/*      @(#)lcmd2.c     8.1 (Berkeley) 6/6/93   */
/*      $NetBSD: lcmd2.c,v 1.15 2008/12/29 01:53:35 christos Exp $      */

/*
 * Copyright (c) 1983, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Edward Wang at The University of California, Berkeley.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <string.h>
#include "defs.h"
#include "window_string.h"
#include "var.h"
#include "lcmd.h"
#include "alias.h"

int     printalias(void *, struct var *);
int     printvar(void *, struct var *);
char    *strtime(struct timeval *t);

void
l_iostat(struct value *v __unused, struct value *a __unused)
{
        struct ww *w;

        if ((w = openiwin(16, "IO Statistics")) == NULL) {
                error("Can't open statistics window: %s.", wwerror());
                return;
        }
        wwprintf(w, "ttflush\twrite\terror\tzero\tchar\n");
        wwprintf(w, "%d\t%d\t%d\t%d\t%d\n",
                wwnflush, wwnwr, wwnwre, wwnwrz, wwnwrc);
        wwprintf(w, "token\tuse\tbad\tsaving\ttotal\tbaud\n");
        wwprintf(w, "%d\t%d\t%d\t%d\t%d\t%d/%d (%.1f/%.1f)\n",
                wwntokdef, wwntokuse, wwntokbad, wwntoksave, wwntokc,
                wwntokc - wwntoksave ?
                        (int) ((float) wwbaud * wwntokc /
                                        (wwntokc - wwntoksave)) :
                        wwbaud,
                wwnwrc ? (int) ((float) wwbaud * (wwnwrc + wwntoksave) /
                                        wwnwrc) :
                        wwbaud,
                wwntokc - wwntoksave ?
                        (float) wwntokc / (wwntokc - wwntoksave) : 1.0,
                wwnwrc ? (float) (wwnwrc + wwntoksave) / wwnwrc : 1.0);
        wwprintf(w, "wwwrite\tattempt\tchar\n");
        wwprintf(w, "%d\t%d\t%d\n",
                wwnwwr, wwnwwra, wwnwwrc);
        wwprintf(w, "wwupdat\tline\tmiss\tscan\tclreol\tclreos\tmiss\tline\n");
        wwprintf(w, "%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\n",
                wwnupdate, wwnupdline, wwnupdmiss, wwnupdscan, wwnupdclreol,
                wwnupdclreos, wwnupdclreosmiss, wwnupdclreosline);
        wwprintf(w, "select\terror\tzero\n");
        wwprintf(w, "%d\t%d\t%d\n",
                wwnselect, wwnselecte, wwnselectz);
        wwprintf(w, "read\terror\tzero\tchar\tack\tnack\tstat\terrorc\n");
        wwprintf(w, "%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\n",
                wwnread, wwnreade, wwnreadz, wwnreadc, wwnreadack, wwnreadnack,
                wwnreadstat, wwnreadec);
        wwprintf(w, "ptyread\terror\tzero\tcontrol\tdata\tchar\n");
        wwprintf(w, "%d\t%d\t%d\t%d\t%d\t%d\n",
                wwnwread, wwnwreade, wwnwreadz,
                wwnwreadp, wwnwreadd, wwnwreadc);
        waitnl(w);
        closeiwin(w);
}

struct lcmd_arg arg_time[] = {
        { "who",        1,      ARG_STR },
        { NULL,         0,      0 }
};

void
l_time(struct value *v __unused, struct value *a)
{
        struct ww *w;
        struct rusage rusage;
        struct timeval timeval;

        if ((w = openiwin(8, "Timing and Resource Usage")) == NULL) {
                error("Can't open time window: %s.", wwerror());
                return;
        }

        (void) gettimeofday(&timeval, (struct timezone *)0);
        timersub(&timeval, &starttime, &timeval);
        (void) getrusage(a->v_type == V_STR
                        && str_match(a->v_str, "children", 1)
                ? RUSAGE_CHILDREN : RUSAGE_SELF, &rusage);

        wwprintf(w, "%-15s %-15s %-15s\n",
                "time", "utime", "stime");
        wwprintf(w, "%-15s ", strtime(&timeval));
        wwprintf(w, "%-15s ", strtime(&rusage.ru_utime));
        wwprintf(w, "%-15s\n", strtime(&rusage.ru_stime));
        wwprintf(w, "%-15s %-15s %-15s %-15s\n",
                "maxrss", "ixrss", "idrss", "isrss");
        wwprintf(w, "%-15ld %-15ld %-15ld %-15ld\n",
                rusage.ru_maxrss, rusage.ru_ixrss,
                rusage.ru_idrss, rusage.ru_isrss);
        wwprintf(w, "%-7s %-7s %-7s %-7s %-7s %-7s %-7s %-7s %-7s %-7s\n",
                "minflt", "majflt", "nswap", "inblk", "oublk",
                "msgsnd", "msgrcv", "nsigs", "nvcsw", "nivcsw");
        wwprintf(w, "%-7ld %-7ld %-7ld %-7ld %-7ld %-7ld %-7ld %-7ld %-7ld %-7ld\n",
                rusage.ru_minflt, rusage.ru_majflt, rusage.ru_nswap,
                rusage.ru_inblock, rusage.ru_oublock,
                rusage.ru_msgsnd, rusage.ru_msgrcv, rusage.ru_nsignals,
                rusage.ru_nvcsw, rusage.ru_nivcsw);

        waitnl(w);
        closeiwin(w);
}

char *
strtime(struct timeval *t)
{
        char fill = 0;
        static char buf[20];
        char *p = buf;

        if (t->tv_sec > 60*60) {
                (void) sprintf(p, "%ld:", (long int)t->tv_sec / (60*60));
                while (*p++)
                        ;
                p--;
                t->tv_sec %= 60*60;
                fill++;
        }
        if (t->tv_sec > 60) {
                (void) sprintf(p, fill ? "%02lld:" : "%lld:",
                    (long long)t->tv_sec / 60);
                while (*p++)
                        ;
                p--;
                t->tv_sec %= 60;
                fill++;
        }
        (void) sprintf(p, fill ? "%02lld.%02ld" : "%lld.%02ld",
                (long long)t->tv_sec, (long)t->tv_usec / 10000);
        return buf;
}

void
l_list(struct value *v __unused, struct value *a __unused)
{
        struct ww *w, *wp;
        int i;
        int n;

        for (n = 0, i = 0; i < NWINDOW; i++)
                if (window[i] != 0)
                        n++;
        if (n == 0) {
                error("No windows.");
                return;
        }
        if ((w = openiwin(n + 2, "Windows")) == NULL) {
                error("Can't open listing window: %s.", wwerror());
                return;
        }
        for (i = 0; i < NWINDOW; i++) {
                if ((wp = window[i]) == NULL)
                        continue;
                wwprintf(w, "%c %c %-13s %-.*s\n",
                        wp == selwin ? '+' : (wp == lastselwin ? '-' : ' '),
                        i + '1',
                        wp->ww_state == WWS_HASPROC ? "" : "(No process)",
                        wwncol - 20,
                        wp->ww_label ? wp->ww_label : "(No label)");
        }
        waitnl(w);
        closeiwin(w);
}

void
l_variable(struct value *v __unused, struct value *a __unused)
{
        struct ww *w;

        if ((w = openiwin(wwnrow - 3, "Variables")) == NULL) {
                error("Can't open variable window: %s.", wwerror());
                return;
        }
        if (var_walk(printvar, (void *)w) >= 0)
                waitnl(w);
        closeiwin(w);
}

int
printvar(void *vw, struct var *r)
{
        struct ww *w = vw;
        if (more(w, 0) == 2)
                return -1;
        wwprintf(w, "%16s    ", r->r_name);
        switch (r->r_val.v_type) {
        case V_STR:
                wwprintf(w, "%s\n", r->r_val.v_str);
                break;
        case V_NUM:
                wwprintf(w, "%d\n", r->r_val.v_num);
                break;
        case V_ERR:
                wwprintf(w, "ERROR\n");
                break;
        }
        return 0;
}

struct lcmd_arg arg_def_shell[] = {
        { "",   0,              ARG_ANY|ARG_LIST },
        { NULL, 0,              0 }
};

void
l_def_shell(struct value *v, struct value *a)
{
        char **pp;
        struct value *vp;

        if (a->v_type == V_ERR) {
                if ((v->v_str = str_cpy(default_shellfile)) != 0)
                        v->v_type = V_STR;
                return;
        }
        if ((v->v_str = default_shellfile)) {
                v->v_type = V_STR;
                for (pp = default_shell + 1; *pp; pp++) {
                        str_free(*pp);
                        *pp = NULL;
                }
        }
        for (pp = default_shell, vp = a;
             vp->v_type != V_ERR &&
             pp < &default_shell[sizeof default_shell/sizeof *default_shell-1];
             pp++, vp++)
                if ((*pp = vp->v_type == V_STR ?
                     str_cpy(vp->v_str) : str_itoa(vp->v_num)) == NULL) {
                        /* just leave default_shell[] the way it is */
                        p_memerror();
                        break;
                }
        if ((default_shellfile = *default_shell)) {
                if ((*default_shell = strrchr(default_shellfile, '/')))
                        (*default_shell)++;
                else
                        *default_shell = default_shellfile;
        }
}

struct lcmd_arg arg_alias[] = {
        { "",   0,              ARG_STR },
        { "",   0,              ARG_STR|ARG_LIST },
        { NULL, 0,              0 }
};

void
l_alias(struct value *v, struct value *a)
{
        if (a->v_type == V_ERR) {
                struct ww *w;

                if ((w = openiwin(wwnrow - 3, "Aliases")) == NULL) {
                        error("Can't open alias window: %s.", wwerror());
                        return;
                }
                if (alias_walk(printalias, (void *)w) >= 0)
                        waitnl(w);
                closeiwin(w);
        } else {
                struct alias *ap = NULL;

                if ((ap = alias_lookup(a->v_str))) {
                        if ((v->v_str = str_cpy(ap->a_buf)) == 0) {
                                p_memerror();
                                return;
                        }
                        v->v_type = V_STR;
                }
                if (a[1].v_type == V_STR) {
                        struct value *vp;
                        char *p, *q;
                        char *str;
                        int n;

                        for (n = 0, vp = a + 1; vp->v_type != V_ERR; vp++, n++)
                                for (p = vp->v_str; *p; p++, n++)
                                        ;
                        if ((str = str_alloc(n)) == NULL) {
                                p_memerror();
                                return;
                        }
                        for (q = str, vp = a + 1; vp->v_type != V_ERR;
                             vp++, q[-1] = ' ')
                                for (p = vp->v_str; (*q++ = *p++);)
                                        ;
                        q[-1] = 0;
                        if ((ap = alias_set(a[0].v_str, (char *)0)) == NULL) {
                                p_memerror();
                                str_free(str);
                                return;
                        }
                        ap->a_buf = str;
                }
        }
}

int
printalias(void *vw, struct var *a)
{
        struct ww *w = vw;
        if (more(w, 0) == 2)
                return -1;
        wwprintf(w, "%16s    %s\n", a->a_name, a->a_buf);
        return 0;
}

struct lcmd_arg arg_unalias[] = {
        { "alias",      1,      ARG_STR },
        { NULL,         0,      0 }
};

void
l_unalias(struct value *v, struct value *a)
{
        if (a->v_type == ARG_STR)
                v->v_num = alias_unset(a->v_str);
        v->v_type = V_NUM;
}

struct lcmd_arg arg_echo[] = {
        { "window",     1,      ARG_NUM },
        { "",           0,      ARG_ANY|ARG_LIST },
        { NULL,         0,      0 }
};

void
l_echo(struct value *v __unused, struct value *a)
{
        char buf[20];
        struct ww *w;

        if ((w = vtowin(a++, selwin)) == NULL)
                return;
        while (a->v_type != V_ERR) {
                if (a->v_type == V_NUM) {
                        (void) sprintf(buf, "%d", a->v_num);
                        (void) wwwrite(w, buf, strlen(buf));
                } else
                        (void) wwwrite(w, a->v_str, strlen(a->v_str));
                if ((++a)->v_type != V_ERR)
                        (void) wwwrite(w, " ", 1);
        }
        (void) wwwrite(w, "\r\n", 2);
}