/* NetHack 3.6	pager.c	$NHDT-Date: 1574722864 2019/11/25 23:01:04 $  $NHDT-Branch: NetHack-3.6 $:$NHDT-Revision: 1.162 $ */
/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/*-Copyright (c) Robert Patrick Rankin, 2018. */
/* NetHack may be freely redistributed.  See license for details. */

/* JNetHack Copyright */
/* (c) Issei Numata, Naoki Hamada, Shigehiro Miyashita, 1994-2000  */
/* For 3.4-, Copyright (c) SHIRAKATA Kentaro, 2002-2020            */
/* JNetHack may be freely redistributed.  See license for details. */

/* This file contains the command routines dowhatis() and dohelp() and */
/* a few other help related facilities */

#include "hack.h"
#include "dlb.h"

STATIC_DCL boolean FDECL(is_swallow_sym, (int));
STATIC_DCL int FDECL(append_str, (char *, const char *));
STATIC_DCL void FDECL(look_at_object, (char *, int, int, int));
STATIC_DCL void FDECL(look_at_monster, (char *, char *,
                                        struct monst *, int, int));
STATIC_DCL struct permonst *FDECL(lookat, (int, int, char *, char *));
STATIC_DCL void FDECL(checkfile, (char *, struct permonst *,
                                  BOOLEAN_P, BOOLEAN_P, char *));
STATIC_DCL void FDECL(look_all, (BOOLEAN_P,BOOLEAN_P));
STATIC_DCL void FDECL(do_supplemental_info, (char *, struct permonst *,
                                             BOOLEAN_P));
STATIC_DCL void NDECL(whatdoes_help);
STATIC_DCL void NDECL(docontact);
STATIC_DCL void NDECL(dispfile_help);
STATIC_DCL void NDECL(dispfile_shelp);
STATIC_DCL void NDECL(dispfile_optionfile);
STATIC_DCL void NDECL(dispfile_license);
STATIC_DCL void NDECL(dispfile_debughelp);
STATIC_DCL void NDECL(hmenu_doextversion);
STATIC_DCL void NDECL(hmenu_dohistory);
STATIC_DCL void NDECL(hmenu_dowhatis);
STATIC_DCL void NDECL(hmenu_dowhatdoes);
STATIC_DCL void NDECL(hmenu_doextlist);
#ifdef PORT_HELP
extern void NDECL(port_help);
#endif

/* Returns "true" for characters that could represent a monster's stomach. */
STATIC_OVL boolean
is_swallow_sym(c)
int c;
{
    int i;

    for (i = S_sw_tl; i <= S_sw_br; i++)
        if ((int) showsyms[i] == c)
            return TRUE;
    return FALSE;
}

/*
 * Append new_str to the end of buf if new_str doesn't already exist as
 * a substring of buf.  Return 1 if the string was appended, 0 otherwise.
 * It is expected that buf is of size BUFSZ.
 */
STATIC_OVL int
append_str(buf, new_str)
char *buf;
const char *new_str;
{
    int space_left; /* space remaining in buf */

    if (strstri(buf, new_str))
        return 0;

    space_left = BUFSZ - strlen(buf) - 1;
    if (space_left < 1)
        return 0;
#if 0 /*JP:T*/
    (void) strncat(buf, " or ", space_left);
    (void) strncat(buf, new_str, space_left - 4);
#else
    (void) strncat(buf, "または", space_left);
    (void) strncat(buf, new_str, space_left - 6);
#endif
    return 1;
}

/* shared by monster probing (via query_objlist!) as well as lookat() */
char *
self_lookat(outbuf)
char *outbuf;
{
    char race[QBUFSZ];

    /* include race with role unless polymorphed */
    race[0] = '\0';
    if (!Upolyd)
/*JP
        Sprintf(race, "%s ", urace.adj);
*/
        Sprintf(race, "%s", urace.adj);
#if 0 /*JP:T*/
    Sprintf(outbuf, "%s%s%s called %s",
            /* being blinded may hide invisibility from self */
            (Invis && (senseself() || !Blind)) ? "invisible " : "", race,
            mons[u.umonnum].mname, plname);
#else
    Sprintf(outbuf, "%s%s%sという名の%s",
            (Invis && (senseself() || !Blind)) ? "姿の見えない" : "", race,
            plname,
            mons[u.umonnum].mname);
#endif
    if (u.usteed)
/*JP
        Sprintf(eos(outbuf), ", mounted on %s", y_monnam(u.usteed));
*/
        Sprintf(eos(outbuf), "，%sに乗っている", y_monnam(u.usteed));
    if (u.uundetected || (Upolyd && U_AP_TYPE))
        mhidden_description(&youmonst, FALSE, eos(outbuf));
    return outbuf;
}

/* describe a hidden monster; used for look_at during extended monster
   detection and for probing; also when looking at self */
void
mhidden_description(mon, altmon, outbuf)
struct monst *mon;
boolean altmon; /* for probing: if mimicking a monster, say so */
char *outbuf;
{
    struct obj *otmp;
    boolean fakeobj, isyou = (mon == &youmonst);
    int x = isyou ? u.ux : mon->mx, y = isyou ? u.uy : mon->my,
        glyph = (level.flags.hero_memory && !isyou) ? levl[x][y].glyph
                                                    : glyph_at(x, y);
#if 1 /*JP*/
    char suffixbuf[QBUFSZ];
#endif

    *outbuf = '\0';
#if 1 /*JP*/
    suffixbuf[0] = '\0';
#endif
    if (M_AP_TYPE(mon) == M_AP_FURNITURE
        || M_AP_TYPE(mon) == M_AP_OBJECT) {
#if 0 /*JP*/
        Strcpy(outbuf, ", mimicking ");
#else /*後で追加する*/
        Strcpy(suffixbuf, "のふりをしている");
#endif
        if (M_AP_TYPE(mon) == M_AP_FURNITURE) {
            Strcat(outbuf, an(defsyms[mon->mappearance].explanation));
        } else if (M_AP_TYPE(mon) == M_AP_OBJECT
                   /* remembered glyph, not glyph_at() which is 'mon' */
                   && glyph_is_object(glyph)) {
 objfrommap:
            otmp = (struct obj *) 0;
            fakeobj = object_from_map(glyph, x, y, &otmp);
            Strcat(outbuf, (otmp && otmp->otyp != STRANGE_OBJECT)
                              ? ansimpleoname(otmp)
                              : an(obj_descr[STRANGE_OBJECT].oc_name));
            if (fakeobj) {
                otmp->where = OBJ_FREE; /* object_from_map set to OBJ_FLOOR */
                dealloc_obj(otmp);
            }
        } else {
            Strcat(outbuf, something);
        }
#if 1 /*JP*/
        Strcat(outbuf, suffixbuf);
#endif
    } else if (M_AP_TYPE(mon) == M_AP_MONSTER) {
        if (altmon)
#if 0 /*JP:T*/
            Sprintf(outbuf, ", masquerading as %s",
                    an(mons[mon->mappearance].mname));
#else
            Sprintf(outbuf, "%sになりすましている",
                    mons[mon->mappearance].mname);
#endif
    } else if (isyou ? u.uundetected : mon->mundetected) {
#if 0 /*JP*/
        Strcpy(outbuf, ", hiding");
#else
        Strcpy(suffixbuf, "に隠れている");
#endif
        if (hides_under(mon->data)) {
#if 0 /*JP*//*地形の場合「の下に」などは不自然なので、単に省略しておく*/
            Strcat(outbuf, " under ");
#endif
            /* remembered glyph, not glyph_at() which is 'mon' */
            if (glyph_is_object(glyph))
                goto objfrommap;
            Strcat(outbuf, something);
        } else if (is_hider(mon->data)) {
#if 0 /*JP:T*/
            Sprintf(eos(outbuf), " on the %s",
                    (is_flyer(mon->data) || mon->data->mlet == S_PIERCER)
                       ? "ceiling"
                       : surface(x, y)); /* trapper */
#else
            Sprintf(eos(outbuf), "%s",
                    (is_flyer(mon->data) || mon->data->mlet == S_PIERCER)
                       ? "天井"
                       : surface(x, y)); /* trapper */
#endif
        } else {
            if (mon->data->mlet == S_EEL && is_pool(x, y))
#if 0 /*JP:T*/
                Strcat(outbuf, " in murky water");
#else
                Strcat(outbuf, "にごった水の中");
#endif
        }
#if 1 /*JP*/
        Strcat(outbuf, suffixbuf);
#endif
    }
}

/* extracted from lookat(); also used by namefloorobj() */
boolean
object_from_map(glyph, x, y, obj_p)
int glyph, x, y;
struct obj **obj_p;
{
    boolean fakeobj = FALSE, mimic_obj = FALSE;
    struct monst *mtmp;
    struct obj *otmp;
    int glyphotyp = glyph_to_obj(glyph);

    *obj_p = (struct obj *) 0;
    /* TODO: check inside containers in case glyph came from detection */
    if ((otmp = sobj_at(glyphotyp, x, y)) == 0)
        for (otmp = level.buriedobjlist; otmp; otmp = otmp->nobj)
            if (otmp->ox == x && otmp->oy == y && otmp->otyp == glyphotyp)
                break;

    /* there might be a mimic here posing as an object */
    mtmp = m_at(x, y);
    if (mtmp && is_obj_mappear(mtmp, (unsigned) glyphotyp)) {
        otmp = 0;
        mimic_obj = TRUE;
    } else
        mtmp = 0;

    if (!otmp || otmp->otyp != glyphotyp) {
        /* this used to exclude STRANGE_OBJECT; now caller deals with it */
        otmp = mksobj(glyphotyp, FALSE, FALSE);
        if (!otmp)
            return FALSE;
        fakeobj = TRUE;
        if (otmp->oclass == COIN_CLASS)
            otmp->quan = 2L; /* to force pluralization */
        else if (otmp->otyp == SLIME_MOLD)
            otmp->spe = context.current_fruit; /* give it a type */
        if (mtmp && has_mcorpsenm(mtmp)) { /* mimic as corpse/statue */
            if (otmp->otyp == SLIME_MOLD)
                /* override context.current_fruit to avoid
                     look, use 'O' to make new named fruit, look again
                   giving different results when current_fruit changes */
                otmp->spe = MCORPSENM(mtmp);
            else
                otmp->corpsenm = MCORPSENM(mtmp);
        } else if (otmp->otyp == CORPSE && glyph_is_body(glyph)) {
            otmp->corpsenm = glyph - GLYPH_BODY_OFF;
        } else if (otmp->otyp == STATUE && glyph_is_statue(glyph)) {
            otmp->corpsenm = glyph - GLYPH_STATUE_OFF;
        }
        if (otmp->otyp == LEASH)
            otmp->leashmon = 0;
        /* extra fields needed for shop price with doname() formatting */
        otmp->where = OBJ_FLOOR;
        otmp->ox = x, otmp->oy = y;
        otmp->no_charge = (otmp->otyp == STRANGE_OBJECT && costly_spot(x, y));
    }
    /* if located at adjacent spot, mark it as having been seen up close
       (corpse type will be known even if dknown is 0, so we don't need a
       touch check for cockatrice corpse--we're looking without touching) */
    if (otmp && distu(x, y) <= 2 && !Blind && !Hallucination
        /* redundant: we only look for an object which matches current
           glyph among floor and buried objects; when !Blind, any buried
           object's glyph will have been replaced by whatever is present
           on the surface as soon as we moved next to its spot */
        && (fakeobj || otmp->where == OBJ_FLOOR) /* not buried */
        /* terrain mode views what's already known, doesn't learn new stuff */
        && !iflags.terrainmode) /* so don't set dknown when in terrain mode */
        otmp->dknown = 1; /* if a pile, clearly see the top item only */
    if (fakeobj && mtmp && mimic_obj &&
        (otmp->dknown || (M_AP_FLAG(mtmp) & M_AP_F_DKNOWN))) {
            mtmp->m_ap_type |= M_AP_F_DKNOWN;
            otmp->dknown = 1;
    }
    *obj_p = otmp;
    return fakeobj; /* when True, caller needs to dealloc *obj_p */
}

STATIC_OVL void
look_at_object(buf, x, y, glyph)
char *buf; /* output buffer */
int x, y, glyph;
{
    struct obj *otmp = 0;
    boolean fakeobj = object_from_map(glyph, x, y, &otmp);

    if (otmp) {
        Strcpy(buf, (otmp->otyp != STRANGE_OBJECT)
                     ? distant_name(otmp, otmp->dknown ? doname_with_price
                                                       : doname_vague_quan)
                     : obj_descr[STRANGE_OBJECT].oc_name);
        if (fakeobj) {
            otmp->where = OBJ_FREE; /* object_from_map set it to OBJ_FLOOR */
            dealloc_obj(otmp), otmp = 0;
        }
    } else
        Strcpy(buf, something); /* sanity precaution */

    if (otmp && otmp->where == OBJ_BURIED)
/*JP
        Strcat(buf, " (buried)");
*/
        Strcat(buf, " (埋まっている)");
    else if (levl[x][y].typ == STONE || levl[x][y].typ == SCORR)
/*JP
        Strcat(buf, " embedded in stone");
*/
        Strcat(buf, "，岩に埋めこまれている");
    else if (IS_WALL(levl[x][y].typ) || levl[x][y].typ == SDOOR)
/*JP
        Strcat(buf, " embedded in a wall");
*/
        Strcat(buf, "，壁に埋めこまれている");
    else if (closed_door(x, y))
/*JP
        Strcat(buf, " embedded in a door");
*/
        Strcat(buf, "，扉に埋めこまれている");
    else if (is_pool(x, y))
      /*JP 3.4.3 この部分は物体にしか使われない */
/*JP
        Strcat(buf, " in water");
*/
        Strcat(buf, "，水中にある");
    else if (is_lava(x, y))
#if 0 /*JP:T*/
        Strcat(buf, " in molten lava"); /* [can this ever happen?] */
#else
        Strcat(buf, "，溶岩の中にある");        /* [can this ever happen?] */
#endif
    return;
}

STATIC_OVL void
look_at_monster(buf, monbuf, mtmp, x, y)
char *buf, *monbuf; /* buf: output, monbuf: optional output */
struct monst *mtmp;
int x, y;
{
    char *name, monnambuf[BUFSZ];
    boolean accurate = !Hallucination;

    name = (mtmp->data == &mons[PM_COYOTE] && accurate)
              ? coyotename(mtmp, monnambuf)
              : distant_monnam(mtmp, ARTICLE_NONE, monnambuf);
#if 0 /*JP:T*/
    Sprintf(buf, "%s%s%s",
            (mtmp->mx != x || mtmp->my != y)
                ? ((mtmp->isshk && accurate) ? "tail of " : "tail of a ")
                : "",
            (mtmp->mtame && accurate)
                ? "tame "
                : (mtmp->mpeaceful && accurate)
                    ? "peaceful "
                    : "",
            name);
#else
    Sprintf(buf, "%s%s%s",
            (mtmp->mtame && accurate)
                ? "手なずけられた"
                : (mtmp->mpeaceful && accurate)
                    ? "友好的な"
                    : "",
            name,
            (mtmp->mx != x || mtmp->my != y)
                ? ((mtmp->isshk && accurate) ? "の尻尾" : "の尻尾")
                : "");
#endif
    if (u.ustuck == mtmp) {
        if (u.uswallow || iflags.save_uswallow) /* monster detection */
#if 0 /*JP:T*/
            Strcat(buf, is_animal(mtmp->data)
                          ? ", swallowing you" : ", engulfing you");
#else
            Strcat(buf, ", あなたを飲み込んでいる");
#endif
        else
            Strcat(buf, (Upolyd && sticks(youmonst.data))
/*JP
                          ? ", being held" : ", holding you");
*/
                          ? "，あなたが掴まえている" : "，あなたを掴まえている");
    }
    if (mtmp->mleashed)
/*JP
        Strcat(buf, ", leashed to you");
*/
        Strcat(buf, "，紐で結ばれている");

    if (mtmp->mtrapped && cansee(mtmp->mx, mtmp->my)) {
        struct trap *t = t_at(mtmp->mx, mtmp->my);
        int tt = t ? t->ttyp : NO_TRAP;

        /* newsym lets you know of the trap, so mention it here */
        if (tt == BEAR_TRAP || is_pit(tt) || tt == WEB) {
/*JP
            Sprintf(eos(buf), ", trapped in %s",
*/
            Sprintf(eos(buf), ", %sに捕まっている",
                    an(defsyms[trap_to_defsym(tt)].explanation));
            t->tseen = 1;
        }
    }

    /* we know the hero sees a monster at this location, but if it's shown
       due to persistant monster detection he might remember something else */
    if (mtmp->mundetected || M_AP_TYPE(mtmp))
        mhidden_description(mtmp, FALSE, eos(buf));

    if (monbuf) {
        unsigned how_seen = howmonseen(mtmp);

        monbuf[0] = '\0';
        if (how_seen != 0 && how_seen != MONSEEN_NORMAL) {
            if (how_seen & MONSEEN_NORMAL) {
/*JP
                Strcat(monbuf, "normal vision");
*/
                Strcat(monbuf, "通常の視覚");
                how_seen &= ~MONSEEN_NORMAL;
                /* how_seen can't be 0 yet... */
                if (how_seen)
                    Strcat(monbuf, ", ");
            }
            if (how_seen & MONSEEN_SEEINVIS) {
/*JP
                Strcat(monbuf, "see invisible");
*/
                Strcat(monbuf, "見えないものを見る視覚");
                how_seen &= ~MONSEEN_SEEINVIS;
                if (how_seen)
                    Strcat(monbuf, ", ");
            }
            if (how_seen & MONSEEN_INFRAVIS) {
/*JP
                Strcat(monbuf, "infravision");
*/
                Strcat(monbuf, "赤外線が見える視覚");
                how_seen &= ~MONSEEN_INFRAVIS;
                if (how_seen)
                    Strcat(monbuf, ", ");
            }
            if (how_seen & MONSEEN_TELEPAT) {
/*JP
                Strcat(monbuf, "telepathy");
*/
                Strcat(monbuf, "テレパシー");
                how_seen &= ~MONSEEN_TELEPAT;
                if (how_seen)
                    Strcat(monbuf, ", ");
            }
            if (how_seen & MONSEEN_XRAYVIS) {
                /* Eyes of the Overworld */
/*JP
                Strcat(monbuf, "astral vision");
*/
                Strcat(monbuf, "精神による視覚");
                how_seen &= ~MONSEEN_XRAYVIS;
                if (how_seen)
                    Strcat(monbuf, ", ");
            }
            if (how_seen & MONSEEN_DETECT) {
/*JP
                Strcat(monbuf, "monster detection");
*/
                Strcat(monbuf, "怪物を発見する能力");
                how_seen &= ~MONSEEN_DETECT;
                if (how_seen)
                    Strcat(monbuf, ", ");
            }
            if (how_seen & MONSEEN_WARNMON) {
                if (Hallucination) {
/*JP
                    Strcat(monbuf, "paranoid delusion");
*/
                    Strcat(monbuf, "偏執的妄想");
                } else {
                    unsigned long mW = (context.warntype.obj
                                        | context.warntype.polyd),
                                  m2 = mtmp->data->mflags2;
#if 0 /*JP:T*/
                    const char *whom = ((mW & M2_HUMAN & m2) ? "human"
                                        : (mW & M2_ELF & m2) ? "elf"
                                          : (mW & M2_ORC & m2) ? "orc"
                                            : (mW & M2_DEMON & m2) ? "demon"
                                              : mtmp->data->mname);
#else
                    const char *whom = ((mW & M2_HUMAN & m2) ? "人間"
                                        : (mW & M2_ELF & m2) ? "エルフ"
                                          : (mW & M2_ORC & m2) ? "オーク"
                                            : (mW & M2_DEMON & m2) ? "悪魔"
                                              : mtmp->data->mname);
#endif

/*JP
                    Sprintf(eos(monbuf), "warned of %s", makeplural(whom));
*/
                    Sprintf(eos(monbuf), "%sを警告している", whom);
                }
                how_seen &= ~MONSEEN_WARNMON;
                if (how_seen)
                    Strcat(monbuf, ", ");
            }
            /* should have used up all the how_seen bits by now */
            if (how_seen) {
                impossible("lookat: unknown method of seeing monster");
                Sprintf(eos(monbuf), "(%u)", how_seen);
            }
        } /* seen by something other than normal vision */
    } /* monbuf is non-null */
}

/*
 * Return the name of the glyph found at (x,y).
 * If not hallucinating and the glyph is a monster, also monster data.
 */
STATIC_OVL struct permonst *
lookat(x, y, buf, monbuf)
int x, y;
char *buf, *monbuf;
{
    struct monst *mtmp = (struct monst *) 0;
    struct permonst *pm = (struct permonst *) 0;
    int glyph;

    buf[0] = monbuf[0] = '\0';
    glyph = glyph_at(x, y);
    if (u.ux == x && u.uy == y && canspotself()
        && !(iflags.save_uswallow &&
             glyph == mon_to_glyph(u.ustuck, rn2_on_display_rng))
        && (!iflags.terrainmode || (iflags.terrainmode & TER_MON) != 0)) {
        /* fill in buf[] */
        (void) self_lookat(buf);

        /* file lookup can't distinguish between "gnomish wizard" monster
           and correspondingly named player character, always picking the
           former; force it to find the general "wizard" entry instead */
        if (Role_if(PM_WIZARD) && Race_if(PM_GNOME) && !Upolyd)
            pm = &mons[PM_WIZARD];

        /* When you see yourself normally, no explanation is appended
           (even if you could also see yourself via other means).
           Sensing self while blind or swallowed is treated as if it
           were by normal vision (cf canseeself()). */
        if ((Invisible || u.uundetected) && !Blind
            && !(u.uswallow || iflags.save_uswallow)) {
            unsigned how = 0;

            if (Infravision)
                how |= 1;
            if (Unblind_telepat)
                how |= 2;
            if (Detect_monsters)
                how |= 4;

            if (how)
#if 0 /*JP:T*/
                Sprintf(eos(buf), " [seen: %s%s%s%s%s]",
                        (how & 1) ? "infravision" : "",
                        /* add comma if telep and infrav */
                        ((how & 3) > 2) ? ", " : "",
                        (how & 2) ? "telepathy" : "",
                        /* add comma if detect and (infrav or telep or both) */
                        ((how & 7) > 4) ? ", " : "",
                        (how & 4) ? "monster detection" : "");
#else
                Sprintf(eos(buf), " [感知: %s%s%s%s%s]",
                        (how & 1) ? "赤外線" : "",
                        /* add comma if telep and infrav */
                        ((how & 3) > 2) ? ", " : "",
                        (how & 2) ? "テレパシー" : "",
                        /* add comma if detect and (infrav or telep or both) */
                        ((how & 7) > 4) ? ", " : "",
                        (how & 4) ? "怪物感知" : "");
#endif
        }
    } else if (u.uswallow) {
        /* when swallowed, we're only called for spots adjacent to hero,
           and blindness doesn't prevent hero from feeling what holds him */
/*JP
        Sprintf(buf, "interior of %s", a_monnam(u.ustuck));
*/
        Sprintf(buf, "%sの内部", a_monnam(u.ustuck));
        pm = u.ustuck->data;
    } else if (glyph_is_monster(glyph)) {
        bhitpos.x = x;
        bhitpos.y = y;
        if ((mtmp = m_at(x, y)) != 0) {
            look_at_monster(buf, monbuf, mtmp, x, y);
            pm = mtmp->data;
        } else if (Hallucination) {
            /* 'monster' must actually be a statue */
            Strcpy(buf, rndmonnam((char *) 0));
        }
    } else if (glyph_is_object(glyph)) {
        look_at_object(buf, x, y, glyph); /* fill in buf[] */
    } else if (glyph_is_trap(glyph)) {
        int tnum = what_trap(glyph_to_trap(glyph), rn2_on_display_rng);

        /* Trap detection displays a bear trap at locations having
         * a trapped door or trapped container or both.
         * TODO: we should create actual trap types for doors and
         * chests so that they can have their own glyphs and tiles.
         */
        if (trapped_chest_at(tnum, x, y))
#if 0 /*JP:T*/
            Strcpy(buf, "trapped chest"); /* might actually be a large box */
#else
            Strcpy(buf, "罠の仕掛けられた箱"); /* might actually be a large box */
#endif
        else if (trapped_door_at(tnum, x, y))
#if 0 /*JP:T*/
            Strcpy(buf, "trapped door"); /* not "trap door"... */
#else
            Strcpy(buf, "罠の仕掛けられた扉"); /* not "trap door"... */
#endif
        else
            Strcpy(buf, defsyms[trap_to_defsym(tnum)].explanation);
    } else if (glyph_is_warning(glyph)) {
        int warnindx = glyph_to_warning(glyph);

        Strcpy(buf, def_warnsyms[warnindx].explanation);
    } else if (!glyph_is_cmap(glyph)) {
/*JP
        Strcpy(buf, "unexplored area");
*/
        Strcpy(buf, "未探索の場所");
    } else {
        int amsk;
        aligntyp algn;

        switch (glyph_to_cmap(glyph)) {
        case S_altar:
            amsk = ((mtmp = m_at(x, y)) != 0 && has_mcorpsenm(mtmp)
                    && M_AP_TYPE(mtmp) == M_AP_FURNITURE
                    && mtmp->mappearance == S_altar) ? MCORPSENM(mtmp)
                   : levl[x][y].altarmask;
            algn = Amask2align(amsk & ~AM_SHRINE);
/*JP
            Sprintf(buf, "%s %saltar",
*/
            Sprintf(buf, "%s%s祭壇",
                    /* like endgame high priests, endgame high altars
                       are only recognizable when immediately adjacent */
                    (Is_astralevel(&u.uz) && distu(x, y) > 2)
/*JP
                        ? "aligned"
*/
                        ? "属性の"
                        : align_str(algn),
                    ((amsk & AM_SHRINE) != 0
                     && (Is_astralevel(&u.uz) || Is_sanctum(&u.uz)))
/*JP
                        ? "high "
*/
                        ? "高位の"
                        : "");
            break;
        case S_ndoor:
            if (is_drawbridge_wall(x, y) >= 0)
/*JP
                Strcpy(buf, "open drawbridge portcullis");
*/
                Strcpy(buf,"開いている跳ね橋");
            else if ((levl[x][y].doormask & ~D_TRAPPED) == D_BROKEN)
/*JP
                Strcpy(buf, "broken door");
*/
                Strcpy(buf,"壊れた扉");
            else
/*JP
                Strcpy(buf, "doorway");
*/
                Strcpy(buf,"出入り口");
            break;
        case S_cloud:
            Strcpy(buf,
/*JP
                   Is_airlevel(&u.uz) ? "cloudy area" : "fog/vapor cloud");
*/
                   Is_airlevel(&u.uz) ? "曇っている場所" : "霧/蒸気の雲");
            break;
        case S_stone:
            if (!levl[x][y].seenv) {
/*JP
                Strcpy(buf, "unexplored");
*/
                Strcpy(buf, "未探索");
                break;
            } else if (Underwater && !Is_waterlevel(&u.uz)) {
                /* "unknown" == previously mapped but not visible when
                   submerged; better terminology appreciated... */
                Strcpy(buf, (distu(x, y) <= 2) ? "land" : "unknown");
                break;
            } else if (levl[x][y].typ == STONE || levl[x][y].typ == SCORR) {
/*JP
                Strcpy(buf, "stone");
*/
                Strcpy(buf, "岩盤");
                break;
            }
            /*FALLTHRU*/
        default:
            Strcpy(buf, defsyms[glyph_to_cmap(glyph)].explanation);
            break;
        }
    }
    return (pm && !Hallucination) ? pm : (struct permonst *) 0;
}

/*
 * Look in the "data" file for more info.  Called if the user typed in the
 * whole name (user_typed_name == TRUE), or we've found a possible match
 * with a character/glyph and flags.help is TRUE.
 *
 * NOTE: when (user_typed_name == FALSE), inp is considered read-only and
 *       must not be changed directly, e.g. via lcase(). We want to force
 *       lcase() for data.base lookup so that we can have a clean key.
 *       Therefore, we create a copy of inp _just_ for data.base lookup.
 */
STATIC_OVL void
checkfile(inp, pm, user_typed_name, without_asking, supplemental_name)
char *inp;
struct permonst *pm;
boolean user_typed_name, without_asking;
char *supplemental_name;
{
    dlb *fp;
    char buf[BUFSZ], newstr[BUFSZ], givenname[BUFSZ];
    char *ep, *dbase_str;
    unsigned long txt_offset = 0L;
    winid datawin = WIN_ERR;

    fp = dlb_fopen(DATAFILE, "r");
    if (!fp) {
/*JP
        pline("Cannot open 'data' file!");
*/
        pline("データファイルを開けない！");
        return;
    }
    /* If someone passed us garbage, prevent fault. */
    if (!inp || strlen(inp) > (BUFSZ - 1)) {
        impossible("bad do_look buffer passed (%s)!",
                   !inp ? "null" : "too long");
        goto checkfile_done;
    }

    /* To prevent the need for entries in data.base like *ngel to account
     * for Angel and angel, make the lookup string the same for both
     * user_typed_name and picked name.
     */
    if (pm != (struct permonst *) 0 && !user_typed_name)
        dbase_str = strcpy(newstr, pm->mname);
    else
        dbase_str = strcpy(newstr, inp);
    (void) lcase(dbase_str);

    /*JP:TODO:データベース検索は動いていないので要修正*/
    /*
     * TODO:
     * The switch from xname() to doname_vague_quan() in look_at_obj()
     * had the unintendded side-effect of making names picked from
     * pointing at map objects become harder to simplify for lookup.
     * We should split the prefix and suffix handling used by wish
     * parsing and also wizmode monster generation out into separate
     * routines and use those routines here.  This currently lacks
     * erosion handling and probably lots of other bits and pieces
     * that wishing already understands and most of this duplicates
     * stuff already done for wish handling or monster generation.
     */
    if (!strncmp(dbase_str, "interior of ", 12))
        dbase_str += 12;
    if (!strncmp(dbase_str, "a ", 2))
        dbase_str += 2;
    else if (!strncmp(dbase_str, "an ", 3))
        dbase_str += 3;
    else if (!strncmp(dbase_str, "the ", 4))
        dbase_str += 4;
    else if (!strncmp(dbase_str, "some ", 5))
        dbase_str += 5;
    else if (digit(*dbase_str)) {
        /* remove count prefix ("2 ya") which can come from looking at map */
        while (digit(*dbase_str))
            ++dbase_str;
        if (*dbase_str == ' ')
            ++dbase_str;
    }
    if (!strncmp(dbase_str, "pair of ", 8))
        dbase_str += 8;
    if (!strncmp(dbase_str, "tame ", 5))
        dbase_str += 5;
    else if (!strncmp(dbase_str, "peaceful ", 9))
        dbase_str += 9;
    if (!strncmp(dbase_str, "invisible ", 10))
        dbase_str += 10;
    if (!strncmp(dbase_str, "saddled ", 8))
        dbase_str += 8;
    if (!strncmp(dbase_str, "blessed ", 8))
        dbase_str += 8;
    else if (!strncmp(dbase_str, "uncursed ", 9))
        dbase_str += 9;
    else if (!strncmp(dbase_str, "cursed ", 7))
        dbase_str += 7;
    if (!strncmp(dbase_str, "empty ", 6))
        dbase_str += 6;
    if (!strncmp(dbase_str, "partly used ", 12))
        dbase_str += 12;
    else if (!strncmp(dbase_str, "partly eaten ", 13))
        dbase_str += 13;
    if (!strncmp(dbase_str, "statue of ", 10))
        dbase_str[6] = '\0';
    else if (!strncmp(dbase_str, "figurine of ", 12))
        dbase_str[8] = '\0';
    /* remove enchantment ("+0 aklys"); [for 3.6.0 and earlier, this wasn't
       needed because looking at items on the map used xname() rather than
       doname() hence known enchantment was implicitly suppressed] */
    if (*dbase_str && index("+-", dbase_str[0]) && digit(dbase_str[1])) {
        ++dbase_str; /* skip sign */
        while (digit(*dbase_str))
            ++dbase_str;
        if (*dbase_str == ' ')
            ++dbase_str;
    }
    /* "towel", "wet towel", and "moist towel" share one data.base entry;
       for "wet towel", we keep prefix so that the prompt will ask about
       "wet towel"; for "moist towel", we also want to ask about "wet towel".
       (note: strncpy() only terminates output string if the specified
       count is bigger than the length of the substring being copied) */
#if 0 /*JP*/
    if (!strncmp(dbase_str, "moist towel", 11))
        (void) strncpy(dbase_str += 2, "wet", 3); /* skip "mo" replace "ist" */
#endif

    /* Make sure the name is non-empty. */
    if (*dbase_str) {
        long pass1offset = -1L;
        int chk_skip, pass = 1;
        boolean yes_to_moreinfo, found_in_file, pass1found_in_file,
                skipping_entry;
        char *sp, *ap, *alt = 0; /* alternate description */

        /* adjust the input to remove "named " and "called " */
        if ((ep = strstri(dbase_str, " named ")) != 0) {
            alt = ep + 7;
            if ((ap = strstri(dbase_str, " called ")) != 0 && ap < ep)
                ep = ap; /* "named" is alt but truncate at "called" */
        } else if ((ep = strstri(dbase_str, " called ")) != 0) {
            copynchars(givenname, ep + 8, BUFSZ - 1);
            alt = givenname;
            if (supplemental_name && (sp = strstri(inp, " called ")) != 0)
                copynchars(supplemental_name, sp + 8, BUFSZ - 1);
        } else
            ep = strstri(dbase_str, ", ");
        if (ep && ep > dbase_str)
            *ep = '\0';
        /* remove article from 'alt' name ("a pair of lenses named
           The Eyes of the Overworld" simplified above to "lenses named
           The Eyes of the Overworld", now reduced to "The Eyes of the
           Overworld", skip "The" as with base name processing) */
        if (alt && (!strncmpi(alt, "a ", 2)
                    || !strncmpi(alt, "an ", 3)
                    || !strncmpi(alt, "the ", 4)))
            alt = index(alt, ' ') + 1;
        /* remove charges or "(lit)" or wizmode "(N aum)" */
        if ((ep = strstri(dbase_str, " (")) != 0 && ep > dbase_str)
            *ep = '\0';
        if (alt && (ap = strstri(alt, " (")) != 0 && ap > alt)
            *ap = '\0';

        /*
         * If the object is named, then the name is the alternate description;
         * otherwise, the result of makesingular() applied to the name is.
         * This isn't strictly optimal, but named objects of interest to the
         * user will usually be found under their name, rather than under
         * their object type, so looking for a singular form is pointless.
         */
        if (!alt)
            alt = makesingular(dbase_str);

        pass1found_in_file = FALSE;
        for (pass = !strcmp(alt, dbase_str) ? 0 : 1; pass >= 0; --pass) {
            found_in_file = skipping_entry = FALSE;
            txt_offset = 0L;
            if (dlb_fseek(fp, txt_offset, SEEK_SET) < 0 ) {
                impossible("can't get to start of 'data' file");
                goto checkfile_done;
            }
            /* skip first record; read second */
            if (!dlb_fgets(buf, BUFSZ, fp) || !dlb_fgets(buf, BUFSZ, fp)) {
                impossible("can't read 'data' file");
                goto checkfile_done;
            } else if (sscanf(buf, "%8lx\n", &txt_offset) < 1
                       || txt_offset == 0L)
                goto bad_data_file;

            /* look for the appropriate entry */
            while (dlb_fgets(buf, BUFSZ, fp)) {
                if (*buf == '.')
                    break; /* we passed last entry without success */

                if (digit(*buf)) {
                    /* a number indicates the end of current entry */
                    skipping_entry = FALSE;
                } else if (!skipping_entry) {
                    if (!(ep = index(buf, '\n')))
                        goto bad_data_file;
                    (void) strip_newline((ep > buf) ? ep - 1 : ep);
                    /* if we match a key that begins with "~", skip
                       this entry */
                    chk_skip = (*buf == '~') ? 1 : 0;
                    if ((pass == 0 && pmatch(&buf[chk_skip], dbase_str))
                        || (pass == 1 && alt && pmatch(&buf[chk_skip], alt))) {
                        if (chk_skip) {
                            skipping_entry = TRUE;
                            continue;
                        } else {
                            found_in_file = TRUE;
                            if (pass == 1)
                                pass1found_in_file = TRUE;
                            break;
                        }
                    }
                }
            }
            if (found_in_file) {
                long entry_offset, fseekoffset;
                int entry_count;
                int i;

                /* skip over other possible matches for the info */
                do {
                    if (!dlb_fgets(buf, BUFSZ, fp))
                        goto bad_data_file;
                } while (!digit(*buf));
                if (sscanf(buf, "%ld,%d\n", &entry_offset, &entry_count) < 2)
                    goto bad_data_file;
                fseekoffset = (long) txt_offset + entry_offset;
                if (pass == 1)
                    pass1offset = fseekoffset;
                else if (fseekoffset == pass1offset)
                    goto checkfile_done;

                yes_to_moreinfo = FALSE;
                if (!user_typed_name && !without_asking) {
                    char *entrytext = pass ? alt : dbase_str;
                    char question[QBUFSZ];

#if 0 /*JP:T*/
                    Strcpy(question, "More info about \"");
                    /* +2 => length of "\"?" */
                    copynchars(eos(question), entrytext,
                               (int) (sizeof question - 1
                                      - (strlen(question) + 2)));
                    Strcat(question, "\"?");
#else
                    Strcpy(question, "「");
                    /* +16 => "」の詳細を見る？"の長さ */
                    copynchars(eos(question), entrytext,
                               (int) (sizeof question - 1
                                      - (strlen(question) + 16)));
                    Strcat(question, "」の詳細を見る？");
#endif
                    if (yn(question) == 'y')
                        yes_to_moreinfo = TRUE;
                }

                if (user_typed_name || without_asking || yes_to_moreinfo) {
                    if (dlb_fseek(fp, fseekoffset, SEEK_SET) < 0) {
/*JP
                        pline("? Seek error on 'data' file!");
*/
                        pline("'data'ファイルのシークエラー！");
                        goto checkfile_done;
                    }
                    datawin = create_nhwindow(NHW_MENU);
                    for (i = 0; i < entry_count; i++) {
                        if (!dlb_fgets(buf, BUFSZ, fp))
                            goto bad_data_file;
                        (void) strip_newline(buf);
                        if (index(buf + 1, '\t') != 0)
                            (void) tabexpand(buf + 1);
                        putstr(datawin, 0, buf + 1);
                    }
                    display_nhwindow(datawin, FALSE);
                    destroy_nhwindow(datawin), datawin = WIN_ERR;
                }
            } else if (user_typed_name && pass == 0 && !pass1found_in_file)
/*JP
                pline("I don't have any information on those things.");
*/
                pline("そんな名前は聞いたことがない．");
        }
    }
    goto checkfile_done; /* skip error feedback */

 bad_data_file:
    impossible("'data' file in wrong format or corrupted");
 checkfile_done:
    if (datawin != WIN_ERR)
        destroy_nhwindow(datawin);
    (void) dlb_fclose(fp);
    return;
}

int
do_screen_description(cc, looked, sym, out_str, firstmatch, for_supplement)
coord cc;
boolean looked;
int sym;
char *out_str;
const char **firstmatch;
struct permonst **for_supplement;
{
/*JP
    static const char mon_interior[] = "the interior of a monster",
*/
    static const char mon_interior[] = "怪物の内部",
/*JP
                      unreconnoitered[] = "unreconnoitered";
*/
                      unreconnoitered[] = "未観察";
    static char look_buf[BUFSZ];
    char prefix[BUFSZ];
    int i, alt_i, j, glyph = NO_GLYPH,
        skipped_venom = 0, found = 0; /* count of matching syms found */
    boolean hit_trap, need_to_look = FALSE,
            submerged = (Underwater && !Is_waterlevel(&u.uz));
    const char *x_str;
    nhsym tmpsym;

    if (looked) {
        int oc;
        unsigned os;

        glyph = glyph_at(cc.x, cc.y);
        /* Convert glyph at selected position to a symbol for use below. */
        (void) mapglyph(glyph, &sym, &oc, &os, cc.x, cc.y, 0);

        Sprintf(prefix, "%s        ", encglyph(glyph));
    } else
        Sprintf(prefix, "%c        ", sym);

    /*
     * Check all the possibilities, saving all explanations in a buffer.
     * When all have been checked then the string is printed.
     */

    /*
     * Handle restricted vision range (limited to adjacent spots when
     * swallowed or underwater) cases first.
     *
     * 3.6.0 listed anywhere on map, other than self, as "interior
     * of a monster" when swallowed, and non-adjacent water or
     * non-water anywhere as "dark part of a room" when underwater.
     * "unreconnoitered" is an attempt to convey "even if you knew
     * what was there earlier, you don't know what is there in the
     * current circumstance".
     *
     * (Note: 'self' will always be visible when swallowed so we don't
     * need special swallow handling for <ux,uy>.
     * Another note: for '#terrain' without monsters, u.uswallow and
     * submerged will always both be False and skip this code.)
     */
    x_str = 0;
    if (!looked) {
        ; /* skip special handling */
    } else if (((u.uswallow || submerged) && distu(cc.x, cc.y) > 2)
               /* detection showing some category, so mostly background */
               || ((iflags.terrainmode & (TER_DETECT | TER_MAP)) == TER_DETECT
                   && glyph == cmap_to_glyph(S_stone))) {
        x_str = unreconnoitered;
        need_to_look = FALSE;
    } else if (is_swallow_sym(sym)) {
        x_str = mon_interior;
        need_to_look = TRUE; /* for specific monster type */
    }
    if (x_str) {
        /* we know 'found' is zero here, but guard against some other
           special case being inserted ahead of us someday */
        if (!found) {
            Sprintf(out_str, "%s%s", prefix, x_str);
            *firstmatch = x_str;
            found++;
        } else {
            found += append_str(out_str, x_str); /* not 'an(x_str)' */
        }
        /* for is_swallow_sym(), we want to list the current symbol's
           other possibilities (wand for '/', throne for '\\', &c) so
           don't jump to the end for the x_str==mon_interior case */
        if (x_str == unreconnoitered)
            goto didlook;
    }
 check_monsters:
    /* Check for monsters */
    if (!iflags.terrainmode || (iflags.terrainmode & TER_MON) != 0) {
        for (i = 1; i < MAXMCLASSES; i++) {
            if (sym == (looked ? showsyms[i + SYM_OFF_M] : def_monsyms[i].sym)
                && def_monsyms[i].explain && *def_monsyms[i].explain) {
                need_to_look = TRUE;
                if (!found) {
                    Sprintf(out_str, "%s%s",
                            prefix, an(def_monsyms[i].explain));
                    *firstmatch = def_monsyms[i].explain;
                    found++;
                } else {
                    found += append_str(out_str, an(def_monsyms[i].explain));
                }
            }
        }
        /* handle '@' as a special case if it refers to you and you're
           playing a character which isn't normally displayed by that
           symbol; firstmatch is assumed to already be set for '@' */
        if ((looked ? (sym == showsyms[S_HUMAN + SYM_OFF_M]
                       && cc.x == u.ux && cc.y == u.uy)
                    : (sym == def_monsyms[S_HUMAN].sym && !flags.showrace))
            && !(Race_if(PM_HUMAN) || Race_if(PM_ELF)) && !Upolyd)
#if 0 /*JP:T*/
            found += append_str(out_str, "you"); /* tack on "or you" */
#else
            found += append_str(out_str, "あなた"); /* tack on "or you" */
#endif
    }

    /* Now check for objects */
    if (!iflags.terrainmode || (iflags.terrainmode & TER_OBJ) != 0) {
        for (i = 1; i < MAXOCLASSES; i++) {
            if (sym == (looked ? showsyms[i + SYM_OFF_O]
                               : def_oc_syms[i].sym)
                || (looked && i == ROCK_CLASS && glyph_is_statue(glyph))) {
                need_to_look = TRUE;
                if (looked && i == VENOM_CLASS) {
                    skipped_venom++;
                    continue;
                }
                if (!found) {
                    Sprintf(out_str, "%s%s",
                            prefix, an(def_oc_syms[i].explain));
                    *firstmatch = def_oc_syms[i].explain;
                    found++;
                } else {
                    found += append_str(out_str, an(def_oc_syms[i].explain));
                }
            }
        }
    }

    if (sym == DEF_INVISIBLE) {
        extern const char altinvisexplain[]; /* drawing.c */
        /* for active clairvoyance, use alternate "unseen creature" */
        boolean usealt = (EDetect_monsters & I_SPECIAL) != 0L;
        const char *unseen_explain = !usealt ? invisexplain : altinvisexplain;

        if (!found) {
            Sprintf(out_str, "%s%s", prefix, an(unseen_explain));
            *firstmatch = unseen_explain;
            found++;
        } else {
            found += append_str(out_str, an(unseen_explain));
        }
    }

    /* Now check for graphics symbols */
    alt_i = (sym == (looked ? showsyms[0] : defsyms[0].sym)) ? 0 : (2 + 1);
    for (hit_trap = FALSE, i = 0; i < MAXPCHARS; i++) {
        /* when sym is the default background character, we process
           i == 0 three times: unexplored, stone, dark part of a room */
        if (alt_i < 2) {
/*JP
            x_str = !alt_i++ ? "unexplored" : submerged ? "unknown" : "stone";
*/
            x_str = !alt_i++ ? "未探索" : submerged ? "未知" : "岩盤";
            i = 0; /* for second iteration, undo loop increment */
            /* alt_i is now 1 or 2 */
        } else {
            if (alt_i++ == 2)
                i = 0; /* undo loop increment */
            x_str = defsyms[i].explanation;
            if (submerged && !strcmp(x_str, defsyms[0].explanation))
#if 0 /*JP:T*/
                x_str = "land"; /* replace "dark part of a room" */
#else
                x_str = "地面"; /* replace "dark part of a room" */
#endif
            /* alt_i is now 3 or more and no longer of interest */
        }
        if (sym == (looked ? showsyms[i] : defsyms[i].sym) && *x_str) {
#if 0 /*JP*//*日本語には関係ない*/
            /* avoid "an unexplored", "an stone", "an air", "a water",
               "a floor of a room", "a dark part of a room";
               article==2 => "the", 1 => "an", 0 => (none) */
            int article = strstri(x_str, " of a room") ? 2
                          : !(alt_i <= 2
                              || strcmp(x_str, "air") == 0
                              || strcmp(x_str, "land") == 0
                              || strcmp(x_str, "water") == 0);

#endif
            if (!found) {
                if (is_cmap_trap(i)) {
/*JP
                    Sprintf(out_str, "%sa trap", prefix);
*/
                    Sprintf(out_str, "%s罠", prefix);
                    hit_trap = TRUE;
                } else {
#if 0 /*JP:T*/
                    Sprintf(out_str, "%s%s", prefix,
                            article == 2 ? the(x_str)
                            : article == 1 ? an(x_str) : x_str);
#else
                    Sprintf(out_str, "%s%s", prefix, x_str);
#endif
                }
                *firstmatch = x_str;
                found++;
            } else if (!(hit_trap && is_cmap_trap(i))
                       && !(found >= 3 && is_cmap_drawbridge(i))
                       /* don't mention vibrating square outside of Gehennom
                          unless this happens to be one (hallucination?) */
                       && (i != S_vibrating_square || Inhell
                           || (looked && glyph_is_trap(glyph)
                               && glyph_to_trap(glyph) == VIBRATING_SQUARE))) {
#if 0 /*JP:T*/
                found += append_str(out_str, (article == 2) ? the(x_str)
                                             : (article == 1) ? an(x_str)
                                               : x_str);
#else
                found += append_str(out_str, x_str);
#endif
                if (is_cmap_trap(i))
                    hit_trap = TRUE;
            }

            if (i == S_altar || is_cmap_trap(i))
                need_to_look = TRUE;
        }
    }

    /* Now check for warning symbols */
    for (i = 1; i < WARNCOUNT; i++) {
        x_str = def_warnsyms[i].explanation;
        if (sym == (looked ? warnsyms[i] : def_warnsyms[i].sym)) {
            if (!found) {
                Sprintf(out_str, "%s%s", prefix, def_warnsyms[i].explanation);
                *firstmatch = def_warnsyms[i].explanation;
                found++;
            } else {
                found += append_str(out_str, def_warnsyms[i].explanation);
            }
            /* Kludge: warning trumps boulders on the display.
               Reveal the boulder too or player can get confused */
            if (looked && sobj_at(BOULDER, cc.x, cc.y))
/*JP
                Strcat(out_str, " co-located with a boulder");
*/
                Strcat(out_str, "(巨岩と同じ位置にある)");
            break; /* out of for loop*/
        }
    }

    /* if we ignored venom and list turned out to be short, put it back */
    if (skipped_venom && found < 2) {
        x_str = def_oc_syms[VENOM_CLASS].explain;
        if (!found) {
            Sprintf(out_str, "%s%s", prefix, an(x_str));
            *firstmatch = x_str;
            found++;
        } else {
            found += append_str(out_str, an(x_str));
        }
    }

    /* Finally, handle some optional overriding symbols */
    for (j = SYM_OFF_X; j < SYM_MAX; ++j) {
        if (j == (SYM_INVISIBLE + SYM_OFF_X))
            continue;       /* already handled above */
        tmpsym = Is_rogue_level(&u.uz) ? ov_rogue_syms[j]
                                       : ov_primary_syms[j];
        if (tmpsym && sym == tmpsym) {
            switch (j) {
            case SYM_BOULDER + SYM_OFF_X:
                if (!found) {
/*JP
                    *firstmatch = "boulder";
*/
                    *firstmatch = "岩";
                    Sprintf(out_str, "%s%s", prefix, an(*firstmatch));
                    found++;
                } else {
/*JP
                    found += append_str(out_str, "boulder");
*/
                    found += append_str(out_str, "岩");
                }
                break;
            case SYM_PET_OVERRIDE + SYM_OFF_X:
                if (looked) {
                    int oc = 0;
                    unsigned os = 0;

                    /* convert to symbol without override in effect */
                    (void) mapglyph(glyph, &sym, &oc, &os,
                                    cc.x, cc.y, MG_FLAG_NOOVERRIDE);
                    goto check_monsters;
                }
                break;
            case SYM_HERO_OVERRIDE + SYM_OFF_X:
                sym = showsyms[S_HUMAN + SYM_OFF_M];
                goto check_monsters;
            }
        }
    }
#if 0
    /* handle optional boulder symbol as a special case */
    if (o_syms[SYM_BOULDER + SYM_OFF_X]
        && sym == o_syms[SYM_BOULDER + SYM_OFF_X]) {
        if (!found) {
            *firstmatch = "boulder";
            Sprintf(out_str, "%s%s", prefix, an(*firstmatch));
            found++;
        } else {
            found += append_str(out_str, "boulder");
        }
    }
#endif

    /*
     * If we are looking at the screen, follow multiple possibilities or
     * an ambiguous explanation by something more detailed.
     */

    if (found > 4)
        /* 3.6.3: this used to be "That can be many things" (without prefix)
           which turned it into a sentence that lacked its terminating period;
           we could add one below but reinstating the prefix here is better */
/*JP
        Sprintf(out_str, "%scan be many things", prefix);
*/
        Sprintf(out_str, "%sここには多くのものがある", prefix);

 didlook:
    if (looked) {
        struct permonst *pm = (struct permonst *)0;

        if (found > 1 || need_to_look) {
            char monbuf[BUFSZ];
            char temp_buf[BUFSZ];

            pm = lookat(cc.x, cc.y, look_buf, monbuf);
            if (pm && for_supplement)
                *for_supplement = pm;
            *firstmatch = look_buf;
            if (*(*firstmatch)) {
                Sprintf(temp_buf, " (%s)", *firstmatch);
                (void) strncat(out_str, temp_buf,
                               BUFSZ - strlen(out_str) - 1);
                found = 1; /* we have something to look up */
            }
            if (monbuf[0]) {
/*JP
                Sprintf(temp_buf, " [seen: %s]", monbuf);
*/
                Sprintf(temp_buf, " [視覚: %s]", monbuf);
                (void) strncat(out_str, temp_buf,
                               BUFSZ - strlen(out_str) - 1);
            }
        }
    }

    return found;
}

/* also used by getpos hack in do_name.c */
/*JP
const char what_is_an_unknown_object[] = "an unknown object";
*/
const char what_is_an_unknown_object[] = "謎の物体";

int
do_look(mode, click_cc)
int mode;
coord *click_cc;
{
    boolean quick = (mode == 1); /* use cursor; don't search for "more info" */
    boolean clicklook = (mode == 2); /* right mouse-click method */
    char out_str[BUFSZ] = DUMMY;
    const char *firstmatch = 0;
    struct permonst *pm = 0, *supplemental_pm = 0;
    int i = '\0', ans = 0;
    int sym;              /* typed symbol or converted glyph */
    int found;            /* count of matching syms found */
    coord cc;             /* screen pos of unknown glyph */
    boolean save_verbose; /* saved value of flags.verbose */
    boolean from_screen;  /* question from the screen */

    cc.x = 0;
    cc.y = 0;

    if (!clicklook) {
        if (quick) {
            from_screen = TRUE; /* yes, we want to use the cursor */
            i = 'y';
        } else {
            menu_item *pick_list = (menu_item *) 0;
            winid win;
            anything any;

            any = zeroany;
            win = create_nhwindow(NHW_MENU);
            start_menu(win);
            any.a_char = '/';
            /* 'y' and 'n' to keep backwards compatibility with previous
               versions: "Specify unknown object by cursor?" */
            add_menu(win, NO_GLYPH, &any,
                     flags.lootabc ? 0 : any.a_char, 'y', ATR_NONE,
/*JP
                     "something on the map", MENU_UNSELECTED);
*/
                     "地図上にあるもの", MENU_UNSELECTED);
            any.a_char = 'i';
            add_menu(win, NO_GLYPH, &any,
                     flags.lootabc ? 0 : any.a_char, 0, ATR_NONE,
/*JP
                     "something you're carrying", MENU_UNSELECTED);
*/
                     "あなたが持っているもの", MENU_UNSELECTED);
            any.a_char = '?';
            add_menu(win, NO_GLYPH, &any,
                     flags.lootabc ? 0 : any.a_char, 'n', ATR_NONE,
/*JP
                     "something else (by symbol or name)", MENU_UNSELECTED);
*/
                     "それ以外(シンボルか名前で指定)", MENU_UNSELECTED);
            if (!u.uswallow && !Hallucination) {
                any = zeroany;
                add_menu(win, NO_GLYPH, &any, 0, 0, ATR_NONE,
                         "", MENU_UNSELECTED);
                /* these options work sensibly for the swallowed case,
                   but there's no reason for the player to use them then;
                   objects work fine when hallucinating, but screen
                   symbol/monster class letter doesn't match up with
                   bogus monster type, so suppress when hallucinating */
                any.a_char = 'm';
                add_menu(win, NO_GLYPH, &any,
                         flags.lootabc ? 0 : any.a_char, 0, ATR_NONE,
/*JP
                         "nearby monsters", MENU_UNSELECTED);
*/
                         "近くにいる怪物", MENU_UNSELECTED);
                any.a_char = 'M';
                add_menu(win, NO_GLYPH, &any,
                         flags.lootabc ? 0 : any.a_char, 0, ATR_NONE,
/*JP
                         "all monsters shown on map", MENU_UNSELECTED);
*/
                         "地図上にいる全ての怪物", MENU_UNSELECTED);
                any.a_char = 'o';
                add_menu(win, NO_GLYPH, &any,
                         flags.lootabc ? 0 : any.a_char, 0, ATR_NONE,
/*JP
                         "nearby objects", MENU_UNSELECTED);
*/
                         "近くにあるもの", MENU_UNSELECTED);
                any.a_char = 'O';
                add_menu(win, NO_GLYPH, &any,
                         flags.lootabc ? 0 : any.a_char, 0, ATR_NONE,
/*JP
                         "all objects shown on map", MENU_UNSELECTED);
*/
                         "地図上にある全てのもの", MENU_UNSELECTED);
            }
/*JP
            end_menu(win, "What do you want to look at:");
*/
            end_menu(win, "何を見る？");
            if (select_menu(win, PICK_ONE, &pick_list) > 0) {
                i = pick_list->item.a_char;
                free((genericptr_t) pick_list);
            }
            destroy_nhwindow(win);
        }

        switch (i) {
        default:
        case 'q':
            return 0;
        case 'y':
        case '/':
            from_screen = TRUE;
            sym = 0;
            cc.x = u.ux;
            cc.y = u.uy;
            break;
        case 'i':
          {
            char invlet;
            struct obj *invobj;

            invlet = display_inventory((const char *) 0, TRUE);
            if (!invlet || invlet == '\033')
                return 0;
            *out_str = '\0';
            for (invobj = invent; invobj; invobj = invobj->nobj)
                if (invobj->invlet == invlet) {
                    strcpy(out_str, singular(invobj, xname));
                    break;
                }
            if (*out_str)
                checkfile(out_str, pm, TRUE, TRUE, (char *) 0);
            return 0;
          }
        case '?':
            from_screen = FALSE;
/*JP
            getlin("Specify what? (type the word)", out_str);
*/
            getlin("何を調べる？(文字を入れてね)", out_str);
            if (strcmp(out_str, " ")) /* keep single space as-is */
                /* remove leading and trailing whitespace and
                   condense consecutive internal whitespace */
                mungspaces(out_str);
            if (out_str[0] == '\0' || out_str[0] == '\033')
                return 0;

            if (out_str[1]) { /* user typed in a complete string */
                checkfile(out_str, pm, TRUE, TRUE, (char *) 0);
                return 0;
            }
            sym = out_str[0];
            break;
        case 'm':
            look_all(TRUE, TRUE); /* list nearby monsters */
            return 0;
        case 'M':
            look_all(FALSE, TRUE); /* list all monsters */
            return 0;
        case 'o':
            look_all(TRUE, FALSE); /* list nearby objects */
            return 0;
        case 'O':
            look_all(FALSE, FALSE); /* list all objects */
            return 0;
        }
    } else { /* clicklook */
        cc.x = click_cc->x;
        cc.y = click_cc->y;
        sym = 0;
        from_screen = FALSE;
    }

    /* Save the verbose flag, we change it later. */
    save_verbose = flags.verbose;
    flags.verbose = flags.verbose && !quick;
    /*
     * The user typed one letter, or we're identifying from the screen.
     */
    do {
        /* Reset some variables. */
        pm = (struct permonst *) 0;
        found = 0;
        out_str[0] = '\0';

        if (from_screen || clicklook) {
            if (from_screen) {
                if (flags.verbose)
#if 0 /*JP*/
                    pline("Please move the cursor to %s.",
                          what_is_an_unknown_object);
#else
                    pline("カーソルを物体に移動してください．");
#endif
                else
/*JP
                    pline("Pick an object.");
*/
                    pline("物体を指定してください．");

                ans = getpos(&cc, quick, what_is_an_unknown_object);
                if (ans < 0 || cc.x < 0)
                    break; /* done */
                flags.verbose = FALSE; /* only print long question once */
            }
        }

        found = do_screen_description(cc, (from_screen || clicklook), sym,
                                      out_str, &firstmatch, &supplemental_pm);

        /* Finally, print out our explanation. */
        if (found) {
            /* use putmixed() because there may be an encoded glyph present */
            putmixed(WIN_MESSAGE, 0, out_str);
#ifdef DUMPLOG
            {
                char dmpbuf[BUFSZ];

                /* putmixed() bypasses pline() so doesn't write to DUMPLOG;
                   tty puts it into ^P recall, so it ought to be there;
                   DUMPLOG is plain text, so override graphics character;
                   at present, force space, but we ought to use defsyms[]
                   value for the glyph the graphics character came from */
                (void) decode_mixed(dmpbuf, out_str);
                if (dmpbuf[0] < ' ' || dmpbuf[0] >= 127) /* ASCII isprint() */
                    dmpbuf[0] = ' ';
                dumplogmsg(dmpbuf);
            }
#endif

            /* check the data file for information about this thing */
            if (found == 1 && ans != LOOK_QUICK && ans != LOOK_ONCE
                && (ans == LOOK_VERBOSE || (flags.help && !quick))
                && !clicklook) {
                char temp_buf[BUFSZ], supplemental_name[BUFSZ];

                supplemental_name[0] = '\0';
                Strcpy(temp_buf, firstmatch);
                checkfile(temp_buf, pm, FALSE,
                          (boolean) (ans == LOOK_VERBOSE), supplemental_name);
                if (supplemental_pm)
                    do_supplemental_info(supplemental_name, supplemental_pm,
                                         (boolean) (ans == LOOK_VERBOSE));
            }
        } else {
/*JP
            pline("I've never heard of such things.");
*/
            pline("そんな名前は聞いたことがない．");
        }
    } while (from_screen && !quick && ans != LOOK_ONCE && !clicklook);

    flags.verbose = save_verbose;
    return 0;
}

STATIC_OVL void
look_all(nearby, do_mons)
boolean nearby; /* True => within BOLTLIM, False => entire map */
boolean do_mons; /* True => monsters, False => objects */
{
    winid win;
    int x, y, lo_x, lo_y, hi_x, hi_y, glyph, count = 0;
    char lookbuf[BUFSZ], outbuf[BUFSZ];

    win = create_nhwindow(NHW_TEXT);
    lo_y = nearby ? max(u.uy - BOLT_LIM, 0) : 0;
    lo_x = nearby ? max(u.ux - BOLT_LIM, 1) : 1;
    hi_y = nearby ? min(u.uy + BOLT_LIM, ROWNO - 1) : ROWNO - 1;
    hi_x = nearby ? min(u.ux + BOLT_LIM, COLNO - 1) : COLNO - 1;
    for (y = lo_y; y <= hi_y; y++) {
        for (x = lo_x; x <= hi_x; x++) {
            lookbuf[0] = '\0';
            glyph = glyph_at(x, y);
            if (do_mons) {
                if (glyph_is_monster(glyph)) {
                    struct monst *mtmp;

                    bhitpos.x = x; /* [is this actually necessary?] */
                    bhitpos.y = y;
                    if (x == u.ux && y == u.uy && canspotself()) {
                        (void) self_lookat(lookbuf);
                        ++count;
                    } else if ((mtmp = m_at(x, y)) != 0) {
                        look_at_monster(lookbuf, (char *) 0, mtmp, x, y);
                        ++count;
                    }
                } else if (glyph_is_invisible(glyph)) {
                    /* remembered, unseen, creature */
                    Strcpy(lookbuf, invisexplain);
                    ++count;
                } else if (glyph_is_warning(glyph)) {
                    int warnindx = glyph_to_warning(glyph);

                    Strcpy(lookbuf, def_warnsyms[warnindx].explanation);
                    ++count;
                }
            } else { /* !do_mons */
                if (glyph_is_object(glyph)) {
                    look_at_object(lookbuf, x, y, glyph);
                    ++count;
                }
            }
            if (*lookbuf) {
                char coordbuf[20], which[12], cmode;

                cmode = (iflags.getpos_coords != GPCOORDS_NONE)
                           ? iflags.getpos_coords : GPCOORDS_MAP;
                if (count == 1) {
                    Strcpy(which, do_mons ? "monsters" : "objects");
                    if (nearby)
                        Sprintf(outbuf, "%s currently shown near %s:",
                                upstart(which),
                                (cmode != GPCOORDS_COMPASS)
                                  ? coord_desc(u.ux, u.uy, coordbuf, cmode)
                                  : !canspotself() ? "your position" : "you");
                    else
                        Sprintf(outbuf, "All %s currently shown on the map:",
                                which);
                    putstr(win, 0, outbuf);
                    putstr(win, 0, "");
                }
                /* prefix: "coords  C  " where 'C' is mon or obj symbol */
                Sprintf(outbuf, (cmode == GPCOORDS_SCREEN) ? "%s  "
                                  : (cmode == GPCOORDS_MAP) ? "%8s  "
                                      : "%12s  ",
                        coord_desc(x, y, coordbuf, cmode));
                Sprintf(eos(outbuf), "%s  ", encglyph(glyph));
                /* guard against potential overflow */
                lookbuf[sizeof lookbuf - 1 - strlen(outbuf)] = '\0';
                Strcat(outbuf, lookbuf);
                putmixed(win, 0, outbuf);
            }
        }
    }
    if (count)
        display_nhwindow(win, TRUE);
    else
#if 0 /*JP:T*/
        pline("No %s are currently shown %s.",
              do_mons ? "monsters" : "objects",
              nearby ? "nearby" : "on the map");
#else
        pline("今のところ%sに%s．",
              nearby ? "近く" : "地図上",
              do_mons ? "怪物はいない" : "ものはない");
#endif
    destroy_nhwindow(win);
}

static const char *suptext1[] = {
#if 0 /*JP:T*/
    "%s is a member of a marauding horde of orcs",
    "rumored to have brutally attacked and plundered",
    "the ordinarily sheltered town that is located ",
    "deep within The Gnomish Mines.",
    "",
    "The members of that vicious horde proudly and ",
    "defiantly acclaim their allegiance to their",
    "leader %s in their names.",
    (char *) 0,
#else
    "%sは，ノームの鉱山の奥に位置している",
    "通常通り防御していた街を容赦なく攻撃して",
    "略奪したと噂される，オークの襲撃集団の一員である．",
    "",
    "その悪質な集団のメンバーは，そのリーダーである%sの名の下に",
    "誇らしげかつ挑戦的にその忠誠を称賛している．",
    (char *) 0,
#endif
};

static const char *suptext2[] = {
#if 0 /*JP:T*/
    "\"%s\" is the common dungeon name of",
    "a nefarious orc who is known to acquire property",
    "from thieves and sell it off for profit.",
    "",
    "The perpetrator was last seen hanging around the",
    "stairs leading to the Gnomish Mines.",
    (char *) 0,
#else
    "\"%s\" は，盗賊から物品を入手して",
    "利益を得るために売りさばくことで知られている",
    "無法なオークの一般的な迷宮名である．",
    "",
    "犯人が最後に目撃されたのは",
    "ノームの炭鉱へ続く階段の近くである．",
    (char *) 0,
#endif
};

STATIC_OVL void
do_supplemental_info(name, pm, without_asking)
char *name;
struct permonst *pm;
boolean without_asking;
{
    const char **textp;
    winid datawin = WIN_ERR;
    char *entrytext = name, *bp = (char *) 0, *bp2 = (char *) 0;
    char question[QBUFSZ];
    boolean yes_to_moreinfo = FALSE;
    boolean is_marauder = (name && pm && is_orc(pm));

    /*
     * Provide some info on some specific things
     * meant to support in-game mythology, and not
     * available from data.base or other sources.
     */
    if (is_marauder && (strlen(name) < (BUFSZ - 1))) {
        char fullname[BUFSZ];

        bp = strstri(name, " of ");
        bp2 = strstri(name, " the Fence");

        if (bp || bp2) {
            Strcpy(fullname, name);
            if (!without_asking) {
                Strcpy(question, "More info about \"");
                /* +2 => length of "\"?" */
                copynchars(eos(question), entrytext,
                    (int) (sizeof question - 1 - (strlen(question) + 2)));
                Strcat(question, "\"?");
                if (yn(question) == 'y')
                yes_to_moreinfo = TRUE;
            }
            if (yes_to_moreinfo) {
                int i, subs = 0;
                const char *gang = (char *) 0;

                if (bp) {
                    textp = suptext1;
                    gang = bp + 4;
                    *bp = '\0';
                } else {
                    textp = suptext2;
                    gang = "";
                }
                datawin = create_nhwindow(NHW_MENU);
                for (i = 0; textp[i]; i++) {
                    char buf[BUFSZ];
                    const char *txt;

                    if (strstri(textp[i], "%s") != 0) {
                        Sprintf(buf, textp[i], subs++ ? gang : fullname);
                        txt = buf;
                    } else
                        txt = textp[i];
                    putstr(datawin, 0, txt);
                }
                display_nhwindow(datawin, FALSE);
                destroy_nhwindow(datawin), datawin = WIN_ERR;
            }
        }
    }
}

/* the '/' command */
int
dowhatis()
{
    return do_look(0, (coord *) 0);
}

/* the ';' command */
int
doquickwhatis()
{
    return do_look(1, (coord *) 0);
}

/* the '^' command */
int
doidtrap()
{
    register struct trap *trap;
    int x, y, tt, glyph;

    if (!getdir("^"))
        return 0;
    x = u.ux + u.dx;
    y = u.uy + u.dy;

    /* check fake bear trap from confused gold detection */
    glyph = glyph_at(x, y);
    if (glyph_is_trap(glyph) && (tt = glyph_to_trap(glyph)) == BEAR_TRAP) {
        boolean chesttrap = trapped_chest_at(tt, x, y);

        if (chesttrap || trapped_door_at(tt, x, y)) {
/*JP
            pline("That is a trapped %s.", chesttrap ? "chest" : "door");
*/
            pline("それは罠が仕掛けられた%sだ．", chesttrap ? "箱" : "扉");
            return 0; /* trap ID'd, but no time elapses */
        }
    }

    for (trap = ftrap; trap; trap = trap->ntrap)
        if (trap->tx == x && trap->ty == y) {
            if (!trap->tseen)
                break;
            tt = trap->ttyp;
            if (u.dz) {
                if (u.dz < 0 ? is_hole(tt) : tt == ROCKTRAP)
                    break;
            }
            tt = what_trap(tt, rn2_on_display_rng);
#if 0 /*JP:T*/
            pline("That is %s%s%s.",
                  an(defsyms[trap_to_defsym(tt)].explanation),
                  !trap->madeby_u
                     ? ""
                     : (tt == WEB)
                        ? " woven"
                        /* trap doors & spiked pits can't be made by
                           player, and should be considered at least
                           as much "set" as "dug" anyway */
                        : (tt == HOLE || tt == PIT)
                           ? " dug"
                           : " set",
                  !trap->madeby_u ? "" : " by you");
#else
            pline("それは%s%sだ．",
                  !trap->madeby_u
                     ? ""
                     : (tt == WEB)
                        ? "あなたが張った"
                        : (tt == HOLE || tt == PIT)
                           ? "あなたが掘った"
                           : "あなたが仕掛けた",
                  defsyms[trap_to_defsym(tt)].explanation);
#endif
            return 0;
        }
/*JP
    pline("I can't see a trap there.");
*/
    pline("そこには罠はみあたらない．");
    return 0;
}

/*
    Implements a rudimentary if/elif/else/endif interpretor and use
    conditionals in dat/cmdhelp to describe what command each keystroke
    currently invokes, so that there isn't a lot of "(debug mode only)"
    and "(if number_pad is off)" cluttering the feedback that the user
    sees.  (The conditionals add quite a bit of clutter to the raw data
    but users don't see that.  number_pad produces a lot of conditional
    commands:  basic letters vs digits, 'g' vs 'G' for '5', phone
    keypad vs normal layout of digits, and QWERTZ keyboard swap between
    y/Y/^Y/M-y/M-Y/M-^Y and z/Z/^Z/M-z/M-Z/M-^Z.)

    The interpretor understands
     '&#' for comment,
     '&? option' for 'if' (also '&? !option'
                           or '&? option=value[,value2,...]'
                           or '&? !option=value[,value2,...]'),
     '&: option' for 'elif' (with argument variations same as 'if';
                             any number of instances for each 'if'),
     '&:' for 'else' (also '&: #comment';
                      0 or 1 instance for a given 'if'), and
     '&.' for 'endif' (also '&. #comment'; required for each 'if').

    The option handling is a bit of a mess, with no generality for
    which options to deal with and only a comma separated list of
    integer values for the '=value' part.  number_pad is the only
    supported option that has a value; the few others (wizard/debug,
    rest_on_space, #if SHELL, #if SUSPEND) are booleans.
*/

STATIC_DCL void
whatdoes_help()
{
    dlb *fp;
    char *p, buf[BUFSZ];
    winid tmpwin;

    fp = dlb_fopen(KEYHELP, "r");
    if (!fp) {
/*JP
        pline("Cannot open \"%s\" data file!", KEYHELP);
*/
        pline("データファイル\"%s\"を開けない！", KEYHELP);
        display_nhwindow(WIN_MESSAGE, TRUE);
        return;
    }
    tmpwin = create_nhwindow(NHW_TEXT);
    while (dlb_fgets(buf, (int) sizeof buf, fp)) {
        if (*buf == '#')
            continue;
        for (p = buf; *p; p++)
            if (*p != ' ' && *p != '\t')
                break;
        putstr(tmpwin, 0, p);
    }
    (void) dlb_fclose(fp);
    display_nhwindow(tmpwin, TRUE);
    destroy_nhwindow(tmpwin);
}

#if 0
#define WD_STACKLIMIT 5
struct wd_stack_frame {
    Bitfield(active, 1);
    Bitfield(been_true, 1);
    Bitfield(else_seen, 1);
};

STATIC_DCL boolean FDECL(whatdoes_cond, (char *, struct wd_stack_frame *,
                                         int *, int));

STATIC_OVL boolean
whatdoes_cond(buf, stack, depth, lnum)
char *buf;
struct wd_stack_frame *stack;
int *depth, lnum;
{
    const char badstackfmt[] = "cmdhlp: too many &%c directives at line %d.";
    boolean newcond, neg, gotopt;
    char *p, *q, act = buf[1];
    int np = 0;

    newcond = (act == '?' || !stack[*depth].been_true);
    buf += 2;
    mungspaces(buf);
    if (act == '#' || *buf == '#' || !*buf || !newcond) {
        gotopt = (*buf && *buf != '#');
        *buf = '\0';
        neg = FALSE; /* lint suppression */
        p = q = (char *) 0;
    } else {
        gotopt = TRUE;
        if ((neg = (*buf == '!')) != 0)
            if (*++buf == ' ')
                ++buf;
        p = index(buf, '='), q = index(buf, ':');
        if (!p || (q && q < p))
            p = q;
        if (p) { /* we have a value specified */
            /* handle a space before or after (or both) '=' (or ':') */
            if (p > buf && p[-1] == ' ')
                p[-1] = '\0'; /* end of keyword in buf[] */
            *p++ = '\0'; /* terminate keyword, advance to start of value */
            if (*p == ' ')
                p++;
        }
    }
    if (*buf && (act == '?' || act == ':')) {
        if (!strcmpi(buf, "number_pad")) {
            if (!p) {
                newcond = iflags.num_pad;
            } else {
                /* convert internal encoding (separate yes/no and 0..3)
                   back to user-visible one (-1..4) */
                np = iflags.num_pad ? (1 + iflags.num_pad_mode) /* 1..4 */
                                    : (-1 * iflags.num_pad_mode); /* -1..0 */
                newcond = FALSE;
                for (; p; p = q) {
                    q = index(p, ',');
                    if (q)
                        *q++ = '\0';
                    if (atoi(p) == np) {
                        newcond = TRUE;
                        break;
                    }
                }
            }
        } else if (!strcmpi(buf, "rest_on_space")) {
            newcond = flags.rest_on_space;
        } else if (!strcmpi(buf, "debug") || !strcmpi(buf, "wizard")) {
            newcond = flags.debug; /* == wizard */
        } else if (!strcmpi(buf, "shell")) {
#ifdef SHELL
            /* should we also check sysopt.shellers? */
            newcond = TRUE;
#else
            newcond = FALSE;
#endif
        } else if (!strcmpi(buf, "suspend")) {
#ifdef SUSPEND
            /* sysopt.shellers is also used for dosuspend()... */
            newcond = TRUE;
#else
            newcond = FALSE;
#endif
        } else {
            impossible(
                "cmdhelp: unrecognized &%c conditional at line %d: \"%.20s\"",
                       act, lnum, buf);
            neg = FALSE;
        }
        /* this works for number_pad too: &? !number_pad:-1,0
           would be true for 1..4 after negation */
        if (neg)
            newcond = !newcond;
    }
    switch (act) {
    default:
    case '#': /* comment */
        break;
    case '.': /* endif */
        if (--*depth < 0) {
            impossible(badstackfmt, '.', lnum);
            *depth = 0;
        }
        break;
    case ':': /* else or elif */
        if (*depth == 0 || stack[*depth].else_seen) {
            impossible(badstackfmt, ':', lnum);
            *depth = 1; /* so that stack[*depth - 1] is a valid access */
        }
        if (stack[*depth].active || stack[*depth].been_true
            || !stack[*depth - 1].active)
            stack[*depth].active = 0;
        else if (newcond)
            stack[*depth].active = stack[*depth].been_true = 1;
        if (!gotopt)
            stack[*depth].else_seen = 1;
        break;
    case '?': /* if */
        if (++*depth >= WD_STACKLIMIT) {
            impossible(badstackfmt, '?', lnum);
            *depth = WD_STACKLIMIT - 1;
        }
        stack[*depth].active = (newcond && stack[*depth - 1].active) ? 1 : 0;
        stack[*depth].been_true = stack[*depth].active;
        stack[*depth].else_seen = 0;
        break;
    }
    return stack[*depth].active ? TRUE : FALSE;
}
#endif /* 0 */

char *
dowhatdoes_core(q, cbuf)
char q;
char *cbuf;
{
    char buf[BUFSZ];
#if 0
    dlb *fp;
    struct wd_stack_frame stack[WD_STACKLIMIT];
    boolean cond;
    int ctrl, meta, depth = 0, lnum = 0;
#endif /* 0 */
    const char *ec_desc;

    if ((ec_desc = key2extcmddesc(q)) != NULL) {
        char keybuf[QBUFSZ];

        Sprintf(buf, "%-8s%s.", key2txt(q, keybuf), ec_desc);
        Strcpy(cbuf, buf);
        return cbuf;
    }
    return 0;
#if 0
    fp = dlb_fopen(CMDHELPFILE, "r");
    if (!fp) {
        pline("Cannot open \"%s\" data file!", CMDHELPFILE);
        return 0;
    }

    meta = (0x80 & (uchar) q) != 0;
    if (meta)
        q &= 0x7f;
    ctrl = (0x1f & (uchar) q) == (uchar) q;
    if (ctrl)
        q |= 0x40; /* NUL -> '@', ^A -> 'A', ... ^Z -> 'Z', ^[ -> '[', ... */
    else if (q == 0x7f)
        ctrl = 1, q = '?';

    (void) memset((genericptr_t) stack, 0, sizeof stack);
    cond = stack[0].active = 1;
    while (dlb_fgets(buf, sizeof buf, fp)) {
        ++lnum;
        if (buf[0] == '&' && buf[1] && index("?:.#", buf[1])) {
            cond = whatdoes_cond(buf, stack, &depth, lnum);
            continue;
        }
        if (!cond)
            continue;
        if (meta ? (buf[0] == 'M' && buf[1] == '-'
                    && (ctrl ? buf[2] == '^' && highc(buf[3]) == q
                             : buf[2] == q))
                 : (ctrl ? buf[0] == '^' && highc(buf[1]) == q
                         : buf[0] == q)) {
            (void) strip_newline(buf);
            if (index(buf, '\t'))
                (void) tabexpand(buf);
            if (meta && ctrl && buf[4] == ' ') {
                (void) strncpy(buf, "M-^?    ", 8);
                buf[3] = q;
            } else if (meta && buf[3] == ' ') {
                (void) strncpy(buf, "M-?     ", 8);
                buf[2] = q;
            } else if (ctrl && buf[2] == ' ') {
                (void) strncpy(buf, "^?      ", 8);
                buf[1] = q;
            } else if (buf[1] == ' ') {
                (void) strncpy(buf, "?       ", 8);
                buf[0] = q;
            }
            (void) dlb_fclose(fp);
            Strcpy(cbuf, buf);
            return cbuf;
        }
    }
    (void) dlb_fclose(fp);
    if (depth != 0)
        impossible("cmdhelp: mismatched &? &: &. conditionals.");
    return (char *) 0;
#endif /* 0 */
}

int
dowhatdoes()
{
    static boolean once = FALSE;
    char bufr[BUFSZ];
    char q, *reslt;

    if (!once) {
#if 0 /*JP*/
        pline("Ask about '&' or '?' to get more info.%s",
#ifdef ALTMETA
              iflags.altmeta ? "  (For ESC, type it twice.)" :
#endif
              "");
#else
        pline("さらなる情報については '&' か '?' についてたずねます．%s",
#ifdef ALTMETA
              iflags.altmeta ? "  (ESCについては，2回タイプします．)" :
#endif
              "");
#endif
        once = TRUE;
    }
#if defined(UNIX) || defined(VMS)
    introff(); /* disables ^C but not ^\ */
#endif
/*JP
    q = yn_function("What command?", (char *) 0, '\0');
*/
    q = yn_function("どういうコマンド？", (char *) 0, '\0');
#ifdef ALTMETA
    if (q == '\033' && iflags.altmeta) {
        /* in an ideal world, we would know whether another keystroke
           was already pending, but this is not an ideal world...
           if user typed ESC, we'll essentially hang until another
           character is typed */
        q = yn_function("]", (char *) 0, '\0');
        if (q != '\033')
            q = (char) ((uchar) q | 0200);
    }
#endif /*ALTMETA*/
#if defined(UNIX) || defined(VMS)
    intron(); /* reenables ^C */
#endif
    reslt = dowhatdoes_core(q, bufr);
    if (reslt) {
        if (q == '&' || q == '?')
            whatdoes_help();
        pline("%s", reslt);
    } else {
#if 0 /*JP:T*/
        pline("No such command '%s', char code %d (0%03o or 0x%02x).",
              visctrl(q), (uchar) q, (uchar) q, (uchar) q);
#else
        pline("そんなコマンド'%s'，文字コード%d(0%03o または 0x%02x)はない．",
              visctrl(q), (uchar) q, (uchar) q, (uchar) q);
#endif
    }
    return 0;
}

STATIC_OVL void
docontact(VOID_ARGS)
{
    winid cwin = create_nhwindow(NHW_TEXT);
    char buf[BUFSZ];

    if (sysopt.support) {
        /*XXX overflow possibilities*/
        Sprintf(buf, "To contact local support, %s", sysopt.support);
        putstr(cwin, 0, buf);
        putstr(cwin, 0, "");
    } else if (sysopt.fmtd_wizard_list) { /* formatted SYSCF WIZARDS */
        Sprintf(buf, "To contact local support, contact %s.",
                sysopt.fmtd_wizard_list);
        putstr(cwin, 0, buf);
        putstr(cwin, 0, "");
    }
    putstr(cwin, 0, "To contact the NetHack development team directly,");
    /*XXX overflow possibilities*/
    Sprintf(buf, "see the 'Contact' form on our website or email <%s>.",
            DEVTEAM_EMAIL);
    putstr(cwin, 0, buf);
    putstr(cwin, 0, "");
    putstr(cwin, 0, "For more information on NetHack, or to report a bug,");
    Sprintf(buf, "visit our website \"%s\".", DEVTEAM_URL);
    putstr(cwin, 0, buf);
    display_nhwindow(cwin, FALSE);
    destroy_nhwindow(cwin);
}

STATIC_OVL void
dispfile_help(VOID_ARGS)
{
    display_file(HELP, TRUE);
}

STATIC_OVL void
dispfile_shelp(VOID_ARGS)
{
    display_file(SHELP, TRUE);
}

STATIC_OVL void
dispfile_optionfile(VOID_ARGS)
{
    display_file(OPTIONFILE, TRUE);
}

STATIC_OVL void
dispfile_license(VOID_ARGS)
{
    display_file(LICENSE, TRUE);
}

STATIC_OVL void
dispfile_debughelp(VOID_ARGS)
{
    display_file(DEBUGHELP, TRUE);
}

STATIC_OVL void
hmenu_doextversion(VOID_ARGS)
{
    (void) doextversion();
}

STATIC_OVL void
hmenu_dohistory(VOID_ARGS)
{
    (void) dohistory();
}

STATIC_OVL void
hmenu_dowhatis(VOID_ARGS)
{
    (void) dowhatis();
}

STATIC_OVL void
hmenu_dowhatdoes(VOID_ARGS)
{
    (void) dowhatdoes();
}

STATIC_OVL void
hmenu_doextlist(VOID_ARGS)
{
    (void) doextlist();
}

void
domenucontrols(VOID_ARGS)
{
    winid cwin = create_nhwindow(NHW_TEXT);
    show_menu_controls(cwin, FALSE);
    display_nhwindow(cwin, FALSE);
    destroy_nhwindow(cwin);
}

/* data for dohelp() */
static struct {
    void NDECL((*f));
    const char *text;
} help_menu_items[] = {
/*JP
    { hmenu_doextversion, "About NetHack (version information)." },
*/
    { hmenu_doextversion, "NetHackについて(バージョン情報)" },
/*JP
    { dispfile_help, "Long description of the game and commands." },
*/
    { dispfile_help, "ゲームおよびコマンドの解説(長文)" },
/*JP
    { dispfile_shelp, "List of game commands." },
*/
    { dispfile_shelp, "コマンド一覧" },
/*JP
    { hmenu_dohistory, "Concise history of NetHack." },
*/
    { hmenu_dohistory, "NetHackの簡単な歴史" },
/*JP
    { hmenu_dowhatis, "Info on a character in the game display." },
*/
    { hmenu_dowhatis, "画面に表示される文字の説明" },
/*JP
    { hmenu_dowhatdoes, "Info on what a given key does." },
*/
    { hmenu_dowhatdoes, "このキーが何を意味するかの説明" },
/*JP
    { option_help, "List of game options." },
*/
    { option_help, "ゲームのオプション一覧" },
/*JP
    { dispfile_optionfile, "Longer explanation of game options." },
*/
    { dispfile_optionfile, "ゲームのオプション一覧(長文)" },
/*JP
    { dokeylist, "Full list of keyboard commands" },
*/
    { dokeylist, "キーボードコマンドの完全な一覧" },
/*JP
    { hmenu_doextlist, "List of extended commands." },
*/
    { hmenu_doextlist, "拡張コマンド一覧" },
/*JP
    { domenucontrols, "List menu control keys" },
*/
    { domenucontrols, "メニュー制御キー一覧s" },
/*JP
    { dispfile_license, "The NetHack license." },
*/
    { dispfile_license, "NetHackのライセンス" },
/*JP
    { docontact, "Support information." },
*/
    { docontact, "サポート情報" },
#ifdef PORT_HELP
/*JP
    { port_help, "%s-specific help and commands." },
*/
    { port_help, "%sに特有のヘルプとコマンド" },
#endif
/*JP
    { dispfile_debughelp, "List of wizard-mode commands." },
*/
    { dispfile_debughelp, "ウィザードモードのコマンド一覧" },
    { (void NDECL((*))) 0, (char *) 0 }
};

/* the '?' command */
int
dohelp()
{
    winid tmpwin = create_nhwindow(NHW_MENU);
    char helpbuf[QBUFSZ];
    int i, n;
    menu_item *selected;
    anything any;
    int sel;

    any = zeroany; /* zero all bits */
    start_menu(tmpwin);

    for (i = 0; help_menu_items[i].text; i++) {
        if (!wizard && help_menu_items[i].f == dispfile_debughelp)
            continue;
        if (help_menu_items[i].text[0] == '%') {
            Sprintf(helpbuf, help_menu_items[i].text, PORT_ID);
        } else {
            Strcpy(helpbuf, help_menu_items[i].text);
        }
        any.a_int = i + 1;
        add_menu(tmpwin, NO_GLYPH, &any, 0, 0, ATR_NONE,
                 helpbuf, MENU_UNSELECTED);
    }
/*JP
    end_menu(tmpwin, "Select one item:");
*/
    end_menu(tmpwin, "選んでください：");
    n = select_menu(tmpwin, PICK_ONE, &selected);
    destroy_nhwindow(tmpwin);
    if (n > 0) {
        sel = selected[0].item.a_int - 1;
        free((genericptr_t) selected);
        (void) (*help_menu_items[sel].f)();
    }
    return 0;
}

/* the 'V' command; also a choice for '?' */
int
dohistory()
{
    display_file(HISTORY, TRUE);
    return 0;
}

/*pager.c*/
