path: root/mbbsd/name.c

/* $Id$ */
#include "bbs.h"

static word_t  *current = NULL;
static char    * const msg_more = "-- More --";

typedef char    (*arrptr)[];
/* name complete for user ID */

static int
UserMaxLen(char cwlist[][IDLEN + 1], int cwnum, int morenum,
       int count)
{
    int             len, max = 0;

    while (count-- > 0 && morenum < cwnum) {
    len = strlen(cwlist[morenum++]);
    if (len > max)
        max = len;
    }
    return max;
}

static int
UserSubArray(char cwbuf[][IDLEN + 1], char cwlist[][IDLEN + 1],
         int cwnum, int key, int pos)
{
    int             key2, num = 0;
    int             n, ch;

    key = chartoupper(key);
    if (key >= 'A' && key <= 'Z')
    key2 = key | 0x20;
    else
    key2 = key;

    for (n = 0; n < cwnum; n++) {
    ch = cwlist[n][pos];
    if (ch == key || ch == key2)
        strlcpy(cwbuf[num++], cwlist[n], sizeof(cwbuf[num]));
    }
    return num;
}

void
FreeNameList(void)
{
    word_t         *p, *temp;

    for (p = toplev; p; p = temp) {
    temp = p->next;
    free(p->word);
    free(p);
    }
}

void
CreateNameList(void)
{
    if (toplev)
    FreeNameList();
    toplev = current = NULL;
}

void
AddNameList(const char *name)
{
    word_t         *node;

    node = (word_t *) malloc(sizeof(word_t));
    node->next = NULL;
    node->word = (char *)malloc(strlen(name) + 1);
    strcpy(node->word, name);

    if (toplev)
    current = current->next = node;
    else
    current = toplev = node;
}

int
RemoveNameList(const char *name)
{
    word_t         *curr, *prev = NULL;

    for (curr = toplev; curr; curr = curr->next) {
    if (!strcmp(curr->word, name)) {
        if (prev == NULL)
        toplev = curr->next;
        else
        prev->next = curr->next;

        if (curr == current)
        current = prev;
        free(curr->word);
        free(curr);
        return 1;
    }
    prev = curr;
    }
    return 0;
}

static inline int
InList(const word_t * list, const char *name)
{
    const word_t         *p;

    for (p = list; p; p = p->next)
    if (!strcmp(p->word, name))
        return 1;
    return 0;
}

int
InNameList(const char *name)
{
    return InList(toplev, name);
}

void
ShowNameList(int row, int column, const char *prompt)
{
    word_t         *p;

    move(row, column);
    clrtobot();
    outs(prompt);

    column = 80;
    for (p = toplev; p; p = p->next) {
    row = strlen(p->word) + 1;
    if (column + row > 76) {
        column = row;
        outc('\n');
    } else {
        column += row;
        outc(' ');
    }
    outs(p->word);
    }
}

void
ToggleNameList(int *reciper, const char *listfile, const char *msg)
{
    FILE           *fp;
    char            genbuf[200];

    if ((fp = fopen(listfile, "r"))) {
    while (fgets(genbuf, STRLEN, fp)) {
        strtok(genbuf, str_space);
        if (!InNameList(genbuf)) {
        AddNameList(genbuf);
        (*reciper)++;
        } else {
        RemoveNameList(genbuf);
        (*reciper)--;
        }
    }
    fclose(fp);
    ShowNameList(3, 0, msg);
    }
}

static int
NumInList(const word_t * list)
{
    register int    i;

    for (i = 0; list; i++)
    list = list->next;
    return i;
}

int
chkstr(char *otag, const char *tag, const char *name)
{
    char            ch;
    const char     *oname = name;

    while (*tag) {
    ch = *name++;
    if (*tag != chartoupper(ch))
        return 0;
    tag++;
    }
    if (*tag && *name == '\0')
    strcpy(otag, oname);
    return 1;
}

static word_t  *
GetSubList(char *tag, word_t * list)
{
    word_t         *wlist, *wcurr;
    char            tagbuf[STRLEN];
    int             n;

    wlist = wcurr = NULL;
    for (n = 0; tag[n]; n++)
    tagbuf[n] = chartoupper(tag[n]);
    tagbuf[n] = '\0';

    while (list) {
    if (chkstr(tag, tagbuf, list->word)) {
        register word_t *node;

        node = (word_t *) malloc(sizeof(word_t));
        node->word = list->word;
        node->next = NULL;
        if (wlist)
        wcurr->next = node;
        else
        wlist = node;
        wcurr = node;
    }
    list = list->next;
    }
    return wlist;
}

static void
ClearSubList(word_t * list)
{
    struct word_t  *tmp_list;

    while (list) {
    tmp_list = list->next;
    free(list);
    list = tmp_list;
    }
}

static int
MaxLen(const word_t * list, int count)
{
    int             len = strlen(list->word);
    int             t;

    while (list && count) {
    if ((t = strlen(list->word)) > len)
        len = t;
    list = list->next;
    count--;
    }
    return len;
}

void
namecomplete(const char *prompt, char *data)
{
    char           *temp;
    word_t         *cwlist, *morelist;
    int             x, y, origx, origy;
    int             ch;
    int             count = 0;
    int             clearbot = NA;

    if (toplev == NULL)
    AddNameList("");
    cwlist = GetSubList("", toplev);
    morelist = NULL;
    temp = data;

    outs(prompt);
    clrtoeol();
    getyx(&y, &x);
    standout();
    prints("%*s", IDLEN + 1, "");
    standend();
    move(y, x);
    origy = y; origx = x;

    while ((ch = igetch()) != EOF) {
    if (ch == '\n' || ch == '\r') {
        *temp = '\0';
        outc('\n');
        if (NumInList(cwlist) == 1)
        strcpy(data, cwlist->word);
        else if (!InList(cwlist, data))
        data[0] = '\0';
        ClearSubList(cwlist);
        break;
    }
    if (ch == ' ') {
        int             col, len;

        if (NumInList(cwlist) == 1) {
        strcpy(data, cwlist->word);
        move(y, x);
        outs(data + count);
        count = strlen(data);
        temp = data + count;
        getyx(&y, &x);
        continue;
        }
        clearbot = YEA;
        col = 0;
        if (!morelist)
        morelist = cwlist;
        len = MaxLen(morelist, p_lines);
        move(2, 0);
        clrtobot();
        printdash("相關資訊一覽表");
        while (len + col < 80) {
        int             i;

        for (i = p_lines; (morelist) && (i > 0); i--) {
            move(3 + (p_lines - i), col);
            outs(morelist->word);
            morelist = morelist->next;
        }
        col += len + 2;
        if (!morelist)
            break;
        len = MaxLen(morelist, p_lines);
        }
        if (morelist) {
        vmsg(msg_more);
        }
        move(y, x);
        continue;
    }
    if (ch == '\177' || ch == '\010') {
        if (temp == data)
        continue;
        temp--;
        count--;
        *temp = '\0';
        ClearSubList(cwlist);
        cwlist = GetSubList(data, toplev);
        morelist = NULL;
        x--;
        move(y, x);
        outc(' ');
        move(y, x);
        continue;
    }
    if (count < STRLEN && isprint(ch)) {
        word_t         *node;

        *temp++ = ch;
        count++;
        *temp = '\0';
        node = GetSubList(data, cwlist);
        if (node == NULL) {
        temp--;
        *temp = '\0';
        count--;
        continue;
        }
        ClearSubList(cwlist);
        cwlist = node;
        morelist = NULL;
        move(y, x);
        outc(ch);
        x++;
    }
    }
    if (ch == EOF)
    /* longjmp(byebye, -1); */
    raise(SIGHUP);      /* jochang: don't know if this is
                 * necessary... */
    outc('\n');
    if (clearbot) {
    move(2, 0);
    clrtobot();
    }
    if (*data) {
    move(origy, origx);
    outs(data);
    outc('\n');
    }
}

void
usercomplete(const char *prompt, char *data)
{
    char           *temp;
    char           *cwbuf, *cwlist;
    int             cwnum, x, y, origx, origy;
    int             clearbot = NA, count = 0, morenum = 0;
    char            ch;

    /* TODO 節省記憶體. (不過這個 function 不常占記憶體...) */
    cwbuf = malloc(MAX_USERS * (IDLEN + 1));
    cwlist = u_namearray((arrptr) cwbuf, &cwnum, "");
    temp = data;

    outs(prompt);
    clrtoeol();
    getyx(&y, &x);
    standout();
    prints("%*s", IDLEN + 1, "");
    standend();
    move(y, x);
    origy = y; origx = x;

    while ((ch = igetch()) != EOF) {
    if (ch == '\n' || ch == '\r') {
        int             i;
        char           *ptr;

        *temp = '\0';
        outc('\n');
        ptr = cwlist;
        for (i = 0; i < cwnum; i++) {
        if (strncasecmp(data, ptr, IDLEN + 1) == 0) {
            strcpy(data, ptr);
            break;
        }
        ptr += IDLEN + 1;
        }
        if (i == cwnum)
        data[0] = '\0';
        break;
    } else if (ch == ' ') {
        int             col, len;

        if (cwnum == 1) {
        strcpy(data, cwlist);
        move(y, x);
        outs(data + count);
        count = strlen(data);
        temp = data + count;
        getyx(&y, &x);
        continue;
        }
        clearbot = YEA;
        col = 0;
        len = UserMaxLen((arrptr) cwlist, cwnum, morenum, p_lines);
        move(2, 0);
        clrtobot();
        printdash("使用者代號一覽表");
        while (len + col < 79) {
        int             i;

        for (i = 0; morenum < cwnum && i < p_lines; i++) {
            move(3 + i, col);
            prints("%s ", cwlist + (IDLEN + 1) * morenum++);
        }
        col += len + 2;
        if (morenum >= cwnum)
            break;
        len = UserMaxLen((arrptr) cwlist, cwnum, morenum, p_lines);
        }
        if (morenum < cwnum) {
        vmsg(msg_more);
        } else
        morenum = 0;
        move(y, x);
        continue;
    } else if (ch == '\177' || ch == '\010') {
        if (temp == data)
        continue;
        temp--;
        count--;
        *temp = '\0';
        cwlist = u_namearray((arrptr) cwbuf, &cwnum, data);
        morenum = 0;
        x--;
        move(y, x);
        outc(' ');
        move(y, x);
        continue;
    } else if (count < STRLEN && isprint((int)ch)) {
        int             n;

        *temp++ = ch;
        *temp = '\0';
        n = UserSubArray((arrptr) cwbuf, (arrptr) cwlist, cwnum, ch, count);
        if (n == 0) {
        temp--;
        *temp = '\0';
        continue;
        }
        cwlist = cwbuf;
        count++;
        cwnum = n;
        morenum = 0;
        move(y, x);
        outc(ch);
        x++;
    }
    }
    free(cwbuf);
    if (ch == EOF)
    /* longjmp(byebye, -1); */
    raise(SIGHUP);      /* jochang: don't know if this is necessary */
    outc('\n');
    if (clearbot) {
    move(2, 0);
    clrtobot();
    }
    if (*data) {
    move(origy, origx);
    outs(data);
    outc('\n');
    }
}

static int
gnc_findbound(char *str, int *START, int *END,
          size_t nmemb, gnc_comp_func compar)
{
    int             start, end, mid, cmp, strl;
    strl = strlen(str);

    start = -1, end = nmemb - 1;
    /* The first available element is always in the half-open interval
     * (start, end]. (or `end'-th it self if start == end) */
    while (end > start + 1) {
    mid = (start + end) / 2;
    cmp = (*compar)(mid, str, strl);
    if (cmp >= 0)
        end = mid;
    else
        start = mid;
    }
    if ((*compar)(end, str, strl) != 0) {
    *START = *END = -1;
    return -1;
    }
    *START = end;

    start = end;
    end = nmemb;
    /* The last available element is always in the half-open interval
     * [start, end). (or `start'-th it self if start == end) */
    while (end > start + 1) {
    mid = (start + end) / 2;
    cmp = (*compar)(mid, str, strl);
    if (cmp <= 0)
        start = mid;
    else
        end = mid;
    }
    *END = start;
    return 0;
}

static int
gnc_complete(char *data, int *start, int *end,
        gnc_perm_func permission, gnc_getname_func getname)
{
    int             i, count, first = -1, last = *end;
    if (*start < 0 || *end < 0)
    return 0;
    for (i = *start, count = 0; i <= *end; ++i)
    if ((*permission)(i)) {
        if (first == -1)
        first = i;
        last = i;
        ++count;
    }
    if (count == 1)
    strcpy(data, (*getname)(first));

    *start = first;
    *end = last;
    return count;
}


int
generalnamecomplete(const char *prompt, char *data, int len, size_t nmemb,
            gnc_comp_func compar, gnc_perm_func permission,
            gnc_getname_func getname)
{
    int             x, y, origx, origy, ch, i, morelist = -1, col, ret = -1;
    int             start, end, ptr;
    int             clearbot = NA;

    outs(prompt);
    clrtoeol();
    getyx(&y, &x);
    standout();
    prints("%*s", IDLEN + 1, "");
    standend();
    move(y, x);
    origy = y; origx = x;

    ptr = 0;
    data[ptr] = 0;

    start = 0; end = nmemb - 1;
    while ((ch = igetch()) != EOF) {
    if (ch == '\n' || ch == '\r') {
        data[ptr] = 0;
        outc('\n');
        if (ptr != 0) {
        gnc_findbound(data, &start, &end, nmemb, compar);
        if (gnc_complete(data, &start, &end, permission, getname)
            == 1 || (*compar)(start, data, len) == 0)
            ret = start;
        else {
            data[0] = '\n';
            ret = -1;
        }
        } else
        ptr = -1;
        break;
    } else if (ch == ' ') {
        if (morelist == -1) {
        if (gnc_findbound(data, &start, &end, nmemb, compar) == -1)
            continue;
        i = gnc_complete(data, &start, &end, permission, getname);
        if (i == 1) {
            move(origy, origx);
            outs(data);
            ptr = strlen(data);
            getyx(&y, &x);
            continue;
        } else {
            char* first = (*getname)(start);
            i = ptr;
            while (first[i] && (*compar)(end, first, i + 1) == 0) {
            data[i] = first[i];
            ++i;
            }
            data[i] = '\0';

            if (i != ptr) { /* did complete several words */
            move(y, x);
            outs(data + ptr);
            getyx(&y, &x);
            ptr = i;
            }
        }
        morelist = start;
        } else if (morelist > end)
        continue;
        clearbot = YEA;
        move(2, 0);
        clrtobot();
        printdash("相關資訊一覽表");

        col = 0;
        while (len + col < 79) {
        for (i = 0; morelist <= end && i < p_lines; ++morelist) {
            if ((*permission)(morelist)) {
            move(3 + i, col);
            prints("%s ", (*getname)(morelist));
            ++i;
            }
        }

        col += len + 2;
        }
        if (morelist != end + 1) {
        vmsg(msg_more);
        }
        move(y, x);
        continue;

    } else if (ch == '\177' || ch == '\010') {  /* backspace */
        if (ptr == 0)
        continue;
        morelist = -1;
        --ptr;
        --x;
        data[ptr] = 0;
        move(y, x);
        outc(' ');
        move(y, x);
        continue;
    } else if (isprint(ch) && ptr <= (len - 2)) {
        morelist = -1;
        data[ptr] = ch;
        ++ptr;
        data[ptr] = 0;
        if (gnc_findbound(data, &start, &end, nmemb, compar) < 0)
        data[--ptr] = 0;
        else {
        for (i = start; i <= end; ++i)
            if ((*permission)(i))
            break;
        if (i == end + 1)
            data[--ptr] = 0;
        else {
            move(y, x);
            outc(ch);
            x++;
        }
        }
    }
    }

    outc('\n');
    if (clearbot) {
    move(2, 0);
    clrtobot();
    }
    if (*data) {
    move(origy, origx);
    outs(data);
    outc('\n');
    }
    return ret;
}

/* general complete functions (brdshm) */
int
completeboard_compar(int where, const char *str, int len)
{
    boardheader_t *bh = &bcache[SHM->bsorted[0][where]];
    return strncasecmp(bh->brdname, str, len);
}

int
completeboard_permission(int where)
{
    boardheader_t *bptr = &bcache[SHM->bsorted[0][where]];
    return (!(bptr->brdattr & BRD_SYMBOLIC) &&
        (GROUPOP() || HasBoardPerm(bptr)) &&
        !(bptr->brdattr & BRD_GROUPBOARD));
}

int 
complete_board_and_group_permission(int where)
{
    boardheader_t *bptr = &bcache[SHM->bsorted[0][where]];
    return (!(bptr->brdattr & BRD_SYMBOLIC) &&
        (GROUPOP() || HasBoardPerm(bptr)));

}

char           *
completeboard_getname(int where)
{
    return bcache[SHM->bsorted[0][where]].brdname;
}

/* general complete functions (utmpshm) */
int
completeutmp_compar(int where, const char *str, int len)
{
    userinfo_t *u = &SHM->uinfo[SHM->sorted[SHM->currsorted][0][where]];
    return strncasecmp(u->userid, str, len);
}

int
completeutmp_permission(int where)
{
   userinfo_t *u = &SHM->uinfo[SHM->sorted[SHM->currsorted][0][where]];
    return (unlikely(HasUserPerm(PERM_SYSOP)) ||
        unlikely(HasUserPerm(PERM_SEECLOAK)) ||
//      !SHM->sorted[SHM->currsorted][0][where]->invisible);
        isvisible(currutmp, u));
}

char           *
completeutmp_getname(int where)
{
    return SHM->uinfo[SHM->sorted[SHM->currsorted][0][where]].userid;
}