cmd_mtch)(char *, int);
trunc_str(&s,&l);
tmp=(char *)malloc(l*sizeof(char));
void *cmd_search;
strncpy(tmp,s,l);
arg_c=parse_ssv(tmp,args);
cmd_search=search_node(cmd_tree,args[0]);
cmd_mtch = cmd_search ? (int(*)(char *, int))cmd_search : 0;
if(cmd_mtch)
{
if(db)printf("\nfn matched");
cmd_mtch(p+1,len-(p-str)-1);
}
else if(arg_c==1)
{
var *var_tmp=add_var(args[0]);
if(!var_tmp->addr)var_tmp->addr=( node *)malloc(sizeof( node));
store_fn(p+1,len-(p-str)-1,var_tmp->addr);
}
return 1;
}
else
{
store_fn( str, len, fnc );
printf("\n-----------------------------------------------\n");
printf("\nThe soln is %lf",fnc->method->eval_v(fnc));
printf("\n-----------------------------------------------\n");
return 1;
}
}
return 0;
}
char *subs_dollar(char *cmd, t_history *list)
{
if (list)
cmd = trunc_str(list->command);
else
return (NULL);
return (cmd);
}
int exec_cmd_eval(char *t,int l_t)
{
trunc_str(&t,&l_t);
char *tmp=(char*)malloc(l_t*sizeof(char));
strcpy(tmp,t);
var *var_ptr=add_var(tmp);
printf("\n\t-----\n%s = %lf\n\t-----\n",tmp,var_ptr->addr->method->eval_v(var_ptr->addr));
return 0;
}
/**
* \fn order_install
*
* order the install list according to dependency level
* here we only rely on basic level given by pkg_summary, the only drawback
* is that pkg_add will install direct dependencies, giving a "failed,
* package already installed"
*/
Plisthead *
order_install(Plisthead *impacthead)
{
Plisthead *ordtreehead;
Pkglist *pimpact, *pdp, *pi_dp = NULL;
int i, maxlevel = 0;
char tmpcheck[BUFSIZ];
/* record higher dependency level on impact list */
SLIST_FOREACH(pimpact, impacthead, next) {
if ((pimpact->action == TOUPGRADE ||
pimpact->action == TOINSTALL) &&
pimpact->level > maxlevel)
maxlevel = pimpact->level;
}
ordtreehead = init_head();
for (i = 0; i <= maxlevel; i++) {
SLIST_FOREACH(pimpact, impacthead, next) {
if ((pimpact->action == TOUPGRADE ||
pimpact->action == TOINSTALL) &&
pimpact->level == i) {
if (pkg_in_impact(ordtreehead, pimpact->full))
continue;
pdp = malloc_pkglist(DEPTREE);
pdp->computed = pimpact->action; /* XXX: ugly*/
XSTRDUP(pdp->depend, pimpact->full);
pdp->name = NULL; /* safety */
pdp->level = pimpact->level;
/* record package size for download check */
pdp->file_size = pimpact->file_size;
/* check for pkg_install upgrade */
strcpy(tmpcheck, pimpact->full);
trunc_str(tmpcheck, '-', STR_BACKWARD);
/* match on pkg_install */
if (strcmp(tmpcheck, PKG_INSTALL) == 0) {
pi_upgrade = 1;
/* backup pdp for future insertion */
pi_dp = pdp;
} else
SLIST_INSERT_HEAD(ordtreehead,
pdp, next);
} /* action == TOINSTALL */
} /* SLIST_FOREACH pimpact */
} /* for i < maxlevel */
/* pkg_install is to be upgraded, make it first */
if (pi_upgrade && pi_dp != NULL)
SLIST_INSERT_HEAD(ordtreehead, pi_dp, next);
return ordtreehead;
}
int exec_cmd_mat(char *t,int l_t)
{
node n,n1;
trunc_str(&t,&l_t);
store_fn(t,l_t,&n);
n.method->eval_n(&n,&n1);
if(n1.node_type==ar_mat)
{
printf("\n-----------------------------------------------\n");
print_mat(n1.d.mat_ptr);
printf("\n-----------------------------------------------\n");
}
return 0;
}
int exec_cmd_plot(char *t,int l_t)
{
char **args=(char **)malloc(8*sizeof(char *));
int c;
trunc_str(&t,&l_t);
parse_args(t,l_t,args,&c);
node n,a,b;
store_fn(args[0],strlen(args[0]),&n);
store_fn(args[2],strlen(args[2]),&a);
store_fn(args[3],strlen(args[3]),&b);
plot(&n,add_var(args[1]),a.method->eval_v(&a),b.method->eval_v(&b),atoi(args[4]));
//printf("\n-----------------------------------------------\n");
//printf("%s=%f",args[1],result);
//printf("\n-----------------------------------------------\n");
return 0;
}
int exec_cmd_newton(char *t,int l_t)
{
//nwt
char **args=(char **)malloc(8*sizeof(char *));
int c;
trunc_str(&t,&l_t);
parse_args(t,l_t,args,&c);
node n,z;
store_fn(args[0],strlen(args[0]),&n);
store_fn(args[2],strlen(args[2]),&z);
double result = newton(&n,add_var(args[1]),z.method->eval_v(&z));
printf("\n-----------------------------------------------\n");
printf("%s=%f",args[1],result);
printf("\n-----------------------------------------------\n");
return 0;
}
int exec_cmd_simpson3(char *t,int l_t)
{
//sm3
char **args=(char **)malloc(8*sizeof(char *));
int c;
trunc_str(&t,&l_t);
parse_args(t,l_t,args,&c);
printf(
"\nIntegrating (%s)d%s using simpson 3/8th rule from %s to %s using %s nodes:\n-\t-\t-\n"
,args[0],args[1],args[2],args[3],args[4]
);
node n,a,b;
store_fn(args[0],strlen(args[0]),&n);
store_fn(args[2],strlen(args[2]),&a);
store_fn(args[3],strlen(args[3]),&b);
double result = simpson3(&n,add_var(args[1]),a.method->eval_v(&a),b.method->eval_v(&b),atoi(args[4]));
if(v)printf("\nInteration (%s)d%s (%lf-%lf)=%lf",args[0],args[1],a.method->eval_v(&a),b.method->eval_v(&b),result);
printf("\n-\t-\t-\n");
return 0;
}
/**
* find dependency deepness for package removal and record it to pdp->level
*/
static void
remove_dep_deepness(Plisthead *deptreehead)
{
char *depname;
Pkglist *pdp;
Plisthead *lvldeptree;
/* get higher recursion level */
SLIST_FOREACH(pdp, deptreehead, next) {
if (pdp->level == -1) { /* unique package, just return */
pdp->level = 0;
return;
}
pdp->level = 1;
if (pdp->depend == NULL)
/* there's something wrong with database's record,
* probably a mistaken dependency
*/
continue;
/* depname received from deptreehead is in package format */
XSTRDUP(depname, pdp->depend);
trunc_str(depname, '-', STR_BACKWARD);
lvldeptree = init_head();
full_dep_tree(depname, LOCAL_REVERSE_DEPS, lvldeptree);
if (!SLIST_EMPTY(lvldeptree))
pdp->level = SLIST_FIRST(lvldeptree)->level + 1;
XFREE(depname);
free_pkglist(&lvldeptree, DEPTREE);
#if 0
printf("%s -> %d\n", pdp->depend, pdp->level);
#endif
}
}
int exec_cmd_RK(char *t,int l_t)
{
//RK
char **args=(char **)malloc(8*sizeof(char *));
int c;
trunc_str(&t,&l_t);
parse_args(t,l_t,args,&c);
printf("solving initial value problem\n-\t-\t-\n");
node f,x0,y0,x1;
store_fn(args[0],strlen(args[0]),&f);
store_fn(args[3],strlen(args[3]),&x0);
store_fn(args[4],strlen(args[4]),&y0);
store_fn(args[5],strlen(args[5]),&x1);
double result = RK (
&f, add_var(args[1]), add_var(args[2]),x0.method->eval_v(&x0),
y0.method->eval_v(&y0),x1.method->eval_v(&x1),atoi(args[6])
);
printf("\n%s(%f)=%f",args[2],x1.method->eval_v(&x1),result);
printf("\n-\t-\t-\n");
return 0;
}
/* find dependency deepness for upgrade and record it to pimpact->level */
static void
upgrade_dep_deepness(Plisthead *impacthead)
{
char *pkgname;
Pkglist *pimpact;
Plisthead *lvldeptree;
/* get higher recursion level */
SLIST_FOREACH(pimpact, impacthead, next) {
if (pimpact->level == -1) { /* unique package, just return */
pimpact->level = 0;
return;
}
/* only deal with TOUPGRADE and TOREMOVE */
if (pimpact->action == TOINSTALL)
continue;
pimpact->level = 1;
/* depname received from impact is in full package format */
XSTRDUP(pkgname, pimpact->full);
trunc_str(pkgname, '-', STR_BACKWARD);
lvldeptree = init_head();
full_dep_tree(pkgname, LOCAL_REVERSE_DEPS, lvldeptree);
if (!SLIST_EMPTY(lvldeptree))
pimpact->level = SLIST_FIRST(lvldeptree)->level + 1;
#if 0
printf("%s (%s) -> %d\n",
pimpact->full, pkgname, pimpact->level);
#endif
XFREE(pkgname);
free_pkglist(&lvldeptree, DEPTREE);
}
}
static void
break_depends(Plisthead *impacthead)
{
Pkglist *rmimpact, *pimpact;
Plisthead *rdphead, *fdphead;
Pkglist *rdp, *fdp;
char *pkgname, *rpkg;
int dep_break, exists;
SLIST_FOREACH(pimpact, impacthead, next) {
if (pimpact->old == NULL) /* DONOTHING or TOINSTALL */
continue;
rdphead = init_head();
XSTRDUP(pkgname, pimpact->old);
trunc_str(pkgname, '-', STR_BACKWARD);
/* fetch old package reverse dependencies */
full_dep_tree(pkgname, LOCAL_REVERSE_DEPS, rdphead);
XFREE(pkgname);
/* browse reverse dependencies */
SLIST_FOREACH(rdp, rdphead, next) {
exists = 0;
/* check if rdp was already on impact list */
SLIST_FOREACH(rmimpact, impacthead, next)
if (strcmp(rmimpact->depend, rdp->depend) == 0) {
exists = 1;
break;
}
if (exists)
continue;
fdphead = init_head();
/*
* reverse dependency is a full package name,
* use it and strip it
*/
XSTRDUP(rpkg, rdp->depend);
trunc_str(rpkg, '-', STR_BACKWARD);
/* fetch dependencies for rdp */
full_dep_tree(rpkg, DIRECT_DEPS, fdphead);
/* initialize to broken dependency */
dep_break = 1;
/* empty full dep tree, this can't happen in normal situation.
* If it does, that means that the reverse dependency we're
* analyzing has no direct dependency.
* Such a situation could occur if the reverse dependency is not on
* the repository anymore, leading to no information regarding this
* package.
* So we will check if local package dependencies are satisfied by
* our newly upgraded packages.
*/
if (SLIST_EMPTY(fdphead)) {
free_pkglist(&fdphead, DEPTREE);
fdphead = init_head();
full_dep_tree(rpkg, LOCAL_DIRECT_DEPS, fdphead);
}
XFREE(rpkg);
/*
* browse dependencies for rdp and see if
* new package to be installed matches
*/
SLIST_FOREACH(fdp, fdphead, next) {
if (pkg_match(fdp->depend, pimpact->full)) {
dep_break = 0;
break;
}
}
free_pkglist(&fdphead, DEPTREE);
if (!dep_break)
continue;
/* dependency break, insert rdp in remove-list */
rmimpact = malloc_pkglist(IMPACT);
XSTRDUP(rmimpact->depend, rdp->depend);
XSTRDUP(rmimpact->full, rdp->depend);
XSTRDUP(rmimpact->old, rdp->depend);
rmimpact->action = TOREMOVE;
rmimpact->level = 0;
SLIST_INSERT_HEAD(impacthead, rmimpact, next);
}
free_pkglist(&rdphead, DEPTREE);
}
