vectors.c

ngspice又一个电子CAD仿真软件代码.功能更全

/**********
Copyright 1990 Regents of the University of California.  All rights reserved.
Author: 1985 Wayne A. Christopher, U. C. Berkeley CAD Group 
$Id: vectors.c,v 1.8 2005/05/26 19:29:52 sjborley Exp $
**********/

/*
 * Routines for dealing with the vector database.
 */

#include <ngspice.h>
#include <cpdefs.h>
#include <ftedefs.h>
#include <dvec.h>
#include <sim.h>

#include "circuits.h"
#include "completion.h"
#include "variable.h"
#include "vectors.h"
#include "plotting/plotting.h"

#ifdef XSPICE
/* gtri - begin - add function prototype for EVTfindvec */
struct dvec *EVTfindvec(char *node);
/* gtri - end   - add function prototype for EVTfindvec */
#endif

/* Find a named vector in a plot. We are careful to copy the vector if
 * v_link2 is set, because otherwise we will get screwed up.  */
static struct dvec *
findvec(char *word, struct plot *pl)
{
    struct dvec *d, *newv = NULL, *end = NULL, *v;
    char buf[BSIZE_SP];

    if (pl == NULL)
        return (NULL);

    if (cieq(word, "all")) {
        for (d = pl->pl_dvecs; d; d = d->v_next) {
            if (d->v_flags & VF_PERMANENT) {
                if (d->v_link2) {
                    v = vec_copy(d);
                    vec_new(v);
                } else
                    v = d;
                if (end)
                    end->v_link2 = v;
                else
                    newv = v;
                end = v;
            }
        }
        return (newv);
    }

    for (d = pl->pl_dvecs; d; d = d->v_next)
        if (cieq(word, d->v_name) && (d->v_flags & VF_PERMANENT))
            break;
    if (!d) {
        (void) sprintf(buf, "v(%s)", word);
        for (d = pl->pl_dvecs; d; d = d->v_next)
            if (cieq(buf, d->v_name) && (d->v_flags & VF_PERMANENT))
                break;
    }
#ifdef XSPICE
/* gtri - begin - Add processing for getting event-driven vector */

    if(!d)
      d = EVTfindvec(word);

/* gtri - end   - Add processing for getting event-driven vector */
#endif
    if (d && d->v_link2) {
        d = vec_copy(d);
        vec_new(d);
    }

    return (d);
}


/* If there are imbedded numeric strings, compare them numerically, not
 * alphabetically.
 */
static int
namecmp(const void *a, const void *b)
{
    int i, j;

    char *s = (char *) a;
    char *t = (char *) b;
    for (;;) {
        while ((*s == *t) && !isdigit(*s) && *s)
            s++, t++;
        if (!*s)
            return (0);
        if ((*s != *t) && (!isdigit(*s) || !isdigit(*t)))
            return (*s - *t);
        
        /* The beginning of a number... Grab the two numbers and then
         * compare them...  */
        for (i = 0; isdigit(*s); s++)
            i = i * 10 + *s - '0';
        for (j = 0; isdigit(*t); t++)
            j = j * 10 + *t - '0';
        
        if (i != j)
            return (i - j);
    }
}


static int
veccmp(const void *a, const void *b)
{
    int i;
    struct dvec **d1 = (struct dvec **) a;
    struct dvec **d2 = (struct dvec **) b;

    if ((i = namecmp((*d1)->v_plot->pl_typename,
            (*d2)->v_plot->pl_typename)) != 0)
        return (i);
    return (namecmp((*d1)->v_name, (*d2)->v_name));
}


/* Sort all the vectors in d, first by plot name and then by vector
 * name.  Do the right thing with numbers.  */
static struct dvec *
sortvecs(struct dvec *d)
{
    struct dvec **array, *t;
    int i, j;

    for (t = d, i = 0; t; t = t->v_link2)
        i++;
    if (i < 2)
        return (d);
    array = (struct dvec **) tmalloc(i * sizeof (struct dvec *));
    for (t = d, i = 0; t; t = t->v_link2)
        array[i++] = t;
    
    qsort((char *) array, i, sizeof (struct dvec *), veccmp);

    /* Now string everything back together... */
    for (j = 0; j < i - 1; j++)
        array[j]->v_link2 = array[j + 1];
    array[j]->v_link2 = NULL;
    d = array[0];
    tfree(array);
    return (d);
}


/* Load in a rawfile. */
void
ft_loadfile(char *file)
{
    struct plot *pl, *np, *pp;

    fprintf(cp_out, "Loading raw data file (\"%s\") . . . ", file);
        pl = raw_read(file);
    if (pl)
        fprintf(cp_out, "done.\n");
    else
        fprintf(cp_out, "no data read.\n");

    /* This is a minor annoyance -- we should reverse the plot list so
     * they get numbered in the correct order.
     */
    for (pp = pl, pl = NULL; pp; pp = np) {
        np = pp->pl_next;
        pp->pl_next = pl;
        pl = pp;
    }
    for (; pl; pl = np) {
        np = pl->pl_next;
        plot_add(pl);
        /* Don't want to get too many "plot not written" messages. */
        pl->pl_written = TRUE;
    }
    plot_num++;
    plotl_changed = TRUE;
    return;
}

void
plot_add(struct plot *pl)
{
    struct dvec *v;
    struct plot *tp;
    char *s, buf[BSIZE_SP];

    fprintf(cp_out, "Title:  %s\nName: %s\nDate: %s\n\n", pl->pl_title,
        pl->pl_name, pl->pl_date);
    
    if (plot_cur)
        plot_cur->pl_ccom = cp_kwswitch(CT_VECTOR, pl->pl_ccom);
    
    for (v = pl->pl_dvecs; v; v = v->v_next)
        cp_addkword(CT_VECTOR, v->v_name);
    cp_addkword(CT_VECTOR, "all");

    if (!(s = ft_plotabbrev(pl->pl_name)))
        s = "unknown";
    do {
        (void) sprintf(buf, "%s%d", s, plot_num);
        for (tp = plot_list; tp; tp = tp->pl_next)
            if (cieq(tp->pl_typename, buf)) {
                plot_num++;
                break;
            }
    } while (tp);

    pl->pl_typename = copy(buf);
    plot_new(pl);
    cp_addkword(CT_PLOT, buf);
    pl->pl_ccom = cp_kwswitch(CT_VECTOR, (char *) NULL);
    plot_setcur(pl->pl_typename);

    return;
}

/* Remove a vector from the database, if it is there. */

void
vec_remove(char *name)
{
    struct dvec *ov;

    for (ov = plot_cur->pl_dvecs; ov; ov = ov->v_next) {
        if (cieq(name, ov->v_name) && (ov->v_flags & VF_PERMANENT))
            break;
    }
    if (!ov)
        return;

    ov->v_flags &= ~VF_PERMANENT;

    /* Remove from the keyword list. */
    cp_remkword(CT_VECTOR, name);
    return;
}

/* Get a vector by name. This deals with v(1), etc. almost properly. Also,
 * it checks for pre-defined vectors.
 */

struct dvec *
vec_fromplot(char *word, struct plot *plot)
{
    struct dvec *d;
    char buf[BSIZE_SP], buf2[BSIZE_SP], cc, *s;

    d = findvec(word, plot);
    if (!d) {
        (void) strcpy(buf, word);
        for (s = buf; *s; s++)
            if (isupper(*s))
                *s = tolower(*s);
        d = findvec(buf, plot);
    }
    if (!d) {
        (void) strcpy(buf, word);
        for (s = buf; *s; s++)
            if (islower(*s))
                *s = *s - 'a' + 'A';
        d = findvec(buf, plot);
    }

    /* scanf("%c(%s)" doesn't do what it should do. ) */
    if (!d && (sscanf(word, "%c(%s", /* ) */ &cc, buf) == 2) &&
        /* ( */ ((s =strrchr(buf, ')')) != NULL) &&
            (*(s + 1) == '\0')) {
        *s = '\0';
        if (prefix("i(", /* ) */ word)) {
            /* Spice dependency... */
            (void) sprintf(buf2, "%s#branch", buf);
            (void) strcpy(buf, buf2);
        }
        d = findvec(buf, plot);
    }

    return (d);
}

/* This is the main lookup routine for names. The possible types of names are:
 *  name        An ordinary vector.
 *  plot.name   A vector from a particular plot.
 *  @device[parm]   A device parameter.
 *  @model[parm]    A model parameter.
 *  @param      A circuit parameter.
 * For the @ cases, we construct a dvec with length 1 to hold the value.
 * In the other two cases, either the plot or the name can be "all", a
 * wildcard.
 * The vector name may have imbedded dots -- if the first component is a plot
 * name, it is considered the plot, otherwise the current plot is used.
 */

#define SPECCHAR '@'

struct dvec *
vec_get(char *word)
{
    struct dvec *d, *end = NULL, *newv = NULL;
    struct plot *pl;
    char buf[BSIZE_SP], *s, *wd, *whole, *name = NULL, *param;
    int i = 0;
    struct variable *vv;

    wd = word = copy(word);     /* Gets mangled below... */

    if (index(word, '.')) {
        /* Snag the plot... */
        for (i = 0, s = word; *s != '.'; i++, s++)
            buf[i] = *s;
        buf[i] = '\0';
        if (cieq(buf, "all")) {
            word = ++s;
            pl = NULL;  /* NULL pl signifies a wildcard. */
        } else {
            for (pl = plot_list; pl && !plot_prefix(buf, 
                    pl->pl_typename); pl = pl->pl_next)
                ;
            if (pl) {
                word = ++s;
            } else {
                /* This used to be an error... */
                pl = plot_cur;
            }
        }
    } else
        pl = plot_cur;

    if (pl) {
        d = vec_fromplot(word, pl);
        if (!d)
            d = vec_fromplot(word, &constantplot);
    } else {
        for (pl = plot_list; pl; pl = pl->pl_next) {
            if (cieq(pl->pl_typename, "const"))
                continue;
            d = vec_fromplot(word, pl);
            if (d) {
                if (end)
                    end->v_link2 = d;
                else
                    newv = d;
                for (end = d; end->v_link2; end = end->v_link2)
                    ;
            }
        }
        d = newv;
        if (!d) {
            fprintf(cp_err, 
                    "Error: plot wildcard (name %s) matches nothing\n",
                    word);
            tfree(wd); /* MW. I don't want core leaks here */
            return (NULL);
        }
    }
    
    if (!d && (*word == SPECCHAR)) {
        /* This is a special quantity... */
        if (ft_nutmeg) {
            fprintf(cp_err,
                    "Error: circuit parameters only available with spice\n");
            tfree(wd); 	/* MW. Memory leak fixed again */       		
            return (NULL); /* va: use NULL */
        }
        
        whole=copy(word);
        name = ++word;        
        for (param = name; *param && (*param != '['); param++)
            ;		
            
        if (*param) {
            *param++ = '\0';
            for (s = param; *s && *s != ']'; s++)
                ;
            *s = '\0';
        } else
            param = NULL;
            
	
	if (ft_curckt) {
	
	    vv = (*if_getparam)(ft_curckt->ci_ckt, &name, param, 0, 0);
	    if (!vv) {
	        tfree(whole);
		tfree(wd);
		return (NULL);
	    }
	} else {
            fprintf(cp_err, "Error: No circuit loaded.\n");
	    tfree(whole);
	    tfree(wd);
	    return (NULL);
	}

        d = alloc(struct dvec);
	ZERO(d, struct dvec);
        d->v_name = copy(whole); /* MW. The same as word before */
        d->v_type = SV_NOTYPE;
        d->v_flags |= VF_REAL;  /* No complex values yet... */
        d->v_realdata = (double *) tmalloc(sizeof (double));
        d->v_length = 1;
        *d->v_realdata = vv->va_real;
        
        tfree(vv->va_name);
        tfree(vv); /* va: tfree vv->va_name and vv (avoid memory leakages) */
        tfree(wd);	
        vec_new(d);
	tfree(whole);
        return (d);
    }

    tfree(wd);
    return (sortvecs(d));
}

/* Execute the commands for a plot. This is done whenever a plot becomes
 * the current plot.
 */

void
plot_docoms(wordlist *wl)
{
    bool inter;

    inter = cp_interactive;
    cp_interactive = FALSE;
    while (wl) {
        (void) cp_evloop(wl->wl_word);
        wl = wl->wl_next;
    }
    cp_resetcontrol();
    cp_interactive = inter;
    return;
}

/* Create a copy of a vector. */

struct dvec *
vec_copy(struct dvec *v)
{
    struct dvec *nv;
    int i;
    
    if (!v)
        return (NULL);

    nv = alloc(struct dvec);